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Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -# - -JUJU = juju - -default: - @echo Missing target - @echo 'Usage: make [ lint | unittest | test | clean | sync ]' - env - -# Only trusty supported, but xenial expected soon. -SERIES := $(shell $(JUJU) get-environment default-series) - -HOST_SERIES := $(shell lsb_release -sc) -ifeq ($(HOST_SERIES),trusty) - PYVER := 3.4 -else - PYVER := 3.5 -endif - - -# /!\ Ensure that errors early in pipes cause failures, rather than -# overridden by the last stage of the pipe. cf. 'test.py | ts' -SHELL := /bin/bash -export SHELLOPTS:=errexit:pipefail - - -# Calculate the CHARM_DIR (the directory this Makefile is in) -THIS_MAKEFILE_PATH:=$(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST)) -CHARM_DIR:=$(shell cd $(dir $(THIS_MAKEFILE_PATH));pwd) -VENV3:=$(CHARM_DIR)/.venv3 - -# Set the PATH so the correct tools are found. -export PATH:=$(VENV3)/bin:$(PATH) - -SITE_PACKAGES=$(wildcard $(VENV3)/lib/python*/site-packages) - -PIP=.venv3/bin/pip$(PYVER) -q -NOSETESTS=.venv3/bin/nosetests-3.4 -sv # Yes, even with 3.5 - -# Set pipefail so we can get sane error codes while tagging test output -# with ts(1) -SHELL=bash -o pipefail - -deps: packages venv3 - -lint: deps - date - free --human - charm proof $(CHARM_DIR) - flake8 \ - --ignore=E402,E265 \ - --exclude=charmhelpers,.venv2,.venv3 hooks tests testing - @echo OK: Lint free `date` - -unittest: lint - $(NOSETESTS) \ - tests.test_actions --cover-package=actions \ - tests.test_helpers --cover-package=helpers \ - tests.test_definitions --cover-package=definitions \ - --with-coverage --cover-branches - @echo OK: Unit tests pass `date` - -test: unittest - AMULET_TIMEOUT=3600 \ - $(NOSETESTS) tests.test_integration - -ftest: unittest Test1UnitDeployment -Test1UnitDeployment: deps - date - AMULET_TIMEOUT=5400 \ - $(NOSETESTS) tests.test_integration:Test1UnitDeployment 2>&1 | ts - -20test: unittest Test20Deployment -Test20Deployment: deps - date - AMULET_TIMEOUT=5400 \ - $(NOSETESTS) tests.test_integration:Test20Deployment 2>&1 | ts - -21test: unittest Test21Deployment -Test21Deployment: deps - date - AMULET_TIMEOUT=5400 \ - $(NOSETESTS) tests.test_integration:Test21Deployment 2>&1 | ts - -30test: unittest Test30Deployment -Test30Deployment: deps - date - AMULET_TIMEOUT=5400 \ - $(NOSETESTS) tests.test_integration:Test30Deployment 2>&1 | ts - -3test: unittest Test3UnitDeployment -Test3UnitDeployment: deps - date - AMULET_TIMEOUT=7200 \ - $(NOSETESTS) tests.test_integration:Test3UnitDeployment 2>&1 | ts - -authtest: unittest TestAllowAllAuthenticatorDeployment -TestAllowAllAuthenticatorDeployment: deps - date - AMULET_TIMEOUT=7200 \ - $(NOSETESTS) \ - tests.test_integration:TestAllowAllAuthenticatorDeployment 2>&1 | ts - -# Place a copy of the Oracle Java SE 7 Server Runtime tarball in ./lib -# to run these tests. -jretest: unittest - AMULET_TIMEOUT=5400 \ - $(NOSETESTS) tests.test_integration:TestOracleJREDeployment 2>&1 | ts - -# You need the Oracle JRE (per jretest) and set the DSE_SOURCE environment -# variable for this to work: -# DSE_SOURCE="deb http://un:pw@debian.datastax.com/enterprise stable main" -# You will also need a cache like squid-deb-proxy and have tweaked it to -# cache the authenticated files, or the tests will likely timeout waiting -# for huge downloads to complete. Alternatively, mirror the DataStax -# packages into your own private archive. -dsetest: unittest - AMULET_TIMEOUT=5400 \ - $(NOSETESTS) tests.test_integration:TestDSEDeployment 2>&1 | ts - -coverage: lint - $(NOSETESTS) \ - tests.test_actions --cover-package=actions \ - tests.test_helpers --cover-package=helpers \ - tests.test_definitions --cover-package=definitions \ - --with-coverage --cover-branches \ - --cover-html --cover-html-dir=coverage \ - --cover-min-percentage=100 || \ - (gnome-open coverage/index.html; false) - -clean: - rm -rf .venv? tests/.venv? .stamp-* coverage .coverage - find . -name __pycache__ -type d | xargs rm -rf - - -# Attempt to diagnose environment for test failures. -debug: - -which virtualenv - -which python - -which python2 - -which python3 - -which pip - -which pip3 - -head -1 `which virtualenv || echo nothere` - -python -c 'import sys; print(sys.version); print(sys.path);' - -python2 -c 'import sys; print(sys.version); print(sys.path);' - -python3 -c 'import sys; print(sys.version); print(sys.path);' - -env - - -packages: .stamp-packages -.stamp-packages: - # Install bootstrap debs, and Python packages used by the charm - # to ensure versions match. - sudo add-apt-repository -y ppa:stub/juju - sudo add-apt-repository -y ppa:stub/cassandra - sudo apt-get update - sudo apt-get install -y \ - python3 python3-pip python3-apt python3-dev python-virtualenv \ - charm-tools build-essential libev4 libev-dev libffi-dev \ - netcat python3-jinja2 juju-wait moreutils \ - python3-cassandra python3-bcrypt - touch .stamp-packages - -venv3: packages .stamp-venv3 -.stamp-venv3: - # Build a Python virtualenv to run our tests. - virtualenv -p python3 --system-site-packages ${VENV3} - - # Create a .pth so our tests can locate everything without - # sys.path hacks. - (echo ${CHARM_DIR}/hooks; echo ${CHARM_DIR}) \ - > ${VENV3}/lib/python${PYVER}/site-packages/tests.pth - - echo 'pip: ' `which pip` - - # Pip install packages needed by the test suite but not used - # by the charm. - $(PIP) install bcrypt cassandra-driver blist - $(PIP) install --upgrade -I nose flake8 - $(PIP) install --upgrade coverage amulet mock juju-deployer juju-wait - - echo 'nosetests:' `which nosetests` - echo 'flake8:' `which flake8` - - # Create a link for test shebang lines. - (cd tests && ln -s ${VENV3} .venv3) - - touch .stamp-venv3 - -venv2: packages .stamp-venv2 -.stamp-venv2: - virtualenv -p python2.7 --system-site-packages .venv2 - .venv2/bin/pip install -q bundletester - touch .stamp-venv2 - -bundletest: venv2 - .venv2/bin/bundletester - -sync: - @bzr cat \ - lp:charm-helpers/tools/charm_helpers_sync/charm_helpers_sync.py \ - > .charm_helpers_sync.py - @python .charm_helpers_sync.py -c charm-helpers.yaml - #@python .charm_helpers_sync.py \ - # -c lib/testcharms/testclient/charm-helpers.yaml - @rm .charm_helpers_sync.py diff --git a/charms/trusty/cassandra/README.md b/charms/trusty/cassandra/README.md deleted file mode 100644 index 00784cc..0000000 --- a/charms/trusty/cassandra/README.md +++ /dev/null @@ -1,179 +0,0 @@ -# Overview - -The Apache Cassandra database is the right choice when you need scalability -and high availability without compromising performance. Linear scalability -and proven fault-tolerance on commodity hardware or cloud infrastructure -make it the perfect platform for mission-critical data. Cassandra's support -for replicating across multiple datacenters is best-in-class, providing lower -latency for your users and the peace of mind of knowing that you can survive -regional outages. - -See [cassandra.apache.org](http://cassandra.apache.org) for more information. - - -# Editions - -This charm supports Apache Cassandra 2.0, 2.1, 2.2 & 3.0, and -Datastax Enterprise 4.7 & 4.8. The default is Apache Cassandra 2.2. - -To use Apache Cassandra 2.0, specify the Apache Cassandra 2.0 archive source -in the `install_sources` config setting when deploying. - -To use Datastax Enterprise, set the `edition` config setting to `dse` -and the Datastax Enterprise archive URL in `install_sources` (including your -username and password). - - -# Deployment - -Cassandra deployments are relatively simple in that they consist of a set of -Cassandra nodes which seed from each other to create a ring of servers: - - juju deploy -n3 cs:trusty/cassandra - -The service units will deploy and will form a single ring. - -New nodes can be added to scale up: - - juju add-unit cassandra - - -/!\ Nodes must be manually decommissioned before dropping a unit. - - juju run --unit cassandra/1 "nodetool decommission" - # Wait until Mode is DECOMMISSIONED - juju run --unit cassandra/1 "nodetool netstats" - juju remove-unit cassandra/1 - -It is recommended to deploy at least 3 nodes and configure all your -keyspaces to have a replication factor of three. Using fewer nodes or -neglecting to set your keyspaces' replication settings means that your -data is at risk and availability lower, as a failed unit may take the -only copy of data with it. - -Production systems will normally want to set `max_heap_size` and -`heap_newsize` to the empty string, to enable automatic memory size -tuning. The defaults have been chosen to be suitable for development -environments but will perform poorly with real workloads. - - -## Planning - -- Do not attempt to store too much data per node. If you need more space, - add more nodes. Most workloads work best with a capacity under 1TB - per node. - -- You need to keep 50% of your disk space free for Cassandra maintenance - operations. If you expect your nodes to hold 500GB of data each, you - will need a 1TB partition. Using non-default compaction such as - LeveledCompactionStrategy can lower this waste. - -- Much more information can be found in the [Cassandra 2.2 documentation](http://docs.datastax.com/en/cassandra/2.2/cassandra/planning/planPlanningAbout.html) - - -## Network Access - -The default Cassandra packages are installed from the apache.org -archive. To avoid this download, place a copy of the packages in a local -archive and specify its location in the `install_sources` configuration -option. The signing key is automatically added. - -When using DataStax Enterprise, you need to specify the archive location -containing the DataStax Enterprise .deb packages in the -`install_sources` configuration item, and the signing key in the -`install_keys` configuration item. Place the DataStax packages in a -local archive to avoid downloading from datastax.com. - - -## Oracle Java SE - -Cassandra recommends using Oracle Java SE 8. Unfortunately, this -software is accessible only after accepting Oracle's click-through -license making deployments using it much more cumbersome. You will need -to download the Oracle Java SE 8 Server Runtime for Linux, and place the -tarball at a URL accessible to your deployed units. The config item -`private_jre_url` needs to be set to this URL. - - -# Usage - -To relate the Cassandra charm to a service that understands how to talk to -Cassandra using Thrift or the native Cassandra protocol:: - - juju deploy cs:service-that-needs-cassandra - juju add-relation service-that-needs-cassandra cassandra:database - - -Alternatively, if you require a superuser connection, use the -`database-admin` relation instead of `database`:: - - juju deploy cs:admin-service - juju add-relation admin-service cassandra:database-admin - - -Client charms need to provide nothing. The Cassandra service publishes the -following connection settings and cluster information on the client's relation: - -`username` and `password`: - - Authentication credentials. The cluster is configured to use - the standard PasswordAuthenticator authentication provider, rather - than the insecure default. You can use different credentials - if you wish, using an account created through some other mechanism. - -`host`: - - IP address to connect to. - -`native_transport_port`: - - Port for drivers and tools using the newer native protocol. - -`rpc_port`: - - Port for drivers and tools using the legacy Thrift protocol. - -`cluster_name`: - - The cluster name. A client service may be related to several - Cassandra services, and this setting may be used to tell which - services belong to which cluster. - -`datacenter` and `rack`: - - The datacenter and rack units in this service belong to. Required for - setting keyspace replication correctly. - -The cluster is configured to use the recommended 'snitch' -(GossipingPropertyFileSnitch), so you will need to configure replication of -your keyspaces using the NetworkTopologyStrategy replica placement strategy. -For example, using the default datacenter named 'juju': - - CREATE KEYSPACE IF NOT EXISTS mydata WITH REPLICATION = - { 'class': 'NetworkTopologyStrategy', 'juju': 3}; - - -Although authentication is configured using the standard -PasswordAuthentication, by default no authorization is configured -and the provided credentials will have access to all data on the cluster. -For more granular permissions, you will need to set the authorizer -in the service configuration to CassandraAuthorizer and manually grant -permissions to the users. - - -# Known Limitations and Issues - -This is the 'trusty' charm. Upgrade from the 'precise' charm is not supported. - -The `system_auth` keyspace replication factor is automatically increased -but not decreased. If you have a service with three or more units and -decommission enough nodes to drop below three, you will need to manually -update the `system_auth` keyspace replication settings. - - -# Contact Information - -## Cassandra - -- [Apache Cassandra homepage](http://cassandra.apache.org/) -- [Cassandra Getting Started](http://wiki.apache.org/cassandra/GettingStarted) diff --git a/charms/trusty/cassandra/README.storage b/charms/trusty/cassandra/README.storage deleted file mode 100644 index 4a71179..0000000 --- a/charms/trusty/cassandra/README.storage +++ /dev/null @@ -1,41 +0,0 @@ -= Persistent storage = - -/!\ Unfortunately, per Bug #1334956, the storage and block-storage-broker - charms are not yet available in the charm store for trusty so - this documentation does not work as written. - -The cassandra charm takes advantage of the storage subordinate charm -and the block-storage-broker charm. With these two charms cassandra can -either request new volumes are created or use existing volumes. - -For requesting new volume creation, just set external_volume_mount in -the cassandra charm and root, provider and volume_size for the storage -subordinate charm. - -If using existing volumes, also set the volume_map for the storage -subordinate charm. - - -Example using existing volumes: - -juju deploy -n 3 cassandra -juju set cassandra external_volume_mount="/srv/data" - -juju deploy storage -juju set storage - root=/srv/data - provider=block-storage-broker - volume_size=10 - # Volume map needed for existing storage - volume_map="{cassandra/0: e09be717-384b-43e3-b06a-3a68b5a2252d, - cassandra/1: ebd35228-6972-4e22-86a8-37483581154a, - cassandra/2: 9f02b67b-72da-4e22-98ee-10a95c1b298d}" - -juju deploy block-storage-broker - -juju add-relation storage cassandra -juju add-relation storage block-storage-broker - - -See the READMEs for the storage subordinate charm and the -block-storage-broker charm for more detail on persistent storage. diff --git a/charms/trusty/cassandra/charm-helpers.yaml b/charms/trusty/cassandra/charm-helpers.yaml deleted file mode 100644 index da3786b..0000000 --- a/charms/trusty/cassandra/charm-helpers.yaml +++ /dev/null @@ -1,27 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -destination: hooks/charmhelpers -#branch: lp:charm-helpers -branch: lp:~stub/charm-helpers/integration -include: - - coordinator - - core - - fetch - - contrib.charmsupport - - contrib.templating.jinja - - contrib.network.ufw - - contrib.benchmark diff --git a/charms/trusty/cassandra/config.yaml b/charms/trusty/cassandra/config.yaml deleted file mode 100644 index 6ec68a5..0000000 --- a/charms/trusty/cassandra/config.yaml +++ /dev/null @@ -1,316 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -options: - # Install and upgrade charm related options - extra_packages: - type: string - default: "" - description: > - Extra packages to install. A space delimited list of packages. - package_status: - default: "install" - type: string - description: > - The status of service-affecting packages will be set to this - value in the dpkg database. Useful valid values are "install" - and "hold". - install_sources: - type: string - description: > - charm-helpers standard listing of package install sources. - If you are using Datastax Enterprise, you will need to - override one defaults with your own username and password. - default: | - - deb http://www.apache.org/dist/cassandra/debian 22x main - - ppa:openjdk-r/ppa # For OpenJDK 8 - - ppa:stub/cassandra # For Python driver - # - deb http://debian.datastax.com/community stable main - # DSE requires you to register and add your username/password here. - # - deb http://un:pw@debian.datastax.com/enterprise stable main - install_keys: - type: string - description: > - charm-helpers standard listing of package install source - signing keys, corresponding to install_sources. - default: | - - null # ppa:stub/cassandra signing key added automatically. - - null # Apache package signing key added automatically. - - null # PPA package signing key added automatically. - # - null # DataStack package signing key added automatically. - http_proxy: - type: string - description: > - Value for the http_proxy and https_proxy environment variables. - This causes pip(1) and other tools to perform downloads via - the proxy server. eg. http://squid.dc1.lan:8080 - default: "" - # TODO: Add JNA - # private_jna_url: - # type: string - # default: "" - # description: > - # URL for the private jna tar file. DSE requires JNA >= 3.4 - private_jre_url: - type: string - default: "" - description: > - URL for the private jre tar file. DSE requires - Oracle Java SE 8 Server JRE (eg. server-jre-8u60-linux-x64.tar.gz). - edition: - type: string - default: community - description: > - One of 'community' or 'dse'. 'community' uses the - Apache Cassandra packages. 'dse' is for DataStax - Enterprise. Selecting 'dse' overrides the jvm setting. - jre: - type: string - default: openjdk - description: > - Which Java runtime environment to use. May be 'openjdk' or - 'oracle'. - - # Storage configuration - wait_for_storage_broker: - type: boolean - default: False - description: > - Do not start the service before external storage has been - mounted using the block storage broker relation. If you do - not set this and you relate the service to the storage - broker, then your service will have started up using local - disk, and later torn down and rebuilt when the external - storage became available. - data_file_directories: - type: string - default: data - description: > - Space delimited data directories. Use multiple data - directories to split data over multiple physical hardware - drive partitions. Paths are relative to /var/lib/cassandra - or the block storage broker external mount point. - commitlog_directory: - type: string - default: commitlog - description: > - Commit log directory. The path is relative to - /var/lib/cassandra or the block storage broker external - mount point. - saved_caches_directory: - type: string - default: saved_caches - description: > - Saved caches directory. The path is relative to - /var/lib/cassandra or the block storage broker external - mount point. - io_scheduler: - type: string - default: "noop" - description: > - Set kernel io scheduler for persistent storage. - https://www.kernel.org/doc/Documentation/block/switching-sched.txt - -## units-to-update: -## type: string -## default: "all" -## description: > -## Comma separated list of unit numbers to update (i.e. modify -## /etc setup and trigger cassandra restart on config-change or -## upgrade-charm), or "all". - - # nrpe-external-master relation related options - nagios_context: - default: "juju" - type: string - description: | - Used by the nrpe subordinate charms. - A string that will be prepended to instance name to set the host name - in nagios. So for instance the hostname would be something like: - juju-myservice-0 - If you're running multiple environments with the same services in them - this allows you to differentiate between them. - nagios_servicegroups: - default: "" - type: string - description: > - A comma-separated list of nagios servicegroups. - If left empty, the nagios_context will be used as the servicegroup - nagios_heapchk_warn_pct: - default: 80 - type: int - description: > - The pct of heap used to trigger a nagios warning - nagios_heapchk_crit_pct: - default: 90 - type: int - description: > - The pct of heap used to trigger a nagios critcal alert - nagios_disk_warn_pct: - default: 50 - type: int - description: > - The pct of data disk used to trigger a nagios warning - nagios_disk_crit_pct: - default: 25 - type: int - description: > - The pct of data disk used to trigger a nagios critcal alert - - # cassandra-env.sh related options - # The default tuning has been chosen to be suitable for development - # and test environments. The default tunings are expected to change - # over time. - max_heap_size: - type: string - default: '384M' - description: > - Total size of Java memory heap, for example 1G or 512M. - If you set this, you should also set heap_newsize. The - default is automatically tuned. - heap_newsize: - type: string - default: '32M' - description: > - The size of the JVM's young generation in the heap. If you - set this, you should also set max_heap_size. If in doubt, - go with 100M per physical CPU core. The default is - automatically tuned. - - # Cassandra.yaml related options - cluster_name: - type: string - default: "juju" - description: > - Name of the Cassandra cluster. This is mainly used to - prevent machines in one logical cluster from joining - another. All Cassandra services you wish to cluster together - must have the same cluster_name. This setting cannot be changed - after service deployment. - partitioner: - default: Murmur3Partitioner - type: string - description: > - The cassandra partitioner to use. Use Murmur3Partitioner, - unless another is required for backwards compatibility. - num_tokens: - type: int - default: 256 - description: Number of tokens per node. - - # Topology of the service in the cluster. - datacenter: - type: string - default: "juju" - description: > - The node's datacenter used by the endpoint_snitch. e.g. "DC1". - It cannot be changed after service deployment. - rack: - type: string - default: "" - description: > - The rack used by the endpoint_snitch for all units in this - service. e.g. "Rack1". This cannot be changed after deployment. - It defaults to the service name. Cassandra will store replicated - data in different racks whenever possible. - - - # Networking options. - native_transport_port: - type: int - default: 9042 - description: Native protocol port for native protocol clients. - rpc_port: - type: int - default: 9160 - description: Thrift protocol port for legacy clients. - storage_port: - type: int - default: 7000 - description: Cluster communication port - ssl_storage_port: - type: int - default: 7001 - description: > - Cluster secure communication port. TODO: Unused. configure SSL. - authenticator: - type: string - default: PasswordAuthenticator - description: > - Authentication backend. Only PasswordAuthenticator and - AllowAllAuthenticator are supported. You should only - use AllowAllAuthenticator for legacy applications that - cannot provide authentication credentials. - authorizer: - type: string - default: AllowAllAuthorizer - description: > - Authorization backend, implementing IAuthorizer; used to limit - access/provide permissions Out of the box, Cassandra provides - AllowAllAuthorizer & CassandraAuthorizer - - AllowAllAuthorizer allows any action to any user - set it to - disable authorization. - - CassandraAuthorizer stores permissions in - system_auth.permissions table. - - - # Tuning options. - compaction_throughput_mb_per_sec: - type: int - default: 16 - description: > - Throttles compaction to the given total throughput (in MB/sec) - across the entire system. The faster you insert data, the faster - you need to compact in order to keep the sstable count down, - but in general, setting this to 16 to 32 times the rate you - are inserting data is more than sufficient. Setting this to - 0 disables throttling. Note that this account for all types - of compaction, including validation compaction. - stream_throughput_outbound_megabits_per_sec: - type: int - default: 200 - description: > - Throttles all outbound streaming file transfers on nodes to the - given total throughput in Mbps. This is necessary because Cassandra - does mostly sequential IO when streaming data during bootstrap or - repair, which can lead to saturating the network connection and - degrading rpc performance. When unset, the default is 200 Mbps - or 25 MB/s. 0 to disable throttling. - - tombstone_warn_threshold: - type: int - default: 1000 - description: > - When executing a scan, within or across a partition, we - need to keep the tombstones seen in memory so we can return - them to the coordinator, which will use them to make sure - other replicas also know about the deleted rows. With - workloads that generate a lot of tombstones, this can cause - performance problems and even exaust the server heap. Adjust - the thresholds here if you understand the dangers and want - to scan more tombstones anyway. - tombstone_failure_threshold: - type: int - default: 100000 - description: > - When executing a scan, within or across a partition, we need - to keep the tombstones seen in memory so we can return them - to the coordinator, which will use them to make sure other - replicas also know about the deleted rows. With workloads - that generate a lot of tombstones, this can cause - performance problems and even exaust the server heap. Adjust - the thresholds here if you understand the dangers and want - to scan more tombstones anyway. diff --git a/charms/trusty/cassandra/copyright b/charms/trusty/cassandra/copyright deleted file mode 100644 index 7902f54..0000000 --- a/charms/trusty/cassandra/copyright +++ /dev/null @@ -1,19 +0,0 @@ -Format: http://dep.debian.net/deps/dep5/ - -Files: * -Copyright: Copyright 2013, Canonical Ltd., All Rights Reserved. -License: AGPL-3 -This file is part of the Cassandra charm. -Copyright 2015 Canonical Ltd. -. -This program is free software: you can redistribute it and/or modify it -under the terms of the GNU General Public License version 3, as -published by the Free Software Foundation. -. -This program is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranties of -MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -PURPOSE. See the GNU General Public License for more details. -. -You should have received a copy of the GNU General Public License along -with this program. If not, see <http://www.gnu.org/licenses/>. diff --git a/charms/trusty/cassandra/files/check_cassandra_heap.sh b/charms/trusty/cassandra/files/check_cassandra_heap.sh deleted file mode 100644 index 395aa06..0000000 --- a/charms/trusty/cassandra/files/check_cassandra_heap.sh +++ /dev/null @@ -1,36 +0,0 @@ -#!/bin/bash -#--------------------------------------------------- -# This file is Juju managed -#--------------------------------------------------- - -# Copyright (C) 2012 Canonical Ltd. -# Author: Liam Young -# -# Script used to check Cassandra is alive and that it has space left in the heap - -set -u - -if [[ $# -lt 3 ]]; then - echo "$0 <jmx-ipadress> <warnpct> <criticalpct>" - exit 1 -fi -WARN_PCT=$2 -CRIT_PCT=$3 - -NODE_INF0="$(nodetool -h $1 info 2>/dev/null)" -if [[ $? -ne 0 ]]; then - echo "ERROR: Failed to connect to Cassandra" - exit 2 -fi -PCT_USED=$(echo "$NODE_INF0" | awk 'BEGIN {FS=":"} $1 ~ /^Heap Memory/ {print $2}' | awk '{ printf("%i\n", $1*100/$3) }') -USAGE_INFO="${PCT_USED}% of heap memory used" -if [[ $PCT_USED -lt $WARN_PCT ]]; then - echo "OK: ${USAGE_INFO}" - exit 0 -elif [[ $PCT_USED -lt $CRIT_PCT ]]; then - echo "WARNING: ${USAGE_INFO}" - exit 1 -else - echo "CRITICAL: ${USAGE_INFO}" - exit 1 -fi diff --git a/charms/trusty/cassandra/hooks/actions.py b/charms/trusty/cassandra/hooks/actions.py deleted file mode 100644 index 8887056..0000000 --- a/charms/trusty/cassandra/hooks/actions.py +++ /dev/null @@ -1,990 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -from contextlib import closing -import errno -from functools import wraps -import glob -import os.path -import re -import shlex -import socket -import subprocess -from textwrap import dedent -import time -import urllib.request - -from charmhelpers import fetch -from charmhelpers.contrib.charmsupport import nrpe -from charmhelpers.contrib.network import ufw -from charmhelpers.contrib.templating import jinja -from charmhelpers.core import hookenv, host -from charmhelpers.core.fstab import Fstab -from charmhelpers.core.hookenv import DEBUG, ERROR, WARNING - -import cassandra - -from coordinator import coordinator -import helpers -import relations - - -# These config keys cannot be changed after service deployment. -UNCHANGEABLE_KEYS = set(['cluster_name', 'datacenter', 'rack', 'edition']) - -# If any of these config items are changed, Cassandra needs to be -# restarted and maybe remounted. -RESTART_REQUIRED_KEYS = set([ - 'data_file_directories', - 'commitlog_directory', - 'saved_caches_directory', - 'storage_port', - 'ssl_storage_port', - 'rpc_port', - 'native_transport_port', - 'partitioner', - 'num_tokens', - 'max_heap_size', - 'heap_newsize', - 'authenticator', - 'authorizer', - 'compaction_throughput_mb_per_sec', - 'stream_throughput_outbound_megabits_per_sec', - 'tombstone_warn_threshold', - 'tombstone_failure_threshold', - 'jre', - 'private_jre_url']) - -ALL_CONFIG_KEYS = UNCHANGEABLE_KEYS.union(RESTART_REQUIRED_KEYS) - - -# All other config items. By maintaining both lists, we can detect if -# someone forgot to update these lists when they added a new config item. -RESTART_NOT_REQUIRED_KEYS = set([ - 'extra_packages', - 'package_status', - 'install_sources', - 'install_keys', - 'http_proxy', - 'wait_for_storage_broker', - 'io_scheduler', - 'nagios_context', - 'nagios_servicegroups', - 'nagios_heapchk_warn_pct', - 'nagios_heapchk_crit_pct', - 'nagios_disk_warn_pct', - 'nagios_disk_crit_pct']) - - -def action(func): - '''Log and call func, stripping the undesirable servicename argument. - ''' - @wraps(func) - def wrapper(servicename, *args, **kw): - if hookenv.remote_unit(): - hookenv.log("** Action {}/{} ({})".format(hookenv.hook_name(), - func.__name__, - hookenv.remote_unit())) - else: - hookenv.log("** Action {}/{}".format(hookenv.hook_name(), - func.__name__)) - return func(*args, **kw) - return wrapper - - -def leader_only(func): - '''Decorated function is only run on the leader.''' - @wraps(func) - def wrapper(*args, **kw): - if hookenv.is_leader(): - return func(*args, **kw) - else: - return None - return wrapper - - -def authentication(func): - '''Decorated function is skipped if authentication is disabled.''' - @wraps(func) - def wrapper(*args, **kw): - auth = hookenv.config()['authenticator'] - if auth == 'PasswordAuthenticator': - return func(*args, **kw) - elif auth == 'AllowAllAuthenticator': - hookenv.log('Skipped. Authentication disabled.', DEBUG) - return None - helpers.status_set('blocked', 'Unknown authenticator {}'.format(auth)) - raise SystemExit(0) - return wrapper - - -@action -def set_proxy(): - import hooks - hooks.set_proxy() - - -@action -def revert_unchangeable_config(): - config = hookenv.config() - - # config.previous() only becomes meaningful after the install - # hook has run. During the first run on the unit hook, it - # reports everything has having None as the previous value. - if config._prev_dict is None: - return - - for key in UNCHANGEABLE_KEYS: - if config.changed(key): - previous = config.previous(key) - hookenv.log('{} cannot be changed after service deployment. ' - 'Using original setting {!r}'.format(key, previous), - ERROR) - config[key] = previous - - -# FOR CHARMHELPERS -@action -def preinstall(): - '''Preinstallation data_ready hook.''' - # Only run the preinstall hooks from the actual install hook. - if hookenv.hook_name() == 'install': - # Pre-exec - pattern = os.path.join(hookenv.charm_dir(), - 'exec.d', '*', 'charm-pre-install') - for f in sorted(glob.glob(pattern)): - if os.path.isfile(f) and os.access(f, os.X_OK): - hookenv.log('Running preinstall hook {}'.format(f)) - subprocess.check_call(['sh', '-c', f]) - else: - hookenv.log('Ingnoring preinstall hook {}'.format(f), - WARNING) - else: - hookenv.log('No preinstall hooks found') - - -# FOR CHARMHELPERS -@action -def swapoff(fstab='/etc/fstab'): - '''Turn off swapping in the container, permanently.''' - # Turn off swap in the current session - if helpers.is_lxc(): - hookenv.log("In an LXC. Not touching swap.") - return - else: - try: - subprocess.check_call(['swapoff', '-a']) - except Exception as e: - hookenv.log("Got an error trying to turn off swapping. {}. " - "We may be in an LXC. Exiting gracefully" - "".format(e), WARNING) - return - - # Disable swap permanently - with closing(Fstab(fstab)) as fstab: - while True: - swap_entry = fstab.get_entry_by_attr('filesystem', 'swap') - if swap_entry is None: - break - fstab.remove_entry(swap_entry) - - -# FOR CHARMHELPERS -@action -def configure_sources(): - '''Standard charmhelpers package source configuration.''' - config = hookenv.config() - if config.changed('install_sources') or config.changed('install_keys'): - fetch.configure_sources(True) - - -@action -def add_implicit_package_signing_keys(): - # Rather than blindly add these keys, we should sniff - # config['install_sources'] for apache.org or datastax.com urls and - # add only the appropriate keys. - for key in ('apache', 'datastax'): - path = os.path.join(hookenv.charm_dir(), 'lib', '{}.key'.format(key)) - subprocess.check_call(['apt-key', 'add', path], - stdin=subprocess.DEVNULL) - - -@action -def reset_sysctl(): - '''Configure sysctl settings for Cassandra''' - if helpers.is_lxc(): - hookenv.log("In an LXC. Leaving sysctl unchanged.") - else: - cassandra_sysctl_file = os.path.join('/', 'etc', 'sysctl.d', - '99-cassandra.conf') - contents = b"vm.max_map_count = 131072\n" - try: - host.write_file(cassandra_sysctl_file, contents) - subprocess.check_call(['sysctl', '-p', cassandra_sysctl_file]) - except OSError as e: - if e.errno == errno.EACCES: - hookenv.log("Got Permission Denied trying to set the " - "sysctl settings at {}. We may be in an LXC. " - "Exiting gracefully".format(cassandra_sysctl_file), - WARNING) - else: - raise - - -@action -def reset_limits(): - '''Set /etc/security/limits.d correctly for Ubuntu, so the - startup scripts don't emit a spurious warning. - - Per Cassandra documentation, Ubuntu needs some extra - twiddling in /etc/security/limits.d. I have no idea why - the packages don't do this, since they are already - setting limits for the cassandra user correctly. The real - bug is that the limits of the user running the startup script - are being checked, rather than the limits of the user that will - actually run the process. - ''' - contents = dedent('''\ - # Maintained by Juju - root - memlock unlimited - root - nofile 100000 - root - nproc 32768 - root - as unlimited - ubuntu - memlock unlimited - ubuntu - nofile 100000 - ubuntu - nproc 32768 - ubuntu - as unlimited - ''') - host.write_file('/etc/security/limits.d/cassandra-charm.conf', - contents.encode('US-ASCII')) - - -@action -def install_cassandra_packages(): - helpers.install_packages(helpers.get_cassandra_packages()) - if helpers.get_jre() != 'oracle': - subprocess.check_call(['update-java-alternatives', - '--jre-headless', - '--set', 'java-1.8.0-openjdk-amd64']) - - -@action -def ensure_cassandra_package_status(): - helpers.ensure_package_status(helpers.get_cassandra_packages()) - - -def _fetch_oracle_jre(): - config = hookenv.config() - url = config.get('private_jre_url', None) - if url and config.get('retrieved_jre', None) != url: - filename = os.path.join(hookenv.charm_dir(), - 'lib', url.split('/')[-1]) - if not filename.endswith('-linux-x64.tar.gz'): - helpers.status_set('blocked', - 'Invalid private_jre_url {}'.format(url)) - raise SystemExit(0) - helpers.status_set(hookenv.status_get()[0], - 'Downloading Oracle JRE') - hookenv.log('Oracle JRE URL is {}'.format(url)) - urllib.request.urlretrieve(url, filename) - config['retrieved_jre'] = url - - pattern = os.path.join(hookenv.charm_dir(), - 'lib', 'server-jre-?u*-linux-x64.tar.gz') - tarballs = glob.glob(pattern) - if not (url or tarballs): - helpers.status_set('blocked', - 'private_jre_url not set and no local tarballs.') - raise SystemExit(0) - - elif not tarballs: - helpers.status_set('blocked', - 'Oracle JRE tarball not found ({})'.format(pattern)) - raise SystemExit(0) - - # Latest tarball by filename/version num. Lets hope they don't hit - # 99 (currently at 76). - tarball = sorted(tarballs)[-1] - return tarball - - -def _install_oracle_jre_tarball(tarball): - # Same directory as webupd8 to avoid surprising people, but it could - # be anything. - if 'jre-7u' in str(tarball): - dest = '/usr/lib/jvm/java-7-oracle' - else: - dest = '/usr/lib/jvm/java-8-oracle' - - if not os.path.isdir(dest): - host.mkdir(dest) - - jre_exists = os.path.exists(os.path.join(dest, 'bin', 'java')) - - config = hookenv.config() - - # Unpack the latest tarball if necessary. - if config.get('oracle_jre_tarball', '') == tarball and jre_exists: - hookenv.log('Already installed {}'.format(tarball)) - else: - hookenv.log('Unpacking {}'.format(tarball)) - subprocess.check_call(['tar', '-xz', '-C', dest, - '--strip-components=1', '-f', tarball]) - config['oracle_jre_tarball'] = tarball - - # Set alternatives, so /usr/bin/java does what we want. - for tool in ['java', 'javac']: - tool_path = os.path.join(dest, 'bin', tool) - subprocess.check_call(['update-alternatives', '--install', - os.path.join('/usr/bin', tool), - tool, tool_path, '1']) - subprocess.check_call(['update-alternatives', - '--set', tool, tool_path]) - - -@action -def install_oracle_jre(): - if helpers.get_jre() != 'oracle': - return - - tarball = _fetch_oracle_jre() - _install_oracle_jre_tarball(tarball) - - -@action -def emit_java_version(): - # Log the version for posterity. Could be useful since Oracle JRE - # security updates are not automated. - version = subprocess.check_output(['java', '-version'], - universal_newlines=True) - for line in version.splitlines(): - hookenv.log('JRE: {}'.format(line)) - - -@action -def emit_meminfo(): - helpers.emit(subprocess.check_output(['free', '--human'], - universal_newlines=True)) - - -@action -def configure_cassandra_yaml(): - helpers.configure_cassandra_yaml() - - -@action -def configure_cassandra_env(): - cassandra_env_path = helpers.get_cassandra_env_file() - assert os.path.exists(cassandra_env_path) - - helpers.maybe_backup(cassandra_env_path) - - overrides = [ - ('max_heap_size', re.compile(r'^#?(MAX_HEAP_SIZE)=(.*)$', re.M)), - ('heap_newsize', re.compile(r'^#?(HEAP_NEWSIZE)=(.*)$', re.M)), - # We don't allow this to be overridden to ensure that tools - # will find JMX using the default port. - # ('jmx_port', re.compile(r'^#?(JMX_PORT)=(.*)$', re.M)), - ] - - with open(cassandra_env_path, 'r') as f: - env = f.read() - - config = hookenv.config() - for key, regexp in overrides: - if config[key]: - val = shlex.quote(str(config[key])) - env = regexp.sub(r'\g<1>={}'.format(val), - env) - else: - env = regexp.sub(r'#\1=\2', env) - host.write_file(cassandra_env_path, env.encode('UTF-8')) - - -@action -def configure_cassandra_rackdc(): - config = hookenv.config() - datacenter = config['datacenter'].strip() - rack = config['rack'].strip() or hookenv.service_name() - rackdc_properties = dedent('''\ - dc={} - rack={} - ''').format(datacenter, rack) - rackdc_path = helpers.get_cassandra_rackdc_file() - host.write_file(rackdc_path, rackdc_properties.encode('UTF-8')) - - -def needs_reset_auth_keyspace_replication(): - '''Guard for reset_auth_keyspace_replication.''' - num_nodes = helpers.num_nodes() - datacenter = hookenv.config()['datacenter'] - with helpers.connect() as session: - strategy_opts = helpers.get_auth_keyspace_replication(session) - rf = int(strategy_opts.get(datacenter, -1)) - hookenv.log('system_auth rf={!r}'.format(strategy_opts)) - # If the node count has changed, we should change the rf. - return rf != num_nodes - - -@leader_only -@action -@authentication -@coordinator.require('repair', needs_reset_auth_keyspace_replication) -def reset_auth_keyspace_replication(): - # Cassandra requires you to manually set the replication factor of - # the system_auth keyspace, to ensure availability and redundancy. - # The recommendation is to set the replication factor so that every - # node has a copy. - num_nodes = helpers.num_nodes() - datacenter = hookenv.config()['datacenter'] - with helpers.connect() as session: - strategy_opts = helpers.get_auth_keyspace_replication(session) - rf = int(strategy_opts.get(datacenter, -1)) - hookenv.log('system_auth rf={!r}'.format(strategy_opts)) - if rf != num_nodes: - strategy_opts['class'] = 'NetworkTopologyStrategy' - strategy_opts[datacenter] = num_nodes - if 'replication_factor' in strategy_opts: - del strategy_opts['replication_factor'] - helpers.set_auth_keyspace_replication(session, strategy_opts) - if rf < num_nodes: - # Increasing rf, need to run repair. - helpers.repair_auth_keyspace() - helpers.set_active() - - -@action -def store_unit_private_ip(): - '''Store the unit's private ip address, so we can tell if it changes.''' - hookenv.config()['unit_private_ip'] = hookenv.unit_private_ip() - - -def needs_restart(): - '''Return True if Cassandra is not running or needs to be restarted.''' - if helpers.is_decommissioned(): - # Decommissioned nodes are never restarted. They remain up - # telling everyone they are decommissioned. - helpers.status_set('blocked', 'Decommissioned node') - return False - - if not helpers.is_cassandra_running(): - if helpers.is_bootstrapped(): - helpers.status_set('waiting', 'Waiting for permission to start') - else: - helpers.status_set('waiting', - 'Waiting for permission to bootstrap') - return True - - config = hookenv.config() - - # If our IP address has changed, we need to restart. - if config.changed('unit_private_ip'): - helpers.status_set('waiting', 'IP address changed. ' - 'Waiting for restart permission.') - return True - - # If the directory paths have changed, we need to migrate data - # during a restart. - storage = relations.StorageRelation() - if storage.needs_remount(): - helpers.status_set(hookenv.status_get()[0], - 'New mounts. Waiting for restart permission') - return True - - # If any of these config items changed, a restart is required. - for key in RESTART_REQUIRED_KEYS: - if config.changed(key): - hookenv.log('{} changed. Restart required.'.format(key)) - for key in RESTART_REQUIRED_KEYS: - if config.changed(key): - helpers.status_set(hookenv.status_get()[0], - 'Config changes. ' - 'Waiting for restart permission.') - return True - - # If we have new seeds, we should restart. - new_seeds = helpers.get_seed_ips() - if config.get('configured_seeds') != sorted(new_seeds): - old_seeds = set(config.previous('configured_seeds') or []) - changed = old_seeds.symmetric_difference(new_seeds) - # We don't care about the local node in the changes. - changed.discard(hookenv.unit_private_ip()) - if changed: - helpers.status_set(hookenv.status_get()[0], - 'Updated seeds {!r}. ' - 'Waiting for restart permission.' - ''.format(new_seeds)) - return True - - hookenv.log('Restart not required') - return False - - -@action -@coordinator.require('restart', needs_restart) -def maybe_restart(): - '''Restart sequence. - - If a restart is needed, shutdown Cassandra, perform all pending operations - that cannot be be done while Cassandra is live, and restart it. - ''' - helpers.status_set('maintenance', 'Stopping Cassandra') - helpers.stop_cassandra() - helpers.remount_cassandra() - helpers.ensure_database_directories() - if helpers.peer_relid() and not helpers.is_bootstrapped(): - helpers.status_set('maintenance', 'Bootstrapping') - else: - helpers.status_set('maintenance', 'Starting Cassandra') - helpers.start_cassandra() - - -@action -def post_bootstrap(): - '''Maintain state on if the node has bootstrapped into the cluster. - - Per documented procedure for adding new units to a cluster, wait 2 - minutes if the unit has just bootstrapped to ensure other units - do not attempt bootstrap too soon. Also, wait until completed joining - to ensure we keep the lock and ensure other nodes don't restart or - bootstrap. - ''' - if not helpers.is_bootstrapped(): - if coordinator.relid is not None: - helpers.status_set('maintenance', 'Post-bootstrap 2 minute delay') - hookenv.log('Post-bootstrap 2 minute delay') - time.sleep(120) # Must wait 2 minutes between bootstrapping nodes. - - join_msg_set = False - while True: - status = helpers.get_node_status() - if status == 'NORMAL': - break - elif status == 'JOINING': - if not join_msg_set: - helpers.status_set('maintenance', 'Still joining cluster') - join_msg_set = True - time.sleep(10) - continue - else: - if status is None: - helpers.status_set('blocked', - 'Unexpectedly shutdown during ' - 'bootstrap') - else: - helpers.status_set('blocked', - 'Failed to bootstrap ({})' - ''.format(status)) - raise SystemExit(0) - - # Unconditionally call this to publish the bootstrapped flag to - # the peer relation, as the first unit was bootstrapped before - # the peer relation existed. - helpers.set_bootstrapped() - - -@action -def stop_cassandra(): - helpers.stop_cassandra() - - -@action -def start_cassandra(): - helpers.start_cassandra() - - -@leader_only -@action -@authentication -def create_unit_superusers(): - # The leader creates and updates accounts for nodes, using the - # encrypted password they provide in relations.PeerRelation. We - # don't end up with unencrypted passwords leaving the unit, and we - # don't need to restart Cassandra in no-auth mode which is slow and - # I worry may cause issues interrupting the bootstrap. - if not coordinator.relid: - return # No peer relation, no requests yet. - - created_units = helpers.get_unit_superusers() - uncreated_units = [u for u in hookenv.related_units(coordinator.relid) - if u not in created_units] - for peer in uncreated_units: - rel = hookenv.relation_get(unit=peer, rid=coordinator.relid) - username = rel.get('username') - pwhash = rel.get('pwhash') - if not username: - continue - hookenv.log('Creating {} account for {}'.format(username, peer)) - with helpers.connect() as session: - helpers.ensure_user(session, username, pwhash, superuser=True) - created_units.add(peer) - helpers.set_unit_superusers(created_units) - - -@action -def reset_all_io_schedulers(): - dirs = helpers.get_all_database_directories() - dirs = (dirs['data_file_directories'] + [dirs['commitlog_directory']] + - [dirs['saved_caches_directory']]) - config = hookenv.config() - for d in dirs: - if os.path.isdir(d): # Directory may not exist yet. - helpers.set_io_scheduler(config['io_scheduler'], d) - - -def _client_credentials(relid): - '''Return the client credentials used by relation relid.''' - relinfo = hookenv.relation_get(unit=hookenv.local_unit(), rid=relid) - username = relinfo.get('username') - password = relinfo.get('password') - if username is None or password is None: - for unit in hookenv.related_units(coordinator.relid): - try: - relinfo = hookenv.relation_get(unit=unit, rid=relid) - username = relinfo.get('username') - password = relinfo.get('password') - if username is not None and password is not None: - return username, password - except subprocess.CalledProcessError: - pass # Assume the remote unit has not joined yet. - return None, None - else: - return username, password - - -def _publish_database_relation(relid, superuser): - # The Casandra service needs to provide a common set of credentials - # to a client unit. The leader creates these, if none of the other - # units are found to have published them already (a previously elected - # leader may have done this). The leader then tickles the other units, - # firing a hook and giving them the opportunity to copy and publish - # these credentials. - username, password = _client_credentials(relid) - if username is None: - if hookenv.is_leader(): - # Credentials not set. The leader must generate them. We use - # the service name so that database permissions remain valid - # even after the relation is dropped and recreated, or the - # juju environment rebuild and the database restored from - # backups. - service_name = helpers.get_service_name(relid) - if not service_name: - # Per Bug #1555261, we might not yet have related units, - # so no way to calculate the remote service name and thus - # the user. - return # Try again later. - username = 'juju_{}'.format(helpers.get_service_name(relid)) - if superuser: - username += '_admin' - password = host.pwgen() - pwhash = helpers.encrypt_password(password) - with helpers.connect() as session: - helpers.ensure_user(session, username, pwhash, superuser) - # Wake the peers, if any. - helpers.leader_ping() - else: - return # No credentials yet. Nothing to do. - - # Publish the information the client needs on the relation where - # they can find it. - # - authentication credentials - # - address and port - # - cluster_name, so clients can differentiate multiple clusters - # - datacenter + rack, so clients know what names they can use - # when altering keyspace replication settings. - config = hookenv.config() - hookenv.relation_set(relid, - username=username, password=password, - host=hookenv.unit_public_ip(), - native_transport_port=config['native_transport_port'], - rpc_port=config['rpc_port'], - cluster_name=config['cluster_name'], - datacenter=config['datacenter'], - rack=config['rack']) - - -@action -def publish_database_relations(): - for relid in hookenv.relation_ids('database'): - _publish_database_relation(relid, superuser=False) - - -@action -def publish_database_admin_relations(): - for relid in hookenv.relation_ids('database-admin'): - _publish_database_relation(relid, superuser=True) - - -@action -def install_maintenance_crontab(): - # Every unit should run repair once per week (at least once per - # GCGraceSeconds, which defaults to 10 days but can be changed per - # keyspace). # Distribute the repair time evenly over the week. - unit_num = int(hookenv.local_unit().split('/')[-1]) - dow, hour, minute = helpers.week_spread(unit_num) - contents = jinja.render('cassandra_maintenance_cron.tmpl', vars()) - cron_path = "/etc/cron.d/cassandra-maintenance" - host.write_file(cron_path, contents.encode('US-ASCII')) - - -@action -def emit_cluster_info(): - helpers.emit_describe_cluster() - helpers.emit_status() - helpers.emit_netstats() - - -@action -def configure_firewall(): - '''Configure firewall rules using ufw. - - This is primarily to block access to the replication and JMX ports, - as juju's default port access controls are not strict enough and - allow access to the entire environment. - ''' - config = hookenv.config() - ufw.enable(soft_fail=True) - - # Enable SSH from anywhere, relying on Juju and external firewalls - # to control access. - ufw.service('ssh', 'open') - ufw.service('nrpe', 'open') # Also NRPE for nagios checks. - ufw.service('rsync', 'open') # Also rsync for data transfer and backups. - - # Clients need client access. These protocols are configured to - # require authentication. - client_keys = ['native_transport_port', 'rpc_port'] - client_ports = [config[key] for key in client_keys] - - # Peers need replication access. This protocols does not - # require authentication, so firewall it from other nodes. - peer_ports = [config['storage_port'], config['ssl_storage_port']] - - # Enable client access from anywhere. Juju and external firewalls - # can still restrict this further of course (ie. 'juju expose'). - for key in client_keys: - if config.changed(key) and config.previous(key) is not None: - # First close old ports. We use this order in the unlikely case - # someone is trying to swap the native and Thrift ports. - ufw.service(config.previous(key), 'close') - for port in client_ports: - # Then open or close the configured ports. - ufw.service(port, 'open') - - desired_rules = set() # ufw.grant_access/remove_access commands. - - # Rules for peers - for relinfo in hookenv.relations_of_type('cluster'): - if relinfo['private-address']: - pa = hookenv._ensure_ip(relinfo['private-address']) - for port in peer_ports: - desired_rules.add((pa, 'any', port)) - # Rules for admin connections. We allow database-admin relations access - # to the cluster communication ports so that tools like sstableloader - # can run. - for relinfo in hookenv.relations_of_type('database-admin'): - if relinfo['private-address']: - pa = hookenv._ensure_ip(relinfo['private-address']) - for port in peer_ports: - desired_rules.add((pa, 'any', port)) - - previous_rules = set(tuple(rule) for rule in config.get('ufw_rules', [])) - - # Close any rules previously opened that are no longer desired. - for rule in sorted(list(previous_rules - desired_rules)): - ufw.revoke_access(*rule) - - # Open all the desired rules. - for rule in sorted(list(desired_rules)): - ufw.grant_access(*rule) - - # Store our rules for next time. Note that this is inherantly racy - - # this value is only persisted if the hook exits cleanly. If the - # hook fails, then someone changes port configuration or IP - # addresses change, then the failed hook retried, we can lose track - # of previously granted rules and they will never be revoked. It is - # impossible to remove this race entirely, so we stick with this - # simple approach. - config['ufw_rules'] = list(desired_rules) # A list because JSON. - - -@action -def nrpe_external_master_relation(): - ''' Configure the nrpe-external-master relation ''' - local_plugins = helpers.local_plugins_dir() - if os.path.exists(local_plugins): - src = os.path.join(hookenv.charm_dir(), - "files", "check_cassandra_heap.sh") - with open(src, 'rb') as f: - host.write_file(os.path.join(local_plugins, - 'check_cassandra_heap.sh'), - f.read(), perms=0o555) - - nrpe_compat = nrpe.NRPE() - conf = hookenv.config() - - cassandra_heap_warn = conf.get('nagios_heapchk_warn_pct') - cassandra_heap_crit = conf.get('nagios_heapchk_crit_pct') - if cassandra_heap_warn and cassandra_heap_crit: - nrpe_compat.add_check( - shortname="cassandra_heap", - description="Check Cassandra Heap", - check_cmd="check_cassandra_heap.sh localhost {} {}" - "".format(cassandra_heap_warn, cassandra_heap_crit)) - - cassandra_disk_warn = conf.get('nagios_disk_warn_pct') - cassandra_disk_crit = conf.get('nagios_disk_crit_pct') - dirs = helpers.get_all_database_directories() - dirs = set(dirs['data_file_directories'] + - [dirs['commitlog_directory'], dirs['saved_caches_directory']]) - # We need to check the space on the mountpoint, not on the actual - # directory, as the nagios user won't have access to the actual directory. - mounts = set(helpers.mountpoint(d) for d in dirs) - for disk in mounts: - check_name = re.sub('[^A-Za-z0-9_]', '_', disk) - if cassandra_disk_warn and cassandra_disk_crit: - shortname = "cassandra_disk{}".format(check_name) - hookenv.log("Adding disk utilization check {}".format(shortname), - DEBUG) - nrpe_compat.add_check( - shortname=shortname, - description="Check Cassandra Disk {}".format(disk), - check_cmd="check_disk -u GB -w {}% -c {}% -K 5% -p {}" - "".format(cassandra_disk_warn, cassandra_disk_crit, - disk)) - nrpe_compat.write() - - -@leader_only -@action -def maintain_seeds(): - '''The leader needs to maintain the list of seed nodes''' - seed_ips = helpers.get_seed_ips() - hookenv.log('Current seeds == {!r}'.format(seed_ips), DEBUG) - - bootstrapped_ips = helpers.get_bootstrapped_ips() - hookenv.log('Bootstrapped == {!r}'.format(bootstrapped_ips), DEBUG) - - # Remove any seeds that are no longer bootstrapped, such as dropped - # units. - seed_ips.intersection_update(bootstrapped_ips) - - # Add more bootstrapped nodes, if necessary, to get to our maximum - # of 3 seeds. - potential_seed_ips = list(reversed(sorted(bootstrapped_ips))) - while len(seed_ips) < 3 and potential_seed_ips: - seed_ips.add(potential_seed_ips.pop()) - - # If there are no seeds or bootstrapped nodes, start with the leader. Us. - if len(seed_ips) == 0: - seed_ips.add(hookenv.unit_private_ip()) - - hookenv.log('Updated seeds == {!r}'.format(seed_ips), DEBUG) - - hookenv.leader_set(seeds=','.join(sorted(seed_ips))) - - -@leader_only -@action -@authentication -def reset_default_password(): - if hookenv.leader_get('default_admin_password_changed'): - hookenv.log('Default admin password already changed') - return - - # Cassandra ships with well known credentials, rather than - # providing a tool to reset credentials. This is a huge security - # hole we must close. - try: - # We need a big timeout here, as the cassandra user actually - # springs into existence some time after Cassandra has started - # up and is accepting connections. - with helpers.connect('cassandra', 'cassandra', - timeout=120, auth_timeout=120) as session: - # But before we close this security hole, we need to use these - # credentials to create a different admin account for the - # leader, allowing it to create accounts for other nodes as they - # join. The alternative is restarting Cassandra without - # authentication, which this charm will likely need to do in the - # future when we allow Cassandra services to be related together. - helpers.status_set('maintenance', - 'Creating initial superuser account') - username, password = helpers.superuser_credentials() - pwhash = helpers.encrypt_password(password) - helpers.ensure_user(session, username, pwhash, superuser=True) - helpers.set_unit_superusers([hookenv.local_unit()]) - - helpers.status_set('maintenance', - 'Changing default admin password') - helpers.query(session, 'ALTER USER cassandra WITH PASSWORD %s', - cassandra.ConsistencyLevel.ALL, (host.pwgen(),)) - except cassandra.AuthenticationFailed: - hookenv.log('Default superuser account already reset') - try: - with helpers.connect(): - hookenv.log("Leader's superuser account already created") - except cassandra.AuthenticationFailed: - # We have no known superuser credentials. Create the account - # the hard, slow way. This will be the normal method - # of creating the service's initial account when we allow - # services to be related together. - helpers.create_unit_superuser_hard() - - hookenv.leader_set(default_admin_password_changed=True) - - -@action -def set_active(): - # If we got this far, the unit is active. Update the status if it is - # not already active. We don't do this unconditionally, as the charm - # may be active but doing stuff, like active but waiting for restart - # permission. - if hookenv.status_get()[0] != 'active': - helpers.set_active() - else: - hookenv.log('Unit status already active', DEBUG) - - -@action -@authentication -def request_unit_superuser(): - relid = helpers.peer_relid() - if relid is None: - hookenv.log('Request deferred until peer relation exists') - return - - relinfo = hookenv.relation_get(unit=hookenv.local_unit(), - rid=relid) - if relinfo and relinfo.get('username'): - # We must avoid blindly setting the pwhash on the relation, - # as we will likely get a different value everytime we - # encrypt the password due to the random salt. - hookenv.log('Superuser account request previously made') - else: - # Publish the requested superuser and hash to our peers. - username, password = helpers.superuser_credentials() - pwhash = helpers.encrypt_password(password) - hookenv.relation_set(relid, username=username, pwhash=pwhash) - hookenv.log('Requested superuser account creation') - - -@action -def update_etc_hosts(): - hostname = socket.gethostname() - addr = hookenv.unit_private_ip() - hosts_map = {addr: hostname} - # only need to add myself to /etc/hosts - helpers.update_hosts_file('/etc/hosts', hosts_map) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/__init__.py b/charms/trusty/cassandra/hooks/charmhelpers/__init__.py deleted file mode 100644 index f72e7f8..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/__init__.py +++ /dev/null @@ -1,38 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -# Bootstrap charm-helpers, installing its dependencies if necessary using -# only standard libraries. -import subprocess -import sys - -try: - import six # flake8: noqa -except ImportError: - if sys.version_info.major == 2: - subprocess.check_call(['apt-get', 'install', '-y', 'python-six']) - else: - subprocess.check_call(['apt-get', 'install', '-y', 'python3-six']) - import six # flake8: noqa - -try: - import yaml # flake8: noqa -except ImportError: - if sys.version_info.major == 2: - subprocess.check_call(['apt-get', 'install', '-y', 'python-yaml']) - else: - subprocess.check_call(['apt-get', 'install', '-y', 'python3-yaml']) - import yaml # flake8: noqa diff --git a/charms/trusty/cassandra/hooks/charmhelpers/contrib/__init__.py b/charms/trusty/cassandra/hooks/charmhelpers/contrib/__init__.py deleted file mode 100644 index d1400a0..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/contrib/__init__.py +++ /dev/null @@ -1,15 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. diff --git a/charms/trusty/cassandra/hooks/charmhelpers/contrib/benchmark/__init__.py b/charms/trusty/cassandra/hooks/charmhelpers/contrib/benchmark/__init__.py deleted file mode 100644 index 1d039ea..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/contrib/benchmark/__init__.py +++ /dev/null @@ -1,126 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -import subprocess -import time -import os -from distutils.spawn import find_executable - -from charmhelpers.core.hookenv import ( - in_relation_hook, - relation_ids, - relation_set, - relation_get, -) - - -def action_set(key, val): - if find_executable('action-set'): - action_cmd = ['action-set'] - - if isinstance(val, dict): - for k, v in iter(val.items()): - action_set('%s.%s' % (key, k), v) - return True - - action_cmd.append('%s=%s' % (key, val)) - subprocess.check_call(action_cmd) - return True - return False - - -class Benchmark(): - """ - Helper class for the `benchmark` interface. - - :param list actions: Define the actions that are also benchmarks - - From inside the benchmark-relation-changed hook, you would - Benchmark(['memory', 'cpu', 'disk', 'smoke', 'custom']) - - Examples: - - siege = Benchmark(['siege']) - siege.start() - [... run siege ...] - # The higher the score, the better the benchmark - siege.set_composite_score(16.70, 'trans/sec', 'desc') - siege.finish() - - - """ - - BENCHMARK_CONF = '/etc/benchmark.conf' # Replaced in testing - - required_keys = [ - 'hostname', - 'port', - 'graphite_port', - 'graphite_endpoint', - 'api_port' - ] - - def __init__(self, benchmarks=None): - if in_relation_hook(): - if benchmarks is not None: - for rid in sorted(relation_ids('benchmark')): - relation_set(relation_id=rid, relation_settings={ - 'benchmarks': ",".join(benchmarks) - }) - - # Check the relation data - config = {} - for key in self.required_keys: - val = relation_get(key) - if val is not None: - config[key] = val - else: - # We don't have all of the required keys - config = {} - break - - if len(config): - with open(self.BENCHMARK_CONF, 'w') as f: - for key, val in iter(config.items()): - f.write("%s=%s\n" % (key, val)) - - @staticmethod - def start(): - action_set('meta.start', time.strftime('%Y-%m-%dT%H:%M:%SZ')) - - """ - If the collectd charm is also installed, tell it to send a snapshot - of the current profile data. - """ - COLLECT_PROFILE_DATA = '/usr/local/bin/collect-profile-data' - if os.path.exists(COLLECT_PROFILE_DATA): - subprocess.check_output([COLLECT_PROFILE_DATA]) - - @staticmethod - def finish(): - action_set('meta.stop', time.strftime('%Y-%m-%dT%H:%M:%SZ')) - - @staticmethod - def set_composite_score(value, units, direction='asc'): - """ - Set the composite score for a benchmark run. This is a single number - representative of the benchmark results. This could be the most - important metric, or an amalgamation of metric scores. - """ - return action_set( - "meta.composite", - {'value': value, 'units': units, 'direction': direction} - ) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/contrib/charmsupport/__init__.py b/charms/trusty/cassandra/hooks/charmhelpers/contrib/charmsupport/__init__.py deleted file mode 100644 index d1400a0..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/contrib/charmsupport/__init__.py +++ /dev/null @@ -1,15 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. diff --git a/charms/trusty/cassandra/hooks/charmhelpers/contrib/charmsupport/nrpe.py b/charms/trusty/cassandra/hooks/charmhelpers/contrib/charmsupport/nrpe.py deleted file mode 100644 index 2f24642..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/contrib/charmsupport/nrpe.py +++ /dev/null @@ -1,398 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -"""Compatibility with the nrpe-external-master charm""" -# Copyright 2012 Canonical Ltd. -# -# Authors: -# Matthew Wedgwood <matthew.wedgwood@canonical.com> - -import subprocess -import pwd -import grp -import os -import glob -import shutil -import re -import shlex -import yaml - -from charmhelpers.core.hookenv import ( - config, - local_unit, - log, - relation_ids, - relation_set, - relations_of_type, -) - -from charmhelpers.core.host import service - -# This module adds compatibility with the nrpe-external-master and plain nrpe -# subordinate charms. To use it in your charm: -# -# 1. Update metadata.yaml -# -# provides: -# (...) -# nrpe-external-master: -# interface: nrpe-external-master -# scope: container -# -# and/or -# -# provides: -# (...) -# local-monitors: -# interface: local-monitors -# scope: container - -# -# 2. Add the following to config.yaml -# -# nagios_context: -# default: "juju" -# type: string -# description: | -# Used by the nrpe subordinate charms. -# A string that will be prepended to instance name to set the host name -# in nagios. So for instance the hostname would be something like: -# juju-myservice-0 -# If you're running multiple environments with the same services in them -# this allows you to differentiate between them. -# nagios_servicegroups: -# default: "" -# type: string -# description: | -# A comma-separated list of nagios servicegroups. -# If left empty, the nagios_context will be used as the servicegroup -# -# 3. Add custom checks (Nagios plugins) to files/nrpe-external-master -# -# 4. Update your hooks.py with something like this: -# -# from charmsupport.nrpe import NRPE -# (...) -# def update_nrpe_config(): -# nrpe_compat = NRPE() -# nrpe_compat.add_check( -# shortname = "myservice", -# description = "Check MyService", -# check_cmd = "check_http -w 2 -c 10 http://localhost" -# ) -# nrpe_compat.add_check( -# "myservice_other", -# "Check for widget failures", -# check_cmd = "/srv/myapp/scripts/widget_check" -# ) -# nrpe_compat.write() -# -# def config_changed(): -# (...) -# update_nrpe_config() -# -# def nrpe_external_master_relation_changed(): -# update_nrpe_config() -# -# def local_monitors_relation_changed(): -# update_nrpe_config() -# -# 5. ln -s hooks.py nrpe-external-master-relation-changed -# ln -s hooks.py local-monitors-relation-changed - - -class CheckException(Exception): - pass - - -class Check(object): - shortname_re = '[A-Za-z0-9-_]+$' - service_template = (""" -#--------------------------------------------------- -# This file is Juju managed -#--------------------------------------------------- -define service {{ - use active-service - host_name {nagios_hostname} - service_description {nagios_hostname}[{shortname}] """ - """{description} - check_command check_nrpe!{command} - servicegroups {nagios_servicegroup} -}} -""") - - def __init__(self, shortname, description, check_cmd): - super(Check, self).__init__() - # XXX: could be better to calculate this from the service name - if not re.match(self.shortname_re, shortname): - raise CheckException("shortname must match {}".format( - Check.shortname_re)) - self.shortname = shortname - self.command = "check_{}".format(shortname) - # Note: a set of invalid characters is defined by the - # Nagios server config - # The default is: illegal_object_name_chars=`~!$%^&*"|'<>?,()= - self.description = description - self.check_cmd = self._locate_cmd(check_cmd) - - def _get_check_filename(self): - return os.path.join(NRPE.nrpe_confdir, '{}.cfg'.format(self.command)) - - def _get_service_filename(self, hostname): - return os.path.join(NRPE.nagios_exportdir, - 'service__{}_{}.cfg'.format(hostname, self.command)) - - def _locate_cmd(self, check_cmd): - search_path = ( - '/usr/lib/nagios/plugins', - '/usr/local/lib/nagios/plugins', - ) - parts = shlex.split(check_cmd) - for path in search_path: - if os.path.exists(os.path.join(path, parts[0])): - command = os.path.join(path, parts[0]) - if len(parts) > 1: - command += " " + " ".join(parts[1:]) - return command - log('Check command not found: {}'.format(parts[0])) - return '' - - def _remove_service_files(self): - if not os.path.exists(NRPE.nagios_exportdir): - return - for f in os.listdir(NRPE.nagios_exportdir): - if f.endswith('_{}.cfg'.format(self.command)): - os.remove(os.path.join(NRPE.nagios_exportdir, f)) - - def remove(self, hostname): - nrpe_check_file = self._get_check_filename() - if os.path.exists(nrpe_check_file): - os.remove(nrpe_check_file) - self._remove_service_files() - - def write(self, nagios_context, hostname, nagios_servicegroups): - nrpe_check_file = self._get_check_filename() - with open(nrpe_check_file, 'w') as nrpe_check_config: - nrpe_check_config.write("# check {}\n".format(self.shortname)) - nrpe_check_config.write("command[{}]={}\n".format( - self.command, self.check_cmd)) - - if not os.path.exists(NRPE.nagios_exportdir): - log('Not writing service config as {} is not accessible'.format( - NRPE.nagios_exportdir)) - else: - self.write_service_config(nagios_context, hostname, - nagios_servicegroups) - - def write_service_config(self, nagios_context, hostname, - nagios_servicegroups): - self._remove_service_files() - - templ_vars = { - 'nagios_hostname': hostname, - 'nagios_servicegroup': nagios_servicegroups, - 'description': self.description, - 'shortname': self.shortname, - 'command': self.command, - } - nrpe_service_text = Check.service_template.format(**templ_vars) - nrpe_service_file = self._get_service_filename(hostname) - with open(nrpe_service_file, 'w') as nrpe_service_config: - nrpe_service_config.write(str(nrpe_service_text)) - - def run(self): - subprocess.call(self.check_cmd) - - -class NRPE(object): - nagios_logdir = '/var/log/nagios' - nagios_exportdir = '/var/lib/nagios/export' - nrpe_confdir = '/etc/nagios/nrpe.d' - - def __init__(self, hostname=None): - super(NRPE, self).__init__() - self.config = config() - self.nagios_context = self.config['nagios_context'] - if 'nagios_servicegroups' in self.config and self.config['nagios_servicegroups']: - self.nagios_servicegroups = self.config['nagios_servicegroups'] - else: - self.nagios_servicegroups = self.nagios_context - self.unit_name = local_unit().replace('/', '-') - if hostname: - self.hostname = hostname - else: - nagios_hostname = get_nagios_hostname() - if nagios_hostname: - self.hostname = nagios_hostname - else: - self.hostname = "{}-{}".format(self.nagios_context, self.unit_name) - self.checks = [] - - def add_check(self, *args, **kwargs): - self.checks.append(Check(*args, **kwargs)) - - def remove_check(self, *args, **kwargs): - if kwargs.get('shortname') is None: - raise ValueError('shortname of check must be specified') - - # Use sensible defaults if they're not specified - these are not - # actually used during removal, but they're required for constructing - # the Check object; check_disk is chosen because it's part of the - # nagios-plugins-basic package. - if kwargs.get('check_cmd') is None: - kwargs['check_cmd'] = 'check_disk' - if kwargs.get('description') is None: - kwargs['description'] = '' - - check = Check(*args, **kwargs) - check.remove(self.hostname) - - def write(self): - try: - nagios_uid = pwd.getpwnam('nagios').pw_uid - nagios_gid = grp.getgrnam('nagios').gr_gid - except: - log("Nagios user not set up, nrpe checks not updated") - return - - if not os.path.exists(NRPE.nagios_logdir): - os.mkdir(NRPE.nagios_logdir) - os.chown(NRPE.nagios_logdir, nagios_uid, nagios_gid) - - nrpe_monitors = {} - monitors = {"monitors": {"remote": {"nrpe": nrpe_monitors}}} - for nrpecheck in self.checks: - nrpecheck.write(self.nagios_context, self.hostname, - self.nagios_servicegroups) - nrpe_monitors[nrpecheck.shortname] = { - "command": nrpecheck.command, - } - - service('restart', 'nagios-nrpe-server') - - monitor_ids = relation_ids("local-monitors") + \ - relation_ids("nrpe-external-master") - for rid in monitor_ids: - relation_set(relation_id=rid, monitors=yaml.dump(monitors)) - - -def get_nagios_hostcontext(relation_name='nrpe-external-master'): - """ - Query relation with nrpe subordinate, return the nagios_host_context - - :param str relation_name: Name of relation nrpe sub joined to - """ - for rel in relations_of_type(relation_name): - if 'nagios_host_context' in rel: - return rel['nagios_host_context'] - - -def get_nagios_hostname(relation_name='nrpe-external-master'): - """ - Query relation with nrpe subordinate, return the nagios_hostname - - :param str relation_name: Name of relation nrpe sub joined to - """ - for rel in relations_of_type(relation_name): - if 'nagios_hostname' in rel: - return rel['nagios_hostname'] - - -def get_nagios_unit_name(relation_name='nrpe-external-master'): - """ - Return the nagios unit name prepended with host_context if needed - - :param str relation_name: Name of relation nrpe sub joined to - """ - host_context = get_nagios_hostcontext(relation_name) - if host_context: - unit = "%s:%s" % (host_context, local_unit()) - else: - unit = local_unit() - return unit - - -def add_init_service_checks(nrpe, services, unit_name): - """ - Add checks for each service in list - - :param NRPE nrpe: NRPE object to add check to - :param list services: List of services to check - :param str unit_name: Unit name to use in check description - """ - for svc in services: - upstart_init = '/etc/init/%s.conf' % svc - sysv_init = '/etc/init.d/%s' % svc - if os.path.exists(upstart_init): - # Don't add a check for these services from neutron-gateway - if svc not in ['ext-port', 'os-charm-phy-nic-mtu']: - nrpe.add_check( - shortname=svc, - description='process check {%s}' % unit_name, - check_cmd='check_upstart_job %s' % svc - ) - elif os.path.exists(sysv_init): - cronpath = '/etc/cron.d/nagios-service-check-%s' % svc - cron_file = ('*/5 * * * * root ' - '/usr/local/lib/nagios/plugins/check_exit_status.pl ' - '-s /etc/init.d/%s status > ' - '/var/lib/nagios/service-check-%s.txt\n' % (svc, - svc) - ) - f = open(cronpath, 'w') - f.write(cron_file) - f.close() - nrpe.add_check( - shortname=svc, - description='process check {%s}' % unit_name, - check_cmd='check_status_file.py -f ' - '/var/lib/nagios/service-check-%s.txt' % svc, - ) - - -def copy_nrpe_checks(): - """ - Copy the nrpe checks into place - - """ - NAGIOS_PLUGINS = '/usr/local/lib/nagios/plugins' - nrpe_files_dir = os.path.join(os.getenv('CHARM_DIR'), 'hooks', - 'charmhelpers', 'contrib', 'openstack', - 'files') - - if not os.path.exists(NAGIOS_PLUGINS): - os.makedirs(NAGIOS_PLUGINS) - for fname in glob.glob(os.path.join(nrpe_files_dir, "check_*")): - if os.path.isfile(fname): - shutil.copy2(fname, - os.path.join(NAGIOS_PLUGINS, os.path.basename(fname))) - - -def add_haproxy_checks(nrpe, unit_name): - """ - Add checks for each service in list - - :param NRPE nrpe: NRPE object to add check to - :param str unit_name: Unit name to use in check description - """ - nrpe.add_check( - shortname='haproxy_servers', - description='Check HAProxy {%s}' % unit_name, - check_cmd='check_haproxy.sh') - nrpe.add_check( - shortname='haproxy_queue', - description='Check HAProxy queue depth {%s}' % unit_name, - check_cmd='check_haproxy_queue_depth.sh') diff --git a/charms/trusty/cassandra/hooks/charmhelpers/contrib/charmsupport/volumes.py b/charms/trusty/cassandra/hooks/charmhelpers/contrib/charmsupport/volumes.py deleted file mode 100644 index 320961b..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/contrib/charmsupport/volumes.py +++ /dev/null @@ -1,175 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -''' -Functions for managing volumes in juju units. One volume is supported per unit. -Subordinates may have their own storage, provided it is on its own partition. - -Configuration stanzas:: - - volume-ephemeral: - type: boolean - default: true - description: > - If false, a volume is mounted as sepecified in "volume-map" - If true, ephemeral storage will be used, meaning that log data - will only exist as long as the machine. YOU HAVE BEEN WARNED. - volume-map: - type: string - default: {} - description: > - YAML map of units to device names, e.g: - "{ rsyslog/0: /dev/vdb, rsyslog/1: /dev/vdb }" - Service units will raise a configure-error if volume-ephemeral - is 'true' and no volume-map value is set. Use 'juju set' to set a - value and 'juju resolved' to complete configuration. - -Usage:: - - from charmsupport.volumes import configure_volume, VolumeConfigurationError - from charmsupport.hookenv import log, ERROR - def post_mount_hook(): - stop_service('myservice') - def post_mount_hook(): - start_service('myservice') - - if __name__ == '__main__': - try: - configure_volume(before_change=pre_mount_hook, - after_change=post_mount_hook) - except VolumeConfigurationError: - log('Storage could not be configured', ERROR) - -''' - -# XXX: Known limitations -# - fstab is neither consulted nor updated - -import os -from charmhelpers.core import hookenv -from charmhelpers.core import host -import yaml - - -MOUNT_BASE = '/srv/juju/volumes' - - -class VolumeConfigurationError(Exception): - '''Volume configuration data is missing or invalid''' - pass - - -def get_config(): - '''Gather and sanity-check volume configuration data''' - volume_config = {} - config = hookenv.config() - - errors = False - - if config.get('volume-ephemeral') in (True, 'True', 'true', 'Yes', 'yes'): - volume_config['ephemeral'] = True - else: - volume_config['ephemeral'] = False - - try: - volume_map = yaml.safe_load(config.get('volume-map', '{}')) - except yaml.YAMLError as e: - hookenv.log("Error parsing YAML volume-map: {}".format(e), - hookenv.ERROR) - errors = True - if volume_map is None: - # probably an empty string - volume_map = {} - elif not isinstance(volume_map, dict): - hookenv.log("Volume-map should be a dictionary, not {}".format( - type(volume_map))) - errors = True - - volume_config['device'] = volume_map.get(os.environ['JUJU_UNIT_NAME']) - if volume_config['device'] and volume_config['ephemeral']: - # asked for ephemeral storage but also defined a volume ID - hookenv.log('A volume is defined for this unit, but ephemeral ' - 'storage was requested', hookenv.ERROR) - errors = True - elif not volume_config['device'] and not volume_config['ephemeral']: - # asked for permanent storage but did not define volume ID - hookenv.log('Ephemeral storage was requested, but there is no volume ' - 'defined for this unit.', hookenv.ERROR) - errors = True - - unit_mount_name = hookenv.local_unit().replace('/', '-') - volume_config['mountpoint'] = os.path.join(MOUNT_BASE, unit_mount_name) - - if errors: - return None - return volume_config - - -def mount_volume(config): - if os.path.exists(config['mountpoint']): - if not os.path.isdir(config['mountpoint']): - hookenv.log('Not a directory: {}'.format(config['mountpoint'])) - raise VolumeConfigurationError() - else: - host.mkdir(config['mountpoint']) - if os.path.ismount(config['mountpoint']): - unmount_volume(config) - if not host.mount(config['device'], config['mountpoint'], persist=True): - raise VolumeConfigurationError() - - -def unmount_volume(config): - if os.path.ismount(config['mountpoint']): - if not host.umount(config['mountpoint'], persist=True): - raise VolumeConfigurationError() - - -def managed_mounts(): - '''List of all mounted managed volumes''' - return filter(lambda mount: mount[0].startswith(MOUNT_BASE), host.mounts()) - - -def configure_volume(before_change=lambda: None, after_change=lambda: None): - '''Set up storage (or don't) according to the charm's volume configuration. - Returns the mount point or "ephemeral". before_change and after_change - are optional functions to be called if the volume configuration changes. - ''' - - config = get_config() - if not config: - hookenv.log('Failed to read volume configuration', hookenv.CRITICAL) - raise VolumeConfigurationError() - - if config['ephemeral']: - if os.path.ismount(config['mountpoint']): - before_change() - unmount_volume(config) - after_change() - return 'ephemeral' - else: - # persistent storage - if os.path.ismount(config['mountpoint']): - mounts = dict(managed_mounts()) - if mounts.get(config['mountpoint']) != config['device']: - before_change() - unmount_volume(config) - mount_volume(config) - after_change() - else: - before_change() - mount_volume(config) - after_change() - return config['mountpoint'] diff --git a/charms/trusty/cassandra/hooks/charmhelpers/contrib/network/__init__.py b/charms/trusty/cassandra/hooks/charmhelpers/contrib/network/__init__.py deleted file mode 100644 index d1400a0..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/contrib/network/__init__.py +++ /dev/null @@ -1,15 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. diff --git a/charms/trusty/cassandra/hooks/charmhelpers/contrib/network/ufw.py b/charms/trusty/cassandra/hooks/charmhelpers/contrib/network/ufw.py deleted file mode 100644 index b65d963..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/contrib/network/ufw.py +++ /dev/null @@ -1,318 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -""" -This module contains helpers to add and remove ufw rules. - -Examples: - -- open SSH port for subnet 10.0.3.0/24: - - >>> from charmhelpers.contrib.network import ufw - >>> ufw.enable() - >>> ufw.grant_access(src='10.0.3.0/24', dst='any', port='22', proto='tcp') - -- open service by name as defined in /etc/services: - - >>> from charmhelpers.contrib.network import ufw - >>> ufw.enable() - >>> ufw.service('ssh', 'open') - -- close service by port number: - - >>> from charmhelpers.contrib.network import ufw - >>> ufw.enable() - >>> ufw.service('4949', 'close') # munin -""" -import re -import os -import subprocess - -from charmhelpers.core import hookenv -from charmhelpers.core.kernel import modprobe, is_module_loaded - -__author__ = "Felipe Reyes <felipe.reyes@canonical.com>" - - -class UFWError(Exception): - pass - - -class UFWIPv6Error(UFWError): - pass - - -def is_enabled(): - """ - Check if `ufw` is enabled - - :returns: True if ufw is enabled - """ - output = subprocess.check_output(['ufw', 'status'], - universal_newlines=True, - env={'LANG': 'en_US', - 'PATH': os.environ['PATH']}) - - m = re.findall(r'^Status: active\n', output, re.M) - - return len(m) >= 1 - - -def is_ipv6_ok(soft_fail=False): - """ - Check if IPv6 support is present and ip6tables functional - - :param soft_fail: If set to True and IPv6 support is broken, then reports - that the host doesn't have IPv6 support, otherwise a - UFWIPv6Error exception is raised. - :returns: True if IPv6 is working, False otherwise - """ - - # do we have IPv6 in the machine? - if os.path.isdir('/proc/sys/net/ipv6'): - # is ip6tables kernel module loaded? - if not is_module_loaded('ip6_tables'): - # ip6tables support isn't complete, let's try to load it - try: - modprobe('ip6_tables') - # great, we can load the module - return True - except subprocess.CalledProcessError as ex: - hookenv.log("Couldn't load ip6_tables module: %s" % ex.output, - level="WARN") - # we are in a world where ip6tables isn't working - if soft_fail: - # so we inform that the machine doesn't have IPv6 - return False - else: - raise UFWIPv6Error("IPv6 firewall support broken") - else: - # the module is present :) - return True - - else: - # the system doesn't have IPv6 - return False - - -def disable_ipv6(): - """ - Disable ufw IPv6 support in /etc/default/ufw - """ - exit_code = subprocess.call(['sed', '-i', 's/IPV6=.*/IPV6=no/g', - '/etc/default/ufw']) - if exit_code == 0: - hookenv.log('IPv6 support in ufw disabled', level='INFO') - else: - hookenv.log("Couldn't disable IPv6 support in ufw", level="ERROR") - raise UFWError("Couldn't disable IPv6 support in ufw") - - -def enable(soft_fail=False): - """ - Enable ufw - - :param soft_fail: If set to True silently disables IPv6 support in ufw, - otherwise a UFWIPv6Error exception is raised when IP6 - support is broken. - :returns: True if ufw is successfully enabled - """ - if is_enabled(): - return True - - if not is_ipv6_ok(soft_fail): - disable_ipv6() - - output = subprocess.check_output(['ufw', 'enable'], - universal_newlines=True, - env={'LANG': 'en_US', - 'PATH': os.environ['PATH']}) - - m = re.findall('^Firewall is active and enabled on system startup\n', - output, re.M) - hookenv.log(output, level='DEBUG') - - if len(m) == 0: - hookenv.log("ufw couldn't be enabled", level='WARN') - return False - else: - hookenv.log("ufw enabled", level='INFO') - return True - - -def disable(): - """ - Disable ufw - - :returns: True if ufw is successfully disabled - """ - if not is_enabled(): - return True - - output = subprocess.check_output(['ufw', 'disable'], - universal_newlines=True, - env={'LANG': 'en_US', - 'PATH': os.environ['PATH']}) - - m = re.findall(r'^Firewall stopped and disabled on system startup\n', - output, re.M) - hookenv.log(output, level='DEBUG') - - if len(m) == 0: - hookenv.log("ufw couldn't be disabled", level='WARN') - return False - else: - hookenv.log("ufw disabled", level='INFO') - return True - - -def default_policy(policy='deny', direction='incoming'): - """ - Changes the default policy for traffic `direction` - - :param policy: allow, deny or reject - :param direction: traffic direction, possible values: incoming, outgoing, - routed - """ - if policy not in ['allow', 'deny', 'reject']: - raise UFWError(('Unknown policy %s, valid values: ' - 'allow, deny, reject') % policy) - - if direction not in ['incoming', 'outgoing', 'routed']: - raise UFWError(('Unknown direction %s, valid values: ' - 'incoming, outgoing, routed') % direction) - - output = subprocess.check_output(['ufw', 'default', policy, direction], - universal_newlines=True, - env={'LANG': 'en_US', - 'PATH': os.environ['PATH']}) - hookenv.log(output, level='DEBUG') - - m = re.findall("^Default %s policy changed to '%s'\n" % (direction, - policy), - output, re.M) - if len(m) == 0: - hookenv.log("ufw couldn't change the default policy to %s for %s" - % (policy, direction), level='WARN') - return False - else: - hookenv.log("ufw default policy for %s changed to %s" - % (direction, policy), level='INFO') - return True - - -def modify_access(src, dst='any', port=None, proto=None, action='allow', - index=None): - """ - Grant access to an address or subnet - - :param src: address (e.g. 192.168.1.234) or subnet - (e.g. 192.168.1.0/24). - :param dst: destiny of the connection, if the machine has multiple IPs and - connections to only one of those have to accepted this is the - field has to be set. - :param port: destiny port - :param proto: protocol (tcp or udp) - :param action: `allow` or `delete` - :param index: if different from None the rule is inserted at the given - `index`. - """ - if not is_enabled(): - hookenv.log('ufw is disabled, skipping modify_access()', level='WARN') - return - - if action == 'delete': - cmd = ['ufw', 'delete', 'allow'] - elif index is not None: - cmd = ['ufw', 'insert', str(index), action] - else: - cmd = ['ufw', action] - - if src is not None: - cmd += ['from', src] - - if dst is not None: - cmd += ['to', dst] - - if port is not None: - cmd += ['port', str(port)] - - if proto is not None: - cmd += ['proto', proto] - - hookenv.log('ufw {}: {}'.format(action, ' '.join(cmd)), level='DEBUG') - p = subprocess.Popen(cmd, stdout=subprocess.PIPE) - (stdout, stderr) = p.communicate() - - hookenv.log(stdout, level='INFO') - - if p.returncode != 0: - hookenv.log(stderr, level='ERROR') - hookenv.log('Error running: {}, exit code: {}'.format(' '.join(cmd), - p.returncode), - level='ERROR') - - -def grant_access(src, dst='any', port=None, proto=None, index=None): - """ - Grant access to an address or subnet - - :param src: address (e.g. 192.168.1.234) or subnet - (e.g. 192.168.1.0/24). - :param dst: destiny of the connection, if the machine has multiple IPs and - connections to only one of those have to accepted this is the - field has to be set. - :param port: destiny port - :param proto: protocol (tcp or udp) - :param index: if different from None the rule is inserted at the given - `index`. - """ - return modify_access(src, dst=dst, port=port, proto=proto, action='allow', - index=index) - - -def revoke_access(src, dst='any', port=None, proto=None): - """ - Revoke access to an address or subnet - - :param src: address (e.g. 192.168.1.234) or subnet - (e.g. 192.168.1.0/24). - :param dst: destiny of the connection, if the machine has multiple IPs and - connections to only one of those have to accepted this is the - field has to be set. - :param port: destiny port - :param proto: protocol (tcp or udp) - """ - return modify_access(src, dst=dst, port=port, proto=proto, action='delete') - - -def service(name, action): - """ - Open/close access to a service - - :param name: could be a service name defined in `/etc/services` or a port - number. - :param action: `open` or `close` - """ - if action == 'open': - subprocess.check_output(['ufw', 'allow', str(name)], - universal_newlines=True) - elif action == 'close': - subprocess.check_output(['ufw', 'delete', 'allow', str(name)], - universal_newlines=True) - else: - raise UFWError(("'{}' not supported, use 'allow' " - "or 'delete'").format(action)) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/contrib/templating/__init__.py b/charms/trusty/cassandra/hooks/charmhelpers/contrib/templating/__init__.py deleted file mode 100644 index d1400a0..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/contrib/templating/__init__.py +++ /dev/null @@ -1,15 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. diff --git a/charms/trusty/cassandra/hooks/charmhelpers/contrib/templating/jinja.py b/charms/trusty/cassandra/hooks/charmhelpers/contrib/templating/jinja.py deleted file mode 100644 index c5efb16..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/contrib/templating/jinja.py +++ /dev/null @@ -1,40 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -""" -Templating using the python-jinja2 package. -""" -import six -from charmhelpers.fetch import apt_install, apt_update -try: - import jinja2 -except ImportError: - apt_update(fatal=True) - if six.PY3: - apt_install(["python3-jinja2"], fatal=True) - else: - apt_install(["python-jinja2"], fatal=True) - import jinja2 - - -DEFAULT_TEMPLATES_DIR = 'templates' - - -def render(template_name, context, template_dir=DEFAULT_TEMPLATES_DIR): - templates = jinja2.Environment( - loader=jinja2.FileSystemLoader(template_dir)) - template = templates.get_template(template_name) - return template.render(context) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/coordinator.py b/charms/trusty/cassandra/hooks/charmhelpers/coordinator.py deleted file mode 100644 index 0303c3f..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/coordinator.py +++ /dev/null @@ -1,607 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. -''' -The coordinator module allows you to use Juju's leadership feature to -coordinate operations between units of a service. - -Behavior is defined in subclasses of coordinator.BaseCoordinator. -One implementation is provided (coordinator.Serial), which allows an -operation to be run on a single unit at a time, on a first come, first -served basis. You can trivially define more complex behavior by -subclassing BaseCoordinator or Serial. - -:author: Stuart Bishop <stuart.bishop@canonical.com> - - -Services Framework Usage -======================== - -Ensure a peers relation is defined in metadata.yaml. Instantiate a -BaseCoordinator subclass before invoking ServiceManager.manage(). -Ensure that ServiceManager.manage() is wired up to the leader-elected, -leader-settings-changed, peers relation-changed and peers -relation-departed hooks in addition to any other hooks you need, or your -service will deadlock. - -Ensure calls to acquire() are guarded, so that locks are only requested -when they are really needed (and thus hooks only triggered when necessary). -Failing to do this and calling acquire() unconditionally will put your unit -into a hook loop. Calls to granted() do not need to be guarded. - -For example:: - - from charmhelpers.core import hookenv, services - from charmhelpers import coordinator - - def maybe_restart(servicename): - serial = coordinator.Serial() - if needs_restart(): - serial.acquire('restart') - if serial.granted('restart'): - hookenv.service_restart(servicename) - - services = [dict(service='servicename', - data_ready=[maybe_restart])] - - if __name__ == '__main__': - _ = coordinator.Serial() # Must instantiate before manager.manage() - manager = services.ServiceManager(services) - manager.manage() - - -You can implement a similar pattern using a decorator. If the lock has -not been granted, an attempt to acquire() it will be made if the guard -function returns True. If the lock has been granted, the decorated function -is run as normal:: - - from charmhelpers.core import hookenv, services - from charmhelpers import coordinator - - serial = coordinator.Serial() # Global, instatiated on module import. - - def needs_restart(): - [ ... Introspect state. Return True if restart is needed ... ] - - @serial.require('restart', needs_restart) - def maybe_restart(servicename): - hookenv.service_restart(servicename) - - services = [dict(service='servicename', - data_ready=[maybe_restart])] - - if __name__ == '__main__': - manager = services.ServiceManager(services) - manager.manage() - - -Traditional Usage -================= - -Ensure a peers relation is defined in metadata.yaml. - -If you are using charmhelpers.core.hookenv.Hooks, ensure that a -BaseCoordinator subclass is instantiated before calling Hooks.execute. - -If you are not using charmhelpers.core.hookenv.Hooks, ensure -that a BaseCoordinator subclass is instantiated and its handle() -method called at the start of all your hooks. - -For example:: - - import sys - from charmhelpers.core import hookenv - from charmhelpers import coordinator - - hooks = hookenv.Hooks() - - def maybe_restart(): - serial = coordinator.Serial() - if serial.granted('restart'): - hookenv.service_restart('myservice') - - @hooks.hook - def config_changed(): - update_config() - serial = coordinator.Serial() - if needs_restart(): - serial.acquire('restart'): - maybe_restart() - - # Cluster hooks must be wired up. - @hooks.hook('cluster-relation-changed', 'cluster-relation-departed') - def cluster_relation_changed(): - maybe_restart() - - # Leader hooks must be wired up. - @hooks.hook('leader-elected', 'leader-settings-changed') - def leader_settings_changed(): - maybe_restart() - - [ ... repeat for *all* other hooks you are using ... ] - - if __name__ == '__main__': - _ = coordinator.Serial() # Must instantiate before execute() - hooks.execute(sys.argv) - - -You can also use the require decorator. If the lock has not been granted, -an attempt to acquire() it will be made if the guard function returns True. -If the lock has been granted, the decorated function is run as normal:: - - from charmhelpers.core import hookenv - - hooks = hookenv.Hooks() - serial = coordinator.Serial() # Must instantiate before execute() - - @require('restart', needs_restart) - def maybe_restart(): - hookenv.service_restart('myservice') - - @hooks.hook('install', 'config-changed', 'upgrade-charm', - # Peers and leader hooks must be wired up. - 'cluster-relation-changed', 'cluster-relation-departed', - 'leader-elected', 'leader-settings-changed') - def default_hook(): - [...] - maybe_restart() - - if __name__ == '__main__': - hooks.execute() - - -Details -======= - -A simple API is provided similar to traditional locking APIs. A lock -may be requested using the acquire() method, and the granted() method -may be used do to check if a lock previously requested by acquire() has -been granted. It doesn't matter how many times acquire() is called in a -hook. - -Locks are released at the end of the hook they are acquired in. This may -be the current hook if the unit is leader and the lock is free. It is -more likely a future hook (probably leader-settings-changed, possibly -the peers relation-changed or departed hook, potentially any hook). - -Whenever a charm needs to perform a coordinated action it will acquire() -the lock and perform the action immediately if acquisition is -successful. It will also need to perform the same action in every other -hook if the lock has been granted. - - -Grubby Details --------------- - -Why do you need to be able to perform the same action in every hook? -If the unit is the leader, then it may be able to grant its own lock -and perform the action immediately in the source hook. If the unit is -the leader and cannot immediately grant the lock, then its only -guaranteed chance of acquiring the lock is in the peers relation-joined, -relation-changed or peers relation-departed hooks when another unit has -released it (the only channel to communicate to the leader is the peers -relation). If the unit is not the leader, then it is unlikely the lock -is granted in the source hook (a previous hook must have also made the -request for this to happen). A non-leader is notified about the lock via -leader settings. These changes may be visible in any hook, even before -the leader-settings-changed hook has been invoked. Or the requesting -unit may be promoted to leader after making a request, in which case the -lock may be granted in leader-elected or in a future peers -relation-changed or relation-departed hook. - -This could be simpler if leader-settings-changed was invoked on the -leader. We could then never grant locks except in -leader-settings-changed hooks giving one place for the operation to be -performed. Unfortunately this is not the case with Juju 1.23 leadership. - -But of course, this doesn't really matter to most people as most people -seem to prefer the Services Framework or similar reset-the-world -approaches, rather than the twisty maze of attempting to deduce what -should be done based on what hook happens to be running (which always -seems to evolve into reset-the-world anyway when the charm grows beyond -the trivial). - -I chose not to implement a callback model, where a callback was passed -to acquire to be executed when the lock is granted, because the callback -may become invalid between making the request and the lock being granted -due to an upgrade-charm being run in the interim. And it would create -restrictions, such no lambdas, callback defined at the top level of a -module, etc. Still, we could implement it on top of what is here, eg. -by adding a defer decorator that stores a pickle of itself to disk and -have BaseCoordinator unpickle and execute them when the locks are granted. -''' -from datetime import datetime -from functools import wraps -import json -import os.path - -from six import with_metaclass - -from charmhelpers.core import hookenv - - -# We make BaseCoordinator and subclasses singletons, so that if we -# need to spill to local storage then only a single instance does so, -# rather than having multiple instances stomp over each other. -class Singleton(type): - _instances = {} - - def __call__(cls, *args, **kwargs): - if cls not in cls._instances: - cls._instances[cls] = super(Singleton, cls).__call__(*args, - **kwargs) - return cls._instances[cls] - - -class BaseCoordinator(with_metaclass(Singleton, object)): - relid = None # Peer relation-id, set by __init__ - relname = None - - grants = None # self.grants[unit][lock] == timestamp - requests = None # self.requests[unit][lock] == timestamp - - def __init__(self, relation_key='coordinator', peer_relation_name=None): - '''Instatiate a Coordinator. - - Data is stored on the peers relation and in leadership storage - under the provided relation_key. - - The peers relation is identified by peer_relation_name, and defaults - to the first one found in metadata.yaml. - ''' - # Most initialization is deferred, since invoking hook tools from - # the constructor makes testing hard. - self.key = relation_key - self.relname = peer_relation_name - hookenv.atstart(self.initialize) - - # Ensure that handle() is called, without placing that burden on - # the charm author. They still need to do this manually if they - # are not using a hook framework. - hookenv.atstart(self.handle) - - def initialize(self): - if self.requests is not None: - return # Already initialized. - - assert hookenv.has_juju_version('1.23'), 'Needs Juju 1.23+' - - if self.relname is None: - self.relname = _implicit_peer_relation_name() - - relids = hookenv.relation_ids(self.relname) - if relids: - self.relid = sorted(relids)[0] - - # Load our state, from leadership, the peer relationship, and maybe - # local state as a fallback. Populates self.requests and self.grants. - self._load_state() - self._emit_state() - - # Save our state if the hook completes successfully. - hookenv.atexit(self._save_state) - - # Schedule release of granted locks for the end of the hook. - # This needs to be the last of our atexit callbacks to ensure - # it will be run first when the hook is complete, because there - # is no point mutating our state after it has been saved. - hookenv.atexit(self._release_granted) - - def acquire(self, lock): - '''Acquire the named lock, non-blocking. - - The lock may be granted immediately, or in a future hook. - - Returns True if the lock has been granted. The lock will be - automatically released at the end of the hook in which it is - granted. - - Do not mindlessly call this method, as it triggers a cascade of - hooks. For example, if you call acquire() every time in your - peers relation-changed hook you will end up with an infinite loop - of hooks. It should almost always be guarded by some condition. - ''' - unit = hookenv.local_unit() - ts = self.requests[unit].get(lock) - if not ts: - # If there is no outstanding request on the peers relation, - # create one. - self.requests.setdefault(lock, {}) - self.requests[unit][lock] = _timestamp() - self.msg('Requested {}'.format(lock)) - - # If the leader has granted the lock, yay. - if self.granted(lock): - self.msg('Acquired {}'.format(lock)) - return True - - # If the unit making the request also happens to be the - # leader, it must handle the request now. Even though the - # request has been stored on the peers relation, the peers - # relation-changed hook will not be triggered. - if hookenv.is_leader(): - return self.grant(lock, unit) - - return False # Can't acquire lock, yet. Maybe next hook. - - def granted(self, lock): - '''Return True if a previously requested lock has been granted''' - unit = hookenv.local_unit() - ts = self.requests[unit].get(lock) - if ts and self.grants.get(unit, {}).get(lock) == ts: - return True - return False - - def requested(self, lock): - '''Return True if we are in the queue for the lock''' - return lock in self.requests[hookenv.local_unit()] - - def request_timestamp(self, lock): - '''Return the timestamp of our outstanding request for lock, or None. - - Returns a datetime.datetime() UTC timestamp, with no tzinfo attribute. - ''' - ts = self.requests[hookenv.local_unit()].get(lock, None) - if ts is not None: - return datetime.strptime(ts, _timestamp_format) - - def handle(self): - if not hookenv.is_leader(): - return # Only the leader can grant requests. - - self.msg('Leader handling coordinator requests') - - # Clear our grants that have been released. - for unit in self.grants.keys(): - for lock, grant_ts in list(self.grants[unit].items()): - req_ts = self.requests.get(unit, {}).get(lock) - if req_ts != grant_ts: - # The request timestamp does not match the granted - # timestamp. Several hooks on 'unit' may have run - # before the leader got a chance to make a decision, - # and 'unit' may have released its lock and attempted - # to reacquire it. This will change the timestamp, - # and we correctly revoke the old grant putting it - # to the end of the queue. - ts = datetime.strptime(self.grants[unit][lock], - _timestamp_format) - del self.grants[unit][lock] - self.released(unit, lock, ts) - - # Grant locks - for unit in self.requests.keys(): - for lock in self.requests[unit]: - self.grant(lock, unit) - - def grant(self, lock, unit): - '''Maybe grant the lock to a unit. - - The decision to grant the lock or not is made for $lock - by a corresponding method grant_$lock, which you may define - in a subclass. If no such method is defined, the default_grant - method is used. See Serial.default_grant() for details. - ''' - if not hookenv.is_leader(): - return False # Not the leader, so we cannot grant. - - # Set of units already granted the lock. - granted = set() - for u in self.grants: - if lock in self.grants[u]: - granted.add(u) - if unit in granted: - return True # Already granted. - - # Ordered list of units waiting for the lock. - reqs = set() - for u in self.requests: - if u in granted: - continue # In the granted set. Not wanted in the req list. - for l, ts in self.requests[u].items(): - if l == lock: - reqs.add((ts, u)) - queue = [t[1] for t in sorted(reqs)] - if unit not in queue: - return False # Unit has not requested the lock. - - # Locate custom logic, or fallback to the default. - grant_func = getattr(self, 'grant_{}'.format(lock), self.default_grant) - - if grant_func(lock, unit, granted, queue): - # Grant the lock. - self.msg('Leader grants {} to {}'.format(lock, unit)) - self.grants.setdefault(unit, {})[lock] = self.requests[unit][lock] - return True - - return False - - def released(self, unit, lock, timestamp): - '''Called on the leader when it has released a lock. - - By default, does nothing but log messages. Override if you - need to perform additional housekeeping when a lock is released, - for example recording timestamps. - ''' - interval = _utcnow() - timestamp - self.msg('Leader released {} from {}, held {}'.format(lock, unit, - interval)) - - def require(self, lock, guard_func, *guard_args, **guard_kw): - """Decorate a function to be run only when a lock is acquired. - - The lock is requested if the guard function returns True. - - The decorated function is called if the lock has been granted. - """ - def decorator(f): - @wraps(f) - def wrapper(*args, **kw): - if self.granted(lock): - self.msg('Granted {}'.format(lock)) - return f(*args, **kw) - if guard_func(*guard_args, **guard_kw) and self.acquire(lock): - return f(*args, **kw) - return None - return wrapper - return decorator - - def msg(self, msg): - '''Emit a message. Override to customize log spam.''' - hookenv.log('coordinator.{} {}'.format(self._name(), msg), - level=hookenv.INFO) - - def _name(self): - return self.__class__.__name__ - - def _load_state(self): - self.msg('Loading state'.format(self._name())) - - # All responses must be stored in the leadership settings. - # The leader cannot use local state, as a different unit may - # be leader next time. Which is fine, as the leadership - # settings are always available. - self.grants = json.loads(hookenv.leader_get(self.key) or '{}') - - local_unit = hookenv.local_unit() - - # All requests must be stored on the peers relation. This is - # the only channel units have to communicate with the leader. - # Even the leader needs to store its requests here, as a - # different unit may be leader by the time the request can be - # granted. - if self.relid is None: - # The peers relation is not available. Maybe we are early in - # the units's lifecycle. Maybe this unit is standalone. - # Fallback to using local state. - self.msg('No peer relation. Loading local state') - self.requests = {local_unit: self._load_local_state()} - else: - self.requests = self._load_peer_state() - if local_unit not in self.requests: - # The peers relation has just been joined. Update any state - # loaded from our peers with our local state. - self.msg('New peer relation. Merging local state') - self.requests[local_unit] = self._load_local_state() - - def _emit_state(self): - # Emit this units lock status. - for lock in sorted(self.requests[hookenv.local_unit()].keys()): - if self.granted(lock): - self.msg('Granted {}'.format(lock)) - else: - self.msg('Waiting on {}'.format(lock)) - - def _save_state(self): - self.msg('Publishing state'.format(self._name())) - if hookenv.is_leader(): - # sort_keys to ensure stability. - raw = json.dumps(self.grants, sort_keys=True) - hookenv.leader_set({self.key: raw}) - - local_unit = hookenv.local_unit() - - if self.relid is None: - # No peers relation yet. Fallback to local state. - self.msg('No peer relation. Saving local state') - self._save_local_state(self.requests[local_unit]) - else: - # sort_keys to ensure stability. - raw = json.dumps(self.requests[local_unit], sort_keys=True) - hookenv.relation_set(self.relid, relation_settings={self.key: raw}) - - def _load_peer_state(self): - requests = {} - units = set(hookenv.related_units(self.relid)) - units.add(hookenv.local_unit()) - for unit in units: - raw = hookenv.relation_get(self.key, unit, self.relid) - if raw: - requests[unit] = json.loads(raw) - return requests - - def _local_state_filename(self): - # Include the class name. We allow multiple BaseCoordinator - # subclasses to be instantiated, and they are singletons, so - # this avoids conflicts (unless someone creates and uses two - # BaseCoordinator subclasses with the same class name, so don't - # do that). - return '.charmhelpers.coordinator.{}'.format(self._name()) - - def _load_local_state(self): - fn = self._local_state_filename() - if os.path.exists(fn): - with open(fn, 'r') as f: - return json.load(f) - return {} - - def _save_local_state(self, state): - fn = self._local_state_filename() - with open(fn, 'w') as f: - json.dump(state, f) - - def _release_granted(self): - # At the end of every hook, release all locks granted to - # this unit. If a hook neglects to make use of what it - # requested, it will just have to make the request again. - # Implicit release is the only way this will work, as - # if the unit is standalone there may be no future triggers - # called to do a manual release. - unit = hookenv.local_unit() - for lock in list(self.requests[unit].keys()): - if self.granted(lock): - self.msg('Released local {} lock'.format(lock)) - del self.requests[unit][lock] - - -class Serial(BaseCoordinator): - def default_grant(self, lock, unit, granted, queue): - '''Default logic to grant a lock to a unit. Unless overridden, - only one unit may hold the lock and it will be granted to the - earliest queued request. - - To define custom logic for $lock, create a subclass and - define a grant_$lock method. - - `unit` is the unit name making the request. - - `granted` is the set of units already granted the lock. It will - never include `unit`. It may be empty. - - `queue` is the list of units waiting for the lock, ordered by time - of request. It will always include `unit`, but `unit` is not - necessarily first. - - Returns True if the lock should be granted to `unit`. - ''' - return unit == queue[0] and not granted - - -def _implicit_peer_relation_name(): - md = hookenv.metadata() - assert 'peers' in md, 'No peer relations in metadata.yaml' - return sorted(md['peers'].keys())[0] - - -# A human readable, sortable UTC timestamp format. -_timestamp_format = '%Y-%m-%d %H:%M:%S.%fZ' - - -def _utcnow(): # pragma: no cover - # This wrapper exists as mocking datetime methods is problematic. - return datetime.utcnow() - - -def _timestamp(): - return _utcnow().strftime(_timestamp_format) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/__init__.py b/charms/trusty/cassandra/hooks/charmhelpers/core/__init__.py deleted file mode 100644 index d1400a0..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/__init__.py +++ /dev/null @@ -1,15 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/decorators.py b/charms/trusty/cassandra/hooks/charmhelpers/core/decorators.py deleted file mode 100644 index bb05620..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/decorators.py +++ /dev/null @@ -1,57 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -# -# Copyright 2014 Canonical Ltd. -# -# Authors: -# Edward Hope-Morley <opentastic@gmail.com> -# - -import time - -from charmhelpers.core.hookenv import ( - log, - INFO, -) - - -def retry_on_exception(num_retries, base_delay=0, exc_type=Exception): - """If the decorated function raises exception exc_type, allow num_retries - retry attempts before raise the exception. - """ - def _retry_on_exception_inner_1(f): - def _retry_on_exception_inner_2(*args, **kwargs): - retries = num_retries - multiplier = 1 - while True: - try: - return f(*args, **kwargs) - except exc_type: - if not retries: - raise - - delay = base_delay * multiplier - multiplier += 1 - log("Retrying '%s' %d more times (delay=%s)" % - (f.__name__, retries, delay), level=INFO) - retries -= 1 - if delay: - time.sleep(delay) - - return _retry_on_exception_inner_2 - - return _retry_on_exception_inner_1 diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/files.py b/charms/trusty/cassandra/hooks/charmhelpers/core/files.py deleted file mode 100644 index 0f12d32..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/files.py +++ /dev/null @@ -1,45 +0,0 @@ -#!/usr/bin/env python -# -*- coding: utf-8 -*- - -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -__author__ = 'Jorge Niedbalski <niedbalski@ubuntu.com>' - -import os -import subprocess - - -def sed(filename, before, after, flags='g'): - """ - Search and replaces the given pattern on filename. - - :param filename: relative or absolute file path. - :param before: expression to be replaced (see 'man sed') - :param after: expression to replace with (see 'man sed') - :param flags: sed-compatible regex flags in example, to make - the search and replace case insensitive, specify ``flags="i"``. - The ``g`` flag is always specified regardless, so you do not - need to remember to include it when overriding this parameter. - :returns: If the sed command exit code was zero then return, - otherwise raise CalledProcessError. - """ - expression = r's/{0}/{1}/{2}'.format(before, - after, flags) - - return subprocess.check_call(["sed", "-i", "-r", "-e", - expression, - os.path.expanduser(filename)]) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/fstab.py b/charms/trusty/cassandra/hooks/charmhelpers/core/fstab.py deleted file mode 100644 index 3056fba..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/fstab.py +++ /dev/null @@ -1,134 +0,0 @@ -#!/usr/bin/env python -# -*- coding: utf-8 -*- - -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -import io -import os - -__author__ = 'Jorge Niedbalski R. <jorge.niedbalski@canonical.com>' - - -class Fstab(io.FileIO): - """This class extends file in order to implement a file reader/writer - for file `/etc/fstab` - """ - - class Entry(object): - """Entry class represents a non-comment line on the `/etc/fstab` file - """ - def __init__(self, device, mountpoint, filesystem, - options, d=0, p=0): - self.device = device - self.mountpoint = mountpoint - self.filesystem = filesystem - - if not options: - options = "defaults" - - self.options = options - self.d = int(d) - self.p = int(p) - - def __eq__(self, o): - return str(self) == str(o) - - def __str__(self): - return "{} {} {} {} {} {}".format(self.device, - self.mountpoint, - self.filesystem, - self.options, - self.d, - self.p) - - DEFAULT_PATH = os.path.join(os.path.sep, 'etc', 'fstab') - - def __init__(self, path=None): - if path: - self._path = path - else: - self._path = self.DEFAULT_PATH - super(Fstab, self).__init__(self._path, 'rb+') - - def _hydrate_entry(self, line): - # NOTE: use split with no arguments to split on any - # whitespace including tabs - return Fstab.Entry(*filter( - lambda x: x not in ('', None), - line.strip("\n").split())) - - @property - def entries(self): - self.seek(0) - for line in self.readlines(): - line = line.decode('us-ascii') - try: - if line.strip() and not line.strip().startswith("#"): - yield self._hydrate_entry(line) - except ValueError: - pass - - def get_entry_by_attr(self, attr, value): - for entry in self.entries: - e_attr = getattr(entry, attr) - if e_attr == value: - return entry - return None - - def add_entry(self, entry): - if self.get_entry_by_attr('device', entry.device): - return False - - self.write((str(entry) + '\n').encode('us-ascii')) - self.truncate() - return entry - - def remove_entry(self, entry): - self.seek(0) - - lines = [l.decode('us-ascii') for l in self.readlines()] - - found = False - for index, line in enumerate(lines): - if line.strip() and not line.strip().startswith("#"): - if self._hydrate_entry(line) == entry: - found = True - break - - if not found: - return False - - lines.remove(line) - - self.seek(0) - self.write(''.join(lines).encode('us-ascii')) - self.truncate() - return True - - @classmethod - def remove_by_mountpoint(cls, mountpoint, path=None): - fstab = cls(path=path) - entry = fstab.get_entry_by_attr('mountpoint', mountpoint) - if entry: - return fstab.remove_entry(entry) - return False - - @classmethod - def add(cls, device, mountpoint, filesystem, options=None, path=None): - return cls(path=path).add_entry(Fstab.Entry(device, - mountpoint, filesystem, - options=options)) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/hookenv.py b/charms/trusty/cassandra/hooks/charmhelpers/core/hookenv.py deleted file mode 100644 index 3912e6e..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/hookenv.py +++ /dev/null @@ -1,1026 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -"Interactions with the Juju environment" -# Copyright 2013 Canonical Ltd. -# -# Authors: -# Charm Helpers Developers <juju@lists.ubuntu.com> - -from __future__ import print_function -import copy -from distutils.version import LooseVersion -from functools import wraps -import glob -import os -import json -import yaml -import socket -import subprocess -import sys -import errno -import tempfile -from subprocess import CalledProcessError - -import six -if not six.PY3: - from UserDict import UserDict -else: - from collections import UserDict - -CRITICAL = "CRITICAL" -ERROR = "ERROR" -WARNING = "WARNING" -INFO = "INFO" -DEBUG = "DEBUG" -MARKER = object() - -cache = {} - - -def cached(func): - """Cache return values for multiple executions of func + args - - For example:: - - @cached - def unit_get(attribute): - pass - - unit_get('test') - - will cache the result of unit_get + 'test' for future calls. - """ - @wraps(func) - def wrapper(*args, **kwargs): - global cache - key = str((func, args, kwargs)) - try: - return cache[key] - except KeyError: - pass # Drop out of the exception handler scope. - res = func(*args, **kwargs) - cache[key] = res - return res - wrapper._wrapped = func - return wrapper - - -def flush(key): - """Flushes any entries from function cache where the - key is found in the function+args """ - flush_list = [] - for item in cache: - if key in item: - flush_list.append(item) - for item in flush_list: - del cache[item] - - -def log(message, level=None): - """Write a message to the juju log""" - command = ['juju-log'] - if level: - command += ['-l', level] - if not isinstance(message, six.string_types): - message = repr(message) - command += [message] - # Missing juju-log should not cause failures in unit tests - # Send log output to stderr - try: - subprocess.call(command) - except OSError as e: - if e.errno == errno.ENOENT: - if level: - message = "{}: {}".format(level, message) - message = "juju-log: {}".format(message) - print(message, file=sys.stderr) - else: - raise - - -class Serializable(UserDict): - """Wrapper, an object that can be serialized to yaml or json""" - - def __init__(self, obj): - # wrap the object - UserDict.__init__(self) - self.data = obj - - def __getattr__(self, attr): - # See if this object has attribute. - if attr in ("json", "yaml", "data"): - return self.__dict__[attr] - # Check for attribute in wrapped object. - got = getattr(self.data, attr, MARKER) - if got is not MARKER: - return got - # Proxy to the wrapped object via dict interface. - try: - return self.data[attr] - except KeyError: - raise AttributeError(attr) - - def __getstate__(self): - # Pickle as a standard dictionary. - return self.data - - def __setstate__(self, state): - # Unpickle into our wrapper. - self.data = state - - def json(self): - """Serialize the object to json""" - return json.dumps(self.data) - - def yaml(self): - """Serialize the object to yaml""" - return yaml.dump(self.data) - - -def execution_environment(): - """A convenient bundling of the current execution context""" - context = {} - context['conf'] = config() - if relation_id(): - context['reltype'] = relation_type() - context['relid'] = relation_id() - context['rel'] = relation_get() - context['unit'] = local_unit() - context['rels'] = relations() - context['env'] = os.environ - return context - - -def in_relation_hook(): - """Determine whether we're running in a relation hook""" - return 'JUJU_RELATION' in os.environ - - -def relation_type(): - """The scope for the current relation hook""" - return os.environ.get('JUJU_RELATION', None) - - -@cached -def relation_id(relation_name=None, service_or_unit=None): - """The relation ID for the current or a specified relation""" - if not relation_name and not service_or_unit: - return os.environ.get('JUJU_RELATION_ID', None) - elif relation_name and service_or_unit: - service_name = service_or_unit.split('/')[0] - for relid in relation_ids(relation_name): - remote_service = remote_service_name(relid) - if remote_service == service_name: - return relid - else: - raise ValueError('Must specify neither or both of relation_name and service_or_unit') - - -def local_unit(): - """Local unit ID""" - return os.environ['JUJU_UNIT_NAME'] - - -def remote_unit(): - """The remote unit for the current relation hook""" - return os.environ.get('JUJU_REMOTE_UNIT', None) - - -def service_name(): - """The name service group this unit belongs to""" - return local_unit().split('/')[0] - - -@cached -def remote_service_name(relid=None): - """The remote service name for a given relation-id (or the current relation)""" - if relid is None: - unit = remote_unit() - else: - units = related_units(relid) - unit = units[0] if units else None - return unit.split('/')[0] if unit else None - - -def hook_name(): - """The name of the currently executing hook""" - return os.environ.get('JUJU_HOOK_NAME', os.path.basename(sys.argv[0])) - - -class Config(dict): - """A dictionary representation of the charm's config.yaml, with some - extra features: - - - See which values in the dictionary have changed since the previous hook. - - For values that have changed, see what the previous value was. - - Store arbitrary data for use in a later hook. - - NOTE: Do not instantiate this object directly - instead call - ``hookenv.config()``, which will return an instance of :class:`Config`. - - Example usage:: - - >>> # inside a hook - >>> from charmhelpers.core import hookenv - >>> config = hookenv.config() - >>> config['foo'] - 'bar' - >>> # store a new key/value for later use - >>> config['mykey'] = 'myval' - - - >>> # user runs `juju set mycharm foo=baz` - >>> # now we're inside subsequent config-changed hook - >>> config = hookenv.config() - >>> config['foo'] - 'baz' - >>> # test to see if this val has changed since last hook - >>> config.changed('foo') - True - >>> # what was the previous value? - >>> config.previous('foo') - 'bar' - >>> # keys/values that we add are preserved across hooks - >>> config['mykey'] - 'myval' - - """ - CONFIG_FILE_NAME = '.juju-persistent-config' - - def __init__(self, *args, **kw): - super(Config, self).__init__(*args, **kw) - self.implicit_save = True - self._prev_dict = None - self.path = os.path.join(charm_dir(), Config.CONFIG_FILE_NAME) - if os.path.exists(self.path): - self.load_previous() - atexit(self._implicit_save) - - def load_previous(self, path=None): - """Load previous copy of config from disk. - - In normal usage you don't need to call this method directly - it - is called automatically at object initialization. - - :param path: - - File path from which to load the previous config. If `None`, - config is loaded from the default location. If `path` is - specified, subsequent `save()` calls will write to the same - path. - - """ - self.path = path or self.path - with open(self.path) as f: - self._prev_dict = json.load(f) - for k, v in copy.deepcopy(self._prev_dict).items(): - if k not in self: - self[k] = v - - def changed(self, key): - """Return True if the current value for this key is different from - the previous value. - - """ - if self._prev_dict is None: - return True - return self.previous(key) != self.get(key) - - def previous(self, key): - """Return previous value for this key, or None if there - is no previous value. - - """ - if self._prev_dict: - return self._prev_dict.get(key) - return None - - def save(self): - """Save this config to disk. - - If the charm is using the :mod:`Services Framework <services.base>` - or :meth:'@hook <Hooks.hook>' decorator, this - is called automatically at the end of successful hook execution. - Otherwise, it should be called directly by user code. - - To disable automatic saves, set ``implicit_save=False`` on this - instance. - - """ - with open(self.path, 'w') as f: - json.dump(self, f) - - def _implicit_save(self): - if self.implicit_save: - self.save() - - -@cached -def config(scope=None): - """Juju charm configuration""" - config_cmd_line = ['config-get'] - if scope is not None: - config_cmd_line.append(scope) - config_cmd_line.append('--format=json') - try: - config_data = json.loads( - subprocess.check_output(config_cmd_line).decode('UTF-8')) - if scope is not None: - return config_data - return Config(config_data) - except ValueError: - return None - - -@cached -def relation_get(attribute=None, unit=None, rid=None): - """Get relation information""" - _args = ['relation-get', '--format=json'] - if rid: - _args.append('-r') - _args.append(rid) - _args.append(attribute or '-') - if unit: - _args.append(unit) - try: - return json.loads(subprocess.check_output(_args).decode('UTF-8')) - except ValueError: - return None - except CalledProcessError as e: - if e.returncode == 2: - return None - raise - - -def relation_set(relation_id=None, relation_settings=None, **kwargs): - """Set relation information for the current unit""" - relation_settings = relation_settings if relation_settings else {} - relation_cmd_line = ['relation-set'] - accepts_file = "--file" in subprocess.check_output( - relation_cmd_line + ["--help"], universal_newlines=True) - if relation_id is not None: - relation_cmd_line.extend(('-r', relation_id)) - settings = relation_settings.copy() - settings.update(kwargs) - for key, value in settings.items(): - # Force value to be a string: it always should, but some call - # sites pass in things like dicts or numbers. - if value is not None: - settings[key] = "{}".format(value) - if accepts_file: - # --file was introduced in Juju 1.23.2. Use it by default if - # available, since otherwise we'll break if the relation data is - # too big. Ideally we should tell relation-set to read the data from - # stdin, but that feature is broken in 1.23.2: Bug #1454678. - with tempfile.NamedTemporaryFile(delete=False) as settings_file: - settings_file.write(yaml.safe_dump(settings).encode("utf-8")) - subprocess.check_call( - relation_cmd_line + ["--file", settings_file.name]) - os.remove(settings_file.name) - else: - for key, value in settings.items(): - if value is None: - relation_cmd_line.append('{}='.format(key)) - else: - relation_cmd_line.append('{}={}'.format(key, value)) - subprocess.check_call(relation_cmd_line) - # Flush cache of any relation-gets for local unit - flush(local_unit()) - - -def relation_clear(r_id=None): - ''' Clears any relation data already set on relation r_id ''' - settings = relation_get(rid=r_id, - unit=local_unit()) - for setting in settings: - if setting not in ['public-address', 'private-address']: - settings[setting] = None - relation_set(relation_id=r_id, - **settings) - - -@cached -def relation_ids(reltype=None): - """A list of relation_ids""" - reltype = reltype or relation_type() - relid_cmd_line = ['relation-ids', '--format=json'] - if reltype is not None: - relid_cmd_line.append(reltype) - return json.loads( - subprocess.check_output(relid_cmd_line).decode('UTF-8')) or [] - return [] - - -@cached -def related_units(relid=None): - """A list of related units""" - relid = relid or relation_id() - units_cmd_line = ['relation-list', '--format=json'] - if relid is not None: - units_cmd_line.extend(('-r', relid)) - return json.loads( - subprocess.check_output(units_cmd_line).decode('UTF-8')) or [] - - -@cached -def relation_for_unit(unit=None, rid=None): - """Get the json represenation of a unit's relation""" - unit = unit or remote_unit() - relation = relation_get(unit=unit, rid=rid) - for key in relation: - if key.endswith('-list'): - relation[key] = relation[key].split() - relation['__unit__'] = unit - return relation - - -@cached -def relations_for_id(relid=None): - """Get relations of a specific relation ID""" - relation_data = [] - relid = relid or relation_ids() - for unit in related_units(relid): - unit_data = relation_for_unit(unit, relid) - unit_data['__relid__'] = relid - relation_data.append(unit_data) - return relation_data - - -@cached -def relations_of_type(reltype=None): - """Get relations of a specific type""" - relation_data = [] - reltype = reltype or relation_type() - for relid in relation_ids(reltype): - for relation in relations_for_id(relid): - relation['__relid__'] = relid - relation_data.append(relation) - return relation_data - - -@cached -def metadata(): - """Get the current charm metadata.yaml contents as a python object""" - with open(os.path.join(charm_dir(), 'metadata.yaml')) as md: - return yaml.safe_load(md) - - -@cached -def relation_types(): - """Get a list of relation types supported by this charm""" - rel_types = [] - md = metadata() - for key in ('provides', 'requires', 'peers'): - section = md.get(key) - if section: - rel_types.extend(section.keys()) - return rel_types - - -@cached -def peer_relation_id(): - '''Get the peers relation id if a peers relation has been joined, else None.''' - md = metadata() - section = md.get('peers') - if section: - for key in section: - relids = relation_ids(key) - if relids: - return relids[0] - return None - - -@cached -def relation_to_interface(relation_name): - """ - Given the name of a relation, return the interface that relation uses. - - :returns: The interface name, or ``None``. - """ - return relation_to_role_and_interface(relation_name)[1] - - -@cached -def relation_to_role_and_interface(relation_name): - """ - Given the name of a relation, return the role and the name of the interface - that relation uses (where role is one of ``provides``, ``requires``, or ``peers``). - - :returns: A tuple containing ``(role, interface)``, or ``(None, None)``. - """ - _metadata = metadata() - for role in ('provides', 'requires', 'peers'): - interface = _metadata.get(role, {}).get(relation_name, {}).get('interface') - if interface: - return role, interface - return None, None - - -@cached -def role_and_interface_to_relations(role, interface_name): - """ - Given a role and interface name, return a list of relation names for the - current charm that use that interface under that role (where role is one - of ``provides``, ``requires``, or ``peers``). - - :returns: A list of relation names. - """ - _metadata = metadata() - results = [] - for relation_name, relation in _metadata.get(role, {}).items(): - if relation['interface'] == interface_name: - results.append(relation_name) - return results - - -@cached -def interface_to_relations(interface_name): - """ - Given an interface, return a list of relation names for the current - charm that use that interface. - - :returns: A list of relation names. - """ - results = [] - for role in ('provides', 'requires', 'peers'): - results.extend(role_and_interface_to_relations(role, interface_name)) - return results - - -@cached -def charm_name(): - """Get the name of the current charm as is specified on metadata.yaml""" - return metadata().get('name') - - -@cached -def relations(): - """Get a nested dictionary of relation data for all related units""" - rels = {} - for reltype in relation_types(): - relids = {} - for relid in relation_ids(reltype): - units = {local_unit(): relation_get(unit=local_unit(), rid=relid)} - for unit in related_units(relid): - reldata = relation_get(unit=unit, rid=relid) - units[unit] = reldata - relids[relid] = units - rels[reltype] = relids - return rels - - -@cached -def is_relation_made(relation, keys='private-address'): - ''' - Determine whether a relation is established by checking for - presence of key(s). If a list of keys is provided, they - must all be present for the relation to be identified as made - ''' - if isinstance(keys, str): - keys = [keys] - for r_id in relation_ids(relation): - for unit in related_units(r_id): - context = {} - for k in keys: - context[k] = relation_get(k, rid=r_id, - unit=unit) - if None not in context.values(): - return True - return False - - -def open_port(port, protocol="TCP"): - """Open a service network port""" - _args = ['open-port'] - _args.append('{}/{}'.format(port, protocol)) - subprocess.check_call(_args) - - -def close_port(port, protocol="TCP"): - """Close a service network port""" - _args = ['close-port'] - _args.append('{}/{}'.format(port, protocol)) - subprocess.check_call(_args) - - -@cached -def unit_get(attribute): - """Get the unit ID for the remote unit""" - _args = ['unit-get', '--format=json', attribute] - try: - return json.loads(subprocess.check_output(_args).decode('UTF-8')) - except ValueError: - return None - - -def unit_public_ip(): - """Get this unit's public IP address""" - return _ensure_ip(unit_get('public-address')) - - -def unit_private_ip(): - """Get this unit's private IP address""" - return _ensure_ip(unit_get('private-address')) - - -def _ensure_ip(addr): - """If addr is a hostname, resolve it to an IP address""" - if not addr: - return None - # We need to use socket.getaddrinfo for IPv6 support. - info = socket.getaddrinfo(addr, None) - if info is None: - # Should never happen - raise ValueError("Invalid result None from getaddinfo") - try: - return info[0][4][0] - except IndexError: - # Should never happen - raise ValueError("Invalid result {!r} from getaddinfo".format(info)) - - -@cached -def storage_get(attribute=None, storage_id=None): - """Get storage attributes""" - _args = ['storage-get', '--format=json'] - if storage_id: - _args.extend(('-s', storage_id)) - if attribute: - _args.append(attribute) - try: - return json.loads(subprocess.check_output(_args).decode('UTF-8')) - except ValueError: - return None - - -@cached -def storage_list(storage_name=None): - """List the storage IDs for the unit""" - _args = ['storage-list', '--format=json'] - if storage_name: - _args.append(storage_name) - try: - return json.loads(subprocess.check_output(_args).decode('UTF-8')) - except ValueError: - return None - except OSError as e: - import errno - if e.errno == errno.ENOENT: - # storage-list does not exist - return [] - raise - - -class UnregisteredHookError(Exception): - """Raised when an undefined hook is called""" - pass - - -class Hooks(object): - """A convenient handler for hook functions. - - Example:: - - hooks = Hooks() - - # register a hook, taking its name from the function name - @hooks.hook() - def install(): - pass # your code here - - # register a hook, providing a custom hook name - @hooks.hook("config-changed") - def config_changed(): - pass # your code here - - if __name__ == "__main__": - # execute a hook based on the name the program is called by - hooks.execute(sys.argv) - """ - - def __init__(self, config_save=None): - super(Hooks, self).__init__() - self._hooks = {} - - # For unknown reasons, we allow the Hooks constructor to override - # config().implicit_save. - if config_save is not None: - config().implicit_save = config_save - - def register(self, name, function): - """Register a hook""" - self._hooks[name] = function - - def execute(self, args): - """Execute a registered hook based on args[0]""" - _run_atstart() - hook_name = os.path.basename(args[0]) - if hook_name in self._hooks: - try: - self._hooks[hook_name]() - except SystemExit as x: - if x.code is None or x.code == 0: - _run_atexit() - raise - _run_atexit() - else: - raise UnregisteredHookError(hook_name) - - def hook(self, *hook_names): - """Decorator, registering them as hooks""" - def wrapper(decorated): - for hook_name in hook_names: - self.register(hook_name, decorated) - else: - self.register(decorated.__name__, decorated) - if '_' in decorated.__name__: - self.register( - decorated.__name__.replace('_', '-'), decorated) - return decorated - return wrapper - - -def charm_dir(): - """Return the root directory of the current charm""" - return os.environ.get('CHARM_DIR') - - -@cached -def action_get(key=None): - """Gets the value of an action parameter, or all key/value param pairs""" - cmd = ['action-get'] - if key is not None: - cmd.append(key) - cmd.append('--format=json') - action_data = json.loads(subprocess.check_output(cmd).decode('UTF-8')) - return action_data - - -def action_set(values): - """Sets the values to be returned after the action finishes""" - cmd = ['action-set'] - for k, v in list(values.items()): - cmd.append('{}={}'.format(k, v)) - subprocess.check_call(cmd) - - -def action_fail(message): - """Sets the action status to failed and sets the error message. - - The results set by action_set are preserved.""" - subprocess.check_call(['action-fail', message]) - - -def action_name(): - """Get the name of the currently executing action.""" - return os.environ.get('JUJU_ACTION_NAME') - - -def action_uuid(): - """Get the UUID of the currently executing action.""" - return os.environ.get('JUJU_ACTION_UUID') - - -def action_tag(): - """Get the tag for the currently executing action.""" - return os.environ.get('JUJU_ACTION_TAG') - - -def status_set(workload_state, message): - """Set the workload state with a message - - Use status-set to set the workload state with a message which is visible - to the user via juju status. If the status-set command is not found then - assume this is juju < 1.23 and juju-log the message unstead. - - workload_state -- valid juju workload state. - message -- status update message - """ - valid_states = ['maintenance', 'blocked', 'waiting', 'active'] - if workload_state not in valid_states: - raise ValueError( - '{!r} is not a valid workload state'.format(workload_state) - ) - cmd = ['status-set', workload_state, message] - try: - ret = subprocess.call(cmd) - if ret == 0: - return - except OSError as e: - if e.errno != errno.ENOENT: - raise - log_message = 'status-set failed: {} {}'.format(workload_state, - message) - log(log_message, level='INFO') - - -def status_get(): - """Retrieve the previously set juju workload state and message - - If the status-get command is not found then assume this is juju < 1.23 and - return 'unknown', "" - - """ - cmd = ['status-get', "--format=json", "--include-data"] - try: - raw_status = subprocess.check_output(cmd) - except OSError as e: - if e.errno == errno.ENOENT: - return ('unknown', "") - else: - raise - else: - status = json.loads(raw_status.decode("UTF-8")) - return (status["status"], status["message"]) - - -def translate_exc(from_exc, to_exc): - def inner_translate_exc1(f): - @wraps(f) - def inner_translate_exc2(*args, **kwargs): - try: - return f(*args, **kwargs) - except from_exc: - raise to_exc - - return inner_translate_exc2 - - return inner_translate_exc1 - - -@translate_exc(from_exc=OSError, to_exc=NotImplementedError) -def is_leader(): - """Does the current unit hold the juju leadership - - Uses juju to determine whether the current unit is the leader of its peers - """ - cmd = ['is-leader', '--format=json'] - return json.loads(subprocess.check_output(cmd).decode('UTF-8')) - - -@translate_exc(from_exc=OSError, to_exc=NotImplementedError) -def leader_get(attribute=None): - """Juju leader get value(s)""" - cmd = ['leader-get', '--format=json'] + [attribute or '-'] - return json.loads(subprocess.check_output(cmd).decode('UTF-8')) - - -@translate_exc(from_exc=OSError, to_exc=NotImplementedError) -def leader_set(settings=None, **kwargs): - """Juju leader set value(s)""" - # Don't log secrets. - # log("Juju leader-set '%s'" % (settings), level=DEBUG) - cmd = ['leader-set'] - settings = settings or {} - settings.update(kwargs) - for k, v in settings.items(): - if v is None: - cmd.append('{}='.format(k)) - else: - cmd.append('{}={}'.format(k, v)) - subprocess.check_call(cmd) - - -@translate_exc(from_exc=OSError, to_exc=NotImplementedError) -def payload_register(ptype, klass, pid): - """ is used while a hook is running to let Juju know that a - payload has been started.""" - cmd = ['payload-register'] - for x in [ptype, klass, pid]: - cmd.append(x) - subprocess.check_call(cmd) - - -@translate_exc(from_exc=OSError, to_exc=NotImplementedError) -def payload_unregister(klass, pid): - """ is used while a hook is running to let Juju know - that a payload has been manually stopped. The <class> and <id> provided - must match a payload that has been previously registered with juju using - payload-register.""" - cmd = ['payload-unregister'] - for x in [klass, pid]: - cmd.append(x) - subprocess.check_call(cmd) - - -@translate_exc(from_exc=OSError, to_exc=NotImplementedError) -def payload_status_set(klass, pid, status): - """is used to update the current status of a registered payload. - The <class> and <id> provided must match a payload that has been previously - registered with juju using payload-register. The <status> must be one of the - follow: starting, started, stopping, stopped""" - cmd = ['payload-status-set'] - for x in [klass, pid, status]: - cmd.append(x) - subprocess.check_call(cmd) - - -@translate_exc(from_exc=OSError, to_exc=NotImplementedError) -def resource_get(name): - """used to fetch the resource path of the given name. - - <name> must match a name of defined resource in metadata.yaml - - returns either a path or False if resource not available - """ - if not name: - return False - - cmd = ['resource-get', name] - try: - return subprocess.check_output(cmd).decode('UTF-8') - except subprocess.CalledProcessError: - return False - - -@cached -def juju_version(): - """Full version string (eg. '1.23.3.1-trusty-amd64')""" - # Per https://bugs.launchpad.net/juju-core/+bug/1455368/comments/1 - jujud = glob.glob('/var/lib/juju/tools/machine-*/jujud')[0] - return subprocess.check_output([jujud, 'version'], - universal_newlines=True).strip() - - -@cached -def has_juju_version(minimum_version): - """Return True if the Juju version is at least the provided version""" - return LooseVersion(juju_version()) >= LooseVersion(minimum_version) - - -_atexit = [] -_atstart = [] - - -def atstart(callback, *args, **kwargs): - '''Schedule a callback to run before the main hook. - - Callbacks are run in the order they were added. - - This is useful for modules and classes to perform initialization - and inject behavior. In particular: - - - Run common code before all of your hooks, such as logging - the hook name or interesting relation data. - - Defer object or module initialization that requires a hook - context until we know there actually is a hook context, - making testing easier. - - Rather than requiring charm authors to include boilerplate to - invoke your helper's behavior, have it run automatically if - your object is instantiated or module imported. - - This is not at all useful after your hook framework as been launched. - ''' - global _atstart - _atstart.append((callback, args, kwargs)) - - -def atexit(callback, *args, **kwargs): - '''Schedule a callback to run on successful hook completion. - - Callbacks are run in the reverse order that they were added.''' - _atexit.append((callback, args, kwargs)) - - -def _run_atstart(): - '''Hook frameworks must invoke this before running the main hook body.''' - global _atstart - for callback, args, kwargs in _atstart: - callback(*args, **kwargs) - del _atstart[:] - - -def _run_atexit(): - '''Hook frameworks must invoke this after the main hook body has - successfully completed. Do not invoke it if the hook fails.''' - global _atexit - for callback, args, kwargs in reversed(_atexit): - callback(*args, **kwargs) - del _atexit[:] - - -@translate_exc(from_exc=OSError, to_exc=NotImplementedError) -def network_get_primary_address(binding): - ''' - Retrieve the primary network address for a named binding - - :param binding: string. The name of a relation of extra-binding - :return: string. The primary IP address for the named binding - :raise: NotImplementedError if run on Juju < 2.0 - ''' - cmd = ['network-get', '--primary-address', binding] - return subprocess.check_output(cmd).strip() diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/host.py b/charms/trusty/cassandra/hooks/charmhelpers/core/host.py deleted file mode 100644 index 481087b..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/host.py +++ /dev/null @@ -1,695 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -"""Tools for working with the host system""" -# Copyright 2012 Canonical Ltd. -# -# Authors: -# Nick Moffitt <nick.moffitt@canonical.com> -# Matthew Wedgwood <matthew.wedgwood@canonical.com> - -import os -import re -import pwd -import glob -import grp -import random -import string -import subprocess -import hashlib -import functools -import itertools -from contextlib import contextmanager -from collections import OrderedDict - -import six - -from .hookenv import log -from .fstab import Fstab - - -def service_start(service_name): - """Start a system service""" - return service('start', service_name) - - -def service_stop(service_name): - """Stop a system service""" - return service('stop', service_name) - - -def service_restart(service_name): - """Restart a system service""" - return service('restart', service_name) - - -def service_reload(service_name, restart_on_failure=False): - """Reload a system service, optionally falling back to restart if - reload fails""" - service_result = service('reload', service_name) - if not service_result and restart_on_failure: - service_result = service('restart', service_name) - return service_result - - -def service_pause(service_name, init_dir="/etc/init", initd_dir="/etc/init.d"): - """Pause a system service. - - Stop it, and prevent it from starting again at boot.""" - stopped = True - if service_running(service_name): - stopped = service_stop(service_name) - upstart_file = os.path.join(init_dir, "{}.conf".format(service_name)) - sysv_file = os.path.join(initd_dir, service_name) - if init_is_systemd(): - service('disable', service_name) - elif os.path.exists(upstart_file): - override_path = os.path.join( - init_dir, '{}.override'.format(service_name)) - with open(override_path, 'w') as fh: - fh.write("manual\n") - elif os.path.exists(sysv_file): - subprocess.check_call(["update-rc.d", service_name, "disable"]) - else: - raise ValueError( - "Unable to detect {0} as SystemD, Upstart {1} or" - " SysV {2}".format( - service_name, upstart_file, sysv_file)) - return stopped - - -def service_resume(service_name, init_dir="/etc/init", - initd_dir="/etc/init.d"): - """Resume a system service. - - Reenable starting again at boot. Start the service""" - upstart_file = os.path.join(init_dir, "{}.conf".format(service_name)) - sysv_file = os.path.join(initd_dir, service_name) - if init_is_systemd(): - service('enable', service_name) - elif os.path.exists(upstart_file): - override_path = os.path.join( - init_dir, '{}.override'.format(service_name)) - if os.path.exists(override_path): - os.unlink(override_path) - elif os.path.exists(sysv_file): - subprocess.check_call(["update-rc.d", service_name, "enable"]) - else: - raise ValueError( - "Unable to detect {0} as SystemD, Upstart {1} or" - " SysV {2}".format( - service_name, upstart_file, sysv_file)) - - started = service_running(service_name) - if not started: - started = service_start(service_name) - return started - - -def service(action, service_name): - """Control a system service""" - if init_is_systemd(): - cmd = ['systemctl', action, service_name] - else: - cmd = ['service', service_name, action] - return subprocess.call(cmd) == 0 - - -def service_running(service_name): - """Determine whether a system service is running""" - if init_is_systemd(): - return service('is-active', service_name) - else: - try: - output = subprocess.check_output( - ['service', service_name, 'status'], - stderr=subprocess.STDOUT).decode('UTF-8') - except subprocess.CalledProcessError: - return False - else: - if ("start/running" in output or "is running" in output or - "up and running" in output): - return True - else: - return False - - -def service_available(service_name): - """Determine whether a system service is available""" - try: - subprocess.check_output( - ['service', service_name, 'status'], - stderr=subprocess.STDOUT).decode('UTF-8') - except subprocess.CalledProcessError as e: - return b'unrecognized service' not in e.output - else: - return True - - -SYSTEMD_SYSTEM = '/run/systemd/system' - - -def init_is_systemd(): - """Return True if the host system uses systemd, False otherwise.""" - return os.path.isdir(SYSTEMD_SYSTEM) - - -def adduser(username, password=None, shell='/bin/bash', system_user=False, - primary_group=None, secondary_groups=None): - """Add a user to the system. - - Will log but otherwise succeed if the user already exists. - - :param str username: Username to create - :param str password: Password for user; if ``None``, create a system user - :param str shell: The default shell for the user - :param bool system_user: Whether to create a login or system user - :param str primary_group: Primary group for user; defaults to username - :param list secondary_groups: Optional list of additional groups - - :returns: The password database entry struct, as returned by `pwd.getpwnam` - """ - try: - user_info = pwd.getpwnam(username) - log('user {0} already exists!'.format(username)) - except KeyError: - log('creating user {0}'.format(username)) - cmd = ['useradd'] - if system_user or password is None: - cmd.append('--system') - else: - cmd.extend([ - '--create-home', - '--shell', shell, - '--password', password, - ]) - if not primary_group: - try: - grp.getgrnam(username) - primary_group = username # avoid "group exists" error - except KeyError: - pass - if primary_group: - cmd.extend(['-g', primary_group]) - if secondary_groups: - cmd.extend(['-G', ','.join(secondary_groups)]) - cmd.append(username) - subprocess.check_call(cmd) - user_info = pwd.getpwnam(username) - return user_info - - -def user_exists(username): - """Check if a user exists""" - try: - pwd.getpwnam(username) - user_exists = True - except KeyError: - user_exists = False - return user_exists - - -def add_group(group_name, system_group=False): - """Add a group to the system""" - try: - group_info = grp.getgrnam(group_name) - log('group {0} already exists!'.format(group_name)) - except KeyError: - log('creating group {0}'.format(group_name)) - cmd = ['addgroup'] - if system_group: - cmd.append('--system') - else: - cmd.extend([ - '--group', - ]) - cmd.append(group_name) - subprocess.check_call(cmd) - group_info = grp.getgrnam(group_name) - return group_info - - -def add_user_to_group(username, group): - """Add a user to a group""" - cmd = ['gpasswd', '-a', username, group] - log("Adding user {} to group {}".format(username, group)) - subprocess.check_call(cmd) - - -def rsync(from_path, to_path, flags='-r', options=None): - """Replicate the contents of a path""" - options = options or ['--delete', '--executability'] - cmd = ['/usr/bin/rsync', flags] - cmd.extend(options) - cmd.append(from_path) - cmd.append(to_path) - log(" ".join(cmd)) - return subprocess.check_output(cmd).decode('UTF-8').strip() - - -def symlink(source, destination): - """Create a symbolic link""" - log("Symlinking {} as {}".format(source, destination)) - cmd = [ - 'ln', - '-sf', - source, - destination, - ] - subprocess.check_call(cmd) - - -def mkdir(path, owner='root', group='root', perms=0o555, force=False): - """Create a directory""" - log("Making dir {} {}:{} {:o}".format(path, owner, group, - perms)) - uid = pwd.getpwnam(owner).pw_uid - gid = grp.getgrnam(group).gr_gid - realpath = os.path.abspath(path) - path_exists = os.path.exists(realpath) - if path_exists and force: - if not os.path.isdir(realpath): - log("Removing non-directory file {} prior to mkdir()".format(path)) - os.unlink(realpath) - os.makedirs(realpath, perms) - elif not path_exists: - os.makedirs(realpath, perms) - os.chown(realpath, uid, gid) - os.chmod(realpath, perms) - - -def write_file(path, content, owner='root', group='root', perms=0o444): - """Create or overwrite a file with the contents of a byte string.""" - log("Writing file {} {}:{} {:o}".format(path, owner, group, perms)) - uid = pwd.getpwnam(owner).pw_uid - gid = grp.getgrnam(group).gr_gid - with open(path, 'wb') as target: - os.fchown(target.fileno(), uid, gid) - os.fchmod(target.fileno(), perms) - target.write(content) - - -def fstab_remove(mp): - """Remove the given mountpoint entry from /etc/fstab""" - return Fstab.remove_by_mountpoint(mp) - - -def fstab_add(dev, mp, fs, options=None): - """Adds the given device entry to the /etc/fstab file""" - return Fstab.add(dev, mp, fs, options=options) - - -def mount(device, mountpoint, options=None, persist=False, filesystem="ext3"): - """Mount a filesystem at a particular mountpoint""" - cmd_args = ['mount'] - if options is not None: - cmd_args.extend(['-o', options]) - cmd_args.extend([device, mountpoint]) - try: - subprocess.check_output(cmd_args) - except subprocess.CalledProcessError as e: - log('Error mounting {} at {}\n{}'.format(device, mountpoint, e.output)) - return False - - if persist: - return fstab_add(device, mountpoint, filesystem, options=options) - return True - - -def umount(mountpoint, persist=False): - """Unmount a filesystem""" - cmd_args = ['umount', mountpoint] - try: - subprocess.check_output(cmd_args) - except subprocess.CalledProcessError as e: - log('Error unmounting {}\n{}'.format(mountpoint, e.output)) - return False - - if persist: - return fstab_remove(mountpoint) - return True - - -def mounts(): - """Get a list of all mounted volumes as [[mountpoint,device],[...]]""" - with open('/proc/mounts') as f: - # [['/mount/point','/dev/path'],[...]] - system_mounts = [m[1::-1] for m in [l.strip().split() - for l in f.readlines()]] - return system_mounts - - -def fstab_mount(mountpoint): - """Mount filesystem using fstab""" - cmd_args = ['mount', mountpoint] - try: - subprocess.check_output(cmd_args) - except subprocess.CalledProcessError as e: - log('Error unmounting {}\n{}'.format(mountpoint, e.output)) - return False - return True - - -def file_hash(path, hash_type='md5'): - """Generate a hash checksum of the contents of 'path' or None if not found. - - :param str hash_type: Any hash alrgorithm supported by :mod:`hashlib`, - such as md5, sha1, sha256, sha512, etc. - """ - if os.path.exists(path): - h = getattr(hashlib, hash_type)() - with open(path, 'rb') as source: - h.update(source.read()) - return h.hexdigest() - else: - return None - - -def path_hash(path): - """Generate a hash checksum of all files matching 'path'. Standard - wildcards like '*' and '?' are supported, see documentation for the 'glob' - module for more information. - - :return: dict: A { filename: hash } dictionary for all matched files. - Empty if none found. - """ - return { - filename: file_hash(filename) - for filename in glob.iglob(path) - } - - -def check_hash(path, checksum, hash_type='md5'): - """Validate a file using a cryptographic checksum. - - :param str checksum: Value of the checksum used to validate the file. - :param str hash_type: Hash algorithm used to generate `checksum`. - Can be any hash alrgorithm supported by :mod:`hashlib`, - such as md5, sha1, sha256, sha512, etc. - :raises ChecksumError: If the file fails the checksum - - """ - actual_checksum = file_hash(path, hash_type) - if checksum != actual_checksum: - raise ChecksumError("'%s' != '%s'" % (checksum, actual_checksum)) - - -class ChecksumError(ValueError): - """A class derived from Value error to indicate the checksum failed.""" - pass - - -def restart_on_change(restart_map, stopstart=False): - """Restart services based on configuration files changing - - This function is used a decorator, for example:: - - @restart_on_change({ - '/etc/ceph/ceph.conf': [ 'cinder-api', 'cinder-volume' ] - '/etc/apache/sites-enabled/*': [ 'apache2' ] - }) - def config_changed(): - pass # your code here - - In this example, the cinder-api and cinder-volume services - would be restarted if /etc/ceph/ceph.conf is changed by the - ceph_client_changed function. The apache2 service would be - restarted if any file matching the pattern got changed, created - or removed. Standard wildcards are supported, see documentation - for the 'glob' module for more information. - - @param restart_map: {path_file_name: [service_name, ...] - @param stopstart: DEFAULT false; whether to stop, start OR restart - @returns result from decorated function - """ - def wrap(f): - @functools.wraps(f) - def wrapped_f(*args, **kwargs): - return restart_on_change_helper( - (lambda: f(*args, **kwargs)), restart_map, stopstart) - return wrapped_f - return wrap - - -def restart_on_change_helper(lambda_f, restart_map, stopstart=False): - """Helper function to perform the restart_on_change function. - - This is provided for decorators to restart services if files described - in the restart_map have changed after an invocation of lambda_f(). - - @param lambda_f: function to call. - @param restart_map: {file: [service, ...]} - @param stopstart: whether to stop, start or restart a service - @returns result of lambda_f() - """ - checksums = {path: path_hash(path) for path in restart_map} - r = lambda_f() - # create a list of lists of the services to restart - restarts = [restart_map[path] - for path in restart_map - if path_hash(path) != checksums[path]] - # create a flat list of ordered services without duplicates from lists - services_list = list(OrderedDict.fromkeys(itertools.chain(*restarts))) - if services_list: - actions = ('stop', 'start') if stopstart else ('restart',) - for action in actions: - for service_name in services_list: - service(action, service_name) - return r - - -def lsb_release(): - """Return /etc/lsb-release in a dict""" - d = {} - with open('/etc/lsb-release', 'r') as lsb: - for l in lsb: - k, v = l.split('=') - d[k.strip()] = v.strip() - return d - - -def pwgen(length=None): - """Generate a random pasword.""" - if length is None: - # A random length is ok to use a weak PRNG - length = random.choice(range(35, 45)) - alphanumeric_chars = [ - l for l in (string.ascii_letters + string.digits) - if l not in 'l0QD1vAEIOUaeiou'] - # Use a crypto-friendly PRNG (e.g. /dev/urandom) for making the - # actual password - random_generator = random.SystemRandom() - random_chars = [ - random_generator.choice(alphanumeric_chars) for _ in range(length)] - return(''.join(random_chars)) - - -def is_phy_iface(interface): - """Returns True if interface is not virtual, otherwise False.""" - if interface: - sys_net = '/sys/class/net' - if os.path.isdir(sys_net): - for iface in glob.glob(os.path.join(sys_net, '*')): - if '/virtual/' in os.path.realpath(iface): - continue - - if interface == os.path.basename(iface): - return True - - return False - - -def get_bond_master(interface): - """Returns bond master if interface is bond slave otherwise None. - - NOTE: the provided interface is expected to be physical - """ - if interface: - iface_path = '/sys/class/net/%s' % (interface) - if os.path.exists(iface_path): - if '/virtual/' in os.path.realpath(iface_path): - return None - - master = os.path.join(iface_path, 'master') - if os.path.exists(master): - master = os.path.realpath(master) - # make sure it is a bond master - if os.path.exists(os.path.join(master, 'bonding')): - return os.path.basename(master) - - return None - - -def list_nics(nic_type=None): - """Return a list of nics of given type(s)""" - if isinstance(nic_type, six.string_types): - int_types = [nic_type] - else: - int_types = nic_type - - interfaces = [] - if nic_type: - for int_type in int_types: - cmd = ['ip', 'addr', 'show', 'label', int_type + '*'] - ip_output = subprocess.check_output(cmd).decode('UTF-8') - ip_output = ip_output.split('\n') - ip_output = (line for line in ip_output if line) - for line in ip_output: - if line.split()[1].startswith(int_type): - matched = re.search('.*: (' + int_type + - r'[0-9]+\.[0-9]+)@.*', line) - if matched: - iface = matched.groups()[0] - else: - iface = line.split()[1].replace(":", "") - - if iface not in interfaces: - interfaces.append(iface) - else: - cmd = ['ip', 'a'] - ip_output = subprocess.check_output(cmd).decode('UTF-8').split('\n') - ip_output = (line.strip() for line in ip_output if line) - - key = re.compile('^[0-9]+:\s+(.+):') - for line in ip_output: - matched = re.search(key, line) - if matched: - iface = matched.group(1) - iface = iface.partition("@")[0] - if iface not in interfaces: - interfaces.append(iface) - - return interfaces - - -def set_nic_mtu(nic, mtu): - """Set the Maximum Transmission Unit (MTU) on a network interface.""" - cmd = ['ip', 'link', 'set', nic, 'mtu', mtu] - subprocess.check_call(cmd) - - -def get_nic_mtu(nic): - """Return the Maximum Transmission Unit (MTU) for a network interface.""" - cmd = ['ip', 'addr', 'show', nic] - ip_output = subprocess.check_output(cmd).decode('UTF-8').split('\n') - mtu = "" - for line in ip_output: - words = line.split() - if 'mtu' in words: - mtu = words[words.index("mtu") + 1] - return mtu - - -def get_nic_hwaddr(nic): - """Return the Media Access Control (MAC) for a network interface.""" - cmd = ['ip', '-o', '-0', 'addr', 'show', nic] - ip_output = subprocess.check_output(cmd).decode('UTF-8') - hwaddr = "" - words = ip_output.split() - if 'link/ether' in words: - hwaddr = words[words.index('link/ether') + 1] - return hwaddr - - -def cmp_pkgrevno(package, revno, pkgcache=None): - """Compare supplied revno with the revno of the installed package - - * 1 => Installed revno is greater than supplied arg - * 0 => Installed revno is the same as supplied arg - * -1 => Installed revno is less than supplied arg - - This function imports apt_cache function from charmhelpers.fetch if - the pkgcache argument is None. Be sure to add charmhelpers.fetch if - you call this function, or pass an apt_pkg.Cache() instance. - """ - import apt_pkg - if not pkgcache: - from charmhelpers.fetch import apt_cache - pkgcache = apt_cache() - pkg = pkgcache[package] - return apt_pkg.version_compare(pkg.current_ver.ver_str, revno) - - -@contextmanager -def chdir(directory): - """Change the current working directory to a different directory for a code - block and return the previous directory after the block exits. Useful to - run commands from a specificed directory. - - :param str directory: The directory path to change to for this context. - """ - cur = os.getcwd() - try: - yield os.chdir(directory) - finally: - os.chdir(cur) - - -def chownr(path, owner, group, follow_links=True, chowntopdir=False): - """Recursively change user and group ownership of files and directories - in given path. Doesn't chown path itself by default, only its children. - - :param str path: The string path to start changing ownership. - :param str owner: The owner string to use when looking up the uid. - :param str group: The group string to use when looking up the gid. - :param bool follow_links: Also Chown links if True - :param bool chowntopdir: Also chown path itself if True - """ - uid = pwd.getpwnam(owner).pw_uid - gid = grp.getgrnam(group).gr_gid - if follow_links: - chown = os.chown - else: - chown = os.lchown - - if chowntopdir: - broken_symlink = os.path.lexists(path) and not os.path.exists(path) - if not broken_symlink: - chown(path, uid, gid) - for root, dirs, files in os.walk(path): - for name in dirs + files: - full = os.path.join(root, name) - broken_symlink = os.path.lexists(full) and not os.path.exists(full) - if not broken_symlink: - chown(full, uid, gid) - - -def lchownr(path, owner, group): - """Recursively change user and group ownership of files and directories - in a given path, not following symbolic links. See the documentation for - 'os.lchown' for more information. - - :param str path: The string path to start changing ownership. - :param str owner: The owner string to use when looking up the uid. - :param str group: The group string to use when looking up the gid. - """ - chownr(path, owner, group, follow_links=False) - - -def get_total_ram(): - """The total amount of system RAM in bytes. - - This is what is reported by the OS, and may be overcommitted when - there are multiple containers hosted on the same machine. - """ - with open('/proc/meminfo', 'r') as f: - for line in f.readlines(): - if line: - key, value, unit = line.split() - if key == 'MemTotal:': - assert unit == 'kB', 'Unknown unit' - return int(value) * 1024 # Classic, not KiB. - raise NotImplementedError() diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/hugepage.py b/charms/trusty/cassandra/hooks/charmhelpers/core/hugepage.py deleted file mode 100644 index a783ad9..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/hugepage.py +++ /dev/null @@ -1,71 +0,0 @@ -# -*- coding: utf-8 -*- - -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -import yaml -from charmhelpers.core import fstab -from charmhelpers.core import sysctl -from charmhelpers.core.host import ( - add_group, - add_user_to_group, - fstab_mount, - mkdir, -) -from charmhelpers.core.strutils import bytes_from_string -from subprocess import check_output - - -def hugepage_support(user, group='hugetlb', nr_hugepages=256, - max_map_count=65536, mnt_point='/run/hugepages/kvm', - pagesize='2MB', mount=True, set_shmmax=False): - """Enable hugepages on system. - - Args: - user (str) -- Username to allow access to hugepages to - group (str) -- Group name to own hugepages - nr_hugepages (int) -- Number of pages to reserve - max_map_count (int) -- Number of Virtual Memory Areas a process can own - mnt_point (str) -- Directory to mount hugepages on - pagesize (str) -- Size of hugepages - mount (bool) -- Whether to Mount hugepages - """ - group_info = add_group(group) - gid = group_info.gr_gid - add_user_to_group(user, group) - if max_map_count < 2 * nr_hugepages: - max_map_count = 2 * nr_hugepages - sysctl_settings = { - 'vm.nr_hugepages': nr_hugepages, - 'vm.max_map_count': max_map_count, - 'vm.hugetlb_shm_group': gid, - } - if set_shmmax: - shmmax_current = int(check_output(['sysctl', '-n', 'kernel.shmmax'])) - shmmax_minsize = bytes_from_string(pagesize) * nr_hugepages - if shmmax_minsize > shmmax_current: - sysctl_settings['kernel.shmmax'] = shmmax_minsize - sysctl.create(yaml.dump(sysctl_settings), '/etc/sysctl.d/10-hugepage.conf') - mkdir(mnt_point, owner='root', group='root', perms=0o755, force=False) - lfstab = fstab.Fstab() - fstab_entry = lfstab.get_entry_by_attr('mountpoint', mnt_point) - if fstab_entry: - lfstab.remove_entry(fstab_entry) - entry = lfstab.Entry('nodev', mnt_point, 'hugetlbfs', - 'mode=1770,gid={},pagesize={}'.format(gid, pagesize), 0, 0) - lfstab.add_entry(entry) - if mount: - fstab_mount(mnt_point) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/kernel.py b/charms/trusty/cassandra/hooks/charmhelpers/core/kernel.py deleted file mode 100644 index 5dc6495..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/kernel.py +++ /dev/null @@ -1,68 +0,0 @@ -#!/usr/bin/env python -# -*- coding: utf-8 -*- - -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -__author__ = "Jorge Niedbalski <jorge.niedbalski@canonical.com>" - -from charmhelpers.core.hookenv import ( - log, - INFO -) - -from subprocess import check_call, check_output -import re - - -def modprobe(module, persist=True): - """Load a kernel module and configure for auto-load on reboot.""" - cmd = ['modprobe', module] - - log('Loading kernel module %s' % module, level=INFO) - - check_call(cmd) - if persist: - with open('/etc/modules', 'r+') as modules: - if module not in modules.read(): - modules.write(module) - - -def rmmod(module, force=False): - """Remove a module from the linux kernel""" - cmd = ['rmmod'] - if force: - cmd.append('-f') - cmd.append(module) - log('Removing kernel module %s' % module, level=INFO) - return check_call(cmd) - - -def lsmod(): - """Shows what kernel modules are currently loaded""" - return check_output(['lsmod'], - universal_newlines=True) - - -def is_module_loaded(module): - """Checks if a kernel module is already loaded""" - matches = re.findall('^%s[ ]+' % module, lsmod(), re.M) - return len(matches) > 0 - - -def update_initramfs(version='all'): - """Updates an initramfs image""" - return check_call(["update-initramfs", "-k", version, "-u"]) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/services/__init__.py b/charms/trusty/cassandra/hooks/charmhelpers/core/services/__init__.py deleted file mode 100644 index 0928158..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/services/__init__.py +++ /dev/null @@ -1,18 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -from .base import * # NOQA -from .helpers import * # NOQA diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/services/base.py b/charms/trusty/cassandra/hooks/charmhelpers/core/services/base.py deleted file mode 100644 index a42660c..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/services/base.py +++ /dev/null @@ -1,353 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -import os -import json -from inspect import getargspec -from collections import Iterable, OrderedDict - -from charmhelpers.core import host -from charmhelpers.core import hookenv - - -__all__ = ['ServiceManager', 'ManagerCallback', - 'PortManagerCallback', 'open_ports', 'close_ports', 'manage_ports', - 'service_restart', 'service_stop'] - - -class ServiceManager(object): - def __init__(self, services=None): - """ - Register a list of services, given their definitions. - - Service definitions are dicts in the following formats (all keys except - 'service' are optional):: - - { - "service": <service name>, - "required_data": <list of required data contexts>, - "provided_data": <list of provided data contexts>, - "data_ready": <one or more callbacks>, - "data_lost": <one or more callbacks>, - "start": <one or more callbacks>, - "stop": <one or more callbacks>, - "ports": <list of ports to manage>, - } - - The 'required_data' list should contain dicts of required data (or - dependency managers that act like dicts and know how to collect the data). - Only when all items in the 'required_data' list are populated are the list - of 'data_ready' and 'start' callbacks executed. See `is_ready()` for more - information. - - The 'provided_data' list should contain relation data providers, most likely - a subclass of :class:`charmhelpers.core.services.helpers.RelationContext`, - that will indicate a set of data to set on a given relation. - - The 'data_ready' value should be either a single callback, or a list of - callbacks, to be called when all items in 'required_data' pass `is_ready()`. - Each callback will be called with the service name as the only parameter. - After all of the 'data_ready' callbacks are called, the 'start' callbacks - are fired. - - The 'data_lost' value should be either a single callback, or a list of - callbacks, to be called when a 'required_data' item no longer passes - `is_ready()`. Each callback will be called with the service name as the - only parameter. After all of the 'data_lost' callbacks are called, - the 'stop' callbacks are fired. - - The 'start' value should be either a single callback, or a list of - callbacks, to be called when starting the service, after the 'data_ready' - callbacks are complete. Each callback will be called with the service - name as the only parameter. This defaults to - `[host.service_start, services.open_ports]`. - - The 'stop' value should be either a single callback, or a list of - callbacks, to be called when stopping the service. If the service is - being stopped because it no longer has all of its 'required_data', this - will be called after all of the 'data_lost' callbacks are complete. - Each callback will be called with the service name as the only parameter. - This defaults to `[services.close_ports, host.service_stop]`. - - The 'ports' value should be a list of ports to manage. The default - 'start' handler will open the ports after the service is started, - and the default 'stop' handler will close the ports prior to stopping - the service. - - - Examples: - - The following registers an Upstart service called bingod that depends on - a mongodb relation and which runs a custom `db_migrate` function prior to - restarting the service, and a Runit service called spadesd:: - - manager = services.ServiceManager([ - { - 'service': 'bingod', - 'ports': [80, 443], - 'required_data': [MongoRelation(), config(), {'my': 'data'}], - 'data_ready': [ - services.template(source='bingod.conf'), - services.template(source='bingod.ini', - target='/etc/bingod.ini', - owner='bingo', perms=0400), - ], - }, - { - 'service': 'spadesd', - 'data_ready': services.template(source='spadesd_run.j2', - target='/etc/sv/spadesd/run', - perms=0555), - 'start': runit_start, - 'stop': runit_stop, - }, - ]) - manager.manage() - """ - self._ready_file = os.path.join(hookenv.charm_dir(), 'READY-SERVICES.json') - self._ready = None - self.services = OrderedDict() - for service in services or []: - service_name = service['service'] - self.services[service_name] = service - - def manage(self): - """ - Handle the current hook by doing The Right Thing with the registered services. - """ - hookenv._run_atstart() - try: - hook_name = hookenv.hook_name() - if hook_name == 'stop': - self.stop_services() - else: - self.reconfigure_services() - self.provide_data() - except SystemExit as x: - if x.code is None or x.code == 0: - hookenv._run_atexit() - hookenv._run_atexit() - - def provide_data(self): - """ - Set the relation data for each provider in the ``provided_data`` list. - - A provider must have a `name` attribute, which indicates which relation - to set data on, and a `provide_data()` method, which returns a dict of - data to set. - - The `provide_data()` method can optionally accept two parameters: - - * ``remote_service`` The name of the remote service that the data will - be provided to. The `provide_data()` method will be called once - for each connected service (not unit). This allows the method to - tailor its data to the given service. - * ``service_ready`` Whether or not the service definition had all of - its requirements met, and thus the ``data_ready`` callbacks run. - - Note that the ``provided_data`` methods are now called **after** the - ``data_ready`` callbacks are run. This gives the ``data_ready`` callbacks - a chance to generate any data necessary for the providing to the remote - services. - """ - for service_name, service in self.services.items(): - service_ready = self.is_ready(service_name) - for provider in service.get('provided_data', []): - for relid in hookenv.relation_ids(provider.name): - units = hookenv.related_units(relid) - if not units: - continue - remote_service = units[0].split('/')[0] - argspec = getargspec(provider.provide_data) - if len(argspec.args) > 1: - data = provider.provide_data(remote_service, service_ready) - else: - data = provider.provide_data() - if data: - hookenv.relation_set(relid, data) - - def reconfigure_services(self, *service_names): - """ - Update all files for one or more registered services, and, - if ready, optionally restart them. - - If no service names are given, reconfigures all registered services. - """ - for service_name in service_names or self.services.keys(): - if self.is_ready(service_name): - self.fire_event('data_ready', service_name) - self.fire_event('start', service_name, default=[ - service_restart, - manage_ports]) - self.save_ready(service_name) - else: - if self.was_ready(service_name): - self.fire_event('data_lost', service_name) - self.fire_event('stop', service_name, default=[ - manage_ports, - service_stop]) - self.save_lost(service_name) - - def stop_services(self, *service_names): - """ - Stop one or more registered services, by name. - - If no service names are given, stops all registered services. - """ - for service_name in service_names or self.services.keys(): - self.fire_event('stop', service_name, default=[ - manage_ports, - service_stop]) - - def get_service(self, service_name): - """ - Given the name of a registered service, return its service definition. - """ - service = self.services.get(service_name) - if not service: - raise KeyError('Service not registered: %s' % service_name) - return service - - def fire_event(self, event_name, service_name, default=None): - """ - Fire a data_ready, data_lost, start, or stop event on a given service. - """ - service = self.get_service(service_name) - callbacks = service.get(event_name, default) - if not callbacks: - return - if not isinstance(callbacks, Iterable): - callbacks = [callbacks] - for callback in callbacks: - if isinstance(callback, ManagerCallback): - callback(self, service_name, event_name) - else: - callback(service_name) - - def is_ready(self, service_name): - """ - Determine if a registered service is ready, by checking its 'required_data'. - - A 'required_data' item can be any mapping type, and is considered ready - if `bool(item)` evaluates as True. - """ - service = self.get_service(service_name) - reqs = service.get('required_data', []) - return all(bool(req) for req in reqs) - - def _load_ready_file(self): - if self._ready is not None: - return - if os.path.exists(self._ready_file): - with open(self._ready_file) as fp: - self._ready = set(json.load(fp)) - else: - self._ready = set() - - def _save_ready_file(self): - if self._ready is None: - return - with open(self._ready_file, 'w') as fp: - json.dump(list(self._ready), fp) - - def save_ready(self, service_name): - """ - Save an indicator that the given service is now data_ready. - """ - self._load_ready_file() - self._ready.add(service_name) - self._save_ready_file() - - def save_lost(self, service_name): - """ - Save an indicator that the given service is no longer data_ready. - """ - self._load_ready_file() - self._ready.discard(service_name) - self._save_ready_file() - - def was_ready(self, service_name): - """ - Determine if the given service was previously data_ready. - """ - self._load_ready_file() - return service_name in self._ready - - -class ManagerCallback(object): - """ - Special case of a callback that takes the `ServiceManager` instance - in addition to the service name. - - Subclasses should implement `__call__` which should accept three parameters: - - * `manager` The `ServiceManager` instance - * `service_name` The name of the service it's being triggered for - * `event_name` The name of the event that this callback is handling - """ - def __call__(self, manager, service_name, event_name): - raise NotImplementedError() - - -class PortManagerCallback(ManagerCallback): - """ - Callback class that will open or close ports, for use as either - a start or stop action. - """ - def __call__(self, manager, service_name, event_name): - service = manager.get_service(service_name) - new_ports = service.get('ports', []) - port_file = os.path.join(hookenv.charm_dir(), '.{}.ports'.format(service_name)) - if os.path.exists(port_file): - with open(port_file) as fp: - old_ports = fp.read().split(',') - for old_port in old_ports: - if bool(old_port): - old_port = int(old_port) - if old_port not in new_ports: - hookenv.close_port(old_port) - with open(port_file, 'w') as fp: - fp.write(','.join(str(port) for port in new_ports)) - for port in new_ports: - if event_name == 'start': - hookenv.open_port(port) - elif event_name == 'stop': - hookenv.close_port(port) - - -def service_stop(service_name): - """ - Wrapper around host.service_stop to prevent spurious "unknown service" - messages in the logs. - """ - if host.service_running(service_name): - host.service_stop(service_name) - - -def service_restart(service_name): - """ - Wrapper around host.service_restart to prevent spurious "unknown service" - messages in the logs. - """ - if host.service_available(service_name): - if host.service_running(service_name): - host.service_restart(service_name) - else: - host.service_start(service_name) - - -# Convenience aliases -open_ports = close_ports = manage_ports = PortManagerCallback() diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/services/helpers.py b/charms/trusty/cassandra/hooks/charmhelpers/core/services/helpers.py deleted file mode 100644 index 2423704..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/services/helpers.py +++ /dev/null @@ -1,292 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -import os -import yaml - -from charmhelpers.core import hookenv -from charmhelpers.core import host -from charmhelpers.core import templating - -from charmhelpers.core.services.base import ManagerCallback - - -__all__ = ['RelationContext', 'TemplateCallback', - 'render_template', 'template'] - - -class RelationContext(dict): - """ - Base class for a context generator that gets relation data from juju. - - Subclasses must provide the attributes `name`, which is the name of the - interface of interest, `interface`, which is the type of the interface of - interest, and `required_keys`, which is the set of keys required for the - relation to be considered complete. The data for all interfaces matching - the `name` attribute that are complete will used to populate the dictionary - values (see `get_data`, below). - - The generated context will be namespaced under the relation :attr:`name`, - to prevent potential naming conflicts. - - :param str name: Override the relation :attr:`name`, since it can vary from charm to charm - :param list additional_required_keys: Extend the list of :attr:`required_keys` - """ - name = None - interface = None - - def __init__(self, name=None, additional_required_keys=None): - if not hasattr(self, 'required_keys'): - self.required_keys = [] - - if name is not None: - self.name = name - if additional_required_keys: - self.required_keys.extend(additional_required_keys) - self.get_data() - - def __bool__(self): - """ - Returns True if all of the required_keys are available. - """ - return self.is_ready() - - __nonzero__ = __bool__ - - def __repr__(self): - return super(RelationContext, self).__repr__() - - def is_ready(self): - """ - Returns True if all of the `required_keys` are available from any units. - """ - ready = len(self.get(self.name, [])) > 0 - if not ready: - hookenv.log('Incomplete relation: {}'.format(self.__class__.__name__), hookenv.DEBUG) - return ready - - def _is_ready(self, unit_data): - """ - Helper method that tests a set of relation data and returns True if - all of the `required_keys` are present. - """ - return set(unit_data.keys()).issuperset(set(self.required_keys)) - - def get_data(self): - """ - Retrieve the relation data for each unit involved in a relation and, - if complete, store it in a list under `self[self.name]`. This - is automatically called when the RelationContext is instantiated. - - The units are sorted lexographically first by the service ID, then by - the unit ID. Thus, if an interface has two other services, 'db:1' - and 'db:2', with 'db:1' having two units, 'wordpress/0' and 'wordpress/1', - and 'db:2' having one unit, 'mediawiki/0', all of which have a complete - set of data, the relation data for the units will be stored in the - order: 'wordpress/0', 'wordpress/1', 'mediawiki/0'. - - If you only care about a single unit on the relation, you can just - access it as `{{ interface[0]['key'] }}`. However, if you can at all - support multiple units on a relation, you should iterate over the list, - like:: - - {% for unit in interface -%} - {{ unit['key'] }}{% if not loop.last %},{% endif %} - {%- endfor %} - - Note that since all sets of relation data from all related services and - units are in a single list, if you need to know which service or unit a - set of data came from, you'll need to extend this class to preserve - that information. - """ - if not hookenv.relation_ids(self.name): - return - - ns = self.setdefault(self.name, []) - for rid in sorted(hookenv.relation_ids(self.name)): - for unit in sorted(hookenv.related_units(rid)): - reldata = hookenv.relation_get(rid=rid, unit=unit) - if self._is_ready(reldata): - ns.append(reldata) - - def provide_data(self): - """ - Return data to be relation_set for this interface. - """ - return {} - - -class MysqlRelation(RelationContext): - """ - Relation context for the `mysql` interface. - - :param str name: Override the relation :attr:`name`, since it can vary from charm to charm - :param list additional_required_keys: Extend the list of :attr:`required_keys` - """ - name = 'db' - interface = 'mysql' - - def __init__(self, *args, **kwargs): - self.required_keys = ['host', 'user', 'password', 'database'] - RelationContext.__init__(self, *args, **kwargs) - - -class HttpRelation(RelationContext): - """ - Relation context for the `http` interface. - - :param str name: Override the relation :attr:`name`, since it can vary from charm to charm - :param list additional_required_keys: Extend the list of :attr:`required_keys` - """ - name = 'website' - interface = 'http' - - def __init__(self, *args, **kwargs): - self.required_keys = ['host', 'port'] - RelationContext.__init__(self, *args, **kwargs) - - def provide_data(self): - return { - 'host': hookenv.unit_get('private-address'), - 'port': 80, - } - - -class RequiredConfig(dict): - """ - Data context that loads config options with one or more mandatory options. - - Once the required options have been changed from their default values, all - config options will be available, namespaced under `config` to prevent - potential naming conflicts (for example, between a config option and a - relation property). - - :param list *args: List of options that must be changed from their default values. - """ - - def __init__(self, *args): - self.required_options = args - self['config'] = hookenv.config() - with open(os.path.join(hookenv.charm_dir(), 'config.yaml')) as fp: - self.config = yaml.load(fp).get('options', {}) - - def __bool__(self): - for option in self.required_options: - if option not in self['config']: - return False - current_value = self['config'][option] - default_value = self.config[option].get('default') - if current_value == default_value: - return False - if current_value in (None, '') and default_value in (None, ''): - return False - return True - - def __nonzero__(self): - return self.__bool__() - - -class StoredContext(dict): - """ - A data context that always returns the data that it was first created with. - - This is useful to do a one-time generation of things like passwords, that - will thereafter use the same value that was originally generated, instead - of generating a new value each time it is run. - """ - def __init__(self, file_name, config_data): - """ - If the file exists, populate `self` with the data from the file. - Otherwise, populate with the given data and persist it to the file. - """ - if os.path.exists(file_name): - self.update(self.read_context(file_name)) - else: - self.store_context(file_name, config_data) - self.update(config_data) - - def store_context(self, file_name, config_data): - if not os.path.isabs(file_name): - file_name = os.path.join(hookenv.charm_dir(), file_name) - with open(file_name, 'w') as file_stream: - os.fchmod(file_stream.fileno(), 0o600) - yaml.dump(config_data, file_stream) - - def read_context(self, file_name): - if not os.path.isabs(file_name): - file_name = os.path.join(hookenv.charm_dir(), file_name) - with open(file_name, 'r') as file_stream: - data = yaml.load(file_stream) - if not data: - raise OSError("%s is empty" % file_name) - return data - - -class TemplateCallback(ManagerCallback): - """ - Callback class that will render a Jinja2 template, for use as a ready - action. - - :param str source: The template source file, relative to - `$CHARM_DIR/templates` - - :param str target: The target to write the rendered template to (or None) - :param str owner: The owner of the rendered file - :param str group: The group of the rendered file - :param int perms: The permissions of the rendered file - :param partial on_change_action: functools partial to be executed when - rendered file changes - :param jinja2 loader template_loader: A jinja2 template loader - - :return str: The rendered template - """ - def __init__(self, source, target, - owner='root', group='root', perms=0o444, - on_change_action=None, template_loader=None): - self.source = source - self.target = target - self.owner = owner - self.group = group - self.perms = perms - self.on_change_action = on_change_action - self.template_loader = template_loader - - def __call__(self, manager, service_name, event_name): - pre_checksum = '' - if self.on_change_action and os.path.isfile(self.target): - pre_checksum = host.file_hash(self.target) - service = manager.get_service(service_name) - context = {'ctx': {}} - for ctx in service.get('required_data', []): - context.update(ctx) - context['ctx'].update(ctx) - - result = templating.render(self.source, self.target, context, - self.owner, self.group, self.perms, - template_loader=self.template_loader) - if self.on_change_action: - if pre_checksum == host.file_hash(self.target): - hookenv.log( - 'No change detected: {}'.format(self.target), - hookenv.DEBUG) - else: - self.on_change_action() - - return result - - -# Convenience aliases for templates -render_template = template = TemplateCallback diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/strutils.py b/charms/trusty/cassandra/hooks/charmhelpers/core/strutils.py deleted file mode 100644 index 7e3f969..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/strutils.py +++ /dev/null @@ -1,72 +0,0 @@ -#!/usr/bin/env python -# -*- coding: utf-8 -*- - -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -import six -import re - - -def bool_from_string(value): - """Interpret string value as boolean. - - Returns True if value translates to True otherwise False. - """ - if isinstance(value, six.string_types): - value = six.text_type(value) - else: - msg = "Unable to interpret non-string value '%s' as boolean" % (value) - raise ValueError(msg) - - value = value.strip().lower() - - if value in ['y', 'yes', 'true', 't', 'on']: - return True - elif value in ['n', 'no', 'false', 'f', 'off']: - return False - - msg = "Unable to interpret string value '%s' as boolean" % (value) - raise ValueError(msg) - - -def bytes_from_string(value): - """Interpret human readable string value as bytes. - - Returns int - """ - BYTE_POWER = { - 'K': 1, - 'KB': 1, - 'M': 2, - 'MB': 2, - 'G': 3, - 'GB': 3, - 'T': 4, - 'TB': 4, - 'P': 5, - 'PB': 5, - } - if isinstance(value, six.string_types): - value = six.text_type(value) - else: - msg = "Unable to interpret non-string value '%s' as boolean" % (value) - raise ValueError(msg) - matches = re.match("([0-9]+)([a-zA-Z]+)", value) - if not matches: - msg = "Unable to interpret string value '%s' as bytes" % (value) - raise ValueError(msg) - return int(matches.group(1)) * (1024 ** BYTE_POWER[matches.group(2)]) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/sysctl.py b/charms/trusty/cassandra/hooks/charmhelpers/core/sysctl.py deleted file mode 100644 index 21cc8ab..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/sysctl.py +++ /dev/null @@ -1,56 +0,0 @@ -#!/usr/bin/env python -# -*- coding: utf-8 -*- - -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -import yaml - -from subprocess import check_call - -from charmhelpers.core.hookenv import ( - log, - DEBUG, - ERROR, -) - -__author__ = 'Jorge Niedbalski R. <jorge.niedbalski@canonical.com>' - - -def create(sysctl_dict, sysctl_file): - """Creates a sysctl.conf file from a YAML associative array - - :param sysctl_dict: a YAML-formatted string of sysctl options eg "{ 'kernel.max_pid': 1337 }" - :type sysctl_dict: str - :param sysctl_file: path to the sysctl file to be saved - :type sysctl_file: str or unicode - :returns: None - """ - try: - sysctl_dict_parsed = yaml.safe_load(sysctl_dict) - except yaml.YAMLError: - log("Error parsing YAML sysctl_dict: {}".format(sysctl_dict), - level=ERROR) - return - - with open(sysctl_file, "w") as fd: - for key, value in sysctl_dict_parsed.items(): - fd.write("{}={}\n".format(key, value)) - - log("Updating sysctl_file: %s values: %s" % (sysctl_file, sysctl_dict_parsed), - level=DEBUG) - - check_call(["sysctl", "-p", sysctl_file]) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/templating.py b/charms/trusty/cassandra/hooks/charmhelpers/core/templating.py deleted file mode 100644 index d2d8eaf..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/templating.py +++ /dev/null @@ -1,81 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -import os - -from charmhelpers.core import host -from charmhelpers.core import hookenv - - -def render(source, target, context, owner='root', group='root', - perms=0o444, templates_dir=None, encoding='UTF-8', template_loader=None): - """ - Render a template. - - The `source` path, if not absolute, is relative to the `templates_dir`. - - The `target` path should be absolute. It can also be `None`, in which - case no file will be written. - - The context should be a dict containing the values to be replaced in the - template. - - The `owner`, `group`, and `perms` options will be passed to `write_file`. - - If omitted, `templates_dir` defaults to the `templates` folder in the charm. - - The rendered template will be written to the file as well as being returned - as a string. - - Note: Using this requires python-jinja2; if it is not installed, calling - this will attempt to use charmhelpers.fetch.apt_install to install it. - """ - try: - from jinja2 import FileSystemLoader, Environment, exceptions - except ImportError: - try: - from charmhelpers.fetch import apt_install - except ImportError: - hookenv.log('Could not import jinja2, and could not import ' - 'charmhelpers.fetch to install it', - level=hookenv.ERROR) - raise - apt_install('python-jinja2', fatal=True) - from jinja2 import FileSystemLoader, Environment, exceptions - - if template_loader: - template_env = Environment(loader=template_loader) - else: - if templates_dir is None: - templates_dir = os.path.join(hookenv.charm_dir(), 'templates') - template_env = Environment(loader=FileSystemLoader(templates_dir)) - try: - source = source - template = template_env.get_template(source) - except exceptions.TemplateNotFound as e: - hookenv.log('Could not load template %s from %s.' % - (source, templates_dir), - level=hookenv.ERROR) - raise e - content = template.render(context) - if target is not None: - target_dir = os.path.dirname(target) - if not os.path.exists(target_dir): - # This is a terrible default directory permission, as the file - # or its siblings will often contain secrets. - host.mkdir(os.path.dirname(target), owner, group, perms=0o755) - host.write_file(target, content.encode(encoding), owner, group, perms) - return content diff --git a/charms/trusty/cassandra/hooks/charmhelpers/core/unitdata.py b/charms/trusty/cassandra/hooks/charmhelpers/core/unitdata.py deleted file mode 100644 index 338104e..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/core/unitdata.py +++ /dev/null @@ -1,521 +0,0 @@ -#!/usr/bin/env python -# -*- coding: utf-8 -*- -# -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. -# -# -# Authors: -# Kapil Thangavelu <kapil.foss@gmail.com> -# -""" -Intro ------ - -A simple way to store state in units. This provides a key value -storage with support for versioned, transactional operation, -and can calculate deltas from previous values to simplify unit logic -when processing changes. - - -Hook Integration ----------------- - -There are several extant frameworks for hook execution, including - - - charmhelpers.core.hookenv.Hooks - - charmhelpers.core.services.ServiceManager - -The storage classes are framework agnostic, one simple integration is -via the HookData contextmanager. It will record the current hook -execution environment (including relation data, config data, etc.), -setup a transaction and allow easy access to the changes from -previously seen values. One consequence of the integration is the -reservation of particular keys ('rels', 'unit', 'env', 'config', -'charm_revisions') for their respective values. - -Here's a fully worked integration example using hookenv.Hooks:: - - from charmhelper.core import hookenv, unitdata - - hook_data = unitdata.HookData() - db = unitdata.kv() - hooks = hookenv.Hooks() - - @hooks.hook - def config_changed(): - # Print all changes to configuration from previously seen - # values. - for changed, (prev, cur) in hook_data.conf.items(): - print('config changed', changed, - 'previous value', prev, - 'current value', cur) - - # Get some unit specific bookeeping - if not db.get('pkg_key'): - key = urllib.urlopen('https://example.com/pkg_key').read() - db.set('pkg_key', key) - - # Directly access all charm config as a mapping. - conf = db.getrange('config', True) - - # Directly access all relation data as a mapping - rels = db.getrange('rels', True) - - if __name__ == '__main__': - with hook_data(): - hook.execute() - - -A more basic integration is via the hook_scope context manager which simply -manages transaction scope (and records hook name, and timestamp):: - - >>> from unitdata import kv - >>> db = kv() - >>> with db.hook_scope('install'): - ... # do work, in transactional scope. - ... db.set('x', 1) - >>> db.get('x') - 1 - - -Usage ------ - -Values are automatically json de/serialized to preserve basic typing -and complex data struct capabilities (dicts, lists, ints, booleans, etc). - -Individual values can be manipulated via get/set:: - - >>> kv.set('y', True) - >>> kv.get('y') - True - - # We can set complex values (dicts, lists) as a single key. - >>> kv.set('config', {'a': 1, 'b': True'}) - - # Also supports returning dictionaries as a record which - # provides attribute access. - >>> config = kv.get('config', record=True) - >>> config.b - True - - -Groups of keys can be manipulated with update/getrange:: - - >>> kv.update({'z': 1, 'y': 2}, prefix="gui.") - >>> kv.getrange('gui.', strip=True) - {'z': 1, 'y': 2} - -When updating values, its very helpful to understand which values -have actually changed and how have they changed. The storage -provides a delta method to provide for this:: - - >>> data = {'debug': True, 'option': 2} - >>> delta = kv.delta(data, 'config.') - >>> delta.debug.previous - None - >>> delta.debug.current - True - >>> delta - {'debug': (None, True), 'option': (None, 2)} - -Note the delta method does not persist the actual change, it needs to -be explicitly saved via 'update' method:: - - >>> kv.update(data, 'config.') - -Values modified in the context of a hook scope retain historical values -associated to the hookname. - - >>> with db.hook_scope('config-changed'): - ... db.set('x', 42) - >>> db.gethistory('x') - [(1, u'x', 1, u'install', u'2015-01-21T16:49:30.038372'), - (2, u'x', 42, u'config-changed', u'2015-01-21T16:49:30.038786')] - -""" - -import collections -import contextlib -import datetime -import itertools -import json -import os -import pprint -import sqlite3 -import sys - -__author__ = 'Kapil Thangavelu <kapil.foss@gmail.com>' - - -class Storage(object): - """Simple key value database for local unit state within charms. - - Modifications are not persisted unless :meth:`flush` is called. - - To support dicts, lists, integer, floats, and booleans values - are automatically json encoded/decoded. - """ - def __init__(self, path=None): - self.db_path = path - if path is None: - if 'UNIT_STATE_DB' in os.environ: - self.db_path = os.environ['UNIT_STATE_DB'] - else: - self.db_path = os.path.join( - os.environ.get('CHARM_DIR', ''), '.unit-state.db') - self.conn = sqlite3.connect('%s' % self.db_path) - self.cursor = self.conn.cursor() - self.revision = None - self._closed = False - self._init() - - def close(self): - if self._closed: - return - self.flush(False) - self.cursor.close() - self.conn.close() - self._closed = True - - def get(self, key, default=None, record=False): - self.cursor.execute('select data from kv where key=?', [key]) - result = self.cursor.fetchone() - if not result: - return default - if record: - return Record(json.loads(result[0])) - return json.loads(result[0]) - - def getrange(self, key_prefix, strip=False): - """ - Get a range of keys starting with a common prefix as a mapping of - keys to values. - - :param str key_prefix: Common prefix among all keys - :param bool strip: Optionally strip the common prefix from the key - names in the returned dict - :return dict: A (possibly empty) dict of key-value mappings - """ - self.cursor.execute("select key, data from kv where key like ?", - ['%s%%' % key_prefix]) - result = self.cursor.fetchall() - - if not result: - return {} - if not strip: - key_prefix = '' - return dict([ - (k[len(key_prefix):], json.loads(v)) for k, v in result]) - - def update(self, mapping, prefix=""): - """ - Set the values of multiple keys at once. - - :param dict mapping: Mapping of keys to values - :param str prefix: Optional prefix to apply to all keys in `mapping` - before setting - """ - for k, v in mapping.items(): - self.set("%s%s" % (prefix, k), v) - - def unset(self, key): - """ - Remove a key from the database entirely. - """ - self.cursor.execute('delete from kv where key=?', [key]) - if self.revision and self.cursor.rowcount: - self.cursor.execute( - 'insert into kv_revisions values (?, ?, ?)', - [key, self.revision, json.dumps('DELETED')]) - - def unsetrange(self, keys=None, prefix=""): - """ - Remove a range of keys starting with a common prefix, from the database - entirely. - - :param list keys: List of keys to remove. - :param str prefix: Optional prefix to apply to all keys in ``keys`` - before removing. - """ - if keys is not None: - keys = ['%s%s' % (prefix, key) for key in keys] - self.cursor.execute('delete from kv where key in (%s)' % ','.join(['?'] * len(keys)), keys) - if self.revision and self.cursor.rowcount: - self.cursor.execute( - 'insert into kv_revisions values %s' % ','.join(['(?, ?, ?)'] * len(keys)), - list(itertools.chain.from_iterable((key, self.revision, json.dumps('DELETED')) for key in keys))) - else: - self.cursor.execute('delete from kv where key like ?', - ['%s%%' % prefix]) - if self.revision and self.cursor.rowcount: - self.cursor.execute( - 'insert into kv_revisions values (?, ?, ?)', - ['%s%%' % prefix, self.revision, json.dumps('DELETED')]) - - def set(self, key, value): - """ - Set a value in the database. - - :param str key: Key to set the value for - :param value: Any JSON-serializable value to be set - """ - serialized = json.dumps(value) - - self.cursor.execute('select data from kv where key=?', [key]) - exists = self.cursor.fetchone() - - # Skip mutations to the same value - if exists: - if exists[0] == serialized: - return value - - if not exists: - self.cursor.execute( - 'insert into kv (key, data) values (?, ?)', - (key, serialized)) - else: - self.cursor.execute(''' - update kv - set data = ? - where key = ?''', [serialized, key]) - - # Save - if not self.revision: - return value - - self.cursor.execute( - 'select 1 from kv_revisions where key=? and revision=?', - [key, self.revision]) - exists = self.cursor.fetchone() - - if not exists: - self.cursor.execute( - '''insert into kv_revisions ( - revision, key, data) values (?, ?, ?)''', - (self.revision, key, serialized)) - else: - self.cursor.execute( - ''' - update kv_revisions - set data = ? - where key = ? - and revision = ?''', - [serialized, key, self.revision]) - - return value - - def delta(self, mapping, prefix): - """ - return a delta containing values that have changed. - """ - previous = self.getrange(prefix, strip=True) - if not previous: - pk = set() - else: - pk = set(previous.keys()) - ck = set(mapping.keys()) - delta = DeltaSet() - - # added - for k in ck.difference(pk): - delta[k] = Delta(None, mapping[k]) - - # removed - for k in pk.difference(ck): - delta[k] = Delta(previous[k], None) - - # changed - for k in pk.intersection(ck): - c = mapping[k] - p = previous[k] - if c != p: - delta[k] = Delta(p, c) - - return delta - - @contextlib.contextmanager - def hook_scope(self, name=""): - """Scope all future interactions to the current hook execution - revision.""" - assert not self.revision - self.cursor.execute( - 'insert into hooks (hook, date) values (?, ?)', - (name or sys.argv[0], - datetime.datetime.utcnow().isoformat())) - self.revision = self.cursor.lastrowid - try: - yield self.revision - self.revision = None - except: - self.flush(False) - self.revision = None - raise - else: - self.flush() - - def flush(self, save=True): - if save: - self.conn.commit() - elif self._closed: - return - else: - self.conn.rollback() - - def _init(self): - self.cursor.execute(''' - create table if not exists kv ( - key text, - data text, - primary key (key) - )''') - self.cursor.execute(''' - create table if not exists kv_revisions ( - key text, - revision integer, - data text, - primary key (key, revision) - )''') - self.cursor.execute(''' - create table if not exists hooks ( - version integer primary key autoincrement, - hook text, - date text - )''') - self.conn.commit() - - def gethistory(self, key, deserialize=False): - self.cursor.execute( - ''' - select kv.revision, kv.key, kv.data, h.hook, h.date - from kv_revisions kv, - hooks h - where kv.key=? - and kv.revision = h.version - ''', [key]) - if deserialize is False: - return self.cursor.fetchall() - return map(_parse_history, self.cursor.fetchall()) - - def debug(self, fh=sys.stderr): - self.cursor.execute('select * from kv') - pprint.pprint(self.cursor.fetchall(), stream=fh) - self.cursor.execute('select * from kv_revisions') - pprint.pprint(self.cursor.fetchall(), stream=fh) - - -def _parse_history(d): - return (d[0], d[1], json.loads(d[2]), d[3], - datetime.datetime.strptime(d[-1], "%Y-%m-%dT%H:%M:%S.%f")) - - -class HookData(object): - """Simple integration for existing hook exec frameworks. - - Records all unit information, and stores deltas for processing - by the hook. - - Sample:: - - from charmhelper.core import hookenv, unitdata - - changes = unitdata.HookData() - db = unitdata.kv() - hooks = hookenv.Hooks() - - @hooks.hook - def config_changed(): - # View all changes to configuration - for changed, (prev, cur) in changes.conf.items(): - print('config changed', changed, - 'previous value', prev, - 'current value', cur) - - # Get some unit specific bookeeping - if not db.get('pkg_key'): - key = urllib.urlopen('https://example.com/pkg_key').read() - db.set('pkg_key', key) - - if __name__ == '__main__': - with changes(): - hook.execute() - - """ - def __init__(self): - self.kv = kv() - self.conf = None - self.rels = None - - @contextlib.contextmanager - def __call__(self): - from charmhelpers.core import hookenv - hook_name = hookenv.hook_name() - - with self.kv.hook_scope(hook_name): - self._record_charm_version(hookenv.charm_dir()) - delta_config, delta_relation = self._record_hook(hookenv) - yield self.kv, delta_config, delta_relation - - def _record_charm_version(self, charm_dir): - # Record revisions.. charm revisions are meaningless - # to charm authors as they don't control the revision. - # so logic dependnent on revision is not particularly - # useful, however it is useful for debugging analysis. - charm_rev = open( - os.path.join(charm_dir, 'revision')).read().strip() - charm_rev = charm_rev or '0' - revs = self.kv.get('charm_revisions', []) - if charm_rev not in revs: - revs.append(charm_rev.strip() or '0') - self.kv.set('charm_revisions', revs) - - def _record_hook(self, hookenv): - data = hookenv.execution_environment() - self.conf = conf_delta = self.kv.delta(data['conf'], 'config') - self.rels = rels_delta = self.kv.delta(data['rels'], 'rels') - self.kv.set('env', dict(data['env'])) - self.kv.set('unit', data['unit']) - self.kv.set('relid', data.get('relid')) - return conf_delta, rels_delta - - -class Record(dict): - - __slots__ = () - - def __getattr__(self, k): - if k in self: - return self[k] - raise AttributeError(k) - - -class DeltaSet(Record): - - __slots__ = () - - -Delta = collections.namedtuple('Delta', ['previous', 'current']) - - -_KV = None - - -def kv(): - global _KV - if _KV is None: - _KV = Storage() - return _KV diff --git a/charms/trusty/cassandra/hooks/charmhelpers/fetch/__init__.py b/charms/trusty/cassandra/hooks/charmhelpers/fetch/__init__.py deleted file mode 100644 index db0d86a..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/fetch/__init__.py +++ /dev/null @@ -1,464 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -import importlib -from tempfile import NamedTemporaryFile -import time -from yaml import safe_load -from charmhelpers.core.host import ( - lsb_release -) -import subprocess -from charmhelpers.core.hookenv import ( - config, - log, -) -import os - -import six -if six.PY3: - from urllib.parse import urlparse, urlunparse -else: - from urlparse import urlparse, urlunparse - - -CLOUD_ARCHIVE = """# Ubuntu Cloud Archive -deb http://ubuntu-cloud.archive.canonical.com/ubuntu {} main -""" -PROPOSED_POCKET = """# Proposed -deb http://archive.ubuntu.com/ubuntu {}-proposed main universe multiverse restricted -""" -CLOUD_ARCHIVE_POCKETS = { - # Folsom - 'folsom': 'precise-updates/folsom', - 'precise-folsom': 'precise-updates/folsom', - 'precise-folsom/updates': 'precise-updates/folsom', - 'precise-updates/folsom': 'precise-updates/folsom', - 'folsom/proposed': 'precise-proposed/folsom', - 'precise-folsom/proposed': 'precise-proposed/folsom', - 'precise-proposed/folsom': 'precise-proposed/folsom', - # Grizzly - 'grizzly': 'precise-updates/grizzly', - 'precise-grizzly': 'precise-updates/grizzly', - 'precise-grizzly/updates': 'precise-updates/grizzly', - 'precise-updates/grizzly': 'precise-updates/grizzly', - 'grizzly/proposed': 'precise-proposed/grizzly', - 'precise-grizzly/proposed': 'precise-proposed/grizzly', - 'precise-proposed/grizzly': 'precise-proposed/grizzly', - # Havana - 'havana': 'precise-updates/havana', - 'precise-havana': 'precise-updates/havana', - 'precise-havana/updates': 'precise-updates/havana', - 'precise-updates/havana': 'precise-updates/havana', - 'havana/proposed': 'precise-proposed/havana', - 'precise-havana/proposed': 'precise-proposed/havana', - 'precise-proposed/havana': 'precise-proposed/havana', - # Icehouse - 'icehouse': 'precise-updates/icehouse', - 'precise-icehouse': 'precise-updates/icehouse', - 'precise-icehouse/updates': 'precise-updates/icehouse', - 'precise-updates/icehouse': 'precise-updates/icehouse', - 'icehouse/proposed': 'precise-proposed/icehouse', - 'precise-icehouse/proposed': 'precise-proposed/icehouse', - 'precise-proposed/icehouse': 'precise-proposed/icehouse', - # Juno - 'juno': 'trusty-updates/juno', - 'trusty-juno': 'trusty-updates/juno', - 'trusty-juno/updates': 'trusty-updates/juno', - 'trusty-updates/juno': 'trusty-updates/juno', - 'juno/proposed': 'trusty-proposed/juno', - 'trusty-juno/proposed': 'trusty-proposed/juno', - 'trusty-proposed/juno': 'trusty-proposed/juno', - # Kilo - 'kilo': 'trusty-updates/kilo', - 'trusty-kilo': 'trusty-updates/kilo', - 'trusty-kilo/updates': 'trusty-updates/kilo', - 'trusty-updates/kilo': 'trusty-updates/kilo', - 'kilo/proposed': 'trusty-proposed/kilo', - 'trusty-kilo/proposed': 'trusty-proposed/kilo', - 'trusty-proposed/kilo': 'trusty-proposed/kilo', - # Liberty - 'liberty': 'trusty-updates/liberty', - 'trusty-liberty': 'trusty-updates/liberty', - 'trusty-liberty/updates': 'trusty-updates/liberty', - 'trusty-updates/liberty': 'trusty-updates/liberty', - 'liberty/proposed': 'trusty-proposed/liberty', - 'trusty-liberty/proposed': 'trusty-proposed/liberty', - 'trusty-proposed/liberty': 'trusty-proposed/liberty', - # Mitaka - 'mitaka': 'trusty-updates/mitaka', - 'trusty-mitaka': 'trusty-updates/mitaka', - 'trusty-mitaka/updates': 'trusty-updates/mitaka', - 'trusty-updates/mitaka': 'trusty-updates/mitaka', - 'mitaka/proposed': 'trusty-proposed/mitaka', - 'trusty-mitaka/proposed': 'trusty-proposed/mitaka', - 'trusty-proposed/mitaka': 'trusty-proposed/mitaka', -} - -# The order of this list is very important. Handlers should be listed in from -# least- to most-specific URL matching. -FETCH_HANDLERS = ( - 'charmhelpers.fetch.archiveurl.ArchiveUrlFetchHandler', - 'charmhelpers.fetch.bzrurl.BzrUrlFetchHandler', - 'charmhelpers.fetch.giturl.GitUrlFetchHandler', -) - -APT_NO_LOCK = 100 # The return code for "couldn't acquire lock" in APT. -APT_NO_LOCK_RETRY_DELAY = 10 # Wait 10 seconds between apt lock checks. -APT_NO_LOCK_RETRY_COUNT = 30 # Retry to acquire the lock X times. - - -class SourceConfigError(Exception): - pass - - -class UnhandledSource(Exception): - pass - - -class AptLockError(Exception): - pass - - -class BaseFetchHandler(object): - - """Base class for FetchHandler implementations in fetch plugins""" - - def can_handle(self, source): - """Returns True if the source can be handled. Otherwise returns - a string explaining why it cannot""" - return "Wrong source type" - - def install(self, source): - """Try to download and unpack the source. Return the path to the - unpacked files or raise UnhandledSource.""" - raise UnhandledSource("Wrong source type {}".format(source)) - - def parse_url(self, url): - return urlparse(url) - - def base_url(self, url): - """Return url without querystring or fragment""" - parts = list(self.parse_url(url)) - parts[4:] = ['' for i in parts[4:]] - return urlunparse(parts) - - -def filter_installed_packages(packages): - """Returns a list of packages that require installation""" - cache = apt_cache() - _pkgs = [] - for package in packages: - try: - p = cache[package] - p.current_ver or _pkgs.append(package) - except KeyError: - log('Package {} has no installation candidate.'.format(package), - level='WARNING') - _pkgs.append(package) - return _pkgs - - -def apt_cache(in_memory=True): - """Build and return an apt cache""" - from apt import apt_pkg - apt_pkg.init() - if in_memory: - apt_pkg.config.set("Dir::Cache::pkgcache", "") - apt_pkg.config.set("Dir::Cache::srcpkgcache", "") - return apt_pkg.Cache() - - -def apt_install(packages, options=None, fatal=False): - """Install one or more packages""" - if options is None: - options = ['--option=Dpkg::Options::=--force-confold'] - - cmd = ['apt-get', '--assume-yes'] - cmd.extend(options) - cmd.append('install') - if isinstance(packages, six.string_types): - cmd.append(packages) - else: - cmd.extend(packages) - log("Installing {} with options: {}".format(packages, - options)) - _run_apt_command(cmd, fatal) - - -def apt_upgrade(options=None, fatal=False, dist=False): - """Upgrade all packages""" - if options is None: - options = ['--option=Dpkg::Options::=--force-confold'] - - cmd = ['apt-get', '--assume-yes'] - cmd.extend(options) - if dist: - cmd.append('dist-upgrade') - else: - cmd.append('upgrade') - log("Upgrading with options: {}".format(options)) - _run_apt_command(cmd, fatal) - - -def apt_update(fatal=False): - """Update local apt cache""" - cmd = ['apt-get', 'update'] - _run_apt_command(cmd, fatal) - - -def apt_purge(packages, fatal=False): - """Purge one or more packages""" - cmd = ['apt-get', '--assume-yes', 'purge'] - if isinstance(packages, six.string_types): - cmd.append(packages) - else: - cmd.extend(packages) - log("Purging {}".format(packages)) - _run_apt_command(cmd, fatal) - - -def apt_mark(packages, mark, fatal=False): - """Flag one or more packages using apt-mark""" - log("Marking {} as {}".format(packages, mark)) - cmd = ['apt-mark', mark] - if isinstance(packages, six.string_types): - cmd.append(packages) - else: - cmd.extend(packages) - - if fatal: - subprocess.check_call(cmd, universal_newlines=True) - else: - subprocess.call(cmd, universal_newlines=True) - - -def apt_hold(packages, fatal=False): - return apt_mark(packages, 'hold', fatal=fatal) - - -def apt_unhold(packages, fatal=False): - return apt_mark(packages, 'unhold', fatal=fatal) - - -def add_source(source, key=None): - """Add a package source to this system. - - @param source: a URL or sources.list entry, as supported by - add-apt-repository(1). Examples:: - - ppa:charmers/example - deb https://stub:key@private.example.com/ubuntu trusty main - - In addition: - 'proposed:' may be used to enable the standard 'proposed' - pocket for the release. - 'cloud:' may be used to activate official cloud archive pockets, - such as 'cloud:icehouse' - 'distro' may be used as a noop - - @param key: A key to be added to the system's APT keyring and used - to verify the signatures on packages. Ideally, this should be an - ASCII format GPG public key including the block headers. A GPG key - id may also be used, but be aware that only insecure protocols are - available to retrieve the actual public key from a public keyserver - placing your Juju environment at risk. ppa and cloud archive keys - are securely added automtically, so sould not be provided. - """ - if source is None: - log('Source is not present. Skipping') - return - - if (source.startswith('ppa:') or - source.startswith('http') or - source.startswith('deb ') or - source.startswith('cloud-archive:')): - subprocess.check_call(['add-apt-repository', '--yes', source]) - elif source.startswith('cloud:'): - apt_install(filter_installed_packages(['ubuntu-cloud-keyring']), - fatal=True) - pocket = source.split(':')[-1] - if pocket not in CLOUD_ARCHIVE_POCKETS: - raise SourceConfigError( - 'Unsupported cloud: source option %s' % - pocket) - actual_pocket = CLOUD_ARCHIVE_POCKETS[pocket] - with open('/etc/apt/sources.list.d/cloud-archive.list', 'w') as apt: - apt.write(CLOUD_ARCHIVE.format(actual_pocket)) - elif source == 'proposed': - release = lsb_release()['DISTRIB_CODENAME'] - with open('/etc/apt/sources.list.d/proposed.list', 'w') as apt: - apt.write(PROPOSED_POCKET.format(release)) - elif source == 'distro': - pass - else: - log("Unknown source: {!r}".format(source)) - - if key: - if '-----BEGIN PGP PUBLIC KEY BLOCK-----' in key: - with NamedTemporaryFile('w+') as key_file: - key_file.write(key) - key_file.flush() - key_file.seek(0) - subprocess.check_call(['apt-key', 'add', '-'], stdin=key_file) - else: - # Note that hkp: is in no way a secure protocol. Using a - # GPG key id is pointless from a security POV unless you - # absolutely trust your network and DNS. - subprocess.check_call(['apt-key', 'adv', '--keyserver', - 'hkp://keyserver.ubuntu.com:80', '--recv', - key]) - - -def configure_sources(update=False, - sources_var='install_sources', - keys_var='install_keys'): - """ - Configure multiple sources from charm configuration. - - The lists are encoded as yaml fragments in the configuration. - The frament needs to be included as a string. Sources and their - corresponding keys are of the types supported by add_source(). - - Example config: - install_sources: | - - "ppa:foo" - - "http://example.com/repo precise main" - install_keys: | - - null - - "a1b2c3d4" - - Note that 'null' (a.k.a. None) should not be quoted. - """ - sources = safe_load((config(sources_var) or '').strip()) or [] - keys = safe_load((config(keys_var) or '').strip()) or None - - if isinstance(sources, six.string_types): - sources = [sources] - - if keys is None: - for source in sources: - add_source(source, None) - else: - if isinstance(keys, six.string_types): - keys = [keys] - - if len(sources) != len(keys): - raise SourceConfigError( - 'Install sources and keys lists are different lengths') - for source, key in zip(sources, keys): - add_source(source, key) - if update: - apt_update(fatal=True) - - -def install_remote(source, *args, **kwargs): - """ - Install a file tree from a remote source - - The specified source should be a url of the form: - scheme://[host]/path[#[option=value][&...]] - - Schemes supported are based on this modules submodules. - Options supported are submodule-specific. - Additional arguments are passed through to the submodule. - - For example:: - - dest = install_remote('http://example.com/archive.tgz', - checksum='deadbeef', - hash_type='sha1') - - This will download `archive.tgz`, validate it using SHA1 and, if - the file is ok, extract it and return the directory in which it - was extracted. If the checksum fails, it will raise - :class:`charmhelpers.core.host.ChecksumError`. - """ - # We ONLY check for True here because can_handle may return a string - # explaining why it can't handle a given source. - handlers = [h for h in plugins() if h.can_handle(source) is True] - installed_to = None - for handler in handlers: - try: - installed_to = handler.install(source, *args, **kwargs) - except UnhandledSource as e: - log('Install source attempt unsuccessful: {}'.format(e), - level='WARNING') - if not installed_to: - raise UnhandledSource("No handler found for source {}".format(source)) - return installed_to - - -def install_from_config(config_var_name): - charm_config = config() - source = charm_config[config_var_name] - return install_remote(source) - - -def plugins(fetch_handlers=None): - if not fetch_handlers: - fetch_handlers = FETCH_HANDLERS - plugin_list = [] - for handler_name in fetch_handlers: - package, classname = handler_name.rsplit('.', 1) - try: - handler_class = getattr( - importlib.import_module(package), - classname) - plugin_list.append(handler_class()) - except NotImplementedError: - # Skip missing plugins so that they can be ommitted from - # installation if desired - log("FetchHandler {} not found, skipping plugin".format( - handler_name)) - return plugin_list - - -def _run_apt_command(cmd, fatal=False): - """ - Run an APT command, checking output and retrying if the fatal flag is set - to True. - - :param: cmd: str: The apt command to run. - :param: fatal: bool: Whether the command's output should be checked and - retried. - """ - env = os.environ.copy() - - if 'DEBIAN_FRONTEND' not in env: - env['DEBIAN_FRONTEND'] = 'noninteractive' - - if fatal: - retry_count = 0 - result = None - - # If the command is considered "fatal", we need to retry if the apt - # lock was not acquired. - - while result is None or result == APT_NO_LOCK: - try: - result = subprocess.check_call(cmd, env=env) - except subprocess.CalledProcessError as e: - retry_count = retry_count + 1 - if retry_count > APT_NO_LOCK_RETRY_COUNT: - raise - result = e.returncode - log("Couldn't acquire DPKG lock. Will retry in {} seconds." - "".format(APT_NO_LOCK_RETRY_DELAY)) - time.sleep(APT_NO_LOCK_RETRY_DELAY) - - else: - subprocess.call(cmd, env=env) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/fetch/archiveurl.py b/charms/trusty/cassandra/hooks/charmhelpers/fetch/archiveurl.py deleted file mode 100644 index b8e0943..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/fetch/archiveurl.py +++ /dev/null @@ -1,167 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -import os -import hashlib -import re - -from charmhelpers.fetch import ( - BaseFetchHandler, - UnhandledSource -) -from charmhelpers.payload.archive import ( - get_archive_handler, - extract, -) -from charmhelpers.core.host import mkdir, check_hash - -import six -if six.PY3: - from urllib.request import ( - build_opener, install_opener, urlopen, urlretrieve, - HTTPPasswordMgrWithDefaultRealm, HTTPBasicAuthHandler, - ) - from urllib.parse import urlparse, urlunparse, parse_qs - from urllib.error import URLError -else: - from urllib import urlretrieve - from urllib2 import ( - build_opener, install_opener, urlopen, - HTTPPasswordMgrWithDefaultRealm, HTTPBasicAuthHandler, - URLError - ) - from urlparse import urlparse, urlunparse, parse_qs - - -def splituser(host): - '''urllib.splituser(), but six's support of this seems broken''' - _userprog = re.compile('^(.*)@(.*)$') - match = _userprog.match(host) - if match: - return match.group(1, 2) - return None, host - - -def splitpasswd(user): - '''urllib.splitpasswd(), but six's support of this is missing''' - _passwdprog = re.compile('^([^:]*):(.*)$', re.S) - match = _passwdprog.match(user) - if match: - return match.group(1, 2) - return user, None - - -class ArchiveUrlFetchHandler(BaseFetchHandler): - """ - Handler to download archive files from arbitrary URLs. - - Can fetch from http, https, ftp, and file URLs. - - Can install either tarballs (.tar, .tgz, .tbz2, etc) or zip files. - - Installs the contents of the archive in $CHARM_DIR/fetched/. - """ - def can_handle(self, source): - url_parts = self.parse_url(source) - if url_parts.scheme not in ('http', 'https', 'ftp', 'file'): - # XXX: Why is this returning a boolean and a string? It's - # doomed to fail since "bool(can_handle('foo://'))" will be True. - return "Wrong source type" - if get_archive_handler(self.base_url(source)): - return True - return False - - def download(self, source, dest): - """ - Download an archive file. - - :param str source: URL pointing to an archive file. - :param str dest: Local path location to download archive file to. - """ - # propogate all exceptions - # URLError, OSError, etc - proto, netloc, path, params, query, fragment = urlparse(source) - if proto in ('http', 'https'): - auth, barehost = splituser(netloc) - if auth is not None: - source = urlunparse((proto, barehost, path, params, query, fragment)) - username, password = splitpasswd(auth) - passman = HTTPPasswordMgrWithDefaultRealm() - # Realm is set to None in add_password to force the username and password - # to be used whatever the realm - passman.add_password(None, source, username, password) - authhandler = HTTPBasicAuthHandler(passman) - opener = build_opener(authhandler) - install_opener(opener) - response = urlopen(source) - try: - with open(dest, 'wb') as dest_file: - dest_file.write(response.read()) - except Exception as e: - if os.path.isfile(dest): - os.unlink(dest) - raise e - - # Mandatory file validation via Sha1 or MD5 hashing. - def download_and_validate(self, url, hashsum, validate="sha1"): - tempfile, headers = urlretrieve(url) - check_hash(tempfile, hashsum, validate) - return tempfile - - def install(self, source, dest=None, checksum=None, hash_type='sha1'): - """ - Download and install an archive file, with optional checksum validation. - - The checksum can also be given on the `source` URL's fragment. - For example:: - - handler.install('http://example.com/file.tgz#sha1=deadbeef') - - :param str source: URL pointing to an archive file. - :param str dest: Local destination path to install to. If not given, - installs to `$CHARM_DIR/archives/archive_file_name`. - :param str checksum: If given, validate the archive file after download. - :param str hash_type: Algorithm used to generate `checksum`. - Can be any hash alrgorithm supported by :mod:`hashlib`, - such as md5, sha1, sha256, sha512, etc. - - """ - url_parts = self.parse_url(source) - dest_dir = os.path.join(os.environ.get('CHARM_DIR'), 'fetched') - if not os.path.exists(dest_dir): - mkdir(dest_dir, perms=0o755) - dld_file = os.path.join(dest_dir, os.path.basename(url_parts.path)) - try: - self.download(source, dld_file) - except URLError as e: - raise UnhandledSource(e.reason) - except OSError as e: - raise UnhandledSource(e.strerror) - options = parse_qs(url_parts.fragment) - for key, value in options.items(): - if not six.PY3: - algorithms = hashlib.algorithms - else: - algorithms = hashlib.algorithms_available - if key in algorithms: - if len(value) != 1: - raise TypeError( - "Expected 1 hash value, not %d" % len(value)) - expected = value[0] - check_hash(dld_file, expected, key) - if checksum: - check_hash(dld_file, checksum, hash_type) - return extract(dld_file, dest) diff --git a/charms/trusty/cassandra/hooks/charmhelpers/fetch/bzrurl.py b/charms/trusty/cassandra/hooks/charmhelpers/fetch/bzrurl.py deleted file mode 100644 index cafd27f..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/fetch/bzrurl.py +++ /dev/null @@ -1,68 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -import os -from subprocess import check_call -from charmhelpers.fetch import ( - BaseFetchHandler, - UnhandledSource, - filter_installed_packages, - apt_install, -) -from charmhelpers.core.host import mkdir - - -if filter_installed_packages(['bzr']) != []: - apt_install(['bzr']) - if filter_installed_packages(['bzr']) != []: - raise NotImplementedError('Unable to install bzr') - - -class BzrUrlFetchHandler(BaseFetchHandler): - """Handler for bazaar branches via generic and lp URLs""" - def can_handle(self, source): - url_parts = self.parse_url(source) - if url_parts.scheme not in ('bzr+ssh', 'lp', ''): - return False - elif not url_parts.scheme: - return os.path.exists(os.path.join(source, '.bzr')) - else: - return True - - def branch(self, source, dest): - if not self.can_handle(source): - raise UnhandledSource("Cannot handle {}".format(source)) - if os.path.exists(dest): - check_call(['bzr', 'pull', '--overwrite', '-d', dest, source]) - else: - check_call(['bzr', 'branch', source, dest]) - - def install(self, source, dest=None): - url_parts = self.parse_url(source) - branch_name = url_parts.path.strip("/").split("/")[-1] - if dest: - dest_dir = os.path.join(dest, branch_name) - else: - dest_dir = os.path.join(os.environ.get('CHARM_DIR'), "fetched", - branch_name) - - if not os.path.exists(dest_dir): - mkdir(dest_dir, perms=0o755) - try: - self.branch(source, dest_dir) - except OSError as e: - raise UnhandledSource(e.strerror) - return dest_dir diff --git a/charms/trusty/cassandra/hooks/charmhelpers/fetch/giturl.py b/charms/trusty/cassandra/hooks/charmhelpers/fetch/giturl.py deleted file mode 100644 index 65ed531..0000000 --- a/charms/trusty/cassandra/hooks/charmhelpers/fetch/giturl.py +++ /dev/null @@ -1,70 +0,0 @@ -# Copyright 2014-2015 Canonical Limited. -# -# This file is part of charm-helpers. -# -# charm-helpers is free software: you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License version 3 as -# published by the Free Software Foundation. -# -# charm-helpers is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>. - -import os -from subprocess import check_call, CalledProcessError -from charmhelpers.fetch import ( - BaseFetchHandler, - UnhandledSource, - filter_installed_packages, - apt_install, -) - -if filter_installed_packages(['git']) != []: - apt_install(['git']) - if filter_installed_packages(['git']) != []: - raise NotImplementedError('Unable to install git') - - -class GitUrlFetchHandler(BaseFetchHandler): - """Handler for git branches via generic and github URLs""" - def can_handle(self, source): - url_parts = self.parse_url(source) - # TODO (mattyw) no support for ssh git@ yet - if url_parts.scheme not in ('http', 'https', 'git', ''): - return False - elif not url_parts.scheme: - return os.path.exists(os.path.join(source, '.git')) - else: - return True - - def clone(self, source, dest, branch="master", depth=None): - if not self.can_handle(source): - raise UnhandledSource("Cannot handle {}".format(source)) - - if os.path.exists(dest): - cmd = ['git', '-C', dest, 'pull', source, branch] - else: - cmd = ['git', 'clone', source, dest, '--branch', branch] - if depth: - cmd.extend(['--depth', depth]) - check_call(cmd) - - def install(self, source, branch="master", dest=None, depth=None): - url_parts = self.parse_url(source) - branch_name = url_parts.path.strip("/").split("/")[-1] - if dest: - dest_dir = os.path.join(dest, branch_name) - else: - dest_dir = os.path.join(os.environ.get('CHARM_DIR'), "fetched", - branch_name) - try: - self.clone(source, dest_dir, branch, depth) - except CalledProcessError as e: - raise UnhandledSource(e) - except OSError as e: - raise UnhandledSource(e.strerror) - return dest_dir diff --git a/charms/trusty/cassandra/hooks/cluster-relation-changed b/charms/trusty/cassandra/hooks/cluster-relation-changed deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/cluster-relation-changed +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/hooks/cluster-relation-departed b/charms/trusty/cassandra/hooks/cluster-relation-departed deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/cluster-relation-departed +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/hooks/config-changed b/charms/trusty/cassandra/hooks/config-changed deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/config-changed +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/hooks/coordinator.py b/charms/trusty/cassandra/hooks/coordinator.py deleted file mode 100644 index c353671..0000000 --- a/charms/trusty/cassandra/hooks/coordinator.py +++ /dev/null @@ -1,35 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -from charmhelpers.coordinator import BaseCoordinator - - -class CassandraCoordinator(BaseCoordinator): - def default_grant(self, lock, unit, granted, queue): - '''Grant locks to only one unit at a time, regardless of its name. - - This lets us keep separate locks like repair and restart, - while ensuring the operations do not occur on different nodes - at the same time. - ''' - # Return True if this unit has already been granted a lock. - if self.grants.get(unit): - return True - - # Otherwise, return True if the unit is first in the queue. - return queue[0] == unit and not granted - - -coordinator = CassandraCoordinator() diff --git a/charms/trusty/cassandra/hooks/data-relation-changed b/charms/trusty/cassandra/hooks/data-relation-changed deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/data-relation-changed +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/hooks/data-relation-departed b/charms/trusty/cassandra/hooks/data-relation-departed deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/data-relation-departed +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/hooks/database-admin-relation-changed b/charms/trusty/cassandra/hooks/database-admin-relation-changed deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/database-admin-relation-changed +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/hooks/database-relation-changed b/charms/trusty/cassandra/hooks/database-relation-changed deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/database-relation-changed +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/hooks/definitions.py b/charms/trusty/cassandra/hooks/definitions.py deleted file mode 100644 index 24f9497..0000000 --- a/charms/trusty/cassandra/hooks/definitions.py +++ /dev/null @@ -1,127 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -from charmhelpers.core import hookenv -from charmhelpers.core import services - -import actions -import helpers -import relations - - -def get_service_definitions(): - # This looks like it could be a module level global list, but - # unfortunately that makes the module unimportable outside of a - # hook context. The main culprit is RelationContext, which invokes - # relation-get from its constructor. By wrapping the service - # definition list in this function, we can defer constructing it - # until we have constructed enough of a mock context and perform - # basic tests. - config = hookenv.config() - - return [ - # Prepare for the Cassandra service. - dict(service='install', - data_ready=[actions.set_proxy, - actions.preinstall, - actions.emit_meminfo, - actions.revert_unchangeable_config, - actions.store_unit_private_ip, - actions.add_implicit_package_signing_keys, - actions.configure_sources, - actions.swapoff, - actions.reset_sysctl, - actions.reset_limits, - actions.install_oracle_jre, - actions.install_cassandra_packages, - actions.emit_java_version, - actions.ensure_cassandra_package_status], - start=[], stop=[]), - - # Get Cassandra running. - dict(service=helpers.get_cassandra_service(), - - # Open access to client and replication ports. Client - # protocols require password authentication. Access to - # the unauthenticated replication ports is protected via - # ufw firewall rules. We do not open the JMX port, although - # we could since it is similarly protected by ufw. - ports=[config['rpc_port'], # Thrift clients - config['native_transport_port'], # Native clients. - config['storage_port'], # Plaintext replication - config['ssl_storage_port']], # Encrypted replication. - - required_data=[relations.StorageRelation(), - relations.PeerRelation()], - provided_data=[relations.StorageRelation()], - data_ready=[actions.configure_firewall, - actions.update_etc_hosts, - actions.maintain_seeds, - actions.configure_cassandra_yaml, - actions.configure_cassandra_env, - actions.configure_cassandra_rackdc, - actions.reset_all_io_schedulers, - actions.maybe_restart, - actions.request_unit_superuser, - actions.reset_default_password], - start=[services.open_ports], - stop=[actions.stop_cassandra, services.close_ports]), - - # Actions that must be done while Cassandra is running. - dict(service='post', - required_data=[RequiresLiveNode()], - data_ready=[actions.post_bootstrap, - actions.create_unit_superusers, - actions.reset_auth_keyspace_replication, - actions.publish_database_relations, - actions.publish_database_admin_relations, - actions.install_maintenance_crontab, - actions.nrpe_external_master_relation, - actions.emit_cluster_info, - actions.set_active], - start=[], stop=[])] - - -class RequiresLiveNode: - def __bool__(self): - is_live = self.is_live() - hookenv.log('Requirement RequiresLiveNode: {}'.format(is_live), - hookenv.DEBUG) - return is_live - - def is_live(self): - if helpers.is_decommissioned(): - hookenv.log('Node is decommissioned') - return False - - if helpers.is_cassandra_running(): - hookenv.log('Cassandra is running') - auth = hookenv.config()['authenticator'] - if auth == 'AllowAllAuthenticator': - return True - elif hookenv.local_unit() in helpers.get_unit_superusers(): - hookenv.log('Credentials created') - return True - else: - hookenv.log('Credentials have not been created') - return False - else: - hookenv.log('Cassandra is not running') - return False - - -def get_service_manager(): - return services.ServiceManager(get_service_definitions()) diff --git a/charms/trusty/cassandra/hooks/helpers.py b/charms/trusty/cassandra/hooks/helpers.py deleted file mode 100644 index b86a6b1..0000000 --- a/charms/trusty/cassandra/hooks/helpers.py +++ /dev/null @@ -1,1084 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import configparser -from contextlib import contextmanager -from datetime import timedelta -from distutils.version import LooseVersion -import errno -from functools import wraps -import io -import json -import os.path -import re -import shutil -import subprocess -import sys -import tempfile -from textwrap import dedent -import time - -import bcrypt -from cassandra import ConsistencyLevel -import cassandra.auth -import cassandra.cluster -import cassandra.query -import yaml - -from charmhelpers.core import hookenv, host -from charmhelpers.core.hookenv import DEBUG, ERROR, WARNING -from charmhelpers import fetch - -from coordinator import coordinator - - -RESTART_TIMEOUT = 600 - - -def logged(func): - @wraps(func) - def wrapper(*args, **kw): - hookenv.log("* Helper {}/{}".format(hookenv.hook_name(), - func.__name__)) - return func(*args, **kw) - return wrapper - - -def backoff(what_for, max_pause=60): - i = 0 - while True: - yield True - i += 1 - pause = min(max_pause, 2 ** i) - time.sleep(pause) - if pause > 10: - hookenv.log('Recheck {} for {}'.format(i, what_for)) - - -# FOR CHARMHELPERS -@contextmanager -def autostart_disabled(services=None, _policy_rc='/usr/sbin/policy-rc.d'): - '''Tell well behaved Debian packages to not start services when installed. - ''' - script = ['#!/bin/sh'] - if services is not None: - for service in services: - script.append( - 'if [ "$1" = "{}" ]; then exit 101; fi'.format(service)) - script.append('exit 0') - else: - script.append('exit 101') # By default, all daemons disabled. - try: - if os.path.exists(_policy_rc): - shutil.move(_policy_rc, "{}-orig".format(_policy_rc)) - host.write_file(_policy_rc, '\n'.join(script).encode('ASCII'), - perms=0o555) - yield - finally: - os.unlink(_policy_rc) - if os.path.exists("{}-orig".format(_policy_rc)): - shutil.move("{}-orig".format(_policy_rc), _policy_rc) - - -# FOR CHARMHELPERS -@logged -def install_packages(packages): - packages = list(packages) - if hookenv.config('extra_packages'): - packages.extend(hookenv.config('extra_packages').split()) - packages = fetch.filter_installed_packages(packages) - if packages: - # The DSE packages are huge, so this might take some time. - status_set('maintenance', 'Installing packages') - with autostart_disabled(['cassandra']): - fetch.apt_install(packages, fatal=True) - - -# FOR CHARMHELPERS -@logged -def ensure_package_status(packages): - config_dict = hookenv.config() - - package_status = config_dict['package_status'] - - if package_status not in ['install', 'hold']: - raise RuntimeError("package_status must be 'install' or 'hold', " - "not {!r}".format(package_status)) - - selections = [] - for package in packages: - selections.append('{} {}\n'.format(package, package_status)) - dpkg = subprocess.Popen(['dpkg', '--set-selections'], - stdin=subprocess.PIPE) - dpkg.communicate(input=''.join(selections).encode('US-ASCII')) - - -def get_seed_ips(): - '''Return the set of seed ip addresses. - - We use ip addresses rather than unit names, as we may need to use - external seed ips at some point. - ''' - return set((hookenv.leader_get('seeds') or '').split(',')) - - -def actual_seed_ips(): - '''Return the seeds currently in cassandra.yaml''' - cassandra_yaml = read_cassandra_yaml() - s = cassandra_yaml['seed_provider'][0]['parameters'][0]['seeds'] - return set(s.split(',')) - - -def get_database_directory(config_path): - '''Convert a database path from the service config to an absolute path. - - Entries in the config file may be absolute, relative to - /var/lib/cassandra, or relative to the mountpoint. - ''' - import relations - storage = relations.StorageRelation() - if storage.mountpoint: - root = os.path.join(storage.mountpoint, 'cassandra') - else: - root = '/var/lib/cassandra' - return os.path.join(root, config_path) - - -def ensure_database_directory(config_path): - '''Create the database directory if it doesn't exist, resetting - ownership and other settings while we are at it. - - Returns the absolute path. - ''' - absdir = get_database_directory(config_path) - - # Work around Bug #1427150 by ensuring components of the path are - # created with the required permissions, if necessary. - component = os.sep - for p in absdir.split(os.sep)[1:-1]: - component = os.path.join(component, p) - if not os.path.exists(p): - host.mkdir(component) - assert component == os.path.split(absdir)[0] - host.mkdir(absdir, owner='cassandra', group='cassandra', perms=0o750) - return absdir - - -def get_all_database_directories(): - config = hookenv.config() - dirs = dict( - data_file_directories=[get_database_directory(d) - for d in (config['data_file_directories'] or - 'data').split()], - commitlog_directory=get_database_directory( - config['commitlog_directory'] or 'commitlog'), - saved_caches_directory=get_database_directory( - config['saved_caches_directory'] or 'saved_caches')) - if has_cassandra_version('3.0'): - # Not yet configurable. Make configurable with Juju native storage. - dirs['hints_directory'] = get_database_directory('hints') - return dirs - - -def mountpoint(path): - '''Return the mountpoint that path exists on.''' - path = os.path.realpath(path) - while path != '/' and not os.path.ismount(path): - path = os.path.dirname(path) - return path - - -# FOR CHARMHELPERS -def is_lxc(): - '''Return True if we are running inside an LXC container.''' - with open('/proc/1/cgroup', 'r') as f: - return ':/lxc/' in f.readline() - - -# FOR CHARMHELPERS -def set_io_scheduler(io_scheduler, directory): - '''Set the block device io scheduler.''' - - assert os.path.isdir(directory) - - # The block device regex may be a tad simplistic. - block_regex = re.compile('\/dev\/([a-z]*)', re.IGNORECASE) - - output = subprocess.check_output(['df', directory], - universal_newlines=True) - - if not is_lxc(): - hookenv.log("Setting block device of {} to IO scheduler {}" - "".format(directory, io_scheduler)) - try: - block_dev = re.findall(block_regex, output)[0] - except IndexError: - hookenv.log("Unable to locate block device of {} (in container?)" - "".format(directory)) - return - sys_file = os.path.join("/", "sys", "block", block_dev, - "queue", "scheduler") - try: - host.write_file(sys_file, io_scheduler.encode('ascii'), - perms=0o644) - except OSError as e: - if e.errno == errno.EACCES: - hookenv.log("Got Permission Denied trying to set the " - "IO scheduler at {}. We may be in an LXC. " - "Exiting gracefully".format(sys_file), - WARNING) - elif e.errno == errno.ENOENT: - hookenv.log("Got no such file or directory trying to " - "set the IO scheduler at {}. It may be " - "this is an LXC, the device name is as " - "yet unknown to the charm, or LVM/RAID is " - "hiding the underlying device name. " - "Exiting gracefully".format(sys_file), - WARNING) - else: - raise e - else: - # Make no change if we are in an LXC - hookenv.log("In an LXC. Cannot set io scheduler {}" - "".format(io_scheduler)) - - -# FOR CHARMHELPERS -def recursive_chown(directory, owner="root", group="root"): - '''Change ownership of all files and directories in 'directory'. - - Ownership of 'directory' is also reset. - ''' - shutil.chown(directory, owner, group) - for root, dirs, files in os.walk(directory): - for dirname in dirs: - shutil.chown(os.path.join(root, dirname), owner, group) - for filename in files: - shutil.chown(os.path.join(root, filename), owner, group) - - -def maybe_backup(path): - '''Copy a file to file.orig, if file.orig does not already exist.''' - backup_path = path + '.orig' - if not os.path.exists(backup_path): - with open(path, 'rb') as f: - host.write_file(backup_path, f.read(), perms=0o600) - - -# FOR CHARMHELPERS -def get_package_version(package): - cache = fetch.apt_cache() - if package not in cache: - return None - pkgver = cache[package].current_ver - if pkgver is not None: - return pkgver.ver_str - return None - - -def get_jre(): - # DataStax Enterprise requires the Oracle JRE. - if get_cassandra_edition() == 'dse': - return 'oracle' - - config = hookenv.config() - jre = config['jre'].lower() - if jre not in ('openjdk', 'oracle'): - hookenv.log('Unknown JRE {!r} specified. Using OpenJDK'.format(jre), - ERROR) - jre = 'openjdk' - return jre - - -def get_cassandra_edition(): - config = hookenv.config() - edition = config['edition'].lower() - if edition not in ('community', 'dse'): - hookenv.log('Unknown edition {!r}. Using community.'.format(edition), - ERROR) - edition = 'community' - return edition - - -def get_cassandra_service(): - '''Cassandra upstart service''' - if get_cassandra_edition() == 'dse': - return 'dse' - return 'cassandra' - - -def get_cassandra_version(): - if get_cassandra_edition() == 'dse': - dse_ver = get_package_version('dse-full') - if not dse_ver: - return None - elif LooseVersion(dse_ver) >= LooseVersion('5.0'): - return '3.0' - elif LooseVersion(dse_ver) >= LooseVersion('4.7'): - return '2.1' - else: - return '2.0' - return get_package_version('cassandra') - - -def has_cassandra_version(minimum_ver): - cassandra_version = get_cassandra_version() - assert cassandra_version is not None, 'Cassandra package not yet installed' - return LooseVersion(cassandra_version) >= LooseVersion(minimum_ver) - - -def get_cassandra_config_dir(): - if get_cassandra_edition() == 'dse': - return '/etc/dse/cassandra' - else: - return '/etc/cassandra' - - -def get_cassandra_yaml_file(): - return os.path.join(get_cassandra_config_dir(), "cassandra.yaml") - - -def get_cassandra_env_file(): - return os.path.join(get_cassandra_config_dir(), "cassandra-env.sh") - - -def get_cassandra_rackdc_file(): - return os.path.join(get_cassandra_config_dir(), - "cassandra-rackdc.properties") - - -def get_cassandra_pid_file(): - edition = get_cassandra_edition() - if edition == 'dse': - pid_file = "/var/run/dse/dse.pid" - else: - pid_file = "/var/run/cassandra/cassandra.pid" - return pid_file - - -def get_cassandra_packages(): - edition = get_cassandra_edition() - if edition == 'dse': - packages = set(['dse-full']) - else: - packages = set(['cassandra']) # 'cassandra-tools' - - packages.add('ntp') - packages.add('run-one') - packages.add('netcat') - - jre = get_jre() - if jre == 'oracle': - # We can't use a packaged version of the Oracle JRE, as we - # are not allowed to bypass Oracle's click through license - # agreement. - pass - else: - # NB. OpenJDK 8 not available in trusty. This needs to come - # from a PPA or some other configured source. - packages.add('openjdk-8-jre-headless') - - return packages - - -@logged -def stop_cassandra(): - if is_cassandra_running(): - hookenv.log('Shutting down Cassandra') - host.service_stop(get_cassandra_service()) - if is_cassandra_running(): - hookenv.status_set('blocked', 'Cassandra failed to shut down') - raise SystemExit(0) - - -@logged -def start_cassandra(): - if is_cassandra_running(): - return - - actual_seeds = sorted(actual_seed_ips()) - assert actual_seeds, 'Attempting to start cassandra with empty seed list' - hookenv.config()['configured_seeds'] = actual_seeds - - if is_bootstrapped(): - status_set('maintenance', - 'Starting Cassandra with seeds {!r}' - .format(','.join(actual_seeds))) - else: - status_set('maintenance', - 'Bootstrapping with seeds {}' - .format(','.join(actual_seeds))) - - host.service_start(get_cassandra_service()) - - # Wait for Cassandra to actually start, or abort. - timeout = time.time() + RESTART_TIMEOUT - while time.time() < timeout: - if is_cassandra_running(): - return - time.sleep(1) - status_set('blocked', 'Cassandra failed to start') - raise SystemExit(0) - - -@logged -def reconfigure_and_restart_cassandra(overrides={}): - stop_cassandra() - configure_cassandra_yaml(overrides) - start_cassandra() - - -@logged -def remount_cassandra(): - '''If a new mountpoint is ready, migrate data across to it.''' - assert not is_cassandra_running() # Guard against data loss. - import relations - storage = relations.StorageRelation() - if storage.needs_remount(): - status_set('maintenance', 'Migrating data to new mountpoint') - hookenv.config()['bootstrapped_into_cluster'] = False - if storage.mountpoint is None: - hookenv.log('External storage AND DATA gone. ' - 'Reverting to local storage. ' - 'In danger of resurrecting old data. ', - WARNING) - else: - storage.migrate('/var/lib/cassandra', 'cassandra') - root = os.path.join(storage.mountpoint, 'cassandra') - os.chmod(root, 0o750) - - -@logged -def ensure_database_directories(): - '''Ensure that directories Cassandra expects to store its data in exist.''' - # Guard against changing perms on a running db. Although probably - # harmless, it causes shutil.chown() to fail. - assert not is_cassandra_running() - db_dirs = get_all_database_directories() - ensure_database_directory(db_dirs['commitlog_directory']) - ensure_database_directory(db_dirs['saved_caches_directory']) - if 'hints_directory' in db_dirs: - ensure_database_directory(db_dirs['hints_directory']) - for db_dir in db_dirs['data_file_directories']: - ensure_database_directory(db_dir) - - -CONNECT_TIMEOUT = 10 - - -@contextmanager -def connect(username=None, password=None, timeout=CONNECT_TIMEOUT, - auth_timeout=CONNECT_TIMEOUT): - # We pull the currently configured listen address and port from the - # yaml, rather than the service configuration, as it may have been - # overridden. - cassandra_yaml = read_cassandra_yaml() - address = cassandra_yaml['rpc_address'] - if address == '0.0.0.0': - address = 'localhost' - port = cassandra_yaml['native_transport_port'] - - if username is None or password is None: - username, password = superuser_credentials() - - auth = hookenv.config()['authenticator'] - if auth == 'AllowAllAuthenticator': - auth_provider = None - else: - auth_provider = cassandra.auth.PlainTextAuthProvider(username=username, - password=password) - - # Although we specify a reconnection_policy, it does not apply to - # the initial connection so we retry in a loop. - start = time.time() - until = start + timeout - auth_until = start + auth_timeout - while True: - cluster = cassandra.cluster.Cluster([address], port=port, - auth_provider=auth_provider) - try: - session = cluster.connect() - session.default_timeout = timeout - break - except cassandra.cluster.NoHostAvailable as x: - cluster.shutdown() - now = time.time() - # If every node failed auth, reraise one of the - # AuthenticationFailed exceptions. Unwrapping the exception - # means call sites don't have to sniff the exception bundle. - # We don't retry on auth fails; this method should not be - # called if the system_auth data is inconsistent. - auth_fails = [af for af in x.errors.values() - if isinstance(af, cassandra.AuthenticationFailed)] - if auth_fails: - if now > auth_until: - raise auth_fails[0] - if now > until: - raise - time.sleep(1) - try: - yield session - finally: - cluster.shutdown() - - -QUERY_TIMEOUT = 60 - - -def query(session, statement, consistency_level, args=None): - q = cassandra.query.SimpleStatement(statement, - consistency_level=consistency_level) - - until = time.time() + QUERY_TIMEOUT - for _ in backoff('query to execute'): - try: - return session.execute(q, args) - except Exception: - if time.time() > until: - raise - - -def encrypt_password(password): - return bcrypt.hashpw(password, bcrypt.gensalt()) - - -@logged -def ensure_user(session, username, encrypted_password, superuser=False): - '''Create the DB user if it doesn't already exist & reset the password.''' - auth = hookenv.config()['authenticator'] - if auth == 'AllowAllAuthenticator': - return # No authentication means we cannot create users - - if superuser: - hookenv.log('Creating SUPERUSER {}'.format(username)) - else: - hookenv.log('Creating user {}'.format(username)) - if has_cassandra_version('2.2'): - query(session, - 'INSERT INTO system_auth.roles ' - '(role, can_login, is_superuser, salted_hash) ' - 'VALUES (%s, TRUE, %s, %s)', - ConsistencyLevel.ALL, - (username, superuser, encrypted_password)) - else: - query(session, - 'INSERT INTO system_auth.users (name, super) VALUES (%s, %s)', - ConsistencyLevel.ALL, (username, superuser)) - query(session, - 'INSERT INTO system_auth.credentials (username, salted_hash) ' - 'VALUES (%s, %s)', - ConsistencyLevel.ALL, (username, encrypted_password)) - - -@logged -def create_unit_superuser_hard(): - '''Create or recreate the unit's superuser account. - - This method is used when there are no known superuser credentials - to use. We restart the node using the AllowAllAuthenticator and - insert our credentials directly into the system_auth keyspace. - ''' - username, password = superuser_credentials() - pwhash = encrypt_password(password) - hookenv.log('Creating unit superuser {}'.format(username)) - - # Restart cassandra without authentication & listening on localhost. - reconfigure_and_restart_cassandra( - dict(authenticator='AllowAllAuthenticator', rpc_address='localhost')) - for _ in backoff('superuser creation'): - try: - with connect() as session: - ensure_user(session, username, pwhash, superuser=True) - break - except Exception as x: - print(str(x)) - - # Restart Cassandra with regular config. - nodetool('flush') # Ensure our backdoor updates are flushed. - reconfigure_and_restart_cassandra() - - -def get_cqlshrc_path(): - return os.path.expanduser('~root/.cassandra/cqlshrc') - - -def superuser_username(): - return 'juju_{}'.format(re.subn(r'\W', '_', hookenv.local_unit())[0]) - - -def superuser_credentials(): - '''Return (username, password) to connect to the Cassandra superuser. - - The credentials are persisted in the root user's cqlshrc file, - making them easily accessible to the command line tools. - ''' - cqlshrc_path = get_cqlshrc_path() - cqlshrc = configparser.ConfigParser(interpolation=None) - cqlshrc.read([cqlshrc_path]) - - username = superuser_username() - - try: - section = cqlshrc['authentication'] - # If there happened to be an existing cqlshrc file, it might - # contain invalid credentials. Ignore them. - if section['username'] == username: - return section['username'], section['password'] - except KeyError: - hookenv.log('Generating superuser credentials into {}'.format( - cqlshrc_path)) - - config = hookenv.config() - - password = host.pwgen() - - hookenv.log('Generated username {}'.format(username)) - - # We set items separately, rather than together, so that we have a - # defined order for the ConfigParser to preserve and the tests to - # rely on. - cqlshrc.setdefault('authentication', {}) - cqlshrc['authentication']['username'] = username - cqlshrc['authentication']['password'] = password - cqlshrc.setdefault('connection', {}) - cqlshrc['connection']['hostname'] = hookenv.unit_public_ip() - if get_cassandra_version().startswith('2.0'): - cqlshrc['connection']['port'] = str(config['rpc_port']) - else: - cqlshrc['connection']['port'] = str(config['native_transport_port']) - - ini = io.StringIO() - cqlshrc.write(ini) - host.mkdir(os.path.dirname(cqlshrc_path), perms=0o700) - host.write_file(cqlshrc_path, ini.getvalue().encode('UTF-8'), perms=0o400) - - return username, password - - -def emit(*args, **kw): - # Just like print, but with plumbing and mocked out in the test suite. - print(*args, **kw) - sys.stdout.flush() - - -def nodetool(*cmd, timeout=120): - cmd = ['nodetool'] + [str(i) for i in cmd] - i = 0 - until = time.time() + timeout - for _ in backoff('nodetool to work'): - i += 1 - try: - if timeout is not None: - timeout = max(0, until - time.time()) - raw = subprocess.check_output(cmd, universal_newlines=True, - timeout=timeout, - stderr=subprocess.STDOUT) - - # Work around CASSANDRA-8776. - if 'status' in cmd and 'Error:' in raw: - hookenv.log('Error detected but nodetool returned success.', - WARNING) - raise subprocess.CalledProcessError(99, cmd, raw) - - hookenv.log('{} succeeded'.format(' '.join(cmd)), DEBUG) - out = raw.expandtabs() - emit(out) - return out - - except subprocess.CalledProcessError as x: - if i > 1: - emit(x.output.expandtabs()) # Expand tabs for juju debug-log. - if not is_cassandra_running(): - status_set('blocked', - 'Cassandra has unexpectedly shutdown') - raise SystemExit(0) - if time.time() >= until: - raise - - -def num_nodes(): - return len(get_bootstrapped_ips()) - - -def read_cassandra_yaml(): - cassandra_yaml_path = get_cassandra_yaml_file() - with open(cassandra_yaml_path, 'rb') as f: - return yaml.safe_load(f) - - -@logged -def write_cassandra_yaml(cassandra_yaml): - cassandra_yaml_path = get_cassandra_yaml_file() - host.write_file(cassandra_yaml_path, - yaml.safe_dump(cassandra_yaml).encode('UTF-8')) - - -def configure_cassandra_yaml(overrides={}, seeds=None): - cassandra_yaml_path = get_cassandra_yaml_file() - config = hookenv.config() - - maybe_backup(cassandra_yaml_path) # Its comments may be useful. - - cassandra_yaml = read_cassandra_yaml() - - # Most options just copy from config.yaml keys with the same name. - # Using the same name is preferred to match the actual Cassandra - # documentation. - simple_config_keys = ['cluster_name', 'num_tokens', - 'partitioner', 'authorizer', 'authenticator', - 'compaction_throughput_mb_per_sec', - 'stream_throughput_outbound_megabits_per_sec', - 'tombstone_warn_threshold', - 'tombstone_failure_threshold', - 'native_transport_port', 'rpc_port', - 'storage_port', 'ssl_storage_port'] - cassandra_yaml.update((k, config[k]) for k in simple_config_keys) - - seeds = ','.join(seeds or get_seed_ips()) # Don't include whitespace! - hookenv.log('Configuring seeds as {!r}'.format(seeds), DEBUG) - cassandra_yaml['seed_provider'][0]['parameters'][0]['seeds'] = seeds - - cassandra_yaml['listen_address'] = hookenv.unit_private_ip() - cassandra_yaml['rpc_address'] = '0.0.0.0' - if not get_cassandra_version().startswith('2.0'): - cassandra_yaml['broadcast_rpc_address'] = hookenv.unit_public_ip() - - dirs = get_all_database_directories() - cassandra_yaml.update(dirs) - - # GossipingPropertyFileSnitch is the only snitch recommended for - # production. It we allow others, we need to consider how to deal - # with the system_auth keyspace replication settings. - cassandra_yaml['endpoint_snitch'] = 'GossipingPropertyFileSnitch' - - # Per Bug #1523546 and CASSANDRA-9319, Thrift is disabled by default in - # Cassandra 2.2. Ensure it is enabled if rpc_port is non-zero. - if int(config['rpc_port']) > 0: - cassandra_yaml['start_rpc'] = True - - cassandra_yaml.update(overrides) - - write_cassandra_yaml(cassandra_yaml) - - -def get_pid_from_file(pid_file): - try: - with open(pid_file, 'r') as f: - pid = int(f.read().strip().split()[0]) - if pid <= 1: - raise ValueError('Illegal pid {}'.format(pid)) - return pid - except (ValueError, IndexError) as e: - hookenv.log("Invalid PID in {}.".format(pid_file)) - raise ValueError(e) - - -def is_cassandra_running(): - pid_file = get_cassandra_pid_file() - - try: - for _ in backoff('Cassandra to respond'): - # We reload the pid every time, in case it has gone away. - # If it goes away, a FileNotFound exception is raised. - pid = get_pid_from_file(pid_file) - - # This does not kill the process but checks for its - # existence. It raises an ProcessLookupError if the process - # is not running. - os.kill(pid, 0) - - if subprocess.call(["nodetool", "status"], - stdout=subprocess.DEVNULL, - stderr=subprocess.DEVNULL) == 0: - hookenv.log( - "Cassandra PID {} is running and responding".format(pid)) - return True - except FileNotFoundError: - hookenv.log("Cassandra is not running. PID file does not exist.") - return False - except ProcessLookupError: - if os.path.exists(pid_file): - # File disappeared between reading the PID and checking if - # the PID is running. - hookenv.log("Cassandra is not running, but pid file exists.", - WARNING) - else: - hookenv.log("Cassandra is not running. PID file does not exist.") - return False - - -def get_auth_keyspace_replication(session): - if has_cassandra_version('3.0'): - statement = dedent('''\ - SELECT replication FROM system_schema.keyspaces - WHERE keyspace_name='system_auth' - ''') - r = query(session, statement, ConsistencyLevel.QUORUM) - return dict(r[0][0]) - else: - statement = dedent('''\ - SELECT strategy_options FROM system.schema_keyspaces - WHERE keyspace_name='system_auth' - ''') - r = query(session, statement, ConsistencyLevel.QUORUM) - return json.loads(r[0][0]) - - -@logged -def set_auth_keyspace_replication(session, settings): - # Live operation, so keep status the same. - status_set(hookenv.status_get()[0], - 'Updating system_auth rf to {!r}'.format(settings)) - statement = 'ALTER KEYSPACE system_auth WITH REPLICATION = %s' - query(session, statement, ConsistencyLevel.ALL, (settings,)) - - -@logged -def repair_auth_keyspace(): - # Repair takes a long time, and may need to be retried due to 'snapshot - # creation' errors, but should certainly complete within an hour since - # the keyspace is tiny. - status_set(hookenv.status_get()[0], - 'Repairing system_auth keyspace') - nodetool('repair', 'system_auth', timeout=3600) - - -def is_bootstrapped(unit=None): - '''Return True if the node has already bootstrapped into the cluster.''' - if unit is None or unit == hookenv.local_unit(): - return hookenv.config().get('bootstrapped', False) - elif coordinator.relid: - return bool(hookenv.relation_get(rid=coordinator.relid, - unit=unit).get('bootstrapped')) - else: - return False - - -def set_bootstrapped(): - # We need to store this flag in two locations. The peer relation, - # so peers can see it, and local state, for when we haven't joined - # the peer relation yet. actions.publish_bootstrapped_flag() - # calls this method again when necessary to ensure that state is - # propagated # if/when the peer relation is joined. - config = hookenv.config() - config['bootstrapped'] = True - if coordinator.relid is not None: - hookenv.relation_set(coordinator.relid, bootstrapped="1") - if config.changed('bootstrapped'): - hookenv.log('Bootstrapped') - else: - hookenv.log('Already bootstrapped') - - -def get_bootstrapped(): - units = [hookenv.local_unit()] - if coordinator.relid is not None: - units.extend(hookenv.related_units(coordinator.relid)) - return set([unit for unit in units if is_bootstrapped(unit)]) - - -def get_bootstrapped_ips(): - return set([unit_to_ip(unit) for unit in get_bootstrapped()]) - - -def unit_to_ip(unit): - if unit is None or unit == hookenv.local_unit(): - return hookenv.unit_private_ip() - elif coordinator.relid: - pa = hookenv.relation_get(rid=coordinator.relid, - unit=unit).get('private-address') - return hookenv._ensure_ip(pa) - else: - return None - - -def get_node_status(): - '''Return the Cassandra node status. - - May be NORMAL, JOINING, DECOMMISSIONED etc., or None if we can't tell. - ''' - if not is_cassandra_running(): - return None - raw = nodetool('netstats') - m = re.search(r'(?m)^Mode:\s+(\w+)$', raw) - if m is None: - return None - return m.group(1).upper() - - -def is_decommissioned(): - status = get_node_status() - if status in ('DECOMMISSIONED', 'LEAVING'): - hookenv.log('This node is {}'.format(status), WARNING) - return True - return False - - -@logged -def emit_describe_cluster(): - '''Run nodetool describecluster for the logs.''' - nodetool('describecluster') # Implicit emit - - -@logged -def emit_status(): - '''Run 'nodetool status' for the logs.''' - nodetool('status') # Implicit emit - - -@logged -def emit_netstats(): - '''Run 'nodetool netstats' for the logs.''' - nodetool('netstats') # Implicit emit - - -def emit_cluster_info(): - emit_describe_cluster() - emit_status() - emit_netstats() - - -# FOR CHARMHELPERS (and think of a better name) -def week_spread(unit_num): - '''Pick a time for a unit's weekly job. - - Jobs are spread out evenly throughout the week as best we can. - The chosen time only depends on the unit number, and does not change - if other units are added and removed; while the chosen time will not - be perfect, we don't have to worry about skipping a weekly job if - units are added or removed at the wrong moment. - - Returns (dow, hour, minute) suitable for cron. - ''' - def vdc(n, base=2): - '''Van der Corpet sequence. 0, 0.5, 0.25, 0.75, 0.125, 0.625, ... - - http://rosettacode.org/wiki/Van_der_Corput_sequence#Python - ''' - vdc, denom = 0, 1 - while n: - denom *= base - n, remainder = divmod(n, base) - vdc += remainder / denom - return vdc - # We could use the vdc() function to distribute jobs evenly throughout - # the week, so unit 0==0, unit 1==3.5days, unit 2==1.75 etc. But - # plain modulo for the day of week is easier for humans and what - # you expect for 7 units or less. - sched_dow = unit_num % 7 - # We spread time of day so each batch of 7 units gets the same time, - # as far spread out from the other batches of 7 units as possible. - minutes_in_day = 24 * 60 - sched = timedelta(minutes=int(minutes_in_day * vdc(unit_num // 7))) - sched_hour = sched.seconds // (60 * 60) - sched_minute = sched.seconds // 60 - sched_hour * 60 - return (sched_dow, sched_hour, sched_minute) - - -# FOR CHARMHELPERS. This should be a constant in nrpe.py -def local_plugins_dir(): - return '/usr/local/lib/nagios/plugins' - - -def leader_ping(): - '''Make a change in the leader settings, waking the non-leaders.''' - assert hookenv.is_leader() - last = int(hookenv.leader_get('ping') or 0) - hookenv.leader_set(ping=str(last + 1)) - - -def get_unit_superusers(): - '''Return the set of units that have had their superuser accounts created. - ''' - raw = hookenv.leader_get('superusers') - return set(json.loads(raw or '[]')) - - -def set_unit_superusers(superusers): - hookenv.leader_set(superusers=json.dumps(sorted(superusers))) - - -def status_set(state, message): - '''Set the unit status and log a message.''' - hookenv.status_set(state, message) - hookenv.log('{} unit state: {}'.format(state, message)) - - -def service_status_set(state, message): - '''Set the service status and log a message.''' - subprocess.check_call(['status-set', '--service', state, message]) - hookenv.log('{} service state: {}'.format(state, message)) - - -def get_service_name(relid): - '''Return the service name for the other end of relid.''' - units = hookenv.related_units(relid) - if units: - return units[0].split('/', 1)[0] - else: - return None - - -def peer_relid(): - return coordinator.relid - - -@logged -def set_active(): - '''Set happy state''' - if hookenv.unit_private_ip() in get_seed_ips(): - msg = 'Live seed' - else: - msg = 'Live node' - status_set('active', msg) - - if hookenv.is_leader(): - n = num_nodes() - if n == 1: - n = 'Single' - service_status_set('active', '{} node cluster'.format(n)) - - -def update_hosts_file(hosts_file, hosts_map): - """Older versions of Cassandra need own hostname resolution.""" - with open(hosts_file, 'r') as hosts: - lines = hosts.readlines() - - newlines = [] - for ip, hostname in hosts_map.items(): - if not ip or not hostname: - continue - - keepers = [] - for line in lines: - _line = line.split() - if len(_line) < 2 or not (_line[0] == ip or hostname in _line[1:]): - keepers.append(line) - else: - hookenv.log('Marking line {!r} for update or removal' - ''.format(line.strip()), level=DEBUG) - - lines = keepers - newlines.append('{} {}\n'.format(ip, hostname)) - - lines += newlines - - with tempfile.NamedTemporaryFile(delete=False) as tmpfile: - with open(tmpfile.name, 'w') as hosts: - for line in lines: - hosts.write(line) - - os.rename(tmpfile.name, hosts_file) - os.chmod(hosts_file, 0o644) diff --git a/charms/trusty/cassandra/hooks/hooks.py b/charms/trusty/cassandra/hooks/hooks.py deleted file mode 100644 index e5b64ed..0000000 --- a/charms/trusty/cassandra/hooks/hooks.py +++ /dev/null @@ -1,61 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -from charmhelpers import fetch -from charmhelpers.core import hookenv - - -def set_proxy(): - import os - config = hookenv.config() - if config['http_proxy']: - os.environ['ftp_proxy'] = config['http_proxy'] - os.environ['http_proxy'] = config['http_proxy'] - os.environ['https_proxy'] = config['http_proxy'] - - -def bootstrap(): - try: - import bcrypt # NOQA: flake8 - import cassandra # NOQA: flake8 - except ImportError: - packages = ['python3-bcrypt', 'python3-cassandra'] - set_proxy() - fetch.configure_sources(update=True) - fetch.apt_install(packages, fatal=True) - import bcrypt # NOQA: flake8 - import cassandra # NOQA: flake8 - - -def default_hook(): - if not hookenv.has_juju_version('1.24'): - hookenv.status_set('blocked', 'Requires Juju 1.24 or higher') - # Error state, since we don't have 1.24 to give a nice blocked state. - raise SystemExit(1) - - # These need to be imported after bootstrap() or required Python - # packages may not have been installed. - import definitions - - # Only useful for debugging, or perhaps have this enabled with a config - # option? - # from loglog import loglog - # loglog('/var/log/cassandra/system.log', prefix='C*: ') - - hookenv.log('*** {} Hook Start'.format(hookenv.hook_name())) - sm = definitions.get_service_manager() - sm.manage() - hookenv.log('*** {} Hook Done'.format(hookenv.hook_name())) diff --git a/charms/trusty/cassandra/hooks/install b/charms/trusty/cassandra/hooks/install deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/install +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/hooks/leader-elected b/charms/trusty/cassandra/hooks/leader-elected deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/leader-elected +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/hooks/leader-settings-changed b/charms/trusty/cassandra/hooks/leader-settings-changed deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/leader-settings-changed +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/hooks/loglog.py b/charms/trusty/cassandra/hooks/loglog.py deleted file mode 100644 index 33f3af8..0000000 --- a/charms/trusty/cassandra/hooks/loglog.py +++ /dev/null @@ -1,42 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -import atexit -import subprocess -import threading -import time - -from charmhelpers.core import hookenv - - -def loglog(filename, prefix='', level=hookenv.DEBUG): - '''Mirror an arbitrary log file to the Juju hook log in the background.''' - tailproc = subprocess.Popen(['tail', '-F', filename], - stdout=subprocess.PIPE, - universal_newlines=True) - atexit.register(tailproc.terminate) - - def loglog_t(tailproc=tailproc): - while True: - line = tailproc.stdout.readline() - if line: - hookenv.log('{}{}'.format(prefix, line), level) - else: - time.sleep(0.1) - continue - - t = threading.Thread(target=loglog_t, daemon=True) - t.start() diff --git a/charms/trusty/cassandra/hooks/nrpe-external-master-relation-changed b/charms/trusty/cassandra/hooks/nrpe-external-master-relation-changed deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/nrpe-external-master-relation-changed +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/hooks/relations.py b/charms/trusty/cassandra/hooks/relations.py deleted file mode 100644 index f7870a1..0000000 --- a/charms/trusty/cassandra/hooks/relations.py +++ /dev/null @@ -1,139 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -import os.path - -import yaml - -from charmhelpers.core import hookenv, host -from charmhelpers.core.hookenv import log, WARNING -from charmhelpers.core.services.helpers import RelationContext - -from coordinator import coordinator - - -class PeerRelation(RelationContext): - interface = 'cassandra-cluster' - name = 'cluster' - - def is_ready(self): - # All units except the leader need to wait until the peer - # relation is available. - if coordinator.relid is not None or hookenv.is_leader(): - return True - return False - - -# FOR CHARMHELPERS (if we can integrate Juju 1.24 storage too) -class StorageRelation(RelationContext): - '''Wait for the block storage mount to become available. - - Charms using this should add a 'wait_for_storage_broker' boolean - configuration option in their config.yaml file. This is necessary - to avoid potential data loss race conditions, because otherwise a - unit will be started up using local disk before it becomes aware - that it should be using external storage. - - 'relname' is the relation name. - - 'mountpount' is the mountpoint. Use the default if you have a single - block storage broker relation. The default is calculated to avoid - configs using the unit name (/srv/${service}_${unitnumber}). - ''' - interface = 'block-storage' - mountpoint = None - - def __init__(self, name=None, mountpoint=None): - if name is None: - name = self._get_relation_name() - super(StorageRelation, self).__init__(name) - - if mountpoint is None: - mountpoint = os.path.join('/srv/', - hookenv.local_unit().replace('/', '_')) - self._requested_mountpoint = mountpoint - - if len(self.get('data', [])) == 0: - self.mountpoint = None - elif mountpoint == self['data'][0].get('mountpoint', None): - self.mountpoint = mountpoint - else: - self.mountpoint = None - - def _get_relation_name(self): - with open(os.path.join(hookenv.charm_dir(), - 'metadata.yaml'), 'r') as mdf: - md = yaml.safe_load(mdf) - for section in ['requires', 'provides']: - for relname in md.get(section, {}).keys(): - if md[section][relname]['interface'] == 'block-storage': - return relname - raise LookupError('No block-storage relation defined') - - def is_ready(self): - if hookenv.config('wait_for_storage_broker'): - if self.mountpoint: - log("External storage mounted at {}".format(self.mountpoint)) - return True - else: - log("Waiting for block storage broker to mount {}".format( - self._requested_mountpoint), WARNING) - return False - return True - - def provide_data(self, remote_service, service_ready): - hookenv.log('Requesting mountpoint {} from {}' - .format(self._requested_mountpoint, remote_service)) - return dict(mountpoint=self._requested_mountpoint) - - def needs_remount(self): - config = hookenv.config() - return config.get('live_mountpoint') != self.mountpoint - - def migrate(self, src_dir, subdir): - assert self.needs_remount() - assert subdir, 'Can only migrate to a subdirectory on a mount' - - config = hookenv.config() - config['live_mountpoint'] = self.mountpoint - - if self.mountpoint is None: - hookenv.log('External storage AND DATA gone.' - 'Reverting to original local storage', WARNING) - return - - dst_dir = os.path.join(self.mountpoint, subdir) - if os.path.exists(dst_dir): - hookenv.log('{} already exists. Not migrating data.'.format( - dst_dir)) - return - - # We are migrating the contents of src_dir, so we want a - # trailing slash to ensure rsync's behavior. - if not src_dir.endswith('/'): - src_dir += '/' - - # We don't migrate data directly into the new destination, - # which allows us to detect a failed migration and recover. - tmp_dst_dir = dst_dir + '.migrating' - hookenv.log('Migrating data from {} to {}'.format( - src_dir, tmp_dst_dir)) - host.rsync(src_dir, tmp_dst_dir, flags='-av') - - hookenv.log('Moving {} to {}'.format(tmp_dst_dir, dst_dir)) - os.rename(tmp_dst_dir, dst_dir) - - assert not self.needs_remount() diff --git a/charms/trusty/cassandra/hooks/stop b/charms/trusty/cassandra/hooks/stop deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/stop +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/hooks/upgrade-charm b/charms/trusty/cassandra/hooks/upgrade-charm deleted file mode 100755 index 9128cab..0000000 --- a/charms/trusty/cassandra/hooks/upgrade-charm +++ /dev/null @@ -1,20 +0,0 @@ -#!/usr/bin/python3 -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -import hooks -if __name__ == '__main__': - hooks.bootstrap() - hooks.default_hook() diff --git a/charms/trusty/cassandra/icon.svg b/charms/trusty/cassandra/icon.svg deleted file mode 100644 index 7615021..0000000 --- a/charms/trusty/cassandra/icon.svg +++ /dev/null @@ -1,650 +0,0 @@ -<?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- Created with Inkscape (http://www.inkscape.org/) --> - -<svg - xmlns:dc="http://purl.org/dc/elements/1.1/" - xmlns:cc="http://creativecommons.org/ns#" - xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" - xmlns:svg="http://www.w3.org/2000/svg" - xmlns="http://www.w3.org/2000/svg" - xmlns:xlink="http://www.w3.org/1999/xlink" - xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" - xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" - width="96" - height="96" - id="svg6517" - version="1.1" - inkscape:version="0.48+devel r12304" - sodipodi:docname="cassandra01.svg"> - <defs - 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-import subprocess -import sys - -# Strip the -W option, as its noise messes with test output. -args = list(sys.argv[1:]) -if '-W' in args: - args.remove('-W') -cmd = ['juju-deployer'] + args -try: - subprocess.check_output(cmd, stderr=subprocess.STDOUT) -except subprocess.CalledProcessError as x: - sys.stderr.write(x.output) - sys.exit(x.returncode) diff --git a/charms/trusty/cassandra/lib/testcharms/empty/hooks/install b/charms/trusty/cassandra/lib/testcharms/empty/hooks/install deleted file mode 100755 index ce28f62..0000000 --- a/charms/trusty/cassandra/lib/testcharms/empty/hooks/install +++ /dev/null @@ -1,6 +0,0 @@ -#!/bin/sh -ex -# apt-get install \ -# python3-pip python3-dev python3-six python3-yaml \ -# build-essential libev4 libev-dev -# pip3 install blist -# pip3 install cassandra-driver diff --git a/charms/trusty/cassandra/lib/testcharms/empty/metadata.yaml b/charms/trusty/cassandra/lib/testcharms/empty/metadata.yaml deleted file mode 100644 index bc3e0f0..0000000 --- a/charms/trusty/cassandra/lib/testcharms/empty/metadata.yaml +++ /dev/null @@ -1,11 +0,0 @@ -name: empty -maintainer: Somchai Turdsak <somchai@example.com> -summary: A charm that does nothing except define some relations. -description: | - This is a client charm for testing the Cassandra client relations. -tags: ["databases"] -requires: - database: - interface: cassandra - database-admin: - interface: cassandra-admin diff --git a/charms/trusty/cassandra/metadata.yaml b/charms/trusty/cassandra/metadata.yaml deleted file mode 100644 index 7ec537a..0000000 --- a/charms/trusty/cassandra/metadata.yaml +++ /dev/null @@ -1,38 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -name: cassandra -maintainer: Stuart Bishop <stuart.bishop@canonical.com> -summary: distributed storage system for structured data -description: | - Cassandra is a distributed (peer-to-peer) system for the management and - storage of structured data. -tags: ["databases"] -provides: - database: - interface: cassandra - database-admin: - interface: cassandra-admin - nrpe-external-master: - interface: nrpe-external-master - scope: container - data: - interface: block-storage - scope: container - optional: true -peers: - cluster: - interface: cassandra-cluster diff --git a/charms/trusty/cassandra/scripts/volume-common.sh b/charms/trusty/cassandra/scripts/volume-common.sh deleted file mode 100755 index 3af8ff1..0000000 --- a/charms/trusty/cassandra/scripts/volume-common.sh +++ /dev/null @@ -1,220 +0,0 @@ -#!/bin/bash -# Author: JuanJo Ciarlante <jjo@canonical.com> -# Copyright: Canonical Ltd. 2012 -# License: GPLv2 -# -# juju storage common shell library -# - -#------------------------------ -# Returns a mount point from passed vol-id, e.g. /srv/juju/vol-000012345 -# -# @param $1 volume id -# @echoes mntpoint-path eg /srv/juju/vol-000012345 -#------------------------------ -_mntpoint_from_volid() { - local volid=${1?missing volid} - [[ ${volid} != "" ]] && echo /srv/juju/${volid} || echo "" -} - - -#------------------------------ -# Assert that passed mount points hold different filesystems -# -# @param $1 mntpoint1 -# @param $2 mntpoint2 -# @return 0 different FS -# 1 same FS -#------------------------------ -_assert_diff_fs() { - local mnt1="${1:?missing mntpoint1}" - local mnt2="${2:?missing mntpoint2}" - local fsid1 fsid2 - fsid1=$(stat --file-system -c '%i' "${mnt1}" 2>/dev/null) - fsid2=$(stat --file-system -c '%i' "${mnt2}" 2>/dev/null) - [[ ${fsid1} != ${fsid2} ]] - return $? -} - -#------------------------------ -# Initialize volume (sfdisk, mkfs.ext4) IFF NOT already, mount it at -# /srv/juju/<volume-id> -# -# @param $1 volume-id, can be any arbitrary string, better if -# equal to EC2/OS vol-id name (just for consistency) -# @return 0 success -# 1 nil volid/etc -# 2 error while handling the device (non-block device, sfdisk error, etc) -#------------------------------ -volume_init_and_mount() { - ## Find 1st unused device (reverse sort /dev/vdX) - local volid=${1:?missing volid} - local dev_regexp - local dev found_dev= - local label="${volid}" - local func=${FUNCNAME[0]} - dev_regexp=$(config-get volume-dev-regexp) || return 1 - mntpoint=$(_mntpoint_from_volid ${volid}) - - [[ -z ${mntpoint} ]] && return 1 - if mount | egrep -qw "${mntpoint}";then - _assert_diff_fs "/" "${mntpoint}" || { - juju-log "ERROR: returning from ${func} with '${mntpoint}' still at '/' filesystem" - return 1 - } - juju-log "NOTICE: mntpoint=${mntpoint} already mounted, skipping volume_init_and_mount" - return 0 - fi - - # Sanitize - case "${dev_regexp?}" in - # Careful: this is glob matching against an regexp - - # quite narrowed - /dev/*|/dev/disk/by-*) - ;; ## Ok - *) - juju-log "ERROR: invalid 'volume-dev-regexp' specified" - return 1 - ;; - esac - - # Assume udev will create only existing devices - for dev in $(ls -rd1 /dev/* | egrep "${dev_regexp}" | egrep -v "[1-9]$" 2>/dev/null);do - ## Check it's not already mounted - mount | egrep -q "${dev}[1-9]?" || { found_dev=${dev}; break;} - done - [[ -n "${found_dev}" ]] || { - juju-log "ERROR: ${func}: coult not find an unused device for regexp: ${dev_regexp}" - return 1 - } - partition1_dev=${found_dev}1 - - juju-log "INFO: ${func}: found_dev=${found_dev}" - [[ -b ${found_dev?} ]] || { - juju-log "ERROR: ${func}: ${found_dev} is not a blockdevice" - return 2 - } - - # Run next set of "dangerous" commands as 'set -e', in a subshell - ( - set -e - # Re-read partition - will fail if already in use - blockdev --rereadpt ${found_dev} - - # IFF not present, create partition with full disk - if [[ -b ${partition1_dev?} ]];then - juju-log "INFO: ${func}: ${partition1_dev} already present - skipping sfdisk." - else - juju-log "NOTICE: ${func}: ${partition1_dev} not present at ${found_dev}, running: sfdisk ${found_dev} ..." - # Format partition1_dev as max sized - echo ",+," | sfdisk ${found_dev} - fi - - # Create an ext4 filesystem if NOT already present - # use e.g. LABEl=vol-000012345 - if file -s ${partition1_dev} | egrep -q ext4 ; then - juju-log "INFO: ${func}: ${partition1_dev} already formatted as ext4 - skipping mkfs.ext4." - ## Check e2label - log if it has changed (e.g. already used / initialized with a diff label) - local curr_label=$(e2label "${partition1_dev}") - if [[ ${curr_label} != ${label} ]]; then - juju-log "WARNING: ${func}: ${partition1_dev} had label=${curr_label}, overwritting with label=${label}" - e2label ${partition1_dev} "${label}" - fi - else - juju-log "NOTICE: ${func}: running: mkfs.ext4 -L ${label} ${partition1_dev}" - mkfs.ext4 -L "${label}" ${partition1_dev} - fi - - # Mount it at e.g. /srv/juju/vol-000012345 - [[ -d "${mntpoint}" ]] || mkdir -p "${mntpoint}" - mount | fgrep -wq "${partition1_dev}" || { - local files_below_mntpoint="$(cd ${mntpoint}; ls -1A |wc -l )" - if [[ ${files_below_mntpoint} -ne 0 ]]; then - juju-log "ERROR: *not* doing 'mount "${partition1_dev}" "${mntpoint}"' because there are already ${files_below_mntpoint} files/dirs beneath '${mntpoint}'" - exit 1 - fi - ## should always fsck before mounting (e.g. fsck after max time (-i) / max mounts (-c) ) - fsck "${partition1_dev}" - mount "${partition1_dev}" "${mntpoint}" - juju-log "INFO: ${func}: mounted as: '$(mount | fgrep -w ${partition1_dev})'" - } - - # Add it to fstab is not already there - fgrep -wq "LABEL=${label}" /etc/fstab || { - echo "LABEL=${label} ${mntpoint} ext4 defaults,nobootwait,comment=${volid}" | tee -a /etc/fstab - juju-log "INFO: ${func}: LABEL=${label} added to /etc/fstab" - } - ) - # Final assertion: mounted filesystem id is different from '/' (effectively mounted) - _assert_diff_fs "/" "${mntpoint}" || { - juju-log "ERROR: returning from ${func} with '${mntpoint}' still at '/' filesystem (couldn't mount new volume)" - ## try to rmdir mntpoint directory - should not be 'mistakenly' used - rmdir ${mntpoint} - return 1 - } - return $? -} - -#------------------------------ -# Get volume-id from juju config "volume-map" dictionary as -# volume-map[JUJU_UNIT_NAME] -# @return 0 if volume-map value found ( does echo volid or ""), else: -# 1 if not found or None -# -#------------------------------ -volume_get_volid_from_volume_map() { - local volid=$(config-get "volume-map"|python -c$'import sys;import os;from yaml import load;from itertools import chain; volume_map = load(sys.stdin)\nif volume_map: print volume_map.get(os.environ["JUJU_UNIT_NAME"])') - [[ $volid == None ]] && return 1 - echo "$volid" -} - -# Returns true if permanent storage (considers --ephemeral) -# @returns 0 if volid set and not --ephemeral, else: -# 1 -volume_is_permanent() { - local volid=${1:?missing volid} - [[ -n ${volid} && ${volid} != --ephemeral ]] && return 0 || return 1 -} -volume_mount_point_from_volid(){ - local volid=${1:?missing volid} - if volume_is_permanent "${volid}";then - echo "/srv/juju/${volid}" - return 0 - else - return 1 - fi -} -# Do we have a valid storage state? -# @returns 0 does echo $volid (can be "--ephemeral") -# 1 config state is invalid - we should not serve -volume_get_volume_id() { - local ephemeral_storage - local volid - ephemeral_storage=$(config-get volume-ephemeral-storage) || return 1 - volid=$(volume_get_volid_from_volume_map) || return 1 - if [[ $ephemeral_storage == True ]];then - # Ephemeral -> should not have a valid volid - if [[ $volid != "" ]];then - juju-log "ERROR: volume-ephemeral-storage is True, but $JUJU_UNIT_NAME maps to volid=${volid}" - return 1 - fi - else - # Durable (not ephemeral) -> must have a valid volid for this unit - if [[ $volid == "" ]];then - juju-log "ERROR: volume-ephemeral-storage is False, but no volid found for: $JUJU_UNIT_NAME" - return 1 - fi - fi - echo "$volid" - return 0 -} - -case "$1" in - ## allow non SHELL scripts to call helper functions - call) - : ${JUJU_UNIT_NAME?} ## Must be called in juju environment - shift; - function="${1:?usage: ${0##*/} call function arg1 arg2 ...}" - shift; - ${function} "$@" && exit 0 || exit 1 -esac diff --git a/charms/trusty/cassandra/templates/cassandra_maintenance_cron.tmpl b/charms/trusty/cassandra/templates/cassandra_maintenance_cron.tmpl deleted file mode 100644 index 3a9b9d4..0000000 --- a/charms/trusty/cassandra/templates/cassandra_maintenance_cron.tmpl +++ /dev/null @@ -1,6 +0,0 @@ -# Cassandra maintenance -# Staggered weekly repairs -# m h dom mon dow user command -{{minute}} {{hour}} * * {{dow}} cassandra run-one-until-success nodetool repair -pr >> /var/log/cassandra/maintenance.log 2>&1 - -# EOF diff --git a/charms/trusty/cassandra/templates/nrpe_cmd_file.tmpl b/charms/trusty/cassandra/templates/nrpe_cmd_file.tmpl deleted file mode 100644 index 53318fa..0000000 --- a/charms/trusty/cassandra/templates/nrpe_cmd_file.tmpl +++ /dev/null @@ -1,6 +0,0 @@ -#--------------------------------------------------- -# This file is Juju managed -#--------------------------------------------------- -# ${NAGIOS_CONTEXT} ${SERVICE_DESCRIPTION} -command[${NRPE_CMD_NAME}]=${NRPE_CMD} - diff --git a/charms/trusty/cassandra/templates/nrpe_service_file.tmpl b/charms/trusty/cassandra/templates/nrpe_service_file.tmpl deleted file mode 100644 index ab0b76f..0000000 --- a/charms/trusty/cassandra/templates/nrpe_service_file.tmpl +++ /dev/null @@ -1,10 +0,0 @@ -#--------------------------------------------------- -# This file is Juju managed -#--------------------------------------------------- -define service { - use active-service - host_name ${NAGIOS_HOSTNAME} - service_description ${NAGIOS_HOSTNAME} ${SERVICE_DESCRIPTION} - check_command check_nrpe!${NRPE_CMD_NAME} - servicegroups ${NAGIOS_SERVICEGROUP}, -} diff --git a/charms/trusty/cassandra/testing/__init__.py b/charms/trusty/cassandra/testing/__init__.py deleted file mode 100644 index b1b7fcd..0000000 --- a/charms/trusty/cassandra/testing/__init__.py +++ /dev/null @@ -1,15 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. diff --git a/charms/trusty/cassandra/testing/amuletfixture.py b/charms/trusty/cassandra/testing/amuletfixture.py deleted file mode 100644 index 988267f..0000000 --- a/charms/trusty/cassandra/testing/amuletfixture.py +++ /dev/null @@ -1,234 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -from functools import wraps -import json -import os -import shutil -import subprocess -import tempfile -import time - -import amulet -import yaml - - -class AmuletFixture(amulet.Deployment): - def __init__(self, series, verbose=False): - if verbose: - super(AmuletFixture, self).__init__(series=series) - else: - # We use a wrapper around juju-deployer so we can fix how it is - # invoked. In particular, turn off all the noise so we can - # actually read our test output. - juju_deployer = os.path.abspath(os.path.join( - os.path.dirname(__file__), os.pardir, 'lib', - 'juju-deployer-wrapper.py')) - super(AmuletFixture, self).__init__(series=series, - juju_deployer=juju_deployer) - assert self.series == series - - def setUp(self): - self._temp_dirs = [] - - self.reset_environment(force=True) - - # Repackage our charm to a temporary directory, allowing us - # to strip our virtualenv symlinks that would otherwise cause - # juju to abort. We also strip the .bzr directory, working - # around Bug #1394078. - self.repackage_charm() - - # Fix amulet.Deployment so it doesn't depend on environment - # variables or the current working directory, but rather the - # environment we have introspected. - with open(os.path.join(self.charm_dir, 'metadata.yaml'), 'r') as s: - self.charm_name = yaml.safe_load(s)['name'] - self.charm_cache.test_charm = None - self.charm_cache.fetch(self.charm_name, self.charm_dir, - series=self.series) - - # Explicitly reset $JUJU_REPOSITORY to ensure amulet and - # juju-deployer does not mess with the real one, per Bug #1393792 - self.org_repo = os.environ.get('JUJU_REPOSITORY', None) - temp_repo = tempfile.mkdtemp(suffix='.repo') - self._temp_dirs.append(temp_repo) - os.environ['JUJU_REPOSITORY'] = temp_repo - os.makedirs(os.path.join(temp_repo, self.series), mode=0o700) - - def tearDown(self, reset_environment=True): - if reset_environment: - self.reset_environment() - if self.org_repo is None: - del os.environ['JUJU_REPOSITORY'] - else: - os.environ['JUJU_REPOSITORY'] = self.org_repo - - def deploy(self, timeout=None): - '''Deploying or updating the configured system. - - Invokes amulet.Deployer.setup with a nicer name and standard - timeout handling. - ''' - if timeout is None: - timeout = int(os.environ.get('AMULET_TIMEOUT', 900)) - - # juju-deployer is buried under here, and has race conditions. - # Sleep a bit before invoking it, so its cached view of the - # environment matches reality. - time.sleep(15) - - # If setUp fails, tearDown is never called leaving the - # environment setup. This is useful for debugging. - self.setup(timeout=timeout) - self.wait(timeout=timeout) - - def __del__(self): - for temp_dir in self._temp_dirs: - if os.path.exists(temp_dir): - shutil.rmtree(temp_dir, ignore_errors=True) - - def get_status(self): - try: - raw = subprocess.check_output(['juju', 'status', '--format=json'], - universal_newlines=True) - except subprocess.CalledProcessError as x: - print(x.output) - raise - if raw: - return json.loads(raw) - return None - - def wait(self, timeout=None): - '''Wait until the environment has reached a stable state.''' - if timeout is None: - timeout = int(os.environ.get('AMULET_TIMEOUT', 900)) - cmd = ['timeout', str(timeout), 'juju', 'wait', '-q'] - try: - subprocess.check_output(cmd, universal_newlines=True) - except subprocess.CalledProcessError as x: - print(x.output) - raise - - def reset_environment(self, force=False): - if force: - status = self.get_status() - machines = [m for m in status.get('machines', {}).keys() - if m != '0'] - if machines: - subprocess.call(['juju', 'destroy-machine', - '--force'] + machines, - stdout=subprocess.DEVNULL, - stderr=subprocess.DEVNULL) - fails = dict() - while True: - status = self.get_status() - service_items = status.get('services', {}).items() - if not service_items: - break - for service_name, service in service_items: - if service.get('life', '') not in ('dying', 'dead'): - subprocess.call(['juju', 'destroy-service', service_name], - stdout=subprocess.PIPE, - stderr=subprocess.STDOUT) - for unit_name, unit in service.get('units', {}).items(): - if unit.get('agent-state', None) == 'error': - if force: - # If any units have failed hooks, unstick them. - # This should no longer happen now we are - # using the 'destroy-machine --force' command - # earlier. - try: - subprocess.check_output( - ['juju', 'resolved', unit_name], - stderr=subprocess.STDOUT) - except subprocess.CalledProcessError: - # A previous 'resolved' call make cause a - # subsequent one to fail if it is still - # being processed. However, we need to keep - # retrying because after a successful - # resolution a subsequent hook may cause an - # error state. - pass - else: - fails[unit_name] = unit - time.sleep(1) - - harvest_machines = [] - for machine, state in status.get('machines', {}).items(): - if machine != "0" and state.get('life') not in ('dying', 'dead'): - harvest_machines.append(machine) - - if harvest_machines: - cmd = ['juju', 'remove-machine', '--force'] + harvest_machines - subprocess.check_output(cmd, stderr=subprocess.STDOUT) - - if fails: - raise Exception("Teardown failed", fails) - - def repackage_charm(self): - """Mirror the charm into a staging area. - - We do this to work around issues with Amulet, juju-deployer - and juju. In particular: - - symlinks in the Python virtual env pointing outside of the - charm directory. - - odd bzr interactions, such as tests being run on the committed - version of the charm, rather than the working tree. - - Returns the test charm directory. - """ - # Find the charm_dir we are testing - src_charm_dir = os.path.dirname(__file__) - while True: - if os.path.exists(os.path.join(src_charm_dir, - 'metadata.yaml')): - break - assert src_charm_dir != os.sep, 'metadata.yaml not found' - src_charm_dir = os.path.abspath(os.path.join(src_charm_dir, - os.pardir)) - - with open(os.path.join(src_charm_dir, 'metadata.yaml'), 'r') as s: - self.charm_name = yaml.safe_load(s)['name'] - - repack_root = tempfile.mkdtemp(suffix='.charm') - self._temp_dirs.append(repack_root) - # juju-deployer now requires the series in the path when - # deploying from an absolute path. - repack_root = os.path.join(repack_root, self.series) - os.makedirs(repack_root, mode=0o700) - - self.charm_dir = os.path.join(repack_root, self.charm_name) - - # Ignore .bzr to work around weird bzr interactions with - # juju-deployer, per Bug #1394078, and ignore .venv - # due to a) it containing symlinks juju will reject and b) to avoid - # infinite recursion. - shutil.copytree(src_charm_dir, self.charm_dir, symlinks=True, - ignore=shutil.ignore_patterns('.venv?', '.bzr')) - - -# Bug #1417097 means we need to monkey patch Amulet for now. -real_juju = amulet.helpers.juju - - -@wraps(real_juju) -def patched_juju(args, env=None): - args = [str(a) for a in args] - return real_juju(args, env) - -amulet.helpers.juju = patched_juju -amulet.deployer.juju = patched_juju diff --git a/charms/trusty/cassandra/testing/mocks.py b/charms/trusty/cassandra/testing/mocks.py deleted file mode 100644 index 7d03f23..0000000 --- a/charms/trusty/cassandra/testing/mocks.py +++ /dev/null @@ -1,182 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -''' -charm-helpers mocks. -''' -import os.path -import shutil -import tempfile -from unittest.mock import patch - -import yaml - -from charmhelpers import fetch -from charmhelpers.core import hookenv - - -CHARM_DIR = os.path.abspath(os.path.join( - os.path.dirname(__file__), os.pardir)) - - -def mock_charmhelpers(test_case): - hookenv.cache.clear() # Clear the hookenv memorisation. - - mocks = [] - - # Mock environment - charm_dir = tempfile.TemporaryDirectory() - test_case.addCleanup(charm_dir.cleanup) - mock_env = patch.dict(os.environ, dict(CHARM_DIR=charm_dir.name)) - mock_env.start() - test_case.addCleanup(mock_env.stop) - shutil.copyfile(os.path.join(CHARM_DIR, 'metadata.yaml'), - os.path.join(charm_dir.name, 'metadata.yaml')) - - # Mock config. - # Set items: - # hookenv.config()['foo'] = 'bar' - # Reset 'previous' state: - # hookenv.config().save(); - # hookenv.config().load_previous() - config = hookenv.Config() - tmp = tempfile.NamedTemporaryFile(suffix='.config') - config.CONFIG_FILE_NAME = tmp.name - test_case.addCleanup(tmp.close) - with open(os.path.join(CHARM_DIR, 'config.yaml'), 'rb') as f: - defaults = yaml.safe_load(f)['options'] - for k, v in defaults.items(): - opt_type = v.get('type', 'string') - opt_val = v.get('default', None) - if opt_val is None: - config[k] = None - elif opt_type == 'string': - config[k] = str(opt_val) - elif opt_type == 'int': - config[k] = int(opt_val) - elif opt_type == 'boolean': - config[k] = bool(opt_val) - - def mock_config(scope=None): - if scope is None: - return config - return config.get(scope, None) - mocks.append(patch('charmhelpers.core.hookenv.config', - side_effect=mock_config, autospec=True)) - - # Magic mocks. - methods = [ - 'charmhelpers.core.hookenv.log', - 'charmhelpers.core.hookenv.hook_name', - 'charmhelpers.core.hookenv.related_units', - 'charmhelpers.core.hookenv.relation_get', - 'charmhelpers.core.hookenv.relation_set', - 'charmhelpers.core.hookenv.relation_ids', - 'charmhelpers.core.hookenv.relation_type', - 'charmhelpers.core.hookenv.service_name', - 'charmhelpers.core.hookenv.local_unit', - 'charmhelpers.core.hookenv.unit_private_ip', - 'charmhelpers.core.hookenv.unit_public_ip', - 'charmhelpers.core.host.log', - 'charmhelpers.fetch.filter_installed_packages', - 'os.chown', 'os.fchown', - ] - for m in methods: - mocks.append(patch(m, autospec=True)) - - for mock in mocks: - mock.start() - test_case.addCleanup(mock.stop) - - hookenv.local_unit.return_value = 'service/1' - - def mock_unit_private_ip(): - return '10.20.0.{}'.format(hookenv.local_unit().split('/')[-1]) - hookenv.unit_private_ip.side_effect = mock_unit_private_ip - - def mock_unit_public_ip(): - return '10.30.0.{}'.format(hookenv.local_unit().split('/')[-1]) - hookenv.unit_public_ip.side_effect = mock_unit_public_ip - - def mock_service_name(): - return hookenv.local_unit().split('/')[0] - hookenv.service_name.side_effect = mock_service_name - - hookenv.relation_ids.side_effect = ( - lambda x: ['{}:1'.format(x)] if x else []) - hookenv.related_units.return_value = ('service/2', 'service/3') - - relinfos = dict() - - def mock_relation_set(relation_id=None, relation_settings=None, **kwargs): - if relation_id is None: - relation_id = hookenv.relation_id() - unit = hookenv.local_unit() - relinfo = mock_relation_get(unit=unit, rid=relation_id) - if relation_settings is not None: - relinfo.update(relation_settings) - relinfo.update(kwargs) - return None - hookenv.relation_set.side_effect = mock_relation_set - - def mock_relation_get(attribute=None, unit=None, rid=None): - if rid is None: - rid = hookenv.relation_id() - if unit is None: - unit = hookenv.remove_unit() - service, unit_num = unit.split('/') - unit_num = int(unit_num) - relinfos.setdefault(rid, {}) - relinfos[rid].setdefault( - unit, {'private-address': '10.20.0.{}'.format(unit_num)}) - relinfo = relinfos[rid][unit] - if attribute is None or attribute == '-': - return relinfo - return relinfo.get(attribute) - hookenv.relation_get.side_effect = mock_relation_get - - def mock_chown(target, uid, gid): - assert uid == 0 - assert gid == 0 - assert os.path.exists(target) - os.chown.side_effect = mock_chown - - def mock_fchown(fd, uid, gid): - assert uid == 0 - assert gid == 0 - os.fchown.side_effect = mock_fchown - - fetch.filter_installed_packages.side_effect = lambda pkgs: list(pkgs) - - def mock_relation_for_unit(unit=None, rid=None): - if unit is None: - unit = hookenv.remote_unit() - service, unit_num = unit.split('/') - unit_num = int(unit_num) - return {'private-address': '10.20.0.{}'.format(unit_num)} - hookenv.relation_for_unit.side_effect = mock_relation_for_unit - - def mock_chown(target, uid, gid): - assert uid == 0 - assert gid == 0 - assert os.path.exists(target) - os.chown.side_effect = mock_chown - - def mock_fchown(fd, uid, gid): - assert uid == 0 - assert gid == 0 - os.fchown.side_effect = mock_fchown - - fetch.filter_installed_packages.side_effect = lambda pkgs: list(pkgs) diff --git a/charms/trusty/cassandra/tests/__init__.py b/charms/trusty/cassandra/tests/__init__.py deleted file mode 100644 index b1b7fcd..0000000 --- a/charms/trusty/cassandra/tests/__init__.py +++ /dev/null @@ -1,15 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. diff --git a/charms/trusty/cassandra/tests/base.py b/charms/trusty/cassandra/tests/base.py deleted file mode 100755 index d308985..0000000 --- a/charms/trusty/cassandra/tests/base.py +++ /dev/null @@ -1,43 +0,0 @@ -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -import functools -from itertools import count -import unittest -from unittest.mock import patch - -from testing.mocks import mock_charmhelpers - -patch = functools.partial(patch, autospec=True) # autospec by default. - - -class TestCaseBase(unittest.TestCase): - def setUp(self): - super(TestCaseBase, self).setUp() - - mock_charmhelpers(self) - - is_lxc = patch('helpers.is_lxc', return_value=False) - is_lxc.start() - self.addCleanup(is_lxc.stop) - - emit = patch('helpers.emit') - emit.start() - self.addCleanup(emit.stop) - - time = patch('time.time', side_effect=count(1)) - time.start() - self.addCleanup(time.stop) diff --git a/charms/trusty/cassandra/tests/test_actions.py b/charms/trusty/cassandra/tests/test_actions.py deleted file mode 100755 index f97df0c..0000000 --- a/charms/trusty/cassandra/tests/test_actions.py +++ /dev/null @@ -1,1156 +0,0 @@ -#!.venv3/bin/python3 - -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -import errno -from itertools import repeat -import os.path -import re -import shutil -import subprocess -import tempfile -from textwrap import dedent -import unittest -from unittest.mock import ANY, call, patch, sentinel -import yaml - -import cassandra -from charmhelpers.core import hookenv - -from tests.base import TestCaseBase -import actions -from coordinator import coordinator -import helpers - - -class TestActions(TestCaseBase): - def test_action_wrapper(self): - @actions.action - def somefunc(*args, **kw): - return 42, args, kw - - hookenv.hook_name.return_value = 'catch-fire' - - # The wrapper stripts the servicename argument, which we have no - # use for, logs a message and invokes the wrapped function. - hookenv.remote_unit.return_value = None - self.assertEqual(somefunc('sn', 1, foo=4), (42, (1,), dict(foo=4))) - hookenv.log.assert_called_once_with('** Action catch-fire/somefunc') - - # Different log message if there is a remote unit. - hookenv.log.reset_mock() - os.environ['JUJU_REMOTE_UNIT'] = 'foo' - self.assertEqual(somefunc('sn', 1, foo=4), (42, (1,), dict(foo=4))) - hookenv.log.assert_called_once_with( - '** Action catch-fire/somefunc (foo)') - - def test_revert_unchangeable_config(self): - config = hookenv.config() - - self.assertIn('datacenter', actions.UNCHANGEABLE_KEYS) - - # In the first hook, revert does nothing as there is nothing to - # revert too. - config['datacenter'] = 'mission_control' - self.assertTrue(config.changed('datacenter')) - actions.revert_unchangeable_config('') - self.assertEqual(config['datacenter'], 'mission_control') - - config.save() - config.load_previous() - config['datacenter'] = 'orbital_1' - - actions.revert_unchangeable_config('') - self.assertEqual(config['datacenter'], 'mission_control') # Reverted - - hookenv.log.assert_any_call(ANY, hookenv.ERROR) # Logged the problem. - - @patch('charmhelpers.core.hookenv.is_leader') - def test_leader_only(self, is_leader): - - @actions.leader_only - def f(*args, **kw): - return args, kw - - is_leader.return_value = False - self.assertIsNone(f(1, foo='bar')) - - is_leader.return_value = True - self.assertEqual(f(1, foo='bar'), ((1,), dict(foo='bar'))) - - def test_set_proxy(self): - # NB. Environment is already mocked. - os.environ['http_proxy'] = '' - os.environ['https_proxy'] = '' - actions.set_proxy('') - self.assertEqual(os.environ['http_proxy'], '') - self.assertEqual(os.environ['https_proxy'], '') - hookenv.config()['http_proxy'] = 'foo' - actions.set_proxy('') - self.assertEqual(os.environ['http_proxy'], 'foo') - self.assertEqual(os.environ['https_proxy'], 'foo') - - @patch('subprocess.check_call') - def test_preinstall(self, check_call): - # Noop if there are no preinstall hooks found running the - # install hook. - hookenv.hook_name.return_value = 'install' - actions.preinstall('') - self.assertFalse(check_call.called) - hookenv.log.assert_any_call('No preinstall hooks found') - - # If preinstall hooks are found running the install hook, - # the preinstall hooks are run. - hook_dirs = [] - hook_files = [] - for i in range(1, 3): - hook_dirs.append(os.path.join(hookenv.charm_dir(), - 'exec.d', str(i))) - hook_files.append(os.path.join(hook_dirs[-1], 'charm-pre-install')) - - os.makedirs(hook_dirs[-1]) - with open(hook_files[-1], 'w') as f1: - print('mocked', file=f1) - os.chmod(hook_files[-1], 0o755) - - check_call.reset_mock() - actions.preinstall('') - - calls = [call(['sh', '-c', f2]) for f2 in hook_files] - check_call.assert_has_calls(calls) - - # If a preinstall hook is not executable, a warning is raised. - hook_dir = os.path.join(hookenv.charm_dir(), 'exec.d', '55') - hook_file = os.path.join(hook_dir, 'charm-pre-install') - os.makedirs(hook_dir) - with open(hook_file, 'w') as f1: - print('whoops', file=f1) - os.chmod(hook_file, 0o644) - check_call.reset_mock() - hookenv.log.reset_mock() - actions.preinstall('') - check_call.assert_has_calls(calls) # Only previous hooks run. - hookenv.log.assert_has_calls([ - call(ANY), - call(ANY), - call(ANY, hookenv.WARNING)]) - - # Nothing happens if the install hook is not being run. - hookenv.hook_name.return_value = 'config-changed' - check_call.reset_mock() - actions.preinstall('') - self.assertFalse(check_call.called) - - @patch('subprocess.check_call') - def test_swapoff(self, check_call): - fstab = ( - b'UUID=abc / ext4 errors=remount-ro 0 1\n' - b'/dev/mapper/cryptswap1 none swap sw 0 0') - with tempfile.NamedTemporaryFile() as f: - f.write(fstab) - f.flush() - actions.swapoff('', f.name) - f.seek(0) - self.assertTrue(b'swap' not in f.read()) - - check_call.assert_called_once_with(['swapoff', '-a']) - - @patch('subprocess.check_call') - def test_swapoff_fails(self, check_call): - check_call.side_effect = RuntimeError() - actions.swapoff('', '') - # A warning is generated if swapoff fails. - hookenv.log.assert_any_call(ANY, hookenv.WARNING) - - @patch('subprocess.check_call') - def test_swapoff_lxc(self, check_call): - # Under LXC, the swapoff action does nothing except log. - helpers.is_lxc.return_value = True - actions.swapoff('') - self.assertFalse(check_call.called) - - @patch('charmhelpers.fetch.configure_sources') - def test_configure_sources(self, configure_sources): - config = hookenv.config() - - # fetch.configure_sources called the first time - actions.configure_sources('') - configure_sources.assert_called_once_with(True) - - # fetch.configure_sources not called if relevant config is unchanged. - config.save() - config.load_previous() - configure_sources.reset_mock() - actions.configure_sources('') - self.assertFalse(configure_sources.called) - - # Changing install_sources causes fetch.configure_sources to be - # called. - config.save() - config.load_previous() - configure_sources.reset_mock() - config['install_sources'] = 'foo' - actions.configure_sources('') - configure_sources.assert_called_once_with(True) - - # Changing install_keys causes fetch.configure_sources to be - # called. - config.save() - config.load_previous() - configure_sources.reset_mock() - config['install_keys'] = 'foo' - actions.configure_sources('') - configure_sources.assert_called_once_with(True) - - @patch('charmhelpers.core.hookenv.charm_dir') - @patch('subprocess.check_call') - def test_add_implicit_package_signing_keys(self, check_call, charm_dir): - charm_dir.return_value = os.path.join(os.path.dirname(__file__), - os.pardir) - actions.add_implicit_package_signing_keys('') - - keys = ['apache', 'datastax'] - - self.assertEqual(check_call.call_count, len(keys)) - - for k in keys: - with self.subTest(key=k): - path = os.path.join(hookenv.charm_dir(), - 'lib', '{}.key'.format(k)) - self.assertTrue(os.path.exists(path)) - check_call.assert_any_call(['apt-key', 'add', path], - stdin=subprocess.DEVNULL) - - @patch('charmhelpers.core.host.write_file') - @patch('subprocess.check_call') - def test_reset_sysctl(self, check_call, write_file): - actions.reset_sysctl('') - - ctl_file = '/etc/sysctl.d/99-cassandra.conf' - # Magic value per Cassandra best practice. - write_file.assert_called_once_with(ctl_file, - b"vm.max_map_count = 131072\n") - check_call.assert_called_once_with(['sysctl', '-p', - '/etc/sysctl.d/99-cassandra.conf']) - - @patch('subprocess.check_call') - @patch('charmhelpers.core.host.write_file') - def test_reset_sysctl_expected_fails(self, write_file, check_call): - check_call.side_effect = repeat(OSError(errno.EACCES, - 'Permission Denied')) - actions.reset_sysctl('') - # A warning is generated if permission denied was raised. - hookenv.log.assert_any_call(ANY, hookenv.WARNING) - - @patch('subprocess.check_call') - @patch('charmhelpers.core.host.write_file') - def test_reset_sysctl_fails_badly(self, write_file, check_call): - # Other OSErrors are reraised since we don't know how to handle - # them. - check_call.side_effect = repeat(OSError(errno.EFAULT, 'Whoops')) - self.assertRaises(OSError, actions.reset_sysctl, '') - - @patch('subprocess.check_call') - def test_reset_sysctl_lxc(self, check_call): - helpers.is_lxc.return_value = True - actions.reset_sysctl('') - self.assertFalse(check_call.called) - hookenv.log.assert_any_call('In an LXC. ' - 'Leaving sysctl unchanged.') - - @patch('helpers.get_cassandra_packages') - @patch('helpers.ensure_package_status') - def test_ensure_cassandra_package_status(self, ensure_package_status, - get_cassandra_packages): - get_cassandra_packages.return_value = sentinel.cassandra_packages - actions.ensure_cassandra_package_status('') - ensure_package_status.assert_called_once_with( - sentinel.cassandra_packages) - - @patch('subprocess.check_call') - @patch('helpers.get_jre') - @patch('helpers.get_cassandra_packages') - @patch('helpers.install_packages') - def test_install_cassandra_packages(self, install_packages, - get_cassandra_packages, - get_jre, check_call): - get_cassandra_packages.return_value = sentinel.cassandra_packages - get_jre.return_value = 'openjdk' - actions.install_cassandra_packages('') - install_packages.assert_called_once_with(sentinel.cassandra_packages) - check_call.assert_called_once_with(['update-java-alternatives', - '--jre-headless', '--set', - 'java-1.8.0-openjdk-amd64']) - - @patch('subprocess.check_call') - @patch('helpers.get_jre') - @patch('helpers.get_cassandra_packages') - @patch('helpers.install_packages') - def test_install_cassandra_packages_oracle(self, install_packages, - get_cassandra_packages, - get_jre, check_call): - get_cassandra_packages.return_value = sentinel.cassandra_packages - get_jre.return_value = 'oracle' - actions.install_cassandra_packages('') - install_packages.assert_called_once_with(sentinel.cassandra_packages) - # No alternatives selected, as the Oracle JRE installer method - # handles this. - self.assertFalse(check_call.called) - - @patch('actions._install_oracle_jre_tarball') - @patch('actions._fetch_oracle_jre') - def test_install_oracle_jre(self, fetch, install_tarball): - fetch.return_value = sentinel.tarball - - actions.install_oracle_jre('') - self.assertFalse(fetch.called) - self.assertFalse(install_tarball.called) - - hookenv.config()['jre'] = 'oracle' - actions.install_oracle_jre('') - fetch.assert_called_once_with() - install_tarball.assert_called_once_with(sentinel.tarball) - - @patch('helpers.status_set') - @patch('urllib.request') - def test_fetch_oracle_jre(self, req, status_set): - config = hookenv.config() - url = 'https://foo.example.com/server-jre-7u42-linux-x64.tar.gz' - expected_tarball = os.path.join(hookenv.charm_dir(), 'lib', - 'server-jre-7u42-linux-x64.tar.gz') - config['private_jre_url'] = url - - # Create a dummy tarball, since the mock urlretrieve won't. - os.makedirs(os.path.dirname(expected_tarball)) - with open(expected_tarball, 'w'): - pass # Empty file - - self.assertEqual(actions._fetch_oracle_jre(), expected_tarball) - req.urlretrieve.assert_called_once_with(url, expected_tarball) - - def test_fetch_oracle_jre_local(self): - # Create an existing tarball. If it is found, it will be used - # without needing to specify a remote url or actually download - # anything. - expected_tarball = os.path.join(hookenv.charm_dir(), 'lib', - 'server-jre-7u42-linux-x64.tar.gz') - os.makedirs(os.path.dirname(expected_tarball)) - with open(expected_tarball, 'w'): - pass # Empty file - - self.assertEqual(actions._fetch_oracle_jre(), expected_tarball) - - @patch('helpers.status_set') - def test_fetch_oracle_jre_notfound(self, status_set): - with self.assertRaises(SystemExit) as x: - actions._fetch_oracle_jre() - self.assertEqual(x.code, 0) - status_set.assert_called_once_with('blocked', ANY) - - @patch('subprocess.check_call') - @patch('charmhelpers.core.host.mkdir') - @patch('os.path.isdir') - def test_install_oracle_jre_tarball(self, isdir, mkdir, check_call): - isdir.return_value = False - - dest = '/usr/lib/jvm/java-8-oracle' - - actions._install_oracle_jre_tarball(sentinel.tarball) - mkdir.assert_called_once_with(dest) - check_call.assert_has_calls([ - call(['tar', '-xz', '-C', dest, - '--strip-components=1', '-f', sentinel.tarball]), - call(['update-alternatives', '--install', - '/usr/bin/java', 'java', - os.path.join(dest, 'bin', 'java'), '1']), - call(['update-alternatives', '--set', 'java', - os.path.join(dest, 'bin', 'java')]), - call(['update-alternatives', '--install', - '/usr/bin/javac', 'javac', - os.path.join(dest, 'bin', 'javac'), '1']), - call(['update-alternatives', '--set', 'javac', - os.path.join(dest, 'bin', 'javac')])]) - - @patch('os.path.exists') - @patch('subprocess.check_call') - @patch('charmhelpers.core.host.mkdir') - @patch('os.path.isdir') - def test_install_oracle_jre_tarball_already(self, isdir, - mkdir, check_call, exists): - isdir.return_value = True - exists.return_value = True # jre already installed - - # Store the version previously installed. - hookenv.config()['oracle_jre_tarball'] = sentinel.tarball - - dest = '/usr/lib/jvm/java-8-oracle' - - actions._install_oracle_jre_tarball(sentinel.tarball) - - self.assertFalse(mkdir.called) # The jvm dir already existed. - - exists.assert_called_once_with('/usr/lib/jvm/java-8-oracle/bin/java') - - # update-alternatives done, but tarball not extracted. - check_call.assert_has_calls([ - call(['update-alternatives', '--install', - '/usr/bin/java', 'java', - os.path.join(dest, 'bin', 'java'), '1']), - call(['update-alternatives', '--set', 'java', - os.path.join(dest, 'bin', 'java')]), - call(['update-alternatives', '--install', - '/usr/bin/javac', 'javac', - os.path.join(dest, 'bin', 'javac'), '1']), - call(['update-alternatives', '--set', 'javac', - os.path.join(dest, 'bin', 'javac')])]) - - @patch('subprocess.check_output') - def test_emit_java_version(self, check_output): - check_output.return_value = 'Line 1\nLine 2' - actions.emit_java_version('') - check_output.assert_called_once_with(['java', '-version'], - universal_newlines=True) - hookenv.log.assert_has_calls([call(ANY), - call('JRE: Line 1'), - call('JRE: Line 2')]) - - @patch('helpers.configure_cassandra_yaml') - def test_configure_cassandra_yaml(self, configure_cassandra_yaml): - # actions.configure_cassandra_yaml is just a wrapper around the - # helper. - actions.configure_cassandra_yaml('') - configure_cassandra_yaml.assert_called_once_with() - - @patch('helpers.get_cassandra_env_file') - @patch('charmhelpers.core.host.write_file') - def test_configure_cassandra_env(self, write_file, env_file): - def _wf(path, contents, perms=None): - with open(path, 'wb') as f: - f.write(contents) - write_file.side_effect = _wf - - # cassandra-env.sh is a shell script that unfortunately - # embeds configuration we need to change. - existing_config = dedent('''\ - Everything is ignored - unless a regexp matches - #MAX_HEAP_SIZE="1G" - #HEAP_NEWSIZE="800M" - #JMX_PORT="1234" - And done - ''') - - with tempfile.TemporaryDirectory() as tempdir: - cassandra_env = os.path.join(tempdir, 'c.sh') - env_file.return_value = cassandra_env - - with open(cassandra_env, 'w', encoding='UTF-8') as f: - f.write(existing_config) - - overrides = dict( - max_heap_size=re.compile('^MAX_HEAP_SIZE=(.*)$', re.M), - heap_newsize=re.compile('^HEAP_NEWSIZE=(.*)$', re.M)) - - for key in overrides: - hookenv.config()[key] = '' - - # By default, the settings will be commented out. - actions.configure_cassandra_env('') - with open(cassandra_env, 'r', encoding='UTF-8') as f: - generated_env = f.read() - for config_key, regexp in overrides.items(): - with self.subTest(override=config_key): - self.assertIsNone(regexp.search(generated_env)) - - # Settings can be overridden. - for config_key, regexp in overrides.items(): - hookenv.config()[config_key] = '{} val'.format(config_key) - actions.configure_cassandra_env('') - with open(cassandra_env, 'r') as f: - generated_env = f.read() - for config_key, regexp in overrides.items(): - with self.subTest(override=config_key): - match = regexp.search(generated_env) - self.assertIsNotNone(match) - # Note the value has been shell quoted. - self.assertTrue( - match.group(1).startswith( - "'{} val'".format(config_key))) - - # Settings can be returned to the defaults. - for config_key, regexp in overrides.items(): - hookenv.config()[config_key] = '' - actions.configure_cassandra_env('') - with open(cassandra_env, 'r', encoding='UTF-8') as f: - generated_env = f.read() - for config_key, regexp in overrides.items(): - with self.subTest(override=config_key): - self.assertIsNone(regexp.search(generated_env)) - - @patch('helpers.get_cassandra_rackdc_file') - def test_configure_cassandra_rackdc(self, rackdc_file): - hookenv.config()['datacenter'] = 'test_dc' - hookenv.config()['rack'] = 'test_rack' - with tempfile.NamedTemporaryFile() as rackdc: - rackdc_file.return_value = rackdc.name - actions.configure_cassandra_rackdc('') - with open(rackdc.name, 'r') as f: - self.assertEqual(f.read().strip(), - 'dc=test_dc\nrack=test_rack') - - @patch('helpers.connect') - @patch('helpers.get_auth_keyspace_replication') - @patch('helpers.num_nodes') - def test_needs_reset_auth_keyspace_replication(self, num_nodes, - get_auth_ks_rep, - connect): - num_nodes.return_value = 4 - connect().__enter__.return_value = sentinel.session - connect().__exit__.return_value = False - get_auth_ks_rep.return_value = {'another': '8'} - self.assertTrue(actions.needs_reset_auth_keyspace_replication()) - - @patch('helpers.connect') - @patch('helpers.get_auth_keyspace_replication') - @patch('helpers.num_nodes') - def test_needs_reset_auth_keyspace_replication_false(self, num_nodes, - get_auth_ks_rep, - connect): - config = hookenv.config() - config['datacenter'] = 'mydc' - connect().__enter__.return_value = sentinel.session - connect().__exit__.return_value = False - - num_nodes.return_value = 3 - get_auth_ks_rep.return_value = {'another': '8', - 'mydc': '3'} - self.assertFalse(actions.needs_reset_auth_keyspace_replication()) - - @patch('helpers.set_active') - @patch('helpers.repair_auth_keyspace') - @patch('helpers.connect') - @patch('helpers.set_auth_keyspace_replication') - @patch('helpers.get_auth_keyspace_replication') - @patch('helpers.num_nodes') - @patch('charmhelpers.core.hookenv.is_leader') - def test_reset_auth_keyspace_replication(self, is_leader, num_nodes, - get_auth_ks_rep, - set_auth_ks_rep, - connect, repair, set_active): - is_leader.return_value = True - num_nodes.return_value = 4 - coordinator.grants = {} - coordinator.requests = {hookenv.local_unit(): {}} - coordinator.grant('repair', hookenv.local_unit()) - config = hookenv.config() - config['datacenter'] = 'mydc' - connect().__enter__.return_value = sentinel.session - connect().__exit__.return_value = False - get_auth_ks_rep.return_value = {'another': '8'} - self.assertTrue(actions.needs_reset_auth_keyspace_replication()) - actions.reset_auth_keyspace_replication('') - set_auth_ks_rep.assert_called_once_with( - sentinel.session, - {'class': 'NetworkTopologyStrategy', 'another': '8', 'mydc': 4}) - repair.assert_called_once_with() - set_active.assert_called_once_with() - - def test_store_unit_private_ip(self): - hookenv.unit_private_ip.side_effect = None - hookenv.unit_private_ip.return_value = sentinel.ip - actions.store_unit_private_ip('') - self.assertEqual(hookenv.config()['unit_private_ip'], sentinel.ip) - - @patch('charmhelpers.core.host.service_start') - @patch('helpers.status_set') - @patch('helpers.actual_seed_ips') - @patch('helpers.get_seed_ips') - @patch('relations.StorageRelation.needs_remount') - @patch('helpers.is_bootstrapped') - @patch('helpers.is_cassandra_running') - @patch('helpers.is_decommissioned') - def test_needs_restart(self, is_decom, is_running, is_bootstrapped, - needs_remount, seed_ips, actual_seeds, - status_set, service_start): - is_decom.return_value = False - is_running.return_value = True - needs_remount.return_value = False - seed_ips.return_value = set(['1.2.3.4']) - actual_seeds.return_value = set(['1.2.3.4']) - - config = hookenv.config() - config['configured_seeds'] = list(sorted(seed_ips())) - config.save() - config.load_previous() # Ensure everything flagged as unchanged. - - self.assertFalse(actions.needs_restart()) - - # Decommissioned nodes are not restarted. - is_decom.return_value = True - self.assertFalse(actions.needs_restart()) - is_decom.return_value = False - self.assertFalse(actions.needs_restart()) - - # Nodes not running need to be restarted. - is_running.return_value = False - self.assertTrue(actions.needs_restart()) - is_running.return_value = True - self.assertFalse(actions.needs_restart()) - - # If we have a new mountpoint, we need to restart in order to - # migrate data. - needs_remount.return_value = True - self.assertTrue(actions.needs_restart()) - needs_remount.return_value = False - self.assertFalse(actions.needs_restart()) - - # Certain changed config items trigger a restart. - config['max_heap_size'] = '512M' - self.assertTrue(actions.needs_restart()) - config.save() - config.load_previous() - self.assertFalse(actions.needs_restart()) - - # A new IP address requires a restart. - config['unit_private_ip'] = 'new' - self.assertTrue(actions.needs_restart()) - config.save() - config.load_previous() - self.assertFalse(actions.needs_restart()) - - # If the seeds have changed, we need to restart. - seed_ips.return_value = set(['9.8.7.6']) - actual_seeds.return_value = set(['9.8.7.6']) - self.assertTrue(actions.needs_restart()) - is_running.side_effect = iter([False, True]) - helpers.start_cassandra() - is_running.side_effect = None - is_running.return_value = True - self.assertFalse(actions.needs_restart()) - - @patch('charmhelpers.core.hookenv.is_leader') - @patch('helpers.is_bootstrapped') - @patch('helpers.ensure_database_directories') - @patch('helpers.remount_cassandra') - @patch('helpers.start_cassandra') - @patch('helpers.stop_cassandra') - @patch('helpers.status_set') - def test_maybe_restart(self, status_set, stop_cassandra, start_cassandra, - remount, ensure_directories, is_bootstrapped, - is_leader): - coordinator.grants = {} - coordinator.requests = {hookenv.local_unit(): {}} - coordinator.relid = 'cluster:1' - coordinator.grant('restart', hookenv.local_unit()) - actions.maybe_restart('') - stop_cassandra.assert_called_once_with() - remount.assert_called_once_with() - ensure_directories.assert_called_once_with() - start_cassandra.assert_called_once_with() - - @patch('helpers.stop_cassandra') - def test_stop_cassandra(self, helpers_stop_cassandra): - actions.stop_cassandra('ignored') - helpers_stop_cassandra.assert_called_once_with() - - @patch('helpers.start_cassandra') - def test_start_cassandra(self, helpers_start_cassandra): - actions.start_cassandra('ignored') - helpers_start_cassandra.assert_called_once_with() - - @patch('os.path.isdir') - @patch('helpers.get_all_database_directories') - @patch('helpers.set_io_scheduler') - def test_reset_all_io_schedulers(self, set_io_scheduler, dbdirs, isdir): - hookenv.config()['io_scheduler'] = sentinel.io_scheduler - dbdirs.return_value = dict( - data_file_directories=[sentinel.d1, sentinel.d2], - commitlog_directory=sentinel.cl, - saved_caches_directory=sentinel.sc) - isdir.return_value = True - actions.reset_all_io_schedulers('') - set_io_scheduler.assert_has_calls([ - call(sentinel.io_scheduler, sentinel.d1), - call(sentinel.io_scheduler, sentinel.d2), - call(sentinel.io_scheduler, sentinel.cl), - call(sentinel.io_scheduler, sentinel.sc)], - any_order=True) - - # If directories don't exist yet, nothing happens. - set_io_scheduler.reset_mock() - isdir.return_value = False - actions.reset_all_io_schedulers('') - self.assertFalse(set_io_scheduler.called) - - def test_config_key_lists_complete(self): - # Ensure that we have listed all keys in either - # RESTART_REQUIRED_KEYS, RESTART_NOT_REQUIRED_KEYS or - # UNCHANGEABLE_KEYS. This is to ensure that RESTART_REQUIRED_KEYS - # is maintained as new config items are added over time. - config_path = os.path.join(os.path.dirname(__file__), os.pardir, - 'config.yaml') - with open(config_path, 'r') as f: - config = yaml.safe_load(f) - - combined = actions.RESTART_REQUIRED_KEYS.union( - actions.RESTART_NOT_REQUIRED_KEYS).union( - actions.UNCHANGEABLE_KEYS) - - for key in config['options']: - with self.subTest(key=key): - self.assertIn(key, combined) - - @patch('actions._publish_database_relation') - def test_publish_database_relations(self, publish_db_rel): - actions.publish_database_relations('') - publish_db_rel.assert_called_once_with('database:1', superuser=False) - - @patch('actions._publish_database_relation') - def test_publish_database_admin_relations(self, publish_db_rel): - actions.publish_database_admin_relations('') - publish_db_rel.assert_called_once_with('database-admin:1', - superuser=True) - - @patch('helpers.leader_ping') - @patch('helpers.ensure_user') - @patch('helpers.connect') - @patch('helpers.get_service_name') - @patch('helpers.encrypt_password') - @patch('charmhelpers.core.host.pwgen') - @patch('charmhelpers.core.hookenv.is_leader') - @patch('actions._client_credentials') - def test_publish_database_relation_leader(self, client_creds, is_leader, - pwgen, encrypt_password, - get_service_name, - connect, ensure_user, - leader_ping): - is_leader.return_value = True # We are the leader. - client_creds.return_value = (None, None) # No creds published yet. - - get_service_name.return_value = 'cservice' - pwgen.side_effect = iter(['secret1', 'secret2']) - encrypt_password.side_effect = iter(['crypt1', 'crypt2']) - connect().__enter__.return_value = sentinel.session - - config = hookenv.config() - config['native_transport_port'] = 666 - config['rpc_port'] = 777 - config['cluster_name'] = 'fred' - config['datacenter'] = 'mission_control' - config['rack'] = '01' - - actions._publish_database_relation('database:1', superuser=False) - - ensure_user.assert_called_once_with(sentinel.session, - 'juju_cservice', 'crypt1', - False) - leader_ping.assert_called_once_with() # Peers woken. - - hookenv.relation_set.assert_has_calls([ - call('database:1', - username='juju_cservice', password='secret1', - host='10.30.0.1', native_transport_port=666, rpc_port=777, - cluster_name='fred', datacenter='mission_control', - rack='01')]) - - @patch('helpers.leader_ping') - @patch('helpers.ensure_user') - @patch('helpers.connect') - @patch('helpers.get_service_name') - @patch('helpers.encrypt_password') - @patch('charmhelpers.core.host.pwgen') - @patch('charmhelpers.core.hookenv.is_leader') - @patch('actions._client_credentials') - def test_publish_database_relation_super(self, client_creds, is_leader, - pwgen, encrypt_password, - get_service_name, - connect, ensure_user, - leader_ping): - is_leader.return_value = True # We are the leader. - client_creds.return_value = (None, None) # No creds published yet. - - get_service_name.return_value = 'cservice' - pwgen.side_effect = iter(['secret1', 'secret2']) - encrypt_password.side_effect = iter(['crypt1', 'crypt2']) - connect().__enter__.return_value = sentinel.session - - config = hookenv.config() - config['native_transport_port'] = 666 - config['rpc_port'] = 777 - config['cluster_name'] = 'fred' - config['datacenter'] = 'mission_control' - config['rack'] = '01' - - actions._publish_database_relation('database:1', superuser=True) - - ensure_user.assert_called_once_with(sentinel.session, - 'juju_cservice_admin', 'crypt1', - True) - - @patch('charmhelpers.core.host.write_file') - def test_install_maintenance_crontab(self, write_file): - # First 7 units get distributed, one job per day. - hookenv.local_unit.return_value = 'foo/0' - actions.install_maintenance_crontab('') - write_file.assert_called_once_with('/etc/cron.d/cassandra-maintenance', - ANY) - contents = write_file.call_args[0][1] - # Not the complete command, but includes all the expanded - # variables. - expected = (b'\n0 0 * * 0 cassandra run-one-until-success ' - b'nodetool repair -pr') - self.assertIn(expected, contents) - - # Next 7 units distributed 12 hours out of sync with the first - # batch. - hookenv.local_unit.return_value = 'foo/8' - actions.install_maintenance_crontab('') - contents = write_file.call_args[0][1] - expected = (b'\n0 12 * * 1 cassandra run-one-until-success ' - b'nodetool repair -pr') - self.assertIn(expected, contents) - - # Later units per helpers.week_spread() - hookenv.local_unit.return_value = 'foo/411' - actions.install_maintenance_crontab('') - contents = write_file.call_args[0][1] - expected = (b'\n37 8 * * 5 cassandra run-one-until-success ' - b'nodetool repair -pr') - self.assertIn(expected, contents) - - @patch('helpers.emit_netstats') - @patch('helpers.emit_status') - @patch('helpers.emit_describe_cluster') - def test_emit_cluster_info(self, emit_desc, emit_status, emit_netstats): - actions.emit_cluster_info('') - emit_desc.assert_called_once_with() - emit_status.assert_called_once_with() - emit_netstats.assert_called_once_with() - - @patch('charmhelpers.core.hookenv.relations_of_type') - @patch('actions.ufw') - def test_configure_firewall(self, ufw, rel_of_type): - rel_of_type.side_effect = iter([[{'private-address': '1.1.0.1'}, - {'private-address': '1.1.0.2'}], - []]) - actions.configure_firewall('') - - # Confirm our mock provided the expected data. - rel_of_type.assert_has_calls([call('cluster'), call('database-admin')]) - - ufw.enable.assert_called_once_with(soft_fail=True) # Always enabled. - - # SSH and the client protocol ports are always fully open. - ufw.service.assert_has_calls([call('ssh', 'open'), - call('nrpe', 'open'), - call('rsync', 'open'), - call(9042, 'open'), - call(9160, 'open')]) - - # This test is running for the first time, so there are no - # previously applied rules to remove. It opens necessary access - # to peers and other related units. The 1.1.* addresses are - # peers, and they get storage (7000), ssl_storage (7001), - # JMX (7199), Thrift (9160) and native (9042). The remaining - # addresses are clients, getting just Thrift and native. - ufw.grant_access.assert_has_calls([call('1.1.0.1', 'any', 7000), - call('1.1.0.1', 'any', 7001), - - call('1.1.0.2', 'any', 7000), - call('1.1.0.2', 'any', 7001)], - any_order=True) - - # If things change in a later hook, unwanted rules are removed - # and new ones added. - config = hookenv.config() - config.save() - config.load_previous() - config['native_transport_port'] = 7777 # 9042 -> 7777 - config['storage_port'] = 7002 # 7000 -> 7002 - config['open_client_ports'] = True - ufw.reset_mock() - - rel_of_type.side_effect = iter([[], - [{'private-address': '1.1.0.1'}, - {'private-address': '1.1.0.2'}]]) - actions.configure_firewall('') - - # Three ports now globally open. Yes, having the globally open - # native and Thrift ports does make the later more specific - # rules meaningless, but we add the specific rules anyway. - ufw.service.assert_has_calls([call('ssh', 'open'), - call('nrpe', 'open'), - call(9042, 'close'), - call(7777, 'open'), - call(9160, 'open')], any_order=True) - ufw.revoke_access.assert_has_calls([call('1.1.0.1', 'any', 7000), - call('1.1.0.2', 'any', 7000)], - any_order=True) - ufw.grant_access.assert_has_calls([call('1.1.0.1', 'any', 7001), - call('1.1.0.1', 'any', 7002), - call('1.1.0.2', 'any', 7001), - call('1.1.0.2', 'any', 7002)], - any_order=True) - - @patch('helpers.mountpoint') - @patch('helpers.get_cassandra_version') - @patch('charmhelpers.core.host.write_file') - @patch('charmhelpers.contrib.charmsupport.nrpe.NRPE') - @patch('helpers.local_plugins_dir') - def test_nrpe_external_master_relation(self, local_plugins_dir, nrpe, - write_file, cassandra_version, - mountpoint): - mountpoint.side_effect = os.path.dirname - cassandra_version.return_value = '2.2' - # The fake charm_dir() needs populating. - plugin_src_dir = os.path.join(os.path.dirname(__file__), - os.pardir, 'files') - shutil.copytree(plugin_src_dir, - os.path.join(hookenv.charm_dir(), 'files')) - - with tempfile.TemporaryDirectory() as d: - local_plugins_dir.return_value = d - actions.nrpe_external_master_relation('') - - # The expected file was written to the expected filename - # with required perms. - with open(os.path.join(plugin_src_dir, 'check_cassandra_heap.sh'), - 'rb') as f: - write_file.assert_called_once_with( - os.path.join(d, 'check_cassandra_heap.sh'), f.read(), - perms=0o555) - - nrpe().add_check.assert_has_calls([ - call(shortname='cassandra_heap', - description='Check Cassandra Heap', - check_cmd='check_cassandra_heap.sh localhost 80 90'), - call(description=('Check Cassandra Disk ' - '/var/lib/cassandra'), - shortname='cassandra_disk_var_lib_cassandra', - check_cmd=('check_disk -u GB -w 50% -c 25% -K 5% ' - '-p /var/lib/cassandra'))], - any_order=True) - - nrpe().write.assert_called_once_with() - - @patch('helpers.get_cassandra_version') - @patch('charmhelpers.core.host.write_file') - @patch('os.path.exists') - @patch('charmhelpers.contrib.charmsupport.nrpe.NRPE') - def test_nrpe_external_master_relation_no_local(self, nrpe, exists, - write_file, ver): - ver.return_value = '2.2' - # If the local plugins directory doesn't exist, we don't attempt - # to write files to it. Wait until the subordinate has set it - # up. - exists.return_value = False - actions.nrpe_external_master_relation('') - self.assertFalse(write_file.called) - - @patch('helpers.mountpoint') - @patch('helpers.get_cassandra_version') - @patch('os.path.exists') - @patch('charmhelpers.contrib.charmsupport.nrpe.NRPE') - def test_nrpe_external_master_relation_disable_heapchk(self, nrpe, exists, - ver, mountpoint): - ver.return_value = '2.2' - exists.return_value = False - mountpoint.side_effect = os.path.dirname - - # Disable our checks - config = hookenv.config() - config['nagios_heapchk_warn_pct'] = 0 # Only one needs to be disabled. - config['nagios_heapchk_crit_pct'] = 90 - - actions.nrpe_external_master_relation('') - exists.assert_called_once_with(helpers.local_plugins_dir()) - - nrpe().add_check.assert_has_calls([ - call(shortname='cassandra_disk_var_lib_cassandra', - description=ANY, check_cmd=ANY)], any_order=True) - - @patch('helpers.get_cassandra_version') - @patch('os.path.exists') - @patch('charmhelpers.contrib.charmsupport.nrpe.NRPE') - def test_nrpe_external_master_relation_disable_diskchk(self, nrpe, - exists, ver): - ver.return_value = '2.2' - exists.return_value = False - - # Disable our checks - config = hookenv.config() - config['nagios_disk_warn_pct'] = 0 # Only one needs to be disabled. - config['magios_disk_crit_pct'] = 50 - - actions.nrpe_external_master_relation('') - exists.assert_called_once_with(helpers.local_plugins_dir()) - - nrpe().add_check.assert_called_once_with(shortname='cassandra_heap', - description=ANY, - check_cmd=ANY) - - @patch('helpers.get_bootstrapped_ips') - @patch('helpers.get_seed_ips') - @patch('charmhelpers.core.hookenv.leader_set') - @patch('charmhelpers.core.hookenv.is_leader') - def test_maintain_seeds(self, is_leader, leader_set, - seed_ips, bootstrapped_ips): - is_leader.return_value = True - - seed_ips.return_value = set(['1.2.3.4']) - bootstrapped_ips.return_value = set(['2.2.3.4', '3.2.3.4', - '4.2.3.4', '5.2.3.4']) - - actions.maintain_seeds('') - leader_set.assert_called_once_with(seeds='2.2.3.4,3.2.3.4,4.2.3.4') - - @patch('helpers.get_bootstrapped_ips') - @patch('helpers.get_seed_ips') - @patch('charmhelpers.core.hookenv.leader_set') - @patch('charmhelpers.core.hookenv.is_leader') - def test_maintain_seeds_start(self, is_leader, leader_set, - seed_ips, bootstrapped_ips): - seed_ips.return_value = set() - bootstrapped_ips.return_value = set() - actions.maintain_seeds('') - # First seed is the first leader, which lets is get everything - # started. - leader_set.assert_called_once_with(seeds=hookenv.unit_private_ip()) - - @patch('charmhelpers.core.host.pwgen') - @patch('helpers.query') - @patch('helpers.set_unit_superusers') - @patch('helpers.ensure_user') - @patch('helpers.encrypt_password') - @patch('helpers.superuser_credentials') - @patch('helpers.connect') - @patch('charmhelpers.core.hookenv.is_leader') - @patch('charmhelpers.core.hookenv.leader_set') - @patch('charmhelpers.core.hookenv.leader_get') - def test_reset_default_password(self, leader_get, leader_set, is_leader, - connect, sup_creds, encrypt_password, - ensure_user, set_sups, query, pwgen): - is_leader.return_value = True - leader_get.return_value = None - connect().__enter__.return_value = sentinel.session - connect().__exit__.return_value = False - connect.reset_mock() - - sup_creds.return_value = (sentinel.username, sentinel.password) - encrypt_password.return_value = sentinel.pwhash - pwgen.return_value = sentinel.random_password - - actions.reset_default_password('') - - # First, a superuser account for the unit was created. - connect.assert_called_once_with('cassandra', 'cassandra', - timeout=120, auth_timeout=120) - encrypt_password.assert_called_once_with(sentinel.password) - ensure_user.assert_called_once_with(sentinel.session, - sentinel.username, - sentinel.pwhash, - superuser=True) - set_sups.assert_called_once_with([hookenv.local_unit()]) - - # After that, the default password is reset. - query.assert_called_once_with(sentinel.session, - 'ALTER USER cassandra WITH PASSWORD %s', - cassandra.ConsistencyLevel.ALL, - (sentinel.random_password,)) - - # Flag stored to avoid attempting this again. - leader_set.assert_called_once_with(default_admin_password_changed=True) - - @patch('helpers.connect') - @patch('charmhelpers.core.hookenv.is_leader') - @patch('charmhelpers.core.hookenv.leader_get') - def test_reset_default_password_noop(self, leader_get, is_leader, connect): - leader_get.return_value = True - is_leader.return_value = True - actions.reset_default_password('') # noop - self.assertFalse(connect.called) - - @patch('helpers.get_seed_ips') - @patch('helpers.status_set') - @patch('charmhelpers.core.hookenv.status_get') - @patch('charmhelpers.core.hookenv.is_leader') - def test_set_active(self, is_leader, status_get, status_set, seed_ips): - is_leader.return_value = False - status_get.return_value = ('waiting', '') - seed_ips.return_value = set() - actions.set_active('') - status_set.assert_called_once_with('active', 'Live node') - - @patch('helpers.get_seed_ips') - @patch('helpers.status_set') - @patch('charmhelpers.core.hookenv.status_get') - @patch('charmhelpers.core.hookenv.is_leader') - def test_set_active_seed(self, is_leader, - status_get, status_set, seed_ips): - is_leader.return_value = False - status_get.return_value = ('waiting', '') - seed_ips.return_value = set([hookenv.unit_private_ip()]) - actions.set_active('') - status_set.assert_called_once_with('active', 'Live seed') - - @patch('helpers.num_nodes') - @patch('helpers.get_seed_ips') - @patch('helpers.service_status_set') - @patch('helpers.status_set') - @patch('charmhelpers.core.hookenv.status_get') - @patch('charmhelpers.core.hookenv.is_leader') - def test_set_active_service(self, is_leader, - status_get, status_set, service_status_set, - seed_ips, num_nodes): - status_get.return_value = ('waiting', '') - is_leader.return_value = True - seed_ips.return_value = set([hookenv.unit_private_ip()]) - num_nodes.return_value = 1 - actions.set_active('') - service_status_set.assert_called_once_with('active', - 'Single node cluster') - - service_status_set.reset_mock() - num_nodes.return_value = 6 - actions.set_active('') - service_status_set.assert_called_once_with('active', - '6 node cluster') - - @patch('helpers.encrypt_password') - @patch('helpers.superuser_credentials') - @patch('helpers.peer_relid') - def test_request_unit_superuser(self, peer_relid, sup_creds, crypt): - peer_relid.return_value = sentinel.peer_relid - sup_creds.return_value = (sentinel.username, sentinel.password) - crypt.return_value = sentinel.pwhash - hookenv.relation_get.return_value = dict() - actions.request_unit_superuser('') - hookenv.relation_set.assert_called_once_with( - sentinel.peer_relid, - username=sentinel.username, pwhash=sentinel.pwhash) - - @patch('helpers.update_hosts_file') - @patch('socket.gethostname') - def test_update_etc_hosts(self, gethostname, update_hosts_file): - gethostname.return_value = sentinel.hostname - actions.update_etc_hosts('') - update_hosts_file.assert_called_once_with( - '/etc/hosts', {'10.20.0.1': sentinel.hostname}) - - -if __name__ == '__main__': - unittest.main(verbosity=2) diff --git a/charms/trusty/cassandra/tests/test_definitions.py b/charms/trusty/cassandra/tests/test_definitions.py deleted file mode 100755 index 98103c0..0000000 --- a/charms/trusty/cassandra/tests/test_definitions.py +++ /dev/null @@ -1,104 +0,0 @@ -#!.venv3/bin/python3 - -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -from itertools import chain -import functools -import unittest -from unittest.mock import patch - -from charmhelpers.core import hookenv -from charmhelpers.core.services import ServiceManager - -from tests.base import TestCaseBase - -import definitions - - -patch = functools.partial(patch, autospec=True) - - -class TestDefinitions(TestCaseBase): - def test_get_service_definitions(self): - # We can't really test this in unit tests, but at least we can - # ensure the basic data structure is returned and accepted. - defs = definitions.get_service_definitions() - self.assertIsInstance(defs, list) - for d in defs: - with self.subTest(d=d): - self.assertIsInstance(d, dict) - - def test_get_service_definitions_open_ports(self): - config = hookenv.config() - defs = definitions.get_service_definitions() - expected_ports = set([config['rpc_port'], - config['native_transport_port'], - config['storage_port'], - config['ssl_storage_port']]) - opened_ports = set(chain(*(d.get('ports', []) for d in defs))) - self.assertSetEqual(opened_ports, expected_ports) - - def test_get_service_manager(self): - self.assertIsInstance(definitions.get_service_manager(), - ServiceManager) - - @patch('helpers.get_unit_superusers') - @patch('helpers.is_decommissioned') - @patch('helpers.is_cassandra_running') - def test_requires_live_node(self, is_running, is_decommissioned, get_sup): - is_decommissioned.return_value = False # Is not decommissioned. - is_running.return_value = True # Is running. - get_sup.return_value = set([hookenv.local_unit()]) # Creds exist. - - self.assertTrue(bool(definitions.RequiresLiveNode())) - - @patch('helpers.get_unit_superusers') - @patch('helpers.is_decommissioned') - @patch('helpers.is_cassandra_running') - def test_requires_live_node_decommissioned(self, is_running, - is_decommissioned, get_sup): - is_decommissioned.return_value = True # Is decommissioned. - is_running.return_value = True # Is running. - get_sup.return_value = set([hookenv.local_unit()]) # Creds exist. - - self.assertFalse(bool(definitions.RequiresLiveNode())) - - @patch('helpers.get_unit_superusers') - @patch('helpers.is_decommissioned') - @patch('helpers.is_cassandra_running') - def test_requires_live_node_down(self, is_running, - is_decommissioned, get_sup): - is_decommissioned.return_value = False # Is not decommissioned. - is_running.return_value = False # Is not running. - get_sup.return_value = set([hookenv.local_unit()]) # Creds exist. - - self.assertFalse(bool(definitions.RequiresLiveNode())) - - @patch('helpers.get_unit_superusers') - @patch('helpers.is_decommissioned') - @patch('helpers.is_cassandra_running') - def test_requires_live_node_creds(self, is_running, - is_decommissioned, get_sup): - is_decommissioned.return_value = False # Is not decommissioned. - is_running.return_value = True # Is running. - get_sup.return_value = set() # Creds do not exist. - - self.assertFalse(bool(definitions.RequiresLiveNode())) - - -if __name__ == '__main__': - unittest.main(verbosity=2) diff --git a/charms/trusty/cassandra/tests/test_helpers.py b/charms/trusty/cassandra/tests/test_helpers.py deleted file mode 100755 index 92fa1e8..0000000 --- a/charms/trusty/cassandra/tests/test_helpers.py +++ /dev/null @@ -1,1466 +0,0 @@ -#!.venv3/bin/python3 - -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -from collections import namedtuple -import errno -import functools -from itertools import repeat -import os.path -import subprocess -import tempfile -from textwrap import dedent -import unittest -from unittest.mock import ANY, call, MagicMock, patch, sentinel - -from cassandra import AuthenticationFailed, ConsistencyLevel -from cassandra.cluster import NoHostAvailable -import yaml - -from charmhelpers import fetch -from charmhelpers.core import hookenv, host - -from tests.base import TestCaseBase -import helpers - - -patch = functools.partial(patch, autospec=True) - - -class TestHelpers(TestCaseBase): - @patch('time.sleep') - def test_backoff(self, sleep): - i = 0 - for _ in helpers.backoff('foo to bar'): - i += 1 - if i == 10: - break - sleep.assert_has_calls([ - call(2), call(4), call(8), call(16), call(32), - call(60), call(60), call(60), call(60)]) - - i = 0 - for _ in helpers.backoff('foo to bar', max_pause=10): - i += 1 - if i == 10: - break - sleep.assert_has_calls([ - call(2), call(4), call(8), call(10), call(10), - call(10), call(10), call(10), call(10)]) - - def test_autostart_disabled(self): - with tempfile.TemporaryDirectory() as tmpdir: - - prc = os.path.join(tmpdir, 'policy-rc.d') - prc_backup = prc + '-orig' - - with helpers.autostart_disabled(_policy_rc=prc): - # No existing policy-rc.d, so no backup made. - self.assertFalse(os.path.exists(prc_backup)) - - # A policy-rc.d file has been created that will disable - # package autostart per spec (ie. returns a 101 exit code). - self.assertTrue(os.path.exists(prc)) - self.assertEqual(subprocess.call([prc]), 101) - - with helpers.autostart_disabled(_policy_rc=prc): - # A second time, we have a backup made. - # policy-rc.d still works - self.assertTrue(os.path.exists(prc_backup)) - self.assertEqual(subprocess.call([prc]), 101) - - # Backup removed, and policy-rc.d still works. - self.assertFalse(os.path.exists(prc_backup)) - self.assertEqual(subprocess.call([prc]), 101) - - # Neither backup nor policy-rc.d exist now we are out of the - # context manager. - self.assertFalse(os.path.exists(prc_backup)) - self.assertFalse(os.path.exists(prc)) - - def test_autostart_disabled_partial(self): - with tempfile.TemporaryDirectory() as tmpdir: - - prc = os.path.join(tmpdir, 'policy-rc.d') - prc_backup = prc + '-orig' - - with helpers.autostart_disabled(['foo', 'bar'], _policy_rc=prc): - # No existing policy-rc.d, so no backup made. - self.assertFalse(os.path.exists(prc_backup)) - - # A policy-rc.d file has been created that will disable - # package autostart per spec (ie. returns a 101 exit code). - self.assertTrue(os.path.exists(prc)) - self.assertEqual(subprocess.call([prc, 'foo']), 101) - self.assertEqual(subprocess.call([prc, 'bar']), 101) - self.assertEqual(subprocess.call([prc, 'baz']), 0) - - # Neither backup nor policy-rc.d exist now we are out of the - # context manager. - self.assertFalse(os.path.exists(prc_backup)) - self.assertFalse(os.path.exists(prc)) - - @patch('helpers.autostart_disabled') - @patch('charmhelpers.fetch.apt_install') - def test_install_packages(self, apt_install, autostart_disabled): - packages = ['a_pack', 'b_pack'] - helpers.install_packages(packages) - - # All packages got installed, and hook aborted if package - # installation failed. - apt_install.assert_called_once_with(['a_pack', 'b_pack'], fatal=True) - - # The autostart_disabled context manager was used to stop - # package installation starting services. - autostart_disabled().__enter__.assert_called_once_with() - autostart_disabled().__exit__.assert_called_once_with(None, None, None) - - @patch('helpers.autostart_disabled') - @patch('charmhelpers.fetch.apt_install') - def test_install_packages_extras(self, apt_install, autostart_disabled): - packages = ['a_pack', 'b_pack'] - hookenv.config()['extra_packages'] = 'c_pack d_pack' - helpers.install_packages(packages) - - # All packages got installed, and hook aborted if package - # installation failed. - apt_install.assert_called_once_with(['a_pack', 'b_pack', - 'c_pack', 'd_pack'], fatal=True) - - # The autostart_disabled context manager was used to stop - # package installation starting services. - autostart_disabled().__enter__.assert_called_once_with() - autostart_disabled().__exit__.assert_called_once_with(None, None, None) - - @patch('helpers.autostart_disabled') - @patch('charmhelpers.fetch.apt_install') - def test_install_packages_noop(self, apt_install, autostart_disabled): - # Everything is already installed. Nothing to do. - fetch.filter_installed_packages.side_effect = lambda pkgs: [] - - packages = ['a_pack', 'b_pack'] - hookenv.config()['extra_packages'] = 'c_pack d_pack' - helpers.install_packages(packages) - - # All packages got installed, and hook aborted if package - # installation failed. - self.assertFalse(apt_install.called) - - # Autostart wasn't messed with. - self.assertFalse(autostart_disabled.called) - - @patch('subprocess.Popen') - def test_ensure_package_status(self, popen): - for status in ['install', 'hold']: - with self.subTest(status=status): - popen.reset_mock() - hookenv.config()['package_status'] = status - helpers.ensure_package_status(['a_pack', 'b_pack']) - - selections = 'a_pack {}\nb_pack {}\n'.format( - status, status).encode('US-ASCII') - - self.assertEqual( - [call(['dpkg', '--set-selections'], stdin=subprocess.PIPE), - call().communicate(input=selections)], popen.mock_calls) - - popen.reset_mock() - hookenv.config()['package_status'] = 'invalid' - self.assertRaises(RuntimeError, - helpers.ensure_package_status, ['a_pack', 'b_back']) - self.assertFalse(popen.called) - - @patch('charmhelpers.core.hookenv.leader_get') - def test_get_seed_ips(self, leader_get): - leader_get.return_value = '1.2.3.4,5.6.7.8' - self.assertSetEqual(helpers.get_seed_ips(), set(['1.2.3.4', - '5.6.7.8'])) - - @patch('helpers.read_cassandra_yaml') - def test_actual_seed_ips(self, read_yaml): - read_yaml.return_value = yaml.load(dedent('''\ - seed_provider: - - class_name: blah - parameters: - - seeds: a,b,c - ''')) - self.assertSetEqual(helpers.actual_seed_ips(), - set(['a', 'b', 'c'])) - - @patch('relations.StorageRelation') - def test_get_database_directory(self, storage_relation): - storage_relation().mountpoint = None - - # Relative paths are relative to /var/lib/cassandra - self.assertEqual(helpers.get_database_directory('bar'), - '/var/lib/cassandra/bar') - - # If there is an external mount, relative paths are relative to - # it. Note the extra 'cassandra' directory - life is easier - # if we store all our data in a subdirectory on the external - # mount rather than in its root. - storage_relation().mountpoint = '/srv/foo' - self.assertEqual(helpers.get_database_directory('bar'), - '/srv/foo/cassandra/bar') - - # Absolute paths are absolute and passed through unmolested. - self.assertEqual(helpers.get_database_directory('/bar'), '/bar') - - @patch('helpers.get_cassandra_version') - @patch('relations.StorageRelation') - def test_get_all_database_directories(self, storage_relation, ver): - ver.return_value = '2.2' - storage_relation().mountpoint = '/s' - self.assertDictEqual( - helpers.get_all_database_directories(), - dict(data_file_directories=['/s/cassandra/data'], - commitlog_directory='/s/cassandra/commitlog', - saved_caches_directory='/s/cassandra/saved_caches')) - - @patch('helpers.get_cassandra_version') - @patch('relations.StorageRelation') - def test_get_all_database_directories_30(self, storage_relation, ver): - ver.return_value = '3.0' - storage_relation().mountpoint = '/s' - self.assertDictEqual( - helpers.get_all_database_directories(), - dict(data_file_directories=['/s/cassandra/data'], - commitlog_directory='/s/cassandra/commitlog', - saved_caches_directory='/s/cassandra/saved_caches', - hints_directory='/s/cassandra/hints')) - - @patch('helpers.recursive_chown') - @patch('charmhelpers.core.host.mkdir') - @patch('helpers.get_database_directory') - @patch('helpers.is_cassandra_running') - def test_ensure_database_directory(self, is_running, get_db_dir, mkdir, - recursive_chown): - absdir = '/an/absolute/dir' - is_running.return_value = False - get_db_dir.return_value = absdir - - # ensure_database_directory() returns the absolute path. - self.assertEqual(helpers.ensure_database_directory(absdir), absdir) - - # The directory will have been made. - mkdir.assert_has_calls([ - call('/an'), - call('/an/absolute'), - call('/an/absolute/dir', - owner='cassandra', group='cassandra', perms=0o750)]) - - # The ownership of the contents has not been reset. Rather than - # attempting to remount an existing database, which requires - # resetting permissions, it is better to use sstableloader to - # import the data into the cluster. - self.assertFalse(recursive_chown.called) - - @patch('charmhelpers.core.host.write_file') - @patch('os.path.isdir') - @patch('subprocess.check_output') - def test_set_io_scheduler(self, check_output, isdir, write_file): - # Normal operation, the device is detected and the magic - # file written. - check_output.return_value = 'foo\n/dev/sdq 1 2 3 1% /foo\n' - isdir.return_value = True - - helpers.set_io_scheduler('fnord', '/foo') - - write_file.assert_called_once_with('/sys/block/sdq/queue/scheduler', - b'fnord', perms=0o644) - - # Some OSErrors we log warnings for, and continue. - for e in (errno.EACCES, errno.ENOENT): - with self.subTest(errno=e): - write_file.side_effect = repeat(OSError(e, 'Whoops')) - hookenv.log.reset_mock() - helpers.set_io_scheduler('fnord', '/foo') - hookenv.log.assert_has_calls([call(ANY), - call(ANY, hookenv.WARNING)]) - - # Other OSErrors just fail hard. - write_file.side_effect = iter([OSError(errno.EFAULT, 'Whoops')]) - self.assertRaises(OSError, helpers.set_io_scheduler, 'fnord', '/foo') - - # If we are not under lxc, nothing happens at all except a log - # message. - helpers.is_lxc.return_value = True - hookenv.log.reset_mock() - write_file.reset_mock() - helpers.set_io_scheduler('fnord', '/foo') - self.assertFalse(write_file.called) - hookenv.log.assert_called_once_with(ANY) # A single INFO message. - - @patch('shutil.chown') - def test_recursive_chown(self, chown): - with tempfile.TemporaryDirectory() as tmpdir: - os.makedirs(os.path.join(tmpdir, 'a', 'bb', 'ccc')) - with open(os.path.join(tmpdir, 'top file'), 'w') as f: - f.write('top file') - with open(os.path.join(tmpdir, 'a', 'bb', 'midfile'), 'w') as f: - f.write('midfile') - helpers.recursive_chown(tmpdir, 'un', 'gn') - chown.assert_has_calls( - [call(os.path.join(tmpdir, 'a'), 'un', 'gn'), - call(os.path.join(tmpdir, 'a', 'bb'), 'un', 'gn'), - call(os.path.join(tmpdir, 'a', 'bb', 'ccc'), 'un', 'gn'), - call(os.path.join(tmpdir, 'top file'), 'un', 'gn'), - call(os.path.join(tmpdir, 'a', 'bb', 'midfile'), 'un', 'gn')], - any_order=True) - - def test_maybe_backup(self): - with tempfile.TemporaryDirectory() as tmpdir: - # Our file is backed up to a .orig - path = os.path.join(tmpdir, 'foo.conf') - host.write_file(path, b'hello', perms=0o644) - helpers.maybe_backup(path) - path_orig = path + '.orig' - self.assertTrue(os.path.exists(path_orig)) - with open(path_orig, 'rb') as f: - self.assertEqual(f.read(), b'hello') - # Safe permissions - self.assertEqual(os.lstat(path_orig).st_mode & 0o777, 0o600) - - # A second call, nothing happens as the .orig is already - # there. - host.write_file(path, b'second') - helpers.maybe_backup(path) - with open(path_orig, 'rb') as f: - self.assertEqual(f.read(), b'hello') - - @patch('charmhelpers.fetch.apt_cache') - def test_get_package_version(self, apt_cache): - version = namedtuple('Version', 'ver_str')('1.0-foo') - package = namedtuple('Package', 'current_ver')(version) - apt_cache.return_value = dict(package=package) - ver = helpers.get_package_version('package') - self.assertEqual(ver, '1.0-foo') - - @patch('charmhelpers.fetch.apt_cache') - def test_get_package_version_not_found(self, apt_cache): - version = namedtuple('Version', 'ver_str')('1.0-foo') - package = namedtuple('Package', 'current_ver')(version) - apt_cache.return_value = dict(package=package) - self.assertIsNone(helpers.get_package_version('notfound')) - - @patch('charmhelpers.fetch.apt_cache') - def test_get_package_version_not_installed(self, apt_cache): - package = namedtuple('Package', 'current_ver')(None) - apt_cache.return_value = dict(package=package) - self.assertIsNone(helpers.get_package_version('package')) - - def test_get_jre(self): - hookenv.config()['jre'] = 'opEnjdk' # Case insensitive - self.assertEqual(helpers.get_jre(), 'openjdk') - - hookenv.config()['jre'] = 'oRacle' # Case insensitive - self.assertEqual(helpers.get_jre(), 'oracle') - - def test_get_jre_unknown(self): - hookenv.config()['jre'] = 'OopsJDK' - self.assertEqual(helpers.get_jre(), 'openjdk') - # An error was logged. - hookenv.log.assert_called_once_with(ANY, hookenv.ERROR) - - def test_get_jre_dse_override(self): - hookenv.config()['edition'] = 'dse' - self.assertEqual(helpers.get_jre(), 'oracle') - - def test_get_cassandra_edition(self): - hookenv.config()['edition'] = 'community' - self.assertEqual(helpers.get_cassandra_edition(), 'community') - - hookenv.config()['edition'] = 'DSE' # Case insensitive - self.assertEqual(helpers.get_cassandra_edition(), 'dse') - - self.assertFalse(hookenv.log.called) - - hookenv.config()['edition'] = 'typo' # Default to community - self.assertEqual(helpers.get_cassandra_edition(), 'community') - hookenv.log.assert_any_call(ANY, hookenv.ERROR) # Logs an error. - - @patch('helpers.get_cassandra_edition') - def test_get_cassandra_service(self, get_edition): - get_edition.return_value = 'whatever' - self.assertEqual(helpers.get_cassandra_service(), 'cassandra') - get_edition.return_value = 'dse' - self.assertEqual(helpers.get_cassandra_service(), 'dse') - - def test_get_cassandra_service_dse_override(self): - hookenv.config()['edition'] = 'dse' - self.assertEqual(helpers.get_cassandra_service(), 'dse') - - @patch('helpers.get_package_version') - def test_get_cassandra_version(self, get_package_version): - # Return cassandra package version if it is installed. - get_package_version.return_value = '1.2.3-2~64' - self.assertEqual(helpers.get_cassandra_version(), '1.2.3-2~64') - get_package_version.assert_called_with('cassandra') - - @patch('helpers.get_package_version') - def test_get_cassandra_version_uninstalled(self, get_package_version): - # Return none if the main cassandra package is not installed - get_package_version.return_value = None - self.assertEqual(helpers.get_cassandra_version(), None) - get_package_version.assert_called_with('cassandra') - - @patch('helpers.get_package_version') - def test_get_cassandra_version_dse(self, get_package_version): - # Return the cassandra version equivalent if using dse. - hookenv.config()['edition'] = 'dse' - get_package_version.return_value = '4.7-beta2~88' - self.assertEqual(helpers.get_cassandra_version(), '2.1') - get_package_version.assert_called_with('dse-full') - - @patch('helpers.get_package_version') - def test_get_cassandra_version_dse_uninstalled(self, get_package_version): - # Return the cassandra version equivalent if using dse. - hookenv.config()['edition'] = 'dse' - get_package_version.return_value = None - self.assertEqual(helpers.get_cassandra_version(), None) - get_package_version.assert_called_with('dse-full') - - def test_get_cassandra_config_dir(self): - self.assertEqual(helpers.get_cassandra_config_dir(), - '/etc/cassandra') - hookenv.config()['edition'] = 'dse' - self.assertEqual(helpers.get_cassandra_config_dir(), - '/etc/dse/cassandra') - - @patch('helpers.get_cassandra_config_dir') - def test_get_cassandra_yaml_file(self, get_cassandra_config_dir): - get_cassandra_config_dir.return_value = '/foo' - self.assertEqual(helpers.get_cassandra_yaml_file(), - '/foo/cassandra.yaml') - - @patch('helpers.get_cassandra_config_dir') - def test_get_cassandra_env_file(self, get_cassandra_config_dir): - get_cassandra_config_dir.return_value = '/foo' - self.assertEqual(helpers.get_cassandra_env_file(), - '/foo/cassandra-env.sh') - - @patch('helpers.get_cassandra_config_dir') - def test_get_cassandra_rackdc_file(self, get_cassandra_config_dir): - get_cassandra_config_dir.return_value = '/foo' - self.assertEqual(helpers.get_cassandra_rackdc_file(), - '/foo/cassandra-rackdc.properties') - - @patch('helpers.get_cassandra_edition') - def test_get_cassandra_pid_file(self, get_edition): - get_edition.return_value = 'whatever' - self.assertEqual(helpers.get_cassandra_pid_file(), - '/var/run/cassandra/cassandra.pid') - get_edition.return_value = 'dse' - self.assertEqual(helpers.get_cassandra_pid_file(), - '/var/run/dse/dse.pid') - - def test_get_cassandra_packages(self): - # Default - self.assertSetEqual(helpers.get_cassandra_packages(), - set(['cassandra', 'ntp', 'run-one', - 'netcat', 'openjdk-8-jre-headless'])) - - def test_get_cassandra_packages_oracle_jre(self): - # Oracle JRE - hookenv.config()['jre'] = 'oracle' - self.assertSetEqual(helpers.get_cassandra_packages(), - set(['cassandra', 'ntp', 'run-one', 'netcat'])) - - def test_get_cassandra_packages_dse(self): - # DataStax Enterprise, and implicit Oracle JRE. - hookenv.config()['edition'] = 'dsE' # Insensitive. - self.assertSetEqual(helpers.get_cassandra_packages(), - set(['dse-full', 'ntp', 'run-one', 'netcat'])) - - @patch('helpers.get_cassandra_service') - @patch('charmhelpers.core.host.service_stop') - @patch('helpers.is_cassandra_running') - def test_stop_cassandra(self, is_cassandra_running, - service_stop, get_service): - get_service.return_value = sentinel.service_name - is_cassandra_running.side_effect = iter([True, False]) - helpers.stop_cassandra() - service_stop.assert_called_once_with(sentinel.service_name) - - @patch('helpers.get_cassandra_service') - @patch('charmhelpers.core.host.service_stop') - @patch('helpers.is_cassandra_running') - def test_stop_cassandra_noop(self, is_cassandra_running, - service_stop, get_service): - get_service.return_value = sentinel.service_name - is_cassandra_running.return_value = False - helpers.stop_cassandra() - self.assertFalse(service_stop.called) - - @patch('charmhelpers.core.hookenv.status_set') - @patch('helpers.get_cassandra_service') - @patch('charmhelpers.core.host.service_stop') - @patch('helpers.is_cassandra_running') - def test_stop_cassandra_failure(self, is_cassandra_running, - service_stop, get_service, status_set): - get_service.return_value = sentinel.service_name - is_cassandra_running.side_effect = iter([True, True]) - self.assertRaises(SystemExit, helpers.stop_cassandra) - service_stop.assert_called_once_with(sentinel.service_name) - status_set.assert_called_once_with('blocked', - 'Cassandra failed to shut down') - - @patch('helpers.actual_seed_ips') - @patch('time.sleep') - @patch('helpers.get_cassandra_service') - @patch('charmhelpers.core.host.service_start') - @patch('helpers.is_cassandra_running') - def test_start_cassandra(self, is_cassandra_running, - service_start, get_service, sleep, seed_ips): - get_service.return_value = sentinel.service_name - seed_ips.return_value = set(['1.2.3.4']) - is_cassandra_running.return_value = True - helpers.start_cassandra() - self.assertFalse(service_start.called) - - is_cassandra_running.side_effect = iter([False, False, False, True]) - helpers.start_cassandra() - service_start.assert_called_once_with(sentinel.service_name) - - # A side effect of starting cassandra is storing the current live - # seed list, so we can tell when it has changed. - self.assertEqual(hookenv.config()['configured_seeds'], ['1.2.3.4']) - - @patch('os.chmod') - @patch('helpers.is_cassandra_running') - @patch('relations.StorageRelation') - def test_remount_cassandra(self, storage, is_running, chmod): - config = hookenv.config() - storage().needs_remount.return_value = True - storage().mountpoint = '/srv/foo' - is_running.return_value = False - config['data_file_directories'] = '/srv/ext/data1 data2' - config['bootstrapped_into_cluster'] = True - - helpers.remount_cassandra() - storage().migrate.assert_called_once_with('/var/lib/cassandra', - 'cassandra') - chmod.assert_called_once_with('/srv/foo/cassandra', 0o750) - self.assertEqual(config['bootstrapped_into_cluster'], False) - - @patch('os.chmod') - @patch('helpers.is_cassandra_running') - @patch('relations.StorageRelation') - def test_remount_cassandra_noop(self, storage, is_running, chmod): - storage().needs_remount.return_value = False - storage().mountpoint = None - is_running.return_value = False - - helpers.remount_cassandra() - self.assertFalse(storage().migrate.called) - self.assertFalse(chmod.called) - - @patch('helpers.is_cassandra_running') - @patch('relations.StorageRelation') - def test_remount_cassandra_unmount(self, storage, is_running): - storage().needs_remount.return_value = True - storage().mountpoint = None # Reverting to local disk. - is_running.return_value = False - hookenv.config()['data_file_directories'] = '/srv/ext/data1 data2' - - helpers.remount_cassandra() - - # We cannot migrate data back to local disk, as by the time our - # hooks are called the data is gone. - self.assertFalse(storage().migrate.called) - - # We warn in this case, as reverting to local disk may resurrect - # old data (if the cluster was ever time while using local - # disk). - hookenv.log.assert_any_call(ANY, hookenv.WARNING) - - @patch('helpers.ensure_database_directory') - @patch('helpers.get_all_database_directories') - def test_ensure_database_directories(self, get_all_dirs, ensure_dir): - get_all_dirs.return_value = dict( - data_file_directories=[sentinel.data_file_dir_1, - sentinel.data_file_dir_2], - commitlog_directory=sentinel.commitlog_dir, - saved_caches_directory=sentinel.saved_caches_dir) - helpers.ensure_database_directories() - ensure_dir.assert_has_calls([ - call(sentinel.data_file_dir_1), - call(sentinel.data_file_dir_2), - call(sentinel.commitlog_dir), - call(sentinel.saved_caches_dir)], any_order=True) - - @patch('cassandra.cluster.Cluster') - @patch('cassandra.auth.PlainTextAuthProvider') - @patch('helpers.superuser_credentials') - @patch('helpers.read_cassandra_yaml') - def test_connect(self, yaml, creds, auth_provider, cluster): - # host and port are pulled from the current active - # cassandra.yaml file, rather than configuration, as - # configuration may not match reality (if for no other reason - # that we are running this code in order to make reality match - # the desired configuration). - yaml.return_value = dict(rpc_address='1.2.3.4', - native_transport_port=666) - - creds.return_value = ('un', 'pw') - auth_provider.return_value = sentinel.ap - - cluster().connect.return_value = sentinel.session - cluster.reset_mock() - - with helpers.connect() as session: - auth_provider.assert_called_once_with(username='un', - password='pw') - cluster.assert_called_once_with(['1.2.3.4'], port=666, - auth_provider=sentinel.ap) - self.assertIs(session, sentinel.session) - self.assertFalse(cluster().shutdown.called) - - cluster().shutdown.assert_called_once_with() - - @patch('cassandra.cluster.Cluster') - @patch('cassandra.auth.PlainTextAuthProvider') - @patch('helpers.superuser_credentials') - @patch('helpers.read_cassandra_yaml') - def test_connect_with_creds(self, yaml, creds, auth_provider, cluster): - # host and port are pulled from the current active - # cassandra.yaml file, rather than configuration, as - # configuration may not match reality (if for no other reason - # that we are running this code in order to make reality match - # the desired configuration). - yaml.return_value = dict(rpc_address='1.2.3.4', - native_transport_port=666) - - auth_provider.return_value = sentinel.ap - - with helpers.connect(username='explicit', password='boo'): - auth_provider.assert_called_once_with(username='explicit', - password='boo') - - @patch('time.sleep') - @patch('time.time') - @patch('cassandra.cluster.Cluster') - @patch('helpers.superuser_credentials') - @patch('helpers.read_cassandra_yaml') - def test_connect_badauth(self, yaml, creds, cluster, time, sleep): - # host and port are pulled from the current active - # cassandra.yaml file, rather than configuration, as - # configuration may not match reality (if for no other reason - # that we are running this code in order to make reality match - # the desired configuration). - yaml.return_value = dict(rpc_address='1.2.3.4', - native_transport_port=666) - time.side_effect = [0, 7, 99999] - - creds.return_value = ('un', 'pw') - - x = NoHostAvailable('whoops', {'1.2.3.4': AuthenticationFailed()}) - cluster().connect.side_effect = x - - self.assertRaises(AuthenticationFailed, helpers.connect().__enter__) - - # Authentication failures are retried, but for a shorter time - # than other connection errors which are retried for a few - # minutes. - self.assertEqual(cluster().connect.call_count, 2) - self.assertEqual(cluster().shutdown.call_count, 2) - - @patch('time.sleep') - @patch('time.time') - @patch('cassandra.cluster.Cluster') - @patch('helpers.superuser_credentials') - @patch('helpers.read_cassandra_yaml') - def test_connect_timeout(self, yaml, creds, cluster, time, sleep): - yaml.return_value = dict(rpc_address='1.2.3.4', - native_transport_port=666) - time.side_effect = [0, 1, 2, 3, 10, 20, 30, 40, 99999] - - creds.return_value = ('un', 'pw') - - x = NoHostAvailable('whoops', {'1.2.3.4': sentinel.exception}) - cluster().connect.side_effect = x - - self.assertRaises(NoHostAvailable, helpers.connect().__enter__) - - # Authentication failures fail immediately, unlike other - # connection errors which are retried. - self.assertEqual(cluster().connect.call_count, 5) - self.assertEqual(cluster().shutdown.call_count, 5) - self.assertEqual(sleep.call_count, 4) - - @patch('cassandra.query.SimpleStatement') - def test_query(self, simple_statement): - simple_statement.return_value = sentinel.s_statement - session = MagicMock() - session.execute.return_value = sentinel.results - self.assertEqual(helpers.query(session, sentinel.statement, - sentinel.consistency, sentinel.args), - sentinel.results) - simple_statement.assert_called_once_with( - sentinel.statement, consistency_level=sentinel.consistency) - session.execute.assert_called_once_with(simple_statement(''), - sentinel.args) - - @patch('cassandra.query.SimpleStatement') - @patch('helpers.backoff') - def test_query_retry(self, backoff, simple_statement): - backoff.return_value = repeat(True) - simple_statement.return_value = sentinel.s_statement - session = MagicMock() - session.execute.side_effect = iter([RuntimeError(), sentinel.results]) - self.assertEqual(helpers.query(session, sentinel.statement, - sentinel.consistency, sentinel.args), - sentinel.results) - self.assertEqual(session.execute.call_count, 2) - - @patch('time.time') - @patch('cassandra.query.SimpleStatement') - @patch('helpers.backoff') - def test_query_timeout(self, backoff, simple_statement, time): - backoff.return_value = repeat(True) - # Timeout is 600 - time.side_effect = iter([0, 1, 2, 3, 500, 700, RuntimeError()]) - simple_statement.return_value = sentinel.s_statement - session = MagicMock() - - class Whoops(Exception): - pass - - session.execute.side_effect = repeat(Whoops('Fail')) - self.assertRaises(Whoops, helpers.query, session, sentinel.statement, - sentinel.consistency, sentinel.args) - self.assertEqual(session.execute.call_count, 4) - - @patch('helpers.get_cassandra_version') - @patch('helpers.query') - def test_ensure_user(self, query, ver): - ver.return_value = '2.1' - helpers.ensure_user(sentinel.session, - sentinel.username, sentinel.pwhash, - superuser=sentinel.supflag) - query.assert_has_calls([ - call(sentinel.session, - 'INSERT INTO system_auth.users (name, super) VALUES (%s, %s)', - ConsistencyLevel.ALL, (sentinel.username, sentinel.supflag)), - call(sentinel.session, - 'INSERT INTO system_auth.credentials (username, salted_hash) ' - 'VALUES (%s, %s)', - ConsistencyLevel.ALL, - (sentinel.username, sentinel.pwhash))]) - - @patch('helpers.get_cassandra_version') - @patch('helpers.query') - def test_ensure_user_22(self, query, ver): - ver.return_value = '2.2' - helpers.ensure_user(sentinel.session, - sentinel.username, sentinel.pwhash, - superuser=sentinel.supflag) - query.assert_called_once_with(sentinel.session, - 'INSERT INTO system_auth.roles (role, ' - 'can_login, is_superuser, salted_hash) ' - 'VALUES (%s, TRUE, %s, %s)', - ConsistencyLevel.ALL, - (sentinel.username, sentinel.supflag, - sentinel.pwhash)) - - @patch('helpers.ensure_user') - @patch('helpers.encrypt_password') - @patch('helpers.nodetool') - @patch('helpers.reconfigure_and_restart_cassandra') - @patch('helpers.connect') - @patch('helpers.superuser_credentials') - def test_create_unit_superuser_hard(self, creds, connect, restart, - nodetool, encrypt_password, - ensure_user): - creds.return_value = (sentinel.username, sentinel.password) - connect().__enter__.return_value = sentinel.session - connect().__exit__.return_value = False - connect.reset_mock() - - encrypt_password.return_value = sentinel.pwhash - - helpers.create_unit_superuser_hard() - - # Cassandra was restarted twice, first with authentication - # disabled and again with the normal configuration. - restart.assert_has_calls([ - call(dict(authenticator='AllowAllAuthenticator', - rpc_address='localhost')), - call()]) - - # A connection was made as the superuser, which words because - # authentication has been disabled on this node. - connect.assert_called_once_with() - - # The user was created. - encrypt_password.assert_called_once_with(sentinel.password) - ensure_user.assert_called_once_with(sentinel.session, - sentinel.username, - sentinel.pwhash, - superuser=True) - - # Local Cassandra was flushed. This is probably unnecessary. - nodetool.assert_called_once_with('flush') - - def test_cqlshrc_path(self): - self.assertEqual(helpers.get_cqlshrc_path(), - '/root/.cassandra/cqlshrc') - - def test_superuser_username(self): - self.assertEqual(hookenv.local_unit(), 'service/1') - self.assertEqual(helpers.superuser_username(), 'juju_service_1') - - @patch('helpers.superuser_username') - @patch('helpers.get_cqlshrc_path') - @patch('helpers.get_cassandra_version') - @patch('charmhelpers.core.host.pwgen') - def test_superuser_credentials_20(self, pwgen, get_cassandra_version, - get_cqlshrc_path, get_username): - get_cassandra_version.return_value = '2.0' - with tempfile.TemporaryDirectory() as dotcassandra_dir: - cqlshrc_path = os.path.join(dotcassandra_dir, 'cqlshrc') - get_cqlshrc_path.return_value = cqlshrc_path - get_username.return_value = 'foo' - pwgen.return_value = 'secret' - hookenv.config()['rpc_port'] = 666 - hookenv.config()['native_transport_port'] = 777 - - # First time generates username & password. - username, password = helpers.superuser_credentials() - self.assertEqual(username, 'foo') - self.assertEqual(password, 'secret') - - # Credentials are stored in the cqlshrc file. - expected_cqlshrc = dedent('''\ - [authentication] - username = foo - password = secret - - [connection] - hostname = 10.30.0.1 - port = 666 - ''').strip() - with open(cqlshrc_path, 'r') as f: - self.assertEqual(f.read().strip(), expected_cqlshrc) - - # If the credentials have been stored, they are not - # regenerated. - pwgen.return_value = 'secret2' - username, password = helpers.superuser_credentials() - self.assertEqual(username, 'foo') - self.assertEqual(password, 'secret') - with open(cqlshrc_path, 'r') as f: - self.assertEqual(f.read().strip(), expected_cqlshrc) - - @patch('helpers.superuser_username') - @patch('helpers.get_cqlshrc_path') - @patch('helpers.get_cassandra_version') - @patch('charmhelpers.core.host.pwgen') - def test_superuser_credentials(self, pwgen, get_cassandra_version, - get_cqlshrc_path, get_username): - # Cassandra 2.1 or higher uses native protocol in its cqlshrc - get_cassandra_version.return_value = '2.1' - with tempfile.TemporaryDirectory() as dotcassandra_dir: - cqlshrc_path = os.path.join(dotcassandra_dir, 'cqlshrc') - get_cqlshrc_path.return_value = cqlshrc_path - get_username.return_value = 'foo' - pwgen.return_value = 'secret' - hookenv.config()['rpc_port'] = 666 - hookenv.config()['native_transport_port'] = 777 - - # First time generates username & password. - username, password = helpers.superuser_credentials() - self.assertEqual(username, 'foo') - self.assertEqual(password, 'secret') - - # Credentials are stored in the cqlshrc file. - expected_cqlshrc = dedent('''\ - [authentication] - username = foo - password = secret - - [connection] - hostname = 10.30.0.1 - port = 777 - ''').strip() - with open(cqlshrc_path, 'r') as f: - self.assertEqual(f.read().strip(), expected_cqlshrc) - - @patch('subprocess.check_output') - def test_nodetool(self, check_output): - check_output.return_value = 'OK' - self.assertEqual(helpers.nodetool('status', 'system_auth'), 'OK') - - # The expected command was run against the local node. - check_output.assert_called_once_with( - ['nodetool', 'status', 'system_auth'], - universal_newlines=True, stderr=subprocess.STDOUT, timeout=119) - - # The output was emitted. - helpers.emit.assert_called_once_with('OK') - - @patch('helpers.is_cassandra_running') - @patch('helpers.backoff') - @patch('subprocess.check_output') - def test_nodetool_CASSANDRA_8776(self, check_output, backoff, is_running): - is_running.return_value = True - backoff.return_value = repeat(True) - check_output.side_effect = iter(['ONE Error: stuff', 'TWO OK']) - self.assertEqual(helpers.nodetool('status'), 'TWO OK') - - # The output was emitted. - helpers.emit.assert_called_once_with('TWO OK') - - @patch('helpers.is_cassandra_running') - @patch('helpers.backoff') - @patch('subprocess.check_output') - def test_nodetool_retry(self, check_output, backoff, is_running): - backoff.return_value = repeat(True) - is_running.return_value = True - check_output.side_effect = iter([ - subprocess.CalledProcessError([], 1, 'fail 1'), - subprocess.CalledProcessError([], 1, 'fail 2'), - subprocess.CalledProcessError([], 1, 'fail 3'), - subprocess.CalledProcessError([], 1, 'fail 4'), - subprocess.CalledProcessError([], 1, 'fail 5'), - 'OK']) - self.assertEqual(helpers.nodetool('status'), 'OK') - - # Later fails and final output was emitted. - helpers.emit.assert_has_calls([call('fail 5'), call('OK')]) - - @patch('helpers.get_bootstrapped_ips') - def test_num_nodes(self, bootstrapped_ips): - bootstrapped_ips.return_value = ['10.0.0.1', '10.0.0.2'] - self.assertEqual(helpers.num_nodes(), 2) - - @patch('helpers.get_cassandra_yaml_file') - def test_read_cassandra_yaml(self, get_cassandra_yaml_file): - with tempfile.NamedTemporaryFile('w') as f: - f.write('a: one') - f.flush() - get_cassandra_yaml_file.return_value = f.name - self.assertDictEqual(helpers.read_cassandra_yaml(), - dict(a='one')) - - @patch('helpers.get_cassandra_yaml_file') - def test_write_cassandra_yaml(self, get_cassandra_yaml_file): - with tempfile.NamedTemporaryFile() as f: - get_cassandra_yaml_file.return_value = f.name - helpers.write_cassandra_yaml([1, 2, 3]) - with open(f.name, 'r') as f2: - self.assertEqual(f2.read(), '[1, 2, 3]\n') - - @patch('helpers.get_cassandra_version') - @patch('helpers.get_cassandra_yaml_file') - @patch('helpers.get_seed_ips') - @patch('charmhelpers.core.host.write_file') - def test_configure_cassandra_yaml_20(self, write_file, seed_ips, yaml_file, - get_cassandra_version): - get_cassandra_version.return_value = '2.0' - hookenv.config().update(dict(num_tokens=128, - cluster_name='test_cluster_name', - partitioner='test_partitioner')) - - seed_ips.return_value = ['10.20.0.1', '10.20.0.2', '10.20.0.3'] - - existing_config = ''' - seed_provider: - - class_name: blah.SimpleSeedProvider - parameters: - - seeds: 127.0.0.1 # Comma separated list. - ''' - - with tempfile.TemporaryDirectory() as tmpdir: - yaml_config = os.path.join(tmpdir, 'c.yaml') - yaml_file.return_value = yaml_config - with open(yaml_config, 'w', encoding='UTF-8') as f: - f.write(existing_config) - - helpers.configure_cassandra_yaml() - - self.assertEqual(write_file.call_count, 2) - new_config = write_file.call_args[0][1] - - expected_config = dedent('''\ - cluster_name: test_cluster_name - authenticator: PasswordAuthenticator - num_tokens: 128 - partitioner: test_partitioner - listen_address: 10.20.0.1 - rpc_address: 0.0.0.0 - rpc_port: 9160 - native_transport_port: 9042 - storage_port: 7000 - ssl_storage_port: 7001 - authorizer: AllowAllAuthorizer - seed_provider: - - class_name: blah.SimpleSeedProvider - parameters: - # No whitespace in seeds is important. - - seeds: '10.20.0.1,10.20.0.2,10.20.0.3' - endpoint_snitch: GossipingPropertyFileSnitch - data_file_directories: - - /var/lib/cassandra/data - commitlog_directory: /var/lib/cassandra/commitlog - saved_caches_directory: /var/lib/cassandra/saved_caches - compaction_throughput_mb_per_sec: 16 - stream_throughput_outbound_megabits_per_sec: 200 - tombstone_warn_threshold: 1000 - tombstone_failure_threshold: 100000 - start_rpc: true - ''') - self.maxDiff = None - self.assertEqual(yaml.safe_load(new_config), - yaml.safe_load(expected_config)) - - # Confirm we can use an explicit cluster_name too. - write_file.reset_mock() - hookenv.config()['cluster_name'] = 'fubar' - helpers.configure_cassandra_yaml() - new_config = write_file.call_args[0][1] - self.assertEqual(yaml.safe_load(new_config)['cluster_name'], - 'fubar') - - @patch('helpers.get_cassandra_version') - @patch('helpers.get_cassandra_yaml_file') - @patch('helpers.get_seed_ips') - @patch('charmhelpers.core.host.write_file') - def test_configure_cassandra_yaml_22(self, write_file, seed_ips, yaml_file, - get_cassandra_version): - get_cassandra_version.return_value = '2.0' - hookenv.config().update(dict(num_tokens=128, - cluster_name='test_cluster_name', - partitioner='test_partitioner')) - - seed_ips.return_value = ['10.20.0.1', '10.20.0.2', '10.20.0.3'] - - existing_config = ''' - seed_provider: - - class_name: blah.SimpleSeedProvider - parameters: - - seeds: 127.0.0.1 # Comma separated list. - start_rpc: false # Defaults to False starting 2.2 - ''' - - with tempfile.TemporaryDirectory() as tmpdir: - yaml_config = os.path.join(tmpdir, 'c.yaml') - yaml_file.return_value = yaml_config - with open(yaml_config, 'w', encoding='UTF-8') as f: - f.write(existing_config) - - helpers.configure_cassandra_yaml() - - self.assertEqual(write_file.call_count, 2) - new_config = write_file.call_args[0][1] - - expected_config = dedent('''\ - start_rpc: true - cluster_name: test_cluster_name - authenticator: PasswordAuthenticator - num_tokens: 128 - partitioner: test_partitioner - listen_address: 10.20.0.1 - rpc_address: 0.0.0.0 - rpc_port: 9160 - native_transport_port: 9042 - storage_port: 7000 - ssl_storage_port: 7001 - authorizer: AllowAllAuthorizer - seed_provider: - - class_name: blah.SimpleSeedProvider - parameters: - # No whitespace in seeds is important. - - seeds: '10.20.0.1,10.20.0.2,10.20.0.3' - endpoint_snitch: GossipingPropertyFileSnitch - data_file_directories: - - /var/lib/cassandra/data - commitlog_directory: /var/lib/cassandra/commitlog - saved_caches_directory: /var/lib/cassandra/saved_caches - compaction_throughput_mb_per_sec: 16 - stream_throughput_outbound_megabits_per_sec: 200 - tombstone_warn_threshold: 1000 - tombstone_failure_threshold: 100000 - ''') - self.maxDiff = None - self.assertEqual(yaml.safe_load(new_config), - yaml.safe_load(expected_config)) - - # Confirm we can use an explicit cluster_name too. - write_file.reset_mock() - hookenv.config()['cluster_name'] = 'fubar' - helpers.configure_cassandra_yaml() - new_config = write_file.call_args[0][1] - self.assertEqual(yaml.safe_load(new_config)['cluster_name'], - 'fubar') - - @patch('helpers.get_cassandra_version') - @patch('helpers.get_cassandra_yaml_file') - @patch('helpers.get_seed_ips') - @patch('charmhelpers.core.host.write_file') - def test_configure_cassandra_yaml(self, write_file, seed_ips, - yaml_file, get_cassandra_version): - get_cassandra_version.return_value = '2.1' - hookenv.config().update(dict(num_tokens=128, - cluster_name='test_cluster_name', - partitioner='test_partitioner')) - - seed_ips.return_value = ['10.20.0.1', '10.20.0.2', '10.20.0.3'] - - existing_config = ''' - seed_provider: - - class_name: blah.SimpleSeedProvider - parameters: - - seeds: 127.0.0.1 # Comma separated list. - ''' - - with tempfile.TemporaryDirectory() as tmpdir: - yaml_config = os.path.join(tmpdir, 'c.yaml') - yaml_file.return_value = yaml_config - with open(yaml_config, 'w', encoding='UTF-8') as f: - f.write(existing_config) - - helpers.configure_cassandra_yaml() - - self.assertEqual(write_file.call_count, 2) - new_config = write_file.call_args[0][1] - - expected_config = dedent('''\ - cluster_name: test_cluster_name - authenticator: PasswordAuthenticator - num_tokens: 128 - partitioner: test_partitioner - listen_address: 10.20.0.1 - rpc_address: 0.0.0.0 - broadcast_rpc_address: 10.30.0.1 - start_rpc: true - rpc_port: 9160 - native_transport_port: 9042 - storage_port: 7000 - ssl_storage_port: 7001 - authorizer: AllowAllAuthorizer - seed_provider: - - class_name: blah.SimpleSeedProvider - parameters: - # No whitespace in seeds is important. - - seeds: '10.20.0.1,10.20.0.2,10.20.0.3' - endpoint_snitch: GossipingPropertyFileSnitch - data_file_directories: - - /var/lib/cassandra/data - commitlog_directory: /var/lib/cassandra/commitlog - saved_caches_directory: /var/lib/cassandra/saved_caches - compaction_throughput_mb_per_sec: 16 - stream_throughput_outbound_megabits_per_sec: 200 - tombstone_warn_threshold: 1000 - tombstone_failure_threshold: 100000 - ''') - self.maxDiff = None - self.assertEqual(yaml.safe_load(new_config), - yaml.safe_load(expected_config)) - - @patch('helpers.get_cassandra_version') - @patch('helpers.get_cassandra_yaml_file') - @patch('helpers.get_seed_ips') - @patch('charmhelpers.core.host.write_file') - def test_configure_cassandra_yaml_overrides(self, write_file, seed_ips, - yaml_file, version): - version.return_value = '2.1' - hookenv.config().update(dict(num_tokens=128, - cluster_name=None, - partitioner='my_partitioner')) - - seed_ips.return_value = ['10.20.0.1', '10.20.0.2', '10.20.0.3'] - - existing_config = dedent('''\ - seed_provider: - - class_name: blah.blah.SimpleSeedProvider - parameters: - - seeds: 127.0.0.1 # Comma separated list. - ''') - overrides = dict(partitioner='overridden_partitioner') - - with tempfile.TemporaryDirectory() as tmpdir: - yaml_config = os.path.join(tmpdir, 'c.yaml') - yaml_file.return_value = yaml_config - with open(yaml_config, 'w', encoding='UTF-8') as f: - f.write(existing_config) - - helpers.configure_cassandra_yaml(overrides=overrides) - - self.assertEqual(write_file.call_count, 2) - new_config = write_file.call_args[0][1] - - self.assertEqual(yaml.safe_load(new_config)['partitioner'], - 'overridden_partitioner') - - def test_get_pid_from_file(self): - with tempfile.NamedTemporaryFile('w') as pid_file: - pid_file.write(' 42\t') - pid_file.flush() - self.assertEqual(helpers.get_pid_from_file(pid_file.name), 42) - pid_file.write('\nSome Noise') - pid_file.flush() - self.assertEqual(helpers.get_pid_from_file(pid_file.name), 42) - - for invalid_pid in ['-1', '0', 'fred']: - with self.subTest(invalid_pid=invalid_pid): - with tempfile.NamedTemporaryFile('w') as pid_file: - pid_file.write(invalid_pid) - pid_file.flush() - self.assertRaises(ValueError, - helpers.get_pid_from_file, pid_file.name) - - with tempfile.TemporaryDirectory() as tmpdir: - self.assertRaises(OSError, helpers.get_pid_from_file, - os.path.join(tmpdir, 'invalid.pid')) - - @patch('helpers.get_cassandra_pid_file') - def test_is_cassandra_running_not_running(self, get_pid_file): - # When Cassandra is not running, the pidfile does not exist. - get_pid_file.return_value = 'does not exist' - self.assertFalse(helpers.is_cassandra_running()) - - @patch('os.path.exists') - @patch('helpers.get_pid_from_file') - def test_is_cassandra_running_invalid_pid(self, get_pid_from_file, exists): - # get_pid_from_file raises a ValueError if the pid is illegal. - get_pid_from_file.side_effect = repeat(ValueError('Whoops')) - exists.return_value = True # The pid file is there, just insane. - - # is_cassandra_running() fails hard in this case, since we - # cannot safely continue when the system is insane. - self.assertRaises(ValueError, helpers.is_cassandra_running) - - @patch('os.kill') - @patch('os.path.exists') - @patch('helpers.get_pid_from_file') - def test_is_cassandra_running_missing_process(self, get_pid_from_file, - exists, kill): - # get_pid_from_file raises a ValueError if the pid is illegal. - get_pid_from_file.return_value = sentinel.pid_file - exists.return_value = True # The pid file is there - kill.side_effect = repeat(ProcessLookupError()) # The process isn't - self.assertFalse(helpers.is_cassandra_running()) - - @patch('os.kill') - @patch('os.path.exists') - @patch('helpers.get_pid_from_file') - def test_is_cassandra_running_wrong_user(self, get_pid_from_file, - exists, kill): - # get_pid_from_file raises a ValueError if the pid is illegal. - get_pid_from_file.return_value = sentinel.pid_file - exists.return_value = True # The pid file is there - kill.side_effect = repeat(PermissionError()) # But the process isn't - self.assertRaises(PermissionError, helpers.is_cassandra_running) - - @patch('time.sleep') - @patch('os.kill') - @patch('helpers.get_pid_from_file') - @patch('subprocess.call') - def test_is_cassandra_running_starting_up(self, call, get_pid_from_file, - kill, sleep): - sleep.return_value = None # Don't actually sleep in unittests. - os.kill.return_value = True # There is a running pid. - get_pid_from_file.return_value = 42 - subprocess.call.side_effect = iter([3, 2, 1, 0]) # 4th time the charm - self.assertTrue(helpers.is_cassandra_running()) - - @patch('helpers.backoff') - @patch('os.kill') - @patch('subprocess.call') - @patch('helpers.get_pid_from_file') - def test_is_cassandra_running_shutting_down(self, get_pid_from_file, - call, kill, backoff): - # If Cassandra is in the process of shutting down, it might take - # several failed checks before the pid file disappears. - backoff.return_value = repeat(True) - os.kill.return_value = None # The process is running - call.return_value = 1 # But nodetool is not succeeding. - - # Fourth time, the pid file is gone. - get_pid_from_file.side_effect = iter([42, 42, 42, - FileNotFoundError('Whoops')]) - self.assertFalse(helpers.is_cassandra_running()) - - @patch('os.kill') - @patch('subprocess.call') - @patch('os.path.exists') - @patch('helpers.get_pid_from_file') - def test_is_cassandra_running_failsafe(self, get_pid_from_file, - exists, subprocess_call, kill): - get_pid_from_file.return_value = sentinel.pid_file - exists.return_value = True # The pid file is there - subprocess_call.side_effect = repeat(RuntimeError('whoops')) - # Weird errors are reraised. - self.assertRaises(RuntimeError, helpers.is_cassandra_running) - - @patch('helpers.get_cassandra_version') - @patch('helpers.query') - def test_get_auth_keyspace_replication(self, query, ver): - ver.return_value = '2.2' - query.return_value = [('{"json": true}',)] - settings = helpers.get_auth_keyspace_replication(sentinel.session) - self.assertDictEqual(settings, dict(json=True)) - query.assert_called_once_with( - sentinel.session, dedent('''\ - SELECT strategy_options FROM system.schema_keyspaces - WHERE keyspace_name='system_auth' - '''), ConsistencyLevel.QUORUM) - - @patch('helpers.get_cassandra_version') - @patch('helpers.query') - def test_get_auth_keyspace_replication_30(self, query, ver): - ver.return_value = '3.0' - query.return_value = [({"json": True},)] # Decoded under 3.0 - settings = helpers.get_auth_keyspace_replication(sentinel.session) - self.assertDictEqual(settings, dict(json=True)) - query.assert_called_once_with( - sentinel.session, dedent('''\ - SELECT replication FROM system_schema.keyspaces - WHERE keyspace_name='system_auth' - '''), ConsistencyLevel.QUORUM) - - @patch('helpers.status_set') - @patch('charmhelpers.core.hookenv.status_get') - @patch('helpers.query') - def test_set_auth_keyspace_replication(self, query, - status_get, status_set): - status_get.return_value = ('active', '') - settings = dict(json=True) - helpers.set_auth_keyspace_replication(sentinel.session, settings) - query.assert_called_once_with(sentinel.session, - 'ALTER KEYSPACE system_auth ' - 'WITH REPLICATION = %s', - ConsistencyLevel.ALL, (settings,)) - - @patch('helpers.status_set') - @patch('charmhelpers.core.hookenv.status_get') - @patch('helpers.nodetool') - def test_repair_auth_keyspace(self, nodetool, status_get, status_set): - status_get.return_value = (sentinel.status, '') - helpers.repair_auth_keyspace() - status_set.assert_called_once_with(sentinel.status, - 'Repairing system_auth keyspace') - # The repair operation may still fail, and I am currently regularly - # seeing 'snapshot creation' errors. Repair also takes ages with - # Cassandra 2.0. So retry until success, up to 1 hour. - nodetool.assert_called_once_with('repair', 'system_auth', timeout=3600) - - def test_is_bootstrapped(self): - self.assertFalse(helpers.is_bootstrapped()) - helpers.set_bootstrapped() - self.assertTrue(helpers.is_bootstrapped()) - - @patch('helpers.get_node_status') - def test_is_decommissioned(self, get_node_status): - get_node_status.return_value = 'DECOMMISSIONED' - self.assertTrue(helpers.is_decommissioned()) - get_node_status.return_value = 'LEAVING' - self.assertTrue(helpers.is_decommissioned()) - get_node_status.return_value = 'NORMAL' - self.assertFalse(helpers.is_decommissioned()) - - @patch('helpers.nodetool') - def test_emit_describe_cluster(self, nodetool): - helpers.emit_describe_cluster() - nodetool.assert_called_once_with('describecluster') - - @patch('helpers.nodetool') - def test_emit_status(self, nodetool): - helpers.emit_status() - nodetool.assert_called_once_with('status') - - @patch('helpers.nodetool') - def test_emit_netstats(self, nodetool): - helpers.emit_netstats() - nodetool.assert_called_once_with('netstats') - - def test_week_spread(self): - # The first seven units run midnight on different days. - for i in range(0, 7): # There is no unit 0 - with self.subTest(unit=i): - self.assertTupleEqual(helpers.week_spread(i), (i, 0, 0)) - - # The next seven units run midday on different days. - for i in range(7, 14): - with self.subTest(unit=i): - self.assertTupleEqual(helpers.week_spread(i), (i - 7, 12, 0)) - - # And the next seven units at 6 am on different days. - for i in range(14, 21): - with self.subTest(unit=i): - self.assertTupleEqual(helpers.week_spread(i), (i - 14, 6, 0)) - - # This keeps going as best we can, subdividing the hours. - self.assertTupleEqual(helpers.week_spread(811), (6, 19, 18)) - - # The granularity is 1 minute, so eventually we wrap after about - # 7000 units. - self.assertTupleEqual(helpers.week_spread(0), (0, 0, 0)) - for i in range(1, 7168): - with self.subTest(unit=i): - self.assertNotEqual(helpers.week_spread(i), (0, 0, 0)) - self.assertTupleEqual(helpers.week_spread(7168), (0, 0, 0)) - - def test_local_plugins_dir(self): - self.assertEqual(helpers.local_plugins_dir(), - '/usr/local/lib/nagios/plugins') - - def test_update_hosts_file_new_entry(self): - org = dedent("""\ - 127.0.0.1 localhost - 10.0.1.2 existing - """) - new = dedent("""\ - 127.0.0.1 localhost - 10.0.1.2 existing - 10.0.1.3 newname - """) - with tempfile.NamedTemporaryFile(mode='w') as f: - f.write(org) - f.flush() - m = {'10.0.1.3': 'newname'} - helpers.update_hosts_file(f.name, m) - self.assertEqual(new.strip(), open(f.name, 'r').read().strip()) - - def test_update_hosts_file_changed_entry(self): - org = dedent("""\ - 127.0.0.1 localhost - 10.0.1.2 existing - """) - new = dedent("""\ - 127.0.0.1 localhost - 10.0.1.3 existing - """) - with tempfile.NamedTemporaryFile(mode='w') as f: - f.write(org) - f.flush() - m = {'10.0.1.3': 'existing'} - helpers.update_hosts_file(f.name, m) - self.assertEqual(new.strip(), open(f.name, 'r').read().strip()) - - -class TestIsLxc(unittest.TestCase): - def test_is_lxc(self): - # Test the function runs under the current environmnet. - # Unfortunately we can't sanely test that it is returning the - # correct value - helpers.is_lxc() - - -if __name__ == '__main__': - unittest.main(verbosity=2) diff --git a/charms/trusty/cassandra/tests/test_integration.py b/charms/trusty/cassandra/tests/test_integration.py deleted file mode 100755 index 8d91bce..0000000 --- a/charms/trusty/cassandra/tests/test_integration.py +++ /dev/null @@ -1,620 +0,0 @@ -#!.venv3/bin/python3 -# -# Copyright 2015 Canonical Ltd. -# -# This file is part of the Cassandra Charm for Juju. -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 3, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranties of -# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR -# PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. - -import configparser -from functools import wraps -import glob -import http.server -from itertools import count -import logging -import multiprocessing -import os -import socket -import subprocess -import sys -import time -import unittest -import uuid -import warnings - -warnings.filterwarnings('ignore', 'The blist library is not available') - -import amulet.deployer -import amulet.helpers -from cassandra import Unavailable, ConsistencyLevel, AuthenticationFailed -from cassandra.auth import PlainTextAuthProvider -from cassandra.cluster import Cluster, NoHostAvailable -from cassandra.query import SimpleStatement -import yaml - -import helpers -from testing.amuletfixture import AmuletFixture - - -SERIES = os.environ.get('SERIES', 'trusty') - -WAIT_TIMEOUT = int(os.environ.get('AMULET_TIMEOUT', 3600)) - -ROOT = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir)) - - -class TestDeploymentBase(unittest.TestCase): - rf = 1 - deployment = None - - common_config = dict(max_heap_size='96M', - heap_newsize='4M') - test_config = dict() - - @classmethod - def setUpClass(cls): - deployment = AmuletFixture(series=SERIES) - deployment.setUp() - cls.deployment = deployment - - deployment.add('cassandra', units=cls.rf, - constraints=dict(mem="2G")) - deployment.expose('cassandra') # Tests need client access. - config = dict() - config.update(cls.common_config) - config.update(cls.test_config) # Test subclass overrides - deployment.configure('cassandra', config) - - deployment.add('storage', - 'cs:~stub/{}/storage'.format(SERIES)) - deployment.configure('storage', dict(provider='local')) - - # A stub client charm. - empty_path = os.path.abspath(os.path.join(os.path.dirname(__file__), - os.pardir, 'lib', - 'testcharms', 'empty')) - deployment.add('client', empty_path) - deployment.relate('cassandra:database', 'client:database') - deployment.relate('cassandra:database-admin', 'client:database-admin') - - # No official trusty branch of the nrpe-external-master charm, yet. - # This is a problem as it means tests may not be running against - # the lastest version. - deployment.add('nrpe', - 'cs:~stub/{}/nrpe-external-master' - ''.format(SERIES)) - deployment.relate('cassandra:nrpe-external-master', - 'nrpe:nrpe-external-master') - - deployment.deploy(timeout=WAIT_TIMEOUT) - - # Silence noise - we are testing the charm, not the Cassandra - # driver. - cassandra_log = logging.getLogger('cassandra') - cassandra_log.setLevel(logging.CRITICAL) - - @classmethod - def tearDownClass(cls): - cls.deployment.tearDown() - cls.deployment = None - - def juju_status(self): - status_yaml = subprocess.check_output(['juju', 'status', - '--format=yaml']) - if not status_yaml.strip(): - return None - return yaml.safe_load(status_yaml) - - def cluster(self, username=None, password=None, hosts=None, port=9042): - status = self.juju_status() - - if username is None or password is None: - # Get some valid credentials - unit's superuser account will do. - unit = sorted(status['services']['cassandra']['units'].keys())[0] - cqlshrc_path = helpers.get_cqlshrc_path() - cqlshrc = configparser.ConfigParser(interpolation=None) - cqlshrc.read_string( - self.deployment.sentry[unit].file_contents(cqlshrc_path)) - username = cqlshrc['authentication']['username'] - password = cqlshrc['authentication']['password'] - - auth_provider = PlainTextAuthProvider(username=username, - password=password) - - if hosts is None: - # Get the IP addresses - hosts = [] - for unit, d in status['services']['cassandra']['units'].items(): - hosts.append(d['public-address']) - cluster = Cluster(hosts, auth_provider=auth_provider, port=port) - self.addCleanup(cluster.shutdown) - return cluster - - def session(self): - '''A session using the server's superuser credentials.''' - session = self.cluster().connect() - self.addCleanup(session.shutdown) - return session - - def client_session(self, relname): - '''A session using the client's credentials. - - We currently just steal the client's credentials and use - them from the local machine, but we could tunnel through the - client with a little more effort. - ''' - relinfo = self.get_client_relinfo(relname) - self.assertIn('host', relinfo.keys()) - cluster = self.cluster(relinfo['username'], - relinfo['password'], - [relinfo['host']], - int(relinfo['native_transport_port'])) - session = cluster.connect() - self.addCleanup(session.shutdown) - return session - - keyspace_ids = count() - - def new_keyspace(self, session, rf=None): - if rf is None: - # We create a keyspace with a replication factor equal - # to the number of units. This ensures that all records - # are replicated to all nodes, and we can cofirm that - # all nodes are working by doing an insert with - # ConsistencyLevel.ALL. - rf = self.rf - keyspace = 'test{}'.format(next(TestDeploymentBase.keyspace_ids)) - q = SimpleStatement( - 'CREATE KEYSPACE {} WITH REPLICATION ='.format(keyspace) + - "{'class': 'SimpleStrategy', 'replication_factor': %s}", - consistency_level=ConsistencyLevel.ALL) - session.execute(q, (rf,)) - session.set_keyspace(keyspace) - return keyspace - - def get_client_relinfo(self, relname): - # We only need one unit, even if rf > 1 - s = self.deployment.sentry['cassandra'][0] - relinfo = s.relation(relname, 'client:{}'.format(relname)) - return relinfo - - def is_port_open(self, port): - status = self.juju_status() - detail = list(status['services']['cassandra']['units'].values())[0] - address = detail['public-address'] - rc = subprocess.call(['nc', '-z', '-w', '2', address, str(port)]) - return rc == 0 - - def reconfigure_cassandra(self, **overrides): - config = dict() - config.update(self.common_config) - config.update(self.test_config) - config.update(overrides) - self.deployment.configure('cassandra', config) - self.deployment.wait() - - -class Test1UnitDeployment(TestDeploymentBase): - """Tests run on both a single node cluster and a 3 node cluster.""" - rf = 1 - test_config = dict(jre='openjdk') - - def test_basics_unit_superuser(self): - # Basic tests using unit superuser credentials - session = self.session() - self.new_keyspace(session) - self._test_database_basics(session) - - def test_basics_client_relation(self): - # Create a keyspace using superuser credentials - super_session = self.session() - keyspace = self.new_keyspace(super_session) - - # Basic tests using standard client relation credentials. - session = self.client_session('database') - session.set_keyspace(keyspace) - self._test_database_basics(session) - - def test_basics_client_admin_relation(self): - # Basic tests using administrative client relation credentials. - session = self.client_session('database-admin') - self.new_keyspace(session) - self._test_database_basics(session) - - def _test_database_basics(self, session): - session.execute('CREATE TABLE Foo (x varchar PRIMARY KEY)') - - # Insert some data, ensuring that it has been stored on - # all of our juju units. Note that the replication factor - # of our keyspace has been set to the number of units we - # deployed. Because it might take a while for the cluster to get - # its act together, we retry this in a loop with a timeout. - timeout = time.time() + 120 - while True: - value = 'hello {}'.format(time.time()) - query = SimpleStatement( - "INSERT INTO Foo (x) VALUES (%s)", - consistency_level=ConsistencyLevel.ALL) - try: - session.execute(query, (value,)) - break - except Exception: - if time.time() > timeout: - raise - - # We can get the data out again. This isn't testing our charm, - # but nice to know anyway... - r = session.execute('SELECT * FROM Foo LIMIT 1') - self.assertTrue(r[0].x.startswith('hello')) - - def test_external_mount(self): - # Not only does this test migrating data from local disk to an - # external mount, it also exercises the rolling restart logic. - # If rf==1, the restart will happen in the - # storage-relation-changed hook as soon as the mount is ready. - # If rf > 1, the restart will happen in the - # cluster-relation-changed hook once the unit has determined - # that it is its turn to restart. - - # First, create a keyspace pre-migration so we can confirm the - # data was migrated rather than being reset to an empty system. - session = self.session() - keyspace = self.new_keyspace(session) - session.execute('CREATE TABLE dat (x varchar PRIMARY KEY)') - total = self.rf * 50 - q = SimpleStatement('INSERT INTO dat (x) VALUES (%s)') - for _ in range(0, total): - session.execute(q, (str(uuid.uuid1()),)) - session.shutdown() - - self.deployment.relate('cassandra:data', 'storage:data') - self.deployment.wait() - # Per Bug #1254766 and Bug #1254766, the sentry.wait() above - # will return before the hooks have actually finished running - # and data migrated. Instead, keep checking until our condition - # is met, or a timeout reached. - timeout = time.time() + 300 - for s in self.deployment.sentry['cassandra']: - unit = s.info['unit_name'] - unit_num = s.info['unit'] - with self.subTest(unit=unit): - while True: - # Attempting to diagnose Amulet failures. I suspect - # SSH host keys again, per Bug #802117 - try: - s.directory_contents('/') - except (subprocess.CalledProcessError, OSError): - self.skipTest('sentry[{!r}].directory_contents({!r}) ' - 'failed!'.format(unit, '/')) - parents = ['/srv', '/srv/cassandra_{}'.format(unit_num), - '/srv/cassandra_{}/cassandra'.format(unit_num)] - for path in parents: - try: - s.directory_contents('/srv') - except (subprocess.CalledProcessError, OSError): - raise AssertionError('Failed to scan {!r} on {}' - .format(path, unit)) - try: - contents = s.directory_contents( - '/srv/cassandra_{}/cassandra/data'.format( - unit_num)) - found = set(contents['directories']) - self.assertIn(keyspace, found) - self.assertIn('system', found) - break - except Exception: - if time.time() > timeout: - raise - time.sleep(5) - - # Confirm no data has been lost, which could happen if we badly - # shutdown and memtables were not flushed. - session = self.session() - session.set_keyspace(keyspace) - q = SimpleStatement('SELECT COUNT(*) FROM dat', - consistency_level=ConsistencyLevel.QUORUM) - results = session.execute(q) - self.assertEqual(results[0][0], total) - - def test_cluster_ports_closed(self): - # The internal Cassandra ports are protected by ufw firewall - # rules, and are closed to everyone except for peers and the - # force_seed_nodes list. This is required for security, since - # the protocols are unauthenticated. It also stops rogue nodes - # on failed units from rejoining the cluster and causing chaos. - self.assertFalse(self.is_port_open(7000), 'Storage port open') - self.assertFalse(self.is_port_open(7001), 'SSL Storage port open') - self.assertFalse(self.is_port_open(7199), 'JMX port open') - - def test_client_ports_open(self): - self.assertTrue(self.is_port_open(9042), 'Native trans port closed') - self.assertTrue(self.is_port_open(9160), 'Thrift RPC port closed') - - def test_default_superuser_account_closed(self): - cluster = self.cluster(username='cassandra', password='cassandra') - try: - cluster.connect() - self.fail('Default credentials not reset') - except NoHostAvailable as x: - for fail in x.errors.values(): - self.assertIsInstance(fail, AuthenticationFailed) - - def test_cqlsh(self): - unit = self.deployment.sentry['cassandra'][0].info['unit_name'] - subprocess.check_output(['juju', 'ssh', unit, - 'sudo -H cqlsh -e exit'], - stderr=subprocess.STDOUT) - - def test_z_add_and_drop_node(self): # 'z' to run this test last. - # We need to be able to add a node correctly into the ring, - # without an operator needing to repair keyspaces to ensure data - # is located on the expected nodes. - # To test this, first create a keyspace with rf==1 and put enough - # data in it so each node will have some. - cluster = self.cluster() - s = cluster.connect() - keyspace = self.new_keyspace(s, rf=1) - q = SimpleStatement('CREATE TABLE dat (x varchar PRIMARY KEY)', - consistency_level=ConsistencyLevel.ALL) - s.execute(q) - - total = self.rf * 50 - q = SimpleStatement('INSERT INTO dat (x) VALUES (%s)', - consistency_level=ConsistencyLevel.QUORUM) - for _ in range(0, total): - s.execute(q, (str(uuid.uuid1()),)) - cluster.shutdown() - - def count(expected): - until = time.time() + 180 - while True: - cluster = self.cluster() - try: - s = cluster.connect(keyspace) - results = s.execute(SimpleStatement( - 'SELECT count(*) FROM dat', - consistency_level=ConsistencyLevel.QUORUM)) - found = results[0][0] - if found == expected or time.time() > until: - return found - time.sleep(0.2) - except Unavailable: - if time.time() > until: - raise - finally: - cluster.shutdown() - - self.assertEqual(count(total), total) - - self.deployment.add_unit('cassandra') - self.deployment.wait() - status = self.juju_status() - unit = sorted(status['services']['cassandra']['units'].keys())[-1] - try: - self.assertEqual(count(total), total) - finally: - # When a node is dropped, it needs to decommission itself and - # move its data to the remaining nodes so no data is lost. - # Alas, per Bug #1417874 we can't yet do this with Juju. - # First, the node must be manually decommissioned before we - # remove the unit. - self._decommission(unit) - self.deployment.remove_unit(unit) - self.deployment.wait() - - self.assertEqual(count(total), total) - - def _decommission(self, unit): - until = time.time() + WAIT_TIMEOUT - while True: - try: - subprocess.check_output(['juju', 'run', '--unit', unit, - 'nodetool decommission'], - stderr=subprocess.STDOUT, - universal_newlines=True) - break - except subprocess.CalledProcessError: - if time.time() > until: - raise - - until = time.time() + WAIT_TIMEOUT - while True: - try: - cmd = ['juju', 'run', '--unit', unit, 'nodetool netstats'] - raw = subprocess.check_output(cmd, stderr=subprocess.STDOUT, - universal_newlines=True) - if 'Mode: DECOMMISSIONED' in raw: - return - if time.time() > until: - raise subprocess.TimeoutExpired(cmd, WAIT_TIMEOUT, raw) - except subprocess.CalledProcessError: - if time.time() > until: - raise - time.sleep(3) - - -class Test3UnitDeployment(Test1UnitDeployment): - """Tests run on a three node cluster.""" - rf = 3 - - -_jre_url = None - - -def _serve(cwd, host, port): - sys.stderr = open('/dev/null', 'w') - os.chdir(cwd) - httpd = http.server.HTTPServer((host, port), - http.server.SimpleHTTPRequestHandler) - httpd.serve_forever() - - -_procs = [] - - -def get_jre_url(): - '''Return the URL to the Oracle Java SE 8 Server Runtime tarball, or None. - - The tarball needs to be placed in ../lib. - - Spawns a web server as a subprocess to serve the file. - ''' - global _jre_url - if _jre_url is not None: - return _jre_url - - jre_dir = os.path.join(ROOT, 'lib') - - jre_tarballs = sorted(glob.glob(os.path.join(jre_dir, - 'server-jre-?u*.tar.gz'))) - if not jre_tarballs: - return None - - # Get the local IP address, only available via hackish means and - # quite possibly incorrect. - s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) - s.connect(('www.canonical.com', 80)) - host = s.getsockname()[0] - s.close() - - # Get a free port. - s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) - s.bind((host, 0)) - port = s.getsockname()[1] - s.close() - - p = multiprocessing.Process(target=_serve, args=(jre_dir, host, port), - daemon=True) - p.start() - _procs.append(p) - - _jre_url = 'http://{}:{}/{}'.format(host, port, - os.path.basename(jre_tarballs[-1])) - return _jre_url - - -class TestOracleJREDeployment(Test1UnitDeployment): - """Basic test with the Oracle JRE. - - Unfortunately these tests cannot be run by the automatic test runners, - as the Oracle JRE is protected from public download by Oracle's - click-through license agreement. - """ - rf = 1 - test_config = dict(jre='Oracle', edition='community', - private_jre_url=get_jre_url()) - - @classmethod - @unittest.skipUnless(get_jre_url(), 'No Oracle JRE tarballs available') - def setUpClass(cls): - super(TestOracleJREDeployment, cls).setUpClass() - - -class TestDSEDeployment(Test1UnitDeployment): - """Tests run a single node DataStax Enterprise cluster. - - Unfortunately these tests cannot be run by the automatic test - runners, as the DSE packages are not available for public download. - """ - rf = 1 - test_config = dict( - edition='DSE', # Forces Oracle JRE - install_sources=yaml.safe_dump([os.environ.get('DSE_SOURCE'), - 'ppa:stub/cassandra']), - install_keys=yaml.safe_dump([None, None]), - private_jre_url=get_jre_url()) - - @classmethod - @unittest.skipUnless(get_jre_url(), 'No Oracle JRE tarballs available') - @unittest.skipIf('DSE_SOURCE' not in os.environ, - 'DSE_SOURCE environment variable not configured') - def setUpClass(cls): - super(TestDSEDeployment, cls).setUpClass() - - -class TestAllowAllAuthenticatorDeployment(Test3UnitDeployment): - test_config = dict(authenticator='AllowAllAuthenticator') - - def cluster(self, username=None, password=None, hosts=None, port=9042): - '''A cluster using invalid credentials.''' - return super(TestAllowAllAuthenticatorDeployment, - self).cluster(username='wat', password='eva') - - def client_session(self, relname): - '''A session using invalid credentials.''' - relinfo = self.get_client_relinfo(relname) - self.assertIn('host', relinfo.keys()) - cluster = self.cluster('random', 'nonsense', - [relinfo['host']], - int(relinfo['native_transport_port'])) - session = cluster.connect() - self.addCleanup(session.shutdown) - return session - - test_default_superuser_account_closed = None - - -class Test20Deployment(Test1UnitDeployment): - """Tests run on a single node Apache Cassandra 2.0 cluster. - """ - rf = 1 - test_config = dict( - edition='community', - install_sources=yaml.safe_dump([ - 'ppa:stub/cassandra', - 'ppa:openjdk-r/ppa', - 'deb http://www.apache.org/dist/cassandra/debian 20x main']), - install_keys=yaml.safe_dump([None, None, None])) - - -class Test21Deployment(Test1UnitDeployment): - """Tests run on a single node Apache Cassandra 2.1 cluster. - """ - rf = 1 - test_config = dict( - edition='community', - install_sources=yaml.safe_dump([ - 'ppa:stub/cassandra', - 'ppa:openjdk-r/ppa', - 'deb http://www.apache.org/dist/cassandra/debian 21x main']), - install_keys=yaml.safe_dump([None, None, None])) - - -class Test30Deployment(Test1UnitDeployment): - """Tests run on a single node Apache Cassandra 3.0 cluster. - """ - rf = 1 - test_config = dict( - edition='community', - install_sources=yaml.safe_dump([ - 'ppa:stub/cassandra', - 'ppa:openjdk-r/ppa', - 'deb http://www.apache.org/dist/cassandra/debian 30x main']), - install_keys=yaml.safe_dump([None, None, None])) - - -# Bug #1417097 means we need to monkey patch Amulet for now. -real_juju = amulet.helpers.juju - - -@wraps(real_juju) -def patched_juju(args, env=None): - args = [str(a) for a in args] - return real_juju(args, env) - -amulet.helpers.juju = patched_juju -amulet.deployer.juju = patched_juju - - -if __name__ == '__main__': - unittest.main(verbosity=2) diff --git a/charms/trusty/cassandra/tests/tests.yaml b/charms/trusty/cassandra/tests/tests.yaml deleted file mode 100644 index fbbd7f0..0000000 --- a/charms/trusty/cassandra/tests/tests.yaml +++ /dev/null @@ -1,15 +0,0 @@ -bootstrap: true -reset: false -tests: "" -virtualenv: false -# sources: [] -# packages: [] -makefile: - - lint - - unittest - - Test1UnitDeployment - - Test3UnitDeployment - - Test20Deployment - - Test21Deployment - - Test30Deployment - - TestAllowAllAuthenticatorDeployment |
