Add API(v2) to create influxdb

JIRA: YARDSTICK-726

API: /api/v2/yardstick/containers/action
METHOD: POST
PARAMS:
{
    'action': 'create_influxdb',
    'args': {
        'environment_id': environment_id
    }
}

Change-Id: I20961fc6ae9918c894de7fabd3f81ca966bd24cd
Signed-off-by: chenjiankun <chenjiankun1@huawei.com>

1 files changed, 175 insertions, 0 deletions

diff --git a/api/resources/v2/containers.py b/api/resources/v2/containers.py
new file mode 100644
index 000000000..9219c7cac
--- /dev/null
+++ b/api/resources/v2/containers.py
@@ -0,0 +1,175 @@
+##############################################################################
+# Copyright (c) 2016 Huawei Technologies Co.,Ltd and others.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+from __future__ import absolute_import
+
+import logging
+import threading
+import time
+import uuid
+
+from six.moves import configparser
+from oslo_serialization import jsonutils
+from docker import Client
+
+from api import ApiResource
+from api.utils import influx
+from api.database.v2.handlers import V2ContainerHandler
+from api.database.v2.handlers import V2EnvironmentHandler
+from yardstick.common import constants as consts
+from yardstick.common import utils
+from yardstick.common.utils import result_handler
+from yardstick.common.utils import get_free_port
+
+
+LOG = logging.getLogger(__name__)
+LOG.setLevel(logging.DEBUG)
+
+environment_handler = V2EnvironmentHandler()
+container_handler = V2ContainerHandler()
+
+
+class V2Containers(ApiResource):
+
+    def post(self):
+        return self._dispatch_post()
+
+    def create_influxdb(self, args):
+        try:
+            environment_id = args['environment_id']
+        except KeyError:
+            return result_handler(consts.API_ERROR, 'environment_id must be provided')
+
+        try:
+            uuid.UUID(environment_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'invalid environment id')
+
+        try:
+            environment = environment_handler.get_by_uuid(environment_id)
+        except ValueError:
+            return result_handler(consts.API_ERROR, 'no such environment id')
+
+        container_info = environment.container_id
+        container_info = jsonutils.loads(container_info) if container_info else {}
+
+        if container_info.get('influxdb'):
+            return result_handler(consts.API_ERROR, 'influxdb container already exist')
+
+        name = 'influxdb-{}'.format(environment_id[:8])
+        port = get_free_port(consts.SERVER_IP)
+        container_id = str(uuid.uuid4())
+        LOG.info('%s will launch on : %s', name, port)
+
+        LOG.info('launch influxdb background')
+        args = (name, port, container_id)
+        thread = threading.Thread(target=self._create_influxdb, args=args)
+        thread.start()
+
+        LOG.info('record container in database')
+        container_init_data = {
+            'uuid': container_id,
+            'environment_id': environment_id,
+            'name': name,
+            'port': port,
+            'status': 0
+        }
+        container_handler.insert(container_init_data)
+
+        LOG.info('update container in environment')
+        container_info['influxdb'] = container_id
+        environment_info = {'container_id': jsonutils.dumps(container_info)}
+        environment_handler.update_attr(environment_id, environment_info)
+
+        return result_handler(consts.API_SUCCESS, {'uuid': container_id})
+
+    def _check_image_exist(self, client, t):
+        return any(t in a['RepoTags'][0]
+                   for a in client.images() if a['RepoTags'])
+
+    def _create_influxdb(self, name, port, container_id):
+        client = Client(base_url=consts.DOCKER_URL)
+
+        try:
+            LOG.info('Checking if influxdb image exist')
+            if not self._check_image_exist(client, '%s:%s' %
+                                           (consts.INFLUXDB_IMAGE,
+                                            consts.INFLUXDB_TAG)):
+                LOG.info('Influxdb image not exist, start pulling')
+                client.pull(consts.INFLUXDB_IMAGE, tag=consts.INFLUXDB_TAG)
+
+            LOG.info('Createing influxdb container')
+            container = self._create_influxdb_container(client, name, port)
+            LOG.info('Influxdb container is created')
+
+            time.sleep(5)
+
+            container = client.inspect_container(container['Id'])
+            ip = container['NetworkSettings']['Networks']['bridge']['IPAddress']
+            LOG.debug('container ip is: %s', ip)
+
+            LOG.info('Changing output to influxdb')
+            self._change_output_to_influxdb(ip, port)
+
+            LOG.info('Config influxdb')
+            self._config_influxdb(port)
+
+            container_handler.update_attr(container_id, 'status', 1)
+
+            LOG.info('Finished')
+        except Exception:
+            container_handler.update_attr(container_id, 'status', 2)
+            LOG.exception('Creating influxdb failed')
+
+    def _create_influxdb_container(self, client, name, port):
+
+        ports = [port]
+        port_bindings = {8086: port}
+        restart_policy = {"MaximumRetryCount": 0, "Name": "always"}
+        host_config = client.create_host_config(port_bindings=port_bindings,
+                                                restart_policy=restart_policy)
+
+        LOG.info('Creating container')
+        container = client.create_container(image='%s:%s' %
+                                            (consts.INFLUXDB_IMAGE,
+                                             consts.INFLUXDB_TAG),
+                                            ports=ports,
+                                            name=name,
+                                            detach=True,
+                                            tty=True,
+                                            host_config=host_config)
+        LOG.info('Starting container')
+        client.start(container)
+        return container
+
+    def _config_influxdb(self, port):
+        try:
+            client = influx.get_data_db_client()
+            client.create_user(consts.INFLUXDB_USER,
+                               consts.INFLUXDB_PASS,
+                               consts.INFLUXDB_DB_NAME)
+            client.create_database(consts.INFLUXDB_DB_NAME)
+            LOG.info('Success to config influxDB')
+        except Exception:
+            LOG.exception('Config influxdb failed')
+
+    def _change_output_to_influxdb(self, ip, port):
+        utils.makedirs(consts.CONF_DIR)
+
+        parser = configparser.ConfigParser()
+        LOG.info('Reading output sample configuration')
+        parser.read(consts.CONF_SAMPLE_FILE)
+
+        LOG.info('Set dispatcher to influxdb')
+        parser.set('DEFAULT', 'dispatcher', 'influxdb')
+        parser.set('dispatcher_influxdb', 'target',
+                   'http://{}:{}'.format(ip, port))
+
+        LOG.info('Writing to %s', consts.CONF_FILE)
+        with open(consts.CONF_FILE, 'w') as f:
+            parser.write(f)