New python script to check openstack deployment

This is a crucial part of functest env prepare.
The former check_os.sh is missing some error
control and is sometimes trying to connect to an
empty endpoint if the sed/awk commands were wrong.
This python script is more robust in that sense.
You can see an example of execution in [1].

[1] http://paste.openstack.org/raw/614852/

Change-Id: I622befa13b58d2d31a08d307befb12a2be28fe4d
Signed-off-by: jose.lausuch <jose.lausuch@ericsson.com>

1 files changed, 163 insertions, 0 deletions

diff --git a/functest/ci/check_deployment.py b/functest/ci/check_deployment.py
new file mode 100644
index 000000000..fe20dc8f1
--- /dev/null
+++ b/functest/ci/check_deployment.py
@@ -0,0 +1,163 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2017 Ericsson 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
+
+"""
+OpenStack deployment checker
+
+Verifies that:
+ - Credentials file is given and contains the right information
+ - OpenStack endpoints are reachable
+"""
+
+import logging
+import logging.config
+import os
+import pkg_resources
+import socket
+import time
+from urlparse import urlparse
+
+from snaps.openstack.utils import glance_utils
+from snaps.openstack.utils import keystone_utils
+from snaps.openstack.utils import neutron_utils
+from snaps.openstack.utils import nova_utils
+from snaps.openstack.tests import openstack_tests
+
+__author__ = "Jose Lausuch <jose.lausuch@ericsson.com>"
+
+LOGGER = logging.getLogger(__name__)
+
+
+def verify_connectivity(adress, port, timeout=10):
+    """ Returns true if an ip/port is reachable"""
+    connection = socket.socket()
+    count = 0
+    while count < timeout:
+        try:
+            connection.connect((adress, port))
+            LOGGER.debug('%s:%s is reachable!', adress, port)
+            return True
+        except socket.error:
+            count += 1
+            time.sleep(1)
+            continue
+    LOGGER.error('%s:%s is not reachable.', adress, port)
+    return False
+
+
+class CheckDeployment(object):
+    """ Check deployment class."""
+
+    def __init__(self, rc_file='/home/opnfv/functest/conf/openstack.creds'):
+        self.rc_file = rc_file
+        self.services = ('compute', 'network', 'image')
+        self.os_creds = None
+
+    def check_rc(self):
+        """ Check if RC file exists and contains OS_AUTH_URL """
+        if not os.path.isfile(self.rc_file):
+            raise IOError('RC file {} does not exist!'.format(self.rc_file))
+        if 'OS_AUTH_URL' not in open(self.rc_file).read():
+            raise SyntaxError('OS_AUTH_URL not defined in {}.'.
+                              format(self.rc_file))
+
+    def check_auth_endpoint(self):
+        """ Verifies connectivity to the OS_AUTH_URL given in the RC file """
+        rc_endpoint = self.os_creds.auth_url
+        if not (verify_connectivity(urlparse(rc_endpoint).hostname,
+                                    urlparse(rc_endpoint).port)):
+            raise Exception("OS_AUTH_URL {} is not reachable.".
+                            format(rc_endpoint))
+        LOGGER.info("Connectivity to OS_AUTH_URL %s ...OK", rc_endpoint)
+
+    def check_public_endpoint(self):
+        """ Gets the public endpoint and verifies connectivity to it """
+        public_endpoint = keystone_utils.get_endpoint(self.os_creds,
+                                                      'identity',
+                                                      interface='public')
+        if not (verify_connectivity(urlparse(public_endpoint).hostname,
+                                    urlparse(public_endpoint).port)):
+            raise Exception("Public endpoint {} is not reachable.".
+                            format(public_endpoint))
+        LOGGER.info("Connectivity to the public endpoint %s ...OK",
+                    public_endpoint)
+
+    def check_service_endpoint(self, service):
+        """ Verifies connectivity to a given openstack service """
+        endpoint = keystone_utils.get_endpoint(self.os_creds,
+                                               service,
+                                               interface='public')
+        if not (verify_connectivity(urlparse(endpoint).hostname,
+                                    urlparse(endpoint).port)):
+            raise Exception("{} endpoint {} is not reachable.".
+                            format(service, endpoint))
+        LOGGER.info("Connectivity to endpoint '%s' %s ...OK",
+                    service, endpoint)
+
+    def check_nova(self):
+        """ checks that a simple nova operation works """
+        try:
+            client = nova_utils.nova_client(self.os_creds)
+            client.servers.list()
+            LOGGER.info("Nova service ...OK")
+        except Exception as error:
+            LOGGER.error("Nova service ...FAILED")
+            raise error
+
+    def check_neutron(self):
+        """ checks that a simple neutron operation works """
+        try:
+            client = neutron_utils.neutron_client(self.os_creds)
+            client.list_networks()
+            LOGGER.info("Neutron service ...OK")
+        except Exception as error:
+            LOGGER.error("Neutron service ...FAILED")
+            raise error
+
+    def check_glance(self):
+        """ checks that a simple glance operation works """
+        try:
+            client = glance_utils.glance_client(self.os_creds)
+            client.images.list()
+            LOGGER.info("Glance service ...OK")
+        except Exception as error:
+            LOGGER.error("Glance service ...FAILED")
+            raise error
+
+    def check_all(self):
+        """
+        Calls all the class functions and returns 0 if all of them succeed.
+        This is the method called by prepare_env or CLI
+        """
+        self.check_rc()
+        try:
+            self.os_creds = openstack_tests.get_credentials(
+                os_env_file=self.rc_file,
+                proxy_settings_str=None,
+                ssh_proxy_cmd=None)
+        except:
+            raise Exception("Problem while getting credentials object.")
+        if self.os_creds is None:
+            raise Exception("Credentials is None.")
+        self.check_auth_endpoint()
+        self.check_public_endpoint()
+        for service in self.services:
+            self.check_service_endpoint(service)
+        self.check_nova()
+        self.check_neutron()
+        self.check_glance()
+        return 0
+
+
+def main():
+    """Entry point"""
+    logging.config.fileConfig(pkg_resources.resource_filename(
+        'functest', 'ci/logging.ini'))
+    deployment = CheckDeployment()
+    return deployment.check_all()