Enforce a versioned public identity endpoint

juju simply adds /auth/tokens to the public identity endpoint wich
fails vs an unversioned endpoint as currently advised. It enforces
a versioned endpoint till juju implements the right discovery.

It may be improved to detect the right API version instead of forcing
v3. But v2 is hugely deprecated and no longer used by all OPNFV
installers.

It also fixes errors/warnings listed by pylint.

Change-Id: I6e8ba4b2122c19629426530d2d34e51e1bc609ba
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

1 files changed, 21 insertions, 12 deletions

diff --git a/functest/opnfv_tests/vnf/epc/juju_epc.py b/functest/opnfv_tests/vnf/epc/juju_epc.py
index d9c14219e..be0f3ab21 100644
--- a/functest/opnfv_tests/vnf/epc/juju_epc.py
+++ b/functest/opnfv_tests/vnf/epc/juju_epc.py
@@ -15,14 +15,14 @@ import time
 import json
 import sys
 from copy import deepcopy
-import yaml
-import functest.utils.openstack_utils as os_utils
-import functest.core.vnf as vnf
-import pkg_resources
+from urlparse import urljoin
 
+import functest.core.vnf as vnf
 from functest.opnfv_tests.openstack.snaps import snaps_utils
 from functest.utils.constants import CONST
+import functest.utils.openstack_utils as os_utils
 
+import pkg_resources
 from snaps.openstack.os_credentials import OSCreds
 from snaps.openstack.create_network import (NetworkSettings,
                                             SubnetSettings, OpenStackNetwork)
@@ -31,12 +31,14 @@ from snaps.openstack.create_flavor import (FlavorSettings, OpenStackFlavor)
 from snaps.openstack.create_image import (ImageSettings, OpenStackImage)
 from snaps.openstack.tests import openstack_tests
 from snaps.openstack.utils import keystone_utils
+import yaml
 
 __author__ = "Amarendra Meher <amarendra@rebaca.com>"
 __author__ = "Soumaya K Nayek <soumaya.nayek@rebaca.com>"
 
 
 class JujuEpc(vnf.VnfOnBoarding):
+    # pylint:disable=too-many-instance-attributes
     """Abot EPC deployed with JUJU Orchestrator Case"""
 
     __logger = logging.getLogger(__name__)
@@ -94,6 +96,10 @@ class JujuEpc(vnf.VnfOnBoarding):
         self.glance_client = os_utils.get_glance_client()
         self.neutron_client = os_utils.get_neutron_client()
         self.nova_client = os_utils.get_nova_client()
+        self.sec_group_id = None
+        self.public_auth_url = None
+        self.creds = None
+        self.filename = None
 
     def prepare(self):
         """Prepare testcase (Additional pre-configuration steps)."""
@@ -104,6 +110,10 @@ class JujuEpc(vnf.VnfOnBoarding):
         self.__logger.info("Additional pre-configuration steps")
         self.public_auth_url = keystone_utils.get_endpoint(
             self.snaps_creds, 'identity')
+        # it enforces a versioned public identity endpoint as juju simply
+        # adds /auth/tokens wich fails vs an unversioned endpoint.
+        if not self.public_auth_url.endswith(('v3', 'v3/', 'v2.0', 'v2.0/')):
+            self.public_auth_url = urljoin(self.public_auth_url, 'v3')
 
         self.creds = {
             "tenant": self.tenant_name,
@@ -127,7 +137,7 @@ class JujuEpc(vnf.VnfOnBoarding):
         }
         self.__logger.info("Cloud DATA:  %s", cloud_data)
         self.filename = os.path.join(self.case_dir, 'abot-epc.yaml')
-        self.__logger.info("Cretae  %s to add cloud info", self.filename)
+        self.__logger.info("Create  %s to add cloud info", self.filename)
         write_config(self.filename, CLOUD_TEMPLATE, **cloud_data)
 
         if self.snaps_creds.identity_api_version == 3:
@@ -149,7 +159,7 @@ class JujuEpc(vnf.VnfOnBoarding):
                 image_creator.create()
                 self.created_object.append(image_creator)
 
-    def deploy_orchestrator(self):
+    def deploy_orchestrator(self):  # pylint: disable=too-many-locals
         """
         Create network, subnet, router
 
@@ -288,8 +298,7 @@ class JujuEpc(vnf.VnfOnBoarding):
                     count = count + 1
             os.system('juju-wait')
             return True
-        else:
-            return False
+        return False
 
     def test_vnf(self):
         """Run test on ABoT."""
@@ -455,8 +464,8 @@ def update_data(obj):
                 for tag in element['tags']:
                     element[tag['name']] = 1
 
-    except:
-        logging.error("Error in updating data, %s" % (sys.exc_info()[0]))
+    except Exception:  # pylint: disable=broad-except
+        logging.error("Error in updating data, %s", sys.exc_info()[0])
         raise
 
     return obj
@@ -467,8 +476,8 @@ def get_instance_metadata(nova_client, instance):
     try:
         instance = nova_client.servers.get(instance.id)
         return instance.metadata
-    except Exception as e:
-        logging.error("Error [get_instance_status(nova_client)]: %s" % e)
+    except Exception as exc:  # pylint: disable=broad-except
+        logging.error("Error [get_instance_status(nova_client)]: %s", exc)
         return None