Live migration support determination in rally

Live migration test cases were excluded if tempest was not executed
before rally since tempest config file is created during the execution
of tempest.

Remove the dependency to config file and define the support based on
the number of computes as done in tempest.

Change-Id: I57c18b7c57e6a4bc8bfbdfb4beb5f8d67c6269c4
Signed-off-by: Juha Kosonen <juha.kosonen@nokia.com>

1 files changed, 11 insertions, 20 deletions

diff --git a/functest/opnfv_tests/openstack/rally/rally.py b/functest/opnfv_tests/openstack/rally/rally.py
index e92639b2..c295b05a 100644
--- a/functest/opnfv_tests/openstack/rally/rally.py
+++ b/functest/opnfv_tests/openstack/rally/rally.py
@@ -20,7 +20,6 @@ import subprocess
 import time
 import uuid
 
-import iniparse
 import pkg_resources
 import yaml
 
@@ -74,8 +73,6 @@ class RallyBase(testcase.TestCase):
     ITERATIONS_AMOUNT = 10
     CONCURRENCY = 4
     RESULTS_DIR = os.path.join(CONST.__getattribute__('dir_results'), 'rally')
-    TEMPEST_CONF_FILE = os.path.join(CONST.__getattribute__('dir_results'),
-                                     'tempest/tempest.conf')
     BLACKLIST_FILE = os.path.join(RALLY_DIR, "blacklist.txt")
     TEMP_DIR = os.path.join(RALLY_DIR, "var")
 
@@ -117,6 +114,7 @@ class RallyBase(testcase.TestCase):
         self.start_time = None
         self.result = None
         self.details = None
+        self.compute_cnt = 0
 
     def _build_task_args(self, test_file_name):
         task_args = {'service_list': [test_file_name]}
@@ -167,7 +165,7 @@ class RallyBase(testcase.TestCase):
         if not os.path.exists(self.TEMP_DIR):
             os.makedirs(self.TEMP_DIR)
 
-        self.apply_blacklist(scenario_file_name, test_file_name)
+        self._apply_blacklist(scenario_file_name, test_file_name)
         return test_file_name
 
     @staticmethod
@@ -205,16 +203,10 @@ class RallyBase(testcase.TestCase):
 
         return True
 
-    @staticmethod
-    def live_migration_supported():
+    def _live_migration_supported(self):
         """Determine if live migration is supported."""
-        config = iniparse.ConfigParser()
-        if (config.read(RallyBase.TEMPEST_CONF_FILE) and
-                config.has_section('compute-feature-enabled') and
-                config.has_option('compute-feature-enabled',
-                                  'live_migration')):
-            return config.getboolean('compute-feature-enabled',
-                                     'live_migration')
+        if self.compute_cnt > 1:
+            return True
 
         return False
 
@@ -273,8 +265,7 @@ class RallyBase(testcase.TestCase):
         else:
             return False
 
-    @staticmethod
-    def excl_func():
+    def excl_func(self):
         """Exclude functionalities."""
         black_tests = []
         func_list = []
@@ -283,7 +274,7 @@ class RallyBase(testcase.TestCase):
             with open(RallyBase.BLACKLIST_FILE, 'r') as black_list_file:
                 black_list_yaml = yaml.safe_load(black_list_file)
 
-            if not RallyBase.live_migration_supported():
+            if not self._live_migration_supported():
                 func_list.append("no_live_migration")
 
             if 'functionality' in black_list_yaml.keys():
@@ -298,15 +289,14 @@ class RallyBase(testcase.TestCase):
 
         return black_tests
 
-    @staticmethod
-    def apply_blacklist(case_file_name, result_file_name):
+    def _apply_blacklist(self, case_file_name, result_file_name):
         """Apply blacklist."""
         LOGGER.debug("Applying blacklist...")
         cases_file = open(case_file_name, 'r')
         result_file = open(result_file_name, 'w')
 
-        black_tests = list(set(RallyBase.excl_func() +
-                               RallyBase.excl_scenario()))
+        black_tests = list(set(self.excl_func() +
+                               self.excl_scenario()))
 
         if black_tests:
             LOGGER.debug("Blacklisted tests: " + str(black_tests))
@@ -483,6 +473,7 @@ class RallyBase(testcase.TestCase):
         self.flavor_name = self.FLAVOR_NAME + self.guid
         self.flavor_alt_name = self.FLAVOR_ALT_NAME + self.guid
         self.ext_net_name = snaps_utils.get_ext_net_name(self.os_creds)
+        self.compute_cnt = snaps_utils.get_active_compute_cnt(self.os_creds)
 
         LOGGER.debug("Creating image '%s'...", self.image_name)
         image_creator = deploy_utils.create_image(