remove enable_persistency from configuration.

Persistency wont be optional.
This parameter was not used so far thus is simply removed, without deprecating it.

Change-Id: I44baad84429c552b87364fa6659ca2ee193bef58

devstack/gate_hook.sh

@@ -69,9 +69,6 @@ changes_interval = 5
 
 [datasources]
 snapshots_interval = 120
-
-[persistency]
-enable_persistency=true
 EOF
 )"
 

devstack/gate_hook_mock.sh

@@ -60,9 +60,6 @@ volumes_per_instance=2
 vitrage_alarms_per_instance=0
 tripleo_controllers=3
 zabbix_alarms_per_controller=1
-
-[persistency]
-enable_persistency=true
 EOF
 )"
 

vitrage/entity_graph/graph_persistency.py

@@ -33,12 +33,8 @@ class GraphPersistency(object):
         self.conf = conf
         self.db = db
         self.graph = graph
-        self.enabled = conf.persistency.enable_persistency
 
     def store_graph(self):
-        if not self.enabled:
-            return
-
         LOG.info('Persisting graph...')
         try:
             last_event_id = self.db.events.get_last_event_id()
@@ -59,8 +55,6 @@ class GraphPersistency(object):
         return t
 
     def query_recent_snapshot(self):
-        if not self.enabled:
-            return
         timestamp = self._recent_snapshot_time()
         return self.db.graph_snapshots.query(timestamp=timestamp)
 
@@ -88,11 +82,9 @@ class GraphPersistency(object):
 
     def persist_event(self, before, current, is_vertex, graph, event_id=None):
         """Callback subscribed to driver.graph updates"""
-        if not self.enabled or\
-                not self.is_important_change(before,
-                                             current,
-                                             VProps.UPDATE_TIMESTAMP,
-                                             VProps.VITRAGE_SAMPLE_TIMESTAMP):
+        if not self.is_important_change(
+                before, current, VProps.UPDATE_TIMESTAMP,
+                VProps.VITRAGE_SAMPLE_TIMESTAMP):
             return
 
         if is_vertex:

vitrage/persistency/__init__.py

@@ -17,9 +17,5 @@ from oslo_config import cfg
 OPTS = [
     cfg.StrOpt('persistor_topic',
                default='vitrage_persistor',
-               help='The topic on which event will be sent from the '
-                    'datasources to the persistor'),
-    cfg.BoolOpt('enable_persistency',
-                default=False,
-                help='Periodically store entity graph snapshot to database'),
+               help='persistor will listen on this topic for events to store'),
     ]

vitrage/tests/functional/entity_graph/graph_persistor/test_graph_persistor.py

@@ -34,7 +34,6 @@ class TestGraphPersistor(TestFunctionalBase, TestConfiguration):
         cls.conf = cfg.ConfigOpts()
         cls.conf.register_opts(cls.PROCESSOR_OPTS, group='entity_graph')
         cls.conf.register_opts(cls.DATASOURCES_OPTS, group='datasources')
-        cls.conf.register_opts(cls.PERSISTENCY_OPTS, group='persistency')
         cls.add_db(cls.conf)
         cls.load_datasources(cls.conf)
         graph_persistency.EPSILON = 0.1

vitrage/tests/unit/entity_graph/base.py

@@ -60,13 +60,6 @@ class TestEntityGraphUnitBase(base.BaseTest):
                    min=1)
     ]
 
-    PERSISTENCY_OPTS = [
-        cfg.StrOpt('persistor_topic',
-                   default=None),
-        cfg.BoolOpt('enable_persistency',
-                    default=True),
-    ]
-
     NUM_CLUSTERS = 1
     NUM_ZONES = 2
     NUM_HOSTS = 4