Move 'alarm_connection' to 'connection'

- Removes the specific alarm_connection option
- Simplify get_connection*() functions and hardcode the namespace

Change-Id: I9ac13c6e9356867a815e0b8afec4815916bf3a65

aodh/api/app.py

@@ -64,7 +64,7 @@ def setup_app(pecan_config=None, extra_hooks=None):
     # FIXME: Replace DBHook with a hooks.TransactionHook
     app_hooks = [hooks.ConfigHook(),
                  hooks.DBHook(
-                     storage.get_connection_from_config(cfg.CONF, 'alarm'),),
+                     storage.get_connection_from_config(cfg.CONF)),
                  hooks.TranslationHook()]
     if extra_hooks:
         app_hooks.extend(extra_hooks)

aodh/cmd/eventlet/storage.py

@@ -28,7 +28,7 @@ LOG = logging.getLogger(__name__)
 
 def dbsync():
     service.prepare_service()
-    storage.get_connection_from_config(cfg.CONF, 'alarm').upgrade()
+    storage.get_connection_from_config(cfg.CONF).upgrade()
 
 
 def expirer():
@@ -36,7 +36,7 @@ def expirer():
 
     if cfg.CONF.database.alarm_history_time_to_live > 0:
         LOG.debug("Clearing expired alarm history data")
-        storage_conn = storage.get_connection_from_config(cfg.CONF, 'alarm')
+        storage_conn = storage.get_connection_from_config(cfg.CONF)
         storage_conn.clear_expired_alarm_history_data(
             cfg.CONF.database.alarm_history_time_to_live)
     else:

aodh/storage/__init__.py

@@ -24,6 +24,8 @@ from stevedore import driver
 
 from aodh import utils
 
+_NAMESPACE = 'aodh.storage'
+
 
 LOG = log.getLogger(__name__)
 
@@ -38,11 +40,6 @@ cfg.CONF.register_opts(OLD_OPTS)
 
 
 OPTS = [
-    cfg.StrOpt('alarm_connection',
-               secret=True,
-               default=None,
-               help='The connection string used to connect to the alarm '
-               'database. (if unset, connection is used)'),
     cfg.IntOpt('alarm_history_time_to_live',
                default=-1,
                help=("Number of seconds that alarm histories are kept "
@@ -88,25 +85,19 @@ class StorageBadAggregate(Exception):
     code = 400
 
 
-def get_connection_from_config(conf, purpose='alarm'):
+def get_connection_from_config(conf):
     retries = conf.database.max_retries
 
     # Convert retry_interval secs to msecs for retry decorator
     @retrying.retry(wait_fixed=conf.database.retry_interval * 1000,
                     stop_max_attempt_number=retries if retries >= 0 else None)
     def _inner():
-        if conf.database_connection:
-            conf.set_override('connection', conf.database_connection,
-                              group='database')
-        namespace = 'aodh.%s.storage' % purpose
-        url = (getattr(conf.database, '%s_connection' % purpose) or
-               conf.database.connection)
-        return get_connection(url, namespace)
+        return get_connection(conf.database.connection)
 
     return _inner()
 
 
-def get_connection(url, namespace):
+def get_connection(url):
     """Return an open connection to the database."""
     connection_scheme = urlparse.urlparse(url).scheme
     # SqlAlchemy connections specify may specify a 'dialect' or
@@ -114,8 +105,8 @@ def get_connection(url, namespace):
     engine_name = connection_scheme.split('+')[0]
     # NOTE: translation not applied bug #1446983
     LOG.debug('looking for %(name)r driver in %(namespace)r',
-              {'name': engine_name, 'namespace': namespace})
-    mgr = driver.DriverManager(namespace, engine_name)
+              {'name': engine_name, 'namespace': _NAMESPACE})
+    mgr = driver.DriverManager(_NAMESPACE, engine_name)
     return mgr.driver(url)
 
 

aodh/tests/db.py

@@ -50,7 +50,7 @@ class MongoDbManager(fixtures.Fixture):
                 message='.*you must provide a username and password.*')
             try:
                 self.alarm_connection = storage.get_connection(
-                    self.url, 'aodh.alarm.storage')
+                    self.url)
             except storage.StorageBadVersion as e:
                 raise testcase.TestSkipped(six.text_type(e))
 
@@ -66,7 +66,7 @@ class SQLManager(fixtures.Fixture):
     def setUp(self):
         super(SQLManager, self).setUp()
         self.alarm_connection = storage.get_connection(
-            self.url, 'aodh.alarm.storage')
+            self.url)
 
     @property
     def url(self):
@@ -104,7 +104,7 @@ class HBaseManager(fixtures.Fixture):
     def setUp(self):
         super(HBaseManager, self).setUp()
         self.alarm_connection = storage.get_connection(
-            self.url, 'aodh.alarm.storage')
+            self.url)
         # Unique prefix for each test to keep data is distinguished because
         # all test data is stored in one table
         data_prefix = str(uuid.uuid4().hex)
@@ -141,7 +141,7 @@ class SQLiteManager(fixtures.Fixture):
     def setUp(self):
         super(SQLiteManager, self).setUp()
         self.alarm_connection = storage.get_connection(
-            self.url, 'aodh.alarm.storage')
+            self.url)
 
 
 class TestBase(testscenarios.testcase.WithScenarios, test_base.BaseTestCase):
@@ -193,7 +193,7 @@ class TestBase(testscenarios.testcase.WithScenarios, test_base.BaseTestCase):
         self.alarm_conn = None
         super(TestBase, self).tearDown()
 
-    def _get_connection(self, url, namespace):
+    def _get_connection(self, url):
         return self.alarm_conn
 
     def _get_driver_manager(self, engine):

aodh/tests/gabbi/fixtures.py

@@ -60,7 +60,7 @@ class ConfigFixture(fixture.GabbiFixture):
                           group='oslo_policy')
 
         database_name = '%s-%s' % (db_url, str(uuid.uuid4()))
-        conf.set_override('alarm_connection', database_name, group='database')
+        conf.set_override('connection', database_name, group='database')
 
         conf.set_override('pecan_debug', True, group='api')
 

aodh/tests/storage/test_get_connection.py

@@ -27,14 +27,12 @@ import six
 
 class EngineTest(base.BaseTestCase):
     def test_get_connection(self):
-        engine = storage.get_connection('log://localhost',
-                                        'aodh.alarm.storage')
+        engine = storage.get_connection('log://localhost')
         self.assertIsInstance(engine, impl_log.Connection)
 
     def test_get_connection_no_such_engine(self):
         try:
-            storage.get_connection('no-such-engine://localhost',
-                                   'aodh.metering.storage')
+            storage.get_connection('no-such-engine://localhost')
         except RuntimeError as err:
             self.assertIn('no-such-engine', six.text_type(err))
 
@@ -63,5 +61,5 @@ class ConnectionConfigTest(base.BaseTestCase):
 
     def test_only_default_url(self):
         self.CONF.set_override("connection", "log://", group="database")
-        conn = storage.get_connection_from_config(self.CONF, 'alarm')
+        conn = storage.get_connection_from_config(self.CONF)
         self.assertIsInstance(conn, impl_log.Connection)

setup.cfg

@@ -26,7 +26,7 @@ packages =
     aodh
 
 [entry_points]
-aodh.alarm.storage =
+aodh.storage =
     log = aodh.storage.impl_log:Connection
     mongodb = aodh.storage.impl_mongodb:Connection
     mysql = aodh.storage.impl_sqlalchemy:Connection

tools/test_hbase_table_utils.py

@@ -24,7 +24,7 @@ def main(argv):
         url = ("%s?table_prefix=%s" %
                (os.getenv("AODH_TEST_HBASE_URL"),
                 os.getenv("AODH_TEST_HBASE_TABLE_PREFIX", "test")))
-        alarm_conn = storage.get_connection(url, 'AODH.alarm.storage')
+        alarm_conn = storage.get_connection(url)
         for arg in argv:
             if arg == "--upgrade":
                 alarm_conn.upgrade()