Use olso.log directly

As the openstack/common is deprecated, Watcher should use oslo lib
directly to run in the openstack env. So there is much work to do
with oslo. This patch fixed the log part.

Change-Id: I3145a842fe3a22b3d08fec60d180329073edd50f

watcher/common/messaging/events/event_dispatcher.py

@@ -14,9 +14,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from oslo_log import log
 
 from watcher.decision_engine.framework.messaging.events import Events
-from watcher.openstack.common import log
 
 LOG = log.getLogger(__name__)
 

watcher/common/messaging/messaging_core.py

@@ -16,7 +16,7 @@
 
 
 from oslo_config import cfg
-
+from oslo_log import log
 from watcher.common.messaging.events.event_dispatcher import \
     EventDispatcher
 from watcher.common.messaging.messaging_handler import \
@@ -24,7 +24,6 @@ from watcher.common.messaging.messaging_handler import \
 from watcher.common.rpc import RequestContextSerializer
 
 from watcher.objects.base import WatcherObjectSerializer
-from watcher.openstack.common import log
 
 LOG = log.getLogger(__name__)
 CONF = cfg.CONF

watcher/common/messaging/messaging_handler.py

@@ -16,13 +16,13 @@
 
 import eventlet
 from oslo_config import cfg
+from oslo_log import log
 import oslo_messaging as om
 from threading import Thread
 from watcher.common.messaging.utils.transport_url_builder import \
     TransportUrlBuilder
 from watcher.common.rpc import JsonPayloadSerializer
 from watcher.common.rpc import RequestContextSerializer
-from watcher.openstack.common import log
 
 eventlet.monkey_patch()
 LOG = log.getLogger(__name__)

watcher/common/messaging/notification_handler.py

@@ -16,10 +16,10 @@
 
 import eventlet
 from oslo import messaging
+from oslo_log import log
 
 from watcher.common.messaging.utils.observable import \
     Observable
-from watcher.openstack.common import log
 
 
 eventlet.monkey_patch()

watcher/common/messaging/utils/observable.py

@@ -14,10 +14,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from oslo_log import log
 
 from watcher.common.messaging.utils.synchronization import \
     Synchronization
-from watcher.openstack.common import log
 
 LOG = log.getLogger(__name__)
 

watcher/common/messaging/utils/transport_url_builder.py

@@ -15,7 +15,7 @@
 # limitations under the License.
 
 from oslo_config import cfg
-from watcher.openstack.common import log
+from oslo_log import log
 
 LOG = log.getLogger(__name__)
 CONF = cfg.CONF