Generic ceilometer notification listener module

Change-Id: I00be2bf7eb07d1352b4cc2e28e384736e1b363b4
diff --git a/xos/synchronizer/ceilometer/ceilometer-plugins/network/ext_services/cord/notifications.py b/xos/synchronizer/ceilometer/ceilometer-plugins/network/ext_services/cord/notifications.py
new file mode 100644
index 0000000..a832b01
--- /dev/null
+++ b/xos/synchronizer/ceilometer/ceilometer-plugins/network/ext_services/cord/notifications.py
@@ -0,0 +1,69 @@
+#
+# Copyright 2012 New Dream Network, LLC (DreamHost)
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+"""Handler for producing network counter messages from Neutron notification
+   events.
+
+"""
+
+import oslo_messaging
+from oslo_config import cfg
+
+from ceilometer.agent import plugin_base
+from oslo_log import log
+from ceilometer import sample
+
+OPTS = [
+    cfg.StrOpt('cord_control_exchange',
+               default='cord',
+               help="Exchange name for CORD related notifications."),
+]
+
+cfg.CONF.register_opts(OPTS)
+
+LOG = log.getLogger(__name__)
+
+
+class CORDNotificationBase(plugin_base.NotificationBase):
+
+    resource_name = None
+    event_types = ['cord*']
+
+    def get_targets(self,conf):
+        """Return a sequence of oslo.messaging.Target
+
+        This sequence is defining the exchange and topics to be connected for
+        this plugin.
+        """
+        LOG.info("get_targets for CORD Notification Listener")
+        return [oslo_messaging.Target(topic=topic,
+                                      exchange=conf.cord_control_exchange)
+                for topic in self.get_notification_topics(conf)]
+
+    def process_notification(self, message):
+        LOG.info('Received CORD notification')
+        if 'counter_type' not in message['payload']:
+            meter_type = sample.TYPE_GAUGE
+        else:
+            meter_type = sample.TYPE_GAUGE if 'gauge' in message['payload']['counter_type'].lower() else sample.TYPE_DELTA if 'delta' in message['payload']['counter_type'].lower() else sample.TYPE_GAUGE
+
+        yield sample.Sample.from_notification(
+            name=message['payload']['counter_name'],
+            type=meter_type,
+            unit=message['payload']['counter_unit'],
+            volume=message['payload']['counter_volume'],
+            user_id=message['payload']['user_id'],
+            project_id=message['payload']['tenant_id'],
+            resource_id=message['payload']['resource_id'],
+            message=message)