network: listen for Quantum notifications

This fixes #1021775

Change-Id: I62d6ea6522afe15ffde731b0e8d8a37e4596fd70
Signed-off-by: Julien Danjou <julien@danjou.info>

ceilometer/network/notifications.py

@@ -0,0 +1,132 @@
+# -*- encoding: utf-8 -*-
+#
+# Copyright © 2012 New Dream Network, LLC (DreamHost)
+#
+# Author: Julien Danjou <julien@danjou.info>
+#
+# 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 Quantum notification
+   events.
+
+"""
+
+from ceilometer import counter
+from ceilometer import plugin
+from ceilometer.openstack.common import cfg
+
+
+OPTS = [
+    cfg.StrOpt('quantum_control_exchange',
+               default='quantum',
+               help="Exchange name for Quantum notifications"),
+]
+
+
+cfg.CONF.register_opts(OPTS)
+
+
+class NetworkNotificationBase(plugin.NotificationBase):
+
+    def get_event_types(self):
+        return [
+            '%s.create.end' % (self.resource_name, event),
+            '%s.update.end' % (self.resource_name, event),
+            '%s.delete.start' % (self.resource_name, event),
+        ]
+
+    @staticmethod
+    def get_exchange_topics(conf):
+        """Return a sequence of ExchangeTopics defining the exchange and
+        topics to be connected for this plugin."""
+        return [
+            plugin.ExchangeTopics(
+                exchange=conf.quantum_control_exchange,
+                topics=set(topic + ".info"
+                           for topic in conf.notification_topics)),
+        ]
+
+    def process_notification(self, message):
+        message['payload'] = message['payload'][self.resource_name]
+        return [
+            counter.Counter(source='?',
+                            name=self.resource_name,
+                            type='absolute',
+                            volume=1,
+                            user_id=message['_context_user_id'],
+                            project_id=message['payload']['tenant_id'],
+                            resource_id=message['payload']['id'],
+                            timestamp=message['timestamp'],
+                            duration=None,
+                            resource_metadata=self.notification_to_metadata(
+                                message),
+                        ),
+        ]
+
+
+class Network(NetworkNotificationBase):
+    """Listen for Quantum network notifications in order to mediate with the
+    metering framework.
+
+    """
+
+    metadata_keys = [
+        "status",
+        "subnets",
+        "name",
+        "router:external",
+        "admin_state_up",
+        "shared",
+    ]
+
+    resource_name = 'network'
+
+
+class Subnet(NetworkNotificationBase):
+    """Listen for Quantum notifications in order to mediate with the
+    metering framework.
+
+    """
+
+    metadata_keys = [
+        "name",
+        "enable_dhcp",
+        "network_id",
+        "dns_nameservers",
+        "allocation_pools",
+        "host_routes",
+        "ip_version",
+        "gateway_ip",
+        "cidr",
+    ]
+
+    resource_name = 'subnet'
+
+
+class Port(NetworkNotificationBase):
+    """Listen for Quantum notifications in order to mediate with the
+    metering framework.
+
+    """
+
+    metadata_keys = [
+        "status",
+        "name",
+        "admin_state_up",
+        "network_id",
+        "device_owner",
+        "mac_address",
+        "fixed_ips",
+        "device_id",
+    ]
+
+    resource_name = 'port'