publisher.rpc: make per counter topic optional

Fixes: bug#1133206

Change-Id: Id56b4f367647f313de23b639991827723cb18d47

ceilometer/publisher/__init__.py

@@ -20,7 +20,7 @@
 
 import abc
 from stevedore import driver
-import urlparse
+from ceilometer.openstack.common import network_utils
 
 
 def get_publisher(url, namespace='ceilometer.publisher'):
@@ -29,7 +29,7 @@ def get_publisher(url, namespace='ceilometer.publisher'):
     :param URL: URL for the publisher
     :param namespace: Namespace to use to look for drivers.
     """
-    parse_result = urlparse.urlparse(url)
+    parse_result = network_utils.urlsplit(url)
     loaded_driver = driver.DriverManager(namespace, parse_result.scheme)
     return loaded_driver.driver(parse_result)
 

ceilometer/publisher/rpc.py

@@ -21,7 +21,9 @@
 import hashlib
 import hmac
 import itertools
+import operator
 import uuid
+import urlparse
 
 from oslo.config import cfg
 
@@ -103,12 +105,19 @@ def meter_message_from_counter(counter, secret, source):
 
 
 class RPCPublisher(publisher.PublisherBase):
-    def publish_counters(self, context, counters, source):
-        """Send a metering message for publishing
 
-        :param context: Execution context from the service or RPC call
-        :param counter: Counter from pipeline after transformation
-        :param source: counter source
+    def __init__(self, parsed_url):
+        options = urlparse.parse_qs(parsed_url.query)
+        self.per_meter_topic = bool(int(
+            options.get('per_meter_topic', [0])[-1]))
+
+    def publish_counters(self, context, counters, source):
+        """Publish counters on RPC.
+
+        :param context: Execution context from the service or RPC call.
+        :param counters: Counters from pipeline after transformation.
+        :param source: Counter source.
+
         """
 
         meters = [
@@ -125,15 +134,20 @@ class RPCPublisher(publisher.PublisherBase):
             'version': '1.0',
             'args': {'data': meters},
         }
-        LOG.debug('PUBLISH: %s', str(msg))
+        LOG.audit('Publishing %d counters on %s',
+                  len(msg['args']['data']), topic)
         rpc.cast(context, topic, msg)
 
-        for meter_name, meter_list in itertools.groupby(
-                sorted(meters, key=lambda m: m['counter_name']),
-                lambda m: m['counter_name']):
-            msg = {
-                'method': 'record_metering_data',
-                'version': '1.0',
-                'args': {'data': list(meter_list)},
-            }
-            rpc.cast(context, topic + '.' + meter_name, msg)
+        if self.per_meter_topic:
+            for meter_name, meter_list in itertools.groupby(
+                    sorted(meters, key=operator.itemgetter('counter_name')),
+                    operator.itemgetter('counter_name')):
+                msg = {
+                    'method': 'record_metering_data',
+                    'version': '1.0',
+                    'args': {'data': list(meter_list)},
+                }
+                topic_name = topic + '.' + meter_name
+                LOG.audit('Publishing %d counters on %s',
+                          len(msg['args']['data']), topic_name)
+                rpc.cast(context, topic_name, msg)

tests/publisher/test_rpc_publisher.py

@@ -3,6 +3,7 @@
 # Copyright © 2012 New Dream Network, LLC (DreamHost)
 #
 # Author: Doug Hellmann <doug.hellmann@dreamhost.com>
+#         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
@@ -24,6 +25,7 @@ from oslo.config import cfg
 
 from ceilometer import counter
 from ceilometer.openstack.common import jsonutils
+from ceilometer.openstack.common import network_utils
 from ceilometer.openstack.common import rpc as oslo_rpc
 from ceilometer.publisher import rpc
 from ceilometer.tests import base
@@ -255,12 +257,24 @@ class TestPublish(base.TestCase):
         super(TestPublish, self).setUp()
         self.published = []
         self.stubs.Set(oslo_rpc, 'cast', self.faux_cast)
-        publisher = rpc.RPCPublisher(None)
+
+    def test_published(self):
+        publisher = rpc.RPCPublisher(
+            network_utils.urlsplit('rpc://'))
         publisher.publish_counters(None,
                                    self.test_data,
                                    'test')
+        self.assertEqual(len(self.published), 1)
+        self.assertEqual(self.published[0][0],
+                         cfg.CONF.publisher_rpc.metering_topic)
+        self.assertIsInstance(self.published[0][1]['args']['data'], list)
 
-    def test_published(self):
+    def test_published_with_per_meter_topic(self):
+        publisher = rpc.RPCPublisher(
+            network_utils.urlsplit('rpc://?per_meter_topic=1'))
+        publisher.publish_counters(None,
+                                   self.test_data,
+                                   'test')
         self.assertEqual(len(self.published), 4)
         for topic, rpc_call in self.published:
             meters = rpc_call['args']['data']
@@ -271,7 +285,6 @@ class TestPublish(base.TestCase):
                                  1,
                                  "Meter are published grouped by name")
 
-    def test_published_topics(self):
         topics = [topic for topic, meter in self.published]
         self.assertIn(cfg.CONF.publisher_rpc.metering_topic, topics)
         self.assertIn(

tests/publisher/test_udp.py

@@ -22,11 +22,11 @@ import datetime
 import mock
 import msgpack
 from oslo.config import cfg
-import urlparse
 
 from ceilometer import counter
 from ceilometer.publisher import udp
 from ceilometer.tests import base
+from ceilometer.openstack.common import network_utils
 
 
 class TestUDPPublisher(base.TestCase):
@@ -105,7 +105,8 @@ class TestUDPPublisher(base.TestCase):
         self.data_sent = []
         with mock.patch('socket.socket',
                         self._make_fake_socket(self.data_sent)):
-            publisher = udp.UDPPublisher(urlparse.urlparse('udp://somehost'))
+            publisher = udp.UDPPublisher(
+                network_utils.urlsplit('udp://somehost'))
         publisher.publish_counters(None,
                                    self.test_data,
                                    self.COUNTER_SOURCE)
@@ -142,7 +143,8 @@ class TestUDPPublisher(base.TestCase):
     def test_publish_error(self):
         with mock.patch('socket.socket',
                         self._make_broken_socket):
-            publisher = udp.UDPPublisher(urlparse.urlparse('udp://localhost'))
+            publisher = udp.UDPPublisher(
+                network_utils.urlsplit('udp://localhost'))
         publisher.publish_counters(None,
                                    self.test_data,
                                    self.COUNTER_SOURCE)