Remove rpc service from agent manager

The agent doesn't need to act as a rpc server.
This patch migrate the agent manager from a rpc service to a normal service

Change-Id: I06f4546fa40f8702a75adc7f6f8e439d17af3de3

ceilometer/agent.py

@@ -21,6 +21,7 @@ import itertools
 
 from ceilometer.openstack.common import context
 from ceilometer.openstack.common import log
+from ceilometer.openstack.common import service as os_service
 from ceilometer import pipeline
 from ceilometer import transformer
 
@@ -48,9 +49,10 @@ class PollingTask(object):
         """Polling sample and publish into pipeline."""
 
 
-class AgentManager(object):
+class AgentManager(os_service.Service):
 
     def __init__(self, extension_manager):
+        super(AgentManager, self).__init__()
 
         self.pollster_manager = extension_manager
 
@@ -74,18 +76,17 @@ class AgentManager(object):
 
         return polling_tasks
 
-    def initialize_service_hook(self, service):
+    def start(self):
         self.pipeline_manager = pipeline.setup_pipeline(
             transformer.TransformerExtensionManager(
                 'ceilometer.transformer',
             ),
         )
 
-        self.service = service
         for interval, task in self.setup_polling_tasks().iteritems():
-            self.service.tg.add_timer(interval,
+            self.tg.add_timer(interval,
-                                      self.interval_task,
+                              self.interval_task,
-                                      task=task)
+                              task=task)
 
     @staticmethod
     def interval_task(task):

ceilometer/central/manager.py

@@ -23,7 +23,6 @@ from stevedore import extension
 from ceilometer import agent
 from ceilometer.openstack.common.gettextutils import _  # noqa
 from ceilometer.openstack.common import log
-from ceilometer.openstack.common.rpc import service as rpc_service
 from ceilometer.openstack.common import service as os_service
 from ceilometer import service
 
@@ -83,6 +82,4 @@ class AgentManager(agent.AgentManager):
 
 def agent_central():
     service.prepare_service()
-    os_service.launch(rpc_service.Service(cfg.CONF.host,
+    os_service.launch(AgentManager()).wait()
-                                          'ceilometer.agent.central',
-                                          AgentManager())).wait()

ceilometer/compute/manager.py

@@ -24,7 +24,6 @@ from ceilometer.compute.virt import inspector as virt_inspector
 from ceilometer import nova_client
 from ceilometer.openstack.common.gettextutils import _  # noqa
 from ceilometer.openstack.common import log
-from ceilometer.openstack.common.rpc import service as rpc_service
 from ceilometer.openstack.common import service as os_service
 from ceilometer import service
 
@@ -84,6 +83,4 @@ class AgentManager(agent.AgentManager):
 
 def agent_compute():
     service.prepare_service()
-    os_service.launch(rpc_service.Service(cfg.CONF.host,
+    os_service.launch(AgentManager()).wait()
-                                          'ceilometer.agent.compute',
-                                          AgentManager())).wait()

ceilometer/tests/agentbase.py

@@ -253,12 +253,12 @@ class BaseAgentManagerTestCase(base.BaseTestCase):
         pub = self.mgr.pipeline_manager.pipelines[0].publishers[0]
         self.assertEqual(len(pub.samples), 0)
 
-    def test_agent_manager_initialize_service_hook(self):
+    def test_agent_manager_start(self):
         mgr = agent.AgentManager(self.mgr.pollster_manager)
         mgr.create_polling_task = mock.MagicMock()
-        service = mock.MagicMock()
+        mgr.tg = mock.MagicMock()
-        mgr.initialize_service_hook(service)
+        mgr.start()
-        self.assertTrue(service.tg.add_timer.called)
+        self.assertTrue(mgr.tg.add_timer.called)
 
     def test_manager_exception_persistency(self):
         self.pipeline_cfg.append({