Use openstack.common.cfg for ceilometer options

Change-Id: Iba7df922a7d6b3eec7db427b4135e6fa2ad2d416
Signed-off-by: Julien Danjou <julien.danjou@enovance.com>

ceilometer/agent/manager.py

@@ -18,14 +18,13 @@
 
 import pkg_resources
 
-from nova import flags
 from nova import log as logging
 from nova import manager
 from nova import rpc
 
 from ceilometer import meter
+from ceilometer import cfg
 
-FLAGS = flags.FLAGS
 
 # FIXME(dhellmann): We need to have the main program set up logging
 # correctly so messages from modules outside of the nova package
@@ -77,9 +76,9 @@ class AgentManager(manager.Manager):
                         'args': {'data': meter.meter_message_from_counter(c),
                                  },
                         }
-                    rpc.cast(context, FLAGS.metering_topic, msg)
+                    rpc.cast(context, cfg.CONF.metering_topic, msg)
                     rpc.cast(context,
-                             FLAGS.metering_topic + '.' + c.type,
+                             cfg.CONF.metering_topic + '.' + c.type,
                              msg)
             except Exception as err:
                 LOG.warning('Continuing after error from %s: %s', name, err)

ceilometer/cfg.py

@@ -0,0 +1,21 @@
+# -*- encoding: utf-8 -*-
+#
+# Copyright © 2012 eNovance <licensing@enovance.com>
+#
+# 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.
+
+from openstack.common.cfg import *
+
+CONF = ConfigOpts()

ceilometer/collector/manager.py

@@ -25,6 +25,7 @@ from nova.rpc import dispatcher as rpc_dispatcher
 
 from ceilometer import rpc
 from ceilometer import meter
+from ceilometer import cfg
 from ceilometer.collector import dispatcher
 
 # FIXME(dhellmann): There must be another way to do this.
@@ -61,9 +62,9 @@ class CollectorManager(manager.Manager):
         # Set ourselves up as a separate worker for the metering data,
         # since the default for manager is to use create_consumer().
         self.connection.create_worker(
-            flags.FLAGS.metering_topic,
+            cfg.CONF.metering_topic,
             rpc_dispatcher.RpcDispatcher([self]),
-            'ceilometer.collector.' + flags.FLAGS.metering_topic,
+            'ceilometer.collector.' + cfg.CONF.metering_topic,
             )
 
         self.connection.consume_in_thread()
@@ -81,10 +82,10 @@ class CollectorManager(manager.Manager):
                      },
             }
         ctxt = context.get_admin_context()
-        nova_rpc.cast(ctxt, FLAGS.metering_topic, msg)
+        nova_rpc.cast(ctxt, cfg.CONF.metering_topic, msg)
         nova_rpc.cast(ctxt,
-                 FLAGS.metering_topic + '.' + counter.type,
-                 msg)
+                      cfg.CONF.metering_topic + '.' + counter.type,
+                      msg)
 
     def record_metering_data(self, context, data):
         """This method is triggered when metering data is

ceilometer/meter.py

@@ -22,8 +22,7 @@ import hashlib
 import hmac
 import uuid
 
-from nova import flags
-from nova.openstack.common import cfg
+from ceilometer import cfg
 
 METER_OPTS = [
     cfg.StrOpt('metering_secret',
@@ -36,13 +35,13 @@ METER_OPTS = [
                ),
     ]
 
-flags.FLAGS.register_opts(METER_OPTS)
+cfg.CONF.register_opts(METER_OPTS)
 
 
 def compute_signature(message):
     """Return the signature for a message dictionary.
     """
-    digest_maker = hmac.new(flags.FLAGS.metering_secret, '', hashlib.sha256)
+    digest_maker = hmac.new(cfg.CONF.metering_secret, '', hashlib.sha256)
     for name, value in sorted(message.iteritems()):
         if name == 'message_signature':
             # Skip any existing signature value, which would not have
@@ -70,7 +69,7 @@ def meter_message_from_counter(counter):
            'resource_metadata': counter.resource_metadata,
            'message_id': str(uuid.uuid1()),
            # This field is used by the notification system.
-           'event_type': '%s.%s' % (flags.FLAGS.metering_topic, counter.type),
+           'event_type': '%s.%s' % (cfg.CONF.metering_topic, counter.type),
            }
     msg['message_signature'] = compute_signature(msg)
     return msg

tests/test_meter.py

@@ -20,8 +20,7 @@
 
 from ceilometer import counter
 from ceilometer import meter
-
-from nova import flags
+from ceilometer import cfg
 
 
 def test_compute_signature_change_key():
@@ -53,12 +52,12 @@ def test_compute_signature_signed():
 def test_compute_signature_use_configured_secret():
     data = {'a': 'A', 'b': 'B'}
     sig1 = meter.compute_signature(data)
-    old_secret = flags.FLAGS.metering_secret
+    old_secret = cfg.CONF.metering_secret
     try:
-        flags.FLAGS.metering_secret = 'not the default value'
+        cfg.CONF.metering_secret = 'not the default value'
         sig2 = meter.compute_signature(data)
     finally:
-        flags.FLAGS.metering_secret = old_secret
+        cfg.CONF.metering_secret = old_secret
     assert sig1 != sig2