Add support for rabbitmq use for ceilometer notifications

config.yaml

@@ -70,14 +70,12 @@ options:
   ssl_key:
     type: string
     description: SSL key to use with certificate specified as ssl_cert.
-  ceph-osd-replication-count:
+  rabbit-user:
-        default: 2
+    default: glance
-        type: int
+    type: string
-        description: |
+    description: Username to request access on rabbitmq-server.
-            This value dictates the number of replicas ceph must make of any
+  rabbit-vhost:
-            object it stores within the images rbd pool. Of course, this only
+    default: glance
-            applies if using Ceph as a backend store. Note that once the images
+    type: string
-            rbd pool has been created, changing this value will not have any
+    description: RabbitMQ virtual host to request access on rabbitmq-server.
-            effect (although it can be changed in ceph by manually configuring
-            your ceph cluster).
 

hooks/amqp-relation-changed

@@ -0,0 +1 @@
+glance_relations.py

hooks/amqp-relation-joined

@@ -0,0 +1 @@
+glance_relations.py

hooks/glance_relations.py

@@ -313,8 +313,22 @@ def configure_https():
         image_service_joined(relation_id=r_id)
 
 
+@hooks.hook('amqp-relation-joined')
+def amqp_joined():
+    conf = config()
+    relation_set(username=conf['rabbit-user'], vhost=conf['rabbit-vhost'])
+
+
+@hooks.hook('amqp-relation-changed')
+@restart_on_change(restart_map())
+def amqp_changed():
+    if 'amqp' not in CONFIGS.complete_contexts():
+        juju_log('amqp relation incomplete. Peer not ready?')
+        return
+    CONFIGS.write(GLANCE_API_CONF)
+
 if __name__ == '__main__':
     try:
         hooks.execute(sys.argv)
     except UnregisteredHookError as e:
-        juju_log('Unknown hook {} - skiping.'.format(e))
+        juju_log('Unknown hook {} - skipping.'.format(e))

hooks/glance_utils.py

@@ -66,6 +66,7 @@ CONFIG_FILES = OrderedDict([
     }),
     (GLANCE_API_CONF, {
         'hook_contexts': [context.SharedDBContext(),
+                          context.AMQPContext(),
                           context.IdentityServiceContext(),
                           glance_contexts.CephGlanceContext(),
                           glance_contexts.ObjectStoreContext(),

metadata.yaml

@@ -14,6 +14,8 @@ provides:
 requires:
   shared-db:
     interface: mysql-shared
+  amqp:
+    interface: rabbitmq
   object-store:
     interface: swift-proxy
   identity-service:

templates/folsom/glance-api.conf

@@ -29,31 +29,15 @@ use_syslog = False
 registry_host = 0.0.0.0
 registry_port = 9191
 registry_client_protocol = http
-notifier_strategy = noop
+
-rabbit_host = localhost
+{% if rabbitmq_host -%}
-rabbit_port = 5672
+notifier_strategy = rabbit
-rabbit_use_ssl = false
+rabbit_host = {{ rabbitmq_host }}
-rabbit_userid = guest
+rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = guest
+rabbit_password = {{ rabbitmq_password }}
-rabbit_virtual_host = /
+rabbit_virtual_host = {{ rabbitmq_virtual_host }}
-rabbit_notification_exchange = glance
+{% endif -%}
-rabbit_notification_topic = glance_notifications
+
-rabbit_durable_queues = False
-qpid_notification_exchange = glance
-qpid_notification_topic = glance_notifications
-qpid_host = localhost
-qpid_port = 5672
-qpid_username = 
-qpid_password = 
-qpid_sasl_mechanisms = 
-qpid_reconnect_timeout = 0
-qpid_reconnect_limit = 0
-qpid_reconnect_interval_min = 0
-qpid_reconnect_interval_max = 0
-qpid_reconnect_interval = 0
-qpid_heartbeat = 5
-qpid_protocol = tcp
-qpid_tcp_nodelay = True
 filesystem_store_datadir = /var/lib/glance/images/
 
 {% if swift_store %}

unit_tests/test_glance_relations.py

@@ -399,3 +399,23 @@ class GlanceRelationTests(CharmTestCase):
         self.check_call.assert_called_with(cmd)
         image_service_joined.assert_called_with(relation_id='image-service:0')
 
+    def test_amqp_joined(self):
+        relations.amqp_joined()
+        self.relation_set.assert_called_with(username='glance', vhost='glance')
+
+    @patch.object(relations, 'CONFIGS')
+    def test_amqp_changed_missing_relation_data(self, configs):
+        configs.complete_contexts = MagicMock()
+        configs.complete_contexts.return_value = []
+        relations.amqp_changed()
+        self.juju_log.assert_called()
+
+    @patch.object(relations, 'CONFIGS')
+    def test_amqp_changed_relation_data(self, configs):
+        configs.complete_contexts = MagicMock()
+        configs.complete_contexts.return_value = ['amqp']
+        configs.write = MagicMock()
+        relations.amqp_changed()
+        self.assertEquals([call('/etc/glance/glance-api.conf')],
+                           configs.write.call_args_list)
+        self.juju_log.assert_called()