Glance configuration changes

This change makes notification_driver configurable and only writes
messaging configuration options to glance-api.conf if
notification_driver is set to 'messaging' (it defaults to 'noop').

We also set a default value for 'swift_store_endpoint_type' so that
an ansible run will not bomb if the user does not have
'glance_swift_store_endpoint_type' defined in their user_variables.yml
file.

etc/rpc_deploy/user_variables.yml

@@ -65,6 +65,7 @@ glance_swift_store_region: SomeRegion
 # `internalURL` will cause glance to speak to swift via ServiceNet, use
 # `publicURL` to communicate with swift over the public network
 glance_swift_store_endpoint_type: internalURL
+glance_notification_driver: noop
 
 
 ## Heat Options

rpc_deployment/inventory/group_vars/glance_all.yml

@@ -40,6 +40,7 @@ container_mysql_password: "{{ glance_container_mysql_password }}"
 container_database: glance
 
 ## RPC
+notification_driver: "{{ glance_notification_driver|default('noop') }}"
 rpc_backend: glance.openstack.common.rpc.impl_kombu
 
 ## Backend
@@ -51,6 +52,7 @@ swift_store_user: "{{ glance_swift_store_user | default('NoUser') }}"
 swift_store_key: "{{ glance_swift_store_key | default('NoKey') }}"
 swift_store_region: "{{ glance_swift_store_region | default('NoRegion') }}"
 swift_store_container: "{{ glance_swift_store_container | default('NoContainer')}}"
+swift_store_endpoint_type: "{{ glance_swift_store_endpoint_type | default('internalURL') }}"
 
 ## Auth
 service_admin_tenant_name: "service"

rpc_deployment/roles/glance_common/templates/glance-api.conf

@@ -18,8 +18,9 @@ registry_port = 9191
 registry_client_protocol = http
 cinder_catalog_info = volume:cinder:internalURL
 
+notification_driver = {{ notification_driver }}
+{% if notification_driver == "messaging" %}
 ##### RPC MESSAGING OPTIONS #####
-notification_driver = messaging
 rpc_backend = {{ rpc_backend }}
 rabbit_hosts = {{ rabbit_hosts }}
 rabbit_port = {{ rabbit_port }}
@@ -30,6 +31,7 @@ rabbit_virtual_host = {{ rabbit_virtual_host }}
 rabbit_notification_exchange = glance
 rabbit_notification_topic = notifications
 rabbit_durable_queues = False
+{% endif %}
 
 {% if default_store == "swift" %}
 ##### STORE OPTIONS #####
@@ -43,9 +45,9 @@ swift_store_create_container_on_put = True
 swift_store_large_object_size = 5120
 swift_store_large_object_chunk_size = 200
 swift_store_retry_get_count = 5
-swift_store_endpoint_type = {{ glance_swift_store_endpoint_type }}
-
+swift_store_endpoint_type = {{ swift_store_endpoint_type }}
 {% endif %}
+
 filesystem_store_datadir = /var/lib/glance/images/
 delayed_delete = False
 scrub_time = 43200