Update messaging notification configuration

This patch add the conditional inclusion of the notification
section of the service configuration. This ensures that oslo.messaging
notifications use the correct transport for deployments that have
separate rpc and notify messaging backends. For example, if the
transport_url is not provided in the notification section of the
service configuration, the transport_url specified in the default
section will be used instead.

This patch conditionally selects the notifier driver. The noop
driver will be selected when notification publishing is disabled.
The messagingv2 driver is selected when notification publishing is
enabled.

Change-Id: Ie967b281e15127bbf611aca557e99ac6b3d1cd4b
Closes-Bug: #1794320

defaults/main.yml

@@ -74,6 +74,9 @@ trove_api_workers: "{{ [[ansible_processor_vcpus|default(2) // 2, 1] | max, trov
 trove_conductor_workers_max: 16
 trove_conductor_workers: "{{ [[ansible_processor_vcpus|default(2) // 2, 1] | max, trove_conductor_workers_max] | min }}"
 
+# Enable/Disable Ceilometer
+trove_ceilometer_enabled: False
+
 # TODO(odyssey4me):
 # This can be simplified once all the roles are using
 # python_venv_build. We can then switch to using a

templates/trove-conductor.conf.j2

@@ -24,4 +24,5 @@ connection = "{{ trove_galera_connection_string }}"
 ssl={{ trove_oslomsg_rpc_use_ssl }}
 
 [oslo_messaging_notifications]
+driver = {% if trove_ceilometer_enabled %}messagingv2{% else %}noop{% endif %}
 transport_url = {{ trove_oslomsg_notify_transport }}://{% for host in trove_oslomsg_notify_servers.split(',') %}{{ trove_oslomsg_notify_userid }}:{{ trove_oslomsg_notify_password }}@{{ host }}:{{ trove_oslomsg_notify_port }}{% if not loop.last %},{% else %}/{{ trove_oslomsg_notify_vhost }}{% endif %}{% endfor %}

templates/trove-guestagent.conf.j2

@@ -59,6 +59,7 @@ log_file = trove-guestagent.log
 ssl = {{ trove_guest_oslomsg_rpc_use_ssl }}
 
 [oslo_messaging_notifications]
+driver = {% if trove_ceilometer_enabled %}messagingv2{% else %}noop{% endif %}
 transport_url = {{ trove_oslomsg_notify_transport }}://{% for host in trove_oslomsg_notify_servers.split(',') %}{{ trove_oslomsg_notify_userid }}:{{ trove_oslomsg_notify_password }}@{{ host }}:{{ trove_oslomsg_notify_port }}{% if not loop.last %},{% else %}/{{ trove_oslomsg_notify_vhost }}{% endif %}{% endfor %}
 
 # ========== Datastore Specific Configuration Options ==========

templates/trove.conf.j2

@@ -119,6 +119,7 @@ enabled = {{ trove_profiler_enabled }}
 ssl = {{ trove_oslomsg_rpc_use_ssl }}
 
 [oslo_messaging_notifications]
+driver = {% if trove_ceilometer_enabled %}messagingv2{% else %}noop{% endif %}
 transport_url = {{ trove_oslomsg_notify_transport }}://{% for host in trove_oslomsg_notify_servers.split(',') %}{{ trove_oslomsg_notify_userid }}:{{ trove_oslomsg_notify_password }}@{{ host }}:{{ trove_oslomsg_notify_port }}{% if not loop.last %},{% else %}/{{ trove_oslomsg_notify_vhost }}{% endif %}{% endfor %}
 
 {% include 'include_db.j2' %}