Add a rabbit_transient_queues_ttl and amqp_auto_delete params

Since transient_queues_ttl is also managed by oslo::messaging::rabbit,
there's no way to use mistral_config to set it, so this patch is mandatory
for one to set rabbit_transient_queues_ttl in mistral.conf.

Change-Id: I425b29f8511403de0afc82479face47f8d6d354e

manifests/init.pp

@@ -65,6 +65,14 @@
 #   (Optional) Use quorum queues for transients queues in RabbitMQ.
 #   Defaults to $facts['os_service_default']
 #
+# [*rabbit_transient_queues_ttl*]
+#   (Optional) Positive integer representing duration in seconds for
+#   queue TTL (x-expires). Queues which are unused for the duration
+#   of the TTL are automatically deleted.
+#   The parameter affects only reply and fanout queues. (integer value)
+#   Min to 1
+#   Defaults to $facts['os_service_default']
+#
 # [*rabbit_quorum_delivery_limit*]
 #   (Optional) Each time a message is rdelivered to a consumer, a counter is
 #   incremented. Once the redelivery count exceeds the delivery limit
@@ -127,6 +135,10 @@
 #   consumer cancel notification.
 #   Defaults to $facts['os_service_default']
 #
+# [*amqp_auto_delete*]
+#   (Optional) Define if transient queues should be auto-deleted (boolean value)
+#   Defaults to $facts['os_service_default']
+#
 # [*amqp_durable_queues*]
 #   (optional)Use durable queues in amqp.
 #   Defaults to $facts['os_service_default']
@@ -199,6 +211,7 @@ class mistral(
   $rabbit_heartbeat_rate              = $facts['os_service_default'],
   $rabbit_qos_prefetch_count          = $facts['os_service_default'],
   $rabbit_quorum_queue                = $facts['os_service_default'],
+  $rabbit_transient_queues_ttl        = $facts['os_service_default'],
   $rabbit_transient_quorum_queue      = $facts['os_service_default'],
   $rabbit_quorum_delivery_limit       = $facts['os_service_default'],
   $rabbit_quorum_max_memory_length    = $facts['os_service_default'],
@@ -214,6 +227,7 @@ class mistral(
   $kombu_ssl_version                  = $facts['os_service_default'],
   $kombu_reconnect_delay              = $facts['os_service_default'],
   $amqp_durable_queues                = $facts['os_service_default'],
+  $amqp_auto_delete                   = $facts['os_service_default'],
   Boolean $purge_config               = false,
   Boolean $sync_db                    = true,
   $max_missed_heartbeats              = $facts['os_service_default'],
@@ -272,8 +286,10 @@ class mistral(
     heartbeat_in_pthread            => $rabbit_heartbeat_in_pthread,
     rabbit_qos_prefetch_count       => $rabbit_qos_prefetch_count,
     amqp_durable_queues             => $amqp_durable_queues,
+    amqp_auto_delete                => $amqp_auto_delete,
     rabbit_quorum_queue             => $rabbit_quorum_queue,
     rabbit_transient_quorum_queue   => $rabbit_transient_quorum_queue,
+    rabbit_transient_queues_ttl     => $rabbit_transient_queues_ttl,
     rabbit_quorum_delivery_limit    => $rabbit_quorum_delivery_limit,
     rabbit_quorum_max_memory_length => $rabbit_quorum_max_memory_length,
     rabbit_quorum_max_memory_bytes  => $rabbit_quorum_max_memory_bytes,

releasenotes/notes/amqp_auto_delete-8552b7085fdbb335.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add a new ``amqp_auto_delete`` parameter, so that transient queues are
+    automatically deleted.

releasenotes/notes/rabbit_transient_queues_ttl-c4243834920ec44d.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    A new parameter ``rabbit_transient_queues_ttl`` has been added to the
+    mistral class to configure how long transtient queue should stay until
+    they are automatically deleted.

spec/classes/mistral_init_spec.rb

@@ -46,6 +46,7 @@ describe 'mistral' do
           :kombu_reconnect_delay           => '<SERVICE DEFAULT>',
           :kombu_failover_strategy         => '<SERVICE DEFAULT>',
           :amqp_durable_queues             => '<SERVICE DEFAULT>',
+          :amqp_auto_delete                => '<SERVICE DEFAULT>',
           :kombu_ssl_ca_certs              => '<SERVICE DEFAULT>',
           :kombu_ssl_certfile              => '<SERVICE DEFAULT>',
           :kombu_ssl_keyfile               => '<SERVICE DEFAULT>',
@@ -53,6 +54,7 @@ describe 'mistral' do
           :rabbit_ha_queues                => '<SERVICE DEFAULT>',
           :rabbit_quorum_queue             => '<SERVICE DEFAULT>',
           :rabbit_transient_quorum_queue   => '<SERVICE DEFAULT>',
+          :rabbit_transient_queues_ttl     => '<SERVICE DEFAULT>',
           :rabbit_quorum_delivery_limit    => '<SERVICE DEFAULT>',
           :rabbit_quorum_max_memory_length => '<SERVICE DEFAULT>',
           :rabbit_quorum_max_memory_bytes  => '<SERVICE DEFAULT>',