Support [cache] memcache_pool_flush_on_reconnect

Depends-on: https://review.opendev.org/902861
Change-Id: I4d104dc7a3937d0a9c4ab3e02dbcd1280bcdfa09

manifests/cache.pp

@@ -103,6 +103,11 @@
 #   client connection. (integer value)
 #   Defaults to $facts['os_service_default']
 #
+# [*memcache_pool_flush_on_reconnect*]
+#   (Optional) Global toggle if memcache will be flushed on reconnect.
+#   (oslo_cache.memcache_pool backend only)
+#   Defaults to $facts['os_service_default']
+#
 # [*manage_backend_package*]
 #   (Optional) Whether to install the backend package for the cache.
 #   Defaults to true
@@ -189,6 +194,7 @@ class ceilometer::cache (
   $memcache_pool_maxsize                = $facts['os_service_default'],
   $memcache_pool_unused_timeout         = $facts['os_service_default'],
   $memcache_pool_connection_get_timeout = $facts['os_service_default'],
+  $memcache_pool_flush_on_reconnect     = $facts['os_service_default'],
   $manage_backend_package               = true,
   $tls_enabled                          = $facts['os_service_default'],
   $tls_cafile                           = $facts['os_service_default'],
@@ -223,6 +229,7 @@ class ceilometer::cache (
     memcache_pool_maxsize                => $memcache_pool_maxsize,
     memcache_pool_unused_timeout         => $memcache_pool_unused_timeout,
     memcache_pool_connection_get_timeout => $memcache_pool_connection_get_timeout,
+    memcache_pool_flush_on_reconnect     => $memcache_pool_flush_on_reconnect,
     manage_backend_package               => $manage_backend_package,
     tls_enabled                          => $tls_enabled,
     tls_cafile                           => $tls_cafile,

releasenotes/notes/memcache_pool_flush_on_reconnect-00779615915eb770.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    The new ``ceilometer::cache::memcache_pool_flush_on_reconnect`` parameter
+    has been added.

spec/classes/ceilometer_cache_spec.rb

@@ -28,6 +28,7 @@ describe 'ceilometer::cache' do
           :memcache_pool_maxsize                => '<SERVICE DEFAULT>',
           :memcache_pool_unused_timeout         => '<SERVICE DEFAULT>',
           :memcache_pool_connection_get_timeout => '<SERVICE DEFAULT>',
+          :memcache_pool_flush_on_reconnect     => '<SERVICE DEFAULT>',
           :tls_enabled                          => '<SERVICE DEFAULT>',
           :tls_cafile                           => '<SERVICE DEFAULT>',
           :tls_certfile                         => '<SERVICE DEFAULT>',
@@ -63,6 +64,7 @@ describe 'ceilometer::cache' do
           :memcache_pool_maxsize                => '10',
           :memcache_pool_unused_timeout         => '120',
           :memcache_pool_connection_get_timeout => '360',
+          :memcache_pool_flush_on_reconnect     => false,
           :tls_enabled                          => false,
           :enable_retry_client                  => false,
           :retry_attempts                       => 2,
@@ -93,6 +95,7 @@ describe 'ceilometer::cache' do
           :memcache_pool_maxsize                => '10',
           :memcache_pool_unused_timeout         => '120',
           :memcache_pool_connection_get_timeout => '360',
+          :memcache_pool_flush_on_reconnect     => false,
           :tls_enabled                          => false,
           :tls_cafile                           => '<SERVICE DEFAULT>',
           :tls_certfile                         => '<SERVICE DEFAULT>',