Deprecate metadata_memory_cache_ttl

The [DEFAULT] cache_url option, which is set according to this
parameter, was already removed from neutron[1].

[1] 2e9364028b49abff28ca26836a31463c196ca6ae

Change-Id: I8e13dea10748f9af07fd20248cdf5d9d18b14ba5

manifests/agents/metadata.pp

@@ -48,12 +48,6 @@
 #   (optional) Number of backlog requests to configure the metadata server socket with.
 #   Defaults to $facts['os_service_default']
 #
-# [*metadata_memory_cache_ttl*]
-#   (optional) Specifies time in seconds a metadata cache entry is valid in
-#   memory caching backend.
-#   Set to 0 will cause cache entries to never expire.
-#   Set to $facts['os_service_default'] or false to disable cache.
-#
 # [*metadata_insecure*]
 #   (optional) Allow to perform insecure SSL (https) requests to nova metadata.
 #   Defaults to $facts['os_service_default']
@@ -73,6 +67,13 @@
 #   in the metadata config.
 #   Defaults to false.
 #
+# DEPRECATED PRAMETERS
+#
+# [*metadata_memory_cache_ttl*]
+#   (optional) Specifies time in seconds a metadata cache entry is valid in
+#   memory caching backend.
+#   Defaults to undef
+#
 class neutron::agents::metadata (
   $shared_secret,
   $package_ensure            = 'present',
@@ -85,18 +86,23 @@ class neutron::agents::metadata (
   $metadata_protocol         = $facts['os_service_default'],
   $metadata_workers          = $facts['os_workers'],
   $metadata_backlog          = $facts['os_service_default'],
-  $metadata_memory_cache_ttl = $facts['os_service_default'],
   $metadata_insecure         = $facts['os_service_default'],
   $nova_client_cert          = $facts['os_service_default'],
   $nova_client_priv_key      = $facts['os_service_default'],
   $report_interval           = $facts['os_service_default'],
   $rpc_response_max_timeout  = $facts['os_service_default'],
   Boolean $purge_config      = false,
+  # DEPRECATED PARAMETERS
+  $metadata_memory_cache_ttl = undef,
 ) {
 
   include neutron::deps
   include neutron::params
 
+  if metadata_memory_cache_ttl {
+    warning('The metadata_memotry_cache_ttl parameter is deprecated and has no effect.')
+  }
+
   resources { 'neutron_metadata_agent_config':
     purge => $purge_config,
   }
@@ -117,14 +123,9 @@ class neutron::agents::metadata (
     'DEFAULT/rpc_response_max_timeout':       value => $rpc_response_max_timeout;
   }
 
-  if ! is_service_default ($metadata_memory_cache_ttl) and ($metadata_memory_cache_ttl) {
+  # TODO(tkajinam): Remove this after 2024.1 release
-    neutron_metadata_agent_config {
+  neutron_metadata_agent_config {
-      'DEFAULT/cache_url': value => "memory://?default_ttl=${metadata_memory_cache_ttl}";
+    'DEFAULT/cache_url': ensure => absent;
-    }
-  } else {
-    neutron_metadata_agent_config {
-      'DEFAULT/cache_url': ensure => absent;
-    }
   }
 
   if $::neutron::params::metadata_agent_package {

releasenotes/notes/deprecate-metadata_memory_cache_ttl-f439946eac8a4c0e.yaml

@@ -0,0 +1,6 @@
+---
+deprecations:
+  - |
+    The ``neutron::agents::metadata::metadata_memory_cache_ttl`` parameter has
+    been deprecated and has no effect now. It will be removed in a future
+    release.

spec/classes/neutron_agents_metadata_spec.rb

@@ -57,7 +57,6 @@ describe 'neutron::agents::metadata' do
       should contain_neutron_metadata_agent_config('DEFAULT/metadata_backlog').with(:value => '<SERVICE DEFAULT>')
       should contain_neutron_metadata_agent_config('DEFAULT/nova_metadata_insecure').with(:value => '<SERVICE DEFAULT>')
       should contain_neutron_metadata_agent_config('DEFAULT/metadata_proxy_shared_secret').with(:value => params[:shared_secret]).with_secret(true)
-      should contain_neutron_metadata_agent_config('DEFAULT/cache_url').with(:ensure => 'absent')
       should contain_neutron_metadata_agent_config('agent/report_interval').with(:value => '<SERVICE DEFAULT>')
       should contain_neutron_metadata_agent_config('DEFAULT/rpc_response_max_timeout').with(:value => '<SERVICE DEFAULT>')
     end