Add support for [DEFAULT] max_parallel_requests

Change-Id: I8fc892301c06d9ff0cb4a687c02c35fcb6942d11

manifests/init.pp

@@ -9,6 +9,11 @@
 #   (Optional) Timeout seconds for HTTP requests.
 #   Defaults to 600.
 #
+# [*max_parallel_requests*]
+#   (Optional) Maximum number of parallel requests for services to handle at
+#   the same time.
+#   Defaults to $::os_service_default
+#
 # [*telemetry_secret*]
 #  (Required)  Secret key for signing messages.
 #
@@ -264,6 +269,7 @@
 #
 class ceilometer(
   $http_timeout                       = '600',
+  $max_parallel_requests              = $::os_service_default,
   $telemetry_secret                   = false,
   $notification_topics                = ['notifications'],
   $notification_driver                = $::os_service_default,
@@ -392,6 +398,7 @@ will be removed in a future release.')
   # Once we got here, we can act as an honey badger on the rpc used.
   ceilometer_config {
     'DEFAULT/http_timeout'                : value => $http_timeout;
+    'DEFAULT/max_parallel_requests'       : value => $max_parallel_requests;
     'DEFAULT/host'                        : value => $host;
     'publisher/telemetry_secret'          : value => $telemetry_secret, secret => true;
     'hardware/readonly_user_name'         : value => $snmpd_readonly_username;

releasenotes/notes/max_parallel_requests-ef9a035e9ecf0951.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    The new ``ceilometer::max_parallel_requests`` parameter has been added.

spec/classes/ceilometer_init_spec.rb

@@ -5,6 +5,7 @@ describe 'ceilometer' do
   let :params do
     {
       :http_timeout          => '600',
+      :max_parallel_requests => 64,
       :telemetry_secret      => 'metering-s3cr3t',
       :package_ensure        => 'present',
       :purge_config          => false,
@@ -24,6 +25,10 @@ describe 'ceilometer' do
       is_expected.to contain_ceilometer_config('DEFAULT/http_timeout').with_value(params[:http_timeout])
     end
 
+    it 'configures max_parallel_requests' do
+      is_expected.to contain_ceilometer_config('DEFAULT/max_parallel_requests').with_value(params[:max_parallel_requests])
+    end
+
     it 'configures host name' do
       is_expected.to contain_ceilometer_config('DEFAULT/host').with_value(params[:host])
     end