Add support for [polling] batch_size

Change-Id: I44f07afcdd5a723afda8a9fb2abd698508694278

manifests/agent/polling.pp

@@ -54,6 +54,10 @@
 #   This is used only if manage_polling is true.
 #   Defaults to undef
 #
+# [*batch_size*]
+#   (Optional) Batch size of samples to send to notification agent.
+#   Defaults to $::os_service_default
+#
 # DEPRECATED PARAMETERS
 #
 # [*coordination_url*]
@@ -72,6 +76,7 @@ class ceilometer::agent::polling (
   $polling_interval          = 600,
   $polling_meters            = $::ceilometer::params::polling_meters,
   $polling_config            = undef,
+  $batch_size                = $::os_service_default,
   # DEPRECATED PARAMETERS
   $coordination_url          = undef,
 ) inherits ceilometer {
@@ -135,6 +140,10 @@ class ceilometer::agent::polling (
     }
   }
 
+  ceilometer_config {
+    'polling/batch_size': value => $batch_size
+  }
+
   if $manage_service {
     if $enabled {
       $service_ensure = 'running'

releasenotes/notes/polling-batch_size-95f15dc9d96b96b4.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    The ``ceilometer::agent::polling`` class now suppports the new
+    ``batch_size`` parameter.

spec/classes/ceilometer_agent_polling_spec.rb

@@ -48,6 +48,7 @@ describe 'ceilometer::agent::polling' do
         :tag        => 'ceilometer-service',
       )}
 
+      it { should contain_ceilometer_config('polling/batch_size').with_value('<SERVICE DEFAULT>') }
       it { should_not contain_file('polling') }
     end
 
@@ -219,6 +220,14 @@ sources:
 
       it { should contain_ceilometer_config('coordination/backend_url').with_value('redis://localhost:6379') }
     end
+
+    context 'when batch_size is set' do
+      before do
+        params.merge!( :batch_size => 50 )
+      end
+
+      it { should contain_ceilometer_config('polling/batch_size').with_value(50) }
+    end
   end
 
   on_supported_os({