Add bridge_mappings option to linuxbridge agent

Change-Id: I40bb008d08a76bc72eb2d0d927faa304efca4796

manifests/agents/ml2/linuxbridge.pp

@@ -54,6 +54,10 @@
 #   tuples mapping physical network names to agent's node-specific physical
 #   network interfaces. Defaults to empty list.
 #
+# [*bridge_mappings*]
+#   (optional) List of <physical_network>:<bridge>
+#   Defaults to empty list
+#
 # [*firewall_driver*]
 #   (optional) Firewall driver for realizing neutron security group function.
 #   Defaults to 'iptables'.
@@ -75,12 +79,14 @@ class neutron::agents::ml2::linuxbridge (
   $polling_interval = $::os_service_default,
   $l2_population    = $::os_service_default,
   $physical_interface_mappings = [],
+  $bridge_mappings  = [],
   $firewall_driver  = 'iptables',
   $purge_config     = false,
 ) {
 
   validate_array($tunnel_types)
   validate_array($physical_interface_mappings)
+  validate_array($bridge_mappings)
 
   include ::neutron::deps
   include ::neutron::params
@@ -119,6 +125,16 @@ class neutron::agents::ml2::linuxbridge (
     }
   }
 
+  if size($bridge_mappings) > 0 {
+    neutron_agent_linuxbridge {
+      'linux_bridge/bridge_mappings': value => join($bridge_mappings, ',');
+    }
+  } else {
+    neutron_agent_linuxbridge {
+      'linux_bridge/bridge_mappings': ensure => absent;
+    }
+  }
+
   neutron_agent_linuxbridge {
     'agent/polling_interval':                   value => $polling_interval;
     'linux_bridge/physical_interface_mappings': value => join($physical_interface_mappings, ',');

releasenotes/notes/add-linuxbridge-bridge-mappings-1c8e32e900701938.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Added a new paramater 'neutron::agents::ml2::linuxbridge::bridge_mappings' for
+    specifying the bridge_mappings in the linuxbridge agent.

spec/classes/neutron_agents_ml2_linuxbridge_spec.rb

@@ -13,6 +13,7 @@ describe 'neutron::agents::ml2::linuxbridge' do
       :tunnel_types                => [],
       :local_ip                    => false,
       :physical_interface_mappings => [],
+      :bridge_mappings             => [],
       :firewall_driver             => 'iptables',
       :purge_config                => false,}
   end
@@ -41,6 +42,7 @@ describe 'neutron::agents::ml2::linuxbridge' do
       it 'configures ml2_conf.ini' do
         is_expected.to contain_neutron_agent_linuxbridge('agent/polling_interval').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_neutron_agent_linuxbridge('linux_bridge/physical_interface_mappings').with_value(default_params[:physical_interface_mappings].join(','))
+        is_expected.to contain_neutron_agent_linuxbridge('linux_bridge/bridge_mappings').with_ensure('absent')
         is_expected.to contain_neutron_agent_linuxbridge('securitygroup/firewall_driver').with_value(default_params[:firewall_driver])
         is_expected.to contain_neutron_agent_linuxbridge('agent/tunnel_types').with_ensure('absent')
       end
@@ -139,6 +141,18 @@ describe 'neutron::agents::ml2::linuxbridge' do
       end
     end
 
+    context 'when providing the bridge_mappings parameter' do
+      before do
+        params.merge!(:bridge_mappings => ['physnet0:br0', 'physnet1:br1'])
+      end
+
+      it 'configures bridge mappings' do
+        is_expected.to contain_neutron_agent_linuxbridge('linux_bridge/bridge_mappings').with_value(
+          params[:bridge_mappings].join(',')
+        )
+      end
+    end
+
     context 'with firewall_driver parameter set to false' do
       before :each do
         params.merge!(:firewall_driver => false)