server: support arbiter node config introduced by PR#182

Author: pecharmin

README.md

@@ -418,14 +418,19 @@ set name as an argument to this set. All hosts must have the same set name.
 An array of member hosts for the replica set.
 Mutually exclusive with `replset_config` param.
 
+##### `replset_arbiter`
+A string to identify an arbiter instance for the replica set.
+The arbiter node must also appear in `replset_members`.
+Mutually exclusive with `replset_config` param.
+
 ##### `replset_config`
 A hash that is used to configure the replica set.
 Mutually exclusive with `replset_members` param.
 
 ```puppet
 class mongodb::server {
   replset        => 'rsmain',
-  replset_config => { 'rsmain' => { ensure  => present, settings => { heartbeatTimeoutSecs => 15, getLastErrorModes => { ttmode => { dc => 1 } } }, members => [{'host'=>'host1:27017', 'tags':{ 'dc' : 'east'}}, { 'host' => 'host2:27017'}, 'host3:27017']  }  }
+  replset_config => { 'rsmain' => { ensure  => present, settings => { heartbeatTimeoutSecs => 15, getLastErrorModes => { ttmode => { dc => 1 } } }, members => [{'host'=>'host1:27017', 'tags':{ 'dc' : 'east'}}, { 'host' => 'host2:27017'}, 'host3:27017'] }, arbiter => ['host3:27017'] }
 
 }
 ```

manifests/server.pp

@@ -53,6 +53,7 @@
   Optional[String] $replset                             = undef,
   Optional[Hash] $replset_config                        = undef,
   Optional[Array] $replset_members                      = undef,
+  Optional[String] $replset_arbiter                     = undef,
   Optional[Boolean] $configsvr                          = undef,
   Optional[Boolean] $shardsvr                           = undef,
   Optional[Boolean] $rest                               = undef,
@@ -113,8 +114,8 @@
   # Set-up replicasets
   if $replset {
     # Check that we've got either a members array or a replset_config hash
-    if $replset_members and $replset_config {
-      fail('You can provide either replset_members or replset_config, not both.')
+    if ( $replset_members or $replset_arbiter ) and $replset_config {
+     fail('You can provide either replset_members incl. replset_arbiter or replset_config, not both.')
     } elsif !$replset_members and !$replset_config {
       # No members or config provided. Warn about it.
       warning('Replset specified, but no replset_members or replset_config provided.')
@@ -129,6 +130,7 @@
           "${replset}" => {
             'ensure'   => 'present',
             'members'  => $replset_members,
+            'arbiter'  => $replset_arbiter,
           },
         }
       }

spec/classes/server_spec.rb

@@ -381,6 +381,36 @@
 
           it { is_expected.to contain_class('mongodb::replset').with_sets(rsConf) }
         end
+
+        describe 'should setup using replset_members with replset_arbiter' do
+          let(:rsConf) do
+            {
+              'rsTest' => {
+                'ensure'  => 'present',
+                'members' => [
+                  'mongo1:27017',
+                  'mongo2:27017',
+                  'mongo3:27017'
+                ],
+                'arbiter' => 'mongo3:27017'
+              }
+            }
+          end
+
+          let(:params) do
+            {
+              replset: 'rsTest',
+              replset_members: [
+                'mongo1:27017',
+                'mongo2:27017',
+                'mongo3:27017'
+              ],
+              'arbiter' => 'mongo3:27017'
+            }
+          end
+
+          it { is_expected.to contain_class('mongodb::replset').with_sets(rsConf) }
+        end
       end
     end
   end