volume/api: specify a default backend

When using multi-backend in Cinder, we need to specify a default type to
avoid any error when creating a volume without specifying a type.

This patch is backward compatible when not using multi-backend and make
the catalog fail if we don't specify the value.

Also, it updates puppet-cinder to last stable/havana commit.

Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>

.fixtures.yml

@@ -2,7 +2,7 @@ fixtures:
   repositories:
     'cinder':
       repo: 'git://github.com/enovance/puppet-cinder'
-      ref: '3a0f09995625b1c2f6ec446cc2a2571348a7af0b'
+      ref: 'd92b38a8c7bb484e935ed21510843ef6be8e31d3'
     'keystone':
       repo: 'git://github.com/enovance/puppet-keystone.git'
       ref: '9802add6566646dc1e4a2812d19c2ab4724ff594'

Puppetfile

@@ -22,7 +22,7 @@ mod 'ceilometer',
   :ref => 'f71f935a3e41dcd11f8f5986a1fe0708b124e589'
 mod 'cinder',
   :git => 'git://github.com/enovance/puppet-cinder.git',
-  :ref => '3a0f09995625b1c2f6ec446cc2a2571348a7af0b'
+  :ref => 'd92b38a8c7bb484e935ed21510843ef6be8e31d3'
 mod 'glance',
   :git => 'git://github.com/enovance/puppet-glance.git',
   :ref => '001f1b6a8ef6bd0fde8fbe0a4b3362f31e6bbcda'

manifests/volume/controller.pp

@@ -25,6 +25,7 @@ class cloud::volume::controller(
   $api_eth                     = $os_params::api_eth,
   # Maintain backward compatibility for multi-backend
   $volume_multi_backend        = false,
+  $default_volume_type         = undef,
   # TODO(EmilienM) Disabled for now: http://git.io/kfTmcA
   # $backup_ceph_pool          = $os_params::cinder_rbd_backup_pool,
   # $backup_ceph_user          = $os_params::cinder_rbd_backup_user
@@ -33,9 +34,16 @@ class cloud::volume::controller(
   include 'cloud::volume'
 
   if ! $volume_multi_backend {
-    $scheduler_driver_real = false
+    $scheduler_driver_real    = false
+    $default_volume_type_real = undef
   } else {
     $scheduler_driver_real = 'cinder.scheduler.filter_scheduler.FilterScheduler'
+
+    if ! $default_volume_type {
+      fail('when using multi-backend, you should define a default_volume_type value in cloud::volume::controller')
+    } else {
+      $default_volume_type_real = $default_volume_type
+    }
   }
 
   class { 'cinder::scheduler':
@@ -43,9 +51,10 @@ class cloud::volume::controller(
   }
 
   class { 'cinder::api':
-    keystone_password  => $ks_cinder_password,
-    keystone_auth_host => $ks_keystone_internal_host,
-    bind_host          => $api_eth
+    keystone_password   => $ks_cinder_password,
+    keystone_auth_host  => $ks_keystone_internal_host,
+    bind_host           => $api_eth,
+    default_volume_type => $default_volume_type_real
   }
 
   class { 'cinder::backup': }

spec/classes/cloud_volume_controller_spec.rb

@@ -80,12 +80,28 @@ describe 'cloud::volume::controller' do
 
     context 'with multi-backend' do
       before :each do
-        params.merge!( :volume_multi_backend => true )
+        params.merge!(
+          :volume_multi_backend => true,
+          :default_volume_type  => 'ceph'
+        )
       end
       it 'configure cinder scheduler with multi-backend' do
         should contain_class('cinder::scheduler').with(
           :scheduler_driver => 'cinder.scheduler.filter_scheduler.FilterScheduler'
         )
+        should contain_class('cinder::api').with(:default_volume_type => 'ceph')
+      end
+    end
+
+    context 'with multi-backend without default volume type' do
+      before :each do
+        params.merge!(
+          :volume_multi_backend => true,
+          :default_volume_type  => nil
+        )
+      end
+      it 'should raise an error and fail' do
+        should compile.and_raise_error(/when using multi-backend, you should define a default_volume_type value in cloud::volume::controller/)
       end
     end
 
@@ -98,10 +114,11 @@ describe 'cloud::volume::controller' do
 
     it 'configure cinder api' do
       should contain_class('cinder::api').with(
-          :keystone_password  => 'secrete',
-          :keystone_auth_host => '10.0.0.1',
-          :bind_host          => '10.0.0.1'
+          :keystone_password   => 'secrete',
+          :keystone_auth_host  => '10.0.0.1',
+          :bind_host           => '10.0.0.1',
         )
+      should contain_cinder_config('DEFAULT/default_volume_type').with(:ensure => 'absent')
     end
 
     # TODO(EmilienM) Disabled for now: http://git.io/kfTmcA