Creation of neutron::db::sync

In order to standardize the way dbsync are run across our modules,
we create a new class neutron::db::sync.
This class will be included if sync_db is enabled.

By making this transition the neutron::db::sync class
can be returned by the ENC.

A use case would be in an highly available environment with 3 galera
nodes, include neutron::server on every node with sync_db set to false
and have the ENC return ceilometer::db::sync just for one node.

Change-Id: I81e824e3e9e8f901b2a0084c7a5ec42c53781864

manifests/db/sync.pp

@@ -0,0 +1,20 @@
+#
+# Class to execute neutron dbsync
+#
+class neutron::db::sync {
+
+  include ::neutron::params
+
+  Package<| title == 'neutron-server' |> -> Exec['neutron-db-sync']
+  Package<| title == 'neutron' |> -> Exec['neutron-db-sync']
+  Neutron_config<||> ~> Exec['neutron-db-sync']
+  Neutron_config<| title == 'database/connection' |> ~> Exec['neutron-db-sync']
+  Exec['neutron-db-sync'] ~> Service <| title == 'neutron-server' |>
+
+  exec { 'neutron-db-sync':
+    command     => 'neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini upgrade head',
+    path        => '/usr/bin',
+    refreshonly => true,
+    logoutput   => on_failure,
+  }
+}

manifests/server.pp

@@ -281,22 +281,7 @@ class neutron::server (
   }
 
   if $sync_db {
-    if ($::neutron::params::server_package) {
+    include ::neutron::db::sync
-      # Debian platforms
-      Package<| title == 'neutron-server' |> ~> Exec['neutron-db-sync']
-    } else {
-      # RH platforms
-      Package<| title == 'neutron' |> ~> Exec['neutron-db-sync']
-    }
-
-    exec { 'neutron-db-sync':
-      command     => 'neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini upgrade head',
-      path        => '/usr/bin',
-      before      => Service['neutron-server'],
-      subscribe   => Neutron_config['database/connection'],
-      refreshonly => true
-    }
-    Neutron_config<||> ~> Exec['neutron-db-sync']
   }
 
   neutron_config {

spec/classes/neutron_db_sync_spec.rb

@@ -0,0 +1,43 @@
+require 'spec_helper'
+
+describe 'neutron::db::sync' do
+
+  shared_examples_for 'neutron-dbsync' do
+
+    it 'runs neutron-db-sync' do
+      is_expected.to contain_exec('neutron-db-sync').with(
+        :command     => 'neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini upgrade head',
+        :path        => '/usr/bin',
+        :refreshonly => 'true',
+        :logoutput   => 'on_failure'
+      )
+    end
+
+  end
+
+  context 'on a RedHat osfamily' do
+    let :facts do
+      {
+        :osfamily                 => 'RedHat',
+        :operatingsystemrelease   => '7.0',
+        :concat_basedir => '/var/lib/puppet/concat'
+      }
+    end
+
+    it_configures 'neutron-dbsync'
+  end
+
+  context 'on a Debian osfamily' do
+    let :facts do
+      {
+        :operatingsystemrelease => '7.8',
+        :operatingsystem        => 'Debian',
+        :osfamily               => 'Debian',
+        :concat_basedir => '/var/lib/puppet/concat'
+      }
+    end
+
+    it_configures 'neutron-dbsync'
+  end
+
+end

spec/classes/neutron_server_spec.rb

@@ -96,7 +96,7 @@ describe 'neutron::server' do
         :ensure  => 'running',
         :require => 'Class[Neutron]'
       )
-      is_expected.not_to contain_exec('neutron-db-sync')
+      is_expected.not_to contain_class('neutron::db::sync')
       is_expected.to contain_neutron_api_config('filter:authtoken/auth_admin_prefix').with(
         :ensure => 'absent'
       )
@@ -236,14 +236,8 @@ describe 'neutron::server' do
         :sync_db => true
       )
     end
-    it 'should exec neutron-db-sync' do
+    it 'includes neutron::db::sync' do
-      is_expected.to contain_exec('neutron-db-sync').with(
+      is_expected.to contain_class('neutron::db::sync')
-        :command     => 'neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini upgrade head',
-        :path        => '/usr/bin',
-        :before      => 'Service[neutron-server]',
-        :subscribe   => 'Neutron_config[database/connection]',
-        :refreshonly => true
-      )
     end
   end