nova: Omit auth options when notification is disabled

If send_power_notifications is false and the notification is disabled,
ironic does not need to send requests to Nova. Thus password and
the other auth options are not needed.

Change-Id: I3f5071b85df029f5db535b2b0cf97edd317bc006

manifests/nova.pp

@@ -13,7 +13,9 @@
 # == Class: ironic::nova
 #
 # [*password*]
-#   (Required) The admin password for ironic to connect to nova.
+#   (Optional) The admin password for ironic to connect to nova.
+#   This is required when send_power_notifications is true.
+#   Defaults to undef
 #
 # [*auth_type*]
 #   (Optional) The authentication plugin to use when connecting to nova.
@@ -54,10 +56,10 @@
 #
 # [*send_power_notifications*]
 #   (Optional) Enable the support for power state change callbacks to nova.
-#   Defaults to $facts['os_service_default']
+#   Defaults to true
 #
 class ironic::nova (
-  $password,
+  $password                         = undef,
   $auth_type                        = 'password',
   $auth_url                         = 'http://127.0.0.1:5000',
   $project_name                     = 'services',
@@ -67,11 +69,20 @@ class ironic::nova (
   $system_scope                     = $facts['os_service_default'],
   $region_name                      = $facts['os_service_default'],
   $endpoint_override                = $facts['os_service_default'],
-  $send_power_notifications = $facts['os_service_default'],
+  Boolean $send_power_notifications = true,
 ) {
 
   include ironic::deps
 
+  ironic_config {
+    'nova/send_power_notifications': value => $send_power_notifications;
+  }
+
+  if $send_power_notifications {
+    if password == undef {
+      fail('The password parameter is required when send_power_notifications is true')
+    }
+
     if is_service_default($system_scope) {
       $project_name_real = $project_name
       $project_domain_name_real = $project_domain_name
@@ -91,6 +102,19 @@ class ironic::nova (
       'nova/system_scope':        value => $system_scope;
       'nova/region_name':         value => $region_name;
       'nova/endpoint_override':   value => $endpoint_override;
-    'nova/send_power_notifications': value => $send_power_notifications;
+    }
+  } else {
+    ironic_config {
+      'nova/auth_type':           ensure => absent;
+      'nova/username':            ensure => absent;
+      'nova/password':            ensure => absent;
+      'nova/auth_url':            ensure => absent;
+      'nova/project_name':        ensure => absent;
+      'nova/user_domain_name':    ensure => absent;
+      'nova/project_domain_name': ensure => absent;
+      'nova/system_scope':        ensure => absent;
+      'nova/region_name':         ensure => absent;
+      'nova/endpoint_override':   ensure => absent;
+    }
   }
 }

spec/classes/ironic_nova_spec.rb

@@ -17,11 +17,12 @@ require 'spec_helper'
 
 describe 'ironic::nova' do
 
+  shared_examples_for 'ironic nova configuration' do
+    context 'with defaults' do
       let :params do
         { :password => 'secret' }
       end
 
-  shared_examples_for 'ironic nova configuration' do
       it 'configures ironic.conf' do
         is_expected.to contain_ironic_config('nova/auth_type').with_value('password')
         is_expected.to contain_ironic_config('nova/auth_url').with_value('http://127.0.0.1:5000')
@@ -33,12 +34,14 @@ describe 'ironic::nova' do
         is_expected.to contain_ironic_config('nova/system_scope').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_ironic_config('nova/region_name').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_ironic_config('nova/endpoint_override').with_value('<SERVICE DEFAULT>')
-      is_expected.to contain_ironic_config('nova/send_power_notifications').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_ironic_config('nova/send_power_notifications').with_value(true)
+      end
     end
 
     context 'when overriding parameters' do
-      before :each do
+      let :params do
-        params.merge!(
+        {
+          :password                 => 'secret',
           :auth_type                => 'noauth',
           :auth_url                 => 'http://example.com',
           :project_name             => 'project1',
@@ -47,8 +50,8 @@ describe 'ironic::nova' do
           :project_domain_name      => 'NonDefault',
           :region_name              => 'regionTwo',
           :endpoint_override        => 'http://example2.com',
-          :send_power_notifications => false,
+          :send_power_notifications => true,
-        )
+        }
       end
 
       it 'should replace default parameter with new value' do
@@ -66,10 +69,11 @@ describe 'ironic::nova' do
     end
 
     context 'when system_scope is set' do
-      before :each do
+      let :params do
-        params.merge!(
+        {
+          :password     => 'secret',
           :system_scope => 'all',
-        )
+        }
       end
 
       it 'configures system-scoped credential' do
@@ -78,6 +82,25 @@ describe 'ironic::nova' do
         is_expected.to contain_ironic_config('nova/system_scope').with_value('all')
       end
     end
+
+    context 'when send_power_notifications is false' do
+      let :params do
+        { :send_power_notifications => false }
+      end
+
+      it 'configures only send_power_notifications' do
+        is_expected.to contain_ironic_config('nova/auth_type').with_ensure('absent')
+        is_expected.to contain_ironic_config('nova/auth_url').with_ensure('absent')
+        is_expected.to contain_ironic_config('nova/project_name').with_ensure('absent')
+        is_expected.to contain_ironic_config('nova/username').with_ensure('absent')
+        is_expected.to contain_ironic_config('nova/user_domain_name').with_ensure('absent')
+        is_expected.to contain_ironic_config('nova/project_domain_name').with_ensure('absent')
+        is_expected.to contain_ironic_config('nova/region_name').with_ensure('absent')
+        is_expected.to contain_ironic_config('nova/system_scope').with_ensure('absent')
+        is_expected.to contain_ironic_config('nova/endpoint_override').with_ensure('absent')
+        is_expected.to contain_ironic_config('nova/send_power_notifications').with_value(false)
+      end
+    end
   end
 
   on_supported_os({