Move deps & external hooks into a standalone class

Previously the anchors and dependencies that allow external hooks were
all in the main ::heat class.  However, if you wanted to include just
::heat::db::mysql, then it would fail, since it assumed the main heat
class was included.  This moves all of those resources and relationships
into a new class, ::heat::deps.  All of the classes will now include
this class so that the anchors and deps are always evaluated even if
only a portion of the classes are used, and even if ::heat isn't pulled
in.

Change-Id: I4297df160a7afae2b66c1ac76e37de313fa4fb09
Closes-Bug: #1507934

manifests/api.pp

@@ -59,6 +59,7 @@ class heat::api (
 ) {
 
   include ::heat
+  include ::heat::deps
   include ::heat::params
   include ::heat::policy
 

manifests/api_cfn.pp

@@ -62,6 +62,7 @@ class heat::api_cfn (
 ) {
 
   include ::heat
+  include ::heat::deps
   include ::heat::params
   include ::heat::policy
 

manifests/api_cloudwatch.pp

@@ -61,6 +61,7 @@ class heat::api_cloudwatch (
 ) {
 
   include ::heat
+  include ::heat::deps
   include ::heat::params
   include ::heat::policy
 

manifests/client.pp

@@ -11,6 +11,7 @@ class heat::client (
   $ensure = 'present'
 ) {
 
+  include ::heat::deps
   include ::heat::params
 
   package { 'python-heatclient':

manifests/config.pp

@@ -24,6 +24,8 @@ class heat::config (
   $heat_config = {},
 ) {
 
+  include ::heat::deps
+
   validate_hash($heat_config)
 
   create_resources('heat_config', $heat_config)

manifests/db.pp

@@ -48,6 +48,8 @@ class heat::db (
   $sync_db                 = true,
 ) {
 
+  include ::heat::deps
+
   # NOTE(spredzy): In order to keep backward compatibility we rely on the pick function
   # to use heat::<myparam> if heat::db::<myparam> isn't specified.
   $database_connection_real = pick($::heat::database_connection, $database_connection)

manifests/db/mysql.pp

@@ -50,6 +50,8 @@ class heat::db::mysql(
   $mysql_module  = undef
 ) {
 
+  include ::heat::deps
+
   if $mysql_module {
     warning('The mysql_module parameter is deprecated. The latest 2.x mysql module will be used.')
   }

manifests/db/postgresql.pp

@@ -32,6 +32,8 @@ class heat::db::postgresql(
   $privileges = 'ALL',
 ) {
 
+  include ::heat::deps
+
   ::openstacklib::db::postgresql { 'heat':
     password_hash => postgresql_password($user, $password),
     dbname        => $dbname,

manifests/db/sync.pp

@@ -3,6 +3,7 @@
 #
 class heat::db::sync {
 
+  include ::heat::deps
   include ::heat::params
 
   exec { 'heat-dbsync':

manifests/deps.pp

@@ -0,0 +1,30 @@
+# == Class: heat::deps
+#
+#  Heat anchors and dependency management
+#
+class heat::deps {
+  # Setup anchors for install, config and service phases of the module.  These
+  # anchors allow external modules to hook the begin and end of any of these
+  # phases.  Package or service management can also be replaced by ensuring the
+  # package is absent or turning off service management and having the
+  # replacement depend on the appropriate anchors.  When applicable, end tags
+  # should be notified so that subscribers can determine if installation,
+  # config or service state changed and act on that if needed.
+  anchor { 'heat::install::begin': }
+  -> Package<| tag == 'heat-package'|>
+  ~> anchor { 'heat::install::end': }
+  -> anchor { 'heat::config::begin': }
+  -> Heat_config<||>
+  ~> anchor { 'heat::config::end': }
+  -> anchor { 'heat::db::begin': }
+  -> anchor { 'heat::db::end': }
+  ~> anchor { 'heat::dbsync::begin': }
+  -> anchor { 'heat::dbsync::end': }
+  ~> anchor { 'heat::service::begin': }
+  ~> Service<| tag == 'heat-service' |>
+  ~> anchor { 'heat::service::end': }
+
+  # Installation or config changes will always restart services.
+  Anchor['heat::install::end'] ~> Anchor['heat::service::begin']
+  Anchor['heat::config::end']  ~> Anchor['heat::service::begin']
+}

manifests/engine.pp

@@ -93,6 +93,8 @@ class heat::engine (
   $trusts_delegated_roles              = ['heat_stack_owner'],
 ) {
 
+  include ::heat::deps
+
   # Validate Heat Engine AES key
   # must be either 16, 24, or 32 bytes long
   # https://bugs.launchpad.net/heat/+bug/1415887

manifests/init.pp

@@ -299,6 +299,7 @@ class heat(
 
   include ::heat::logging
   include ::heat::db
+  include ::heat::deps
   include ::heat::params
 
   if $kombu_ssl_ca_certs and !$rabbit_use_ssl {
@@ -544,29 +545,4 @@ class heat(
   } else {
     heat_config { 'DEFAULT/enable_stack_abandon': ensure => absent; }
   }
-
-  # Setup anchors for install, config and service phases of the module.  These
-  # anchors allow external modules to hook the begin and end of any of these
-  # phases.  Package or service management can also be replaced by ensuring the
-  # package is absent or turning off service management and having the
-  # replacement depend on the appropriate anchors.  When applicable, end tags
-  # should be notified so that subscribers can determine if installation,
-  # config or service state changed and act on that if needed.
-  anchor { 'heat::install::begin': }
-  -> Package<| tag == 'heat-package'|>
-  ~> anchor { 'heat::install::end': }
-  -> anchor { 'heat::config::begin': }
-  -> Heat_config<||>
-  ~> anchor { 'heat::config::end': }
-  -> anchor { 'heat::db::begin': }
-  -> anchor { 'heat::db::end': }
-  ~> anchor { 'heat::dbsync::begin': }
-  -> anchor { 'heat::dbsync::end': }
-  ~> anchor { 'heat::service::begin': }
-  ~> Service<| tag == 'heat-service' |>
-  ~> anchor { 'heat::service::end': }
-
-  # Installation or config changes will always restart services.
-  Anchor['heat::install::end'] ~> Anchor['heat::service::begin']
-  Anchor['heat::config::end']  ~> Anchor['heat::service::begin']
 }

manifests/keystone/auth.pp

@@ -168,6 +168,8 @@ class heat::keystone::auth (
   $admin_address               = undef,
 ) {
 
+  include ::heat::deps
+
   validate_string($password)
 
   if $version {

manifests/keystone/auth_cfn.pp

@@ -137,6 +137,8 @@ class heat::keystone::auth_cfn (
   $admin_address        = undef,
 ) {
 
+  include ::heat::deps
+
   validate_string($password)
 
   if $version {

manifests/keystone/domain.pp

@@ -49,6 +49,7 @@ class heat::keystone::domain (
   $keystone_tenant    = undef,
 ) {
 
+  include ::heat::deps
   include ::heat::params
 
   if $auth_url {

manifests/logging.pp

@@ -110,6 +110,8 @@ class heat::logging(
   $log_date_format               = undef,
 ) {
 
+  include ::heat::deps
+
   # NOTE(spredzy): In order to keep backward compatibility we rely on the pick function
   # to use heat::<myparam> first then heat::logging::<myparam>.
   $use_syslog_real = pick($::heat::use_syslog,$use_syslog)

manifests/policy.pp

@@ -23,6 +23,8 @@ class heat::policy (
   $policy_path = '/etc/heat/policy.json',
 ) {
 
+  include ::heat::deps
+
   validate_hash($policies)
 
   Openstacklib::Policy::Base {

spec/classes/heat_deps_spec.rb

@@ -0,0 +1,17 @@
+require 'spec_helper'
+
+describe 'heat::deps' do
+
+  it 'set up the anchors' do
+    is_expected.to contain_anchor('heat::install::begin')
+    is_expected.to contain_anchor('heat::install::end')
+    is_expected.to contain_anchor('heat::config::begin')
+    is_expected.to contain_anchor('heat::config::end')
+    is_expected.to contain_anchor('heat::db::begin')
+    is_expected.to contain_anchor('heat::db::end')
+    is_expected.to contain_anchor('heat::dbsync::begin')
+    is_expected.to contain_anchor('heat::dbsync::end')
+    is_expected.to contain_anchor('heat::service::begin')
+    is_expected.to contain_anchor('heat::service::end')
+  end
+end