Add general basic functionality to the base barbican class

This is the prep work to migrate some common parameters from the api
class to the base class, and implements basic functionality so that
the base class provides consistent functionality in all modules.

Change-Id: I0e20b135e8c29f1d27d39d2940d49ea30a1f512c

manifests/init.pp

@@ -1,9 +1,33 @@
 # == Class: barbican
 #
-# Full description of class barbican here.
+# Barbican base package & configuration
 #
-class barbican {
+# === Parameters
+#
+# [*package_ensure*]
+#   (Optional) Ensure state for package.
+#   Defaults to 'present'.
+#
+# [*purge_config*]
+#   (optional) Whether to set only the specified config options
+#   in the cinder config.
+#   Defaults to false.
+#
+class barbican(
+  package_ensure => 'present',
+  purge_config   => false,
+) {
 
+  include barbican::deps
   include barbican::params
 
+  package { 'barbican':
+    ensure => package_ensure,
+    name   => $::barbican::params::common_package_name,
+    tag    => ['openstack', 'barbican-packages'],
+  }
+
+  resources { 'barbican_config':
+    purge => $purge_config,
+  }
 }

manifests/params.pp

@@ -12,6 +12,7 @@ class barbican::params {
 
   case $::osfamily {
     'RedHat': {
+      $common_package_name            = 'openstack-barbican-common'
       $api_package_name               = 'openstack-barbican-api'
       $api_service_name               = 'openstack-barbican-api'
       $worker_package_name            = 'openstack-barbican-worker'
@@ -22,6 +23,7 @@ class barbican::params {
       $barbican_wsgi_script_source    = '/usr/bin/barbican-wsgi-api'
     }
     'Debian': {
+      $common_package_name            = 'barbican-common'
       $api_service_name               = 'barbican-api'
       $api_package_name               = 'barbican-api'
       $worker_package_name            = 'barbican-worker'

releasenotes/notes/barbican-base-opts-5d7598b51270cc64.yaml

@@ -0,0 +1,9 @@
+---
+features:
+  - |
+    The ``barbican`` class now installs the ``barbican-common`` package. Status
+    of the package can be customized by the ``barbican::package_ensure``
+    parameter.
+
+  - |
+    The ``barbican::purge_config`` parameter has been added.

spec/classes/barbican_init_spec.rb

@@ -0,0 +1,49 @@
+require 'spec_helper'
+
+describe 'barbican' do
+
+  shared_examples 'barbican' do
+
+    it { is_expected.to contain_class('barbican::deps') }
+
+    context 'with default parameters' do
+      let :params do
+        {}
+      end
+
+      it 'installs packages' do
+        is_expected.to contain_package('barbican').with(
+          :name   => platform_params[:barbican_common_package],
+          :ensure => 'present',
+          :tag    => ['openstack', 'barbican-package']
+        )
+      end
+
+      it 'passes purge to resource' do
+        is_expected.to contain_resources('barbican_config').with({
+          :purge => false
+        })
+      end
+    end
+  end
+
+  on_supported_os({
+    :supported_os   => OSDefaults.get_supported_os
+  }).each do |os,facts|
+    context "on #{os}" do
+      let (:facts) do
+        facts.merge!(OSDefaults.get_facts())
+      end
+
+      let(:platform_params) do
+        case facts[:osfamily]
+        when 'Debian'
+          { :barbican_common_package => 'barbican-common' }
+        when 'RedHat'
+          { :barbican_common_package => 'openstack-barbican-common' }
+        end
+      end
+      it_behaves_like 'barbican'
+    end
+  end
+end