Use memcached for token caching in barbican authtoken

Use memcached to cache token in barbican authtoken, as in-process
cache, which we currently use, was already deprecated[1].

[1] Ied2b88c8cefe5655a88d0c2f334de04e588fa75a

Change-Id: I5dc9be5a9c6fff46b22064aa1f684be8e48ffa66

manifests/profile/base/barbican/api.pp

@@ -133,6 +133,7 @@ class tripleo::profile::base::barbican::api (
   }
 
   include ::tripleo::profile::base::barbican
+  include ::tripleo::profile::base::barbican::authtoken
 
   if $step >= 4 or ( $step >= 3 and $sync_db ) {
     include ::tripleo::profile::base::barbican::backends

manifests/profile/base/barbican/authtoken.pp

@@ -0,0 +1,44 @@
+# Copyright 2019 Red Hat, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# == Class: tripleo::profile::base::barbican::authtoken
+#
+# Barbican authtoken profile for TripleO
+#
+# [*step*]
+#   (Optional) The current step in deployment. See tripleo-heat-templates
+#   for more details.
+#   Defaults to hiera('step')
+#
+# [*memcached_ips*]
+#   (Optional) Array of ipv4 or ipv6 addresses for memcache.
+#   Defaults to hiera('memcached_node_ips')
+#
+class tripleo::profile::base::barbican::authtoken (
+  $step                = Integer(hiera('step')),
+  $memcached_ips       = hiera('memcached_node_ips'),
+) {
+
+  if $step >= 3 {
+    if is_ipv6_address($memcached_ips[0]) {
+      $memcache_servers = prefix(suffix(any2array(normalize_ip_for_uri($memcached_ips)), ':11211'), 'inet6:')
+    } else {
+      $memcache_servers = suffix(any2array(normalize_ip_for_uri($memcached_ips)), ':11211')
+    }
+
+    class { '::barbican::keystone::authtoken':
+      memcached_servers => $memcache_servers
+    }
+  }
+}

spec/classes/tripleo_profile_base_barbican_api_spec.rb

@@ -18,6 +18,10 @@ require 'spec_helper'
 
 describe 'tripleo::profile::base::barbican::api' do
   shared_examples_for 'tripleo::profile::base::barbican::api' do
+    before :each do
+      facts.merge!({ :step => params[:step] })
+    end
+
     let(:pre_condition) do
       "class { '::tripleo::profile::base::barbican': step => #{params[:step]} }"
     end

spec/classes/tripleo_profile_base_barbican_authtoken_spec.rb

@@ -0,0 +1,70 @@
+#
+# Copyright (C) 2019 Red Hat, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+
+require 'spec_helper'
+
+describe 'tripleo::profile::base::barbican::authtoken' do
+  shared_examples_for 'tripleo::profile::base::barbican::authtoken' do
+    context 'with step less than 3' do
+      let(:params) { {
+        :step => 1,
+      } }
+
+      it {
+        is_expected.to contain_class('tripleo::profile::base::barbican::authtoken')
+        is_expected.to_not contain_class('barbican::keystone::authtoken')
+      }
+    end
+
+    context 'with step 3' do
+      let(:params) { {
+        :step => 3,
+        :memcached_ips => '127.0.0.1',
+      } }
+
+      it {
+        is_expected.to contain_class('tripleo::profile::base::barbican::authtoken')
+        is_expected.to contain_class('barbican::keystone::authtoken').with(
+            :memcached_servers => ['127.0.0.1:11211'])
+      }
+    end
+
+    context 'with step 3 with ipv6' do
+      let(:params) { {
+        :step     => 3,
+        :memcached_ips => '::1',
+      } }
+
+      it {
+        is_expected.to contain_class('tripleo::profile::base::barbican::authtoken')
+        is_expected.to contain_class('barbican::keystone::authtoken').with(
+            :memcached_servers => ['[::1]:11211'])
+      }
+    end
+
+  end
+
+
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge({ :hostname => 'node.example.com' })
+      end
+
+      it_behaves_like 'tripleo::profile::base::barbican::authtoken'
+    end
+  end
+end