logging/agent.pp: Allow one to specify logrotate rule for td-agent

This commit allows one to specify a logrotate rule to manage logging
agent log.

Close #625

.fixtures.yml

@@ -63,6 +63,9 @@ fixtures:
     'fluentd':
       repo: 'git://github.com/enovance/puppet-fluentd.git'
       ref: 'd073a97002c569d8bfc38ac814ee33ed2cb13ca6'
+    'logrotate':
+      repo: 'git://github.com/enovance/puppet-logrotate.git'
+      ref: 'f4d12356301fa2992f51dc7225037bb07556cb28'
     'haproxy':
       repo: 'git://github.com/enovance/puppetlabs-haproxy.git'
       ref: 'fc1166f28d411dfd4f59d4bfd6936595c014a11b'

Puppetfile

@@ -113,6 +113,9 @@ mod 'kwalify',
 mod 'libvirt',
   :git => 'git://github.com/enovance/puppetlabs-libvirt.git',
   :ref => '05808874715ca3e899861a0af139e6a48255d3cb'
+mod 'logrotate',
+  :git => 'git://github.com/enovance/puppet-logrotate.git',
+  :ref => 'f4d12356301fa2992f51dc7225037bb07556cb28'
 mod 'memcached',
   :git => 'git://github.com/enovance/puppet-memcached.git',
   :ref => 'd009260de3c7623003318555ec5ca61217ea3ca1'

manifests/logging/agent.pp

@@ -35,12 +35,17 @@
 #   (optional) Fluentd plugins to install
 #   Defaults to empty hash
 #
+# [*logrotate_rule*]
+#   (optional) A log rotate rule for the logging agent
+#   Defaults to empty hash
+#
 class cloud::logging::agent(
-  $syslog_enable = false,
-  $sources       = {},
-  $matches       = {},
-  $plugins       = {},
-){
+  $syslog_enable  = false,
+  $sources        = {},
+  $matches        = {},
+  $plugins        = {},
+  $logrotate_rule = $cloud::params::logging_agent_logrotate_rule,
+) inherits cloud::params {
 
   include cloud::logging
 
@@ -63,5 +68,6 @@ class cloud::logging::agent(
   create_resources('fluentd::source', $sources, {'require' => 'File[/var/db/td-agent]', 'notify' => 'Service[td-agent]'})
   create_resources('fluentd::match', $matches, {'notify'   => 'Service[td-agent]'})
   create_resources('fluentd::install_plugin', $plugins)
+  create_resources('logrotate::rule', $logrotate_rule)
 
 }

manifests/params.pp

@@ -0,0 +1,39 @@
+#
+# Copyright (C) 2014 eNovance SAS <licensing@enovance.com>
+#
+# 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: cloud::params
+#
+# Configure set of default parameters
+#
+class cloud::params {
+
+  # cloud::logging::agent
+  $logging_agent_logrotate_rule = {
+    'td-agent' => {
+      'path'          => '/var/log/td-agent/td-agent.log',
+      'rotate'        => 30,
+      'compress'      => true,
+      'delaycompress' => true,
+      'ifempty'       => false,
+      'create'        => true,
+      'create_mode'   => '640',
+      'create_owner'  => 'td-agent',
+      'create_group'  => 'td-agent',
+      'sharedscripts' => true,
+      'postrotate'    => ['pid=/var/run/td-agent/td-agent.pid', 'test -s $pid && kill -USR1 "$(cat $pid)"'],
+    }
+  }
+
+}

spec/classes/cloud_logging_agent.rb

@@ -28,11 +28,19 @@ describe 'cloud::logging::agent' do
     end
 
     let :common_params do {
-      :server => '127.0.0.1',
-      :sources => {
+      :plugins        => {},
+      :matches        => {},
+      :sources        => {
         'apache' => {'type' => 'tail', 'configfile' => 'apache'},
         'syslog' => {'type' => 'tail', 'configfile' => 'syslog'}
-      }
+      },
+      :logrotate_rule => {
+        'td-agent' => {
+          'path'     => '/var/log/td-agent/td-agent.log',
+          'rotate'   => '30',
+          'compress' => 'true',
+        }
+      },
     }
     end
 
@@ -80,6 +88,42 @@ describe 'cloud::logging::agent' do
           :group  => 'td-agent',
         })
       end
+
+      it 'has a logrotate rule for td-agent.log' do
+        it should contain_logrotate__rule('td-agent').with({
+          :path     => '/var/log/td-agent/td-agent.log',
+          :rotate   => '30',
+          :compress => 'true',
+        })
+      end
+
+    end
+
+    context 'logrotate rule with default parameters' do
+
+      it 'has a logrotate rule for td-agent.log' do
+        it should contain_logrotate__rule('td-agent').with({
+          :path     => '/var/log/td-agent/td-agent.log',
+          :rotate   => '30',
+          :compress => 'true',
+        })
+      end
+
+    end
+
+    context 'logrotate rule with custom parameters' do
+      let :params do
+        common_params.merge!( {:logrotate_rule => { 'td-agent' => { 'path' => '/foo/bar', 'rotate' => '5', 'compress' => 'false'} }} )
+      end
+
+      it 'has a logrotate rule for td-agent.log' do
+        it should contain_logrotate__rule('td-agent').with({
+          :path     => '/foo/bar',
+          :rotate   => '5',
+          :compress => 'false',
+        })
+      end
+
     end
 
   end