Issue 3825 - Replace Logstash setup with Fluentd

modules/adblockplus/manifests/log.pp

 # == Class: adblockplus::log
 #
 # Default root namespace for integrating custom logging entities.
 #
 # === Parameters:
 #
+# [*ensure*]
+#   Whether associated resources are ment to be 'present' or 'absent'.
+#
 # [*rotations*]
 #   A hash of adblockplus::log::rotation $name => $parameter items
 #   to set up in this context, i.e. via Hiera.
 #
 # === Examples:
 #
 #   class {'adblockplus::log':
 #     rotations => {
 #       # see adblockplus::log::rotation
 #     },
 #   }
 #
 class adblockplus::log (
+  $ensure = 'present',
   $rotations = hiera('adblockplus::log::rotations', {}),
 ) {
 
   include adblockplus
-  realize(File[$adblockplus::directory])
 
   # Used as internal constants within adblockplus::log::* resources
   $directory = "$adblockplus::directory/log"
-  $group = 'log'
+  $group = 'adm'
   $user = 'log'
 
+  # Required on both log generating and log processing hosts
+  class {'fluent':
+    package => {
+      ensure =>  $ensure ? {
+        'present' => '2.3.1-0',
+        default => 'absent',
+      },
+      provider => 'apt',
+    },
+    user => {
+      groups => [$group],
+      shell => '/bin/sh',
+    }
+  }
+
   # Invoke realize(File[$adblockplus::log::directory]) when neccessary
   @file {$directory:
     ensure => 'directory',
+    group => $group,
+    mode => 0750,
+    owner => 'root',
     require => File[$adblockplus::directory],
   }
 
   # Invoke realize(User[$adblockplus::log::user]) when necessary
   @user {$user:
-    ensure => 'present',
+    ensure => $ensure,
     managehome => true,
+    groups => [$group],
   }
 
   # See modules/adblockplus/manifests/log/rotation.pp
   create_resources('adblockplus::log::rotation', $rotations)
 }