From c334bea36228319b3f624443f303447e48e29f3d Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Mon, 19 May 2014 10:55:57 +0200
Subject: Extract QueueAdapter module for setting and looking up adapters

---
 lib/active_job/base.rb          |  9 +++------
 lib/active_job/queue_adapter.rb | 24 ++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 6 deletions(-)
 create mode 100644 lib/active_job/queue_adapter.rb

(limited to 'lib/active_job')

diff --git a/lib/active_job/base.rb b/lib/active_job/base.rb
index 86008d3c94..d3b0fcffa8 100644
--- a/lib/active_job/base.rb
+++ b/lib/active_job/base.rb
@@ -1,9 +1,11 @@
+require 'active_job/queue_adapter'
 require 'active_job/queue_adapters/inline_adapter'
 require 'active_support/core_ext/string/inflections'
 
 module ActiveJob
   class Base
-    cattr_accessor(:queue_adapter)   { ActiveJob::QueueAdapters::InlineAdapter }
+    extend QueueAdapter
+
     cattr_accessor(:queue_base_name) { "active_jobs" }
     cattr_accessor(:queue_name)      { queue_base_name }
 
@@ -15,11 +17,6 @@ module ActiveJob
       def queue_as(part_name)
         self.queue_name = "#{queue_base_name}_#{part_name}"
       end
-
-      def adapter=(adapter_name)
-        require "active_job/queue_adapters/#{adapter_name}_adapter"
-        ActiveJob::Base.queue_adapter = "ActiveJob::QueueAdapters::#{adapter_name.to_s.camelize}Adapter".constantize
-      end
     end
   end
 end
\ No newline at end of file
diff --git a/lib/active_job/queue_adapter.rb b/lib/active_job/queue_adapter.rb
new file mode 100644
index 0000000000..a1987a7dc3
--- /dev/null
+++ b/lib/active_job/queue_adapter.rb
@@ -0,0 +1,24 @@
+require 'active_job/queue_adapters/inline_adapter'
+require 'active_support/core_ext/string/inflections'
+
+module ActiveJob
+  module QueueAdapter
+    mattr_reader(:queue_adapter) { ActiveJob::QueueAdapters::InlineAdapter }
+
+    def queue_adapter=(name_or_adapter)
+      if name_or_adapter.is_a?(Symbol) || name_or_adapter.is_a?(String)
+        adapter = load_adapter(name_or_adapter)
+      else
+        adapter = name_or_adapter
+      end
+      
+      @@queue_adapter = adapter
+    end
+
+    private
+      def load_adapter(name)
+        require "active_job/queue_adapters/#{name}_adapter"
+        "ActiveJob::QueueAdapters::#{name.to_s.camelize}Adapter".constantize
+      end
+  end
+end
\ No newline at end of file
-- 
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