From 0227af92b1851d5eac4cb423dc0c9935dbc733a3 Mon Sep 17 00:00:00 2001
From: Cristian Bica <cristian.bica@gmail.com>
Date: Tue, 20 May 2014 14:41:14 +0300
Subject: Added logging capabilities

---
 lib/active_job/base.rb           |  5 ++++-
 lib/active_job/enqueuing.rb      |  1 +
 lib/active_job/log_subscriber.rb | 19 +++++++++++++++++++
 lib/active_job/logging.rb        |  5 +++++
 4 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 lib/active_job/log_subscriber.rb
 create mode 100644 lib/active_job/logging.rb

diff --git a/lib/active_job/base.rb b/lib/active_job/base.rb
index 77b929d4af..ed402bd8d3 100644
--- a/lib/active_job/base.rb
+++ b/lib/active_job/base.rb
@@ -1,11 +1,14 @@
 require 'active_job/queue_adapter'
 require 'active_job/queue_name'
 require 'active_job/enqueuing'
+require 'active_job/logging'
+require 'active_job/log_subscriber'
 
 module ActiveJob
   class Base
     extend QueueAdapter
     extend QueueName
     extend Enqueuing
+    extend Logging
   end
-end
\ No newline at end of file
+end
diff --git a/lib/active_job/enqueuing.rb b/lib/active_job/enqueuing.rb
index 324385216e..46f703481a 100644
--- a/lib/active_job/enqueuing.rb
+++ b/lib/active_job/enqueuing.rb
@@ -11,6 +11,7 @@ module ActiveJob
     # The return value is adapter-specific and may change in a future
     # ActiveJob release.
     def enqueue(*args)
+      ActiveSupport::Notifications.instrument "enqueue.active_job", adapter: queue_adapter, job: self, params: args
       queue_adapter.queue self, *Parameters.serialize(args)
     end
   end
diff --git a/lib/active_job/log_subscriber.rb b/lib/active_job/log_subscriber.rb
new file mode 100644
index 0000000000..81859d8da1
--- /dev/null
+++ b/lib/active_job/log_subscriber.rb
@@ -0,0 +1,19 @@
+module ActiveJob
+  class LogSubscriber < ActiveSupport::LogSubscriber
+
+    def enqueue(event)
+      payload = event.payload
+      params  = payload[:params]
+      adapter = payload[:adapter]
+      job     = payload[:job]
+
+      info "ActiveJob enqueued to #{adapter.name.demodulize} job #{job.name}: #{params.inspect}"
+    end
+
+    def logger
+      ActiveJob::Base.logger
+    end
+  end
+end
+
+ActiveJob::LogSubscriber.attach_to :active_job
diff --git a/lib/active_job/logging.rb b/lib/active_job/logging.rb
new file mode 100644
index 0000000000..7bd77b7ca5
--- /dev/null
+++ b/lib/active_job/logging.rb
@@ -0,0 +1,5 @@
+module ActiveJob
+  module Logging
+    mattr_accessor(:logger) { ActiveSupport::Logger.new(STDOUT) }
+  end
+end
-- 
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