From 6eb163a706635c0ab5ede9056a0720f1a5f18f22 Mon Sep 17 00:00:00 2001
From: Cristian Bica <cristian.bica@gmail.com>
Date: Thu, 22 May 2014 23:38:01 +0300
Subject: Tagged logging

---
 lib/active_job/base.rb                            |  4 +-
 lib/active_job/identifier.rb                      | 16 ++++++++
 lib/active_job/logging.rb                         | 50 ++++++++++++++++++-----
 lib/active_job/queue_adapters/sneakers_adapter.rb |  6 +--
 4 files changed, 61 insertions(+), 15 deletions(-)
 create mode 100644 lib/active_job/identifier.rb

(limited to 'lib/active_job')

diff --git a/lib/active_job/base.rb b/lib/active_job/base.rb
index 27733577e4..0c772e3126 100644
--- a/lib/active_job/base.rb
+++ b/lib/active_job/base.rb
@@ -2,8 +2,9 @@ require 'active_job/queue_adapter'
 require 'active_job/queue_name'
 require 'active_job/enqueuing'
 require 'active_job/execution'
-require 'active_job/logging'
 require 'active_job/callbacks'
+require 'active_job/identifier'
+require 'active_job/logging'
 
 module ActiveJob
   class Base
@@ -13,6 +14,7 @@ module ActiveJob
     include Enqueuing
     include Execution
     include Callbacks
+    include Identifier
     include Logging
 
     ActiveSupport.run_load_hooks(:active_job, self)
diff --git a/lib/active_job/identifier.rb b/lib/active_job/identifier.rb
new file mode 100644
index 0000000000..af32b03404
--- /dev/null
+++ b/lib/active_job/identifier.rb
@@ -0,0 +1,16 @@
+require 'active_job/arguments'
+
+module ActiveJob
+  module Identifier
+    extend ActiveSupport::Concern
+
+    included do
+      attr_writer :job_id
+    end
+
+    def job_id
+      @job_id ||= SecureRandom.uuid
+    end
+
+  end
+end
diff --git a/lib/active_job/logging.rb b/lib/active_job/logging.rb
index ede1606027..ea0ba2dddc 100644
--- a/lib/active_job/logging.rb
+++ b/lib/active_job/logging.rb
@@ -3,26 +3,51 @@ require 'active_support/core_ext/string/filters'
 module ActiveJob
   module Logging
     extend ActiveSupport::Concern
-    
+
     included do
       cattr_accessor(:logger) { ActiveSupport::TaggedLogging.new(ActiveSupport::Logger.new(STDOUT)) }
 
+      around_enqueue do |job, block, _|
+        tag_logger do
+          block.call
+        end
+      end
+
+      around_perform do |job, block, _|
+        tag_logger(job.class.name, job.job_id) do
+          payload = {adapter: job.class.queue_adapter, job: job.class, args: job.arguments}
+          ActiveSupport::Notifications.instrument("perform_start.active_job", payload.dup)
+          ActiveSupport::Notifications.instrument("perform.active_job", payload) do |payload|
+            block.call
+          end
+        end
+      end
+
       before_enqueue do |job|
         if job.enqueued_at
-          ActiveSupport::Notifications.instrument "enqueue_at.active_job", 
+          ActiveSupport::Notifications.instrument "enqueue_at.active_job",
             adapter: job.class.queue_adapter, job: job.class, args: job.arguments, timestamp: job.enqueued_at
         else
           ActiveSupport::Notifications.instrument "enqueue.active_job",
             adapter: job.class.queue_adapter, job: job.class, args: job.arguments
         end
       end
-      
-      before_perform do |job|
-        ActiveSupport::Notifications.instrument "perform.active_job",
-          adapter: job.class.queue_adapter, job: job.class, args: job.arguments
-      end
     end
-    
+
+    private
+      def tag_logger(*tags)
+        if logger.respond_to?(:tagged)
+          tags.unshift "ActiveJob" unless logger_tagged_by_active_job?
+          ActiveJob::Base.logger.tagged(*tags){ yield }
+        else
+          yield
+        end
+      end
+
+      def logger_tagged_by_active_job?
+        logger.formatter.current_tags.include?("ActiveJob")
+      end
+
     class LogSubscriber < ActiveSupport::LogSubscriber
       def enqueue(event)
         info "Enqueued #{event.payload[:job].name} to #{queue_name(event)}" + args_info(event)
@@ -32,10 +57,13 @@ module ActiveJob
         info "Enqueued #{event.payload[:job].name} to #{queue_name(event)} at #{enqueued_at(event)}" + args_info(event)
       end
 
-      def perform(event)
-        info "Performed #{event.payload[:job].name} from #{queue_name(event)}" + args_info(event)
+      def perform_start(event)
+        info "Performing #{event.payload[:job].name} from #{queue_name(event)}" + args_info(event)
       end
 
+      def perform(event)
+        info "Performed #{event.payload[:job].name} from #{queue_name(event)} in #{event.duration.round(2).to_s}ms"
+      end
 
       private
         def queue_name(event)
@@ -43,7 +71,7 @@ module ActiveJob
         end
 
         def args_info(event)
-          event.payload[:args].any? ? ": #{event.payload[:args].inspect}" : ""
+          event.payload[:args].any? ? " with arguments: #{event.payload[:args].map(&:inspect).join(", ")}" : ""
         end
 
         def enqueued_at(event)
diff --git a/lib/active_job/queue_adapters/sneakers_adapter.rb b/lib/active_job/queue_adapters/sneakers_adapter.rb
index 3ca7745506..f7da691935 100644
--- a/lib/active_job/queue_adapters/sneakers_adapter.rb
+++ b/lib/active_job/queue_adapters/sneakers_adapter.rb
@@ -4,11 +4,11 @@ require 'thread'
 module ActiveJob
   module QueueAdapters
     class SneakersAdapter
-      @mutex = Mutex.new
-        
+      @monitor = Monitor.new
+
       class << self
         def enqueue(job, *args)
-          @mutex.synchronize do
+          @monitor.synchronize do
             JobWrapper.from_queue job.queue_name
             JobWrapper.enqueue [ job, *args ]
           end
-- 
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