Add delayed_job async handler

lib/rollbar/configuration.rb

@@ -118,6 +118,12 @@ def initialize_copy(orig)
       end
     end
 
+    def use_delayed_job
+      require 'rollbar/delay/delayed_job'
+      @use_async      = true
+      @async_handler  = Rollbar::Delay::DelayedJob
+    end
+
     def use_sidekiq(options = {})
       require 'rollbar/delay/sidekiq' if defined?(Sidekiq)
       @use_async      = true

lib/rollbar/delay/delayed_job.rb

@@ -0,0 +1,15 @@
+module Rollbar
+  module Delay
+    class DelayedJob
+      class << self
+        def call(payload)
+          new.delay.call(payload)
+        end
+      end
+
+      def call(payload)
+        Rollbar.process_from_async_handler(payload)
+      end
+    end
+  end
+end

spec/rollbar/delay/delayed_job_spec.rb

@@ -0,0 +1,20 @@
+require 'spec_helper'
+
+require 'delayed_job'
+require 'delayed/worker'
+require 'rollbar/delay/delayed_job'
+
+describe Rollbar::Delay::DelayedJob do
+  before do
+h    Delayed::Worker.delay_jobs = false
+  end
+
+  describe '.call' do
+    let(:payload) { {} }
+    it 'calls Rollbar' do
+      expect(Rollbar).to receive(:process_from_async_handler).with(payload)
+
+      Rollbar::Delay::DelayedJob.call(payload)
+    end
+  end
+end