Log worker name in steno logger (#4170)

lib/delayed_job/delayed_worker.rb

@@ -61,6 +61,7 @@ def get_initialized_delayed_worker(config, logger)
 
     worker = Delayed::Worker.new(@queue_options)
     worker.name = @queue_options[:worker_name]
+    Steno.config.context.data[:worker_name] = worker.name
     worker
   end
 

lib/delayed_job/threaded_worker.rb

@@ -33,6 +33,7 @@ def start
       @num_threads.times do |thread_index|
         thread = Thread.new do
           Thread.current[:thread_index] = thread_index
+          Steno.config.context.data[:worker_name] = name # override logged worker name with thread specific name
           threaded_start
         rescue Exception => e # rubocop:disable Lint/RescueException
           say "Unexpected error: #{e.message}\n#{e.backtrace.join("\n")}", 'error'

spec/unit/lib/delayed_job/delayed_worker_spec.rb

@@ -69,6 +69,8 @@
   describe '#start_working' do
     let(:cc_delayed_worker) { CloudController::DelayedWorker.new(options) }
 
+    before { allow(delayed_worker).to receive(:name).and_return(options[:name]) }
+
     it 'sets up the environment and starts the worker' do
       expect(environment).to receive(:setup_environment).with(nil)
       expect(Delayed::Worker).to receive(:new).with(anything).and_return(delayed_worker)
@@ -86,10 +88,16 @@
       expect(Delayed::Worker.sleep_delay).to eq(5)
     end
 
+    it 'sets the worker name in the Steno context' do
+      cc_delayed_worker.start_working
+      expect(Steno.config.context.data[:worker_name]).to eq(options[:name])
+    end
+
     context 'when the number of threads is specified' do
       before do
         allow(Delayed).to receive(:remove_const).with(:Worker)
         allow(Delayed).to receive(:const_set).with(:Worker, Delayed::ThreadedWorker)
+        allow(threaded_worker).to receive(:name)
         options[:num_threads] = 7
       end
 
@@ -122,7 +130,7 @@
         expect(environment).to receive(:setup_environment).with(nil)
         expect(Delayed::Worker).to receive(:new).with(anything).and_return(delayed_worker).once
         expect(delayed_worker).to receive(:name=).with(options[:name]).once
-        expect(delayed_worker).to receive(:name).and_return(options[:name]).once
+        expect(delayed_worker).to receive(:name).and_return(options[:name]).twice
         expect(Delayed::Job).to receive(:clear_locks!).with(options[:name]).once
 
         cc_delayed_worker.clear_locks!
@@ -134,7 +142,7 @@
         expect(environment).to receive(:setup_environment).with(nil)
         expect(Delayed::Worker).to receive(:new).with(anything).and_return(threaded_worker).once
         expect(threaded_worker).to receive(:name=).with(options[:name]).once
-        expect(threaded_worker).to receive(:name).and_return(options[:name]).once
+        expect(threaded_worker).to receive(:name).and_return(options[:name]).twice
         expect(threaded_worker).to receive(:names_with_threads).and_return(["#{options[:name]} thread:1", "#{options[:name]} thread:2"]).once
         expect(Delayed::Job).to receive(:clear_locks!).with(options[:name]).once
         expect(Delayed::Job).to receive(:clear_locks!).with("#{options[:name]} thread:1").once

spec/unit/lib/delayed_job/threaded_worker_spec.rb

@@ -62,6 +62,16 @@
       expect { worker.start }.to raise_error('Unexpected error occurred in one of the worker threads')
       expect(worker.instance_variable_get(:@unexpected_error)).to be true
     end
+
+    it 'sets the worker name in the Steno context' do
+      steno_data_spy = spy('data')
+      allow(Steno.config.context).to receive(:data).and_return(steno_data_spy)
+
+      worker.start
+      worker.instance_variable_get(:@threads).each_with_index do |_, index|
+        expect(steno_data_spy).to have_received(:[]=).with(:worker_name, "#{worker_name} thread:#{index + 1}")
+      end
+    end
   end
 
   describe '#names_with_threads' do