Use shared ExclusiveLeaseGuard module

app/workers/ci/stuck_builds/drop_scheduled_worker.rb

@@ -4,6 +4,7 @@ module Ci
   module StuckBuilds
     class DropScheduledWorker
       include ApplicationWorker
+      include ExclusiveLeaseGuard
 
       idempotent!
 
@@ -17,26 +18,16 @@ module Ci
 
       feature_category :continuous_integration
 
-      EXCLUSIVE_LEASE_KEY = 'ci_stuck_builds_drop_scheduled_worker_lease'
-
       def perform
-        return unless try_obtain_lease
-
-        begin
+        try_obtain_lease do
           Ci::StuckBuilds::DropScheduledService.new.execute
-        ensure
-          remove_lease
         end
       end
 
       private
 
-      def try_obtain_lease
-        @uuid = Gitlab::ExclusiveLease.new(EXCLUSIVE_LEASE_KEY, timeout: 30.minutes).try_obtain
-      end
-
-      def remove_lease
-        Gitlab::ExclusiveLease.cancel(EXCLUSIVE_LEASE_KEY, @uuid)
+      def lease_timeout
+        30.minutes
       end
     end
   end

spec/workers/ci/stuck_builds/drop_scheduled_worker_spec.rb

@@ -5,66 +5,24 @@ require 'spec_helper'
 RSpec.describe Ci::StuckBuilds::DropScheduledWorker do
   include ExclusiveLeaseHelpers
 
-  let(:worker_lease_key)  { Ci::StuckBuilds::DropScheduledWorker::EXCLUSIVE_LEASE_KEY }
-  let(:worker_lease_uuid) { SecureRandom.uuid }
-  let(:worker2)           { described_class.new }
-
-  subject(:worker) { described_class.new }
-
-  before do
-    stub_exclusive_lease(worker_lease_key, worker_lease_uuid)
-  end
+  let(:worker)     { described_class.new }
+  let(:lease_uuid) { SecureRandom.uuid }
 
   describe '#perform' do
+    subject { worker.perform }
+
     it_behaves_like 'an idempotent worker'
 
-    it 'executes an instance of Ci::StuckBuilds::DropScheduledService' do
+    it 'executes an instance of Ci::StuckBuilds::DropScheduledService with an exclusive lease' do
+      expect_to_obtain_exclusive_lease(worker.lease_key, lease_uuid)
+
       expect_next_instance_of(Ci::StuckBuilds::DropScheduledService) do |service|
         expect(service).to receive(:execute).exactly(:once)
       end
 
-      worker.perform
-    end
-
-    context 'with an exclusive lease' do
-      it 'does not execute concurrently' do
-        expect(worker).to receive(:remove_lease).exactly(:once)
-        expect(worker2).not_to receive(:remove_lease)
-
-        worker.perform
-
-        stub_exclusive_lease_taken(worker_lease_key)
-
-        worker2.perform
-      end
-
-      it 'can execute in sequence' do
-        expect(worker).to receive(:remove_lease).at_least(:once)
-        expect(worker2).to receive(:remove_lease).at_least(:once)
+      expect_to_cancel_exclusive_lease(worker.lease_key, lease_uuid)
 
-        worker.perform
-        worker2.perform
-      end
-
-      it 'cancels exclusive leases after worker perform' do
-        expect_to_cancel_exclusive_lease(worker_lease_key, worker_lease_uuid)
-
-        worker.perform
-      end
-
-      context 'when the DropScheduledService fails' do
-        it 'ensures cancellation of the exclusive lease' do
-          expect_to_cancel_exclusive_lease(worker_lease_key, worker_lease_uuid)
-
-          allow_next_instance_of(Ci::StuckBuilds::DropScheduledService) do |service|
-            expect(service).to receive(:execute) do
-              raise 'The query timed out'
-            end
-          end
-
-          expect { worker.perform }.to raise_error('The query timed out')
-        end
-      end
+      subject
     end
   end
 end