Check if project exists before creating deployment

app/services/create_deployment_service.rb

@@ -2,6 +2,8 @@
 class CreateDeploymentService < BaseService
   def execute(deployable = nil)
+    return unless executable?
+
     ActiveRecord::Base.transaction do
       @deployable = deployable
       @environment = prepare_environment
@@ -14,6 +16,10 @@ def execute(deployable = nil)
   private
+  def executable?
+    project && name.present?
+  end
+
   def deploy
     project.deployments.create(
       environment: @environment,

app/workers/build_success_worker.rb

@@ -4,8 +4,6 @@ class BuildSuccessWorker
   def perform(build_id)
     Ci::Build.find_by(id: build_id).try do |build|
-      return unless build.project
-
       create_deployment(build)
     end
   end

spec/services/create_deployment_service_spec.rb

@@ -84,11 +84,22 @@
         expect(subject).to be_persisted
       end
     end
+
+    context 'when project was removed' do
+      let(:project) { nil }
+
+      it 'does not create deployment or environment' do
+        expect { subject }.not_to raise_error
+
+        expect(Environment.count).to be_zero
+        expect(Deployment.count).to be_zero
+      end
+    end
   end
   describe 'processing of builds' do
     let(:environment) { nil }
-    
+
     shared_examples 'does not create environment and deployment' do
       it 'does not create a new environment' do
         expect { subject }.not_to change { Environment.count }
@@ -133,12 +144,12 @@
     context 'without environment specified' do
       let(:build) { create(:ci_build, project: project) }
-      
+
       it_behaves_like 'does not create environment and deployment' do
         subject { build.success }
       end
     end
-    
+
     context 'when environment is specified' do
       let(:pipeline) { create(:ci_pipeline, project: project) }
       let(:build) { create(:ci_build, pipeline: pipeline, environment: 'production', options: options) }