Add Worker rerun action to GcpController

app/controllers/projects/clusters/gcp_controller.rb

 class Projects::Clusters::GcpController < Projects::ApplicationController
   before_action :authorize_read_cluster!
   before_action :authorize_google_api, except: [:login]
-  before_action :authorize_google_project_billing, except: [:login, :check]
+  before_action :authorize_google_project_billing, except: [:login, :check, :run_check]
   before_action :authorize_create_cluster!, only: [:new, :create]
 
   STATUS_POLLING_INTERVAL = 1.minute.to_i
@@ -32,6 +32,15 @@ class Projects::Clusters::GcpController < Projects::ApplicationController
     end
   end
 
+  def run_check
+    respond_to do |format|
+      format.json do
+        CheckGcpProjectBillingWorker.perform_async(token_in_session)
+        head :no_content
+      end
+    end
+  end
+
   def new
     @cluster = ::Clusters::Cluster.new.tap do |cluster|
       cluster.build_provider_gcp

config/routes/project.rb

@@ -192,6 +192,7 @@ constraints(ProjectUrlConstrainer.new) do
             get '/gcp/new', to: 'clusters/gcp#new'
             get '/gcp/login', to: 'clusters/gcp#login'
             get '/gcp/check', to: 'clusters/gcp#check'
+            post '/gcp/check', to: 'clusters/gcp#run_check'
             post '/gcp', to: 'clusters/gcp#create'
           end
         end

spec/controllers/projects/clusters/gcp_controller_spec.rb

@@ -138,6 +138,56 @@ describe Projects::Clusters::GcpController do
     end
   end
 
+  describe 'POST check' do
+    let(:user) { create(:user) }
+
+    before do
+      project.add_master(user)
+      sign_in(user)
+    end
+
+    describe 'functionality' do
+      context 'when access token is valid' do
+        before do
+          stub_google_api_validate_token
+        end
+
+        it 'calls check worker asynchronously' do
+          expect(CheckGcpProjectBillingWorker).to receive(:perform_async)
+
+          expect(go).to have_http_status(:no_content)
+        end
+      end
+
+      context 'when access token is expired' do
+        before do
+          stub_google_api_expired_token
+        end
+
+        it { expect(go).to redirect_to(gcp_login_project_clusters_path(project)) }
+      end
+
+      context 'when access token is not stored in session' do
+        it { expect(go).to redirect_to(gcp_login_project_clusters_path(project)) }
+      end
+    end
+
+    describe 'security' do
+      it { expect { go }.to be_allowed_for(:admin) }
+      it { expect { go }.to be_allowed_for(:owner).of(project) }
+      it { expect { go }.to be_allowed_for(:master).of(project) }
+      it { expect { go }.to be_denied_for(:developer).of(project) }
+      it { expect { go }.to be_denied_for(:reporter).of(project) }
+      it { expect { go }.to be_denied_for(:guest).of(project) }
+      it { expect { go }.to be_denied_for(:user) }
+      it { expect { go }.to be_denied_for(:external) }
+    end
+
+    def go
+      post :run_check, namespace_id: project.namespace, project_id: project, format: :json
+    end
+  end
+
   describe 'GET new' do
     describe 'functionality' do
       let(:user) { create(:user) }