v3(bindings): cant create bindings while SI operations are in progress (cloudfoundry#1862)

[#174257929](https://www.pivotaltracker.com/story/show/174257929)

Author: Derik Evangelista

app/actions/service_credential_binding_create.rb

@@ -79,6 +79,7 @@ def validate!(service_instance, app, volume_mount_services_enabled)
           service_not_bindable! unless service_instance.service_plan.bindable?
           service_not_available! unless service_instance.service_plan.active?
           volume_mount_not_enabled! if service_instance.volume_service? && !volume_mount_services_enabled
+          operation_in_progress! if service_instance.operation_in_progress?
         end
       end
 
@@ -90,6 +91,10 @@ def event_repository
         Repositories::ServiceBindingEventRepository
       end
 
+      def operation_in_progress!
+        raise UnprocessableCreate.new('There is an operation in progress for the service instance')
+      end
+
       def app_is_required!
         raise UnprocessableCreate.new('No app was specified')
       end

spec/request/service_credential_bindings_spec.rb

@@ -1186,6 +1186,17 @@ def check_filtered_bindings(*bindings)
             'code' => 10008,
           }))
         end
+
+        it 'responds with 422 when there is an operation in progress for the service instance' do
+          service_instance.save_with_new_operation({}, { type: 'guacamole', state: 'in progress' })
+          api_call.call admin_headers
+          expect(last_response).to have_status_code(422)
+          expect(parsed_response['errors']).to include(include({
+            'detail' => include('There is an operation in progress for the service instance'),
+            'title' => 'CF-UnprocessableEntity',
+            'code' => 10008,
+          }))
+        end
       end
 
       context 'when the service instance and the app are not in the same space' do

spec/unit/actions/service_credential_binding_create_spec.rb

@@ -119,6 +119,19 @@ module V3
             end
           end
 
+          context 'when there is an operation in progress for the service instance' do
+            it 'raises an error' do
+              service_instance.save_with_new_operation({}, { type: 'tacos', state: 'in progress' })
+
+              expect {
+                action.precursor(service_instance, app: app, volume_mount_services_enabled: false)
+              }.to raise_error(
+                ServiceCredentialBindingCreate::UnprocessableCreate,
+                'There is an operation in progress for the service instance'
+              )
+            end
+          end
+
           context 'when the service is a volume service and service volume mounting is enabled' do
             let(:service_instance) { ManagedServiceInstance.make(:volume_mount, **details) }