def _process_received_request(self, scaling_request, fail_count=0): scaling_success = False created_service_instance = None self._logger.info("Received request: %s", scaling_request) try: if scaling_request.command == DynamiteScalingCommand.SCALE_UP: service_name = scaling_request.service_name created_service_instance = self._dynamite_service_handler.add_new_fleet_service_instance(service_name) elif scaling_request.command == DynamiteScalingCommand.SCALE_DOWN: service_name = scaling_request.service_name service_instance_name = scaling_request.service_instance_name self._dynamite_service_handler.remove_fleet_service_instance(service_name, service_instance_name) scaling_success = True except FleetSubmissionError as fse: self._logger.error("Submitting fleet file failed!") raise FleetSubmissionError("Submission error on unit: {}" + service_name) from fse except FleetStartError as fse: self._logger.error("Starting fleet service failed!") if created_service_instance is not None: self._unload_unit(created_service_instance) raise FleetStartError ("Unit start error on unit: {}" + service_name) from fse except FleetDestroyError as fde: self._logger.error("Destroying fleet service failed!") raise FleetDestroyError ("Failed destroying unit: {}" + service_name) from fde except FleetCommunicationError as fce: self._logger.error("Communication with fleet failed!") raise FleetCommunicationError("Fleet communication error working on unit: {}" + service_name) from fce except: self._logger.exception("Unexpected error") scaling_response = DynamiteScalingResponse.from_scaling_request(scaling_request, scaling_success) self._scaling_response_sender.send_response(scaling_response) scaling_response.message_processed()
def test_from_scaling_request(self): scaling_request = DynamiteScalingRequest() scaling_request.command = DynamiteScalingCommand.SCALE_DOWN scaling_request.failure_counter = 4 scaling_request.service_instance_name = "apache_service_instance_name" scaling_request.service_name = "apache_service_name" scaling_response = DynamiteScalingResponse.from_scaling_request(scaling_request, True) assert scaling_response.command == scaling_request.command assert scaling_response.service_instance_name == scaling_request.service_instance_name assert scaling_response.service_name == scaling_request.service_name assert scaling_response.failure_counter == scaling_request.failure_counter assert scaling_response.success is True
def test_from_scaling_request(self): scaling_request = DynamiteScalingRequest() scaling_request.command = DynamiteScalingCommand.SCALE_DOWN scaling_request.failure_counter = 4 scaling_request.service_instance_name = "apache_service_instance_name" scaling_request.service_name = "apache_service_name" scaling_response = DynamiteScalingResponse.from_scaling_request( scaling_request, True) assert scaling_response.command == scaling_request.command assert scaling_response.service_instance_name == scaling_request.service_instance_name assert scaling_response.service_name == scaling_request.service_name assert scaling_response.failure_counter == scaling_request.failure_counter assert scaling_response.success is True
def _process_received_request(self, scaling_request, fail_count=0): scaling_success = False created_service_instance = None try: if scaling_request.command == DynamiteScalingCommand.SCALE_UP: service_name = scaling_request.service_name created_service_instance = self._dynamite_service_handler.add_new_fleet_service_instance(service_name) elif scaling_request.command == DynamiteScalingCommand.SCALE_DOWN: service_name = scaling_request.service_name service_instance_name = scaling_request.service_instance_name self._dynamite_service_handler.remove_fleet_service_instance(service_name, service_instance_name) scaling_success = True except FleetSubmissionError: self._logger.exception("Submitting fleet file failed!") retry_success = self._retry_processing_request(scaling_request, fail_count) if retry_success: return except FleetStartError: self._logger.exception("Starting fleet service failed!") if created_service_instance is not None: self._unload_unit(created_service_instance) retry_success = self._retry_processing_request(scaling_request, fail_count) if retry_success: return except FleetDestroyError: self._logger.exception("Destroying fleet service failed!") retry_success = self._retry_processing_request(scaling_request, fail_count) if retry_success: return except FleetCommunicationError: self._logger.exception("Communication with fleet failed!") scaling_response = DynamiteScalingResponse.from_scaling_request(scaling_request, scaling_success) self._scaling_response_sender.send_response(scaling_response) scaling_response.message_processed()