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How to use _should_use_stay_open_mode method in localstack

Best Python code snippet using localstack_python

lambda_executors.py

Source:lambda_executors.py

...695            command = shlex.split(container_info.entry_point)696            command.append(inv_context.handler)697            inv_context.lambda_command = command698        lambda_docker_ip = DOCKER_CLIENT.get_container_ip(container_info.name)699        if not self._should_use_stay_open_mode(lambda_function, lambda_docker_ip, check_port=True):700            LOG.debug("Using 'docker exec' to run invocation in docker-reuse Lambda container")701            # disable stay open mode for this one, to prevent starting runtime API server702            env_vars["DOCKER_LAMBDA_STAY_OPEN"] = None703            return DOCKER_CLIENT.exec_in_container(704                container_name_or_id=container_info.name,705                command=inv_context.lambda_command,706                interactive=True,707                env_vars=env_vars,708                stdin=stdin,709            )710        inv_result = self.invoke_lambda(lambda_function, inv_context, lambda_docker_ip)711        return (inv_result.result, inv_result.log_output)712    def invoke_lambda(713        self,714        lambda_function: LambdaFunction,715        inv_context: InvocationContext,716        lambda_docker_ip=None,717    ) -> InvocationResult:718        full_url = self._get_lambda_stay_open_url(lambda_docker_ip)719        client = aws_stack.connect_to_service("lambda", endpoint_url=full_url)720        event = inv_context.event or "{}"721        LOG.debug(f"Calling {full_url} to run invocation in docker-reuse Lambda container")722        response = client.invoke(723            FunctionName=lambda_function.name(),724            InvocationType=inv_context.invocation_type,725            Payload=to_bytes(event),726            LogType="Tail",727        )728        log_output = base64.b64decode(response.get("LogResult") or b"").decode("utf-8")729        result = response["Payload"].read().decode("utf-8")730        if "FunctionError" in response:731            raise InvocationException(732                "Lambda process returned with error. Result: %s. Output:\n%s"733                % (result, log_output),734                log_output,735                result,736            )737        return InvocationResult(result, log_output)738    def _should_use_stay_open_mode(739        self,740        lambda_function: LambdaFunction,741        lambda_docker_ip: Optional[str] = None,742        check_port: bool = False,743    ) -> bool:744        """Return whether to use stay-open execution mode - if we're running in Docker, the given IP745        is defined, and if the target API endpoint is available (optionally, if check_port is True)."""746        if not lambda_docker_ip:747            func_arn = lambda_function.arn()748            container_name = self.get_container_name(func_arn)749            lambda_docker_ip = DOCKER_CLIENT.get_container_ip(container_name_or_id=container_name)750        should_use = lambda_docker_ip and config.LAMBDA_STAY_OPEN_MODE751        if not should_use or not check_port:752            return should_use753        full_url = self._get_lambda_stay_open_url(lambda_docker_ip)754        return is_port_open(full_url)755    def _get_lambda_stay_open_url(self, lambda_docker_ip: str) -> str:756        return f"http://{lambda_docker_ip}:{STAY_OPEN_API_PORT}"757    def _execute(self, func_arn: str, *args, **kwargs) -> InvocationResult:758        if not LAMBDA_CONCURRENCY_LOCK.get(func_arn):759            concurrency_lock = threading.RLock()760            LAMBDA_CONCURRENCY_LOCK[func_arn] = concurrency_lock761        with LAMBDA_CONCURRENCY_LOCK[func_arn]:762            return super(LambdaExecutorReuseContainers, self)._execute(func_arn, *args, **kwargs)763    def startup(self):764        self.cleanup()765        # start a process to remove idle containers766        if config.LAMBDA_REMOVE_CONTAINERS:767            self.start_idle_container_destroyer_interval()768    def cleanup(self, arn: str = None):769        if arn:770            self.function_invoke_times.pop(arn, None)771            return self.destroy_docker_container(arn)772        self.function_invoke_times = {}773        return self.destroy_existing_docker_containers()774    def prime_docker_container(775        self,776        lambda_function: LambdaFunction,777        env_vars: Dict,778        lambda_cwd: str,779        docker_flags: str = None,780    ):781        """782        Prepares a persistent docker container for a specific function.783        :param lambda_function: The Details of the lambda function.784        :param env_vars: The environment variables for the lambda.785        :param lambda_cwd: The local directory containing the code for the lambda function.786        :return: ContainerInfo class containing the container name and default entry point.787        """788        with self.docker_container_lock:789            # Get the container name and id.790            func_arn = lambda_function.arn()791            container_name = self.get_container_name(func_arn)792            status = self.get_docker_container_status(func_arn)793            LOG.debug('Priming Docker container (status "%s"): %s', status, container_name)794            docker_image = Util.docker_image_for_lambda(lambda_function)795            # Container is not running or doesn't exist.796            if status < 1:797                # Make sure the container does not exist in any form/state.798                self.destroy_docker_container(func_arn)799                # get container startup command and run it800                LOG.debug("Creating container: %s", container_name)801                self.create_container(lambda_function, env_vars, lambda_cwd, docker_flags)802                LOG.debug("Starting docker-reuse Lambda container: %s", container_name)803                DOCKER_CLIENT.start_container(container_name)804                def wait_up():805                    cont_status = DOCKER_CLIENT.get_container_status(container_name)806                    assert cont_status == DockerContainerStatus.UP807                    if not in_docker():808                        return809                    # if we're executing in Docker using stay-open mode, additionally check if the target is available810                    lambda_docker_ip = DOCKER_CLIENT.get_container_ip(container_name)811                    if self._should_use_stay_open_mode(lambda_function, lambda_docker_ip):812                        full_url = self._get_lambda_stay_open_url(lambda_docker_ip)813                        wait_for_port_open(full_url, sleep_time=0.5, retries=8)814                # give the container some time to start up815                retry(wait_up, retries=15, sleep=0.8)816            container_network = self.get_docker_container_network(func_arn)817            entry_point = DOCKER_CLIENT.get_image_entrypoint(docker_image)818            LOG.debug(819                'Using entrypoint "%s" for container "%s" on network "%s".',820                entry_point,821                container_name,822                container_network,823            )824            return ContainerInfo(container_name, entry_point)825    def create_container(...

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