How to use prepare_docker_start method in localstack

Best Python code snippet using localstack_python

bootstrap.py

Source:bootstrap.py

...413        except Exception as e:414            LOG.info("error cleaning up localstack container %s: %s", self.container.name, e)415class ContainerExists(Exception):416    pass417def prepare_docker_start():418    # prepare environment for docker start419    container_name = config.MAIN_CONTAINER_NAME420    if DOCKER_CLIENT.is_container_running(container_name):421        raise ContainerExists('LocalStack container named "%s" is already running' % container_name)422    if config.dirs.tmp != config.dirs.functions and not config.LAMBDA_REMOTE_DOCKER:423        # Logger is not initialized at this point, so the warning is displayed via print424        print(425            f"WARNING: The detected temp folder for localstack ({config.dirs.tmp}) is not equal to the "426            f"HOST_TMP_FOLDER environment variable set ({config.dirs.functions})."427        )428    os.environ[ENV_SCRIPT_STARTING_DOCKER] = "1"429    # make sure temp folder exists430    mkdir(config.dirs.tmp)431    try:432        chmod_r(config.dirs.tmp, 0o777)433    except Exception:434        pass435def configure_container(container: LocalstackContainer):436    """437    Configuration routine for the LocalstackContainer.438    """439    # get additional configured flags440    user_flags = config.DOCKER_FLAGS441    user_flags = extract_port_flags(user_flags, container.ports)442    container.additional_flags.extend(shlex.split(user_flags))443    # get additional parameters from plugins444    hooks.configure_localstack_container.run(container)445    # construct default port mappings446    service_ports = config.SERVICE_PORTS447    if service_ports.get("edge") == 0:448        service_ports.pop("edge")449    for port in service_ports.values():450        if port:451            container.ports.add(port)452    for port in range(config.EXTERNAL_SERVICE_PORTS_START, config.EXTERNAL_SERVICE_PORTS_END):453        container.ports.add(port)454    if config.DEVELOP:455        container.ports.add(config.DEVELOP_PORT)456    # environment variables457    # pass through environment variables defined in config458    for env_var in config.CONFIG_ENV_VARS:459        value = os.environ.get(env_var, None)460        if value is not None:461            container.env_vars[env_var] = value462    container.env_vars["DOCKER_HOST"] = f"unix://{config.DOCKER_SOCK}"463    container.env_vars["HOST_TMP_FOLDER"] = config.dirs.functions  # TODO: rename env var464    # TODO this is default now, remove once a considerate time is passed465    # to activate proper signal handling466    container.env_vars["SET_TERM_HANDLER"] = "1"467    configure_volume_mounts(container)468    # mount docker socket469    container.volumes.append((config.DOCKER_SOCK, config.DOCKER_SOCK))470    container.additional_flags.append("--privileged")471def configure_volume_mounts(container: LocalstackContainer):472    if not config.LEGACY_DIRECTORIES:473        container.volumes.add(VolumeBind(config.VOLUME_DIR, DEFAULT_VOLUME_DIR))474        return475    source_dirs = config.dirs476    target_dirs = Directories.legacy_for_container()477    # default shared directories478    for name in Directories.default_bind_mounts:479        src = getattr(source_dirs, name, None)480        target = getattr(target_dirs, name, None)481        if src and target:482            container.volumes.add(VolumeBind(src, target))483    # shared tmp folder484    container.volumes.add(VolumeBind(source_dirs.tmp, target_dirs.tmp))485    # data_dir mounting and environment variables486    if source_dirs.data:487        container.volumes.add(VolumeBind(source_dirs.data, target_dirs.data))488        container.env_vars["DATA_DIR"] = target_dirs.data489@log_duration()490def prepare_host():491    """492    Prepare the host environment for running LocalStack, this should be called before start_infra_*.493    """494    if os.environ.get(constants.LOCALSTACK_INFRA_PROCESS) in constants.TRUE_STRINGS:495        return496    setup_logging()497    hooks.prepare_host.run()498def start_infra_in_docker():499    prepare_docker_start()500    container = LocalstackContainer()501    # create and prepare container502    configure_container(container)503    container.truncate_log()504    # printing the container log is the current way we're occupying the terminal505    log_printer = FileListener(container.logfile, print)506    log_printer.start()507    # Set up signal handler, to enable clean shutdown across different operating systems.508    #  There are subtle differences across operating systems and terminal emulators when it509    #  comes to handling of CTRL-C - in particular, Linux sends SIGINT to the parent process,510    #  whereas MacOS sends SIGINT to the process group, which can result in multiple SIGINT signals511    #  being received (e.g., when running the localstack CLI as part of an "npm run .." script).512    #  Hence, using a shutdown handler and synchronization event here, to avoid inconsistencies.513    def shutdown_handler(*args):514        with shutdown_event_lock:515            if shutdown_event.is_set():516                return517            shutdown_event.set()518        print("Shutting down...")519        server.shutdown()520        log_printer.close()521    shutdown_event = threading.Event()522    shutdown_event_lock = threading.RLock()523    signal.signal(signal.SIGINT, shutdown_handler)524    # start the Localstack container as a Server525    server = LocalstackContainerServer(container)526    try:527        server.start()528        server.join()529    except KeyboardInterrupt:530        print("ok, bye!")531        shutdown_handler()532def start_infra_in_docker_detached(console):533    """534    An alternative to start_infra_in_docker where the terminal is not blocked by the follow on the logfile.535    """536    console.log("preparing environment")537    try:538        prepare_docker_start()539    except ContainerExists as e:540        console.print(str(e))541        return542    # create and prepare container543    console.log("configuring container")544    container = LocalstackContainer()545    configure_container(container)546    container.truncate_log()547    # start the Localstack container as a Server548    console.log("starting container")549    server = LocalstackContainerServer(container)550    server.start()551    server.wait_is_container_running()552    console.log("detaching")...

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