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How to use publish_error method in localstack

Best Python code snippet using localstack_python

main.py

Source:main.py

...102            except Exception as err:103                # Publish error to IPC and MQTT on default error topic. 104                protocol = 'ipc_mqtt'105                err_msg = 'Exception in main process loop: {}'.format(err)106                self.publish_error(protocol, err_msg)107                108            finally:109                time.sleep(10)110    def default_message_handler(self, protocol, topic, message_id, status, route, message):111        '''112            This default message handler function is a route of last resort to handle 113            PubSub messages received by the SDK with a route value that does not 114            match any functions in the registered message_handler classes.115            In this example, we generate and publish an error message to both IPC and MQTT.116            You could instead handle this locally or just sliently discard messages here depending 117            on the application.118        '''119        # Publish error to IPC and MQTT on default error topic, will log locally as an error as well. 120        err_msg = 'Received message to unknown route / message handler: {} - message: {}'.format(route, message)121        self.publish_error(protocol, err_msg)122if __name__ == "__main__":123    try:124        # Parse config from component recipe into sys.argv[1] 125        ggv2_component_config = sys.argv[1]126        ggv2_component_config = json.loads(ggv2_component_config)127        128        log.info('GG PubSub SDK Config: {}'.format(ggv2_component_config))129        # Create the component class with the parsed Greengrass recipe config.130        ggv2_component = MyAwsGreengrassV2Component(ggv2_component_config)131        132        # Start the main process loop to hold up the process.133        ggv2_component.service_loop()134    except Exception as err:135        log.error('Exception occurred initialising component. ERROR MESSAGE: {}'.format(err))

test_gcs_pubsub.py

Source:test_gcs_pubsub.py

...19    subscriber.subscribe()20    publisher = GcsPublisher(address=gcs_server_addr)21    err1 = ErrorTableData(error_message="test error message 1")22    err2 = ErrorTableData(error_message="test error message 2")23    publisher.publish_error(b"aaa_id", err1)24    publisher.publish_error(b"bbb_id", err2)25    assert subscriber.poll() == (b"aaa_id", err1)26    assert subscriber.poll() == (b"bbb_id", err2)27    subscriber.close()28@pytest.mark.asyncio29@pytest.mark.parametrize(30    "ray_start_regular", [{31        "_system_config": {32            "gcs_grpc_based_pubsub": True33        }34    }],35    indirect=True)36async def test_aio_publish_and_subscribe_error_info(ray_start_regular):37    address_info = ray_start_regular38    gcs_server_addr = address_info["gcs_address"]39    subscriber = GcsAioErrorSubscriber(address=gcs_server_addr)40    await subscriber.subscribe()41    publisher = GcsAioPublisher(address=gcs_server_addr)42    err1 = ErrorTableData(error_message="test error message 1")43    err2 = ErrorTableData(error_message="test error message 2")44    await publisher.publish_error(b"aaa_id", err1)45    await publisher.publish_error(b"bbb_id", err2)46    assert await subscriber.poll() == (b"aaa_id", err1)47    assert await subscriber.poll() == (b"bbb_id", err2)48    await subscriber.close()49@pytest.mark.parametrize(50    "ray_start_regular", [{51        "_system_config": {52            "gcs_grpc_based_pubsub": True53        }54    }],55    indirect=True)56def test_publish_and_subscribe_logs(ray_start_regular):57    address_info = ray_start_regular58    gcs_server_addr = address_info["gcs_address"]59    subscriber = GcsLogSubscriber(address=gcs_server_addr)60    subscriber.subscribe()61    publisher = GcsPublisher(address=gcs_server_addr)62    log_batch = {63        "ip": "127.0.0.1",64        "pid": 1234,65        "job": "0001",66        "is_err": False,67        "lines": ["line 1", "line 2"],68        "actor_name": "test actor",69        "task_name": "test task",70    }71    publisher.publish_logs(log_batch)72    # PID is treated as string.73    log_batch["pid"] = "1234"74    assert subscriber.poll() == log_batch75    subscriber.close()76@pytest.mark.asyncio77@pytest.mark.parametrize(78    "ray_start_regular", [{79        "_system_config": {80            "gcs_grpc_based_pubsub": True81        }82    }],83    indirect=True)84async def test_aio_publish_and_subscribe_logs(ray_start_regular):85    address_info = ray_start_regular86    gcs_server_addr = address_info["gcs_address"]87    subscriber = GcsAioLogSubscriber(address=gcs_server_addr)88    await subscriber.subscribe()89    publisher = GcsAioPublisher(address=gcs_server_addr)90    log_batch = {91        "ip": "127.0.0.1",92        "pid": "gcs",93        "job": "0001",94        "is_err": False,95        "lines": ["line 1", "line 2"],96        "actor_name": "test actor",97        "task_name": "test task",98    }99    await publisher.publish_logs(log_batch)100    assert await subscriber.poll() == log_batch101    await subscriber.close()102@pytest.mark.parametrize(103    "ray_start_regular", [{104        "_system_config": {105            "gcs_grpc_based_pubsub": True106        }107    }],108    indirect=True)109def test_publish_and_subscribe_function_keys(ray_start_regular):110    address_info = ray_start_regular111    gcs_server_addr = address_info["gcs_address"]112    subscriber = GcsFunctionKeySubscriber(address=gcs_server_addr)113    subscriber.subscribe()114    publisher = GcsPublisher(address=gcs_server_addr)115    publisher.publish_function_key(b"111")116    publisher.publish_function_key(b"222")117    assert subscriber.poll() == b"111"118    assert subscriber.poll() == b"222"119    subscriber.close()120@pytest.mark.asyncio121@pytest.mark.parametrize(122    "ray_start_regular", [{123        "_system_config": {124            "gcs_grpc_based_pubsub": True125        }126    }],127    indirect=True)128async def test_aio_publish_and_subscribe_resource_usage(ray_start_regular):129    address_info = ray_start_regular130    gcs_server_addr = address_info["gcs_address"]131    subscriber = GcsAioResourceUsageSubscriber(address=gcs_server_addr)132    await subscriber.subscribe()133    publisher = GcsAioPublisher(address=gcs_server_addr)134    await publisher.publish_resource_usage("aaa_id", "{\"cpu\": 1}")135    await publisher.publish_resource_usage("bbb_id", "{\"cpu\": 2}")136    assert await subscriber.poll() == ("aaa_id", "{\"cpu\": 1}")137    assert await subscriber.poll() == ("bbb_id", "{\"cpu\": 2}")138    await subscriber.close()139@pytest.mark.parametrize(140    "ray_start_regular", [{141        "_system_config": {142            "gcs_grpc_based_pubsub": True143        }144    }],145    indirect=True)146def test_two_subscribers(ray_start_regular):147    """Tests concurrently subscribing to two channels work."""148    address_info = ray_start_regular149    gcs_server_addr = address_info["gcs_address"]150    num_messages = 100151    errors = []152    error_subscriber = GcsErrorSubscriber(address=gcs_server_addr)153    # Make sure subscription is registered before publishing starts.154    error_subscriber.subscribe()155    def receive_errors():156        while len(errors) < num_messages:157            _, msg = error_subscriber.poll()158            errors.append(msg)159    t1 = threading.Thread(target=receive_errors)160    t1.start()161    logs = []162    log_subscriber = GcsLogSubscriber(address=gcs_server_addr)163    # Make sure subscription is registered before publishing starts.164    log_subscriber.subscribe()165    def receive_logs():166        while len(logs) < num_messages:167            log_batch = log_subscriber.poll()168            logs.append(log_batch)169    t2 = threading.Thread(target=receive_logs)170    t2.start()171    publisher = GcsPublisher(address=gcs_server_addr)172    for i in range(0, num_messages):173        publisher.publish_error(174            b"msg_id", ErrorTableData(error_message=f"error {i}"))175        publisher.publish_logs({176            "ip": "127.0.0.1",177            "pid": "gcs",178            "job": "0001",179            "is_err": False,180            "lines": [f"log {i}"],181            "actor_name": "test actor",182            "task_name": "test task",183        })184    t1.join(timeout=10)185    assert len(errors) == num_messages, str(errors)186    assert not t1.is_alive(), str(errors)187    t2.join(timeout=10)...

CtrlNode.py

Source:CtrlNode.py

...32##33def start_scan():34    """ Starts the search for the cup """35    if current_state not in ("IDLE", "NO_CUP"):36        publish_error("Cannot initiate room scan from state '%s'" % current_state)37    else:38        change_state("ROOM_SCAN")39        room_scanner_publisher.publish(RoomScannerCommand(None, "start", True))40def start_approach(room_scanner_result):41    """42    Start approaching the cup. Above a certain distance, we do this by going half the distance and re-adjusting43    the direction. Below that distance, we go straight.44    :return: None45    """46    global walk_publisher47    angle = room_scanner_result.angle48    distance = room_scanner_result.distance49    if distance > STRAIGHT_WALK_MIN_DIST:50        distance /= 251        change_state("APPROACHING_CUP")52    else:53        change_state("ARRIVING_AT_CUP")54    walk_publisher.publish(WalkCommand(None, angle, distance))55def start_bearing_readjustment():56    """57    Finished a leg on our way to the cup. Now re-adjust the robot's bearing to still have the cup58    straight ahead.59    """60    change_state("READJUSTING_BEARING")61    room_scanner_publisher.publish(RoomScannerCommand(None, "start", False))62def stop():63    """64    Stop the robot from doing the task, in an orderly manner.65    """66    global current_state67    if (current_state == "ROOM_SCAN"):68        room_scanner_publisher.publish(RoomScannerCommand(None, "stop", False))69    # TODO send stop message to the proper node, for other states.70    change_state("IDLE")71def abort():72    """73    Admit that while we did recognize a cup, we couldn't get to it.74    """75    stop()76    change_state("MISSION_FAIL")77##78# Callbacks79##80def scan_callback(room_scanner_result):81    if current_state == "ROOM_SCAN":82        if room_scanner_result.cost > COST_THRESHOLD:83            change_state("NO_CUP")84        else:85            start_approach(room_scanner_result)86    elif current_state == "READJUSTING_BEARING":87        if room_scanner_result.cost > COST_THRESHOLD:88            publish_error("Lost track of cup")89            abort()90        else:91            start_approach(room_scanner_result)92def walk_callback(walk_result):93    if current_state == "APPROACHING_CUP":94        if walk_result.result:95            start_bearing_readjustment()96        else:97            publish_error("Walk module failed to advance.")98            abort()99    elif current_state == "ARRIVING_AT_CUP":100        change_state("AT_CUP")  # Success!101    else:102        publish_error("Got a walk result while not walking. Weird. Ignoring.")103def command_callback(command_msg):104    """105    Got a command from the Cli106    """107    global room_scanner_publisher108    command = command_msg.command109    rospy.loginfo("command %s", command)110    if command == "scan":111        start_scan()112    elif command == "stop":113        stop()114    else:115        publish_error("bad command: '%s'" % command)116##117# Internal methods118##119def change_state(new_state):120    """121    Changes the state of the node, and publishes it over the topic.122    :param new_state:   new stat the robot is in123    :return: None124    """125    global current_state126    current_state = new_state127    rospy.loginfo("current state: %s" % current_state)128    status_publisher.publish(CtrlStatus(None, "state_change", current_state))129def publish_error(message):130    """131    publishes an error message to the status topic132    """133    status_publisher.publish(CtrlStatus(None, "error", message))134if __name__ == '__main__':135    try:136        rospy.loginfo("Starting the controller node")137        rospy.init_node("CupinatorCtrl", anonymous=False)138        status_publisher = rospy.Publisher("/cupinator/ctrl/status", CtrlStatus, queue_size=10)139        rospy.Subscriber("/cupinator/ctrl/command", CtrlCommand, command_callback)140        walk_publisher = rospy.Publisher("/cupinator/walk/command", WalkCommand, queue_size=5)141        rospy.Subscriber("/cupinator/room_scanner/result", RoomScannerResult, scan_callback)142        room_scanner_publisher = rospy.Publisher("/cupinator/room_scanner/command", RoomScannerCommand, queue_size=5)143        rospy.Subscriber("/cupinator/walk/result", WalkResult, walk_callback)...

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