def publish_async(topic: str, message: bytes,
qos: QOS) -> concurrent.futures.Future:
request = PublishToIoTCoreRequest()
request.topic_name = topic
request.payload = message
request.qos = qos
operation = ipc_client.new_publish_to_iot_core()
operation.activate(request)
future = operation.get_response()
return future
def publish_results_to_iot_core (message):
# Publish highest confidence result to AWS IoT Core
global ipc_client
request = PublishToIoTCoreRequest()
request.topic_name = inference_result_topic
request.payload = bytes(json.dumps(message), "utf-8")
request.qos = QOS.AT_LEAST_ONCE
operation = ipc_client.new_publish_to_iot_core()
operation.activate(request)
future = operation.get_response()
future.result(10)
def publishMessage_mqtt(mqtt_topic, payload):
try:
message = json.dumps(payload)
qos = QOS.AT_LEAST_ONCE
request = PublishToIoTCoreRequest()
request.topic_name = mqtt_topic
request.payload = bytes(message, "utf-8")
request.qos = qos
operation = ipc_client.new_publish_to_iot_core()
operation.activate(request)
future = operation.get_response()
future.result(TIMEOUT)
except Exception as e:
logging.info(
"Publish MQTT Message Error : {0}, topic : {1}, payload : {2}".
format(str(e), mqtt_topic, message))
ipc_client = client.GreengrassCoreIPCClient(connection)
opcUAclient = Client("opc.tcp://localhost:4840/freeopcua/server/")
try:
opcUAclient.connect()
val = opcUAclient.get_node("ns=2;i=2")
while True:
dataValue = val.get_data_value().Value
value = float(dataValue.Value)
topic = "OPCUAServer1/test/myVariable"
qos = QOS.AT_LEAST_ONCE
request = PublishToIoTCoreRequest()
request.topic_name = topic
request.payload = bytes('{"value": "' + str(value) + '"}', "utf-8")
request.qos = qos
operation = ipc_client.new_publish_to_iot_core()
operation.activate(request)
future = operation.get_response()
future.result(TIMEOUT)
variant = Variant(double_value=value)
siteWiseTopic = "/testvariable/opcua"
try:
print("Appending IoTSiteWiseEntry to stream")
streamClient.append_message(
stream_name,
Util.validate_and_serialize_to_json_bytes(