kopia lustrzana https://github.com/Yakifo/amqtt
51 wiersze
1.6 KiB
Python
51 wiersze
1.6 KiB
Python
import logging
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import asyncio
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from amqtt.client import MQTTClient, ClientException
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from amqtt.mqtt.constants import QOS_1
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#
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# This sample shows how to subscbribe a topic and receive data from incoming messages
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# It subscribes to '$SYS/broker/uptime' topic and displays the first ten values returned
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# by the broker.
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#
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logger = logging.getLogger(__name__)
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async def uptime_coro():
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C = MQTTClient()
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await C.connect("mqtt://test:test@0.0.0.0:1883")
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# await C.connect('mqtt://0.0.0.0:1883')
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# Subscribe to '$SYS/broker/uptime' with QOS=1
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await C.subscribe(
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[
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("data/memes", QOS_1), # Topic allowed
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("data/classified", QOS_1), # Topic forbidden
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("repositories/amqtt/master", QOS_1), # Topic allowed
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("repositories/amqtt/devel", QOS_1), # Topic forbidden
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("calendar/amqtt/releases", QOS_1), # Topic allowed
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]
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)
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logger.info("Subscribed")
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try:
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for i in range(1, 100):
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message = await C.deliver_message()
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packet = message.publish_packet
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print(
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"%d: %s => %s"
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% (i, packet.variable_header.topic_name, str(packet.payload.data))
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)
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await C.unsubscribe(["$SYS/broker/uptime", "$SYS/broker/load/#"])
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logger.info("UnSubscribed")
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await C.disconnect()
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except ClientException as ce:
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logger.error("Client exception: %s" % ce)
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if __name__ == "__main__":
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formatter = "[%(asctime)s] {%(filename)s:%(lineno)d} %(levelname)s - %(message)s"
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logging.basicConfig(level=logging.INFO, format=formatter)
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asyncio.get_event_loop().run_until_complete(uptime_coro())
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