kopia lustrzana https://github.com/Yakifo/amqtt
43 wiersze
1.4 KiB
Python
43 wiersze
1.4 KiB
Python
import logging
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import asyncio
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from hbmqtt.client import MQTTClient, ClientException
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from hbmqtt.mqtt.constants import QOS_1, QOS_2
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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 '$SYS/broker/uptime' topic and displays the first ten values returned
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# by the broker.
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#
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logger = logging.getLogger(__name__)
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@asyncio.coroutine
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def uptime_coro():
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C = MQTTClient()
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yield from C.connect('mqtt://test.mosquitto.org/')
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# Subscribe to '$SYS/broker/uptime' with QOS=1
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yield from C.subscribe([
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('$SYS/broker/uptime', QOS_1),
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('$SYS/broker/load/#', QOS_2),
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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 = yield from C.deliver_message()
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packet = message.publish_packet
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print("%d: %s => %s" % (i, packet.variable_header.topic_name, str(packet.payload.data)))
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yield from C.unsubscribe(['$SYS/broker/uptime', '$SYS/broker/load/#'])
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logger.info("UnSubscribed")
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yield from 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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