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Handle backend stop/disconnection on MQTT

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This commit is contained in:
Fabio Manganiello 2019-01-18 04:10:27 +01:00
parent 1f4efbb427
commit e1920700ec
1 changed files with 16 additions and 11 deletions
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27
platypush/backend/mqtt.py
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@ -2,9 +2,6 @@ import json
import os import os
import threading import threading
import paho.mqtt.client as mqtt
import paho.mqtt.publish as publisher
from platypush.backend import Backend from platypush.backend import Backend
from platypush.context import get_plugin from platypush.context import get_plugin
from platypush.message import Message from platypush.message import Message
@ -65,6 +62,7 @@ class MqttBackend(Backend):
self.topic = '{}/{}'.format(topic, self.device_id) self.topic = '{}/{}'.format(topic, self.device_id)
self.username = username self.username = username
self.password = password self.password = password
self._client = None
self.tls_cafile = os.path.abspath(os.path.expanduser(tls_cafile)) \ self.tls_cafile = os.path.abspath(os.path.expanduser(tls_cafile)) \
if tls_cafile else None if tls_cafile else None
@ -127,25 +125,32 @@ class MqttBackend(Backend):
name='MQTTProcessor', name='MQTTProcessor',
args=(msg,)).start() args=(msg,)).start()
import paho.mqtt.client as mqtt
super().run() super().run()
client = mqtt.Client() self._client = mqtt.Client()
client.on_connect = on_connect self._client.on_connect = on_connect
client.on_message = on_message self._client.on_message = on_message
if self.username and self.password: if self.username and self.password:
client.username_pw_set(self.username, self.password) self._client.username_pw_set(self.username, self.password)
if self.tls_cafile: if self.tls_cafile:
client.tls_set(ca_certs=self.tls_cafile, certfile=self.tls_certfile, self._client.tls_set(ca_certs=self.tls_cafile, certfile=self.tls_certfile,
keyfile=self.tls_keyfile, tls_version=self.tls_version, keyfile=self.tls_keyfile, tls_version=self.tls_version,
ciphers=self.tls_ciphers) ciphers=self.tls_ciphers)
client.connect(self.host, self.port, 60) self._client.connect(self.host, self.port, 60)
self.logger.info('Initialized MQTT backend on host {}:{}, topic {}'. self.logger.info('Initialized MQTT backend on host {}:{}, topic {}'.
format(self.host, self.port, self.topic)) format(self.host, self.port, self.topic))
client.loop_forever() self._client.loop_forever()
def stop(self):
self.logger.info('Received STOP event on MqttBackend')
if self._client:
self._client.disconnect()
self._client.loop_stop()
self._client = None
# vim:sw=4:ts=4:et: # vim:sw=4:ts=4:et: