70 lines
2.2 KiB
Python
70 lines
2.2 KiB
Python
import json
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import logging
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import re
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from queue import Queue
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import paho.mqtt.client as mqtt
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LOG = logging.getLogger('MQTTQueue')
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class MQTTQueue:
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def __init__(self, config, queue):
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self.config = config
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self.client = mqtt.Client()
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self.queue = queue
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self.client.on_connect = self.on_connect
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self.client.on_disconnect = self.on_disconnect
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self.client.on_message = self.on_mqtt_message
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def start(self):
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if self.config.mqtt.user and self.config.mqtt.password:
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self.client.username_pw_set(
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self.config.mqtt.user, self.config.mqtt.password
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)
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self.client.connect(self.config.mqtt.host, 1883, 60)
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self.client.loop_start()
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def stop(self):
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self.client.loop_stop()
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self.client.disconnect()
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def on_connect(self, client, userdata, flags, rc):
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LOG.info(f'Connected to {self.config.mqtt.host} with code {rc}')
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self.client.subscribe(self.config.mqtt.topic)
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LOG.info(f'Subscribed')
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def on_disconnect(self, client, userdata, rc):
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LOG.warning(f'Disconnected from {self.config.mqtt.host} with code {rc}')
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def on_mqtt_message(self, client, userdata, msg):
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try:
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data = json.loads(msg.payload.decode('utf-8'))
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text = re.sub(r'\<[a-z\/]+\>', '', data['msg'])
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add_to_queue = True
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if self.config.alerts.filters:
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add_to_queue = False
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for f in self.config.alerts.filters:
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if re.search(f, data['component'], re.IGNORECASE):
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add_to_queue = True
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break # no point in searching further
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if add_to_queue:
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self.queue.put(
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(
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data['level'].lower(),
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data['component'],
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text,
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)
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)
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LOG.info(f'Put queue item: {data["level"].lower()} {data["component"]} : {text}')
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else:
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LOG.info(f'Ignoring message for {data["component"]} because it was filtered')
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except Exception as e:
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LOG.exception(msg.payload)
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