Inspired by an old blog post by Oliver Smith I wrote my own new python-based notification script for MQTT messages. This is simple than the one which is using the DBUS directly.
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#!/usr/bin/env python # # Copyright (c) 2013 Fabian Affolter <fabian at affolter-engineering.ch> # # Released under the MIT license. # from gi.repository import Notify import mosquitto broker = '127.0.0.1' port = 1883 topic = 'test/#' qos = 0 # Assign a callback for connect and disconnect def on_connect(mosq, obj, rc): if rc == 0: print 'Connected successfully to %s:%s' % (broker, port) def on_disconnect(mosq, obj, rc): print 'Not able to connect to %s:%s' % (broker, port) # Send a notification after a new message has arrived def on_message(mosq, obj, msg): message = msg.payload + ' \n(Topic: ' + msg.topic + ' - QoS: ' + str(msg.qos) + ')' Notify.init('MQTT message') n = Notify.Notification.new( 'MQTT message:', message, '/usr/share/icons/gnome/32x32/places/network-server.png') n.show() def main(): # Setup the MQTT client mqttclient = mosquitto.Mosquitto('notify') mqttclient.connect(broker, port, 60) # Callbacks mqttclient.on_connect = on_connect mqttclient.on_message = on_message mqttclient.on_disconnect = on_disconnect # Subscribe to topic 'test' mqttclient.subscribe(topic, qos) # Loop the client forever while mqttclient.loop() == 0: pass if __name__ == '__main__': main() |
The icon has no function…it just looks nice.
mqtt-notify
I just wrote a tiny C application, mqtt-exec, to execute commands on mqtt messages.
With my app and notify-send you can do it with:
mqtt-exec -h $broker -t $topic -- notifiy-send -i network-server "MQTT message:"