61 lines
1.6 KiB
Python
61 lines
1.6 KiB
Python
from prometheus_client import start_http_server, Summary, Gauge
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import paho.mqtt.publish as publish
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import paho.mqtt.client as mqtt
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import random
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import time
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from node_api import NodeAPI
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client_id = "exporter"
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topics = [
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("$SYS/broker/clients/connected", 0),
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("$CONNECTED/#", 0)
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]
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node_api = NodeAPI()
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MQTT_CONNECTED = Gauge('mqtt_node_connected', 'MQTT node connection status', ['node', 'description'])
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MQTT_BROKER_CLIENTS = Gauge('mqtt_broker_clients', 'MQTT broker clients connected')
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def on_connect(client, userdata, flags, rc):
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print("Connected with result code " + str(rc))
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client.subscribe(topics)
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if rc==0:
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client.connected_flag=True
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client.publish("$CONNECTED/"+client_id, 1, retain=True)
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else:
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client.bad_connection_flag=True
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#def on_disconnect(client, userdata, rc):
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# client.publish(connection_topic,0,retain=True)
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def on_message(client, userdata, msg):
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topic = msg.topic.split('/')
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if topic[0] == "$CONNECTED":
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MQTT_CONNECTED.labels(topic[1], node_api.get(topic[1])).set(int(msg.payload))
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if msg.topic == "$SYS/broker/clients/connected":
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MQTT_BROKER_CLIENTS.set(int(msg.payload))
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print(msg.topic, int(msg.payload))
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client = mqtt.Client(client_id)
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client.on_connect = on_connect
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#client.on_disconnect = on_disconnect
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client.on_message = on_message
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client.will_set("$CONNECTED/"+client_id, 0, qos=0, retain=True)
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client.connect('localhost')
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client.loop_start()
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if __name__ == '__main__':
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# Start up the server to expose the metrics.
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start_http_server(8000)
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while True:
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time.sleep(1)
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