ChaosStuff/mqtt2prometheus Changeset - 65eb8f0a25d4 · Chaos Computer Club Lëtzebuerg Projects

Changeset - 65eb8f0a25d4

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Dennis Fink - 4 years ago 2021-07-07 20:52:43
dennis.fink@c3l.lu

Use a custom class

1 file changed with 20 insertions and 24 deletions:

mqtt2prometheus.py

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mqtt2prometheus.py

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 import json
 import time
 import paho.mqtt.client as mqtt
 from prometheus_client import start_http_server, Gauge
 from prometheus_client import Gauge, start_http_server
 CONFIG = json.load(open("/etc/mqtt2prometheus.json", mode="r", encoding="utf-8"))
 people_now_present = Gauge(
     "people_now_present", "People currently present in the space"
+)
 space_state = Gauge("space_state", "The current space state")
 space_lastchange = Gauge(
     "space_lastchange", "The lastchange timestamp of the current space state"
+)
 member_count = Gauge(
     "member_count", "The current count of members", labelnames=["name"]
+)
 availability = Gauge(
     "availability",
     "The availability status of different MQTT clients",
     labelnames=["clientname"],
+)
 temperature = Gauge(
     "temperature_celsius", "The current temperature", labelnames=["location"]
+)
 humidity = Gauge("humidity_percent", "The current humidity", labelnames=["location"])
 barometer = Gauge(
     "barometer_hectopascal", "The current air pressure", labelnames=["location"]
+)
 power_consumption = Gauge(
     "power_consumption_watt", "The current power used", labelnames=["location"]
+)
 co2_emission = Gauge(
     "co2_emission_kilogramm", "The CO2 emission in kilogramm", labelnames=["location"]
+)
 energy_consumption = Gauge(
     "energy_consumption_kilowatthour",
     "The energy consumption in kilowatthour",
     labelnames=["location"],
+)
 def on_connect(client, userdata, flags, rc):
     client.publish("availability/mqtt2prometheus", "online", 2, True)
 class Mqtt2Prometheus(mqtt.Client):
     def on_connect(self, client, userdata, flags, rc):
         self.publish("availability/mqtt2prometheus", "online", 2, True)
     topics_handler = {
         "availability/#": handle_availability,
         "space/status": handle_space_status,
         "space/member_count": handle_member_count,
         "sensors/people_now_present": handle_people_now_present,
         "sensors/#": handle_sensor,
             "availability/#": self.handle_availability,
             "space/status": self.handle_space_status,
             "space/member_count": self.handle_member_count,
             "sensors/people_now_present": self.handle_people_now_present,
             "sensors/#": self.handle_sensor,
+    }
     for topic, handler in topics_handler.items():
         client.message_callback_add(topic, handler)
         client.subscribe(topic)
             self.message_callback_add(topic, handler)
             self.subscribe(topic)
 def handle_people_now_present(client, userdata, msg):
     def handle_people_now_present(self, client, userdata, msg):
     people_now_present.set(json.loads(msg.payload))
 def handle_space_status(client, userdata, msg):
     def handle_space_status(self, client, userdata, msg):
     state = json.loads(msg.payload)
     space_state.set(int(state["open"]))
     space_lastchange.set(state["lastchange"])
 def handle_member_count(client, userdata, msg):
     def handle_member_count(self, client, userdata, msg):
     count = json.loads(msg.payload)
     member_count.labels(count["name"]).set(count["value"])
 def handle_availability(client, userdata, msg):
     def handle_availability(self, client, userdata, msg):
     t = msg.topic.split("/")
     if len(t) == 2:
         c = t[-1]
     else:
         c = "_".join(t[1:])
     v = 1 if msg.payload == b"online" else 0
     availability.labels(c).set(v)
     def handle_sensor(self, client, userdata, msg):
         t = msg.topic.split("/")
 def handle_sensor(client, userdata, msg):
     t = msg.topic.split("/")
     location = "-".join(t[2:])
     if t[1] == "people_now_present":
         return
     metric = globals().get(t[1], None)
     if metric is not None:
         try:
                 location = "-".join(t[2:])
             metric.labels(location).set(float(msg.payload))
         except:
             pass
 def main():
     client = mqtt.Client("mqtt2prometheus")
     client.on_connect = on_connect
     client = Mqtt2Prometheus("mqtt2prometheus")
     client.username_pw_set(CONFIG["mqtt"]["username"], CONFIG["mqtt"]["password"])
     client.will_set("availability/mqtt2prometheus", "offline", 2, True)
     client.connect(CONFIG["mqtt"]["host"])
     client.loop_start()
     start_http_server(CONFIG["prometheus"]["port"])
     while True:
         time.sleep(1)
 if __name__ == "__main__":
     main()

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