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Location: ChaosStuff/mqtt2prometheus/mqtt2prometheus.py
d2da7d83904c
4.5 KiB
text/x-python
Use try clause around setting values
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import time
import paho.mqtt.client as mqtt
from prometheus_client import start_http_server, Gauge
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"],
)
TOPIC_TO_HANDLER = {
"availability/#": handle_availability,
"space/status": handle_space_status,
"space/member_count": handle_member_count,
"sensors/people_now_present": handle_people_now_present,
"sensors/temperature/#": handle_temperature,
"sensors/humidity/#": handle_humidity,
"sensors/barometer/#": handle_barometer,
"sensors/power_consumption/#": handle_power_consumption,
"sensors/co2_emission/#": handle_co2_emission,
"sensors/energy_consumption/#": handle_energy_consumption,
}
def on_connect(client, userdata, flags, rc):
client.publish("availability/mqtt2prometheus", "online", 2, True)
for topic, handler in TOPIC_TO_HANDLER:
client.message_callback_add(topic, handler)
for topic in ["availability/#", "space/status", "space/member_count", "sensors/#"]:
client.subscribe(topic)
def handle_people_now_present(client, userdata, msg):
people_now_present.set(json.loads(msg.payload))
def handle_space_status(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):
count = json.loads(msg.payload)
member_count.labels(count["name"]).set(count["value"])
def handle_availability(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_temperature(client, userdata, msg):
t = msg.topic.split("/")
location = "-".join(t[2:])
try:
temperature.labels(location).set(float(msg.payload))
except:
pass
def handle_humidity(client, userdata, msg):
t = msg.topic.split("/")
location = "-".join(t[2:])
try:
humidity.labels(location).set(float(msg.payload))
except:
pass
def handle_barometer(client, userdata, msg):
t = msg.topic.split("/")
location = "-".join(t[2:])
try:
barometer.labels(location).set(float(msg.payload))
except:
pass
def handle_power_consumption(client, userdata, msg):
t = msg.topic.split("/")
location = "-".join(t[2:])
try:
power_consumption.labels(location).set(float(msg.payload))
except:
pass
def handle_co2_emission(client, userdata, msg):
t = msg.topic.split("/")
location = "-".join(t[2:])
try:
co2_emission.labels(location).set(float(msg.payload))
except:
pass
def handle_energy_consumption(client, userdata, msg):
t = msg.topic.split("/")
location = "-".join(t[2:])
try:
energy_consumption.labels(location).set(float(msg.payload))
except:
pass
def main():
client = mqtt.Client("mqtt2prometheus")
client.on_connect = on_connect
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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