46 lines
1.4 KiB
Python
Executable File
46 lines
1.4 KiB
Python
Executable File
#!/usr/bin/env python
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from prometheus_client import start_http_server, Gauge
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from yoctopuce.yocto_api import YAPI, YRefParam
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from yoctopuce.yocto_temperature import YTemperature
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import sys
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HTTP_PORT = 9400
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INTERVAL = 5000
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YOCTO_SENSOR_TEMPERATURE = Gauge(
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'yocto_sensor_temperature',
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'Yocto-Temperature sensor temperature value in Celcius'
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)
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if __name__ == '__main__':
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# Setup the API to use local USB devices
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errmsg = YRefParam()
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if YAPI.RegisterHub("usb", errmsg) != YAPI.SUCCESS:
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sys.exit("Could not initialize USB: " + errmsg.value)
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# Use first YoctoTemerature sensor found.
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sensor = YTemperature.FirstTemperature()
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if sensor is None:
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sys.exit('Did not find any YoctoTemerature sensor.')
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elif sensor.isOnline():
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print("YoctoTemerature sensor is ONLINE.")
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else:
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sys.exit("I found a sensor but it seems unavailable for some reason. Exiting.")
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# Serve metrics over HTTP.
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print("Starting prometheus-yoctotemp-exporter on port",
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"{}...".format(HTTP_PORT), end='')
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start_http_server(HTTP_PORT)
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print(" OK.")
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while sensor.isOnline():
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YOCTO_SENSOR_TEMPERATURE.set(sensor.get_currentValue())
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YAPI.Sleep(INTERVAL)
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sys.stderr.write("YoctoTemperature sensor disappeared for some reason.")
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# Cleanup.
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YAPI.FreeAPI()
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sys.exit("Cleaned up - Now exiting.")
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