127 lines
3.2 KiB
Python
127 lines
3.2 KiB
Python
"""
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Present observational weather data to Prometheus
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"""
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import json
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import time
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import os
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import requests
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from flask import Flask, Response
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app = Flask(__name__)
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def fetch_weather_data(location: int, apikey: str) -> dict:
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"""
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Fetch current data from the Met Office for the provided postcode
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"""
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obs_data = requests.get(
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f'http://api.weatherapi.com/v1/current.json?'
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f'key={apikey}&'
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f'q={location}&'
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f'aqi=yes'
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)
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return json.loads(obs_data.content)
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@app.route('/metrics')
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def metrics():
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"""
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Output Prometheus-style metrics
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"""
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apikey = os.environ.get('WEATHER_APIKEY')
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location = os.environ.get('WEATHER_LOCATION')
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latest_data = fetch_weather_data(location, apikey)['current']
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ret_data = [
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{
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'key': 'sensor_weather_outdoor_temperature_celsius',
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'labels': {
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'location': location,
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},
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'type': 'gauge',
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'value': float(latest_data['temp_c']),
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},
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{
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'key': 'sensor_weather_outdoor_humidity_percent',
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'labels': {
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'location': location,
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},
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'type': 'gauge',
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'value': float(latest_data['humidity']),
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},
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{
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'key': 'sensor_weather_outdoor_uv',
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'labels': {
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'location': location,
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},
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'type': 'gauge',
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'value': float(latest_data['uv']),
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},
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{
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'key': 'sensor_weather_outdoor_cloud_percent',
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'labels': {
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'location': location,
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},
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'type': 'gauge',
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'value': float(latest_data['cloud']),
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},
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{
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'key': 'sensor_weather_outdoor_precip',
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'labels': {
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'location': location,
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},
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'type': 'gauge',
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'value': float(latest_data['precip_mm']),
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},
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{
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'key': 'sensor_weather_outdoor_wind_speed',
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'labels': {
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'location': location,
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},
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'type': 'gauge',
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'value': float(latest_data['wind_kph']),
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},
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{
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'key': 'sensor_weather_outdoor_wind_direction',
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'labels': {
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'location': location,
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},
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'type': 'gauge',
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'value': float(latest_data['wind_degree']),
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},
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{
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'key': 'sensor_weather_outdoor_temp_feel_c',
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'labels': {
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'location': location,
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},
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'type': 'gauge',
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'value': float(latest_data['feelslike_c']),
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},
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]
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ret_strs = list()
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for item in ret_data:
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ret_strs.append(f'# HELP {item["key"]} Weather metric')
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ret_strs.append(f'# TYPE {item["key"]} {item["type"]}')
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ret_strs.append(
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item["key"]
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+ '{'
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+ " ".join([f'{key}="{val}"' for key, val in item["labels"].items()])
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+ '} '
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+ str(item["value"])
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)
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resp = Response('\n'.join(ret_strs))
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resp.headers['Content-type'] = 'text/plain'
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return resp
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if __name__ == '__main__':
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app.run(host='0.0.0.0')
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