How do I call the function every time before the metrics are given?

[vrublevskyyy]

Hi! I would like to call my function and after it updates the metrics, fasten it - how best to do this?

What I would like:

-- When open localhost:8000/metrics

• Call my_func (update Gauge)
• Opening /metrics with new values

[vrublevskyyy]

Found solution:

#!/usr/bin/env python
from flask import Flask, Response
from prometheus_client import Gauge, generate_latest, CONTENT_TYPE_LATEST

app = Flask('kayenta-tester')
blabla= Gauge('blabla_execution_time', 'blabla_desc',[])

@app.route('/metrics')
def hello():
    blabla.set(my_func())
    return Response(generate_latest(), mimetype=CONTENT_TYPE_LATEST)

app.run(host = '0.0.0.0', port = 8080)