Demo app for showing off the Prometheus monitoring server

myapp.py

#!/usr/bin/env python3

import prometheus_client as prom
import random
import time
import sys

T = float(sys.argv[1]) if len(sys.argv) > 1 else 0.1

REQUEST_TIME = prom.Summary('processing_time_seconds', 'Time spent processing request')

@REQUEST_TIME.time()
def do_something():
    t = T + random.random()/10
    print(t)
    time.sleep(t)

if __name__ == '__main__':
    prom.start_http_server(8047)

    while True:
        do_something()

requirements.txt

prometheus-client