minimal prometheus instrumentation of a bottle application

prometheus_bottle

from bottle import route, run, template, Bottle
from prometheus_client import multiprocess
from prometheus_client import generate_latest, REGISTRY, Gauge, Counter

application = Bottle()

IN_PROGRESS = Gauge("inprogress_requests", "help")
REQUESTS = Counter('http_requests_total', 'Description of counter', ['method', 'endpoint'])


@IN_PROGRESS.track_inprogress()
@application.route('/hello/<name>')
def index(name):
    REQUESTS.labels(method='GET', endpoint="hello").inc()
    return template('<b>Hello {{name}}</b>!', name=name)

@IN_PROGRESS.track_inprogress()
@application.route('/metrics')
def metrics():
    return generate_latest(REGISTRY)

application.run()