exporting prometheus metrics as the /metrics route with Flask?

[JI Ioannidis]

Here is a typical pared-down Flask application:

def main(args, options):

  reload(sys)

  sys.setdefaultencoding('utf-8')

  flask_app.debug = True

  flask_app.run(debug=True, host='0.0.0.0', port=9080, threaded=True,

                use_reloader=False)

 

@flask_app.route('/test', methods=['POST', 'GET'])

def view_test():

  return repr(request) + repr(request.args) + repr(request.form)

How do export my prometheus metrics as a /metrics route? 

@flask_app.route('/metrics', methods=['GET'])

def view_metrics():

  return # what goes here

[Stuart Clark]

> Here is a typical pared-down Flask application:
>

> *def main(args, options):*
> * reload(sys)*
> * sys.setdefaultencoding('utf-8')*
> * flask_app.debug = True*
> * flask_app.run(debug=True, host='0.0.0.0', port=9080, threaded=True,*
> * use_reloader=False)*
>
>
>
> *@flask_app.route('/test', methods=['POST', 'GET'])*
> *def view_test():*
> * return repr(request) + repr(request.args) + repr(request.form)*

>
>
> How do export my prometheus metrics as a /metrics route?
>

> *@flask_app.route('/metrics', methods=['GET'])*
> *def view_metrics():*
> * return # what goes here*
>

from prometheus_client import generate_latest, REGISTRY, Gauge, Counter

def view_metrics():
return generate_latest(REGISTRY)




--
Stuart Clark