quart-prometheus-logger

A Prometheus logger extension for Quart.

This extension collects key request metrics for every endpoint registered in a Quart application. Namely:

• http_requests, the number of http requests fulfilled by the application since it started up
• http_requests_errors, the number of http error responses returned by the application since it started up
• http_request_duration_seconds, the amount of time spent handling http requests
• http_request_size_bytes, the size of http requests fulfilled by the application
• http_response_size_bytes, the size of http responses returned by the application

Usage

Initialize the extension with the application

from quart import Quart

app = Quart(__name__)
prometheus_registry = PrometheusRegistry(app=app, metrics_endpoint='internal')

Or you can use the factory pattern

prometheus_registry = PrometheusRegistry(metrics_endpoint='internal')
def create_app()
    app = Quart(__name__)
    prometheus_registry.init_app(app)
    return app