Falcon logging middleware

falcon-logging-middleware.py

import falcon
import logging

logger = logging.getLogger(__name__)
logger.addHandler(logging.FileHandler('test.log'))
logger.setLevel(logging.INFO)

class ResponseLoggerMiddleware(object):
    def process_response(self, req, resp):
        logger.info('{0} {1} {2}'.format(req.method, req.relative_uri, resp.status[:3]))

class TestResource(object):
    def on_post(self, req, resp):
        if req.content_type != 'application/json':
            raise falcon.HTTPUnsupportedMediaType('JSON please!')
        else:
            resp.status = falcon.HTTP_201

application = falcon.API(middleware=[ResponseLoggerMiddleware()])
application.add_route('/test', TestResource())

status-code-logged-incorrectly

$ http POST localhost:8000/test foo=bar Content-Type:application/json
HTTP/1.1 201 Created
$ http POST localhost:8000/test foo=bar Content-Type:application/xml
HTTP/1.1 415 Unsupported Media Type

# test.log
POST /test 201
POST /test 200

Thanks for sharing 🙏

FYI ⬇️ is better to avoid logging-not-lazy.

logger.info('%s %s %s', req.method, req.relative_uri, resp.status[:3])