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- #-----------------------------------------------------------------------------
- # Copyright (c) Jupyter Development Team
- #
- # Distributed under the terms of the BSD License. The full license is in
- # the file COPYING, distributed as part of this software.
- #-----------------------------------------------------------------------------
-
- import json
- from tornado.log import access_log
- from .metrics import prometheus_log_method
-
- def log_request(handler):
- """log a bit more information about each request than tornado's default
-
- - move static file get success to debug-level (reduces noise)
- - get proxied IP instead of proxy IP
- - log referer for redirect and failed requests
- - log user-agent for failed requests
- """
- status = handler.get_status()
- request = handler.request
- if status < 300 or status == 304:
- # Successes (or 304 FOUND) are debug-level
- log_method = access_log.debug
- elif status < 400:
- log_method = access_log.info
- elif status < 500:
- log_method = access_log.warning
- else:
- log_method = access_log.error
-
- request_time = 1000.0 * handler.request.request_time()
- ns = dict(
- status=status,
- method=request.method,
- ip=request.remote_ip,
- uri=request.uri,
- request_time=request_time,
- )
- msg = "{status} {method} {uri} ({ip}) {request_time:.2f}ms"
- if status >= 400:
- # log bad referers
- ns['referer'] = request.headers.get('Referer', 'None')
- msg = msg + ' referer={referer}'
- if status >= 500 and status != 502:
- # log all headers if it caused an error
- log_method(json.dumps(dict(request.headers), indent=2))
- log_method(msg.format(**ns))
- prometheus_log_method(handler)
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