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#-----------------------------------------------------------------------------
# Copyright (c) Jupyter Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file LICENSE, distributed as part of this software.
#-----------------------------------------------------------------------------
import json
from tornado.log import access_log
from .prometheus.log_functions import prometheus_log_method
def log_request(handler, log=access_log, log_json=False):
"""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 = log.debug
elif status < 400:
log_method = log.info
elif status < 500:
log_method = log.warning
else:
log_method = log.error
request_time = 1000.0 * request.request_time()
ns = dict(
status=status,
method=request.method,
ip=request.remote_ip,
uri=request.uri,
request_time=float('%.2f' % request_time),
)
msg = "{status} {method} {uri} ({ip}) {request_time:f}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
if log_json:
log_method("", extra=dict(props=dict(request.headers)))
else:
log_method(json.dumps(dict(request.headers), indent=2))
if log_json:
log_method("", extra=dict(props=ns))
else:
log_method(msg.format(**ns))
prometheus_log_method(handler)
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