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Create new log_function to add CID to tornado logs

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This commit is contained in:
Kelly O'Brien 2015-06-03 10:01:16 -04:00
parent 05cccbddf0
commit f917579019
1 changed files with 28 additions and 0 deletions
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28
sprockets/mixins/correlation/mixins.py
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@ -81,3 +81,31 @@ class HandlerMixin(object):
""" """
return self.request.headers.get(name, default) return self.request.headers.get(name, default)
def correlation_id_logger(handler):
""" Custom Tornado access log writer that appends correlation-id.
This function can be used to append the coorelation-id to the
Tornado access logs. To use, simply set the value of the
log_function kwarg of the Tornado Application constructor to this
function.
*Example*
web.Application([], log_function=correlation_id_logger)
:param tornado.web.RequestHandler handler: the request handler that
is processing the client request.
"""
if handler.get_status() < 400:
log_method = log.access_log.info
elif handler.get_status() < 500:
log_method = log.access_log.warning
else:
log_method = log.access_log.error
request_time = 1000.0 * handler.request.request_time()
correlation_id = getattr(handler, "correlation_id", None)
if correlation_id is None:
correlation_id = handler.request.headers.get('Correlation-ID', None)
log_method("%d %s %.2fms {CID %s}", handler.get_status(),
handler._request_summary(), request_time, correlation_id)