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Add exception traceback handling to Formatter #38

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Add exception traceback handling to Formatter #38

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22 changes: 22 additions & 0 deletions fluent/handler.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
import logging
import socket
import sys
import traceback

try:
import simplejson as json
Expand Down Expand Up @@ -51,6 +52,9 @@ def format(self, record):
data = dict([(key, value % record.__dict__)
for key, value in self._fmt_dict.items()])

if record.exc_info:
self._add_exception_to_record(record)

self._structuring(data, record.msg)
return data

Expand Down Expand Up @@ -83,6 +87,24 @@ def _add_dic(data, dic):
if isinstance(key, basestring):
data[str(key)] = value

def _add_exception_to_record(self, record):
"""
Adds a traceback to record.msg
"""
tb = traceback.format_exception(*record.exc_info)
tb = ''.join(tb)

if isinstance(record.msg, dict):
record.msg.update({"traceback": tb})
elif isinstance(record.msg, basestring):
record.msg = {"message": record.msg,
"traceback": tb}
else:
record.msg = {
"message": record.getMessage(),
"traceback": tb
}


class FluentHandler(logging.Handler):
'''
Expand Down