You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.8 KiB
64 lines
1.8 KiB
4 years ago
|
#!/usr/bin/env python
|
||
|
|
# Copyright 2004 Google Inc. All Rights Reserved.
|
||
|
|
#
|
||
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
# you may not use this file except in compliance with the License.
|
||
|
|
# You may obtain a copy of the License at
|
||
|
|
#
|
||
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
#
|
||
|
|
# Unless required by applicable law or agreed to in writing, software
|
||
|
|
# distributed under the License is distributed on an "AS-IS" BASIS,
|
||
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
# See the License for the specific language governing permissions and
|
||
|
|
# limitations under the License.
|
||
|
|
#
|
||
|
|
# This code must be source compatible with Python 2.6 through 3.3.
|
||
|
|
|
||
|
|
"""Import this module to add a hook to call pdb on uncaught exceptions.
|
||
|
|
|
||
|
|
To enable this, do the following in your top-level application:
|
||
|
|
|
||
|
|
import google.apputils.debug
|
||
|
|
|
||
|
|
and then in your main():
|
||
|
|
|
||
|
|
google.apputils.debug.Init()
|
||
|
|
|
||
|
|
Then run your program with --pdb.
|
||
|
|
"""
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
import sys
|
||
|
|
|
||
|
|
import gflags as flags
|
||
|
|
|
||
|
|
flags.DEFINE_boolean('pdb', 0, 'Drop into pdb on uncaught exceptions')
|
||
|
|
|
||
|
|
old_excepthook = None
|
||
|
|
|
||
|
|
|
||
|
|
def _DebugHandler(exc_class, value, tb):
|
||
|
|
if not flags.FLAGS.pdb or hasattr(sys, 'ps1') or not sys.stderr.isatty():
|
||
|
|
# we aren't in interactive mode or we don't have a tty-like
|
||
|
|
# device, so we call the default hook
|
||
|
|
old_excepthook(exc_class, value, tb)
|
||
|
|
else:
|
||
|
|
# Don't impose import overhead on apps that never raise an exception.
|
||
|
|
import traceback
|
||
|
|
import pdb
|
||
|
|
# we are in interactive mode, print the exception...
|
||
|
|
traceback.print_exception(exc_class, value, tb)
|
||
|
|
sys.stdout.write('\n')
|
||
|
|
# ...then start the debugger in post-mortem mode.
|
||
|
|
pdb.pm()
|
||
|
|
|
||
|
|
|
||
|
|
def Init():
|
||
|
|
# Must back up old excepthook.
|
||
|
|
global old_excepthook # pylint: disable=global-statement
|
||
|
|
if old_excepthook is None:
|
||
|
|
old_excepthook = sys.excepthook
|
||
|
|
sys.excepthook = _DebugHandler
|