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145 lines
3.8 KiB
Python
145 lines
3.8 KiB
Python
# Copyright (c) 2009 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Breakpad for Python.
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Sends a notification when a process stops on an exception.
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It is only enabled when all these conditions are met:
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1. hostname finishes with '.google.com' or 'chromium.org'
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2. main module name doesn't contain the word 'test'
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3. no NO_BREAKPAD environment variable is defined
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"""
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import atexit
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import getpass
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import os
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import socket
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import sys
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import time
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import traceback
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import urllib
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import urllib2
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# Configure these values.
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DEFAULT_URL = 'https://chromium-status.appspot.com'
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# Global variable to prevent double registration.
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_REGISTERED = False
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_TIME_STARTED = time.time()
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_HOST_NAME = socket.getfqdn()
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def post(url, params):
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"""HTTP POST with timeout when it's supported."""
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kwargs = {}
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if (sys.version_info[0] * 10 + sys.version_info[1]) >= 26:
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kwargs['timeout'] = 4
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request = urllib2.urlopen(url, urllib.urlencode(params), **kwargs)
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out = request.read()
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request.close()
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return out
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def FormatException(e):
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"""Returns a human readable form of an exception.
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Adds the maximum number of interesting information in the safest way."""
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try:
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out = repr(e)
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except Exception:
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out = ''
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try:
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out = str(e)
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if isinstance(e, Exception):
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# urllib exceptions, usually the HTTP headers.
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if hasattr(e, 'headers'):
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out += '\nHeaders: %s' % e.headers
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if hasattr(e, 'url'):
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out += '\nUrl: %s' % e.url
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if hasattr(e, 'msg'):
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out += '\nMsg: %s' % e.msg
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# The web page in some urllib exceptions.
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if hasattr(e, 'read') and callable(e.read):
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out += '\nread(): %s' % e.read()
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if hasattr(e, 'info') and callable(e.info):
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out += '\ninfo(): %s' % e.info()
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except Exception:
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pass
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return out
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def SendStack(last_tb, stack, url=None, maxlen=50):
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"""Sends the stack trace to the breakpad server."""
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if not url:
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url = DEFAULT_URL + '/breakpad'
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print 'Sending crash report ...'
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try:
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params = {
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'args': sys.argv,
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'stack': stack[0:4096],
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'user': getpass.getuser(),
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'exception': FormatException(last_tb),
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'host': _HOST_NAME,
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'cwd': os.getcwd(),
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'version': sys.version,
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}
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# pylint: disable=W0702
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print('\n'.join(' %s: %s' % (k, v[0:maxlen])
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for k, v in params.iteritems()))
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print(post(url, params))
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except IOError:
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print('There was a failure while trying to send the stack trace. Too bad.')
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def SendProfiling(url=None):
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try:
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if not url:
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url = DEFAULT_URL + '/profiling'
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params = {
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'argv': ' '.join(sys.argv),
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# Strip the hostname.
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'domain': _HOST_NAME.split('.', 1)[-1],
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'duration': time.time() - _TIME_STARTED,
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'platform': sys.platform,
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}
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post(url, params)
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except IOError:
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pass
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def CheckForException():
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"""Runs at exit. Look if there was an exception active."""
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last_value = getattr(sys, 'last_value', None)
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if last_value:
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if not isinstance(last_value, KeyboardInterrupt):
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last_tb = getattr(sys, 'last_traceback', None)
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if last_tb:
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SendStack(last_value, ''.join(traceback.format_tb(last_tb)))
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else:
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SendProfiling()
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def Register():
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"""Registers the callback at exit. Calling it multiple times is no-op."""
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global _REGISTERED
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if _REGISTERED:
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return
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_REGISTERED = True
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atexit.register(CheckForException)
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# Skip unit tests and we don't want anything from non-googler.
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if (not 'test' in sys.modules['__main__'].__file__ and
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not 'NO_BREAKPAD' in os.environ and
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(_HOST_NAME.endswith('.google.com') or
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_HOST_NAME.endswith('.chromium.org'))):
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Register()
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# Uncomment this line if you want to test it out.
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#Register()
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