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raven
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__init__.py
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__pycache__
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base.py
(29.4 KB)
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breadcrumbs.py
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conf
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context.py
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contrib
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data
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events.py
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exceptions.py
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handlers
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middleware.py
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processors.py
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scripts
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transport
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utils
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versioning.py
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Editing: middleware.py
""" raven.middleware ~~~~~~~~~~~~~~~~~~~~~~~~ :copyright: (c) 2010-2012 by the Sentry Team, see AUTHORS for more details. :license: BSD, see LICENSE for more details. """ from __future__ import absolute_import from contextlib import contextmanager from raven.utils.compat import Iterator, next from raven.utils.wsgi import ( get_current_url, get_headers, get_environ) @contextmanager def common_exception_handling(environ, client): try: yield except (StopIteration, GeneratorExit): # Make sure we do this explicitly here. At least GeneratorExit # is handled implicitly by the rest of the logic but we want # to make sure this does not regress raise except Exception: client.handle_exception(environ) raise except KeyboardInterrupt: client.handle_exception(environ) raise except SystemExit as e: if e.code != 0: client.handle_exception(environ) raise class ClosingIterator(Iterator): """ An iterator that is implements a ``close`` method as-per WSGI recommendation. """ def __init__(self, sentry, iterable, environ): self.sentry = sentry self.environ = environ self._close = getattr(iterable, 'close', None) self.iterable = iter(iterable) self.closed = False def __iter__(self): return self def __next__(self): try: with common_exception_handling(self.environ, self.sentry): return next(self.iterable) except StopIteration: # We auto close here if we reach the end because some WSGI # middleware does not really like to close things. To avoid # massive leaks we just close automatically at the end of # iteration. self.close() raise def close(self): if self.closed: return try: if self._close is not None: with common_exception_handling(self.environ, self.sentry): self._close() finally: self.sentry.client.context.clear() self.sentry.client.transaction.clear() self.closed = True class Sentry(object): """ A WSGI middleware which will attempt to capture any uncaught exceptions and send them to Sentry. >>> from raven.base import Client >>> application = Sentry(application, Client()) """ def __init__(self, application, client=None): self.application = application if client is None: from raven.base import Client client = Client() self.client = client def __call__(self, environ, start_response): # TODO(dcramer): ideally this is lazy, but the context helpers must # support callbacks first self.client.http_context(self.get_http_context(environ)) with common_exception_handling(environ, self): iterable = self.application(environ, start_response) return ClosingIterator(self, iterable, environ) def get_http_context(self, environ): return { 'method': environ.get('REQUEST_METHOD'), 'url': get_current_url(environ, strip_querystring=True), 'query_string': environ.get('QUERY_STRING'), # TODO # 'data': environ.get('wsgi.input'), 'headers': dict(get_headers(environ)), 'env': dict(get_environ(environ)), } def handle_exception(self, environ=None): return self.client.captureException()
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