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# -*- coding: utf-8 -*-
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# Copyright (C) 2010-2019 RhodeCode GmbH
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License, version 3
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# (only), as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# This program is dual-licensed. If you wish to learn more about the
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# RhodeCode Enterprise Edition, including its added features, Support services,
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# and proprietary license terms, please see https://rhodecode.com/licenses/
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"""
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middleware to handle appenlight publishing of errors
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"""
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from appenlight_client import make_appenlight_middleware
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from appenlight_client.exceptions import get_current_traceback
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from appenlight_client.wsgi import AppenlightWSGIWrapper
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def track_exception(environ):
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if 'appenlight.client' not in environ:
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return
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# pass the traceback object to middleware
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environ['appenlight.__traceback'] = get_current_traceback(
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skip=1,
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show_hidden_frames=True,
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ignore_system_exceptions=True)
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def track_extra_information(environ, section, value):
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"""
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Utility function to attach extra information in case of an error condition.
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It will take care of attaching this information to the right place inside
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of `environ`, so that the appenight client can pick it up.
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"""
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environ.setdefault('appenlight.extra', {})
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environ['appenlight.extra'][section] = value
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def wrap_in_appenlight_if_enabled(app, settings, appenlight_client=None):
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"""
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Wraps the given `app` for appenlight support.
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.. important::
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Appenlight expects that the wrapper is executed only once, that's why
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the parameter `appenlight_client` can be used to pass in an already
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existing client instance to avoid that decorators are applied more than
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once.
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This is in use to support our setup of the vcs related middlewares.
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"""
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if settings['appenlight']:
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app = RemoteTracebackTracker(app)
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if not appenlight_client:
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app = make_appenlight_middleware(app, settings)
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appenlight_client = app.appenlight_client
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else:
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app = AppenlightWSGIWrapper(app, appenlight_client)
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return app, appenlight_client
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class RemoteTracebackTracker(object):
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"""
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Utility middleware which forwards VCSServer remote traceback information.
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"""
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def __init__(self, app):
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self.application = app
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def __call__(self, environ, start_response):
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try:
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return self.application(environ, start_response)
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except Exception as e:
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if hasattr(e, '_vcs_server_traceback'):
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track_extra_information(
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environ, 'remote_traceback', e._vcs_server_traceback)
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raise
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