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# Copyright (C) 2008 Guillermo Gonzalez <guillo.gonzo@gmail.com>
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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 General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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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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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from loggerhead.controllers.error_ui import ErrorUI
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class ErrorHandlerApp(object):
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"""Class for WSGI error logging middleware."""
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def __init__(self, application, **kwargs):
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self.application = application
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def __call__(self, environ, start_response):
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return self.application(environ, start_response)
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# test if exc_info has been set, in the case that
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# the error is caused before BranchWSGGIApp middleware
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if 'exc_info' in environ.keys() and 'branch' in environ.keys():
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# Log and/or report any application errors
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return self.handle_error(environ, start_response)
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# simply propagate the error, this is logged
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# by paste.httpexceptions.TransLogger middleware
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def handle_error(self, environ, start_response):
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"""Exception hanlder."""
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self.log_error(environ)
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return errapp(environ, start_response)
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def log_error(self, environ):
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exc_type, exc_object, exc_tb = environ['exc_info']
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logger = environ['branch'].log
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logger.exception(self.msg, exc_type.__module__,
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exc_type.__name__, exc_object)
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def errapp(environ, start_response):
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"""Default (and trivial) error handling WSGI application."""
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c = ErrorUI(environ['branch'], environ['exc_info'])
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return c(environ, start_response)