wsgi.py 文件源码

def __exit__(self, ex_type, ex_value, ex_traceback):
        if not ex_value:
            return True

        if isinstance(ex_value, exception.NotAuthorized):
            msg = six.text_type(ex_value)
            raise Fault(webob.exc.HTTPForbidden(explanation=msg))
        elif isinstance(ex_value, exception.VersionNotFoundForAPIMethod):
            raise
        elif isinstance(ex_value, exception.Invalid):
            raise Fault(exception.ConvertedException(
                code=ex_value.code, explanation=six.text_type(ex_value)))
        elif isinstance(ex_value, TypeError):
            exc_info = (ex_type, ex_value, ex_traceback)
            LOG.error('Exception handling resource: %s',
                      ex_value, exc_info=exc_info)
            raise Fault(webob.exc.HTTPBadRequest())
        elif isinstance(ex_value, Fault):
            LOG.info("Fault thrown: %s", six.text_type(ex_value))
            raise ex_value
        elif isinstance(ex_value, webob.exc.HTTPException):
            LOG.info("HTTP exception thrown: %s", six.text_type(ex_value))
            raise Fault(ex_value)

        # We didn't handle the exception
        return False