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This article will explain in detail how to parse FaultWrapper. The content of the article is of high quality, so the editor will share it for you as a reference. I hope you will have some understanding of the relevant knowledge after reading this article.

FaultWrapper parses class FaultWrapper (base_wsgi.Middleware): # inherits the basic WSGI middleware "" invokes the middleware stack and encapsulates exceptions into faults. " _ status_to_type = {} @ staticmethod def status_to_type (status): # convert to the corresponding type instance if not FaultWrapper._status_to_type:for clazz in utils.walk_class_hierarchy (webob.exc.HTTPError) of webob according to the status code: # traverse the HTTPError class hierarchy construction FaultWrapper._status_to_ type [clazz.code] = clazzreturn FaultWrapper._status_to_type.get ( Status Webob.exc.HTTPInternalServerError) () def _ error (self, inner, req): LOG.exception (_ LE ("Caught error:% s"), inner) safe = getattr (inner, 'safe', False) headers = getattr (inner,' headers', None) status = getattr (inner, 'code', 500) if status is None: status = 500msg_dict = dict (url=req.url Status=status) LOG.info (_ LI ("% (url) s returned with HTTP% (status) d"), msg_dict) outer = self.status_to_type (status) # call the exception conversion method if headers: outer.headers = headers# NOTE (johannes): We leave the explanation empty here on # purpose. It could possibly have sensitive information # that should not be returned back to the user. See # bugs 868360 and 874472 # NOTE (eglynn): However, it would be over-conservative and # inconsistent with the EC2 API to hide every exception, # including those that are safe to expose, see bug 1021373 if safe: # process translation user_locale = req.best_match_language () inner_msg = translate (inner.message User_locale) outer.explanation ='% s:% s'% (inner.__class__.__name__, inner_msg) notifications.send_api_fault (req.url, status) Inner) # call rpc to send api error to message queue return wsgi.Fault (outer) # return webob.exc.HTTPException error object @ webob.dec.wsgify (RequestClass=wsgi.Request) def _ _ call__ (self, req): try:return req.get_response (self.application) # execute wsgi application except Exception as ex:return self._error (ex, req) # after encountering exception Call this method to deal with exception, encapsulated as http error return, so much for sharing on how to parse FaultWrapper. I hope the above content can be helpful to you and learn more knowledge. If you think the article is good, you can share it for more people to see.

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