如何进行NoAuthMiddlewareBase及NoAuthMiddleware解析

这期内容当中小编将会给大家带来有关如何进行NoAuthMiddlewareBase及NoAuthMiddleware解析，文章内容丰富且以专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。

NoAuthMiddlewareBase解析

class NoAuthMiddlewareBase(base_wsgi.Middleware):"""如果请求头里没有指定对应的请求令牌，则返回一个伪造的令牌."""    def base_call(self, req, project_id_in_path, always_admin=True):if 'X-Auth-Token' not in req.headers:            user_id = req.headers.get('X-Auth-User', 'admin')#设置默认的用户ID            project_id = req.headers.get('X-Auth-Project-Id', 'admin')#设置默认的项目IDif project_id_in_path:                os_url = '/'.join([req.url.rstrip('/'), project_id])else:                os_url = req.url.rstrip('/')            res = webob.Response()# NOTE(vish): This is expecting and returning Auth(1.1), whereas            #             keystone uses 2.0 auth.  We should probably allow            #             2.0 auth here as well.            res.headers['X-Auth-Token'] = '%s:%s' % (user_id, project_id)#伪造token            res.headers['X-Server-Management-Url'] = os_url #设置url            res.content_type = 'text/plain' #设置content-type            res.status = '204'            return res        token = req.headers['X-Auth-Token']        user_id, _sep, project_id = token.partition(':')        project_id = project_id or user_id        remote_address = getattr(req, 'remote_address', '127.0.0.1')if CONF.api.use_forwarded_for:            remote_address = req.headers.get('X-Forwarded-For', remote_address)        is_admin = always_admin or (user_id == 'admin')        ctx = context.RequestContext(user_id,                                     project_id,                                     is_admin=is_admin,                                     remote_address=remote_address)#封装请求上下文        req.environ['nova.context'] = ctxreturn self.application

NoAuthMiddleware解析

class NoAuthMiddleware(NoAuthMiddlewareBase):#继承父类    @webob.dec.wsgify(RequestClass=wsgi.Request)def __call__(self, req):return self.base_call(req, True, always_admin=False)#调用父类的具体实现

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