Golang handlers.Unauthorized函数代码示例

//.........这里部分代码省略.........
	apiVersions := []string{}
	if m.v1 {
		if err := m.api_v1().InstallREST(m.handlerContainer); err != nil {
			glog.Fatalf("Unable to setup API v1: %v", err)
		}
		apiVersions = append(apiVersions, "v1")
	}

	apiserver.InstallSupport(m.muxHelper, m.rootWebService, c.EnableProfiling, healthzChecks...)
	apiserver.AddApiWebService(m.handlerContainer, c.APIPrefix, apiVersions)
	defaultVersion := m.defaultAPIGroupVersion()
	requestInfoResolver := &apiserver.APIRequestInfoResolver{APIPrefixes: util.NewStringSet(strings.TrimPrefix(defaultVersion.Root, "/")), RestMapper: defaultVersion.Mapper}
	apiserver.InstallServiceErrorHandler(m.handlerContainer, requestInfoResolver, apiVersions)

	if m.exp {
		expVersion := m.expapi(c)
		if err := expVersion.InstallREST(m.handlerContainer); err != nil {
			glog.Fatalf("Unable to setup experimental api: %v", err)
		}
		apiserver.AddApiWebService(m.handlerContainer, c.ExpAPIPrefix, []string{expVersion.Version})
		expRequestInfoResolver := &apiserver.APIRequestInfoResolver{APIPrefixes: util.NewStringSet(strings.TrimPrefix(expVersion.Root, "/")), RestMapper: expVersion.Mapper}
		apiserver.InstallServiceErrorHandler(m.handlerContainer, expRequestInfoResolver, []string{expVersion.Version})
	}

	// Register root handler.
	// We do not register this using restful Webservice since we do not want to surface this in api docs.
	// Allow master to be embedded in contexts which already have something registered at the root
	if c.EnableIndex {
		m.mux.HandleFunc("/", apiserver.IndexHandler(m.handlerContainer, m.muxHelper))
	}

	if c.EnableLogsSupport {
		apiserver.InstallLogsSupport(m.muxHelper)
	}
	if c.EnableUISupport {
		ui.InstallSupport(m.muxHelper, m.enableSwaggerSupport)
	}

	if c.EnableProfiling {
		m.mux.HandleFunc("/debug/pprof/", pprof.Index)
		m.mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
		m.mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
	}

	handler := http.Handler(m.mux.(*http.ServeMux))

	// TODO: handle CORS and auth using go-restful
	// See github.com/emicklei/go-restful/blob/master/examples/restful-CORS-filter.go, and
	// github.com/emicklei/go-restful/blob/master/examples/restful-basic-authentication.go

	if len(c.CorsAllowedOriginList) > 0 {
		allowedOriginRegexps, err := util.CompileRegexps(c.CorsAllowedOriginList)
		if err != nil {
			glog.Fatalf("Invalid CORS allowed origin, --cors-allowed-origins flag was set to %v - %v", strings.Join(c.CorsAllowedOriginList, ","), err)
		}
		handler = apiserver.CORS(handler, allowedOriginRegexps, nil, nil, "true")
	}

	m.InsecureHandler = handler

	attributeGetter := apiserver.NewRequestAttributeGetter(m.requestContextMapper, latest.RESTMapper, "api")
	handler = apiserver.WithAuthorizationCheck(handler, attributeGetter, m.authorizer)

	// Install Authenticator
	if c.Authenticator != nil {
		authenticatedHandler, err := handlers.NewRequestAuthenticator(m.requestContextMapper, c.Authenticator, handlers.Unauthorized(c.SupportsBasicAuth), handler)
		if err != nil {
			glog.Fatalf("Could not initialize authenticator: %v", err)
		}
		handler = authenticatedHandler
	}

	// Install root web services
	m.handlerContainer.Add(m.rootWebService)

	// TODO: Make this optional?  Consumers of master depend on this currently.
	m.Handler = handler

	if m.enableSwaggerSupport {
		m.InstallSwaggerAPI()
	}

	// After all wrapping is done, put a context filter around both handlers
	if handler, err := api.NewRequestContextFilter(m.requestContextMapper, m.Handler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		m.Handler = handler
	}

	if handler, err := api.NewRequestContextFilter(m.requestContextMapper, m.InsecureHandler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		m.InsecureHandler = handler
	}

	// TODO: Attempt clean shutdown?
	if m.enableCoreControllers {
		m.NewBootstrapController().Start()
	}
}

func DefaultBuildHandlerChain(apiHandler http.Handler, c *Config) (secure, insecure http.Handler) {
	generic := func(handler http.Handler) http.Handler {
		handler = genericfilters.WithCORS(handler, c.CorsAllowedOriginList, nil, nil, nil, "true")
		handler = genericfilters.WithPanicRecovery(handler, c.RequestContextMapper)
		handler = genericfilters.WithTimeoutForNonLongRunningRequests(handler, c.RequestContextMapper, c.LongRunningFunc)
		handler = genericfilters.WithMaxInFlightLimit(handler, c.MaxRequestsInFlight, c.MaxMutatingRequestsInFlight, c.RequestContextMapper, c.LongRunningFunc)
		handler = apiserverfilters.WithRequestInfo(handler, NewRequestInfoResolver(c), c.RequestContextMapper)
		handler = api.WithRequestContext(handler, c.RequestContextMapper)
		return handler
	}
	audit := func(handler http.Handler) http.Handler {
		return apiserverfilters.WithAudit(handler, c.RequestContextMapper, c.AuditWriter)
	}
	protect := func(handler http.Handler) http.Handler {
		handler = apiserverfilters.WithAuthorization(handler, c.RequestContextMapper, c.Authorizer)
		handler = apiserverfilters.WithImpersonation(handler, c.RequestContextMapper, c.Authorizer)
		handler = audit(handler) // before impersonation to read original user
		handler = authhandlers.WithAuthentication(handler, c.RequestContextMapper, c.Authenticator, authhandlers.Unauthorized(c.SupportsBasicAuth))
		return handler
	}

	return generic(protect(apiHandler)), generic(audit(apiHandler))
}

// init initializes GenericAPIServer.
func (s *GenericAPIServer) init(c *Config) {

	if c.ProxyDialer != nil || c.ProxyTLSClientConfig != nil {
		s.ProxyTransport = utilnet.SetTransportDefaults(&http.Transport{
			Dial:            c.ProxyDialer,
			TLSClientConfig: c.ProxyTLSClientConfig,
		})
	}

	// Register root handler.
	// We do not register this using restful Webservice since we do not want to surface this in api docs.
	// Allow GenericAPIServer to be embedded in contexts which already have something registered at the root
	if c.EnableIndex {
		s.mux.HandleFunc("/", apiserver.IndexHandler(s.HandlerContainer, s.MuxHelper))
	}

	if c.EnableLogsSupport {
		apiserver.InstallLogsSupport(s.MuxHelper)
	}
	if c.EnableUISupport {
		ui.InstallSupport(s.MuxHelper, s.enableSwaggerSupport && s.enableSwaggerUI)
	}

	if c.EnableProfiling {
		s.mux.HandleFunc("/debug/pprof/", pprof.Index)
		s.mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
		s.mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
	}

	handler := http.Handler(s.mux.(*http.ServeMux))

	// TODO: handle CORS and auth using go-restful
	// See github.com/emicklei/go-restful/blob/GenericAPIServer/examples/restful-CORS-filter.go, and
	// github.com/emicklei/go-restful/blob/GenericAPIServer/examples/restful-basic-authentication.go

	if len(c.CorsAllowedOriginList) > 0 {
		allowedOriginRegexps, err := util.CompileRegexps(c.CorsAllowedOriginList)
		if err != nil {
			glog.Fatalf("Invalid CORS allowed origin, --cors-allowed-origins flag was set to %v - %v", strings.Join(c.CorsAllowedOriginList, ","), err)
		}
		handler = apiserver.CORS(handler, allowedOriginRegexps, nil, nil, "true")
	}

	s.InsecureHandler = handler

	attributeGetter := apiserver.NewRequestAttributeGetter(s.RequestContextMapper, s.NewRequestInfoResolver())
	handler = apiserver.WithAuthorizationCheck(handler, attributeGetter, s.authorizer)

	// Install Authenticator
	if c.Authenticator != nil {
		authenticatedHandler, err := handlers.NewRequestAuthenticator(s.RequestContextMapper, c.Authenticator, handlers.Unauthorized(c.SupportsBasicAuth), handler)
		if err != nil {
			glog.Fatalf("Could not initialize authenticator: %v", err)
		}
		handler = authenticatedHandler
	}

	// TODO: Make this optional?  Consumers of GenericAPIServer depend on this currently.
	s.Handler = handler

	// After all wrapping is done, put a context filter around both handlers
	if handler, err := api.NewRequestContextFilter(s.RequestContextMapper, s.Handler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		s.Handler = handler
	}

	if handler, err := api.NewRequestContextFilter(s.RequestContextMapper, s.InsecureHandler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		s.InsecureHandler = handler
	}

	s.installGroupsDiscoveryHandler()
}

//.........这里部分代码省略.........
			},
		}
		storageVersion, found := c.StorageVersions[g.Group]
		if !found {
			glog.Fatalf("Couldn't find storage version of group %v", g.Group)
		}
		group := unversioned.APIGroup{
			Name:             g.Group,
			Versions:         expAPIVersions,
			PreferredVersion: unversioned.GroupVersionForDiscovery{GroupVersion: storageVersion, Version: apiutil.GetVersion(storageVersion)},
		}
		apiserver.AddGroupWebService(m.handlerContainer, c.APIGroupPrefix+"/"+latest.GroupOrDie("extensions").Group, group)
		allGroups = append(allGroups, group)
		apiserver.InstallServiceErrorHandler(m.handlerContainer, m.newRequestInfoResolver(), []string{expVersion.GroupVersion.String()})
	}

	// This should be done after all groups are registered
	// TODO: replace the hardcoded "apis".
	apiserver.AddApisWebService(m.handlerContainer, "/apis", allGroups)

	// Register root handler.
	// We do not register this using restful Webservice since we do not want to surface this in api docs.
	// Allow master to be embedded in contexts which already have something registered at the root
	if c.EnableIndex {
		m.mux.HandleFunc("/", apiserver.IndexHandler(m.handlerContainer, m.muxHelper))
	}

	if c.EnableLogsSupport {
		apiserver.InstallLogsSupport(m.muxHelper)
	}
	if c.EnableUISupport {
		ui.InstallSupport(m.muxHelper, m.enableSwaggerSupport)
	}

	if c.EnableProfiling {
		m.mux.HandleFunc("/debug/pprof/", pprof.Index)
		m.mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
		m.mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
	}

	handler := http.Handler(m.mux.(*http.ServeMux))
	insecureHandler := handler

	// TODO: handle CORS and auth using go-restful
	// See github.com/emicklei/go-restful/blob/master/examples/restful-CORS-filter.go, and
	// github.com/emicklei/go-restful/blob/master/examples/restful-basic-authentication.go

	attributeGetter := apiserver.NewRequestAttributeGetter(m.requestContextMapper, m.newRequestInfoResolver())
	handler = apiserver.WithAuthorizationCheck(handler, attributeGetter, m.authorizer)

	// Install Authenticator
	if c.Authenticator != nil {
		authenticatedHandler, err := handlers.NewRequestAuthenticator(m.requestContextMapper, c.Authenticator, handlers.Unauthorized(c.SupportsBasicAuth), handler)
		if err != nil {
			glog.Fatalf("Could not initialize authenticator: %v", err)
		}
		handler = authenticatedHandler
	}

	// Since OPTIONS request cannot carry authn headers (by w3c standards), we are doing CORS check
	// before auth check. Otherwise all the CORS request will be rejected.
	if len(c.CorsAllowedOriginList) > 0 {
		allowedOriginRegexps, err := util.CompileRegexps(c.CorsAllowedOriginList)
		if err != nil {
			glog.Fatalf("Invalid CORS allowed origin, --cors-allowed-origins flag was set to %v - %v", strings.Join(c.CorsAllowedOriginList, ","), err)
		}
		handler = apiserver.CORS(handler, allowedOriginRegexps, nil, nil, "true")
		insecureHandler = apiserver.CORS(insecureHandler, allowedOriginRegexps, nil, nil, "true")
	}

	m.InsecureHandler = insecureHandler

	// Install root web services
	m.handlerContainer.Add(m.rootWebService)

	// TODO: Make this optional?  Consumers of master depend on this currently.
	m.Handler = handler

	if m.enableSwaggerSupport {
		m.InstallSwaggerAPI()
	}

	// After all wrapping is done, put a context filter around both handlers
	if handler, err := api.NewRequestContextFilter(m.requestContextMapper, m.Handler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		m.Handler = handler
	}

	if handler, err := api.NewRequestContextFilter(m.requestContextMapper, m.InsecureHandler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		m.InsecureHandler = handler
	}

	// TODO: Attempt clean shutdown?
	if m.enableCoreControllers {
		m.NewBootstrapController().Start()
	}
}

func (s *GenericAPIServer) buildHandlerChains(c *Config, handler http.Handler) (secure http.Handler, insecure http.Handler) {
	// filters which insecure and secure have in common
	handler = genericfilters.WithCORS(handler, c.CorsAllowedOriginList, nil, nil, "true")

	// insecure filters
	insecure = handler
	insecure = genericfilters.WithPanicRecovery(insecure, s.NewRequestInfoResolver())
	insecure = genericfilters.WithTimeoutForNonLongRunningRequests(insecure, c.LongRunningFunc)

	// secure filters
	attributeGetter := apiserverfilters.NewRequestAttributeGetter(c.RequestContextMapper, s.NewRequestInfoResolver())
	secure = handler
	secure = apiserverfilters.WithAuthorization(secure, attributeGetter, c.Authorizer)
	secure = apiserverfilters.WithImpersonation(secure, c.RequestContextMapper, c.Authorizer)
	secure = apiserverfilters.WithAudit(secure, attributeGetter, c.AuditWriter) // before impersonation to read original user
	secure = authhandlers.WithAuthentication(secure, c.RequestContextMapper, c.Authenticator, authhandlers.Unauthorized(c.SupportsBasicAuth))
	secure = genericfilters.WithPanicRecovery(secure, s.NewRequestInfoResolver())
	secure = genericfilters.WithTimeoutForNonLongRunningRequests(secure, c.LongRunningFunc)
	secure = genericfilters.WithMaxInFlightLimit(secure, c.MaxRequestsInFlight, c.LongRunningFunc)

	return
}

//.........这里部分代码省略.........
	}
	if m.v1 {
		if err := m.api_v1().InstallREST(m.handlerContainer); err != nil {
			glog.Fatalf("Unable to setup API v1: %v", err)
		}
		apiVersions = append(apiVersions, "v1")
	}

	apiserver.InstallSupport(m.muxHelper, m.rootWebService, c.EnableProfiling, healthzChecks...)
	apiserver.AddApiWebService(m.handlerContainer, c.APIPrefix, apiVersions)
	defaultVersion := m.defaultAPIGroupVersion()
	requestInfoResolver := &apiserver.APIRequestInfoResolver{APIPrefixes: sets.NewString(strings.TrimPrefix(defaultVersion.Root, "/")), RestMapper: defaultVersion.Mapper}
	apiserver.InstallServiceErrorHandler(m.handlerContainer, requestInfoResolver, apiVersions)

	if m.exp {
		expVersion := m.experimental(c)
		if err := expVersion.InstallREST(m.handlerContainer); err != nil {
			glog.Fatalf("Unable to setup experimental api: %v", err)
		}
		apiserver.AddApiWebService(m.handlerContainer, c.ExpAPIPrefix, []string{expVersion.Version})
		expRequestInfoResolver := &apiserver.APIRequestInfoResolver{APIPrefixes: sets.NewString(strings.TrimPrefix(expVersion.Root, "/")), RestMapper: expVersion.Mapper}
		apiserver.InstallServiceErrorHandler(m.handlerContainer, expRequestInfoResolver, []string{expVersion.Version})
	}

	// Register root handler.
	// We do not register this using restful Webservice since we do not want to surface this in api docs.
	// Allow master to be embedded in contexts which already have something registered at the root
	if c.EnableIndex {
		m.mux.HandleFunc("/", apiserver.IndexHandler(m.handlerContainer, m.muxHelper))
	}

	if c.EnableLogsSupport {
		apiserver.InstallLogsSupport(m.muxHelper)
	}
	/*if c.EnableUISupport {
		ui.InstallSupport(m.mux)
	}*/

	if c.EnableProfiling {
		m.mux.HandleFunc("/debug/pprof/", pprof.Index)
		m.mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
		m.mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
	}

	handler := http.Handler(m.mux.(*http.ServeMux))

	// TODO: handle CORS and auth using go-restful
	// See github.com/emicklei/go-restful/blob/master/examples/restful-CORS-filter.go, and
	// github.com/emicklei/go-restful/blob/master/examples/restful-basic-authentication.go

	if len(c.CorsAllowedOriginList) > 0 {
		allowedOriginRegexps, err := util.CompileRegexps(c.CorsAllowedOriginList)
		if err != nil {
			glog.Fatalf("Invalid CORS allowed origin, --cors-allowed-origins flag was set to %v - %v", strings.Join(c.CorsAllowedOriginList, ","), err)
		}
		handler = apiserver.CORS(handler, allowedOriginRegexps, nil, nil, "true")
	}

	m.InsecureHandler = handler

	attributeGetter := apiserver.NewRequestAttributeGetter(m.requestContextMapper, latest.RESTMapper, "api")
	handler = apiserver.WithAuthorizationCheck(handler, attributeGetter, m.authorizer)

	// Install Authenticator
	if c.Authenticator != nil {
		authenticatedHandler, err := handlers.NewRequestAuthenticator(m.requestContextMapper, c.Authenticator, handlers.Unauthorized(c.SupportsBasicAuth), handler)
		if err != nil {
			glog.Fatalf("Could not initialize authenticator: %v", err)
		}
		handler = authenticatedHandler
	}

	// Install root web services
	m.handlerContainer.Add(m.rootWebService)

	// TODO: Make this optional?  Consumers of master depend on this currently.
	m.Handler = handler

	if m.enableSwaggerSupport {
		m.InstallSwaggerAPI()
	}

	// After all wrapping is done, put a context filter around both handlers
	if handler, err := api.NewRequestContextFilter(m.requestContextMapper, m.Handler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		m.Handler = handler
	}

	if handler, err := api.NewRequestContextFilter(m.requestContextMapper, m.InsecureHandler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		m.InsecureHandler = handler
	}

	// TODO: Attempt clean shutdown?
	if m.enableCoreControllers {
		m.NewBootstrapController().Start()
	}
}

// handlerChain is a method to build the handler chain for this API server.  We need a custom handler chain so that we
// can have custom handling for `/apis`, since we're hosting discovery differently from anyone else and we're hosting
// the endpoints differently, since we're proxying all groups except for apiregistration.k8s.io.
func (h *handlerChainConfig) handlerChain(apiHandler http.Handler, c *genericapiserver.Config) (secure, insecure http.Handler) {
	// add this as a filter so that we never collide with "already registered" failures on `/apis`
	handler := WithAPIs(apiHandler, h.informers.Apiregistration().InternalVersion().APIServices())

	handler = apiserverfilters.WithAuthorization(handler, c.RequestContextMapper, c.Authorizer)

	// this mux is NOT protected by authorization, but DOES have authentication information
	// this is so that everyone can hit the proxy and we can properly identify the user.  The backing
	// API server will deal with authorization
	handler = WithProxyMux(handler, h.proxyMux)

	handler = apiserverfilters.WithImpersonation(handler, c.RequestContextMapper, c.Authorizer)
	// audit to stdout to help with debugging as we get this started
	handler = apiserverfilters.WithAudit(handler, c.RequestContextMapper, os.Stdout)
	handler = authhandlers.WithAuthentication(handler, c.RequestContextMapper, c.Authenticator, authhandlers.Unauthorized(c.SupportsBasicAuth))

	handler = genericfilters.WithCORS(handler, c.CorsAllowedOriginList, nil, nil, nil, "true")
	handler = genericfilters.WithPanicRecovery(handler, c.RequestContextMapper)
	handler = genericfilters.WithTimeoutForNonLongRunningRequests(handler, c.RequestContextMapper, c.LongRunningFunc)
	handler = genericfilters.WithMaxInFlightLimit(handler, c.MaxRequestsInFlight, c.MaxMutatingRequestsInFlight, c.RequestContextMapper, c.LongRunningFunc)
	handler = apiserverfilters.WithRequestInfo(handler, genericapiserver.NewRequestInfoResolver(c), c.RequestContextMapper)
	handler = api.WithRequestContext(handler, c.RequestContextMapper)

	return handler, nil
}