Golang authenticator.NewAuthenticatorFromTokens函数代码示例

// Complete fills in any fields not set that are required to have valid data and can be derived
// from other fields.  If you're going to `ApplyOptions`, do that first.  It's mutating the receiver.
func (c *Config) Complete() completedConfig {
	if len(c.ExternalAddress) == 0 && c.PublicAddress != nil {
		hostAndPort := c.PublicAddress.String()
		if c.ReadWritePort != 0 {
			hostAndPort = net.JoinHostPort(hostAndPort, strconv.Itoa(c.ReadWritePort))
		}
		c.ExternalAddress = hostAndPort
	}
	// All APIs will have the same authentication for now.
	if c.OpenAPIConfig != nil && c.OpenAPIConfig.SecurityDefinitions != nil {
		c.OpenAPIConfig.DefaultSecurity = []map[string][]string{}
		keys := []string{}
		for k := range *c.OpenAPIConfig.SecurityDefinitions {
			keys = append(keys, k)
		}
		sort.Strings(keys)
		for _, k := range keys {
			c.OpenAPIConfig.DefaultSecurity = append(c.OpenAPIConfig.DefaultSecurity, map[string][]string{k: {}})
		}
		if c.OpenAPIConfig.CommonResponses == nil {
			c.OpenAPIConfig.CommonResponses = map[int]spec.Response{}
		}
		if _, exists := c.OpenAPIConfig.CommonResponses[http.StatusUnauthorized]; !exists {
			c.OpenAPIConfig.CommonResponses[http.StatusUnauthorized] = spec.Response{
				ResponseProps: spec.ResponseProps{
					Description: "Unauthorized",
				},
			}
		}
	}
	if c.DiscoveryAddresses == nil {
		c.DiscoveryAddresses = DefaultDiscoveryAddresses{DefaultAddress: c.ExternalAddress}
	}

	// If the loopbackclientconfig is specified AND it has a token for use against the API server
	// wrap the authenticator and authorizer in loopback authentication logic
	if c.Authenticator != nil && c.Authorizer != nil && c.LoopbackClientConfig != nil && len(c.LoopbackClientConfig.BearerToken) > 0 {
		privilegedLoopbackToken := c.LoopbackClientConfig.BearerToken
		var uid = uuid.NewRandom().String()
		tokens := make(map[string]*user.DefaultInfo)
		tokens[privilegedLoopbackToken] = &user.DefaultInfo{
			Name:   user.APIServerUser,
			UID:    uid,
			Groups: []string{user.SystemPrivilegedGroup},
		}

		tokenAuthenticator := apiserverauthenticator.NewAuthenticatorFromTokens(tokens)
		c.Authenticator = authenticatorunion.New(tokenAuthenticator, c.Authenticator)

		tokenAuthorizer := apiserverauthorizer.NewPrivilegedGroups(user.SystemPrivilegedGroup)
		c.Authorizer = authorizerunion.New(tokenAuthorizer, c.Authorizer)
	}

	return completedConfig{c}
}

//.........这里部分代码省略.........
	if modeEnabled(genericoptions.ModeRBAC) {
		mustGetRESTOptions := func(resource string) generic.RESTOptions {
			config, err := storageFactory.NewConfig(rbac.Resource(resource))
			if err != nil {
				glog.Fatalf("Unable to get %s storage: %v", resource, err)
			}
			return generic.RESTOptions{StorageConfig: config, Decorator: generic.UndecoratedStorage, ResourcePrefix: storageFactory.ResourcePrefix(rbac.Resource(resource))}
		}

		// For initial bootstrapping go directly to etcd to avoid privillege escalation check.
		authorizationConfig.RBACRoleRegistry = role.NewRegistry(roleetcd.NewREST(mustGetRESTOptions("roles")))
		authorizationConfig.RBACRoleBindingRegistry = rolebinding.NewRegistry(rolebindingetcd.NewREST(mustGetRESTOptions("rolebindings")))
		authorizationConfig.RBACClusterRoleRegistry = clusterrole.NewRegistry(clusterroleetcd.NewREST(mustGetRESTOptions("clusterroles")))
		authorizationConfig.RBACClusterRoleBindingRegistry = clusterrolebinding.NewRegistry(clusterrolebindingetcd.NewREST(mustGetRESTOptions("clusterrolebindings")))
	}

	apiAuthorizer, err := authorizer.NewAuthorizerFromAuthorizationConfig(authorizationModeNames, authorizationConfig)
	if err != nil {
		glog.Fatalf("Invalid Authorization Config: %v", err)
	}

	admissionControlPluginNames := strings.Split(s.AdmissionControl, ",")
	privilegedLoopbackToken := uuid.NewRandom().String()

	client, err := s.NewSelfClient(privilegedLoopbackToken)
	if err != nil {
		glog.Errorf("Failed to create clientset: %v", err)
	}

	// TODO(dims): We probably need to add an option "EnableLoopbackToken"
	if apiAuthenticator != nil {
		var uid = uuid.NewRandom().String()
		tokens := make(map[string]*user.DefaultInfo)
		tokens[privilegedLoopbackToken] = &user.DefaultInfo{
			Name:   "system:apiserver",
			UID:    uid,
			Groups: []string{"system:masters"},
		}

		tokenAuthenticator := authenticator.NewAuthenticatorFromTokens(tokens)
		apiAuthenticator = authenticatorunion.New(tokenAuthenticator, apiAuthenticator)

		tokenAuthorizer := authorizer.NewPrivilegedGroups("system:masters")
		apiAuthorizer = authorizerunion.New(tokenAuthorizer, apiAuthorizer)
	}

	sharedInformers := informers.NewSharedInformerFactory(client, 10*time.Minute)
	pluginInitializer := admission.NewPluginInitializer(sharedInformers)

	admissionController, err := admission.NewFromPlugins(client, admissionControlPluginNames, s.AdmissionControlConfigFile, pluginInitializer)
	if err != nil {
		glog.Fatalf("Failed to initialize plugins: %v", err)
	}

	genericConfig := genericapiserver.NewConfig(s.ServerRunOptions)
	// TODO: Move the following to generic api server as well.
	genericConfig.Authenticator = apiAuthenticator
	genericConfig.SupportsBasicAuth = len(s.BasicAuthFile) > 0
	genericConfig.Authorizer = apiAuthorizer
	genericConfig.AuthorizerRBACSuperUser = s.AuthorizationRBACSuperUser
	genericConfig.AdmissionControl = admissionController
	genericConfig.APIResourceConfigSource = storageFactory.APIResourceConfigSource
	genericConfig.MasterServiceNamespace = s.MasterServiceNamespace
	genericConfig.ProxyDialer = proxyDialerFn
	genericConfig.ProxyTLSClientConfig = proxyTLSClientConfig
	genericConfig.Serializer = api.Codecs
	genericConfig.OpenAPIInfo.Title = "Kubernetes"
	genericConfig.OpenAPIDefinitions = openapi.OpenAPIDefinitions
	genericConfig.EnableOpenAPISupport = true

	config := &master.Config{
		GenericConfig: genericConfig,

		StorageFactory:          storageFactory,
		EnableWatchCache:        s.EnableWatchCache,
		EnableCoreControllers:   true,
		DeleteCollectionWorkers: s.DeleteCollectionWorkers,
		EventTTL:                s.EventTTL,
		KubeletClient:           kubeletClient,
		EnableUISupport:         true,
		EnableLogsSupport:       true,

		Tunneler: tunneler,
	}

	if s.EnableWatchCache {
		glog.V(2).Infof("Initalizing cache sizes based on %dMB limit", s.TargetRAMMB)
		cachesize.InitializeWatchCacheSizes(s.TargetRAMMB)
		cachesize.SetWatchCacheSizes(s.WatchCacheSizes)
	}

	m, err := config.Complete().New()
	if err != nil {
		return err
	}

	sharedInformers.Start(wait.NeverStop)
	m.Run(s.ServerRunOptions)
	return nil
}

//.........这里部分代码省略.........
			if err != nil {
				glog.Fatalf("Unable to get %s storage: %v", resource, err)
			}
			return generic.RESTOptions{StorageConfig: config, Decorator: generic.UndecoratedStorage, ResourcePrefix: storageFactory.ResourcePrefix(rbac.Resource(resource))}
		}

		// For initial bootstrapping go directly to etcd to avoid privillege escalation check.
		authorizationConfig.RBACRoleRegistry = role.NewRegistry(roleetcd.NewREST(mustGetRESTOptions("roles")))
		authorizationConfig.RBACRoleBindingRegistry = rolebinding.NewRegistry(rolebindingetcd.NewREST(mustGetRESTOptions("rolebindings")))
		authorizationConfig.RBACClusterRoleRegistry = clusterrole.NewRegistry(clusterroleetcd.NewREST(mustGetRESTOptions("clusterroles")))
		authorizationConfig.RBACClusterRoleBindingRegistry = clusterrolebinding.NewRegistry(clusterrolebindingetcd.NewREST(mustGetRESTOptions("clusterrolebindings")))
	}

	apiAuthorizer, err := authorizer.NewAuthorizerFromAuthorizationConfig(authorizationModeNames, authorizationConfig)
	if err != nil {
		glog.Fatalf("Invalid Authorization Config: %v", err)
	}

	admissionControlPluginNames := strings.Split(s.AdmissionControl, ",")
	privilegedLoopbackToken := uuid.NewRandom().String()

	selfClientConfig, err := s.NewSelfClientConfig(privilegedLoopbackToken)
	if err != nil {
		glog.Fatalf("Failed to create clientset: %v", err)
	}
	client, err := s.NewSelfClient(privilegedLoopbackToken)
	if err != nil {
		glog.Errorf("Failed to create clientset: %v", err)
	}

	// TODO(dims): We probably need to add an option "EnableLoopbackToken"
	if apiAuthenticator != nil {
		var uid = uuid.NewRandom().String()
		tokens := make(map[string]*user.DefaultInfo)
		tokens[privilegedLoopbackToken] = &user.DefaultInfo{
			Name:   user.APIServerUser,
			UID:    uid,
			Groups: []string{user.SystemPrivilegedGroup},
		}

		tokenAuthenticator := authenticator.NewAuthenticatorFromTokens(tokens)
		apiAuthenticator = authenticatorunion.New(tokenAuthenticator, apiAuthenticator)

		tokenAuthorizer := authorizer.NewPrivilegedGroups(user.SystemPrivilegedGroup)
		apiAuthorizer = authorizerunion.New(tokenAuthorizer, apiAuthorizer)
	}

	sharedInformers := informers.NewSharedInformerFactory(client, 10*time.Minute)
	pluginInitializer := admission.NewPluginInitializer(sharedInformers)

	admissionController, err := admission.NewFromPlugins(client, admissionControlPluginNames, s.AdmissionControlConfigFile, pluginInitializer)
	if err != nil {
		glog.Fatalf("Failed to initialize plugins: %v", err)
	}
	genericConfig := genericapiserver.NewConfig(s.ServerRunOptions)
	// TODO: Move the following to generic api server as well.
	genericConfig.LoopbackClientConfig = selfClientConfig
	genericConfig.Authenticator = apiAuthenticator
	genericConfig.SupportsBasicAuth = len(s.BasicAuthFile) > 0
	genericConfig.Authorizer = apiAuthorizer
	genericConfig.AuthorizerRBACSuperUser = s.AuthorizationRBACSuperUser
	genericConfig.AdmissionControl = admissionController
	genericConfig.APIResourceConfigSource = storageFactory.APIResourceConfigSource
	genericConfig.MasterServiceNamespace = s.MasterServiceNamespace
	genericConfig.Serializer = api.Codecs
	genericConfig.OpenAPIDefinitions = openapi.OpenAPIDefinitions
	genericConfig.EnableOpenAPISupport = true

	// TODO: Move this to generic api server (Need to move the command line flag).
	if s.EnableWatchCache {
		cachesize.InitializeWatchCacheSizes(s.TargetRAMMB)
		cachesize.SetWatchCacheSizes(s.WatchCacheSizes)
	}

	m, err := genericConfig.Complete().New()
	if err != nil {
		return err
	}

	routes.UIRedirect{}.Install(m.HandlerContainer)
	routes.Logs{}.Install(m.HandlerContainer)

	restOptionsFactory := restOptionsFactory{
		storageFactory:          storageFactory,
		deleteCollectionWorkers: s.DeleteCollectionWorkers,
	}
	if s.EnableWatchCache {
		restOptionsFactory.storageDecorator = registry.StorageWithCacher
	} else {
		restOptionsFactory.storageDecorator = generic.UndecoratedStorage
	}

	installFederationAPIs(m, restOptionsFactory)
	installCoreAPIs(s, m, restOptionsFactory)
	installExtensionsAPIs(m, restOptionsFactory)

	sharedInformers.Start(wait.NeverStop)
	m.Run()
	return nil
}

// startMasterOrDie starts a kubernetes master and an httpserver to handle api requests
func startMasterOrDie(masterConfig *master.Config, incomingServer *httptest.Server, masterReceiver MasterReceiver) (*master.Master, *httptest.Server) {
	var m *master.Master
	var s *httptest.Server

	if incomingServer != nil {
		s = incomingServer
	} else {
		s = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
			m.GenericAPIServer.Handler.ServeHTTP(w, req)
		}))
	}

	if masterConfig == nil {
		masterConfig = NewMasterConfig()
		masterConfig.GenericConfig.EnableProfiling = true
		masterConfig.GenericConfig.EnableSwaggerSupport = true
		masterConfig.GenericConfig.EnableOpenAPISupport = true
		masterConfig.GenericConfig.OpenAPIConfig.Info = &spec.Info{
			InfoProps: spec.InfoProps{
				Title:   "Kubernetes",
				Version: "unversioned",
			},
		}
		masterConfig.GenericConfig.OpenAPIConfig.DefaultResponse = &spec.Response{
			ResponseProps: spec.ResponseProps{
				Description: "Default Response.",
			},
		}
		masterConfig.GenericConfig.OpenAPIConfig.Definitions = openapi.OpenAPIDefinitions
	}

	// set the loopback client config
	if masterConfig.GenericConfig.LoopbackClientConfig == nil {
		masterConfig.GenericConfig.LoopbackClientConfig = &restclient.Config{QPS: 50, Burst: 100, ContentConfig: restclient.ContentConfig{NegotiatedSerializer: api.Codecs}}
	}
	masterConfig.GenericConfig.LoopbackClientConfig.Host = s.URL

	privilegedLoopbackToken := uuid.NewRandom().String()
	// wrap any available authorizer
	tokens := make(map[string]*user.DefaultInfo)
	tokens[privilegedLoopbackToken] = &user.DefaultInfo{
		Name:   user.APIServerUser,
		UID:    uuid.NewRandom().String(),
		Groups: []string{user.SystemPrivilegedGroup},
	}

	tokenAuthenticator := authenticator.NewAuthenticatorFromTokens(tokens)
	if masterConfig.GenericConfig.Authenticator == nil {
		masterConfig.GenericConfig.Authenticator = authenticatorunion.New(tokenAuthenticator, authauthenticator.RequestFunc(alwaysEmpty))
	} else {
		masterConfig.GenericConfig.Authenticator = authenticatorunion.New(tokenAuthenticator, masterConfig.GenericConfig.Authenticator)
	}

	if masterConfig.GenericConfig.Authorizer != nil {
		tokenAuthorizer := authorizer.NewPrivilegedGroups(user.SystemPrivilegedGroup)
		masterConfig.GenericConfig.Authorizer = authorizerunion.New(tokenAuthorizer, masterConfig.GenericConfig.Authorizer)
	} else {
		masterConfig.GenericConfig.Authorizer = alwaysAllow{}
	}

	masterConfig.GenericConfig.LoopbackClientConfig.BearerToken = privilegedLoopbackToken

	m, err := masterConfig.Complete().New()
	if err != nil {
		glog.Fatalf("error in bringing up the master: %v", err)
	}
	if masterReceiver != nil {
		masterReceiver.SetMaster(m)
	}

	cfg := *masterConfig.GenericConfig.LoopbackClientConfig
	cfg.ContentConfig.GroupVersion = &unversioned.GroupVersion{}
	privilegedClient, err := restclient.RESTClientFor(&cfg)
	if err != nil {
		glog.Fatal(err)
	}
	err = wait.PollImmediate(100*time.Millisecond, 30*time.Second, func() (bool, error) {
		result := privilegedClient.Get().AbsPath("/healthz").Do()
		status := 0
		result.StatusCode(&status)
		if status == 200 {
			return true, nil
		}
		return false, nil
	})
	if err != nil {
		glog.Fatal(err)
	}

	// TODO have this start method actually use the normal start sequence for the API server
	// this method never actually calls the `Run` method for the API server
	// fire the post hooks ourselves
	m.GenericAPIServer.RunPostStartHooks()

	// wait for services to be ready
	if masterConfig.EnableCoreControllers {
		// TODO Once /healthz is updated for posthooks, we'll wait for good health
		coreClient := coreclient.NewForConfigOrDie(&cfg)
		svcWatch, err := coreClient.Services(api.NamespaceDefault).Watch(v1.ListOptions{})
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	}
	client, err := s.GenericServerRunOptions.NewSelfClient(privilegedLoopbackToken)
	if err != nil {
		glog.Errorf("Failed to create clientset: %v", err)
	}
	sharedInformers := informers.NewSharedInformerFactory(nil, client, 10*time.Minute)

	authorizationConfig := authorizer.AuthorizationConfig{
		PolicyFile:                  s.GenericServerRunOptions.AuthorizationPolicyFile,
		WebhookConfigFile:           s.GenericServerRunOptions.AuthorizationWebhookConfigFile,
		WebhookCacheAuthorizedTTL:   s.GenericServerRunOptions.AuthorizationWebhookCacheAuthorizedTTL,
		WebhookCacheUnauthorizedTTL: s.GenericServerRunOptions.AuthorizationWebhookCacheUnauthorizedTTL,
		RBACSuperUser:               s.GenericServerRunOptions.AuthorizationRBACSuperUser,
		InformerFactory:             sharedInformers,
	}
	authorizationModeNames := strings.Split(s.GenericServerRunOptions.AuthorizationMode, ",")
	apiAuthorizer, err := authorizer.NewAuthorizerFromAuthorizationConfig(authorizationModeNames, authorizationConfig)
	if err != nil {
		glog.Fatalf("Invalid Authorization Config: %v", err)
	}

	admissionControlPluginNames := strings.Split(s.GenericServerRunOptions.AdmissionControl, ",")

	// TODO(dims): We probably need to add an option "EnableLoopbackToken"
	if apiAuthenticator != nil {
		var uid = uuid.NewRandom().String()
		tokens := make(map[string]*user.DefaultInfo)
		tokens[privilegedLoopbackToken] = &user.DefaultInfo{
			Name:   user.APIServerUser,
			UID:    uid,
			Groups: []string{user.SystemPrivilegedGroup},
		}

		tokenAuthenticator := authenticator.NewAuthenticatorFromTokens(tokens)
		apiAuthenticator = authenticatorunion.New(tokenAuthenticator, apiAuthenticator)

		tokenAuthorizer := authorizer.NewPrivilegedGroups(user.SystemPrivilegedGroup)
		apiAuthorizer = authorizerunion.New(tokenAuthorizer, apiAuthorizer)
	}

	pluginInitializer := admission.NewPluginInitializer(sharedInformers, apiAuthorizer)

	admissionController, err := admission.NewFromPlugins(client, admissionControlPluginNames, s.GenericServerRunOptions.AdmissionControlConfigFile, pluginInitializer)
	if err != nil {
		glog.Fatalf("Failed to initialize plugins: %v", err)
	}

	proxyTransport := utilnet.SetTransportDefaults(&http.Transport{
		Dial:            proxyDialerFn,
		TLSClientConfig: proxyTLSClientConfig,
	})
	kubeVersion := version.Get()

	genericConfig.Version = &kubeVersion
	genericConfig.LoopbackClientConfig = selfClientConfig
	genericConfig.Authenticator = apiAuthenticator
	genericConfig.Authorizer = apiAuthorizer
	genericConfig.AdmissionControl = admissionController
	genericConfig.APIResourceConfigSource = storageFactory.APIResourceConfigSource
	genericConfig.OpenAPIConfig.Info.Title = "Kubernetes"
	genericConfig.OpenAPIConfig.Definitions = generatedopenapi.OpenAPIDefinitions
	genericConfig.EnableOpenAPISupport = true
	genericConfig.EnableMetrics = true
	genericConfig.OpenAPIConfig.SecurityDefinitions = securityDefinitions

	config := &master.Config{