Golang util.NewGLogWriterV函數代碼示例

func (o MasterOptions) CreateCerts() error {
	masterAddr, err := o.MasterArgs.GetMasterAddress()
	if err != nil {
		return err
	}
	publicMasterAddr, err := o.MasterArgs.GetMasterPublicAddress()
	if err != nil {
		return err
	}

	signerName := admin.DefaultSignerName()
	hostnames, err := o.MasterArgs.GetServerCertHostnames()
	if err != nil {
		return err
	}
	mintAllCertsOptions := admin.CreateMasterCertsOptions{
		CertDir:            o.MasterArgs.ConfigDir.Value(),
		SignerName:         signerName,
		Hostnames:          hostnames.List(),
		APIServerURL:       masterAddr.String(),
		APIServerCAFiles:   o.MasterArgs.APIServerCAFiles,
		CABundleFile:       admin.DefaultCABundleFile(o.MasterArgs.ConfigDir.Value()),
		PublicAPIServerURL: publicMasterAddr.String(),
		Output:             cmdutil.NewGLogWriterV(3),
	}
	if err := mintAllCertsOptions.Validate(nil); err != nil {
		return err
	}
	if err := mintAllCertsOptions.CreateMasterCerts(); err != nil {
		return err
	}

	return nil
}

func (o NodeOptions) CreateNodeConfig() error {
	getSignerOptions := &admin.SignerCertOptions{
		CertFile:   admin.DefaultCertFilename(o.NodeArgs.MasterCertDir, admin.CAFilePrefix),
		KeyFile:    admin.DefaultKeyFilename(o.NodeArgs.MasterCertDir, admin.CAFilePrefix),
		SerialFile: admin.DefaultSerialFilename(o.NodeArgs.MasterCertDir, admin.CAFilePrefix),
	}

	var dnsIP string
	if len(o.NodeArgs.ClusterDNS) > 0 {
		dnsIP = o.NodeArgs.ClusterDNS.String()
	}

	masterAddr, err := o.NodeArgs.KubeConnectionArgs.GetKubernetesAddress(o.NodeArgs.DefaultKubernetesURL)
	if err != nil {
		return err
	}

	hostnames, err := o.NodeArgs.GetServerCertHostnames()
	if err != nil {
		return err
	}

	nodeConfigDir := o.NodeArgs.ConfigDir.Value()
	createNodeConfigOptions := admin.CreateNodeConfigOptions{
		SignerCertOptions: getSignerOptions,

		NodeConfigDir: nodeConfigDir,

		NodeName:            o.NodeArgs.NodeName,
		Hostnames:           hostnames.List(),
		VolumeDir:           o.NodeArgs.VolumeDir,
		ImageTemplate:       o.NodeArgs.ImageFormatArgs.ImageTemplate,
		AllowDisabledDocker: o.NodeArgs.AllowDisabledDocker,
		DNSDomain:           o.NodeArgs.ClusterDomain,
		DNSIP:               dnsIP,
		ListenAddr:          o.NodeArgs.ListenArg.ListenAddr,
		NetworkPluginName:   o.NodeArgs.NetworkPluginName,

		APIServerURL:     masterAddr.String(),
		APIServerCAFiles: []string{admin.DefaultCABundleFile(o.NodeArgs.MasterCertDir)},

		NodeClientCAFile: getSignerOptions.CertFile,
		ExpireDays:       o.ExpireDays,
		Output:           cmdutil.NewGLogWriterV(3),
	}

	if err := createNodeConfigOptions.Validate(nil); err != nil {
		return err
	}
	if err := createNodeConfigOptions.CreateNodeFolder(); err != nil {
		return err
	}

	return nil
}

// Run launches the OpenShift master. It takes optional installers that may install additional endpoints into the server.
// All endpoints get configured CORS behavior
// Protected installers' endpoints are protected by API authentication and authorization.
// Unprotected installers' endpoints do not have any additional protection added.
func (c *MasterConfig) Run(protected []APIInstaller, unprotected []APIInstaller) {
	var extra []string

	safe := genericapiserver.NewHandlerContainer(http.NewServeMux(), kapi.Codecs)
	open := genericapiserver.NewHandlerContainer(http.NewServeMux(), kapi.Codecs)

	// enforce authentication on protected endpoints
	protected = append(protected, APIInstallFunc(c.InstallProtectedAPI))
	for _, i := range protected {
		msgs, err := i.InstallAPI(safe)
		if err != nil {
			glog.Fatalf("error installing api %v", err)
		}
		extra = append(extra, msgs...)
	}
	handler := c.versionSkewFilter(safe)
	handler = c.authorizationFilter(handler)
	handler = c.impersonationFilter(handler)
	// audit handler must comes before the impersonationFilter to read the original user
	if c.Options.AuditConfig.Enabled {
		attributeGetter := apiserver.NewRequestAttributeGetter(c.getRequestContextMapper(), c.getRequestInfoResolver())
		var writer io.Writer
		if len(c.Options.AuditConfig.AuditFilePath) > 0 {
			writer = &lumberjack.Logger{
				Filename:   c.Options.AuditConfig.AuditFilePath,
				MaxAge:     c.Options.AuditConfig.MaximumFileRetentionDays,
				MaxBackups: c.Options.AuditConfig.MaximumRetainedFiles,
				MaxSize:    c.Options.AuditConfig.MaximumFileSizeMegabytes,
			}
		} else {
			// backwards compatible writer to regular log
			writer = cmdutil.NewGLogWriterV(0)
		}
		handler = audit.WithAudit(handler, attributeGetter, writer)
	}
	handler = authenticationHandlerFilter(handler, c.Authenticator, c.getRequestContextMapper())
	handler = namespacingFilter(handler, c.getRequestContextMapper())
	handler = cacheControlFilter(handler, "no-store") // protected endpoints should not be cached

	// unprotected resources
	unprotected = append(unprotected, APIInstallFunc(c.InstallUnprotectedAPI))
	for _, i := range unprotected {
		msgs, err := i.InstallAPI(open)
		if err != nil {
			glog.Fatalf("error installing api %v", err)
		}
		extra = append(extra, msgs...)
	}

	var kubeAPILevels []string
	if c.Options.KubernetesMasterConfig != nil {
		kubeAPILevels = configapi.GetEnabledAPIVersionsForGroup(*c.Options.KubernetesMasterConfig, kapi.GroupName)
	}

	handler = indexAPIPaths(c.Options.APILevels, kubeAPILevels, handler)

	open.Handle("/", handler)

	// install swagger
	swaggerConfig := swagger.Config{
		WebServicesUrl:   c.Options.MasterPublicURL,
		WebServices:      append(safe.RegisteredWebServices(), open.RegisteredWebServices()...),
		ApiPath:          swaggerAPIPrefix,
		PostBuildHandler: customizeSwaggerDefinition,
	}
	// log nothing from swagger
	swagger.LogInfo = func(format string, v ...interface{}) {}
	swagger.RegisterSwaggerService(swaggerConfig, open)
	extra = append(extra, fmt.Sprintf("Started Swagger Schema API at %%s%s", swaggerAPIPrefix))

	openAPIConfig := openapi.Config{
		SwaggerConfig:  &swaggerConfig,
		IgnorePrefixes: []string{"/swaggerapi"},
		Info: &spec.Info{
			InfoProps: spec.InfoProps{
				Title:   "OpenShift API (with Kubernetes)",
				Version: version.Get().String(),
				License: &spec.License{
					Name: "Apache 2.0 (ASL2.0)",
					URL:  "http://www.apache.org/licenses/LICENSE-2.0",
				},
				Description: heredoc.Doc(`
					OpenShift provides builds, application lifecycle, image content management,
					and administrative policy on top of Kubernetes. The API allows consistent
					management of those objects.

					All API operations are authenticated via an Authorization	bearer token that
					is provided for service accounts as a generated secret (in JWT form) or via
					the native OAuth endpoint located at /oauth/authorize. Core infrastructure
					components may use client certificates that require no authentication.

					All API operations return a 'resourceVersion' string that represents the
					version of the object in the underlying storage. The standard LIST operation
					performs a snapshot read of the underlying objects, returning a resourceVersion
					representing a consistent version of the listed objects. The WATCH operation
					allows all updates to a set of objects after the provided resourceVersion to
//.........這裏部分代碼省略.........

func (c *MasterConfig) buildHandlerChain(assetConfig *AssetConfig) (func(http.Handler, *genericapiserver.Config) (secure, insecure http.Handler), []string, error) {
	var messages []string
	if c.Options.OAuthConfig != nil {
		messages = append(messages, fmt.Sprintf("Started OAuth2 API at %%s%s", OpenShiftOAuthAPIPrefix))
	}

	if assetConfig != nil {
		publicURL, err := url.Parse(assetConfig.Options.PublicURL)
		if err != nil {
			return nil, nil, err
		}
		messages = append(messages, fmt.Sprintf("Started Web Console %%s%s", publicURL.Path))
	}

	// TODO(sttts): resync with upstream handler chain and re-use upstream filters as much as possible
	return func(apiHandler http.Handler, kc *genericapiserver.Config) (secure, insecure http.Handler) {
		attributeGetter := kapiserverfilters.NewRequestAttributeGetter(c.RequestContextMapper)

		handler := c.versionSkewFilter(apiHandler, c.getRequestContextMapper())
		handler = c.authorizationFilter(handler)
		handler = c.impersonationFilter(handler)

		// audit handler must comes before the impersonationFilter to read the original user
		if c.Options.AuditConfig.Enabled {
			var writer io.Writer
			if len(c.Options.AuditConfig.AuditFilePath) > 0 {
				writer = &lumberjack.Logger{
					Filename:   c.Options.AuditConfig.AuditFilePath,
					MaxAge:     c.Options.AuditConfig.MaximumFileRetentionDays,
					MaxBackups: c.Options.AuditConfig.MaximumRetainedFiles,
					MaxSize:    c.Options.AuditConfig.MaximumFileSizeMegabytes,
				}
			} else {
				// backwards compatible writer to regular log
				writer = cmdutil.NewGLogWriterV(0)
			}
			handler = kapiserverfilters.WithAudit(handler, attributeGetter, writer)
		}
		handler = authenticationHandlerFilter(handler, c.Authenticator, c.getRequestContextMapper())
		handler = namespacingFilter(handler, c.getRequestContextMapper())
		handler = cacheControlFilter(handler, "no-store") // protected endpoints should not be cached

		if c.Options.OAuthConfig != nil {
			authConfig, err := BuildAuthConfig(c)
			if err != nil {
				glog.Fatalf("Failed to setup OAuth2: %v", err)
			}
			handler, err = authConfig.WithOAuth(handler)
			if err != nil {
				glog.Fatalf("Failed to setup OAuth2: %v", err)
			}
		}

		handler, err := assetConfig.WithAssets(handler)
		if err != nil {
			glog.Fatalf("Failed to setup serving of assets: %v", err)
		}

		// skip authz/n for the index handler
		handler = WithPatternsHandler(handler, apiHandler, "/", "")

		if c.WebConsoleEnabled() {
			handler = WithAssetServerRedirect(handler, c.Options.AssetConfig.PublicURL)
		}

		handler = kgenericfilters.WithCORS(handler, c.Options.CORSAllowedOrigins, nil, nil, nil, "true")
		handler = kgenericfilters.WithPanicRecovery(handler, c.RequestContextMapper)
		handler = kgenericfilters.WithTimeoutForNonLongRunningRequests(handler, kc.LongRunningFunc)
		// TODO: MaxRequestsInFlight should be subdivided by intent, type of behavior, and speed of
		// execution - updates vs reads, long reads vs short reads, fat reads vs skinny reads.
		// NOTE: read vs. write is implemented in Kube 1.6+
		handler = kgenericfilters.WithMaxInFlightLimit(handler, kc.MaxRequestsInFlight, kc.LongRunningFunc)
		handler = kapiserverfilters.WithRequestInfo(handler, genericapiserver.NewRequestInfoResolver(kc), kc.RequestContextMapper)
		handler = kapi.WithRequestContext(handler, kc.RequestContextMapper)

		return handler, nil
	}, messages, nil
}