欢迎关注我的公众号：

 目前刚开始写一个月，一共写了18篇原创文章，文章目录如下：

istio多集群探秘，部署了50次多集群后我得出的结论

istio多集群链路追踪，附实操视频

istio防故障利器，你知道几个,istio新手不要读，太难！

istio业务权限控制，原来可以这么玩

istio实现非侵入压缩，微服务之间如何实现压缩

不懂envoyfilter也敢说精通istio系列-http-rbac-不要只会用AuthorizationPolicy配置权限

不懂envoyfilter也敢说精通istio系列-02-http-corsFilter-不要只会vs

不懂envoyfilter也敢说精通istio系列-03-http-csrf filter-再也不用再代码里写csrf逻辑了

不懂envoyfilter也敢说精通istio系列http-jwt_authn-不要只会RequestAuthorization

不懂envoyfilter也敢说精通istio系列-05-fault-filter-故障注入不止是vs

不懂envoyfilter也敢说精通istio系列-06-http-match-配置路由不只是vs

不懂envoyfilter也敢说精通istio系列-07-负载均衡配置不止是dr

不懂envoyfilter也敢说精通istio系列-08-连接池和断路器

不懂envoyfilter也敢说精通istio系列-09-http-route filter

不懂envoyfilter也敢说精通istio系列-network filter-redis proxy

不懂envoyfilter也敢说精通istio系列-network filter-HttpConnectionManager

不懂envoyfilter也敢说精通istio系列-ratelimit-istio ratelimit完全手册

 

加qq群，请联系：

————————————————

//创建rollout命令
func NewCmdRollout(f cmdutil.Factory, streams genericclioptions.IOStreams) *cobra.Command {cmd := &cobra.Command{//创建cobra命令Use:                   "rollout SUBCOMMAND",DisableFlagsInUseLine: true,Short:                 i18n.T("Manage the rollout of a resource"),Long:                  rolloutLong,Example:               rolloutExample,Run:                   cmdutil.DefaultSubCommandRun(streams.Out),}// subcommandscmd.AddCommand(NewCmdRolloutHistory(f, streams))//添加history命令cmd.AddCommand(NewCmdRolloutPause(f, streams))//添加pause命令cmd.AddCommand(NewCmdRolloutResume(f, streams))//添加resume命令cmd.AddCommand(NewCmdRolloutUndo(f, streams))//添加undo命令cmd.AddCommand(NewCmdRolloutStatus(f, streams))//添加status命令cmd.AddCommand(NewCmdRolloutRestart(f, streams))//添加restart命令return cmd
}

type RolloutHistoryOptions struct {//history结构体PrintFlags *genericclioptions.PrintFlagsToPrinter  func(string) (printers.ResourcePrinter, error)Revision int64Builder          func() *resource.BuilderResources        []stringNamespace        stringEnforceNamespace boolHistoryViewer    polymorphichelpers.HistoryViewerFuncRESTClientGetter genericclioptions.RESTClientGetterresource.FilenameOptionsgenericclioptions.IOStreams
}// NewRolloutHistoryOptions returns an initialized RolloutHistoryOptions instance
func NewRolloutHistoryOptions(streams genericclioptions.IOStreams) *RolloutHistoryOptions {return &RolloutHistoryOptions{//初始化history结构体PrintFlags: genericclioptions.NewPrintFlags("").WithTypeSetter(scheme.Scheme),IOStreams:  streams,}
}

//创建history命令
func NewCmdRolloutHistory(f cmdutil.Factory, streams genericclioptions.IOStreams) *cobra.Command {o := NewRolloutHistoryOptions(streams)//初始化结构体validArgs := []string{"deployment", "daemonset", "statefulset"}cmd := &cobra.Command{//创建cobra命令Use:                   "history (TYPE NAME | TYPE/NAME) [flags]",DisableFlagsInUseLine: true,Short:                 i18n.T("View rollout history"),Long:                  historyLong,Example:               historyExample,Run: func(cmd *cobra.Command, args []string) {cmdutil.CheckErr(o.Complete(f, cmd, args))//准备运行cmdutil.CheckErr(o.Validate())//校验cmdutil.CheckErr(o.Run())//运行},ValidArgs: validArgs,}cmd.Flags().Int64Var(&o.Revision, "revision", o.Revision, "See the details, including podTemplate of the revision specified")//创建revision选项usage := "identifying the resource to get from a server."cmdutil.AddFilenameOptionFlags(cmd, &o.FilenameOptions, usage)//文件选项o.PrintFlags.AddFlags(cmd)//打印选项return cmd
}

//准备
func (o *RolloutHistoryOptions) Complete(f cmdutil.Factory, cmd *cobra.Command, args []string) error {o.Resources = args//设置resourcesvar err errorif o.Namespace, o.EnforceNamespace, err = f.ToRawKubeConfigLoader().Namespace(); err != nil {//获取namespace和enforceNamespacereturn err}o.ToPrinter = func(operation string) (printers.ResourcePrinter, error) {//printflag转printer函数o.PrintFlags.NamePrintFlags.Operation = operationreturn o.PrintFlags.ToPrinter()}o.HistoryViewer = polymorphichelpers.HistoryViewerFn//historyViewer函数o.RESTClientGetter = f//RestClientGerrtero.Builder = f.NewBuilder//设置builderreturn nil
}

//校验
func (o *RolloutHistoryOptions) Validate() error {if len(o.Resources) == 0 && cmdutil.IsFilenameSliceEmpty(o.Filenames, o.Kustomize) {//资源和文件至少指定一个return fmt.Errorf("required resource not specified")}if o.Revision < 0 {//revision必须大于0return fmt.Errorf("revision must be a positive integer: %v", o.Revision)}return nil
}

//运行
func (o *RolloutHistoryOptions) Run() error {r := o.Builder().WithScheme(scheme.Scheme, scheme.Scheme.PrioritizedVersionsAllGroups()...).NamespaceParam(o.Namespace).DefaultNamespace().FilenameParam(o.EnforceNamespace, &o.FilenameOptions).ResourceTypeOrNameArgs(true, o.Resources...).ContinueOnError().Latest().Flatten().Do()//构造result对象if err := r.Err(); err != nil {return err}return r.Visit(func(info *resource.Info, err error) error {// visiter result遍历info对象if err != nil {return err}mapping := info.ResourceMapping()historyViewer, err := o.HistoryViewer(o.RESTClientGetter, mapping)//获取HistoryViewerif err != nil {return err}historyInfo, err := historyViewer.ViewHistory(info.Namespace, info.Name, o.Revision)//获取历史信息if err != nil {return err}withRevision := ""if o.Revision > 0 {withRevision = fmt.Sprintf("with revision #%d", o.Revision)}printer, err := o.ToPrinter(fmt.Sprintf("%s\n%s", withRevision, historyInfo))//获取printerif err != nil {return err}return printer.PrintObj(info.Object, o.Out)//打印结果})
}