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183 lines
5.0 KiB
183 lines
5.0 KiB
package main
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import (
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"context"
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"flag"
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"fmt"
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"os"
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"strings"
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)
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func handleAliasCommand() {
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if len(os.Args) < 3 {
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fmt.Fprintf(os.Stderr, "%s alias: subcommand missing\n", os.Args[0])
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printAliasUsage()
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os.Exit(1)
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}
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subcmd := strings.ToLower(os.Args[2])
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switch subcmd {
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case "list":
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listcmd := flag.NewFlagSet("alias list", flag.ExitOnError)
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listcmd.SetOutput(os.Stdout)
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cfgpath := listcmd.String("config", "", "path to configuration")
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server := listcmd.String("server", "", "server name to use")
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aname := listcmd.String("name", "", "filter list to named alias")
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listcmd.Parse(os.Args[3:])
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cfg := LoadConfig(*cfgpath)
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es := cfg.GetClient(*server)
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aliases, err := es.CatAliases().Do(context.Background())
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if err != nil {
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fmt.Fprintf(os.Stderr, "elastic error: %s\n", err.Error())
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os.Exit(1)
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}
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for _, alias := range aliases {
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if *aname != "" {
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if alias.Alias == *aname {
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fmt.Printf("%s\n", alias.Index)
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}
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} else {
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fmt.Printf("%s %s\n", alias.Alias, alias.Index)
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}
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}
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case "create":
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createcmd := flag.NewFlagSet("alias create", flag.ExitOnError)
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createcmd.SetOutput(os.Stdout)
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cfgpath := createcmd.String("config", "", "path to configuration")
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server := createcmd.String("server", "", "server name to use")
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aname := createcmd.String("name", "", "(required) name of alias")
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iname := createcmd.String("index", "", "(required) name of index")
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createcmd.Parse(os.Args[3:])
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if *aname == "" {
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fmt.Fprintf(os.Stderr, "name parameter is required for alias create\n")
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createcmd.PrintDefaults()
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os.Exit(1)
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}
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if *iname == "" {
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fmt.Fprintf(os.Stderr, "index parameter is required for alias create\n")
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createcmd.PrintDefaults()
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os.Exit(1)
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}
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cfg := LoadConfig(*cfgpath)
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es := cfg.GetClient(*server)
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_, err := es.Alias().Add(*iname, *aname).Do(context.Background())
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if err != nil {
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fmt.Fprintf(os.Stderr, "elastic error: %s\n", err.Error())
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os.Exit(1)
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}
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case "delete":
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deletecmd := flag.NewFlagSet("alias delete", flag.ExitOnError)
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deletecmd.SetOutput(os.Stdout)
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cfgpath := deletecmd.String("config", "", "path to configuration")
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server := deletecmd.String("server", "", "server name to use")
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aname := deletecmd.String("name", "", "(required) name of alias")
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iname := deletecmd.String("index", "", "(required) name of index")
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deletecmd.Parse(os.Args[3:])
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if *aname == "" {
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fmt.Fprintf(os.Stderr, "name parameter is required for alias delete\n")
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deletecmd.PrintDefaults()
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os.Exit(1)
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}
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if *iname == "" {
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fmt.Fprintf(os.Stderr, "index parameter is required for alias delete\n")
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deletecmd.PrintDefaults()
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os.Exit(1)
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}
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cfg := LoadConfig(*cfgpath)
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es := cfg.GetClient(*server)
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_, err := es.Alias().Remove(*iname, *aname).Do(context.Background())
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if err != nil {
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fmt.Fprintf(os.Stderr, "elastic error: %s\n", err.Error())
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os.Exit(1)
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}
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case "replace":
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replacecmd := flag.NewFlagSet("alias replace", flag.ExitOnError)
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replacecmd.SetOutput(os.Stdout)
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cfgpath := replacecmd.String("config", "", "path to configuration")
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server := replacecmd.String("server", "", "server name to use")
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aname := replacecmd.String("name", "", "(required) name of alias")
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oiname := replacecmd.String("oldindex", "", "name of the old index")
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niname := replacecmd.String("newindex", "",
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"(required) name of the new index")
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replacecmd.Parse(os.Args[3:])
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if *aname == "" {
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fmt.Fprintf(os.Stderr, "name parameter is required for alias replace\n")
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replacecmd.PrintDefaults()
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os.Exit(1)
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}
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if *niname == "" {
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fmt.Fprintf(os.Stderr,
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"newindex parameter is required for alias replace\n")
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replacecmd.PrintDefaults()
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os.Exit(1)
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}
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cfg := LoadConfig(*cfgpath)
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es := cfg.GetClient(*server)
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oinames := make([]string, 0, 10)
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if *oiname != "" {
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oinames = append(oinames, *oiname)
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} else {
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aliases, err := es.CatAliases().Do(context.Background())
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if err != nil {
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fmt.Fprintf(os.Stderr, "elastic error: %s\n", err.Error())
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os.Exit(1)
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}
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for _, alias := range aliases {
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if alias.Alias == *aname {
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oinames = append(oinames, alias.Index)
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}
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}
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}
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as := es.Alias()
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for _, idx := range oinames {
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as.Remove(idx, *aname)
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}
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as.Add(*niname, *aname)
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_, err := as.Do(context.Background())
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if err != nil {
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fmt.Fprintf(os.Stderr, "elastic error: %s\n", err.Error())
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os.Exit(1)
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}
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case "--help":
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printAliasUsage()
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os.Exit(0)
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default:
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fmt.Fprintf(os.Stderr, "%s: alias '%s' is not a recognized subcommand\n",
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os.Args[0], os.Args[2])
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printAliasUsage()
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os.Exit(1)
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}
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}
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func printAliasUsage() {
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fmt.Printf("Usage: %s alias <subcommand> ... \n", os.Args[0])
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fmt.Printf("See '%s alias <subcommand> --help' for information", os.Args[0])
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fmt.Printf(" on a specific command\n")
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fmt.Printf("valid subcommands:\n")
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fmt.Printf(" list list aliases\n")
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fmt.Printf(" create create alias\n")
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fmt.Printf(" delete delete alias\n")
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fmt.Printf(" replace replace alias (single step add/remove)\n")
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}
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