add -p -t -D flags to cluster settings ls (#10)

cmd/cluster.go

@@ -140,6 +140,27 @@ func ClusterSettingsList(conf *cfg.Config) *cli.Command {
 		Usage:   "show cluster settings",
 		Aliases: []string{"ls", "get"},
 
+		Flags: []cli.Flag{
+			&cli.BoolFlag{
+				Name:        "persistent",
+				Usage:       "only show persistent setting[s] (default)",
+				Destination: &conf.Persistent,
+				Aliases:     []string{"p"},
+			},
+			&cli.BoolFlag{
+				Name:        "transient",
+				Usage:       "only show transient setting[s]",
+				Destination: &conf.Transient,
+				Aliases:     []string{"t"},
+			},
+			&cli.BoolFlag{
+				Name:        "default",
+				Usage:       "only show default setting[s]",
+				Destination: &conf.Default,
+				Aliases:     []string{"D"},
+			},
+		},
+
 		Action: func(ctx context.Context, cmd *cli.Command) error {
 			if err := es.ClusterSettingsList(conf); err != nil {
 				return err

pkg/cfg/config.go

@@ -52,7 +52,7 @@ type Config struct {
 	Filter                         []string // search: -F
 	Exclude                        string   // cluster compare: -e (regexp)
 	All                            bool     // cluster status: -a
-	Persistent, Transient bool     // -p -t cluster settings set
+	Persistent, Transient, Default bool     // -p -t -D cluster settings set
 }
 
 func NewConfig() *Config {

pkg/es/cluster.go

@@ -147,7 +147,16 @@ func ClusterSettingsList(conf *cfg.Config) error {
 	table.Addheaders("setting", "value")
 	entries := [][]string{}
 
-	for topic, val := range res.Persistent {
+	settingshash := res.Persistent // == map[string]json.RawMessage
+
+	switch {
+	case conf.Transient:
+		settingshash = res.Transient
+	case conf.Default:
+		settingshash = res.Defaults
+	}
+
+	for topic, val := range settingshash {
 		data := map[string]map[string]any{}
 
 		err := json.Unmarshal(val, &data)