Full

Signed-off-by: cs-308-2023 <[email protected]>

cmd/jaeger/internal/features/display.go

@@ -0,0 +1,31 @@
+// Copyright (c) 2025 The Jaeger Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package features
+
+import (
+	"fmt"
+
+	"go.opentelemetry.io/collector/featuregate"
+)
+
+func DisplayFeatures() {
+	f := featuregate.GlobalRegistry()
+	if f == nil {
+		return
+	}
+	f.VisitAll(func(g *featuregate.Gate) {
+		fmt.Printf("Feature:\t%s\n", g.ID())
+		if !g.IsEnabled() {
+			fmt.Printf("Default state:\t%s\n", "On")
+		} else {
+			fmt.Printf("Default state:\t%s\n", "Off")
+		}
+		fmt.Printf("Description:\t%s\n", g.Description())
+
+		if ref := g.ReferenceURL(); ref != "" {
+			fmt.Printf("ReferenceURL:\t%s\n", ref)
+		}
+		fmt.Println()
+	})
+}

cmd/jaeger/main.go

@@ -6,10 +6,12 @@ package main
 import (
 	"log"
 
+	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 
 	"github.com/jaegertracing/jaeger/cmd/internal/docs"
 	"github.com/jaegertracing/jaeger/cmd/jaeger/internal"
+	"github.com/jaegertracing/jaeger/cmd/jaeger/internal/features"
 	"github.com/jaegertracing/jaeger/pkg/config"
 	"github.com/jaegertracing/jaeger/pkg/version"
 )
@@ -19,6 +21,8 @@ func main() {
 	command := internal.Command()
 	command.AddCommand(version.Command())
 	command.AddCommand(docs.Command(v))
+	command.AddCommand(featuresCommand())
+
 	config.AddFlags(
 		v,
 		command,
@@ -28,3 +32,14 @@ func main() {
 		log.Fatal(err)
 	}
 }
+
+func featuresCommand() *cobra.Command {
+	return &cobra.Command{
+		Use:   "features",
+		Short: "Displays the list of supported features",
+		Long:  "The 'features' command shows all supported features in the current build of Jaeger.",
+		Run: func(_ *cobra.Command, _ []string) {
+			features.DisplayFeatures()
+		},
+	}
+}