Feature command

otelcol/command.go

@@ -6,6 +6,9 @@
 import (
 	"errors"
 	"flag"
+	"fmt"
+	"os"
+	"text/tabwriter"
 
 	"github.com/spf13/cobra"
 
@@ -36,6 +39,7 @@
 			return col.Run(cmd.Context())
 		},
 	}
+	rootCmd.AddCommand(newFeaturesCommand())
 	rootCmd.AddCommand(newComponentsCommand(set))
 	rootCmd.AddCommand(newValidateSubCommand(set, flagSet))
 	rootCmd.Flags().AddGoFlagSet(flagSet)
@@ -63,3 +67,44 @@
 	}
 	return nil
 }
+
+func newFeaturesCommand() *cobra.Command {
+	return &cobra.Command{
+		Use:   "features [feature-id]",
+		Short: "Display feature gates information",
+		Long:  "Display information about available feature gates and their status",
+		RunE: func(_ *cobra.Command, args []string) error {
+			if len(args) > 0 {
+				found := false
+				featuregate.GlobalRegistry().VisitAll(func(g *featuregate.Gate) {
+					if g.ID() == args[0] {
+						found = true
+						fmt.Printf("Feature: %s\n", g.ID())
+						fmt.Printf("Enabled: %v\n", g.IsEnabled())
+						fmt.Printf("Stage: %s\n", g.Stage())
+						fmt.Printf("Description: %s\n", g.Description())
+						fmt.Printf("From Version: %s\n", g.FromVersion())
+						if g.ToVersion() != "" {
+							fmt.Printf("To Version: %s\n", g.ToVersion())
+						}
+					}
+				})
+				if !found {
+					return fmt.Errorf("feature %q not found", args[0])
+				}
+				return nil
+			}
+
+			w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
+			fmt.Fprintf(w, "ID\tEnabled\tStage\tDescription\n")
+			featuregate.GlobalRegistry().VisitAll(func(g *featuregate.Gate) {
+				fmt.Fprintf(w, "%s\t%v\t%s\t%s\n",
+					g.ID(),
+					g.IsEnabled(),
+					g.Stage(),
+					g.Description())
+			})
+			return w.Flush()
+		},
+	}
+}