Add buildinfo flag

main.go

@@ -86,6 +86,7 @@ Profiling Options:
 Common Options:
     -h, --help                       Show this message
     -v, --version                    Show version
+        --buildinfo                  Show buildinfo
         --help_tls                   TLS help
 `
 

server/opts.go

@@ -5680,6 +5680,7 @@ func ConfigureOptions(fs *flag.FlagSet, args []string, printVersion, printHelp,
 	opts := &Options{}
 	var (
 		showVersion            bool
+		showBuildInfo          bool
 		showHelp               bool
 		showTLSHelp            bool
 		signal                 string
@@ -5735,6 +5736,7 @@ func ConfigureOptions(fs *flag.FlagSet, args []string, printVersion, printHelp,
 	fs.StringVar(&opts.RemoteSyslog, "remote_syslog", _EMPTY_, "Syslog server addr (udp://127.0.0.1:514).")
 	fs.BoolVar(&showVersion, "version", false, "Print version information.")
 	fs.BoolVar(&showVersion, "v", false, "Print version information.")
+	fs.BoolVar(&showBuildInfo, "buildinfo", false, "Print buildinfo.")
 	fs.IntVar(&opts.ProfPort, "profile", 0, "Profiling HTTP port.")
 	fs.StringVar(&opts.RoutesStr, "routes", _EMPTY_, "Routes to actively solicit a connection.")
 	fs.StringVar(&opts.Cluster.ListenStr, "cluster", _EMPTY_, "Cluster url from which members can solicit routes.")
@@ -5772,6 +5774,11 @@ func ConfigureOptions(fs *flag.FlagSet, args []string, printVersion, printHelp,
 		return nil, nil
 	}
 
+	if showBuildInfo {
+		PrintBuildinfoAndExit()
+		return nil, nil
+	}
+
 	if showHelp {
 		printHelp()
 		return nil, nil

server/server.go

@@ -33,6 +33,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"runtime"
+	"runtime/debug"
 	"runtime/pprof"
 	"strconv"
 	"strings"
@@ -1583,6 +1584,18 @@ func PrintServerAndExit() {
 	os.Exit(0)
 }
 
+// PrintBuildinfoAndExit will print out https://pkg.go.dev/runtime/debug#BuildInfo and exit.
+func PrintBuildinfoAndExit() {
+	bi, ok := debug.ReadBuildInfo()
+	if !ok || bi == nil {
+		//nolint:forbidigo
+		fmt.Println("failed to read Buildinfo")
+	}
+	//nolint:forbidigo
+	fmt.Println(bi)
+	os.Exit(0)
+}
+
 // ProcessCommandLineArgs takes the command line arguments
 // validating and setting flags for handling in case any
 // sub command was present.