dev

cmd/gost/main.go

@@ -23,6 +23,7 @@ var (
 	services     stringList
 	nodes        stringList
 	debug        bool
+	showConfig   bool
 	apiAddr      string
 	metricsAddr  string
 )
@@ -78,6 +79,7 @@ func init() {
 	flag.BoolVar(&printVersion, "V", false, "print version")
 	flag.StringVar(&outputFormat, "O", "", "output format, one of yaml|json format")
 	flag.BoolVar(&debug, "D", false, "debug mode")
+	flag.BoolVar(&showConfig, "P", false, "print config only")
 	flag.StringVar(&apiAddr, "api", "", "api service address")
 	flag.StringVar(&metricsAddr, "metrics", "", "metrics service address")
 	flag.Parse()

cmd/gost/program.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"fmt"
+	"gopkg.in/yaml.v2"
 	"net/http"
 	"os"
 
@@ -93,6 +95,13 @@ func (p *program) Start() error {
 	log := logger.Default()
 	cfg := config.Global()
 
+	if showConfig {
+		marshal, _ := yaml.Marshal(cfg)
+		fmt.Println(string(marshal))
+		os.Exit(0)
+		return nil
+	}
+
 	if cfg.API != nil {
 		s, err := buildAPIService(cfg.API)
 		if err != nil {