Switch to codegangsta/cli to be inline with micro

cmd/cmd.go

@@ -1,36 +1,33 @@
 package cmd
 
 import (
-	"flag"
+	"os"
+	"text/tabwriter"
+	"text/template"
 
 	"github.com/asim/go-micro/registry"
 	"github.com/asim/go-micro/server"
 	"github.com/asim/go-micro/store"
+	"github.com/codegangsta/cli"
 )
 
 var (
-	flagBindAddress string
-	flagRegistry    string
-	flagStore       string
+	Flags = []cli.Flag{
+		cli.StringFlag{Name: "bind_address", Value: ":0", Usage: "Bind address for the server. 127.0.0.1:8080"},
+		cli.StringFlag{Name: "registry", Value: "consul", Usage: "Registry for discovery. kubernetes, consul, etc"},
+		cli.StringFlag{Name: "store", Value: "consul", Usage: "Store used as a basic key/value store using consul, memcached, etc"},
+	}
 )
 
-func init() {
-	flag.StringVar(&flagBindAddress, "bind_address", ":0", "Bind address for the server. 127.0.0.1:8080")
-	flag.StringVar(&flagRegistry, "registry", "consul", "Registry for discovery. kubernetes, consul, etc")
-	flag.StringVar(&flagStore, "store", "consul", "Store used as a basic key/value store using consul, memcached, etc")
-}
+func Setup(c *cli.Context) error {
+	server.Address = c.String("bind_address")
 
-func Init() {
-	flag.Parse()
-
-	server.Address = flagBindAddress
-
-	switch flagRegistry {
+	switch c.String("registry") {
 	case "kubernetes":
 		registry.DefaultRegistry = registry.NewKubernetesRegistry()
 	}
 
-	switch flagStore {
+	switch c.String("store") {
 	case "memcached":
 		store.DefaultStore = store.NewMemcacheStore()
 	case "memory":
@@ -38,4 +35,33 @@ func Init() {
 	case "etcd":
 		store.DefaultStore = store.NewEtcdStore()
 	}
+
+	return nil
+}
+
+func Init() {
+	cli.AppHelpTemplate = `
+GLOBAL OPTIONS:
+   {{range .Flags}}{{.}}
+   {{end}}
+`
+
+	cli.HelpPrinter = func(templ string, data interface{}) {
+		w := tabwriter.NewWriter(os.Stdout, 0, 8, 1, '\t', 0)
+		t := template.Must(template.New("help").Parse(templ))
+		err := t.Execute(w, data)
+		if err != nil {
+			panic(err)
+		}
+		w.Flush()
+		os.Exit(2)
+	}
+
+	app := cli.NewApp()
+	app.HideVersion = true
+	app.Usage = "a go micro app"
+	app.Action = func(c *cli.Context) {}
+	app.Before = Setup
+	app.Flags = Flags
+	app.RunAndExitOnError()
 }