Add addr flag

Author: srg-bnd

cmd/skill/flags.go

@@ -0,0 +1,12 @@
+package main
+
+import (
+	"flag"
+)
+
+var flagRunAddr string
+
+func parseFlags() {
+	flag.StringVar(&flagRunAddr, "a", ":8080", "address and port to run server")
+	flag.Parse()
+}

cmd/skill/main.go

@@ -1,7 +1,9 @@
 // Yandex Alice Skill
 package main
 
-import "github.com/srg-bnd/alice-skill/internal/server"
+import (
+	"github.com/srg-bnd/alice-skill/internal/server"
+)
 
 type App struct {
 	server *server.Server
@@ -14,7 +16,9 @@ func NewApp() *App {
 }
 
 func main() {
-	if err := NewApp().server.Run(); err != nil {
+	parseFlags()
+
+	if err := NewApp().server.Run(flagRunAddr); err != nil {
 		panic(err)
 	}
 }

internal/server/server.go

@@ -17,6 +17,14 @@ func NewServer() *Server {
 }
 
 // Init & run server
-func (s *Server) Run() error {
-	return http.ListenAndServe(defaultHost, http.HandlerFunc(handlers.Webhook))
+func (s *Server) Run(addr string) error {
+	return http.ListenAndServe(GetAddr(addr), http.HandlerFunc(handlers.Webhook))
+}
+
+func GetAddr(addr string) string {
+	if len(addr) != 0 {
+		return addr
+	} else {
+		return defaultHost
+	}
 }