sync the change from kubeedge in 2.20

Signed-off-by: wbc6080 <wangbincheng4@huawei.com>

_template/mapper/cmd/main.go

@@ -43,7 +43,7 @@ func main() {
 	go panel.DevStart()
 
 	// start http server
-	httpServer := httpserver.NewRestServer(panel)
+	httpServer := httpserver.NewRestServer(panel, c.Common.HTTPPort)
 	go httpServer.StartServer()
 
 	// start grpc server

pkg/config/config.go

@@ -44,6 +44,7 @@ type Common struct {
 	Protocol     string `yaml:"protocol"`
 	Address      string `yaml:"address"`
 	EdgeCoreSock string `yaml:"edgecore_sock"`
+	HTTPPort     string `yaml:"http_port"`
 }
 
 // Parse the configuration file. If failed, return error.

pkg/httpserver/server.go

@@ -30,10 +30,14 @@ type RestServer struct {
 
 type Option func(server *RestServer)
 
-func NewRestServer(devPanel global.DevPanel, options ...Option) *RestServer {
+func NewRestServer(devPanel global.DevPanel, httpPort string, options ...Option) *RestServer {
+	if httpPort == "" {
+		httpPort = "7777"
+	}
+
 	rest := &RestServer{
 		IP:           "0.0.0.0",
-		Port:         "7777",
+		Port:         httpPort,
 		Router:       mux.NewRouter(),
 		WriteTimeout: 10 * time.Second,
 		ReadTimeout:  10 * time.Second,