optimize file tree loading ⚡

file/files.go

@@ -69,7 +69,7 @@ func initAPINode() {
 // so that users can easily view the Go API source code in file tree.
 func GetFiles(w http.ResponseWriter, r *http.Request) {
 	data := map[string]interface{}{"succ": true}
-	defer util.RetJSON(w, r, data)
+	defer util.RetGzJSON(w, r, data)
 
 	session, _ := session.HTTPSession.Get(r, "wide-session")
 	if session.IsNew {

util/ret.go

@@ -15,6 +15,7 @@
 package util
 
 import (
+	"compress/gzip"
 	"encoding/json"
 	"net/http"
 
@@ -33,3 +34,23 @@ func RetJSON(w http.ResponseWriter, r *http.Request, res map[string]interface{})
 
 	w.Write(data)
 }
+
+// RetGzJSON writes HTTP response with "Content-Type, application/json".
+func RetGzJSON(w http.ResponseWriter, r *http.Request, res map[string]interface{}) {
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Content-Encoding", "gzip")
+
+	gz := gzip.NewWriter(w)
+	err := json.NewEncoder(gz).Encode(res)
+	if nil != err {
+		glog.Error(err)
+		return
+	}
+
+	err = gz.Close()
+	if nil != err {
+		glog.Error(err)
+
+		return
+	}
+}