added enlapsed time to make the query on document.

client/coffee/controllers/documentCtrl.coffee

@@ -25,6 +25,7 @@ root.controllers.controller('documentCtrl', ['$scope', '$routeParams', '$locatio
     util.get(url).then((res) ->
          $scope.doc = res.data.document
          $scope.meta = res.data.meta
+         $scope.enlapsed_time = res.data.enlapsed_time
     ).catch( (res) ->
         if res.data.error == "not found"
             $scope.notfound = true

client/partials/document.html

@@ -41,3 +41,8 @@
         
     </div>
 </div>
+<div class="row" ng-show="enlapsed_time">
+    <div class="columns large-12" style="text-align: center;">
+        took {{enlapsed_time}} seconds
+    </div>
+</div>

handlerWrapper.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"log"
 	"net/http"
+	"time"
 )
 
 type errorWrapper struct {
@@ -12,9 +13,17 @@ type errorWrapper struct {
 
 type ApiHandler func(w http.ResponseWriter, request *http.Request) (interface{}, error)
 
+func (this ApiHandler) addEnlapsedTimeIfPossible(enlapsedTime time.Duration, obj interface{}) {
+	if dict, ok := obj.(map[string]interface{}); ok {
+		dict["enlapsed_time"] = enlapsedTime.Seconds()
+	}
+
+}
 func (this ApiHandler) ServeHTTP(w http.ResponseWriter, request *http.Request) {
 	log.Println("request for", request.URL)
+	t := time.Now()
 	ret, err := this(w, request)
+	this.addEnlapsedTimeIfPossible(time.Since(t), ret)
 	if err != nil {
 		log.Println(err)
 		ret = &errorWrapper{err.Error()}