Display sorted metadata keys in rule nodes

@@ -150,7 +150,8 @@ function Utils($mdColorPalette, $rootScope, $window, $translate, $q, $timeout, t
         customTranslation: customTranslation,
         objToBase64: objToBase64,
         base64toObj: base64toObj,
-        loadImageAspect: loadImageAspect
+        loadImageAspect: loadImageAspect,
+        sortObjectKeys: sortObjectKeys
     }
 
     return service;
@@ -605,4 +606,14 @@ function Utils($mdColorPalette, $rootScope, $window, $translate, $q, $timeout, t
         return deferred.promise;
     }
 
+    function sortObjectKeys(obj) {
+        var sortedObj = {};
+        var keys = Object.keys(obj).sort();
+        for (var i = 0; i < keys.length; i++) {
+            var key = keys[i];
+            sortedObj[key] = obj[key];
+        }
+        return sortedObj;
+    }
+
 }

@@ -25,7 +25,7 @@ import eventRowDebugRuleNodeTemplate from './event-row-debug-rulenode.tpl.html';
 /* eslint-enable import/no-unresolved, import/default */
 
 /*@ngInject*/
-export default function EventRowDirective($compile, $templateCache, $mdDialog, $document, types) {
+export default function EventRowDirective($compile, $templateCache, $mdDialog, $document, types, utils) {
 
     var linker = function (scope, element, attrs) {
 
@@ -71,11 +71,18 @@ export default function EventRowDirective($compile, $templateCache, $mdDialog, $
             if (!contentType) {
                 contentType = null;
             }
+            var sortedContent;
+            try {
+                sortedContent = angular.toJson(utils.sortObjectKeys(angular.fromJson(content)));
+            }
+            catch(err) {
+                sortedContent = content;
+            }
             $mdDialog.show({
                 controller: 'EventContentDialogController',
                 controllerAs: 'vm',
                 templateUrl: eventErrorDialogTemplate,
-                locals: {content: content, title: title, contentType: contentType, showingCallback: onShowingCallback},
+                locals: {content: sortedContent, title: title, contentType: contentType, showingCallback: onShowingCallback},
                 parent: angular.element($document[0].body),
                 fullscreen: true,
                 targetEvent: $event,

@@ -20,7 +20,7 @@ import nodeScriptTestTemplate from './node-script-test.tpl.html';
 /* eslint-enable import/no-unresolved, import/default */
 
 /*@ngInject*/
-export default function NodeScriptTest($q, $mdDialog, $document, ruleChainService) {
+export default function NodeScriptTest($q, $mdDialog, $document, ruleChainService, utils) {
 
     var service = {
         testNodeScript: testNodeScript
@@ -89,6 +89,8 @@ export default function NodeScriptTest($q, $mdDialog, $document, ruleChainServic
                 deviceName: "Test Device",
                 ts: new Date().getTime() + ""
             };
+        } else {
+            metadata = utils.sortObjectKeys(metadata);
         }
         if (!msgType) {
             msgType = "POST_TELEMETRY_REQUEST";