added test query feature to grafana datasource to generate a test graph on first login

src/app/features/all.js

@@ -9,4 +9,5 @@ define([
   './dashboard/all',
   './admin/accountCtrl',
   './admin/datasourcesCtrl',
+  './grafanaDatasource/datasource',
 ], function () {});

src/app/services/grafanaDatasource.js → src/app/features/grafanaDatasource/datasource.js

 define([
   'angular',
   'lodash',
+  'kbn',
 ],
-function (angular, _) {
+function (angular, _, kbn) {
   'use strict';
 
   var module = angular.module('grafana.services');
@@ -12,6 +13,9 @@ function (angular, _) {
     function GrafanaDatasource() {
       this.type = 'grafana';
       this.grafanaDB = true;
+      this.name = "grafana";
+      this.supportMetrics = true;
+      this.editorSrc = 'app/features/grafanaDatasource/partials/query.editor.html';
     }
 
     GrafanaDatasource.prototype.getDashboard = function(id, isTemp) {
@@ -31,6 +35,14 @@ function (angular, _) {
         });
     };
 
+    GrafanaDatasource.prototype.query = function(options) {
+      // get from & to in seconds
+      var from = kbn.parseDate(options.range.from).getTime();
+      var to = kbn.parseDate(options.range.to).getTime();
+
+      return backendSrv.get('/api/metrics/test', { from: from, to: to, maxDataPoints: options.maxDataPoints });
+    };
+
     GrafanaDatasource.prototype.saveDashboard = function(dashboard) {
       // remove id if title has changed
       if (dashboard.title !== dashboard.originalTitle) {

src/app/features/grafanaDatasource/partials/query.editor.html

+
+<div class="fluid-row" style="margin-top: 20px">
+	<div class="span2"></div>
+	<div class="grafana-info-box span8">
+		<h5>Test graph</h5>
+
+		<p>
+		This is just a test data source that generates random walk series. If this is your only data source
+		open the left side menu and goto data sources admin screen and add your data sources. You can change
+		data source using the button to the left of the <strong>Add query</strong> button.
+		</p>
+	</div>
+	<div class="span2"></div>
+
+	<div class="clearfix"></div>
+</div>
+

src/app/services/all.js

@@ -6,6 +6,5 @@ define([
   './keyboardManager',
   './popoverSrv',
   './backendSrv',
-  './grafanaDatasource',
 ],
 function () {});

src/app/services/backendSrv.js

@@ -10,8 +10,8 @@ function (angular, _, config) {
 
   module.service('backendSrv', function($http, alertSrv) {
 
-    this.get = function(url) {
-      return this.request({ method: 'GET', url: url });
+    this.get = function(url, params) {
+      return this.request({ method: 'GET', url: url, params: params });
     };
 
     this.delete = function(url) {
@@ -30,7 +30,8 @@ function (angular, _, config) {
       var httpOptions = {
         url: config.appSubUrl + options.url,
         method: options.method,
-        data: options.data
+        data: options.data,
+        params: options.params,
       };
 
       return $http(httpOptions).then(function(results) {
@@ -54,7 +55,7 @@ function (angular, _, config) {
         }
 
         if (data.message) {
-          alertSrv.set("Error", data.message, data.severity, 10000);
+          alertSrv.set("Problem!", data.message, data.severity, 10000);
         }
 
         throw data;