added datasource filtering based on datasource abilities

src/app/panels/graph/module.js

@@ -220,7 +220,7 @@ function (angular, app, $, _, kbn, moment, timeSeries) {
       $scope.editorTabs = _.pluck($scope.panelMeta.fullEditorTabs,'title');
       $scope.hiddenSeries = {};
 
-      $scope.datasources = datasourceSrv.listOptions();
+      $scope.datasources = datasourceSrv.getMetricSources();
       $scope.setDatasource($scope.panel.datasource);
 
       if ($scope.panel.targets.length === 0) {

src/app/services/datasourceSrv.js

@@ -14,6 +14,8 @@ function (angular, _, config) {
 
   module.service('datasourceSrv', function($q, filterSrv, $http, $injector) {
     var datasources = {};
+    var metricSources = [];
+    var annotationSources = [];
 
     this.init = function() {
       _.each(config.datasources, function(value, key) {
@@ -27,6 +29,23 @@ function (angular, _, config) {
         this.default = datasources[_.keys(datasources)[0]];
         this.default.default = true;
       }
+
+      // create list of different source types
+      _.each(datasources, function(value, key) {
+        if (value.supportMetrics) {
+          metricSources.push({
+            name: value.name,
+            value: value.default ? null : key,
+          });
+        }
+        if (value.supportAnnotations) {
+          annotationSources.push({
+            name: key,
+            editorSrc: value.annotationEditorSrc,
+          });
+        }
+      });
+
     };
 
     this.datasourceFactory = function(ds) {
@@ -56,25 +75,11 @@ function (angular, _, config) {
     };
 
     this.getAnnotationSources = function() {
-      var results = [];
-      _.each(datasources, function(value, key) {
-        if (value.supportAnnotations) {
-          results.push({
-            name: key,
-            editorSrc: value.annotationEditorSrc,
-          });
-        }
-      });
-      return results;
+      return annotationSources;
     };
 
-    this.listOptions = function() {
-      return _.map(config.datasources, function(value, key) {
-        return {
-          name: value.default ? key + ' (default)' : key,
-          value: value.default ? null : key
-        };
-      });
+    this.getMetricSources = function() {
+      return metricSources;
     };
 
     this.init();

src/app/services/elasticsearch/es-datasource.js

@@ -19,6 +19,7 @@ function (angular, _, $, config, kbn, moment) {
       this.url = datasource.url;
       this.name = datasource.name;
       this.supportAnnotations = true;
+      this.supportMetrics = false;
       this.index = datasource.index;
       this.annotationEditorSrc = 'app/partials/elasticsearch/annotation_editor.html';
     }

src/app/services/graphite/graphiteDatasource.js

@@ -21,6 +21,7 @@ function (angular, _, $, config, kbn, moment) {
       this.name = datasource.name;
       this.render_method = datasource.render_method || 'POST';
       this.supportAnnotations = true;
+      this.supportMetrics = true;
       this.annotationEditorSrc = 'app/partials/graphite/annotation_editor.html';
       this.cacheTimeout = datasource.cacheTimeout;
     }

src/app/services/influxdb/influxdbDatasource.js

@@ -23,6 +23,7 @@ function (angular, _, kbn, InfluxSeries) {
       };
 
       this.supportAnnotations = true;
+      this.supportMetrics = true;
       this.annotationEditorSrc = 'app/partials/influxdb/annotation_editor.html';
     }