feat(templating): progress on template system rewrite #6048

public/app/features/templating/datasource_variable.ts

@@ -0,0 +1,56 @@
+///<reference path="../../headers/common.d.ts" />
+
+import _ from 'lodash';
+import kbn from 'app/core/utils/kbn';
+import {Variable} from './variable';
+import {VariableSrv, variableConstructorMap} from './variable_srv';
+
+export class DatasourceVariable implements Variable {
+  regex: any;
+  query: string;
+  options: any;
+
+  /** @ngInject */
+  constructor(private model, private datasourceSrv) {
+    _.extend(this, model);
+  }
+
+  setValue(option) {
+  }
+
+  updateOptions() {
+    var options = [];
+    var sources = this.datasourceSrv.getMetricSources({skipVariables: true});
+    var regex;
+
+    if (this.regex) {
+      regex = kbn.stringToJsRegex(this.regex);
+    }
+
+    for (var i = 0; i < sources.length; i++) {
+      var source = sources[i];
+      // must match on type
+      if (source.meta.id !== this.query) {
+        continue;
+      }
+
+      if (regex && !regex.exec(source.name)) {
+        continue;
+      }
+
+      options.push({text: source.name, value: source.name});
+    }
+
+    if (options.length === 0) {
+      options.push({text: 'No data sources found', value: ''});
+    }
+
+    this.options = options;
+  }
+
+  dependsOn(variableName) {
+    return false;
+  }
+}
+
+variableConstructorMap['datasource'] = DatasourceVariable;