refactor: db connectors

src/datasource-zabbix/zabbix/connectors/dbConnector.js

@@ -0,0 +1,38 @@
+import _ from 'lodash';
+
+const NOT_IMPLEMENTED = 'Method should be implemented in subclass of DBConnector';
+
+export default class DBConnector {
+  constructor(options, backendSrv, datasourceSrv) {
+    this.backendSrv = backendSrv;
+    this.datasourceSrv = datasourceSrv;
+    this.datasourceId = options.datasourceId;
+    this.datasourceName = options.datasourceName;
+    this.datasourceType = null;
+  }
+
+  loadDBDataSource() {
+    let ds = _.find(this.datasourceSrv.getAll(), {'id': this.datasourceId});
+    if (ds) {
+      return this.datasourceSrv.loadDatasource(ds.name)
+      .then(ds => {
+        this.datasourceType = ds.meta.id;
+        return ds;
+      });
+    } else {
+      return Promise.reject(`SQL Data Source with ID ${this.datasourceId} not found`);
+    }
+  }
+
+  testDataSource() {
+    throw NOT_IMPLEMENTED;
+  }
+
+  getHistory() {
+    throw NOT_IMPLEMENTED;
+  }
+
+  getTrends() {
+    throw NOT_IMPLEMENTED;
+  }
+}