fix regex-based text filter

src/datasource-zabbix/datasource.js

@@ -291,7 +291,7 @@ class ZabbixAPIDatasource {
           return this.zabbix.getHistory(items, timeFrom, timeTo)
           .then(history => {
             if (target.resultFormat === 'table') {
-              return responseHandler.handleHistoryAsTable(history, items);
+              return responseHandler.handleHistoryAsTable(history, items, target);
             } else {
               return responseHandler.handleText(history, items, target);
             }

src/datasource-zabbix/responseHandler.js

@@ -54,7 +54,7 @@ function handleText(history, items, target, addHostName = true) {
   return convertHistory(history, items, addHostName, convertTextCallback);
 }
 
-function handleHistoryAsTable(history, items) {
+function handleHistoryAsTable(history, items, target) {
   let table = new TableModel();
   table.addColumn({text: 'Host'});
   table.addColumn({text: 'Item'});
@@ -66,6 +66,12 @@ function handleHistoryAsTable(history, items) {
     let itemHistory = grouped_history[item.itemid] || [];
     let lastPoint = _.last(itemHistory);
     let lastValue = lastPoint ? lastPoint.value : null;
+
+    // Regex-based extractor
+    if (target.textFilter) {
+      lastValue = extractText(lastValue, target.textFilter, target.useCaptureGroups);
+    }
+
     let host = _.first(item.hosts);
     host = host ? host.name : "";
 

src/datasource-zabbix/specs/datasource.spec.js

@@ -123,6 +123,8 @@ describe('ZabbixDatasource', () => {
             host: {filter: "Zabbix server"},
             application: {filter: ""},
             item: {filter: "System information"},
+            textFilter: "",
+            useCaptureGroups: true,
             mode: 2,
             resultFormat: "table"
           }
@@ -145,13 +147,11 @@ describe('ZabbixDatasource', () => {
       });
     });
 
-    it('should extract value if regex is specified', (done) => {
+    it('should extract value if regex with capture group is used', (done) => {
       ctx.options.targets[0].textFilter = "Linux (.*)";
       ctx.ds.query(ctx.options).then(result => {
         let tableData = result.data[0];
-        expect(tableData.rows).toEqual([
-          ['Zabbix server', 'System information', 'system.uname', 'last']
-        ]);
+        expect(tableData.rows[0][3]).toEqual('last');
         done();
       });
     });