implement replaceAlias() function, #287

src/datasource-zabbix/dataProcessor.js

@@ -168,6 +168,19 @@ function setAlias(alias, timeseries) {
   return timeseries;
 }
 
+function replaceAlias(regexp, newAlias, timeseries) {
+  let pattern;
+  if (utils.isRegex(regexp)) {
+    pattern = utils.buildRegex(regexp);
+  } else {
+    pattern = regexp;
+  }
+
+  let alias = timeseries.target.replace(pattern, newAlias);
+  timeseries.target = alias;
+  return timeseries;
+}
+
 function setAliasByRegex(alias, timeseries) {
   timeseries.target = extractText(timeseries.target, alias);
   return timeseries;
@@ -308,7 +321,8 @@ let metricFunctions = {
   bottom: _.partial(limit, 'bottom'),
   timeShift: timeShift,
   setAlias: setAlias,
-  setAliasByRegex: setAliasByRegex
+  setAliasByRegex: setAliasByRegex,
+  replaceAlias: replaceAlias
 };
 
 let aggregationFunctions = {
@@ -338,4 +352,4 @@ export default {
   get metricFunctions() {
     return metricFunctions;
   }
-};
+};

src/datasource-zabbix/metricFunctions.js

@@ -187,6 +187,16 @@ addFuncDef({
   defaultParams: []
 });
 
+addFuncDef({
+  name: 'replaceAlias',
+  category: 'Alias',
+  params: [
+    { name: 'regexp', type: 'string' },
+    { name: 'newAlias', type: 'string' }
+  ],
+  defaultParams: ['/(.*)/', '$1']
+});
+
 _.each(categories, function(funcList, catName) {
   categories[catName] = _.sortBy(funcList, 'name');
 });