implement replaceAlias() function, #287

dist/datasource-zabbix/dataProcessor.js

@@ -150,6 +150,17 @@ System.register(['lodash', './utils'], function (_export, _context) {
   }function setAlias(alias, timeseries) {
     timeseries.target = alias;
     return timeseries;
+  }function replaceAlias(regexp, newAlias, timeseries) {
+    var pattern = void 0;
+    if (utils.isRegex(regexp)) {
+      pattern = utils.buildRegex(regexp);
+    } else {
+      pattern = regexp;
+    }
+
+    var alias = timeseries.target.replace(pattern, newAlias);
+    timeseries.target = alias;
+    return timeseries;
   }function setAliasByRegex(alias, timeseries) {
     timeseries.target = extractText(timeseries.target, alias);
     return timeseries;
@@ -265,7 +276,8 @@ System.register(['lodash', './utils'], function (_export, _context) {
         bottom: _.partial(limit, 'bottom'),
         timeShift: timeShift,
         setAlias: setAlias,
-        setAliasByRegex: setAliasByRegex
+        setAliasByRegex: setAliasByRegex,
+        replaceAlias: replaceAlias
       };
       aggregationFunctions = {
         avg: AVERAGE,

dist/datasource-zabbix/datasource.js

@@ -334,12 +334,10 @@ System.register(['lodash', 'app/core/utils/datemath', './utils', './migrations',
               var getHistoryPromise = void 0;
 
               if (useTrends) {
-                (function () {
-                  var valueType = _this2.getTrendValueType(target);
-                  getHistoryPromise = _this2.zabbix.getTrend(items, timeFrom, timeTo).then(function (history) {
-                    return responseHandler.handleTrends(history, items, valueType);
-                  });
-                })();
+                var valueType = _this2.getTrendValueType(target);
+                getHistoryPromise = _this2.zabbix.getTrend(items, timeFrom, timeTo).then(function (history) {
+                  return responseHandler.handleTrends(history, items, valueType);
+                });
               } else {
                 // Use history
                 getHistoryPromise = _this2.zabbix.getHistory(items, timeFrom, timeTo).then(function (history) {
@@ -386,20 +384,18 @@ System.register(['lodash', 'app/core/utils/datemath', './utils', './migrations',
 
             // Apply aggregations
             if (aggregationFunctions.length) {
-              (function () {
-                var dp = _.map(timeseries_data, 'datapoints');
-                dp = sequence(aggregationFunctions)(dp);
+              var dp = _.map(timeseries_data, 'datapoints');
+              dp = sequence(aggregationFunctions)(dp);
 
-                var aggFuncNames = _.map(metricFunctions.getCategories()['Aggregate'], 'name');
-                var lastAgg = _.findLast(target.functions, function (func) {
-                  return _.includes(aggFuncNames, func.def.name);
-                });
+              var aggFuncNames = _.map(metricFunctions.getCategories()['Aggregate'], 'name');
+              var lastAgg = _.findLast(target.functions, function (func) {
+                return _.includes(aggFuncNames, func.def.name);
+              });
 
-                timeseries_data = [{
-                  target: lastAgg.text,
-                  datapoints: dp
-                }];
-              })();
+              timeseries_data = [{
+                target: lastAgg.text,
+                datapoints: dp
+              }];
             }
 
             // Apply alias functions
@@ -419,12 +415,10 @@ System.register(['lodash', 'app/core/utils/datemath', './utils', './migrations',
               return func.def.name === 'timeShift';
             });
             if (timeShiftFunc) {
-              (function () {
-                var shift = timeShiftFunc.params[0];
-                _.forEach(timeseries_data, function (series) {
-                  series.datapoints = dataProcessor.unShiftTimeSeries(shift, series.datapoints);
-                });
-              })();
+              var shift = timeShiftFunc.params[0];
+              _.forEach(timeseries_data, function (series) {
+                series.datapoints = dataProcessor.unShiftTimeSeries(shift, series.datapoints);
+              });
             }
           }
         }, {

dist/datasource-zabbix/metricFunctions.js

@@ -211,6 +211,13 @@ System.register(['lodash', 'jquery'], function (_export, _context) {
         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');
       });

dist/test/datasource-zabbix/dataProcessor.js

@@ -181,6 +181,19 @@ function setAlias(alias, timeseries) {
   return timeseries;
 }
 
+function replaceAlias(regexp, newAlias, timeseries) {
+  var pattern = void 0;
+  if (utils.isRegex(regexp)) {
+    pattern = utils.buildRegex(regexp);
+  } else {
+    pattern = regexp;
+  }
+
+  var alias = timeseries.target.replace(pattern, newAlias);
+  timeseries.target = alias;
+  return timeseries;
+}
+
 function setAliasByRegex(alias, timeseries) {
   timeseries.target = extractText(timeseries.target, alias);
   return timeseries;
@@ -315,7 +328,8 @@ var metricFunctions = {
   bottom: _lodash2.default.partial(limit, 'bottom'),
   timeShift: timeShift,
   setAlias: setAlias,
-  setAliasByRegex: setAliasByRegex
+  setAliasByRegex: setAliasByRegex,
+  replaceAlias: replaceAlias
 };
 
 var aggregationFunctions = {

dist/test/datasource-zabbix/datasource.js

@@ -192,12 +192,10 @@ var ZabbixAPIDatasource = function () {
         var getHistoryPromise = void 0;
 
         if (useTrends) {
-          (function () {
-            var valueType = _this2.getTrendValueType(target);
-            getHistoryPromise = _this2.zabbix.getTrend(items, timeFrom, timeTo).then(function (history) {
-              return _responseHandler2.default.handleTrends(history, items, valueType);
-            });
-          })();
+          var valueType = _this2.getTrendValueType(target);
+          getHistoryPromise = _this2.zabbix.getTrend(items, timeFrom, timeTo).then(function (history) {
+            return _responseHandler2.default.handleTrends(history, items, valueType);
+          });
         } else {
           // Use history
           getHistoryPromise = _this2.zabbix.getHistory(items, timeFrom, timeTo).then(function (history) {
@@ -244,20 +242,18 @@ var ZabbixAPIDatasource = function () {
 
       // Apply aggregations
       if (aggregationFunctions.length) {
-        (function () {
-          var dp = _lodash2.default.map(timeseries_data, 'datapoints');
-          dp = sequence(aggregationFunctions)(dp);
+        var dp = _lodash2.default.map(timeseries_data, 'datapoints');
+        dp = sequence(aggregationFunctions)(dp);
 
-          var aggFuncNames = _lodash2.default.map(metricFunctions.getCategories()['Aggregate'], 'name');
-          var lastAgg = _lodash2.default.findLast(target.functions, function (func) {
-            return _lodash2.default.includes(aggFuncNames, func.def.name);
-          });
+        var aggFuncNames = _lodash2.default.map(metricFunctions.getCategories()['Aggregate'], 'name');
+        var lastAgg = _lodash2.default.findLast(target.functions, function (func) {
+          return _lodash2.default.includes(aggFuncNames, func.def.name);
+        });
 
-          timeseries_data = [{
-            target: lastAgg.text,
-            datapoints: dp
-          }];
-        })();
+        timeseries_data = [{
+          target: lastAgg.text,
+          datapoints: dp
+        }];
       }
 
       // Apply alias functions
@@ -277,12 +273,10 @@ var ZabbixAPIDatasource = function () {
         return func.def.name === 'timeShift';
       });
       if (timeShiftFunc) {
-        (function () {
-          var shift = timeShiftFunc.params[0];
-          _lodash2.default.forEach(timeseries_data, function (series) {
-            series.datapoints = _dataProcessor2.default.unShiftTimeSeries(shift, series.datapoints);
-          });
-        })();
+        var shift = timeShiftFunc.params[0];
+        _lodash2.default.forEach(timeseries_data, function (series) {
+          series.datapoints = _dataProcessor2.default.unShiftTimeSeries(shift, series.datapoints);
+        });
       }
     }
   }, {

dist/test/datasource-zabbix/metricFunctions.js

@@ -174,6 +174,13 @@ addFuncDef({
   defaultParams: []
 });
 
+addFuncDef({
+  name: 'replaceAlias',
+  category: 'Alias',
+  params: [{ name: 'regexp', type: 'string' }, { name: 'newAlias', type: 'string' }],
+  defaultParams: ['/(.*)/', '$1']
+});
+
 _lodash2.default.each(categories, function (funcList, catName) {
   categories[catName] = _lodash2.default.sortBy(funcList, 'name');
 });

docs/sources/reference/functions.md

@@ -158,3 +158,35 @@ Examples:
 ```
 setAlias(Zabbix busy [a-zA-Z]+)
 ```
+
+### replaceAlias
+```
+replaceAlias(pattern, newAlias)
+```
+
+Replace metric name using pattern. Pattern is regex or regular string. If regex is used, following special replacement patterns are supported:
+
+|Pattern	| Inserts|
+----------|---------
+|$$	| Inserts a "$". |
+|$&	| Inserts the matched substring. |
+|$`	| Inserts the portion of the string that precedes the matched substring. |
+|$'	| Inserts the portion of the string that follows the matched substring. |
+|$n	| Where n is a non-negative integer less than 100, inserts the nth parenthesized submatch string, provided the first argument was a RegExp object. |
+
+For more detais see [String.prototype.replace()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace) function.
+
+Examples:
+```
+CPU system time
+replaceAlias(/CPU (.*) time/, $1) -> system
+
+backend01: CPU system time
+replaceAlias(/CPU (.*) time/, $1) -> backend01: system
+
+backend01: CPU system time
+replaceAlias(/.*CPU (.*) time/, $1) -> system
+
+backend01: CPU system time
+replaceAlias(/(.*): CPU (.*) time/, $1 - $2) -> backend01 - system
+```

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 = {

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');
 });