Some night refactoring.

zabbix/datasource.js

@@ -36,33 +36,29 @@ function (angular, _, kbn) {
       var from = kbn.parseDate(options.range.from).getTime();
       var to = kbn.parseDate(options.range.to).getTime();
 
-      // Remove undefined and hidden targets
-      var displayedTargets = _.filter(options.targets, function (target) {
-        return (!target.hide && target.item);
-      });
-
-      if (displayedTargets.length) {
-        // Extract zabbix api item objects from targets
-        var target_items = _.map(displayedTargets, 'item');
-      } else {
-        // No valid targets, return the empty dataset
-        var d = $q.defer();
-        d.resolve({ data: [] });
-        return d.promise;
-      }
-
       from = Math.ceil(from/1000);
       to = Math.ceil(to/1000);
 
+      var promises = _.map(options.targets, function(target) {
+        // Remove undefined and hidden targets
+        if (target.hide || !target.item) {
+          return [];
+        }
+
         var self = this;
-      return this.performTimeSeriesQuery(target_items, from, to).then(function (response) {
-        return self.handleZabbixAPIResponse(response, displayedTargets)
+        return this.performTimeSeriesQuery(target.item, from, to).then(function (response) {
+          return self.handleZabbixAPIResponse(response, target)
+        });
+      }, this);
+
+      return $q.all(promises).then(function(results) {
+        return { data: _.flatten(results) };
       });
     };
 
 
     // Request data from Zabbix API
-    ZabbixAPIDatasource.prototype.handleZabbixAPIResponse = function(response, targets) {
+    ZabbixAPIDatasource.prototype.handleZabbixAPIResponse = function(response, target) {
       /**
        * Response should be in the format:
        * data: [
@@ -77,26 +73,11 @@ function (angular, _, kbn) {
        *       ]
        */
 
-      // Index returned datapoints by item/metric id
-      var indexed_result = _.groupBy(response, 'itemid');
-
-      // Sort result as the same as targets
-      // for display stacked timeseries in proper order
-      var sorted_history = _.sortBy(indexed_result, function (value, key, list) {
-        return _.indexOf(_.map(targets, function (target) {
-          return target.item.itemid;
-        }), key);
-      });
-
-      var series = _.map(sorted_history,
-        // Foreach itemid index: iterate over the data points and
-        // normalize to Grafana response format.
-        function (history, index) {
-          return {
+      var series = {
         // Lookup itemid:alias map
-            target: targets[index].alias,
+        target: target.alias,
 
-            datapoints: _.map(history, function (p) {
+        datapoints: _.map(response, function (p) {
 
           // Value must be a number for properly work
           var value = Number(p.value);
@@ -106,8 +87,8 @@ function (angular, _, kbn) {
           return [value, p.clock * 1000];
         })
       };
-        })
-      return $q.when({data: series});
+
+      return $q.when(series);
     };
 
 
@@ -152,30 +133,19 @@ function (angular, _, kbn) {
      * @param items: array of zabbix api item objects
      */
     ZabbixAPIDatasource.prototype.performTimeSeriesQuery = function(items, start, end) {
-
-      // Group items by value type for separate requests
-      var items_by_value_type = _.groupBy(items, 'value_type');
-
-      var self = this;
-      var apiRequests = [];
-
-      // Prepare requests for each value type
-      _.each(items_by_value_type, function (value, key, list) {
-        var item_ids = _.map(value, 'itemid');
-        var history_type = key;
       var data = {
         jsonrpc: '2.0',
         method: 'history.get',
         params: {
           output: 'extend',
-            history: history_type,
-            itemids: item_ids,
+          history: items.value_type,
+          itemids: items.itemid,
           sortfield: 'clock',
           sortorder: 'ASC',
-            limit: self.limitmetrics,
+          limit: this.limitmetrics,
           time_from: start,
         },
-          auth: self.auth,
+        auth: this.auth,
         id: 1
       };
 
@@ -184,10 +154,7 @@ function (angular, _, kbn) {
         data.params.time_till = end;
       }
 
-        apiRequests.push(self.performZabbixAPIRequest(data));
-      });
-
-      return this.handleMultipleRequest(apiRequests);
+      return this.performZabbixAPIRequest(data);
     };