Custom aggregators

Aggregators main page

1. Create class which implements MetricAggregatorProvider
   This class should provide instance of your aggregator - class that implements interface MetricAggregator<C extends Number>
   

   // begin: following section is used for docu generation - custom aggregator source
   public class MaxMetricAggregatorProvider implements MetricAggregatorProvider{
   
       @Override
       public MetricAggregator provide() {
           return new MaxMetricAggregator();
       }
   
       private static class MaxMetricAggregator implements MetricAggregator<Number> {
   
           private Double value = null;
   
           @Override
           public void append(Number calculated) {
               if (value == null) {
                   value = calculated.doubleValue();
               }
               else {
                   value = Math.max(value,calculated.doubleValue());
               }
           }
   
           @Override
           public Double getAggregated() {
               return value;
           }
   
           @Override
           public void reset() {
               value = null;
           }
   
           @Override
           public String getName() {
               return "max";
           }
       }
   }
   // end: following section is used for docu generation - custom aggregator source

   
   
2. Create bean of this class in some configuration file. Put some id for it.

       <!--begin: following section is used for docu generation - custom aggregator-->
       <bean id="maxAggregator" class="metric.aggregator.MaxMetricAggregatorProvider"/>
       <!--end: following section is used for docu generation - custom aggregator-->

   
   
3. Add metric aggregator of type metric-aggregator-ref to you metric-custom block.
   

               <!--begin: following section is used for docu generation - custom aggregator usage-->
               <metric id="sin2" xsi:type="metric-custom" calculator="sin" plotData="true" saveSummary="true">
                   <metric-aggregator xsi:type="metric-aggregator-ref" ref="maxAggregator"/>
                   <metric-aggregator xsi:type="metric-aggregator-ref" ref="minAggregator"/>
               </metric>
               <!--end: following section is used for docu generation - custom aggregator usage-->