ReducedMetric (Storm 2.7.1 API)

java.lang.Object
- org.apache.storm.metric.api.ReducedMetric

All Implemented Interfaces:

IMetric

Direct Known Subclasses:

ReducedShellMetric
```
public class ReducedMetric
extends Object
implements IMetric
```

- Constructor Summary
  
  Constructors
  Constructor Description
  
  ReducedMetric(IReducer reducer)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  Object getValueAndReset()
  Get value and reset.
  
  void update(Object value)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  - Methods inherited from interface org.apache.storm.metric.api.IMetric
    getDimensions

- Constructor Detail
  - ReducedMetric
```
public ReducedMetric(IReducer reducer)
```
- Method Detail
  - update
```
public void update(Object value)
```
  - getValueAndReset
```
public Object getValueAndReset()
```
    Description copied from interface: IMetric
    
    Get value and reset.
    
    Specified by:
    
    getValueAndReset in interface IMetric
    
    Returns:
    
    an object that will be sent to IMetricsConsumer.handleDataPoints(org.apache.storm.metric.api.IMetricsConsumer.TaskInfo, java.util.Collection). If null is returned nothing will be sent. If this value can be reset, like with a counter, a side effect of calling this should be that the value is reset.