org.apache.storm.metric.internal

Class MultiCountStatAndMetric<T>

java.lang.Object

org.apache.storm.metric.internal.MultiCountStatAndMetric<T>

All Implemented Interfaces:

IMetric

public class MultiCountStatAndMetric<T>
extends Object
implements IMetric

Acts as a MultiCount Metric, but keeps track of approximate counts for the last 10 mins, 3 hours, 1 day, and all time. for the same keys

Constructor Summary

Constructors

Constructor and Description
MultiCountStatAndMetric(int numBuckets)

Method Summary

Modifier and Type	Method and Description
void	close()
Map<String,Map<T,Long>>	getTimeCounts()
Object	getValueAndReset()
void	incBy(T key, long count) Increase the count by the given value.
protected String	keyToString(T key)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MultiCountStatAndMetric

public MultiCountStatAndMetric(int numBuckets)

Parameters:

numBuckets - the number of buckets to divide the time periods into.

Method Detail

incBy

public void incBy(T key,
                  long count)

Increase the count by the given value.

Parameters:

count - number to count

keyToString

protected String keyToString(T key)

getValueAndReset

public Object getValueAndReset()

Specified by:

getValueAndReset in interface IMetric

Returns:

an object that will be sent 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.

getTimeCounts

public Map<String,Map<T,Long>> getTimeCounts()

close

public void close()