org.apache.storm.metric.internal

Class MultiLatencyStatAndMetric<T>

java.lang.Object

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

All Implemented Interfaces:

IMetric

public class MultiLatencyStatAndMetric<T>
extends Object
implements IMetric

Acts as a Latnecy Metric for multiple keys, 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
MultiLatencyStatAndMetric(int numBuckets) Constructor.

Method Summary

Modifier and Type	Method and Description
void	close()
Map<String,Map<T,Double>>	getTimeLatAvg()
Object	getValueAndReset() Get value and reset.
protected String	keyToString(T key)
void	record(T key, long latency) Record a latency value.

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiLatencyStatAndMetric

public MultiLatencyStatAndMetric(int numBuckets)

Constructor.

Parameters:

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

Method Detail

record

public void record(T key,
                   long latency)

Record a latency value.

Parameters:

latency - the measurement to record

keyToString

protected String keyToString(T key)

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 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.

getTimeLatAvg

public Map<String,Map<T,Double>> getTimeLatAvg()

close

public void close()