com.netflix.hystrix.metric.consumer

Class RollingConcurrencyStream

java.lang.Object

com.netflix.hystrix.metric.consumer.RollingConcurrencyStream

Direct Known Subclasses:

RollingCommandMaxConcurrencyStream, RollingThreadPoolMaxConcurrencyStream

public abstract class RollingConcurrencyStream
extends java.lang.Object

Maintains a stream of max-concurrency This gets calculated using a rolling window of t1 milliseconds. This window has b buckets. Therefore, a new rolling-max is produced every t2 (=t1/b) milliseconds t1 = HystrixCommandProperties.metricsRollingStatisticalWindowInMilliseconds() b = HystrixCommandProperties.metricsRollingStatisticalWindowBuckets() This value gets cached in this class. It may be queried using RollingConcurrencyStream.getLatestRollingMax() This is a stable value - there's no peeking into a bucket until it is emitted

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RollingConcurrencyStream(HystrixEventStream<HystrixCommandExecutionStarted> inputEventStream, int numBuckets, int bucketSizeInMs)

Method Summary

Methods

Modifier and Type	Method and Description
long	getLatestRollingMax()
rx.Observable<java.lang.Integer>	observe()
void	startCachingStreamValuesIfUnstarted()
void	unsubscribe()

Methods inherited from class java.lang.Object

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

Constructor Detail

RollingConcurrencyStream

protected RollingConcurrencyStream(HystrixEventStream<HystrixCommandExecutionStarted> inputEventStream,
                        int numBuckets,
                        int bucketSizeInMs)

Method Detail

startCachingStreamValuesIfUnstarted

public void startCachingStreamValuesIfUnstarted()

getLatestRollingMax

public long getLatestRollingMax()

observe

public rx.Observable<java.lang.Integer> observe()

unsubscribe

public void unsubscribe()