org.apache.streams.util.api.requests.backoff.impl

Class ExponentialBackOffStrategy

java.lang.Object

org.apache.streams.util.api.requests.backoff.AbstractBackOffStrategy

org.apache.streams.util.api.requests.backoff.impl.ExponentialBackOffStrategy

All Implemented Interfaces:

BackOffStrategy

public class ExponentialBackOffStrategy
extends AbstractBackOffStrategy

Exponential backoff strategy. Calculated by baseBackOffTimeInSeconds raised the attempt-count power.

Constructor Summary

Constructors

Constructor and Description
ExponentialBackOffStrategy(int baseBackOffTimeInSeconds) Unlimited use ExponentialBackOffStrategy.
ExponentialBackOffStrategy(int baseBackOffTimeInSeconds, int maxNumAttempts) Limited use ExponentialBackOffStrategy.

Method Summary

Modifier and Type	Method and Description
protected long	calculateBackOffTime(int attemptCount, long baseSleepTime) Calculate the amount of time in milliseconds that the strategy should back off for

Methods inherited from class org.apache.streams.util.api.requests.backoff.AbstractBackOffStrategy

backOff, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

ExponentialBackOffStrategy

public ExponentialBackOffStrategy(int baseBackOffTimeInSeconds)

Unlimited use ExponentialBackOffStrategy.

Parameters:

baseBackOffTimeInSeconds - baseBackOffTimeInSeconds

ExponentialBackOffStrategy

public ExponentialBackOffStrategy(int baseBackOffTimeInSeconds,
                                  int maxNumAttempts)

Limited use ExponentialBackOffStrategy.

Parameters:

baseBackOffTimeInSeconds - baseBackOffTimeInSeconds

maxNumAttempts - maxNumAttempts

Method Detail

calculateBackOffTime

protected long calculateBackOffTime(int attemptCount,
                                    long baseSleepTime)

Description copied from class: AbstractBackOffStrategy

Calculate the amount of time in milliseconds that the strategy should back off for

Specified by:

calculateBackOffTime in class AbstractBackOffStrategy

Parameters:

attemptCount - the number of attempts the strategy has backed off. i.e. 1 -> this is the first attempt, 2 -> this is the second attempt, etc.

baseSleepTime - the minimum amount of time it should back off for in milliseconds

Returns:

the amount of time it should back off in milliseconds