Package org.apache.curator.retry

Class ExponentialBackoffRetry

java.lang.Object

org.apache.curator.retry.ExponentialBackoffRetry

All Implemented Interfaces:

RetryPolicy

Direct Known Subclasses:

BoundedExponentialBackoffRetry

public class ExponentialBackoffRetry
extends Object

Retry policy that retries a set number of times with increasing sleep time between retries

Constructor Summary

Constructors

Constructor	Description
ExponentialBackoffRetry(int baseSleepTimeMs, int maxRetries)
ExponentialBackoffRetry(int baseSleepTimeMs, int maxRetries, int maxSleepMs)

Method Summary

Modifier and Type	Method	Description
boolean	allowRetry(int retryCount, long elapsedTimeMs, RetrySleeper sleeper)	Called when an operation has failed for some reason.
int	getBaseSleepTimeMs()
int	getN()
protected long	getSleepTimeMs(int retryCount, long elapsedTimeMs)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExponentialBackoffRetry

public ExponentialBackoffRetry(int baseSleepTimeMs,
                               int maxRetries)

Parameters:

baseSleepTimeMs - initial amount of time to wait between retries

maxRetries - max number of times to retry

ExponentialBackoffRetry

public ExponentialBackoffRetry(int baseSleepTimeMs,
                               int maxRetries,
                               int maxSleepMs)

Parameters:

baseSleepTimeMs - initial amount of time to wait between retries

maxRetries - max number of times to retry

maxSleepMs - max time in ms to sleep on each retry

Method Detail

getBaseSleepTimeMs

public int getBaseSleepTimeMs()

getSleepTimeMs

protected long getSleepTimeMs(int retryCount,
                              long elapsedTimeMs)

getN

public int getN()

allowRetry

public boolean allowRetry(int retryCount,
                          long elapsedTimeMs,
                          RetrySleeper sleeper)

Description copied from interface: RetryPolicy

Called when an operation has failed for some reason. This method should return true to make another attempt.

Specified by:

allowRetry in interface RetryPolicy

Parameters:

retryCount - the number of times retried so far (0 the first time)

elapsedTimeMs - the elapsed time in ms since the operation was attempted

sleeper - use this to sleep - DO NOT call Thread.sleep

Returns:

true/false