org.multiverse.api
Class DefaultBackoffPolicy

java.lang.Object
  org.multiverse.api.DefaultBackoffPolicy

All Implemented Interfaces:

BackoffPolicy

public final class DefaultBackoffPolicy
extends Object
implements BackoffPolicy

A BackoffPolicy that does an 'exponential' backoff. So each next attempt, the calculated delay is increased and randomized (so the next value can be smaller than the previous, but overall they will increase).

Author:

Peter Veentjer.

Field Summary

static BackoffPolicy

MAX_100_MS

Constructor Summary

DefaultBackoffPolicy()
Creates an ExponentialBackoffPolicy with 100 nanoseconds as minimal delay and 100 milliseconds as maximum delay.

DefaultBackoffPolicy(long minDelayNs)
Creates an ExponentialBackoffPolicy with given maximum delay.

Method Summary

protected long	calcDelayNs(int attempt)
void	delay(int attempt) Delays the calling Thread.
void	delayUninterruptible(int attempt) Delays the calling Thread without being interrupted.

Methods inherited from class java.lang.Object

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

Field Detail

MAX_100_MS

public static final BackoffPolicy MAX_100_MS

Constructor Detail

DefaultBackoffPolicy

public DefaultBackoffPolicy()

Creates an ExponentialBackoffPolicy with 100 nanoseconds as minimal delay and 100 milliseconds as maximum delay.

DefaultBackoffPolicy

public DefaultBackoffPolicy(long minDelayNs)

Creates an ExponentialBackoffPolicy with given maximum delay.

Parameters:

minDelayNs - the minimum delay in nanoseconds to wait. If a negative or zero value provided, it will be interpreted that no external minimal value is needed.

Throws:

NullPointerException - if unit is null.

Method Detail

delay

public void delay(int attempt)
           throws InterruptedException

Description copied from interface: BackoffPolicy

Delays the calling Thread.

The implementation is free to make this a no-op call.

Specified by:

delay in interface BackoffPolicy

Throws:

InterruptedException

delayUninterruptible

public void delayUninterruptible(int attempt)

Description copied from interface: BackoffPolicy

Delays the calling Thread without being interrupted.

The implementation is free to make this a no-op call.

Specified by:

delayUninterruptible in interface BackoffPolicy

Parameters:

attempt - the

calcDelayNs

protected long calcDelayNs(int attempt)