com.google.bitcoin.utils
Class ExponentialBackoff

java.lang.Object
  com.google.bitcoin.utils.ExponentialBackoff

All Implemented Interfaces:

Comparable<ExponentialBackoff>

public class ExponentialBackoff
extends Object
implements Comparable<ExponentialBackoff>

Tracks successes and failures and calculates a time to retry the operation.

The retries are exponentially backed off, up to a maximum interval. On success the back off interval is reset.

Nested Class Summary

static class

ExponentialBackoff.Params Parameters to configure a particular kind of exponential backoff.

Field Summary

static int	DEFAULT_INITIAL_MILLIS
static int	DEFAULT_MAXIMUM_MILLIS
static float	DEFAULT_MULTIPLIER

Constructor Summary

ExponentialBackoff(ExponentialBackoff.Params params)

Method Summary

int	compareTo(ExponentialBackoff other)
long	getRetryTime() Get the next time to retry, in milliseconds since the epoch
String	toString()
void	trackFailure() Track a failure - multiply the back off interval by the multiplier
void	trackSuccess() Track a success - reset back off interval to the initial value

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_INITIAL_MILLIS

public static final int DEFAULT_INITIAL_MILLIS

See Also:

Constant Field Values

DEFAULT_MULTIPLIER

public static final float DEFAULT_MULTIPLIER

See Also:

Constant Field Values

DEFAULT_MAXIMUM_MILLIS

public static final int DEFAULT_MAXIMUM_MILLIS

See Also:

Constant Field Values

Constructor Detail

ExponentialBackoff

public ExponentialBackoff(ExponentialBackoff.Params params)

Method Detail

trackSuccess

public void trackSuccess()

Track a success - reset back off interval to the initial value

trackFailure

public void trackFailure()

Track a failure - multiply the back off interval by the multiplier

getRetryTime

public long getRetryTime()

Get the next time to retry, in milliseconds since the epoch

compareTo

public int compareTo(ExponentialBackoff other)

Specified by:

compareTo in interface Comparable<ExponentialBackoff>

toString

public String toString()

Overrides:

toString in class Object