net.tomp2p.dht

Class FutureDigest

java.lang.Object

net.tomp2p.futures.BaseFutureImpl<K>

net.tomp2p.dht.FutureDHT<FutureDigest>

net.tomp2p.dht.FutureDigest

All Implemented Interfaces:

BaseFuture, Cancel

public class FutureDigest
extends FutureDHT<FutureDigest>

The future object for put() operations including routing.

Author:

Thomas Bocek

Nested Class Summary

Nested classes/interfaces inherited from interface net.tomp2p.futures.BaseFuture

BaseFuture.FutureType

Field Summary

Fields inherited from class net.tomp2p.futures.BaseFutureImpl

completed, lock, reason, type

Constructor Summary

Constructors

Constructor and Description
FutureDigest(DHTBuilder<?> builder) Default constructor.
FutureDigest(DHTBuilder<?> builder, int min, EvaluatingSchemeDHT evaluationScheme) Creates a new DHT future object that keeps track of the status of the DHT operations.

Method Summary

Methods

Modifier and Type	Method and Description
DigestResult	digest() Return the digest information from the get() after evaluation.
boolean	isMinReached() Checks if the minimum of expected results have been reached.
Map<PeerAddress,DigestResult>	rawDigest()
void	receivedDigest(Map<PeerAddress,DigestResult> rawDigest) Finishes the future and set the digest information that have been received.

Methods inherited from class net.tomp2p.dht.FutureDHT

addFutureDHTReleaseListener, addRequests, builder, futureRequests, futureRouting, futureRouting

Methods inherited from class net.tomp2p.futures.BaseFutureImpl

addCancel, addListener, addListener, await, await, awaitListeners, awaitListenersUninterruptibly, awaitUninterruptibly, awaitUninterruptibly, cancel, completedAndNotify, failed, failed, failed, failed, failed, failedReason, isCompleted, isFailed, isSuccess, notifyListeners, removeCancel, removeListener, self, self, type

Methods inherited from class java.lang.Object

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

Constructor Detail

FutureDigest

public FutureDigest(DHTBuilder<?> builder)

Default constructor.

FutureDigest

public FutureDigest(DHTBuilder<?> builder,
            int min,
            EvaluatingSchemeDHT evaluationScheme)

Creates a new DHT future object that keeps track of the status of the DHT operations.

Parameters:

min - The minimum of expected results

evaluationScheme - The scheme to evaluate results from multiple peers

Method Detail

receivedDigest

public void receivedDigest(Map<PeerAddress,DigestResult> rawDigest)

Finishes the future and set the digest information that have been received.

Parameters:

rawDigest - The hashes of the content stored with information from which peer it has been received.

rawDigest

public Map<PeerAddress,DigestResult> rawDigest()

Returns:

The raw digest information with hashes of the content and the information which peer has been contacted

digest

public DigestResult digest()

Return the digest information from the get() after evaluation. The evaluation gets rid of the PeerAddress information, by either a majority vote or cumulation.

Returns:

The evaluated digest information that have been received.

isMinReached

public boolean isMinReached()

Checks if the minimum of expected results have been reached. This flag is also used for determining the success or failure of this future for put and send_direct.

Returns:

True, if expected minimum results have been reached.