net.tomp2p.dht

Class FuturePut

java.lang.Object

net.tomp2p.futures.BaseFutureImpl<K>

net.tomp2p.dht.FutureDHT<FuturePut>

net.tomp2p.dht.FuturePut

All Implemented Interfaces:

BaseFuture, Cancel

public class FuturePut
extends FutureDHT<FuturePut>

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.dht.FutureDHT

futuresCompleted

Fields inherited from class net.tomp2p.futures.BaseFutureImpl

completed, lock, reason, type

Constructor Summary

Constructors

Constructor and Description
FuturePut(DHTBuilder<?> builder, int min, int dataSize) 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
double	avgStoredKeys()
boolean	isMinReached() Checks if the minimum of expected results have been reached.
boolean	isSuccess()
boolean	isSuccessPartially()
Map<PeerAddress,Map<Number640,Byte>>	rawResult() Returns the raw result from the storage or removal operation.
Map<Number640,Integer>	result() Returns the keys that have been stored or removed after evaluation.
void	storedKeys(Map<PeerAddress,Map<Number640,Byte>> rawResult, FutureDone<Void> futuresCompleted) Finish the future and set the keys that have been stored.

Methods inherited from class net.tomp2p.dht.FutureDHT

addFutureDHTReleaseListener, addRequests, builder, futureRequests, futureRouting, futureRouting, futuresCompleted

Methods inherited from class net.tomp2p.futures.BaseFutureImpl

addCancel, addListener, await, await, awaitListeners, awaitListenersUninterruptibly, awaitUninterruptibly, awaitUninterruptibly, cancel, completedAndNotify, failed, failed, failed, failed, failed, failedReason, isCompleted, isFailed, 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

FuturePut

public FuturePut(DHTBuilder<?> builder,
         int min,
         int dataSize)

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

storedKeys

public void storedKeys(Map<PeerAddress,Map<Number640,Byte>> rawResult,
              FutureDone<Void> futuresCompleted)

Finish the future and set the keys that have been stored. Success or failure is determined if the communication was successful. This means that we need to further check if the other peers have denied the storage (e.g., due to no storage space, no security permissions). Further evaluation can be retrieved with avgStoredKeys() or if the evaluation should be done by the user, use #rawKeys().

Parameters:

futuresCompleted -

rawKeys - The keys that have been stored with information on which peer it has been stored

rawKeys480 - The keys with locationKey and domainKey Flag if the user requested putIfAbsent

avgStoredKeys

public double avgStoredKeys()

Returns:

The average keys received from the DHT. Only evaluates rawKeys.

rawResult

public Map<PeerAddress,Map<Number640,Byte>> rawResult()

Returns the raw result from the storage or removal operation.

Returns:

The raw keys and the information which peer has been contacted

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.

result

public Map<Number640,Integer> result()

Returns the keys that have been stored or removed after evaluation. The evaluation gets rid of the PeerAddress information, by either a majority vote or cumulation. Use FuturePut#evalKeys() instead of this method.

Returns:

The keys that have been stored or removed

isSuccess

public boolean isSuccess()

Specified by:

isSuccess in interface BaseFuture

Overrides:

isSuccess in class BaseFutureImpl<FuturePut>

isSuccessPartially

public boolean isSuccessPartially()