org.apache.cassandra.streaming

Class StreamResultFuture

java.lang.Object

com.google.common.util.concurrent.internal.InternalFutureFailureAccess

com.google.common.util.concurrent.AbstractFuture<StreamState>

org.apache.cassandra.streaming.StreamResultFuture

All Implemented Interfaces:

com.google.common.util.concurrent.ListenableFuture<StreamState>, java.util.concurrent.Future<StreamState>

public final class StreamResultFuture
extends com.google.common.util.concurrent.AbstractFuture<StreamState>

A future on the result (StreamState) of a streaming plan. In practice, this object also groups all the StreamSession for the streaming job involved. One StreamSession will be created for every peer involved and said session will handle every streaming (outgoing and incoming) to that peer for this job.

The future will return a result once every session is completed (successfully or not). If any session ended up with an error, the future will throw a StreamException.

You can attach StreamEventHandler to this object to listen on StreamEvents to track progress of the streaming.

Field Summary

Fields

Modifier and Type	Field and Description
java.util.UUID	planId
StreamOperation	streamOperation

Method Summary

Modifier and Type	Method and Description
void	addEventListener(StreamEventHandler listener)
static StreamResultFuture	createFollower(int sessionIndex, java.util.UUID planId, StreamOperation streamOperation, InetAddressAndPort from, io.netty.channel.Channel channel, java.util.UUID pendingRepair, PreviewKind previewKind)
static StreamResultFuture	createInitiator(java.util.UUID planId, StreamOperation streamOperation, java.util.Collection<StreamEventHandler> listeners, StreamCoordinator coordinator)
boolean	equals(java.lang.Object o)
StreamCoordinator	getCoordinator()
StreamState	getCurrentState()
StreamSession	getSession(InetAddressAndPort peer, int sessionIndex)
void	handleProgress(ProgressInfo progress)
int	hashCode()

Methods inherited from class com.google.common.util.concurrent.AbstractFuture

addListener, afterDone, cancel, get, get, interruptTask, isCancelled, isDone, pendingToString, set, setException, setFuture, toString, tryInternalFastPathGetFailure, wasInterrupted

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

planId

public final java.util.UUID planId

streamOperation

public final StreamOperation streamOperation

Method Detail

createInitiator

public static StreamResultFuture createInitiator(java.util.UUID planId,
                                                 StreamOperation streamOperation,
                                                 java.util.Collection<StreamEventHandler> listeners,
                                                 StreamCoordinator coordinator)

createFollower

public static StreamResultFuture createFollower(int sessionIndex,
                                                java.util.UUID planId,
                                                StreamOperation streamOperation,
                                                InetAddressAndPort from,
                                                io.netty.channel.Channel channel,
                                                java.util.UUID pendingRepair,
                                                PreviewKind previewKind)

getCoordinator

public StreamCoordinator getCoordinator()

addEventListener

public void addEventListener(StreamEventHandler listener)

getCurrentState

public StreamState getCurrentState()

Returns:

Current snapshot of streaming progress.

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

handleProgress

public void handleProgress(ProgressInfo progress)

getSession

public StreamSession getSession(InetAddressAndPort peer,
                                int sessionIndex)