org.apache.cassandra.service.paxos

Class AbstractPaxosCallback<T>

java.lang.Object

org.apache.cassandra.service.paxos.AbstractPaxosCallback<T>

All Implemented Interfaces:

RequestCallback<T>

Direct Known Subclasses:

PrepareCallback, ProposeCallback

public abstract class AbstractPaxosCallback<T>
extends java.lang.Object
implements RequestCallback<T>

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.concurrent.CountDownLatch	latch
protected int	targets

Constructor Summary

Constructors

Constructor and Description
AbstractPaxosCallback(int targets, ConsistencyLevel consistency, long queryStartNanoTime)

Method Summary

Modifier and Type	Method and Description
void	await()
int	getResponseCount()
boolean	invokeOnFailure()
void	onFailure(InetAddressAndPort from, RequestFailureReason failureReason) Called when there is an exception on the remote node or timeout happens

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.net.RequestCallback

onResponse, trackLatencyForSnitch

Field Detail

latch

protected final java.util.concurrent.CountDownLatch latch

targets

protected final int targets

Constructor Detail

AbstractPaxosCallback

public AbstractPaxosCallback(int targets,
                             ConsistencyLevel consistency,
                             long queryStartNanoTime)

Method Detail

getResponseCount

public int getResponseCount()

await

public void await()
           throws WriteTimeoutException

Throws:

WriteTimeoutException

onFailure

public void onFailure(InetAddressAndPort from,
                      RequestFailureReason failureReason)

Description copied from interface: RequestCallback

Called when there is an exception on the remote node or timeout happens

Specified by:

onFailure in interface RequestCallback<T>

invokeOnFailure

public boolean invokeOnFailure()

Specified by:

invokeOnFailure in interface RequestCallback<T>

Returns:

true if the callback should be invoked on failure