org.apache.cassandra.service
Class AbstractWriteResponseHandler

java.lang.Object
  org.apache.cassandra.service.AbstractWriteResponseHandler

All Implemented Interfaces:

IAsyncCallback, IMessageCallback, IWriteResponseHandler

Direct Known Subclasses:

DatacenterSyncWriteResponseHandler, WriteResponseHandler

public abstract class AbstractWriteResponseHandler
extends java.lang.Object
implements IWriteResponseHandler

Field Summary

protected java.lang.Runnable	callback
protected ConsistencyLevel	consistencyLevel
protected long	startTime
protected java.util.Collection<java.net.InetAddress>	writeEndpoints

Constructor Summary

protected

AbstractWriteResponseHandler(java.util.Collection<java.net.InetAddress> writeEndpoints, ConsistencyLevel consistencyLevel, java.lang.Runnable callback)

Method Summary

protected abstract int	ackCount()
abstract void	assureSufficientLiveNodes()
protected abstract int	blockFor()
void	get()
abstract void	response(MessageIn msg) null message means "response from local write"
protected void	signal()

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.IMessageCallback

isLatencyForSnitch

Field Detail

startTime

protected final long startTime

writeEndpoints

protected final java.util.Collection<java.net.InetAddress> writeEndpoints

consistencyLevel

protected final ConsistencyLevel consistencyLevel

callback

protected final java.lang.Runnable callback

Constructor Detail

AbstractWriteResponseHandler

protected AbstractWriteResponseHandler(java.util.Collection<java.net.InetAddress> writeEndpoints,
                                       ConsistencyLevel consistencyLevel,
                                       java.lang.Runnable callback)

Parameters:

callback - A callback to be called when the write is successful. Note that this callback will *not* be called in case of an exception (timeout or unavailable).

Method Detail

get

public void get()
         throws WriteTimeoutException

Specified by:

get in interface IWriteResponseHandler

Throws:

WriteTimeoutException

ackCount

protected abstract int ackCount()

blockFor

protected abstract int blockFor()

response

public abstract void response(MessageIn msg)

null message means "response from local write"

Specified by:

response in interface IAsyncCallback

Parameters:

msg - response received.

assureSufficientLiveNodes

public abstract void assureSufficientLiveNodes()
                                        throws UnavailableException

Specified by:

assureSufficientLiveNodes in interface IWriteResponseHandler

Throws:

UnavailableException

signal

protected void signal()