org.apache.cassandra.service
Class DatacenterSyncWriteResponseHandler

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

All Implemented Interfaces:

IAsyncCallback, IMessageCallback

public class DatacenterSyncWriteResponseHandler
extends AbstractWriteResponseHandler

This class blocks for a quorum of responses _in all datacenters_ (CL.EACH_QUORUM).

Field Summary

Fields inherited from class org.apache.cassandra.service.AbstractWriteResponseHandler

callback, consistencyLevel, naturalEndpoints, pendingEndpoints, startTime

Constructor Summary

DatacenterSyncWriteResponseHandler(java.util.Collection<java.net.InetAddress> naturalEndpoints, java.util.Collection<java.net.InetAddress> pendingEndpoints, ConsistencyLevel consistencyLevel, java.lang.String table, java.lang.Runnable callback, WriteType writeType)

Method Summary

protected int	ackCount()
void	assureSufficientLiveNodes()
protected int	blockForCL()
boolean	isLatencyForSnitch()
void	response(MessageIn message) null message means "response from local write"

Methods inherited from class org.apache.cassandra.service.AbstractWriteResponseHandler

blockFor, get, signal

Methods inherited from class java.lang.Object

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

Constructor Detail

DatacenterSyncWriteResponseHandler

public DatacenterSyncWriteResponseHandler(java.util.Collection<java.net.InetAddress> naturalEndpoints,
                                          java.util.Collection<java.net.InetAddress> pendingEndpoints,
                                          ConsistencyLevel consistencyLevel,
                                          java.lang.String table,
                                          java.lang.Runnable callback,
                                          WriteType writeType)

Method Detail

response

public void response(MessageIn message)

Description copied from class: AbstractWriteResponseHandler

null message means "response from local write"

Specified by:

response in interface IAsyncCallback

Specified by:

response in class AbstractWriteResponseHandler

Parameters:

message - response received.

blockForCL

protected int blockForCL()

Specified by:

blockForCL in class AbstractWriteResponseHandler

ackCount

protected int ackCount()

Specified by:

ackCount in class AbstractWriteResponseHandler

assureSufficientLiveNodes

public void assureSufficientLiveNodes()
                               throws UnavailableException

Specified by:

assureSufficientLiveNodes in class AbstractWriteResponseHandler

Throws:

UnavailableException

isLatencyForSnitch

public boolean isLatencyForSnitch()

Returns:

true if this callback is on the read path and its latency should be given as input to the dynamic snitch.