org.apache.cassandra.service

Class WriteResponseHandler<T>

java.lang.Object

org.apache.cassandra.service.AbstractWriteResponseHandler<T>

org.apache.cassandra.service.WriteResponseHandler<T>

All Implemented Interfaces:

IAsyncCallback<T>, IAsyncCallbackWithFailure<T>

Direct Known Subclasses:

DatacenterWriteResponseHandler

public class WriteResponseHandler<T>
extends AbstractWriteResponseHandler<T>

Handles blocking writes for ONE, ANY, TWO, THREE, QUORUM, and ALL consistency levels.

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	logger
protected int	responses

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

callback, consistencyLevel, keyspace, naturalEndpoints, pendingEndpoints, writeType

Fields inherited from interface org.apache.cassandra.net.IAsyncCallback

isAlive

Constructor Summary

Constructors

Constructor and Description
WriteResponseHandler(java.util.Collection<java.net.InetAddress> writeEndpoints, java.util.Collection<java.net.InetAddress> pendingEndpoints, ConsistencyLevel consistencyLevel, Keyspace keyspace, java.lang.Runnable callback, WriteType writeType, long queryStartNanoTime)
WriteResponseHandler(java.net.InetAddress endpoint, WriteType writeType, long queryStartNanoTime)
WriteResponseHandler(java.net.InetAddress endpoint, WriteType writeType, java.lang.Runnable callback, long queryStartNanoTime)

Method Summary

Modifier and Type	Method and Description
protected int	ackCount()
boolean	isLatencyForSnitch()
void	response(MessageIn<T> m) null message means "response from local write"

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

assureSufficientLiveNodes, currentTimeout, get, onFailure, setSupportsBackPressure, signal, supportsBackPressure, totalBlockFor, totalEndpoints, waitingFor

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final org.slf4j.Logger logger

responses

protected volatile int responses

Constructor Detail

WriteResponseHandler

public WriteResponseHandler(java.util.Collection<java.net.InetAddress> writeEndpoints,
                            java.util.Collection<java.net.InetAddress> pendingEndpoints,
                            ConsistencyLevel consistencyLevel,
                            Keyspace keyspace,
                            java.lang.Runnable callback,
                            WriteType writeType,
                            long queryStartNanoTime)

WriteResponseHandler

public WriteResponseHandler(java.net.InetAddress endpoint,
                            WriteType writeType,
                            java.lang.Runnable callback,
                            long queryStartNanoTime)

WriteResponseHandler

public WriteResponseHandler(java.net.InetAddress endpoint,
                            WriteType writeType,
                            long queryStartNanoTime)

Method Detail

response

public void response(MessageIn<T> m)

Description copied from class: AbstractWriteResponseHandler

null message means "response from local write"

Specified by:

response in interface IAsyncCallback<T>

Specified by:

response in class AbstractWriteResponseHandler<T>

Parameters:

m - response received.

ackCount

protected int ackCount()

Specified by:

ackCount in class AbstractWriteResponseHandler<T>

Returns:

number of responses received

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.