org.apache.cassandra.service

Class BatchlogResponseHandler<T>

java.lang.Object

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

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

All Implemented Interfaces:

IAsyncCallback<T>, IAsyncCallbackWithFailure<T>

public class BatchlogResponseHandler<T>
extends AbstractWriteResponseHandler<T>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BatchlogResponseHandler.BatchlogCleanup
static interface	BatchlogResponseHandler.BatchlogCleanupCallback

Field Summary

Fields

Modifier and Type	Field and Description
protected int	requiredBeforeFinish

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

callback, consistencyLevel, keyspace, logger, naturalEndpoints, pendingEndpoints, start, writeType

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

isAlive

Constructor Summary

Constructors

Constructor and Description
BatchlogResponseHandler(AbstractWriteResponseHandler<T> wrapped, int requiredBeforeFinish, BatchlogResponseHandler.BatchlogCleanup cleanup)

Method Summary

Modifier and Type	Method and Description
protected int	ackCount()
void	assureSufficientLiveNodes()
void	get()
boolean	isLatencyForSnitch()
void	onFailure(java.net.InetAddress from) Called when there is an exception on the remote node or timeout happens
void	response(MessageIn<T> msg) null message means "response from local write"
protected void	signal()
protected int	totalBlockFor()
protected int	totalEndpoints()
protected boolean	waitingFor(java.net.InetAddress from)

Methods inherited from class java.lang.Object

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

Field Detail

requiredBeforeFinish

protected volatile int requiredBeforeFinish

Constructor Detail

BatchlogResponseHandler

public BatchlogResponseHandler(AbstractWriteResponseHandler<T> wrapped,
                               int requiredBeforeFinish,
                               BatchlogResponseHandler.BatchlogCleanup cleanup)

Method Detail

ackCount

protected int ackCount()

Specified by:

ackCount in class AbstractWriteResponseHandler<T>

Returns:

number of responses received

response

public void response(MessageIn<T> msg)

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:

msg - response 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.

onFailure

public void onFailure(java.net.InetAddress from)

Description copied from interface: IAsyncCallbackWithFailure

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

Specified by:

onFailure in interface IAsyncCallbackWithFailure<T>

Overrides:

onFailure in class AbstractWriteResponseHandler<T>

assureSufficientLiveNodes

public void assureSufficientLiveNodes()

Overrides:

assureSufficientLiveNodes in class AbstractWriteResponseHandler<T>

get

public void get()
         throws WriteTimeoutException,
                WriteFailureException

Overrides:

get in class AbstractWriteResponseHandler<T>

Throws:

WriteTimeoutException

WriteFailureException

totalBlockFor

protected int totalBlockFor()

Overrides:

totalBlockFor in class AbstractWriteResponseHandler<T>

Returns:

the minimum number of endpoints that must reply.

totalEndpoints

protected int totalEndpoints()

Overrides:

totalEndpoints in class AbstractWriteResponseHandler<T>

Returns:

the total number of endpoints the request has been sent to.

waitingFor

protected boolean waitingFor(java.net.InetAddress from)

Overrides:

waitingFor in class AbstractWriteResponseHandler<T>

Returns:

true if the message counts towards the totalBlockFor() threshold

signal

protected void signal()

Overrides:

signal in class AbstractWriteResponseHandler<T>