org.apache.cassandra.net

Class MessageOut<T>

java.lang.Object

org.apache.cassandra.net.MessageOut<T>

public class MessageOut<T>
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
java.net.InetAddress	from
java.util.Map<java.lang.String,byte[]>	parameters
T	payload
IVersionedSerializer<T>	serializer
MessagingService.Verb	verb

Constructor Summary

Constructors

Constructor and Description
MessageOut(java.net.InetAddress from, MessagingService.Verb verb, T payload, IVersionedSerializer<T> serializer, java.util.Map<java.lang.String,byte[]> parameters)
MessageOut(MessagingService.Verb verb)
MessageOut(MessagingService.Verb verb, T payload, IVersionedSerializer<T> serializer)

Method Summary

Modifier and Type	Method and Description
Stage	getStage()
long	getTimeout()
long	payloadSize(int version) Calculate the size of the payload of this message for the specified protocol version and memoize the result for the specified protocol version.
void	serialize(DataOutputPlus out, int version)
int	serializedSize(int version)
java.lang.String	toString()
MessageOut<T>	withParameter(java.lang.String key, byte[] value)

Methods inherited from class java.lang.Object

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

Field Detail

from

public final java.net.InetAddress from

verb

public final MessagingService.Verb verb

payload

public final T payload

serializer

public final IVersionedSerializer<T> serializer

parameters

public final java.util.Map<java.lang.String,byte[]> parameters

Constructor Detail

MessageOut

public MessageOut(MessagingService.Verb verb)

MessageOut

public MessageOut(MessagingService.Verb verb,
                  T payload,
                  IVersionedSerializer<T> serializer)

MessageOut

public MessageOut(java.net.InetAddress from,
                  MessagingService.Verb verb,
                  T payload,
                  IVersionedSerializer<T> serializer,
                  java.util.Map<java.lang.String,byte[]> parameters)

Method Detail

withParameter

public MessageOut<T> withParameter(java.lang.String key,
                                   byte[] value)

getStage

public Stage getStage()

getTimeout

public long getTimeout()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

serialize

public void serialize(DataOutputPlus out,
                      int version)
               throws java.io.IOException

Throws:

java.io.IOException

serializedSize

public int serializedSize(int version)

payloadSize

public long payloadSize(int version)

Calculate the size of the payload of this message for the specified protocol version and memoize the result for the specified protocol version. Memoization only covers the protocol version of the first invocation. It is not safe to call payloadSize concurrently from multiple threads unless it has already been invoked once from a single thread and there is a happens before relationship between that invocation and other threads concurrently invoking payloadSize. For instance it would be safe to invokePayload size to make a decision in the thread that created the message and then hand it off to other threads via a thread-safe queue, volatile write, or synchronized/ReentrantLock.

Parameters:

version - Protocol version to use when calculating payload size

Returns:

Size of the payload of this message in bytes