lib.easyjava.net.replication.multipaxos.message

Class LearnedCommand<E extends PaxosCommand>

java.lang.Object

lib.easyjava.net.replication.multipaxos.message.PaxosMessage

lib.easyjava.net.replication.multipaxos.message.CommandMessage<E>

lib.easyjava.net.replication.multipaxos.message.LearnedCommand<E>

Type Parameters:

E - the type of command which has been learned

All Implemented Interfaces:

java.io.Serializable, PaxosMessage.Denial

public class LearnedCommand<E extends PaxosCommand>
extends CommandMessage<E>
implements PaxosMessage.Denial

This message asserts that a command slot has already been filled by successful completion of a round of Paxos. It is used to update nodes that aren't yet up to date on the current cluster state.

Author:

Rob Rua (robrua@alumni.cmu.edu)

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class lib.easyjava.net.replication.multipaxos.message.PaxosMessage

PaxosMessage.Acceptance, PaxosMessage.AcceptResponse, PaxosMessage.Denial, PaxosMessage.ProposeResponse, PaxosMessage.Request

Field Summary

Fields inherited from class lib.easyjava.net.replication.multipaxos.message.CommandMessage

command

Fields inherited from class lib.easyjava.net.replication.multipaxos.message.PaxosMessage

commandSlot, proposalNumber, sourceNodeID

Constructor Summary

Constructors

Constructor and Description
LearnedCommand(int sourceNodeID, long commandSlot, long proposalNumber, E command)

Method Summary

Modifier and Type	Method and Description
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LearnedCommand

public LearnedCommand(int sourceNodeID,
                      long commandSlot,
                      long proposalNumber,
                      E command)

Parameters:

sourceNodeID - the ID of the node sending this message

commandSlot - the command slot this is a message for

proposalNumber - the proposal number this is a message for

command - the command that this message holds

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class CommandMessage<E extends PaxosCommand>