bftsmart.consensus.messages

Class MessageFactory

java.lang.Object

bftsmart.consensus.messages.MessageFactory

public class MessageFactory
extends java.lang.Object

This class work as a factory of messages used in the paxos protocol.

Field Summary

Fields

Modifier and Type	Field and Description
static int	ACCEPT
static int	COLLECT
static int	PROPOSE
static int	WRITE

Constructor Summary

Constructors

Constructor and Description
MessageFactory(int from) Creates a message factory

Method Summary

Methods

Modifier and Type	Method and Description
PaxosMessage	createAccept(int id, int round, byte[] value) Creates a WRITE message to be sent by this process
PaxosMessage	createPropose(int id, int round, byte[] value) Creates a PROPOSE message to be sent by this process
PaxosMessage	createWrite(int id, int round, byte[] value) Creates a WRITE message to be sent by this process

Methods inherited from class java.lang.Object

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

Field Detail

PROPOSE

public static final int PROPOSE

See Also:

Constant Field Values

WRITE

public static final int WRITE

See Also:

Constant Field Values

ACCEPT

public static final int ACCEPT

See Also:

Constant Field Values

COLLECT

public static final int COLLECT

See Also:

Constant Field Values

Constructor Detail

MessageFactory

public MessageFactory(int from)

Creates a message factory

Parameters:

from - Replica ID of the process which sent this message

Method Detail

createPropose

public PaxosMessage createPropose(int id,
                         int round,
                         byte[] value)

Creates a PROPOSE message to be sent by this process

Parameters:

id - Consensus's execution ID

round - Round number

value - Proposed value

proof - Proofs from other replicas

Returns:

A paxos message of the PROPOSE type, with the specified id, round, value, and proof

createWrite

public PaxosMessage createWrite(int id,
                       int round,
                       byte[] value)

Creates a WRITE message to be sent by this process

Parameters:

id - Consensus's execution ID

round - Round number

value - Write value

Returns:

A consensus message of the WRITE type, with the specified id, round, and value

createAccept

public PaxosMessage createAccept(int id,
                        int round,
                        byte[] value)

Creates a WRITE message to be sent by this process

Parameters:

id - Consensus's execution ID

round - Round number

value - Accepted value

Returns:

A consensus message of the ACCEPT type, with the specified id, round, and value