goofs

Class GetFreeMessage

java.lang.Object

goofs.Message

goofs.GetFreeMessage

All Implemented Interfaces:

java.io.Serializable

public class GetFreeMessage
extends Message

Message requesting chunkservers that are eligible to store new chunks.

Author:

Elliott Forney

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class goofs.Message

Message.Kind

Field Summary

Fields inherited from class goofs.Message

dst, kind, src

Constructor Summary

Constructors

Constructor and Description
GetFreeMessage(HostID src, HostID dst) Create new message requesting chunkservers that are eligible to store new chunks.

Method Summary

Modifier and Type	Method and Description
boolean	expectsReply() Determine whether or not this message should attempt to get a reply.
HostID[]	getChunkServers() Get the chunkservers sent.
GetFreeMessage	send() Send this message to its current destination.
void	setChunkServers(HostID[] chunkServers) Set the chunkservers to send.

Methods inherited from class goofs.Message

getDest, getSource, setDest, setSource, swapSrcDst, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

GetFreeMessage

public GetFreeMessage(HostID src,
                      HostID dst)

Create new message requesting chunkservers that are eligible to store new chunks.

Parameters:

src - Message source, a client.

dst - Message destination, a controller.

Method Detail

expectsReply

public boolean expectsReply()

Description copied from class: Message

Determine whether or not this message should attempt to get a reply.

Overrides:

expectsReply in class Message

Returns:

True if this message should wait for a reply after it is sent and false otherwise.

setChunkServers

public void setChunkServers(HostID[] chunkServers)

Set the chunkservers to send.

Parameters:

The - chunkservers to send in this message.

getChunkServers

public HostID[] getChunkServers()

Get the chunkservers sent.

Returns:

Array of chunkservers sent in this message.

send

public GetFreeMessage send()
                    throws java.lang.Exception

Send this message to its current destination.

Overrides:

send in class Message

Returns:

Reply message.

Throws:

java.lang.Exception