rice.tutorial.lesson6
Class MyScribeClient

java.lang.Object
  rice.tutorial.lesson6.MyScribeClient

All Implemented Interfaces:

Application, ScribeClient

public class MyScribeClient

extends java.lang.Object

implements ScribeClient, Application

We implement the Application interface to receive regular timed messages (see lesson5). We implement the ScribeClient interface to receive scribe messages (called ScribeContent).

Version:

$Id: pretty.settings 2305 2005-03-11 20:22:33Z jeffh $

Author:

Jeff Hoye

Field Summary

protected Endpoint

endpoint The Endpoint represents the underlieing node.

Constructor Summary

MyScribeClient(Node node)
The constructor for this scribe client.

Method Summary

boolean	anycast(Topic topic, ScribeContent content) Called when we receive an anycast.
void	childAdded(Topic topic, NodeHandle child) DESCRIBE THE METHOD
void	childRemoved(Topic topic, NodeHandle child) DESCRIBE THE METHOD
void	deliver(Id id, Message message) Part of the Application interface.
void	deliver(Topic topic, ScribeContent content) Called whenever we receive a published message.
boolean	forward(RouteMessage message) DESCRIBE THE METHOD
NodeHandle[]	getChildren() Gets the Children attribute of the MyScribeClient object
NodeHandle	getParent() Gets the Parent attribute of the MyScribeClient object
boolean	isRoot() Some passthrough accessors for the myScribe ************
void	sendAnycast() Sends an anycast message.
void	sendMulticast() Sends the multicast message.
void	startPublishTask() Starts the publish task.
void	subscribe() Subscribes to myTopic.
void	subscribeFailed(Topic topic) DESCRIBE THE METHOD
void	update(NodeHandle handle, boolean joined) DESCRIBE THE METHOD

Methods inherited from class java.lang.Object

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

Field Detail

endpoint

protected Endpoint endpoint

The Endpoint represents the underlieing node. By making calls on the Endpoint, it assures that the message will be delivered to a MyApp on whichever node the message is intended for.

Constructor Detail

MyScribeClient

public MyScribeClient(Node node)

The constructor for this scribe client. It will construct the ScribeApplication.

Parameters:

node - the PastryNode

Method Detail

isRoot

public boolean isRoot()

Some passthrough accessors for the myScribe ************

Returns:

The Root value

getParent

public NodeHandle getParent()

Gets the Parent attribute of the MyScribeClient object

Returns:

The Parent value

getChildren

public NodeHandle[] getChildren()

Gets the Children attribute of the MyScribeClient object

Returns:

The Children value

subscribe

public void subscribe()

Subscribes to myTopic.

startPublishTask

public void startPublishTask()

Starts the publish task.

deliver

public void deliver(Id id,
                    Message message)

Part of the Application interface. Will receive PublishContent every so often.

Specified by:

deliver in interface Application

Parameters:

id - DESCRIBE THE PARAMETER

message - DESCRIBE THE PARAMETER

sendMulticast

public void sendMulticast()

Sends the multicast message.

deliver

public void deliver(Topic topic,
                    ScribeContent content)

Called whenever we receive a published message.

Specified by:

deliver in interface ScribeClient

Parameters:

topic - DESCRIBE THE PARAMETER

content - DESCRIBE THE PARAMETER

sendAnycast

public void sendAnycast()

Sends an anycast message.

anycast

public boolean anycast(Topic topic,
                       ScribeContent content)

Called when we receive an anycast. If we return false, it will be delivered elsewhere. Returning true stops the message here.

Specified by:

anycast in interface ScribeClient

Parameters:

topic - DESCRIBE THE PARAMETER

content - DESCRIBE THE PARAMETER

Returns:

DESCRIBE THE RETURN VALUE

childAdded

public void childAdded(Topic topic,
                       NodeHandle child)

DESCRIBE THE METHOD

Specified by:

childAdded in interface ScribeClient

Parameters:

topic - DESCRIBE THE PARAMETER

child - DESCRIBE THE PARAMETER

childRemoved

public void childRemoved(Topic topic,
                         NodeHandle child)

DESCRIBE THE METHOD

Specified by:

childRemoved in interface ScribeClient

Parameters:

topic - DESCRIBE THE PARAMETER

child - DESCRIBE THE PARAMETER

subscribeFailed

public void subscribeFailed(Topic topic)

DESCRIBE THE METHOD

Specified by:

subscribeFailed in interface ScribeClient

Parameters:

topic - DESCRIBE THE PARAMETER

forward

public boolean forward(RouteMessage message)

DESCRIBE THE METHOD

Specified by:

forward in interface Application

Parameters:

message - DESCRIBE THE PARAMETER

Returns:

DESCRIBE THE RETURN VALUE

update

public void update(NodeHandle handle,
                   boolean joined)

DESCRIBE THE METHOD

Specified by:

update in interface Application

Parameters:

handle - DESCRIBE THE PARAMETER

joined - DESCRIBE THE PARAMETER