Rice Pastry API

org.mpisws.p2p.transport.simpleidentity
Class SimpleIdentityTransportLayer<Identifier,MessageType>

java.lang.Object
  extended by org.mpisws.p2p.transport.simpleidentity.SimpleIdentityTransportLayer<Identifier,MessageType>
Type Parameters:
Identifier -
MessageType -
All Implemented Interfaces:
TransportLayer<Identifier,MessageType>, TransportLayerCallback<Identifier,MessageType>, Destructable

public class SimpleIdentityTransportLayer<Identifier,MessageType>
extends java.lang.Object
implements TransportLayer<Identifier,MessageType>, TransportLayerCallback<Identifier,MessageType>

The purpose of this layer is to identify the opener of a TCP connection, because the socket is using an ephemeral port.

Author:
Jeff Hoye

Field Summary
protected  ErrorHandler<Identifier> errorHandler
           
protected  Logger logger
           
protected  Serializer<Identifier> serializer
           
protected  TransportLayer<Identifier,MessageType> tl
           
 
Constructor Summary
SimpleIdentityTransportLayer(TransportLayer<Identifier,MessageType> tl, Serializer<Identifier> serializer, LocalIdentifierStrategy<Identifier> localIdStrategy, Environment env, ErrorHandler<Identifier> handler)
           
 
Method Summary
 void acceptMessages(boolean b)
          Toggle accepting incoming messages.
 void acceptSockets(boolean b)
          Toggle accepting new sockets.
 void destroy()
           
 Identifier getLocalIdentifier()
          The local node.
 void incomingSocket(P2PSocket<Identifier> s)
          Notification of a new socket.
 void messageReceived(Identifier i, MessageType m, java.util.Map<java.lang.String,java.lang.Object> options)
          Called when a new message is received.
 SocketRequestHandle<Identifier> openSocket(Identifier i, SocketCallback<Identifier> deliverSocketToMe, java.util.Map<java.lang.String,java.lang.Object> options)
          Open a socket to the Identifier
 MessageRequestHandle<Identifier,MessageType> sendMessage(Identifier i, MessageType m, MessageCallback<Identifier,MessageType> deliverAckToMe, java.util.Map<java.lang.String,java.lang.Object> options)
          Send the message to the identifier
 void setCallback(TransportLayerCallback<Identifier,MessageType> callback)
          Set the callback for incoming sockets/messages
 void setErrorHandler(ErrorHandler<Identifier> handler)
          To be notified of problems not related to an outgoing messaage/socket.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

tl

protected TransportLayer<Identifier,MessageType> tl

logger

protected Logger logger

errorHandler

protected ErrorHandler<Identifier> errorHandler

serializer

protected Serializer<Identifier> serializer
Constructor Detail

SimpleIdentityTransportLayer

public SimpleIdentityTransportLayer(TransportLayer<Identifier,MessageType> tl,
                                    Serializer<Identifier> serializer,
                                    LocalIdentifierStrategy<Identifier> localIdStrategy,
                                    Environment env,
                                    ErrorHandler<Identifier> handler)
                             throws java.io.IOException
Throws:
java.io.IOException
Method Detail

acceptMessages

public void acceptMessages(boolean b)
Description copied from interface: TransportLayer
Toggle accepting incoming messages. Useful in flow control if overwhelmed by incoming sockets. Default: true

Specified by:
acceptMessages in interface TransportLayer<Identifier,MessageType>

acceptSockets

public void acceptSockets(boolean b)
Description copied from interface: TransportLayer
Toggle accepting new sockets. Useful in flow control if overwhelmed by incoming sockets. Default: true

Specified by:
acceptSockets in interface TransportLayer<Identifier,MessageType>

getLocalIdentifier

public Identifier getLocalIdentifier()
Description copied from interface: TransportLayer
The local node.

Specified by:
getLocalIdentifier in interface TransportLayer<Identifier,MessageType>
Returns:
The local node.

openSocket

public SocketRequestHandle<Identifier> openSocket(Identifier i,
                                                  SocketCallback<Identifier> deliverSocketToMe,
                                                  java.util.Map<java.lang.String,java.lang.Object> options)
Description copied from interface: TransportLayer
Open a socket to the Identifier

Specified by:
openSocket in interface TransportLayer<Identifier,MessageType>
Parameters:
i - who to open the socket to
deliverSocketToMe - the callback when the socket is opened
options - options on how to open the socket (don't source route, encrypt etc) (may not be respected if layer cannot provide service)
Returns:
an object to cancel opening the socket if it takes to long, or is no longer relevant

sendMessage

public MessageRequestHandle<Identifier,MessageType> sendMessage(Identifier i,
                                                                MessageType m,
                                                                MessageCallback<Identifier,MessageType> deliverAckToMe,
                                                                java.util.Map<java.lang.String,java.lang.Object> options)
Description copied from interface: TransportLayer
Send the message to the identifier

Specified by:
sendMessage in interface TransportLayer<Identifier,MessageType>
Parameters:
i - the destination
m - the message
deliverAckToMe - layer dependent notification when the message is sent (can indicate placed on the wire, point-to-point acknowledgment, or end-to-end acknowledgement)
options - delivery options (don't source route, encrypt etc) (may not be respected if layer cannot provide service)
Returns:
ability to cancel the message if no longer relevant

setCallback

public void setCallback(TransportLayerCallback<Identifier,MessageType> callback)
Description copied from interface: TransportLayer
Set the callback for incoming sockets/messages

Specified by:
setCallback in interface TransportLayer<Identifier,MessageType>
Parameters:
callback - the callback for incoming sockets/messages

setErrorHandler

public void setErrorHandler(ErrorHandler<Identifier> handler)
Description copied from interface: TransportLayer
To be notified of problems not related to an outgoing messaage/socket. Or to be notified if a callback isn't provided.

Specified by:
setErrorHandler in interface TransportLayer<Identifier,MessageType>
Parameters:
handler - to be notified of problems not related to a specific messaage/socket.

destroy

public void destroy()
Specified by:
destroy in interface Destructable

incomingSocket

public void incomingSocket(P2PSocket<Identifier> s)
                    throws java.io.IOException
Description copied from interface: TransportLayerCallback
Notification of a new socket.

Specified by:
incomingSocket in interface TransportLayerCallback<Identifier,MessageType>
Parameters:
s - the incoming socket
Throws:
java.io.IOException

messageReceived

public void messageReceived(Identifier i,
                            MessageType m,
                            java.util.Map<java.lang.String,java.lang.Object> options)
                     throws java.io.IOException
Description copied from interface: TransportLayerCallback
Called when a new message is received.

Specified by:
messageReceived in interface TransportLayerCallback<Identifier,MessageType>
Parameters:
i - The node it is coming from
m - the message
options - describe how the message arrived (udp/tcp, encrypted etc)
Throws:
java.io.IOException - if there is a problem decoding the message

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