rice.pastry.socket
Class SocketSourceRouteManager.AddressManager

java.lang.Object
  rice.pastry.socket.SocketSourceRouteManager.AddressManager

Enclosing class:

SocketSourceRouteManager

protected class SocketSourceRouteManager.AddressManager
extends java.lang.Object

Internal class which is tasked with maintaining the status of a single remote address. This class is in charge of all source routes to that address, as well as declaring liveness/death of this address

Nested Class Summary

class

SocketSourceRouteManager.AddressManager.SourceRouteManager Internal class which is charges with managing the remote connection via a specific route

Field Summary

protected SocketNodeHandle	address
protected SourceRoute	best the current best route to this remote address if best == null, we are already in a CheckDead, which means we are searching for a path
protected int	liveness
protected java.util.LinkedList	pendingAppSockets
protected java.util.LinkedList	queue the queue of messages waiting for a route of SocketBuffer
protected java.util.HashMap	routes
protected long	updated

Constructor Summary

SocketSourceRouteManager.AddressManager(SocketNodeHandle address, boolean search)
Constructor, given an address and whether or not it should attempt to find the best route

Method Summary

void	checkLiveness() Method which suggests a ping to the remote node.
void	connect(int appAddress, AppSocketReceiver receiver, int timeout) Method which opens an app socket to this address
int	getLiveness() Method which returns the last cached liveness value for the given address.
protected SocketSourceRouteManager.AddressManager.SourceRouteManager	getRouteManager(SourceRoute route) Method which returns the route manager for the given route
protected void	markAlive(SourceRoute route) This method should be called when a known route is declared alive.
protected void	markDead(SourceRoute route) This method should be called when a known route is declared dead.
protected void	markDeadForever() This method should be called when a known node is declared dead - this is ONLY called when a new epoch of that node is detected.
protected void	markProximity(SourceRoute route, int proximity) This method should be called when a known route has its proximity updated
protected void	markSuspected(SourceRoute route) This method should be called when a known route is declared suspected.
void	ping() Method which suggests a ping to the remote node.
int	proximity() Method which returns the last cached proximity value for the given address.
protected void	purgeQueue()
int	rto()
void	send(SocketBuffer message) Method which enqueues a message to this address
protected void	setAlive() Internal method which marks this address as being alive.
protected void	setDead() Internal method which marks this address as being dead.
protected void	setDeadForever() Internal method which marks this address as being dead.
protected void	setSuspected() Internal method which marks this address as being suspected.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

address

protected SocketNodeHandle address

best

protected SourceRoute best

the current best route to this remote address if best == null, we are already in a CheckDead, which means we are searching for a path

queue

protected java.util.LinkedList queue

the queue of messages waiting for a route of SocketBuffer

pendingAppSockets

protected java.util.LinkedList pendingAppSockets

routes

protected java.util.HashMap routes

liveness

protected int liveness

updated

protected long updated

Constructor Detail

SocketSourceRouteManager.AddressManager

public SocketSourceRouteManager.AddressManager(SocketNodeHandle address,
                                               boolean search)

Constructor, given an address and whether or not it should attempt to find the best route

Parameters:

address - The address

search - Whether or not the manager should try and find a route

Method Detail

getRouteManager

protected SocketSourceRouteManager.AddressManager.SourceRouteManager getRouteManager(SourceRoute route)

Method which returns the route manager for the given route

Parameters:

route - The route

Returns:

THe manager

Throws:

java.lang.IllegalArgumentException - if route is null

proximity

public int proximity()

Method which returns the last cached proximity value for the given address. If there is no cached value, then DEFAULT_PROXIMITY is returned.

Parameters:

address - The address to return the value for

Returns:

The ping value to the remote address

rto

public int rto()

getLiveness

public int getLiveness()

Method which returns the last cached liveness value for the given address. If there is no cached value, then true is returned.

Parameters:

address - The address to return the value for

Returns:

The Alive value

markAlive

protected void markAlive(SourceRoute route)

This method should be called when a known route is declared alive.

Parameters:

route - The now-live route

markSuspected

protected void markSuspected(SourceRoute route)

This method should be called when a known route is declared suspected.

Parameters:

route - The now-suspected route

markDead

protected void markDead(SourceRoute route)

This method should be called when a known route is declared dead.

Parameters:

route - The now-dead route

markDeadForever

protected void markDeadForever()

This method should be called when a known node is declared dead - this is ONLY called when a new epoch of that node is detected. Note that this method is silent - no checks are done. Caveat emptor.

Parameters:

address - The now-dead address

markProximity

protected void markProximity(SourceRoute route,
                             int proximity)

This method should be called when a known route has its proximity updated

Parameters:

route - The route

proximity - The proximity

send

public void send(SocketBuffer message)

Method which enqueues a message to this address

Parameters:

message - The message to send

connect

public void connect(int appAddress,
                    AppSocketReceiver receiver,
                    int timeout)

Method which opens an app socket to this address

Parameters:

message - The message to send

ping

public void ping()

Method which suggests a ping to the remote node.

checkLiveness

public void checkLiveness()

Method which suggests a ping to the remote node.

setAlive

protected void setAlive()

Internal method which marks this address as being alive. If we were dead before, it sends an update out to the observers. best must be non-null

Throws:

java.lang.IllegalStateException - if best is null.

setSuspected

protected void setSuspected()

Internal method which marks this address as being suspected.

setDead

protected void setDead()

Internal method which marks this address as being dead. If we were alive or suspected before, it sends an update out to the observers.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

setDeadForever

protected void setDeadForever()

Internal method which marks this address as being dead. If we were alive or suspected before, it sends an update out to the observers.

purgeQueue

protected void purgeQueue()