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## rice.pastry.socket
Class SocketSourceRouteManager

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

public class SocketSourceRouteManager
extends java.lang.Object

Class which keeps track of the best routes to remote nodes. This class is also therefore in charge of declaring node death and liveness.

Version:
  $Id: SocketSourceRouteManager.java,v 1.10 2005/03/16 19:11:05 jeffh Exp $
Author:
  Alan Mislove

Nested Class Summary
`protected class` | `SocketSourceRouteManager.AddressManager` Internal class which is tasked with maintaining the status of a single remote address.

Constructor Summary
`protected` | `SocketSourceRouteManager(PastryNode node, SocketNodeHandlePool pool, EpochInetSocketAddress bindAddress, EpochInetSocketAddress proxyAddress)` Constructor

Method Summary
`void` | `bootstrap(EpochInetSocketAddress address, Message message)` Method which sends a bootstrap message across the wire.
`void` | `checkLiveness(EpochInetSocketAddress address)` Method which FORCES a check of liveness of the remote node.
`protected SocketSourceRouteManager.AddressManager` | `getAddressManager(EpochInetSocketAddress address, boolean search)` Internal method which returns (or builds) the manager associated with an address
`protected SourceRoute[]` | `getAllRoutes(EpochInetSocketAddress destination)` Internal method which returns a list of all possible routes to a given address.
`java.util.HashMap` | `getBest()` Gets the Best attribute of the SocketSourceRouteManager object
`protected SourceRoute` | `getBestRoute(EpochInetSocketAddress address)` Internal method which returns the best known route to the given destination
`int` | `getLiveness(EpochInetSocketAddress address)` Method which returns the last cached liveness value for the given address.
`SocketCollectionManager` | `getManager()` Method which returns the internal manager
`protected void` | `markAlive(SourceRoute route)` This method should be called when a known route is declared alive.
`protected void` | `markDead(EpochInetSocketAddress address)` 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` | `markDead(SourceRoute route)` This method should be called when a known route is declared dead.
`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(EpochInetSocketAddress address)` Method which suggests a ping to the remote node.
`int` | `proximity(EpochInetSocketAddress address)` Method which returns the last cached proximity value for the given address.
`protected void` | `reroute(EpochInetSocketAddress address, Message m)` Reroutes the given message.
`void` | `resign()` Makes this node resign from the network.
`void` | `send(EpochInetSocketAddress address, Message message)` Method which sends a message across the wire.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### SocketSourceRouteManager

    protected SocketSourceRouteManager(PastryNode node,
                                       SocketNodeHandlePool pool,
                                       EpochInetSocketAddress bindAddress,
                                       EpochInetSocketAddress proxyAddress)

  Constructor

Parameters:
  `node` - The local node
  `pool` - The node hanlde pool
  `bindAddress` - The address which the node should bind to
  `proxyAddress` - The address which the node should advertise as it's address

Method Detail

### getBest

    public java.util.HashMap getBest()

  Gets the Best attribute of the SocketSourceRouteManager object

  Returns:
    The Best value

### getManager

    public SocketCollectionManager getManager()

  Method which returns the internal manager

  Returns:
    The internal manager

### getAddressManager

    protected SocketSourceRouteManager.AddressManager getAddressManager(EpochInetSocketAddress address,
                                                                        boolean search)

  Internal method which returns (or builds) the manager associated with an address

  Parameters:
    `address` - The remote address
    `search` - DESCRIBE THE PARAMETER
  Returns:
    The AddressManager value

### getLiveness

    public int getLiveness(EpochInetSocketAddress address)

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

  Parameters:
    `address` - The address to return the value for
  Returns:
    The liveness value

### getAllRoutes

    protected SourceRoute[] getAllRoutes(EpochInetSocketAddress destination)

  Internal method which returns a list of all possible routes to a given address. Currently, this method simply sees if any of the leafset members are able to reach the node.

  Parameters:
    `destination` - DESCRIBE THE PARAMETER
  Returns:
    All possible source routes to the destination

### getBestRoute

    protected SourceRoute getBestRoute(EpochInetSocketAddress address)

  Internal method which returns the best known route to the given destination

  Parameters:
    `address` - The address
  Returns:
    The BestRoute value

### resign

    public void resign()
                throws java.io.IOException

  Makes this node resign from the network. Is designed to be used for debugging and testing.

  Throws:
    `java.io.IOException` - DESCRIBE THE EXCEPTION

### bootstrap

    public void bootstrap(EpochInetSocketAddress address,
                          Message message)

  Method which sends a bootstrap message across the wire.

  Parameters:
    `message` - The message to send
    `address` - The address to send the message to

### send

    public void send(EpochInetSocketAddress address,
                     Message message)

  Method which sends a message across the wire.

  Parameters:
    `message` - The message to send
    `address` - The address to send the message to

### ping

    public void ping(EpochInetSocketAddress address)

  Method which suggests a ping to the remote node.

  Parameters:
    `address` - DESCRIBE THE PARAMETER

### checkLiveness

    public void checkLiveness(EpochInetSocketAddress address)

  Method which FORCES a check of liveness of the remote node. Note that this method should ONLY be called by internal Pastry maintenance algorithms - this is NOT to be used by applications. Doing so will likely cause a blowup of liveness traffic.

  Parameters:
    `address` - DESCRIBE THE PARAMETER

### proximity

    public int proximity(EpochInetSocketAddress address)

  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

### markDead

    protected void markDead(SourceRoute route)

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

  Parameters:
    `route` - The now-dead route

### markDead

    protected void markDead(EpochInetSocketAddress address)

  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

### 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-live route

### 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

### reroute

    protected void reroute(EpochInetSocketAddress address,
                           Message m)

  Reroutes the given message. If this node is alive, send() is called. If this node is not alive and the message is a route message, it is rerouted. Otherwise, the message is dropped.

  Parameters:
    `m` - The message
    `address` - The address of the remote node

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