net.rmi.rmiSynth
Class HostManager

java.lang.Object
  java.rmi.server.RemoteObject
      java.rmi.server.RemoteServer
          java.rmi.server.UnicastRemoteObject
              net.rmi.rmiSynth.HostManager

All Implemented Interfaces:

java.io.Serializable, java.rmi.Remote, HostManagerInterface

public class HostManager
extends java.rmi.server.UnicastRemoteObject
implements HostManagerInterface

The HostManager is invoked remotely by unicast remote protocol. New workers that enter into the grid must know the IP address of the HostManager We need to provide a leasing mechanism that expires a host. First start the host manager. Then start the computation servers. Finally start the compute client

See Also:

Serialized Form

Field Summary

static java.lang.String

hostManagerAddress

Method Summary

void	add(Host h)
boolean	contains(Host h)
static boolean	equals(Host h1, Host h2)
Host[]	getHosts()
Host	getNextHost() getNextHost returns the next host in the list, with wrap-around.
static HostManagerInterface	getProxy() Use getProxy to gain remote access to the host manager.
int	indexOf(Host h, int index)
static void	main(java.lang.String[] args)
void	remove(Host h)
void	removeOldHosts()
void	update(Host h)

Methods inherited from class java.rmi.server.UnicastRemoteObject

clone, exportObject, exportObject, exportObject, unexportObject

Methods inherited from class java.rmi.server.RemoteServer

getClientHost, getLog, setLog

Methods inherited from class java.rmi.server.RemoteObject

equals, getRef, hashCode, toString, toStub

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

hostManagerAddress

public static final java.lang.String hostManagerAddress

See Also:

Constant Field Values

Method Detail

getHosts

public Host[] getHosts()
                throws java.rmi.RemoteException

Specified by:

getHosts in interface HostManagerInterface

Throws:

java.rmi.RemoteException

getProxy

public static HostManagerInterface getProxy()

Use getProxy to gain remote access to the host manager. If proxy was already obtained, this invocation will not look it up again.

add

public void add(Host h)
         throws java.rmi.RemoteException

Specified by:

add in interface HostManagerInterface

Throws:

java.rmi.RemoteException

contains

public boolean contains(Host h)

indexOf

public int indexOf(Host h,
                   int index)

equals

public static boolean equals(Host h1,
                             Host h2)

getNextHost

public Host getNextHost()
                 throws java.rmi.RemoteException

getNextHost returns the next host in the list, with wrap-around.

Specified by:

getNextHost in interface HostManagerInterface

Throws:

java.rmi.RemoteException

removeOldHosts

public void removeOldHosts()

remove

public void remove(Host h)

update

public void update(Host h)
            throws java.rmi.RemoteException

Throws:

java.rmi.RemoteException

main

public static void main(java.lang.String[] args)