org.jgroups.util
Class PortsManager

java.lang.Object
  org.jgroups.util.PortsManager

public class PortsManager
extends java.lang.Object

Maintains a list of ports used on this host, associated with time stamps. The ports are persisted into the temp file system.

Version:

$Id: PortsManager.java,v 1.6 2009/01/05 07:38:06 belaban Exp $

Author:

Bela Ban

Constructor Summary

PortsManager()

PortsManager(long expiry_time)

PortsManager(long expiry_time, java.lang.String ports_file)

PortsManager(long expiry_time, java.lang.String filename, java.lang.String temp_dir)

PortsManager(java.lang.String ports_file)

Method Summary

void	deleteFile() Deletes the underlying file.
long	getExpiryTime()
int	getNextAvailablePort(int start_port) Loads the file, weeds out expired ports, returns the next available port and saves the new port in the file
void	removePort(int port) Loads the file, removes the port (if existent) and closes the file again
void	setExpiryTime(long expiry_time)
void	updatePort(int port) Updates the timestamp for the given port

Methods inherited from class java.lang.Object

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

Constructor Detail

PortsManager

public PortsManager()

PortsManager

public PortsManager(long expiry_time)

PortsManager

public PortsManager(java.lang.String ports_file)

PortsManager

public PortsManager(long expiry_time,
                    java.lang.String ports_file)

PortsManager

public PortsManager(long expiry_time,
                    java.lang.String filename,
                    java.lang.String temp_dir)

Method Detail

getExpiryTime

public long getExpiryTime()

setExpiryTime

public void setExpiryTime(long expiry_time)

getNextAvailablePort

public int getNextAvailablePort(int start_port)

Loads the file, weeds out expired ports, returns the next available port and saves the new port in the file

removePort

public void removePort(int port)

Loads the file, removes the port (if existent) and closes the file again

updatePort

public void updatePort(int port)

Updates the timestamp for the given port

Parameters:

port -

deleteFile

public void deleteFile()

Deletes the underlying file. Used for unit testing, not recommended for regular use !