Package org.jgroups.util

Class ResourceManager

java.lang.Object

org.jgroups.util.ResourceManager

public final class ResourceManager
extends Object

Manages resources such as multicast addresses and multicast ports, and TCP ports. This class is mainly used for running unit tests in parallel (TestNG) and preventing clusters intended to be separate from joining each other.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	ResourceManager.IpAddressRep
(package private) static class	ResourceManager.IPv4AddressRep	Representation of an IPv4 address
(package private) static class	ResourceManager.IPv6AddressRep	Representation of an IPv6 address

Field Summary

Fields

Modifier and Type	Field	Description
private static short	mcast_port
private static final ResourceManager.IpAddressRep	rep
private static final SocketFactory	socket_factory
private static int	tcp_port

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ResourceManager()

Method Summary

Modifier and Type	Method	Description
static String	getNextMulticastAddress()	Returns the next available multicast address, e.g.
static short	getNextMulticastPort(InetAddress bind_addr)
static int	getNextTcpPort(InetAddress bind_addr)
private static int	getNextTCPPort(InetAddress bind_addr, int start_port)
static List<Integer>	getNextTcpPorts(InetAddress bind_addr, int num_requested_ports)
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Field Details

rep

private static final ResourceManager.IpAddressRep rep

mcast_port

private static short mcast_port

tcp_port

private static int tcp_port

socket_factory

private static final SocketFactory socket_factory

Constructor Details

ResourceManager

private ResourceManager()

Method Details

getNextMulticastAddress

public static String getNextMulticastAddress()

Returns the next available multicast address, e.g. "239.1.2.3". This class is a JVM singleton

Returns:

getNextMulticastPort

public static short getNextMulticastPort(InetAddress bind_addr)
                                  throws Exception

Throws:

Exception

getNextTcpPorts

public static List<Integer> getNextTcpPorts(InetAddress bind_addr,
 int num_requested_ports)
                                     throws Exception

Throws:

Exception

getNextTcpPort

public static int getNextTcpPort(InetAddress bind_addr)
                          throws Exception

Throws:

Exception

getNextTCPPort

private static int getNextTCPPort(InetAddress bind_addr,
 int start_port)
                           throws Exception

Throws:

Exception

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception