uk.ac.ic.doc.automed.p2p.overlay
Class OverlayController

java.lang.Object
  uk.ac.ic.doc.automed.p2p.overlay.OverlayController

public class OverlayController
extends java.lang.Object

OverlayController.java

The main class reponsible for establishing a new [contacting an existing] overlay network.

Author:

Duc M Le dmle@doc.ic.ac.uk
Created on August 14, 2006
Department of Computing, Imperial College

Field Summary

static int	DEF_NUM_HOSTS
static java.lang.String	STAT_COLLECTOR_ADDRESS_AND_PORT
static long	WAIT_BEFORE_ACCESS

Method Summary

static OverlayController	getInstance(int numHosts)
static OverlayController	getInstance(int startNum, int numHosts)
int	getNumHosts()
java.lang.String[]	getVirtualHosts()
ow.dht.DHT	startProcess(ow.id.ID key, java.lang.String joinHost, java.lang.String selfHost) Start a DHT host with a pre-configured ID
static void	waitBeforeAccess() Wait a bit before access (call this method before each call to put() inside a loop)

Methods inherited from class java.lang.Object

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

Field Detail

DEF_NUM_HOSTS

public static final int DEF_NUM_HOSTS

See Also:

Constant Field Values

WAIT_BEFORE_ACCESS

public static final long WAIT_BEFORE_ACCESS

See Also:

Constant Field Values

STAT_COLLECTOR_ADDRESS_AND_PORT

public static final java.lang.String STAT_COLLECTOR_ADDRESS_AND_PORT

See Also:

Constant Field Values

Method Detail

getInstance

public static OverlayController getInstance(int numHosts)

getInstance

public static OverlayController getInstance(int startNum,
                                            int numHosts)

Parameters:

startNum - starting host index number

numHosts - number of hosts to start

getVirtualHosts

public java.lang.String[] getVirtualHosts()

getNumHosts

public int getNumHosts()

startProcess

public ow.dht.DHT startProcess(ow.id.ID key,
                               java.lang.String joinHost,
                               java.lang.String selfHost)
                        throws OverlayException

Start a DHT host with a pre-configured ID

Parameters:

key - the ID object

joinHost - the existing DHT host to contact
can contain both host and port like so: localhost:8800

selfHost - for this DHT process, can contain both host and port
like so: localhost:8801

Returns:

the DHT process ID as generated by the overlay engine

Throws:

OverlayException

waitBeforeAccess

public static void waitBeforeAccess()

Wait a bit before access (call this method before each call to put() inside a loop)