JdpController is responsible to create and manage a broadcast loop.

Other part of code has no access to broadcast loop and have to use provided static methods startDiscoveryService and stopDiscoveryService

startDiscoveryService could be called multiple times as it stops the running service if it is necessary. Call to stopDiscoveryService ignored if service isn't run.

System properties below could be used to control broadcast loop behavior. Property below have to be set explicitly in command line. It's not possible to set it in management.config file. Careless changes of these properties could lead to security or network issues.

com.sun.management.jdp.ttl - set ttl for broadcast packet
com.sun.management.jdp.pause - set broadcast interval in seconds
com.sun.management.jdp.source_addr - an address of interface to use for broadcast

null parameters values are filtered out on JdpPacketWriter level and corresponding keys are not placed to packet.

Nested and Inner Type Summary

Modifier and Type	Class and Description
private static class	JdpController.JDPControllerRunner

Field Summary

Modifier and Type	Field and Description
private static JdpController.JDPControllerRunner	controller

Constructor Summary

Access	Constructor and Description
private	JdpController()

Method Summary

Modifier and Type	Method and Description
private static InetAddress	getInetAddress(String val, InetAddress dflt, String msg)
private static int	getInteger(String val, int dflt, String msg)
private static Long	getProcessId()
public static synchronized void	startDiscoveryService(InetAddress - multicast group address address, int - udp port to use port, String - name of running JVM instance instanceName, String - JMX service url url) Starts discovery service
public static synchronized void	stopDiscoveryService() Stop running discovery service, it's safe to attempt to stop not started service

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

controller	back to summary
private static JdpController.JDPControllerRunner controller

Constructor Detail

JdpController	back to summary
private JdpController()

Method Detail

getInetAddress	back to summary
private static InetAddress getInetAddress(String val, InetAddress dflt, String msg) throws JdpException

getInteger	back to summary
private static int getInteger(String val, int dflt, String msg) throws JdpException

getProcessId	back to summary
private static Long getProcessId()

startDiscoveryService	back to summary
public static synchronized void startDiscoveryService(InetAddress address, int port, String instanceName, String url) throws IOException, JdpException Starts discovery service Parameters address:InetAddress - multicast group address port:int - udp port to use instanceName:String - name of running JVM instance url:String - JMX service url

startDiscoveryService

back to summary

public static synchronized void startDiscoveryService(InetAddress address, int port, String instanceName, String url) throws IOException, JdpException

Starts discovery service

Parameters

address:InetAddress: - multicast group address
port:int: - udp port to use
instanceName:String: - name of running JVM instance
url:String: - JMX service url

stopDiscoveryService	back to summary
public static synchronized void stopDiscoveryService() Stop running discovery service, it's safe to attempt to stop not started service

sun.management.jdp back to summary

private Class JdpController.JDPControllerRunner

Class Inheritance

extends Object
implements Runnable

java.lang.Object
sun.management.jdp.JdpController.JDPControllerRunner

All Implemented Interfaces

java.lang.Runnable

Field Summary

Modifier and Type	Field and Description
private final JdpBroadcaster	bcast
private final JdpJmxPacket	packet
private final int	pause
private volatile boolean	shutdown

Constructor Summary

Access	Constructor and Description
private	JDPControllerRunner(JdpBroadcaster bcast, JdpJmxPacket packet, int pause)

Method Summary

Modifier and Type	Method and Description
public void	run() Implements java.lang.Runnable.run. Runs this operation.
public void	stop()

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

bcast	back to summary
private final JdpBroadcaster bcast

packet	back to summary
private final JdpJmxPacket packet

pause	back to summary
private final int pause

shutdown	back to summary
private volatile boolean shutdown

Constructor Detail

JDPControllerRunner	back to summary
private JDPControllerRunner(JdpBroadcaster bcast, JdpJmxPacket packet, int pause)

Method Detail

run	back to summary
public void run() Implements java.lang.Runnable.run. Doc from java.lang.Runnable.run. Runs this operation. Annotations @Override

run

back to summary

public void run()

Implements java.lang.Runnable.run.

Doc from java.lang.Runnable.run.

Runs this operation.

Annotations

@Override

stop	back to summary
public void stop()

public final Class JdpController

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private Class JdpController.JDPControllerRunner

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail