org.apache.activemq.transport.discovery.zeroconf
Class ZeroconfDiscoveryAgent

java.lang.Object
  org.apache.activemq.transport.discovery.zeroconf.ZeroconfDiscoveryAgent

All Implemented Interfaces:

java.util.EventListener, ServiceListener, Service, DiscoveryAgent

public class ZeroconfDiscoveryAgent
extends java.lang.Object
implements DiscoveryAgent, ServiceListener

A DiscoveryAgent using Zeroconf via the jmDNS library

Constructor Summary

ZeroconfDiscoveryAgent()

Method Summary

void	addService(JmDNS jmDNS, java.lang.String type, java.lang.String name)
protected JmDNS	createJmDNS()
protected java.net.InetAddress	createLocalAddress()
protected ServiceInfo	createServiceInfo(java.lang.String name, java.util.Map map)
java.lang.String	getGroup()
JmDNS	getJmdns()
java.net.InetAddress	getLocalAddress()
java.lang.String	getLocalhost()
int	getPriority()
java.lang.String	getType()
int	getWeight()
void	registerService(java.lang.String name) register a service
void	removeService(JmDNS jmDNS, java.lang.String type, java.lang.String name)
void	resolveService(JmDNS jmDNS, java.lang.String type, java.lang.String name, ServiceInfo serviceInfo)
void	serviceAdded(ServiceEvent event) A service has been added.
void	serviceFailed(DiscoveryEvent event) A process actively using a service may see it go down before the DiscoveryAgent notices the service's failure.
void	serviceRemoved(ServiceEvent event) A service has been removed.
void	serviceResolved(ServiceEvent event) A service has been resolved.
void	setDiscoveryListener(DiscoveryListener listener) Sets the discovery listener
void	setGroup(java.lang.String group)
void	setJmdns(JmDNS jmdns)
void	setLocalAddress(java.net.InetAddress localAddress)
void	setLocalhost(java.lang.String localhost)
void	setPriority(int priority)
void	setWeight(int weight)
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Constructor Detail

ZeroconfDiscoveryAgent

public ZeroconfDiscoveryAgent()

Method Detail

start

public void start()
           throws java.lang.Exception

Specified by:

start in interface Service

Throws:

java.lang.Exception

stop

public void stop()

Specified by:

stop in interface Service

registerService

public void registerService(java.lang.String name)
                     throws java.io.IOException

Description copied from interface: DiscoveryAgent

register a service

Specified by:

registerService in interface DiscoveryAgent

Throws:

java.io.IOException

addService

public void addService(JmDNS jmDNS,
                       java.lang.String type,
                       java.lang.String name)

removeService

public void removeService(JmDNS jmDNS,
                          java.lang.String type,
                          java.lang.String name)

serviceAdded

public void serviceAdded(ServiceEvent event)

Description copied from interface: ServiceListener

A service has been added.

Specified by:

serviceAdded in interface ServiceListener

Parameters:

event - The ServiceEvent providing the name and fully qualified type of the service.

serviceRemoved

public void serviceRemoved(ServiceEvent event)

Description copied from interface: ServiceListener

A service has been removed.

Specified by:

serviceRemoved in interface ServiceListener

Parameters:

event - The ServiceEvent providing the name and fully qualified type of the service.

serviceResolved

public void serviceResolved(ServiceEvent event)

Description copied from interface: ServiceListener

A service has been resolved. Its details are now available in the ServiceInfo record.

Specified by:

serviceResolved in interface ServiceListener

Parameters:

event - The ServiceEvent providing the name, the fully qualified type of the service, and the service info record, or null if the service could not be resolved.

resolveService

public void resolveService(JmDNS jmDNS,
                           java.lang.String type,
                           java.lang.String name,
                           ServiceInfo serviceInfo)

getPriority

public int getPriority()

setPriority

public void setPriority(int priority)

getWeight

public int getWeight()

setWeight

public void setWeight(int weight)

getJmdns

public JmDNS getJmdns()
               throws java.io.IOException

Throws:

java.io.IOException

setJmdns

public void setJmdns(JmDNS jmdns)

getLocalAddress

public java.net.InetAddress getLocalAddress()
                                     throws java.net.UnknownHostException

Throws:

java.net.UnknownHostException

setLocalAddress

public void setLocalAddress(java.net.InetAddress localAddress)

getLocalhost

public java.lang.String getLocalhost()

setLocalhost

public void setLocalhost(java.lang.String localhost)

createServiceInfo

protected ServiceInfo createServiceInfo(java.lang.String name,
                                        java.util.Map map)

createJmDNS

protected JmDNS createJmDNS()
                     throws java.io.IOException

Throws:

java.io.IOException

createLocalAddress

protected java.net.InetAddress createLocalAddress()
                                           throws java.net.UnknownHostException

Throws:

java.net.UnknownHostException

setDiscoveryListener

public void setDiscoveryListener(DiscoveryListener listener)

Description copied from interface: DiscoveryAgent

Sets the discovery listener

Specified by:

setDiscoveryListener in interface DiscoveryAgent

getGroup

public java.lang.String getGroup()

setGroup

public void setGroup(java.lang.String group)

getType

public java.lang.String getType()

serviceFailed

public void serviceFailed(DiscoveryEvent event)
                   throws java.io.IOException

Description copied from interface: DiscoveryAgent

A process actively using a service may see it go down before the DiscoveryAgent notices the service's failure. That process can use this method to notify the DiscoveryAgent of the failure so that other listeners of this DiscoveryAgent can also be made aware of the failure.

Specified by:

serviceFailed in interface DiscoveryAgent

Throws:

java.io.IOException