org.apache.sling.distribution.journal.impl.discovery

Class DiscoveryService

java.lang.Object

org.apache.sling.distribution.journal.impl.discovery.DiscoveryService

All Implemented Interfaces:

Runnable

@ParametersAreNonnullByDefault
public class DiscoveryService
extends Object
implements Runnable

Listens for discovery messages and tracks presence of Subscribers as well as the last processed offset of each Subscriber This component is only activated when there is at least one DistributionSubscriber agent configured. This component is meant to be shared by Publisher agents.

Field Summary

Fields

Modifier and Type	Field and Description
static String	KEY_MESSAGE
static String	TOPIC_DISTRIBUTION_LOG

Constructor Summary

Constructors

Constructor and Description
DiscoveryService()
DiscoveryService(org.apache.sling.distribution.journal.MessagingProvider messagingProvider, TopologyChangeHandler topologyChangeHandler, Topics topics, org.osgi.service.event.EventAdmin eventAdmin)

Method Summary

Modifier and Type	Method and Description
void	activate(org.osgi.framework.BundleContext context)
void	deactivate()
TopologyView	getTopologyView()
void	handleDiscovery(org.apache.sling.distribution.journal.MessageInfo info, org.apache.sling.distribution.journal.messages.DiscoveryMessage disMsg)
void	handleLog(org.apache.sling.distribution.journal.MessageInfo info, org.apache.sling.distribution.journal.messages.LogMessage logMsg)
void	run()

Methods inherited from class java.lang.Object

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

Field Detail

KEY_MESSAGE

public static final String KEY_MESSAGE

See Also:

Constant Field Values

TOPIC_DISTRIBUTION_LOG

public static final String TOPIC_DISTRIBUTION_LOG

See Also:

Constant Field Values

Constructor Detail

DiscoveryService

public DiscoveryService()

DiscoveryService

public DiscoveryService(org.apache.sling.distribution.journal.MessagingProvider messagingProvider,
                        TopologyChangeHandler topologyChangeHandler,
                        Topics topics,
                        org.osgi.service.event.EventAdmin eventAdmin)

Method Detail

activate

public void activate(org.osgi.framework.BundleContext context)

deactivate

public void deactivate()

getTopologyView

public TopologyView getTopologyView()

run

public void run()

Specified by:

run in interface Runnable

handleDiscovery

public void handleDiscovery(org.apache.sling.distribution.journal.MessageInfo info,
                            org.apache.sling.distribution.journal.messages.DiscoveryMessage disMsg)

handleLog

public void handleLog(org.apache.sling.distribution.journal.MessageInfo info,
                      org.apache.sling.distribution.journal.messages.LogMessage logMsg)