Class CamelContextTracker

java.lang.Object

org.apache.camel.spi.CamelContextTracker

All Implemented Interfaces:

Closeable, AutoCloseable

public class CamelContextTracker
extends Object
implements Closeable

Tracks the creation and destruction of CamelContext instances across the JVM.

A tracker is activated by calling open() (and deactivated via close()); while open it is notified through contextCreated(CamelContext) and contextDestroyed(CamelContext) for every context that passes its CamelContextTracker.Filter (by default, non-proxy contexts). Registration is global and static, making this suited to cross-cutting concerns such as metrics or diagnostics that must observe all contexts rather than a single CamelContext. Subclass and override the callbacks to react.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	CamelContextTracker.Filter	Decides which CamelContext instances a CamelContextTracker is notified about.

Constructor Summary

Constructors

Constructor	Description
CamelContextTracker()
CamelContextTracker(CamelContextTracker.Filter filter)

Method Summary

Modifier and Type	Method	Description
boolean	accept(CamelContext camelContext)	Called to determine whether this tracker should accept the given context.
final void	close()	Closes the tracker so it not longer tracks.
void	contextCreated(CamelContext camelContext)	Called when a context is created.
void	contextDestroyed(CamelContext camelContext)	Called when a context has been shutdown.
static void	notifyContextCreated(CamelContext camelContext)	Notifies all open trackers that the given CamelContext has been created.
static void	notifyContextDestroyed(CamelContext camelContext)	Notifies all open trackers that the given CamelContext has been destroyed.
final void	open()	Opens the tracker to start tracking when new CamelContext is created or destroyed.

Methods inherited from class Object

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

Constructor Details

CamelContextTracker

public CamelContextTracker()

CamelContextTracker

public CamelContextTracker(CamelContextTracker.Filter filter)

Method Details

accept

public boolean accept(CamelContext camelContext)

Called to determine whether this tracker should accept the given context.

contextCreated

public void contextCreated(CamelContext camelContext)

Called when a context is created.

contextDestroyed

public void contextDestroyed(CamelContext camelContext)

Called when a context has been shutdown.

open

public final void open()

Opens the tracker to start tracking when new CamelContext is created or destroyed.

close

public final void close()

Closes the tracker so it not longer tracks.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

notifyContextCreated

public static void notifyContextCreated(CamelContext camelContext)

Notifies all open trackers that the given CamelContext has been created. Called by Camel; exceptions from trackers are logged and ignored.

Parameters:

camelContext - the created camel context

notifyContextDestroyed

public static void notifyContextDestroyed(CamelContext camelContext)

Notifies all open trackers that the given CamelContext has been destroyed. Called by Camel; exceptions from trackers are logged and ignored.

Parameters:

camelContext - the destroyed camel context