Add home grown event bus

This commit is contained in:
md_5 2013-05-14 11:30:08 +10:00
parent aefe3333a9
commit 21a354fa75
9 changed files with 238 additions and 457 deletions

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@ -31,6 +31,12 @@
<version>1.7.14</version> <version>1.7.14</version>
<scope>compile</scope> <scope>compile</scope>
</dependency> </dependency>
<dependency>
<groupId>net.md-5</groupId>
<artifactId>bungeecord-event</artifactId>
<version>${project.version}</version>
<scope>compile</scope>
</dependency>
<dependency> <dependency>
<groupId>org.yaml</groupId> <groupId>org.yaml</groupId>
<artifactId>snakeyaml</artifactId> <artifactId>snakeyaml</artifactId>

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@ -1,111 +0,0 @@
/*
* Copyright (C) 2007 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.common.eventbus;
import com.google.common.base.Throwables;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Multimap;
import com.google.common.reflect.TypeToken;
import com.google.common.util.concurrent.UncheckedExecutionException;
import java.lang.reflect.Method;
import java.util.Set;
/**
* A {@link HandlerFindingStrategy} for collecting all event handler methods that are marked with
* the {@link Subscribe} annotation.
*
* @author Cliff Biffle
* @author Louis Wasserman
*/
class AnnotatedHandlerFinder implements HandlerFindingStrategy {
/**
* A thread-safe cache that contains the mapping from each class to all methods in that class and
* all super-classes, that are annotated with {@code @Subscribe}. The cache is shared across all
* instances of this class; this greatly improves performance if multiple EventBus instances are
* created and objects of the same class are registered on all of them.
*/
private static final LoadingCache<Class<?>, ImmutableList<Method>> handlerMethodsCache =
CacheBuilder.newBuilder()
.weakKeys()
.build(new CacheLoader<Class<?>, ImmutableList<Method>>() {
@Override
public ImmutableList<Method> load(Class<?> concreteClass) throws Exception {
return getAnnotatedMethodsInternal(concreteClass);
}
});
/**
* {@inheritDoc}
*
* This implementation finds all methods marked with a {@link Subscribe} annotation.
*/
@Override
public Multimap<Class<?>, EventHandler> findAllHandlers(Object listener) {
Multimap<Class<?>, EventHandler> methodsInListener = HashMultimap.create();
Class<?> clazz = listener.getClass();
for (Method method : getAnnotatedMethods(clazz)) {
Class<?>[] parameterTypes = method.getParameterTypes();
Class<?> eventType = parameterTypes[0];
EventHandler handler = new EventHandler(listener, method);
methodsInListener.put(eventType, handler);
}
return methodsInListener;
}
private static ImmutableList<Method> getAnnotatedMethods(Class<?> clazz) {
try {
return handlerMethodsCache.getUnchecked(clazz);
} catch (UncheckedExecutionException e) {
throw Throwables.propagate(e.getCause());
}
}
private static ImmutableList<Method> getAnnotatedMethodsInternal(Class<?> clazz) {
Set<? extends Class<?>> supers = TypeToken.of(clazz).getTypes().rawTypes();
ImmutableList.Builder<Method> result = ImmutableList.builder();
for (Method method : clazz.getMethods()) {
/*
* Iterate over each distinct method of {@code clazz}, checking if it is annotated with
* @Subscribe by any of the superclasses or superinterfaces that declare it.
*/
for (Class<?> c : supers) {
try {
Method m = c.getMethod(method.getName(), method.getParameterTypes());
if (m.isAnnotationPresent(Subscribe.class)) {
Class<?>[] parameterTypes = method.getParameterTypes();
if (parameterTypes.length != 1) {
throw new IllegalArgumentException("Method " + method
+ " has @Subscribe annotation, but requires " + parameterTypes.length
+ " arguments. Event handler methods must require a single argument.");
}
Class<?> eventType = parameterTypes[0];
result.add(method);
break;
}
} catch (NoSuchMethodException ignored) {
// Move on.
}
}
}
return result.build();
}
}

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@ -1,330 +0,0 @@
/*
* Copyright (C) 2007 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.common.eventbus;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.annotations.Beta;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Throwables;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.Multimap;
import com.google.common.collect.SetMultimap;
import com.google.common.reflect.TypeToken;
import com.google.common.util.concurrent.UncheckedExecutionException;
import java.lang.reflect.InvocationTargetException;
import java.util.Collection;
import java.util.LinkedList;
import java.util.Map.Entry;
import java.util.Queue;
import java.util.Set;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Dispatches events to listeners, and provides ways for listeners to register
* themselves.
*
* <p>The EventBus allows publish-subscribe-style communication between
* components without requiring the components to explicitly register with one
* another (and thus be aware of each other). It is designed exclusively to
* replace traditional Java in-process event distribution using explicit
* registration. It is <em>not</em> a general-purpose publish-subscribe system,
* nor is it intended for interprocess communication.
*
* <h2>Receiving Events</h2>
* To receive events, an object should:<ol>
* <li>Expose a public method, known as the <i>event handler</i>, which accepts
* a single argument of the type of event desired;</li>
* <li>Mark it with a {@link Subscribe} annotation;</li>
* <li>Pass itself to an EventBus instance's {@link #register(Object)} method.
* </li>
* </ol>
*
* <h2>Posting Events</h2>
* To post an event, simply provide the event object to the
* {@link #post(Object)} method. The EventBus instance will determine the type
* of event and route it to all registered listeners.
*
* <p>Events are routed based on their type &mdash; an event will be delivered
* to any handler for any type to which the event is <em>assignable.</em> This
* includes implemented interfaces, all superclasses, and all interfaces
* implemented by superclasses.
*
* <p>When {@code post} is called, all registered handlers for an event are run
* in sequence, so handlers should be reasonably quick. If an event may trigger
* an extended process (such as a database load), spawn a thread or queue it for
* later. (For a convenient way to do this, use an {@link AsyncEventBus}.)
*
* <h2>Handler Methods</h2>
* Event handler methods must accept only one argument: the event.
*
* <p>Handlers should not, in general, throw. If they do, the EventBus will
* catch and log the exception. This is rarely the right solution for error
* handling and should not be relied upon; it is intended solely to help find
* problems during development.
*
* <p>The EventBus guarantees that it will not call a handler method from
* multiple threads simultaneously, unless the method explicitly allows it by
* bearing the {@link AllowConcurrentEvents} annotation. If this annotation is
* not present, handler methods need not worry about being reentrant, unless
* also called from outside the EventBus.
*
* <h2>Dead Events</h2>
* If an event is posted, but no registered handlers can accept it, it is
* considered "dead." To give the system a second chance to handle dead events,
* they are wrapped in an instance of {@link DeadEvent} and reposted.
*
* <p>If a handler for a supertype of all events (such as Object) is registered,
* no event will ever be considered dead, and no DeadEvents will be generated.
* Accordingly, while DeadEvent extends {@link Object}, a handler registered to
* receive any Object will never receive a DeadEvent.
*
* <p>This class is safe for concurrent use.
*
* <p>See the Guava User Guide article on <a href=
* "http://code.google.com/p/guava-libraries/wiki/EventBusExplained">
* {@code EventBus}</a>.
*
* @author Cliff Biffle
* @since 10.0
*/
@Beta
public class EventBus {
/**
* A thread-safe cache for flattenHierarchy(). The Class class is immutable. This cache is shared
* across all EventBus instances, which greatly improves performance if multiple such instances
* are created and objects of the same class are posted on all of them.
*/
private static final LoadingCache<Class<?>, Set<Class<?>>> flattenHierarchyCache =
CacheBuilder.newBuilder()
.weakKeys()
.build(new CacheLoader<Class<?>, Set<Class<?>>>() {
@SuppressWarnings({"unchecked", "rawtypes"}) // safe cast
@Override
public Set<Class<?>> load(Class<?> concreteClass) {
return (Set) TypeToken.of(concreteClass).getTypes().rawTypes();
}
});
/**
* All registered event handlers, indexed by event type.
*
* <p>This SetMultimap is NOT safe for concurrent use; all access should be
* made after acquiring a read or write lock via {@link #handlersByTypeLock}.
*/
private final SetMultimap<Class<?>, EventHandler> handlersByType =
HashMultimap.create();
private final ReadWriteLock handlersByTypeLock = new ReentrantReadWriteLock();
/**
* Logger for event dispatch failures. Named by the fully-qualified name of
* this class, followed by the identifier provided at construction.
*/
private final Logger logger;
/**
* Strategy for finding handler methods in registered objects. Currently,
* only the {@link AnnotatedHandlerFinder} is supported, but this is
* encapsulated for future expansion.
*/
private final HandlerFindingStrategy finder = new AnnotatedHandlerFinder();
/** queues of events for the current thread to dispatch */
private final ThreadLocal<Queue<EventWithHandler>> eventsToDispatch =
new ThreadLocal<Queue<EventWithHandler>>() {
@Override protected Queue<EventWithHandler> initialValue() {
return new LinkedList<EventWithHandler>();
}
};
/**
* Creates a new EventBus named "default".
*/
public EventBus() {
this("default");
}
/**
* Creates a new EventBus with the given {@code identifier}.
*
* @param identifier a brief name for this bus, for logging purposes. Should
* be a valid Java identifier.
*/
public EventBus(String identifier) {
logger = Logger.getLogger(EventBus.class.getName() + "." + checkNotNull(identifier));
}
/**
* Registers all handler methods on {@code object} to receive events.
* Handler methods are selected and classified using this EventBus's
* {@link HandlerFindingStrategy}; the default strategy is the
* {@link AnnotatedHandlerFinder}.
*
* @param object object whose handler methods should be registered.
*/
public void register(Object object) {
Multimap<Class<?>, EventHandler> methodsInListener =
finder.findAllHandlers(object);
handlersByTypeLock.writeLock().lock();
try {
handlersByType.putAll(methodsInListener);
} finally {
handlersByTypeLock.writeLock().unlock();
}
}
/**
* Unregisters all handler methods on a registered {@code object}.
*
* @param object object whose handler methods should be unregistered.
* @throws IllegalArgumentException if the object was not previously registered.
*/
public void unregister(Object object) {
Multimap<Class<?>, EventHandler> methodsInListener = finder.findAllHandlers(object);
for (Entry<Class<?>, Collection<EventHandler>> entry : methodsInListener.asMap().entrySet()) {
Class<?> eventType = entry.getKey();
Collection<EventHandler> eventMethodsInListener = entry.getValue();
handlersByTypeLock.writeLock().lock();
try {
Set<EventHandler> currentHandlers = handlersByType.get(eventType);
if (!currentHandlers.containsAll(eventMethodsInListener)) {
throw new IllegalArgumentException(
"missing event handler for an annotated method. Is " + object + " registered?");
}
currentHandlers.removeAll(eventMethodsInListener);
} finally {
handlersByTypeLock.writeLock().unlock();
}
}
}
/**
* Posts an event to all registered handlers. This method will return
* successfully after the event has been posted to all handlers, and
* regardless of any exceptions thrown by handlers.
*
* <p>If no handlers have been subscribed for {@code event}'s class, and
* {@code event} is not already a {@link DeadEvent}, it will be wrapped in a
* DeadEvent and reposted.
*
* @param event event to post.
*/
public void post(Object event) {
Set<Class<?>> dispatchTypes = flattenHierarchy(event.getClass());
boolean dispatched = false;
for (Class<?> eventType : dispatchTypes) {
handlersByTypeLock.readLock().lock();
try {
Set<EventHandler> wrappers = handlersByType.get(eventType);
if (!wrappers.isEmpty()) {
dispatched = true;
for (EventHandler wrapper : wrappers) {
enqueueEvent(event, wrapper);
}
}
} finally {
handlersByTypeLock.readLock().unlock();
}
}
if (!dispatched && !(event instanceof DeadEvent)) {
post(new DeadEvent(this, event));
}
dispatchQueuedEvents();
}
/**
* Queue the {@code event} for dispatch during
* {@link #dispatchQueuedEvents()}. Events are queued in-order of occurrence
* so they can be dispatched in the same order.
*/
void enqueueEvent(Object event, EventHandler handler) {
eventsToDispatch.get().offer(new EventWithHandler(event, handler));
}
/**
* Drain the queue of events to be dispatched. As the queue is being drained,
* new events may be posted to the end of the queue.
*/
void dispatchQueuedEvents() {
try {
Queue<EventWithHandler> events = eventsToDispatch.get();
EventWithHandler eventWithHandler;
while ((eventWithHandler = events.poll()) != null) {
dispatch(eventWithHandler.event, eventWithHandler.handler);
}
} finally {
eventsToDispatch.remove();
}
}
/**
* Dispatches {@code event} to the handler in {@code wrapper}. This method
* is an appropriate override point for subclasses that wish to make
* event delivery asynchronous.
*
* @param event event to dispatch.
* @param wrapper wrapper that will call the handler.
*/
void dispatch(Object event, EventHandler wrapper) {
try {
wrapper.handleEvent(event);
} catch (InvocationTargetException e) {
logger.log(Level.SEVERE,
"Could not dispatch event: " + event + " to handler " + wrapper, e);
}
}
/**
* Flattens a class's type hierarchy into a set of Class objects. The set
* will include all superclasses (transitively), and all interfaces
* implemented by these superclasses.
*
* @param concreteClass class whose type hierarchy will be retrieved.
* @return {@code clazz}'s complete type hierarchy, flattened and uniqued.
*/
@VisibleForTesting
Set<Class<?>> flattenHierarchy(Class<?> concreteClass) {
try {
return flattenHierarchyCache.getUnchecked(concreteClass);
} catch (UncheckedExecutionException e) {
throw Throwables.propagate(e.getCause());
}
}
/** simple struct representing an event and it's handler */
static class EventWithHandler {
final Object event;
final EventHandler handler;
public EventWithHandler(Object event, EventHandler handler) {
this.event = checkNotNull(event);
this.handler = checkNotNull(handler);
}
}
}

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@ -1,10 +1,10 @@
package net.md_5.bungee.api.plugin; package net.md_5.bungee.api.plugin;
import com.google.common.base.Preconditions; import com.google.common.base.Preconditions;
import com.google.common.eventbus.EventBus;
import com.google.common.eventbus.Subscribe; import com.google.common.eventbus.Subscribe;
import java.io.File; import java.io.File;
import java.io.InputStream; import java.io.InputStream;
import java.lang.reflect.Method;
import java.net.URL; import java.net.URL;
import java.net.URLClassLoader; import java.net.URLClassLoader;
import java.util.Arrays; import java.util.Arrays;
@ -20,7 +20,8 @@ import lombok.RequiredArgsConstructor;
import net.md_5.bungee.api.ChatColor; import net.md_5.bungee.api.ChatColor;
import net.md_5.bungee.api.CommandSender; import net.md_5.bungee.api.CommandSender;
import net.md_5.bungee.api.ProxyServer; import net.md_5.bungee.api.ProxyServer;
import net.md_5.bungee.api.event.LoginEvent; import net.md_5.bungee.event.EventBus;
import net.md_5.bungee.event.EventHandler;
import org.yaml.snakeyaml.Yaml; import org.yaml.snakeyaml.Yaml;
/** /**
@ -36,7 +37,8 @@ public class PluginManager
private final ProxyServer proxy; private final ProxyServer proxy;
/*========================================================================*/ /*========================================================================*/
private final Yaml yaml = new Yaml(); private final Yaml yaml = new Yaml();
private final EventBus eventBus = new EventBus(); @SuppressWarnings("unchecked")
private final EventBus eventBus = new EventBus( ProxyServer.getInstance().getLogger(), Subscribe.class, EventHandler.class );
private final Map<String, Plugin> plugins = new HashMap<>(); private final Map<String, Plugin> plugins = new HashMap<>();
private final Map<String, Command> commandMap = new HashMap<>(); private final Map<String, Command> commandMap = new HashMap<>();
@ -311,6 +313,14 @@ public class PluginManager
*/ */
public void registerListener(Plugin plugin, Listener listener) public void registerListener(Plugin plugin, Listener listener)
{ {
for ( Method method : listener.getClass().getDeclaredMethods() )
{
if ( method.isAnnotationPresent( Subscribe.class ) )
{
proxy.getLogger().log( Level.SEVERE, "Listener {0} has registered using depreceated subscribe annotation! Please advice author to update to @EventHadler", listener );
}
}
eventBus.register( listener ); eventBus.register( listener );
} }
} }

29
event/pom.xml Normal file
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@ -0,0 +1,29 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>net.md-5</groupId>
<artifactId>bungeecord-parent</artifactId>
<version>1.5-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<groupId>net.md-5</groupId>
<artifactId>bungeecord-event</artifactId>
<version>1.5-SNAPSHOT</version>
<packaging>jar</packaging>
<name>BungeeCord-Event</name>
<description>Generic java event dispatching API intended for use with BungeeCord</description>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

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@ -0,0 +1,163 @@
package net.md_5.bungee.event;
import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.MessageFormat;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.util.logging.Level;
import java.util.logging.Logger;
public class EventBus
{
private final Map<Class<?>, Map<Object, Method[]>> eventToHandler = new HashMap<>();
private final ReadWriteLock lock = new ReentrantReadWriteLock();
private final Logger logger;
private final Class<? extends Annotation>[] annotations;
public EventBus()
{
this( null, (Class<? extends Annotation>[]) null );
}
public EventBus(Logger logger)
{
this( logger, (Class<? extends Annotation>[]) null );
}
@SuppressWarnings("unchecked")
public EventBus(Class<? extends Annotation>... annotations)
{
this( null, annotations );
}
@SuppressWarnings("unchecked")
public EventBus(Logger logger, Class<? extends Annotation>... annotations)
{
this.logger = ( logger == null ) ? Logger.getGlobal() : logger;
this.annotations = ( annotations == null || annotations.length == 0 ) ? new Class[]
{
EventHandler.class
} : annotations;
}
public void post(Object event)
{
lock.readLock().lock();
try
{
Map<Object, Method[]> handlers = eventToHandler.get( event.getClass() );
if ( handlers != null )
{
for ( Map.Entry<Object, Method[]> handler : handlers.entrySet() )
{
for ( Method method : handler.getValue() )
{
try
{
method.invoke( handler.getKey(), event );
} catch ( IllegalAccessException ex )
{
throw new Error( "Method became inaccessible: " + event, ex );
} catch ( IllegalArgumentException ex )
{
throw new Error( "Method rejected target/argument: " + event, ex );
} catch ( InvocationTargetException ex )
{
logger.log( Level.WARNING, MessageFormat.format( "Error dispatching event {0} to listener {1}", event, handler.getKey() ), ex.getCause() );
}
}
}
}
} finally
{
lock.readLock().unlock();
}
}
private Map<Class<?>, Set<Method>> findHandlers(Object listener)
{
Map<Class<?>, Set<Method>> handler = new HashMap<>();
for ( Method m : listener.getClass().getDeclaredMethods() )
{
for ( Class<? extends Annotation> annotation : annotations )
{
if ( m.isAnnotationPresent( annotation ) )
{
Class<?>[] params = m.getParameterTypes();
if ( params.length != 1 )
{
logger.log( Level.INFO, "Method {0} in class {1} annotated with {2} does not have single argument", new Object[]
{
m, listener.getClass(), annotation
} );
continue;
}
Set<Method> existing = handler.get( params[0] );
if ( existing == null )
{
existing = new HashSet<>();
handler.put( params[0], existing );
}
existing.add( m );
break;
}
}
}
return handler;
}
public void register(Object listener)
{
Map<Class<?>, Set<Method>> handler = findHandlers( listener );
lock.writeLock().lock();
try
{
for ( Map.Entry<Class<?>, Set<Method>> e : handler.entrySet() )
{
Map<Object, Method[]> a = eventToHandler.get( e.getKey() );
if ( a == null )
{
a = new HashMap<>();
eventToHandler.put( e.getKey(), a );
}
Method[] baked = new Method[ e.getValue().size() ];
a.put( listener, e.getValue().toArray( baked ) );
}
} finally
{
lock.writeLock().unlock();
}
}
public void unregister(Object listener)
{
Map<Class<?>, Set<Method>> handler = findHandlers( listener );
lock.writeLock().lock();
try
{
for ( Map.Entry<Class<?>, Set<Method>> e : handler.entrySet() )
{
Map<Object, Method[]> a = eventToHandler.get( e.getKey() );
if ( a != null )
{
a.remove( listener );
if ( a.isEmpty() )
{
eventToHandler.remove( e.getKey() );
}
}
}
} finally
{
lock.writeLock().unlock();
}
}
}

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@ -0,0 +1,13 @@
package net.md_5.bungee.event;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface EventHandler
{
}

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@ -1,7 +1,5 @@
package net.md_5.bungee.api.plugin; package net.md_5.bungee.event;
import com.google.common.eventbus.EventBus;
import com.google.common.eventbus.Subscribe;
import java.util.concurrent.CountDownLatch; import java.util.concurrent.CountDownLatch;
import org.junit.Assert; import org.junit.Assert;
import org.junit.Test; import org.junit.Test;
@ -10,33 +8,35 @@ public class EventBusTest
{ {
private final EventBus bus = new EventBus(); private final EventBus bus = new EventBus();
private final CountDownLatch latch = new CountDownLatch( 1 ); private final CountDownLatch latch = new CountDownLatch( 2 );
@Test @Test
public void testNestedEvents() public void testNestedEvents()
{ {
bus.register( this ); bus.register( this );
bus.post( new FirstEvent() ); bus.post( new FirstEvent() );
}
@Subscribe
public void firstListener(FirstEvent event)
{
bus.post( new SecondEvent() );
Assert.assertEquals( latch.getCount(), 0 ); Assert.assertEquals( latch.getCount(), 0 );
} }
@Subscribe @EventHandler
public void firstListener(FirstEvent event)
{
bus.post( new SecondEvent() );
Assert.assertEquals( latch.getCount(), 1 );
latch.countDown();
}
@EventHandler
public void secondListener(SecondEvent event) public void secondListener(SecondEvent event)
{ {
latch.countDown(); latch.countDown();
} }
public static class FirstEvent extends Event public static class FirstEvent
{ {
} }
public static class SecondEvent extends Event public static class SecondEvent
{ {
} }
} }

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@ -38,6 +38,7 @@
<modules> <modules>
<module>api</module> <module>api</module>
<module>event</module>
<module>protocol</module> <module>protocol</module>
<module>proxy</module> <module>proxy</module>
</modules> </modules>