package org.infinispan.notifications.cachemanagerlistener;
import org.infinispan.factories.annotations.Inject;
import org.infinispan.manager.EmbeddedCacheManager;
import org.infinispan.notifications.Listener;
import org.infinispan.notifications.impl.ListenerInvocation;
import org.infinispan.notifications.cachemanagerlistener.annotation.CacheStarted;
import org.infinispan.notifications.cachemanagerlistener.annotation.CacheStopped;
import org.infinispan.notifications.cachemanagerlistener.annotation.Merged;
import org.infinispan.notifications.cachemanagerlistener.annotation.ViewChanged;
import org.infinispan.notifications.cachemanagerlistener.event.CacheStartedEvent;
import org.infinispan.notifications.cachemanagerlistener.event.CacheStoppedEvent;
import org.infinispan.notifications.cachemanagerlistener.event.Event;
import org.infinispan.notifications.cachemanagerlistener.event.MergeEvent;
import org.infinispan.notifications.cachemanagerlistener.event.ViewChangedEvent;
import org.infinispan.notifications.cachemanagerlistener.event.impl.EventImpl;
import org.infinispan.notifications.impl.AbstractListenerImpl;
import org.infinispan.remoting.transport.Address;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
import javax.transaction.Transaction;
import java.lang.annotation.Annotation;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* Global, shared notifications on the cache manager.
*
* @author Manik Surtani
* @since 4.0
*/
public class CacheManagerNotifierImpl extends AbstractListenerImpl<Event, ListenerInvocation<Event>>
implements CacheManagerNotifier {
private static final Log log = LogFactory.getLog(CacheManagerNotifierImpl.class);
private static final Map<Class<? extends Annotation>, Class<?>> allowedListeners = new HashMap<Class<? extends Annotation>, Class<?>>(4);
static {
allowedListeners.put(CacheStarted.class, CacheStartedEvent.class);
allowedListeners.put(CacheStopped.class, CacheStoppedEvent.class);
allowedListeners.put(ViewChanged.class, ViewChangedEvent.class);
allowedListeners.put(Merged.class, MergeEvent.class);
}
final List<ListenerInvocation<Event>> cacheStartedListeners = new CopyOnWriteArrayList<ListenerInvocation<Event>>();
final List<ListenerInvocation<Event>> cacheStoppedListeners = new CopyOnWriteArrayList<ListenerInvocation<Event>>();
final List<ListenerInvocation<Event>> viewChangedListeners = new CopyOnWriteArrayList<ListenerInvocation<Event>>();
final List<ListenerInvocation<Event>> mergeListeners = new CopyOnWriteArrayList<ListenerInvocation<Event>>();
private EmbeddedCacheManager cacheManager;
public CacheManagerNotifierImpl() {
listenersMap.put(CacheStarted.class, cacheStartedListeners);
listenersMap.put(CacheStopped.class, cacheStoppedListeners);
listenersMap.put(ViewChanged.class, viewChangedListeners);
listenersMap.put(Merged.class, mergeListeners);
}
protected class DefaultBuilder extends AbstractInvocationBuilder {
@Override
public ListenerInvocation<Event> build() {
return new ListenerInvocationImpl(target, method, sync, classLoader, subject);
}
}
@Inject
public void injectCacheManager(EmbeddedCacheManager cacheManager) {
this.cacheManager = cacheManager;
}
@Override
public void notifyViewChange(List<Address> members, List<Address> oldMembers, Address myAddress, int viewId) {
if (!viewChangedListeners.isEmpty()) {
EventImpl e = new EventImpl();
e.setLocalAddress(myAddress);
e.setMergeView(false);
e.setViewId(viewId);
e.setNewMembers(members);
e.setOldMembers(oldMembers);
e.setCacheManager(cacheManager);
e.setType(Event.Type.VIEW_CHANGED);
for (ListenerInvocation listener : viewChangedListeners) listener.invoke(e);
}
}
@Override
public void notifyMerge(List<Address> members, List<Address> oldMembers, Address myAddress, int viewId, List<List<Address>> subgroupsMerged) {
if (!mergeListeners.isEmpty()) {
EventImpl e = new EventImpl();
e.setLocalAddress(myAddress);
e.setViewId(viewId);
e.setMergeView(true);
e.setNewMembers(members);
e.setOldMembers(oldMembers);
e.setCacheManager(cacheManager);
e.setSubgroupsMerged(subgroupsMerged);
e.setType(Event.Type.MERGED);
for (ListenerInvocation listener : mergeListeners) listener.invoke(e);
}
}
@Override
public void notifyCacheStarted(String cacheName) {
if (!cacheStartedListeners.isEmpty()) {
EventImpl e = new EventImpl();
e.setCacheName(cacheName);
e.setCacheManager(cacheManager);
e.setType(Event.Type.CACHE_STARTED);
for (ListenerInvocation listener : cacheStartedListeners) listener.invoke(e);
}
}
@Override
public void notifyCacheStopped(String cacheName) {
if (!cacheStoppedListeners.isEmpty()) {
EventImpl e = new EventImpl();
e.setCacheName(cacheName);
e.setCacheManager(cacheManager);
e.setType(Event.Type.CACHE_STOPPED);
for (ListenerInvocation listener : cacheStoppedListeners) listener.invoke(e);
}
}
@Override
public void addListener(Object listener) {
validateAndAddListenerInvocation(listener, new DefaultBuilder());
}
@Override
protected Log getLog() {
return log;
}
@Override
protected Map<Class<? extends Annotation>, Class<?>> getAllowedMethodAnnotations(Listener l) {
return allowedListeners;
}
@Override
protected final Transaction suspendIfNeeded() {
return null; //no-op
}
@Override
protected final void resumeIfNeeded(Transaction transaction) {
//no-op
}
}