org.killbill.billing.jaxrs.util.KillbillEventHandler Maven / Gradle / Ivy
/*
* Copyright 2010-2013 Ning, Inc.
*
* Ning licenses this file to you 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 org.killbill.billing.jaxrs.util;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import org.killbill.billing.events.BusInternalEvent;
import org.killbill.billing.util.userrequest.CompletionUserRequest;
import org.killbill.billing.util.userrequest.CompletionUserRequestNotifier;
import com.google.common.eventbus.AllowConcurrentEvents;
import com.google.common.eventbus.Subscribe;
public class KillbillEventHandler {
private final List activeWaiters;
public KillbillEventHandler() {
activeWaiters = new LinkedList();
}
public void registerCompletionUserRequestWaiter(final CompletionUserRequest waiter) {
if (waiter == null) {
return;
}
synchronized (activeWaiters) {
activeWaiters.add(waiter);
}
}
public void unregisterCompletionUserRequestWaiter(final CompletionUserRequest waiter) {
if (waiter == null) {
return;
}
synchronized (activeWaiters) {
activeWaiters.remove(waiter);
}
}
/*
* Killbill server event handler
*/
@AllowConcurrentEvents
@Subscribe
public void handleSubscriptionEvents(final BusInternalEvent event) {
final List runningWaiters = new ArrayList();
synchronized (activeWaiters) {
runningWaiters.addAll(activeWaiters);
}
if (runningWaiters.size() == 0) {
return;
}
for (final CompletionUserRequestNotifier cur : runningWaiters) {
cur.onBusEvent(event);
}
}
}