| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF 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.apache.geode.test.dunit.internal; |
| |
| import java.util.List; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| |
| import org.apache.geode.test.dunit.VM; |
| import org.apache.geode.test.dunit.VMEventListener; |
| import org.apache.geode.test.dunit.VMEventListenerRegistry; |
| |
| /** |
| * Implements {@code VMEventListenerRegistry} and provides thread-safe notifications to registered |
| * listeners. |
| */ |
| public class VMEventNotifier implements VMEventListenerRegistry { |
| |
| private final List<VMEventListener> listeners; |
| |
| VMEventNotifier() { |
| listeners = new CopyOnWriteArrayList<>(); |
| } |
| |
| @Override |
| public void addVMEventListener(VMEventListener listener) { |
| listeners.add(listener); |
| } |
| |
| @Override |
| public void removeVMEventListener(VMEventListener listener) { |
| listeners.remove(listener); |
| } |
| |
| /** |
| * Notifies currently registered listeners of {@link VMEventListener#afterCreateVM(VM)}. |
| * Concurrent changes to listener registration are ignored while notifying. |
| */ |
| public void notifyAfterCreateVM(VM vm) { |
| for (VMEventListener listener : listeners) { |
| listener.afterCreateVM(vm); |
| } |
| } |
| |
| /** |
| * Notifies currently registered listeners of {@link VMEventListener#beforeBounceVM(VM)}. |
| * Concurrent changes to listener registration are ignored while notifying. |
| */ |
| public void notifyBeforeBounceVM(VM vm) { |
| for (VMEventListener listener : listeners) { |
| listener.beforeBounceVM(vm); |
| } |
| } |
| |
| /** |
| * Notifies currently registered listeners of {@link VMEventListener#afterBounceVM(VM)}. |
| * Concurrent changes to listener registration are ignored while notifying. |
| */ |
| public void notifyAfterBounceVM(VM vm) { |
| for (VMEventListener listener : listeners) { |
| listener.afterBounceVM(vm); |
| } |
| } |
| } |