| /* |
| * 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.felix.dm.itest.api; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.felix.dm.Component; |
| import org.apache.felix.dm.ComponentState; |
| import org.apache.felix.dm.ComponentStateListener; |
| |
| /** |
| * Helper class used to wait for a group of components to be started and stopped. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class ComponentTracker implements ComponentStateListener { |
| |
| private final CountDownLatch m_startLatch; |
| private final CountDownLatch m_stopLatch; |
| |
| public ComponentTracker(int startCount, int stopCount) { |
| m_startLatch = new CountDownLatch(startCount); |
| m_stopLatch = new CountDownLatch(stopCount); |
| } |
| |
| @Override |
| public void changed(Component c, ComponentState state) { |
| switch (state) { |
| case TRACKING_OPTIONAL: |
| m_startLatch.countDown(); |
| break; |
| |
| case INACTIVE: |
| m_stopLatch.countDown(); |
| break; |
| |
| default: |
| } |
| } |
| |
| public boolean awaitStarted(long millis) throws InterruptedException { |
| return m_startLatch.await(millis, TimeUnit.MILLISECONDS); |
| } |
| |
| public boolean awaitStopped(long millis) throws InterruptedException { |
| return m_stopLatch.await(millis, TimeUnit.MILLISECONDS); |
| } |
| |
| } |