| /* |
| * 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.lambda.itest; |
| |
| import static org.apache.felix.dm.lambda.DependencyManagerActivator.component; |
| |
| import org.apache.felix.dm.Component; |
| import org.apache.felix.dm.DependencyManager; |
| |
| /** |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class ServiceDependencyTest extends TestBase { |
| public void testServiceRegistrationAndConsumption() { |
| DependencyManager m = getDM(); |
| // helper class that ensures certain steps get executed in sequence |
| Ensure e = new Ensure(); |
| // create a service provider and consumer |
| Component sp = component(m).impl(new ServiceProvider(e)).provides(ServiceInterface.class).build(); |
| Component sc = component(m).impl(new ServiceConsumer(e)).withSrv(ServiceInterface.class).build(); |
| |
| Component sc2 = component(m).impl(new ServiceConsumerCallbacks(e)) |
| .withSrv(ServiceInterface.class, srv -> srv.required(false).cb(ServiceConsumerCallbacks::add, ServiceConsumerCallbacks::remove)) |
| .build(); |
| |
| m.add(sp); |
| m.add(sc); |
| m.remove(sc); |
| m.add(sc2); |
| m.remove(sp); |
| m.remove(sc2); |
| // ensure we executed all steps inside the component instance |
| e.step(6); |
| } |
| |
| static interface ServiceInterface { |
| public void invoke(); |
| } |
| |
| static class ServiceProvider implements ServiceInterface { |
| private final Ensure m_ensure; |
| public ServiceProvider(Ensure e) { |
| m_ensure = e; |
| } |
| public void invoke() { |
| m_ensure.step(2); |
| } |
| } |
| |
| static class ServiceConsumer { |
| private volatile ServiceInterface m_service; |
| private final Ensure m_ensure; |
| |
| public ServiceConsumer(Ensure e) { |
| m_ensure = e; |
| } |
| |
| public void init() { |
| m_ensure.step(1); |
| m_service.invoke(); |
| } |
| |
| public void destroy() { |
| m_ensure.step(3); |
| } |
| } |
| |
| static class ServiceConsumerCallbacks { |
| private final Ensure m_ensure; |
| |
| public ServiceConsumerCallbacks(Ensure e) { |
| m_ensure = e; |
| } |
| |
| public void add(ServiceInterface service) { |
| m_ensure.step(4); |
| } |
| public void remove(ServiceInterface service) { |
| m_ensure.step(5); |
| } |
| } |
| } |