| /* |
| * 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 org.apache.felix.dm.Component; |
| import org.apache.felix.dm.Dependency; |
| import org.apache.felix.dm.DependencyManager; |
| import org.apache.felix.dm.itest.util.Ensure; |
| import org.apache.felix.dm.itest.util.TestBase; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.ServiceRegistration; |
| |
| /** |
| * This test validates a corner case: |
| * |
| * We have the following component players: A, BFactory, B. |
| * |
| * component A optionally depends on BFactory. |
| * component A optionally depends on B |
| * |
| * when A.bind(BFactory factory) is called, the factory.create() method is then invoked, which triggers a registration of the B Service. |
| * At this point A.bind(B) should be called back. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class FELIX4913_OptionalCallbackInvokedTwiceTest extends TestBase { |
| |
| public void test_A_Defines_BDependency_FromInitMethod() throws Throwable { |
| final DependencyManager m = getDM(); |
| Ensure e = new Ensure(); |
| |
| Component bFactory = m.createComponent().setImplementation(new BFactory()).setInterface(BFactory.class.getName(), null); |
| Dependency dep = m.createServiceDependency().setService(B.class).setRequired(false).setCallbacks("bind", "unbind"); |
| Component a = m.createComponent() |
| .setImplementation(new A(e, dep)) |
| .add(m.createServiceDependency().setService(BFactory.class).setRequired(false).setCallbacks("bind", "unbind")); |
| |
| // Enable first bFactory. |
| m.add(bFactory); |
| |
| // Then Enable A. |
| m.add(a); |
| |
| // A should get BFactory, then it should instantiate B, and B should then be bound to A. |
| e.waitForStep(4, 5000); |
| |
| // Now, remove BFactory. The AComponent should then call bFactory.removeB(), abd A.unbind(B) should be called. |
| m.remove(bFactory); |
| e.waitForStep(6, 5000); |
| e.ensure(); |
| clearComponents(); |
| } |
| |
| public void test_A_Defines_BDependency_BeforeActivation() throws Throwable { |
| final DependencyManager m = getDM(); |
| Ensure e = new Ensure(); |
| |
| Component bFactory = m.createComponent() |
| .setImplementation(new BFactory()).setInterface(BFactory.class.getName(), null); |
| Component a = m.createComponent() |
| .setImplementation(new A(e, null)) |
| .add(m.createServiceDependency().setService(B.class).setRequired(false).setCallbacks("bind", "unbind")) |
| .add(m.createServiceDependency().setService(BFactory.class).setRequired(false).setCallbacks("bind", "unbind")); |
| |
| // Enable first bFactory. |
| m.add(bFactory); |
| |
| // Then Enable A. |
| m.add(a); |
| |
| // A should get BFactory, then it should instantiate B, and B should then be bound to A. |
| e.waitForStep(4, 5000); |
| |
| // Now, remove BFactory. The AComponent should then call bFactory.removeB(), abd A.unbind(B) should be called. |
| m.remove(bFactory); |
| e.waitForStep(6, 5000); |
| e.ensure(); |
| clearComponents(); |
| } |
| |
| public static class A { |
| final Ensure m_e; |
| final Dependency m_BDependency; |
| |
| public A(Ensure e, Dependency bfactoryDependency) { |
| m_e = e; |
| m_BDependency = bfactoryDependency; |
| } |
| |
| void init(Component component) { |
| m_e.step(1); |
| if (m_BDependency != null) { |
| component.add(m_BDependency); |
| } |
| } |
| |
| void start() { |
| m_e.step(2); |
| } |
| |
| void bind(BFactory bFactory) { |
| m_e.step(3); |
| bFactory.createB(); |
| } |
| |
| void unbind(BFactory bFactory) { |
| m_e.step(5); |
| bFactory.deleteB(); |
| } |
| |
| void bind(B b) { |
| m_e.step(4); |
| } |
| |
| void unbind(B b) { |
| m_e.step(6); |
| } |
| } |
| |
| public static class BFactory { |
| volatile BundleContext m_bctx; |
| ServiceRegistration m_registraiton; |
| |
| void createB() { |
| m_registraiton = m_bctx.registerService(B.class.getName(), new B(), null); |
| } |
| |
| void deleteB() { |
| m_registraiton.unregister(); |
| } |
| } |
| |
| public static class B { |
| } |
| |
| } |