| /* |
| * 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.net.URL; |
| |
| import org.apache.felix.dm.Component; |
| import org.apache.felix.dm.ComponentState; |
| import org.apache.felix.dm.ComponentStateListener; |
| import org.apache.felix.dm.Dependency; |
| import org.apache.felix.dm.DependencyManager; |
| import org.apache.felix.dm.ResourceHandler; |
| import org.apache.felix.dm.itest.util.Ensure; |
| import org.apache.felix.dm.itest.util.TestBase; |
| |
| /** |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class ResourceAdapterDependencyAddAndRemoveTest extends TestBase { |
| public void testBasicResourceAdapter() throws Exception { |
| DependencyManager m = getDM(); |
| // helper class that ensures certain steps get executed in sequence |
| Ensure e = new Ensure(); |
| |
| // create and add a service provider |
| m.add(m.createComponent() |
| .setInterface(ServiceInterface.class.getName(), null) |
| .setImplementation(new ServiceProvider(e))); |
| |
| // create and add a resource provider |
| ResourceProvider provider = new ResourceProvider(context, new URL("file://localhost/path/to/file1.txt")); |
| m.add(m.createComponent() |
| .setImplementation(provider) |
| .add(m.createServiceDependency() |
| .setService(ResourceHandler.class) |
| .setCallbacks("add", "remove")) |
| ); |
| |
| // create a resource adapter for our single resource |
| // note that we can provide an actual implementation instance here because there will be only one |
| // adapter, normally you'd want to specify a Class here |
| // also, create a callback instance which will be used for both callbacks on resource changes and |
| // life cycle callbacks on the adapters themselves |
| |
| Dependency d = m.createServiceDependency() |
| .setService(ServiceInterface.class) |
| .setRequired(true); |
| CallbackInstance callbackInstance = new CallbackInstance(e, d); |
| Component component = m.createResourceAdapterService("(&(path=/path/to/*.txt)(host=localhost))", false, callbackInstance, "changed") |
| .setImplementation(new ResourceAdapter(e)) |
| .setCallbacks(callbackInstance, "init", "start", "stop", "destroy"); |
| |
| // add the resource adapter |
| m.add(component); |
| |
| // wait until the single resource is available (the adapter has been started) |
| e.waitForStep(1, 5000); |
| // trigger a 'change' in our resource |
| provider.change(); |
| // wait until the changed callback is invoked |
| e.waitForStep(2, 5000); |
| // and has completed (ensuring no "extra" steps are invoked in the mean time) |
| e.waitForStep(3, 5000); |
| |
| // remove the resource adapter again |
| // add a component state listener, in order to track resource adapter destruction |
| component.add(new ComponentStateListenerImpl(e)); |
| m.remove(component); |
| |
| // wait for the stopped callback in the state listener |
| e.waitForStep(4, 5000); |
| m.clear(); |
| } |
| |
| static class ResourceAdapter { |
| protected URL m_resource; // injected by reflection. |
| |
| ResourceAdapter(Ensure e) { |
| } |
| } |
| |
| static interface ServiceInterface { |
| public void invoke(); |
| } |
| |
| static class ServiceProvider implements ServiceInterface { |
| public ServiceProvider(Ensure e) { |
| } |
| public void invoke() { |
| } |
| } |
| |
| class CallbackInstance { |
| private final Dependency m_dependency; |
| private final Ensure m_ensure; |
| |
| |
| public CallbackInstance(Ensure e, Dependency d) { |
| m_ensure = e; |
| m_dependency = d; |
| } |
| |
| void init(Component c) { |
| debug("CallbackInstance.init"); |
| c.add(m_dependency); |
| } |
| |
| void start() { |
| debug("CallbackInstance.start"); |
| m_ensure.step(1); |
| } |
| |
| void stop() { |
| debug("CallbackInstance.stop"); |
| } |
| |
| void destroy() { |
| debug("CallbackInstance.destroy"); |
| } |
| |
| void changed(Component component) { |
| m_ensure.step(2); |
| Dependency oldDependency = m_dependency; |
| // and add a new dependency |
| component.add(component.getDependencyManager().createServiceDependency().setService(ServiceInterface.class).setRequired(true)); |
| // remove the old dependency |
| component.remove(oldDependency); |
| debug("CallbackInstance.changed the dependencies"); |
| m_ensure.step(3); |
| } |
| } |
| |
| class ComponentStateListenerImpl implements ComponentStateListener { |
| |
| private final Ensure m_ensure; |
| |
| public ComponentStateListenerImpl(Ensure e) { |
| this.m_ensure = e; |
| } |
| |
| public void changed(Component c, ComponentState state) { |
| debug("ComponentStateListenerImpl.changed: state=%s", state); |
| switch (state) { |
| case INACTIVE: |
| System.out.println("stopped"); |
| m_ensure.step(4); |
| default: |
| } |
| } |
| } |
| } |