| /* |
| * 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.lang.reflect.InvocationHandler; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Proxy; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| |
| import org.apache.felix.dm.Component; |
| 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; |
| import org.junit.Assert; |
| |
| /** |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class ResourceDependencyTest extends TestBase { |
| public void testResourceDependency() throws MalformedURLException { |
| DependencyManager m = getDM(); |
| // helper class that ensures certain steps get executed in sequence |
| Ensure e = new Ensure(); |
| // create a service provider and consumer |
| ResourceConsumer c = new ResourceConsumer(e); |
| Component consumer = m.createComponent() |
| .setImplementation(c) |
| .add(m.createResourceDependency() |
| .setFilter("(&(path=/path/to/*.txt)(host=localhost))") |
| .setCallbacks("add", "change", "remove")); |
| Component dynamicProxyConsumer = m.createComponent() |
| .setFactory(new ResourceConsumerFactory(e), "create") |
| .add(m.createResourceDependency() |
| .setFilter("(path=*.doc)") |
| .setCallbacks("add", null)); |
| ResourceProvider provider = new ResourceProvider(context, |
| new URL("file://localhost/path/to/file1.txt"), |
| new URL("file://localhost/path/to/file2.txt"), |
| new URL("file://localhost/path/to/file3.doc")); |
| Component resourceProvider = m.createComponent() |
| .setImplementation(provider) |
| .add(m.createServiceDependency() |
| .setService(ResourceHandler.class) |
| .setCallbacks("add", "remove")); |
| |
| // first add the consumer |
| m.add(consumer); |
| // then the resource provider, which will provide 3 resources, |
| // 2 of which match the consumers filter conditions |
| m.add(resourceProvider); |
| // make sure our consumer invoked openStream() on both resources, |
| // increasing the step counter to 2 |
| e.step(3); |
| |
| // now add another consumer, that matches only one resource, and uses |
| // a dynamic proxy as its implementation |
| m.add(dynamicProxyConsumer); |
| // ensure the resource was injected properly |
| e.waitForStep(4, 5000); |
| |
| // now change a resource and see if it gets propagated to the consumer |
| provider.change(0); |
| |
| // wait for change callback |
| e.waitForStep(5, 5000); |
| e.step(6); |
| |
| // cleanup |
| m.remove(dynamicProxyConsumer); |
| m.remove(resourceProvider); |
| m.remove(consumer); |
| |
| // validate that all consumed resources are "unconsumed" again |
| c.ensure(); |
| m.clear(); |
| } |
| |
| class ResourceConsumer { |
| private volatile int m_counter; |
| private Ensure m_ensure; |
| |
| public ResourceConsumer(Ensure ensure) { |
| m_ensure = ensure; |
| } |
| |
| public void add(URL resource) { |
| debug("ResourceConsumer.add(%s)", resource); |
| m_counter++; |
| m_ensure.step(); |
| } |
| public void change(URL resource) { |
| m_ensure.step(); |
| } |
| public void remove(URL resource) { |
| debug("ResourceConsumer.remove(%s)", resource); |
| m_counter--; |
| } |
| public void ensure() { |
| Assert.assertTrue("all resources should have been added and removed at this point, but " + m_counter + " are remaining", m_counter == 0); |
| } |
| } |
| |
| |
| class ResourceConsumerFactory { |
| private final Ensure m_ensure; |
| public ResourceConsumerFactory(Ensure ensure) { |
| m_ensure = ensure; |
| } |
| public Object create() { |
| ResourceConsumer resourceConsumer = new ResourceConsumer(m_ensure); |
| // create a dynamic proxy for the ResourceProvider |
| return Proxy.newProxyInstance(resourceConsumer.getClass().getClassLoader(), resourceConsumer.getClass().getInterfaces(), new DynamicProxyHandler(resourceConsumer, m_ensure)); |
| } |
| } |
| |
| static class DynamicProxyHandler implements InvocationHandler { |
| Ensure m_ensure; |
| ResourceConsumer resourceConsumer = null; |
| |
| public DynamicProxyHandler(ResourceConsumer resourceConsumer, Ensure ensure) { |
| this.resourceConsumer = resourceConsumer; |
| m_ensure = ensure; |
| } |
| |
| public void add(URL resource) { |
| m_ensure.step(4); |
| } |
| |
| public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { |
| return method.invoke(resourceConsumer, args); |
| } |
| } |
| } |