[FELIX-3910] added testcase which tries to reproduce the problem described in the FELIX-3910 jira issue.
For now, this test is incomplete because the paxexam version we are using is an old one and is using an old
felix framework, which does not fire a FrameworkEvent when it catches some exceptions fired by "service changed" listeners.
git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1448165 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/dependencymanager/test/src/test/java/org/apache/felix/dm/test/RaceTest.java b/dependencymanager/test/src/test/java/org/apache/felix/dm/test/RaceTest.java
new file mode 100644
index 0000000..5ae7636
--- /dev/null
+++ b/dependencymanager/test/src/test/java/org/apache/felix/dm/test/RaceTest.java
@@ -0,0 +1,185 @@
+/*
+ * 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.test;
+
+import static org.ops4j.pax.exam.CoreOptions.mavenBundle;
+import static org.ops4j.pax.exam.CoreOptions.options;
+import static org.ops4j.pax.exam.CoreOptions.provision;
+
+import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+import junit.framework.Assert;
+
+import org.apache.felix.dm.Component;
+import org.apache.felix.dm.DependencyManager;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.ops4j.pax.exam.Option;
+import org.ops4j.pax.exam.junit.Configuration;
+import org.ops4j.pax.exam.junit.JUnit4TestRunner;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.FrameworkEvent;
+import org.osgi.framework.FrameworkListener;
+import org.osgi.framework.ServiceReference;
+import org.osgi.framework.ServiceRegistration;
+
+@RunWith(JUnit4TestRunner.class)
+public class RaceTest extends Base implements Runnable {
+ @Configuration
+ public static Option[] configuration() {
+ return options(provision(
+ mavenBundle().groupId("org.osgi").artifactId("org.osgi.compendium")
+ .version(Base.OSGI_SPEC_VERSION), mavenBundle().groupId("org.apache.felix")
+ .artifactId("org.apache.felix.dependencymanager").versionAsInProject()));
+ }
+
+ static volatile CountDownLatch m_bindALatch;
+ static volatile CountDownLatch m_unbindALatch;
+ static final Executor m_exec = Executors.newFixedThreadPool(10);
+ static volatile BundleContext m_bctx;
+ volatile boolean m_running = true;
+
+ @Test
+ public void testConcurrentInjections(BundleContext ctx) {
+ m_bctx = ctx;
+ DependencyManager m = new DependencyManager(ctx);
+ Component controller = m
+ .createComponent()
+ .setImplementation(Controller.class)
+ .setComposition("getComposition")
+ .add(m.createServiceDependency().setService(A.class).setCallbacks("bindA", "unbindA")
+ .setRequired(true));
+
+ m.add(controller);
+ Thread t = new Thread(this);
+ t.start();
+ super.sleep(10000);
+
+ m_running = false;
+ t.interrupt();
+ Assert.assertFalse("Test failed.", super.errorsLogged());
+ }
+
+ public void run() {
+ try {
+ int loop = 0;
+ while (m_running) {
+ int N = 10;
+ m_bindALatch = new CountDownLatch(N * 2);
+ m_unbindALatch = new CountDownLatch(N * 2);
+
+ AFactory aFactory = new AFactory();
+ aFactory.register(N, m_exec);
+
+ try {
+ if (!m_bindALatch.await(5000, TimeUnit.MILLISECONDS)) {
+ super.log(LOG_ERROR, "bind problem.");
+ return;
+ }
+ } catch (InterruptedException e) {
+ }
+
+ aFactory.unregister(N, m_exec);
+
+ if (!m_unbindALatch.await(5000, TimeUnit.MILLISECONDS)) {
+ super.log(LOG_ERROR, "unbind problem.");
+ return;
+ }
+
+ if ((++loop) % 1000 == 0) {
+ System.out.println("Performed " + loop + " tests.");
+ }
+ }
+ } catch (InterruptedException e) {
+ return;
+ } catch (Throwable t) {
+ super.log(LOG_ERROR, "error", t);
+ return;
+ }
+ }
+
+ public static class A {
+ void foo() {
+ }
+ }
+
+ class AFactory {
+ ConcurrentLinkedQueue<ServiceRegistration> m_regs = new ConcurrentLinkedQueue<ServiceRegistration>();
+
+ public void register(int n, Executor exec) {
+ for (int i = 0; i < n; i++) {
+ m_exec.execute(new Runnable() {
+ public void run() {
+ try {
+ A instance = new A();
+ m_regs.add(m_bctx.registerService(instance.getClass().getName(), instance, null));
+ m_bindALatch.countDown();
+ } catch (Throwable e) {
+ e.printStackTrace();
+ }
+ }
+ });
+ }
+ }
+
+ public void unregister(int n, Executor exec) {
+ for (int i = 0; i < n; i++) {
+ m_exec.execute(new Runnable() {
+ public void run() {
+ try {
+ ServiceRegistration sr = m_regs.poll();
+ sr.unregister();
+ m_unbindALatch.countDown();
+ } catch (Throwable e) {
+ log(LOG_ERROR, "error", e);
+ }
+ }
+ });
+ }
+ }
+ }
+
+ public static class Controller {
+ final Composition m_compo = new Composition();
+
+ Object[] getComposition() {
+ return new Object[] { this, m_compo };
+ }
+
+ void bindA(ServiceReference sr) {
+ A a = (A) sr.getBundle().getBundleContext().getService(sr);
+ if (a == null) {
+ throw new IllegalStateException("bindA: bundleContext.getService returned null");
+ }
+ a.foo();
+ m_bindALatch.countDown();
+ }
+
+ void unbindA(A a) {
+ m_unbindALatch.countDown();
+ }
+ }
+
+ public static class Composition {
+ }
+}