| /* |
| * |
| * 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.qpid.server.configuration.updater; |
| |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.CancellationException; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import javax.security.auth.Subject; |
| |
| import org.apache.qpid.server.util.ServerScopedRuntimeException; |
| import org.apache.qpid.test.utils.QpidTestCase; |
| |
| public class TaskExecutorTest extends QpidTestCase |
| { |
| private TaskExecutorImpl _executor; |
| |
| protected void setUp() throws Exception |
| { |
| super.setUp(); |
| _executor = new TaskExecutorImpl(); |
| } |
| |
| protected void tearDown() throws Exception |
| { |
| try |
| { |
| _executor.stopImmediately(); |
| } |
| finally |
| { |
| super.tearDown(); |
| } |
| } |
| |
| public void testGetState() |
| { |
| assertFalse("Unexpected initial state", _executor.isRunning()); |
| } |
| |
| public void testStart() |
| { |
| _executor.start(); |
| assertTrue("Unexpected started state", _executor.isRunning()); |
| } |
| |
| public void testStopImmediately() throws Exception |
| { |
| _executor.start(); |
| final CountDownLatch submitLatch = new CountDownLatch(2); |
| final CountDownLatch waitForCallLatch = new CountDownLatch(1); |
| final BlockingQueue<Exception> submitExceptions = new LinkedBlockingQueue<Exception>(); |
| |
| Runnable runnable = new Runnable() |
| { |
| @Override |
| public void run() |
| { |
| try |
| { |
| Future<Void> f = _executor.submit(new NeverEndingCallable(waitForCallLatch)); |
| submitLatch.countDown(); |
| f.get(); |
| } |
| catch (Exception e) |
| { |
| if (e instanceof ExecutionException) |
| { |
| e = (Exception) e.getCause(); |
| } |
| if(e instanceof RuntimeException && e.getCause() instanceof Exception) |
| { |
| submitExceptions.add((Exception)e.getCause()); |
| } |
| else |
| { |
| submitExceptions.add(e); |
| } |
| } |
| } |
| }; |
| Thread t1 = new Thread(runnable); |
| t1.start(); |
| Thread t2 = new Thread(runnable); |
| t2.start(); |
| |
| final long timeout = 2000l; |
| boolean awaitSubmissions = submitLatch.await(timeout, TimeUnit.MILLISECONDS); |
| assertTrue(submitLatch.getCount() + " task(s) have not been submitted within expected time", awaitSubmissions); |
| assertTrue("The first task has not been triggered", waitForCallLatch.await(timeout, TimeUnit.MILLISECONDS)); |
| |
| _executor.stopImmediately(); |
| assertFalse("Unexpected stopped state", _executor.isRunning()); |
| |
| Exception e = submitExceptions.poll(timeout, TimeUnit.MILLISECONDS); |
| assertNotNull("The task execution was not interrupted or cancelled", e); |
| Exception e2 = submitExceptions.poll(timeout, TimeUnit.MILLISECONDS); |
| assertNotNull("The task execution was not interrupted or cancelled", e2); |
| |
| assertTrue("One of the exceptions should be CancellationException:", e2 instanceof CancellationException |
| || e instanceof CancellationException); |
| assertTrue("One of the exceptions should be InterruptedException:", e2 instanceof InterruptedException |
| || e instanceof InterruptedException); |
| |
| t1.join(timeout); |
| t2.join(timeout); |
| } |
| |
| public void testStop() |
| { |
| _executor.start(); |
| _executor.stop(); |
| assertFalse("Unexpected stopped state", _executor.isRunning()); |
| } |
| |
| public void testSubmitAndWait() throws Exception |
| { |
| _executor.start(); |
| Object result = _executor.run(new Task<String, RuntimeException>() |
| { |
| @Override |
| public String execute() |
| { |
| return "DONE"; |
| } |
| |
| @Override |
| public String getObject() |
| { |
| return getTestName(); |
| } |
| |
| @Override |
| public String getAction() |
| { |
| return "test"; |
| } |
| |
| @Override |
| public String getArguments() |
| { |
| return null; |
| } |
| }); |
| assertEquals("Unexpected task execution result", "DONE", result); |
| } |
| |
| public void testSubmitAndWaitInNotAuthorizedContext() |
| { |
| _executor.start(); |
| Object subject = _executor.run(new SubjectRetriever()); |
| assertNull("Subject must be null", subject); |
| } |
| |
| public void testSubmitAndWaitInAuthorizedContext() |
| { |
| _executor.start(); |
| Subject subject = new Subject(); |
| Object result = Subject.doAs(subject, new PrivilegedAction<Object>() |
| { |
| @Override |
| public Object run() |
| { |
| return _executor.run(new SubjectRetriever()); |
| } |
| }); |
| assertEquals("Unexpected subject", subject, result); |
| } |
| |
| public void testSubmitAndWaitInAuthorizedContextWithNullSubject() |
| { |
| _executor.start(); |
| Object result = Subject.doAs(null, new PrivilegedAction<Object>() |
| { |
| @Override |
| public Object run() |
| { |
| return _executor.run(new SubjectRetriever()); |
| } |
| }); |
| assertEquals("Unexpected subject", null, result); |
| } |
| |
| public void testSubmitAndWaitReThrowsOriginalRuntimeException() |
| { |
| final RuntimeException exception = new RuntimeException(); |
| _executor.start(); |
| try |
| { |
| _executor.run(new Task<Void, RuntimeException>() |
| { |
| |
| @Override |
| public Void execute() |
| { |
| throw exception; |
| } |
| |
| @Override |
| public String getObject() |
| { |
| return getTestName(); |
| } |
| |
| @Override |
| public String getAction() |
| { |
| return "test"; |
| } |
| |
| @Override |
| public String getArguments() |
| { |
| return null; |
| } |
| }); |
| fail("Exception is expected"); |
| } |
| catch (Exception e) |
| { |
| assertEquals("Unexpected exception", exception, e); |
| } |
| } |
| |
| public void testSubmitAndWaitCurrentActorAndSecurityManagerSubjectAreRespected() throws Exception |
| { |
| _executor.start(); |
| Subject subject = new Subject(); |
| final AtomicReference<Subject> taskSubject = new AtomicReference<Subject>(); |
| Subject.doAs(subject, new PrivilegedAction<Object>() |
| { |
| @Override |
| public Object run() |
| { |
| _executor.run(new Task<Void, RuntimeException>() |
| { |
| @Override |
| public Void execute() |
| { |
| taskSubject.set(Subject.getSubject(AccessController.getContext())); |
| return null; |
| } |
| |
| @Override |
| public String getObject() |
| { |
| return getTestName(); |
| } |
| |
| @Override |
| public String getAction() |
| { |
| return "test"; |
| } |
| |
| @Override |
| public String getArguments() |
| { |
| return null; |
| } |
| }); |
| return null; |
| } |
| }); |
| |
| assertEquals("Unexpected security manager subject", subject, taskSubject.get()); |
| } |
| |
| private class SubjectRetriever implements Task<Subject, RuntimeException> |
| { |
| @Override |
| public Subject execute() |
| { |
| return Subject.getSubject(AccessController.getContext()); |
| } |
| |
| @Override |
| public String getObject() |
| { |
| return getTestName(); |
| } |
| |
| @Override |
| public String getAction() |
| { |
| return "test"; |
| } |
| |
| @Override |
| public String getArguments() |
| { |
| return null; |
| } |
| } |
| |
| private class NeverEndingCallable implements Task<Void, RuntimeException> |
| { |
| private CountDownLatch _waitLatch; |
| |
| public NeverEndingCallable(CountDownLatch waitLatch) |
| { |
| _waitLatch = waitLatch; |
| } |
| |
| @Override |
| public Void execute() |
| { |
| if (_waitLatch != null) |
| { |
| _waitLatch.countDown(); |
| } |
| |
| // wait forever |
| synchronized (this) |
| { |
| try |
| { |
| this.wait(); |
| } |
| catch (InterruptedException e) |
| { |
| throw new ServerScopedRuntimeException(e); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public String getObject() |
| { |
| return getTestName(); |
| } |
| |
| @Override |
| public String getAction() |
| { |
| return "test"; |
| } |
| |
| @Override |
| public String getArguments() |
| { |
| return null; |
| } |
| } |
| } |