| /** |
| * 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.rya.streams.querymanager; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.mockito.Mockito.mock; |
| |
| import java.util.concurrent.ArrayBlockingQueue; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.apache.rya.streams.api.queries.QueryChangeLog; |
| import org.apache.rya.streams.querymanager.QueryManager.LogEvent; |
| import org.apache.rya.streams.querymanager.QueryManager.LogEvent.LogEventType; |
| import org.apache.rya.streams.querymanager.QueryManager.LogEventWorkGenerator; |
| import org.junit.Test; |
| |
| /** |
| * Unit tests the methods of {@link LogEventWorkGenerator}. |
| */ |
| public class LogEventWorkGeneratorTest { |
| |
| @Test |
| public void shutdownSignalKillsThread() { |
| // The signal that will kill the notifying thread. |
| final AtomicBoolean shutdownSignal = new AtomicBoolean(false); |
| |
| // The queue generated work is offered to. |
| final BlockingQueue<LogEvent> queue = new ArrayBlockingQueue<>(1); |
| |
| // The listener that will perform the LogEventWorkGenerator work. |
| final LogEventWorkGenerator generator = new LogEventWorkGenerator(queue, 50, TimeUnit.MILLISECONDS, shutdownSignal); |
| |
| // A thread that will attempt to notify the generator with a created change log. |
| final Thread notifyThread = new Thread(() -> { |
| generator.notifyCreate("rya", mock(QueryChangeLog.class)); |
| }); |
| |
| // Fill the queue so that nothing may be offered to it. |
| queue.offer(LogEvent.delete("rya")); |
| |
| // Start the thread and show that it is still alive after the offer period. |
| notifyThread.start(); |
| assertTrue( ThreadUtil.stillAlive(notifyThread, 200) ); |
| |
| // Set the shutdown signal to true and join the thread. If we were able to join, then it shut down. |
| shutdownSignal.set(true); |
| assertFalse( ThreadUtil.stillAlive(notifyThread, 1000) ); |
| } |
| |
| @Test |
| public void notifyCreate() throws Exception { |
| // The signal that will kill the notifying thread. |
| final AtomicBoolean shutdownSignal = new AtomicBoolean(false); |
| |
| // The queue generated work is offered to. |
| final BlockingQueue<LogEvent> queue = new ArrayBlockingQueue<>(1); |
| |
| // The listener that will perform the LogEventWorkGenerator work. |
| final LogEventWorkGenerator generator = new LogEventWorkGenerator(queue, 50, TimeUnit.MILLISECONDS, shutdownSignal); |
| |
| // A thread that will attempt to notify the generator with a created change log. |
| final CountDownLatch notified = new CountDownLatch(1); |
| final Thread notifyThread = new Thread(() -> { |
| generator.notifyCreate("rya", mock(QueryChangeLog.class)); |
| notified.countDown(); |
| }); |
| |
| try { |
| // Start the thread that performs the notification. |
| notifyThread.start(); |
| |
| // Wait for the thread to indicate it has notified and check the queue for the value. |
| notified.await(200, TimeUnit.MILLISECONDS); |
| final LogEvent event = queue.poll(200, TimeUnit.MILLISECONDS); |
| assertEquals(LogEventType.CREATE, event.getEventType()); |
| assertEquals("rya", event.getRyaInstanceName()); |
| } finally { |
| shutdownSignal.set(true); |
| notifyThread.join(); |
| } |
| } |
| |
| @Test |
| public void notifyDelete() throws Exception { |
| // The signal that will kill the notifying thread. |
| final AtomicBoolean shutdownSignal = new AtomicBoolean(false); |
| |
| // The queue generated work is offered to. |
| final BlockingQueue<LogEvent> queue = new ArrayBlockingQueue<>(1); |
| |
| // The listener that will perform the LogEventWorkGenerator work. |
| final LogEventWorkGenerator generator = new LogEventWorkGenerator(queue, 50, TimeUnit.MILLISECONDS, shutdownSignal); |
| |
| // A thread that will attempt to notify the generator with a deleted change log. |
| final CountDownLatch notified = new CountDownLatch(1); |
| final Thread notifyThread = new Thread(() -> { |
| generator.notifyDelete("rya"); |
| notified.countDown(); |
| }); |
| |
| try { |
| // Start the thread that performs the notification. |
| notifyThread.start(); |
| |
| // Wait for the thread to indicate it has notified and check the queue for the value. |
| notified.await(200, TimeUnit.MILLISECONDS); |
| final LogEvent event = queue.poll(200, TimeUnit.MILLISECONDS); |
| assertEquals(LogEventType.DELETE, event.getEventType()); |
| assertEquals("rya", event.getRyaInstanceName()); |
| } finally { |
| shutdownSignal.set(true); |
| notifyThread.join(); |
| } |
| } |
| } |