| /** |
| * 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.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.mockito.Mockito.doAnswer; |
| import static org.mockito.Mockito.mock; |
| |
| import java.util.UUID; |
| 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.entity.StreamsQuery; |
| import org.apache.rya.streams.querymanager.QueryManager.QueryEvent; |
| import org.apache.rya.streams.querymanager.QueryManager.QueryEventWorker; |
| import org.junit.Test; |
| |
| /** |
| * Unit tests the methods of {@link QueryManager.QueryEventWorker}. |
| */ |
| public class QueryEventWorkerTest { |
| |
| @Test |
| public void shutdownSignalKillsThread() { |
| // The signal that will kill the working thread. |
| final AtomicBoolean shutdownSignal = new AtomicBoolean(false); |
| |
| // The thread that will perform the QueryEventWorker task. |
| final Thread queryEventWorker = new Thread(new QueryEventWorker(new ArrayBlockingQueue<>(1), |
| mock(QueryExecutor.class), 50, TimeUnit.MILLISECONDS, shutdownSignal)); |
| queryEventWorker.start(); |
| |
| // Wait longer than the poll time to see if the thread died. Show that it is still running. |
| assertTrue(ThreadUtil.stillAlive(queryEventWorker, 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(queryEventWorker, 1000)); |
| } |
| |
| @Test |
| public void executingWork() throws Exception { |
| // The signal that will kill the working thread. |
| final AtomicBoolean shutdownSignal = new AtomicBoolean(false); |
| |
| // The queue used to send the execute work to the thread. |
| final BlockingQueue<QueryEvent> queue = new ArrayBlockingQueue<>(1); |
| |
| // The message that indicates a query needs to be executed. |
| final String ryaInstance = "rya"; |
| final StreamsQuery query = new StreamsQuery(UUID.randomUUID(), "sparql", true); |
| final QueryEvent executingEvent = QueryEvent.executing(ryaInstance, query); |
| |
| // Release a latch if the startQuery method on the queryExecutor is invoked with the correct values. |
| final CountDownLatch startQueryInvoked = new CountDownLatch(1); |
| final QueryExecutor queryExecutor = mock(QueryExecutor.class); |
| doAnswer(invocation -> { |
| startQueryInvoked.countDown(); |
| return null; |
| }).when(queryExecutor).startQuery(ryaInstance, query); |
| |
| // The thread that will perform the QueryEventWorker task. |
| final Thread queryEventWorker = new Thread(new QueryEventWorker(queue, |
| queryExecutor, 50, TimeUnit.MILLISECONDS, shutdownSignal)); |
| try { |
| queryEventWorker.start(); |
| |
| // Provide a message indicating a query needs to be executing. |
| queue.put(executingEvent); |
| |
| // Verify the Query Executor was told to start the query. |
| assertTrue( startQueryInvoked.await(150, TimeUnit.MILLISECONDS) ); |
| } finally { |
| shutdownSignal.set(true); |
| queryEventWorker.join(); |
| } |
| } |
| |
| @Test |
| public void stoppedWork() throws Exception { |
| // The signal that will kill the working thread. |
| final AtomicBoolean shutdownSignal = new AtomicBoolean(false); |
| |
| // The queue used to send the execute work to the thread. |
| final BlockingQueue<QueryEvent> queue = new ArrayBlockingQueue<>(1); |
| |
| // The message that indicates a query needs to be stopped. |
| final UUID queryId = UUID.randomUUID(); |
| final QueryEvent stoppedEvent = QueryEvent.stopped("rya", queryId); |
| |
| // Release a latch if the stopQuery method on the queryExecutor is invoked with the correct values. |
| final CountDownLatch stopQueryInvoked = new CountDownLatch(1); |
| final QueryExecutor queryExecutor = mock(QueryExecutor.class); |
| doAnswer(invocation -> { |
| stopQueryInvoked.countDown(); |
| return null; |
| }).when(queryExecutor).stopQuery(queryId); |
| |
| final Thread queryEventWorker = new Thread(new QueryEventWorker(queue, |
| queryExecutor, 50, TimeUnit.MILLISECONDS, shutdownSignal)); |
| try { |
| // The thread that will perform the QueryEventWorker task. |
| queryEventWorker.start(); |
| |
| // Provide a message indicating a query needs to be executing. |
| queue.put(stoppedEvent); |
| |
| // Verify the Query Executor was told to stop the query. |
| assertTrue( stopQueryInvoked.await(150, TimeUnit.MILLISECONDS) ); |
| } finally { |
| shutdownSignal.set(true); |
| queryEventWorker.join(); |
| } |
| } |
| |
| @Test |
| public void stopAllWork() throws Exception { |
| // The signal that will kill the working thread. |
| final AtomicBoolean shutdownSignal = new AtomicBoolean(false); |
| |
| // The queue used to send the execute work to the thread. |
| final BlockingQueue<QueryEvent> queue = new ArrayBlockingQueue<>(1); |
| |
| // The message that indicates all queries for a rya instance need to be stopped. |
| final String ryaInstance = "rya"; |
| final QueryEvent stopAllEvent = QueryEvent.stopALL(ryaInstance); |
| |
| // Release a latch if the stopQuery method on the queryExecutor is invoked with the correct values. |
| final CountDownLatch testMethodInvoked = new CountDownLatch(1); |
| final QueryExecutor queryExecutor = mock(QueryExecutor.class); |
| doAnswer(invocation -> { |
| testMethodInvoked.countDown(); |
| return null; |
| }).when(queryExecutor).stopAll(ryaInstance); |
| |
| final Thread queryEventWorker = new Thread(new QueryEventWorker(queue, |
| queryExecutor, 50, TimeUnit.MILLISECONDS, shutdownSignal)); |
| try { |
| // The thread that will perform the QueryEventWorker task. |
| queryEventWorker.start(); |
| |
| // Provide a message indicating a query needs to be executing. |
| queue.put(stopAllEvent); |
| |
| // Verify the Query Executor was told to stop all the queries. |
| assertTrue( testMethodInvoked.await(150, TimeUnit.MILLISECONDS) ); |
| } finally { |
| shutdownSignal.set(true); |
| queryEventWorker.join(); |
| } |
| } |
| } |