| /** |
| * 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.Optional; |
| 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.api.queries.ChangeLogEntry; |
| import org.apache.rya.streams.api.queries.QueryChange; |
| import org.apache.rya.streams.querymanager.QueryManager.QueryEvent; |
| import org.apache.rya.streams.querymanager.QueryManager.QueryEventWorkGenerator; |
| import org.junit.Test; |
| |
| /** |
| * Unit tests the methods of {@link QueryEventWorkGenerator}. |
| */ |
| public class QueryEventWorkGeneratorTest { |
| |
| @Test |
| public void shutdownSignalKillsThread() 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<QueryEvent> queue = new ArrayBlockingQueue<>(1); |
| |
| // The listener that will perform the QueryEventWorkGenerator work. |
| final QueryEventWorkGenerator generator = |
| new QueryEventWorkGenerator("rya", new CountDownLatch(1), queue, 50, TimeUnit.MILLISECONDS, shutdownSignal); |
| |
| // A thread that will attempt to notify the generator with a created query. |
| final Thread notifyThread = new Thread(() -> { |
| generator.notify(mock(ChangeLogEntry.class), Optional.empty()); |
| }); |
| |
| // Fill the queue so that nothing may be offered to it. |
| queue.offer(QueryEvent.stopALL("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 waitsForSubscriptionWork() 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<QueryEvent> queue = new ArrayBlockingQueue<>(1); |
| |
| // The listener that will perform the QueryEventWorkGenerator work. |
| final CountDownLatch latch = new CountDownLatch(1); |
| final QueryEventWorkGenerator generator = |
| new QueryEventWorkGenerator("rya", latch, queue, 50, TimeUnit.MILLISECONDS, shutdownSignal); |
| |
| // A thread that will attempt to notify the generator with a created query. |
| final UUID queryId = UUID.randomUUID(); |
| final StreamsQuery query = new StreamsQuery(queryId, "query", true, false); |
| final Thread notifyThread = new Thread(() -> { |
| final QueryChange change = QueryChange.create(queryId, query.getSparql(), query.isActive(), query.isInsert()); |
| final ChangeLogEntry<QueryChange> entry = new ChangeLogEntry<>(0, change); |
| generator.notify(entry, Optional.of(query)); |
| }); |
| |
| // Start the thread. |
| notifyThread.start(); |
| |
| try { |
| // Wait longer than the blocking period and show the thread is still alive and nothing has been added |
| // to the work queue. |
| Thread.sleep(150); |
| assertTrue( notifyThread.isAlive() ); |
| |
| // Count down the latch. |
| latch.countDown(); |
| |
| // Show work was added to the queue and the notifying thread died. |
| final QueryEvent event = queue.poll(500, TimeUnit.MILLISECONDS); |
| final QueryEvent expected = QueryEvent.executing("rya", new StreamsQuery(queryId, query.getSparql(), query.isActive(), query.isInsert())); |
| assertEquals(expected, event); |
| } finally { |
| shutdownSignal.set(true); |
| notifyThread.join(); |
| } |
| } |
| |
| @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<QueryEvent> queue = new ArrayBlockingQueue<>(1); |
| |
| // The listener that will perform the QueryEventWorkGenerator work. |
| final CountDownLatch latch = new CountDownLatch(1); |
| latch.countDown(); |
| final QueryEventWorkGenerator generator = |
| new QueryEventWorkGenerator("rya", latch, queue, 50, TimeUnit.MILLISECONDS, shutdownSignal); |
| |
| // A thread that will attempt to notify the generator with a created query. |
| final UUID queryId = UUID.randomUUID(); |
| final StreamsQuery query = new StreamsQuery(queryId, "query", true, false); |
| final Thread notifyThread = new Thread(() -> { |
| final QueryChange change = QueryChange.create(queryId, query.getSparql(), query.isActive(), query.isInsert()); |
| final ChangeLogEntry<QueryChange> entry = new ChangeLogEntry<>(0, change); |
| generator.notify(entry, Optional.of(query)); |
| }); |
| |
| // Start the thread. |
| notifyThread.start(); |
| |
| try { |
| // Show work was added to the queue and the notifying thread died. |
| final QueryEvent event = queue.poll(500, TimeUnit.MILLISECONDS); |
| final QueryEvent expected = QueryEvent.executing("rya", new StreamsQuery(queryId, query.getSparql(), query.isActive(), query.isInsert())); |
| assertEquals(expected, event); |
| } 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<QueryEvent> queue = new ArrayBlockingQueue<>(1); |
| |
| // The listener that will perform the QueryEventWorkGenerator work. |
| final CountDownLatch latch = new CountDownLatch(1); |
| latch.countDown(); |
| final QueryEventWorkGenerator generator = |
| new QueryEventWorkGenerator("rya", latch, queue, 50, TimeUnit.MILLISECONDS, shutdownSignal); |
| |
| // A thread that will attempt to notify the generator with a deleted query. |
| final UUID queryId = UUID.randomUUID(); |
| final Thread notifyThread = new Thread(() -> { |
| final QueryChange change = QueryChange.delete(queryId); |
| final ChangeLogEntry<QueryChange> entry = new ChangeLogEntry<>(0, change); |
| generator.notify(entry, Optional.empty()); |
| }); |
| |
| // Start the thread. |
| notifyThread.start(); |
| |
| try { |
| // Show work was added to the queue and the notifying thread died. |
| final QueryEvent event = queue.poll(500, TimeUnit.MILLISECONDS); |
| final QueryEvent expected = QueryEvent.stopped("rya", queryId); |
| assertEquals(expected, event); |
| } finally { |
| shutdownSignal.set(true); |
| notifyThread.join(); |
| } |
| } |
| |
| @Test |
| public void notifyUpdate_isActive() 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<QueryEvent> queue = new ArrayBlockingQueue<>(1); |
| |
| // The listener that will perform the QueryEventWorkGenerator work. |
| final CountDownLatch latch = new CountDownLatch(1); |
| latch.countDown(); |
| final QueryEventWorkGenerator generator = |
| new QueryEventWorkGenerator("rya", latch, queue, 50, TimeUnit.MILLISECONDS, shutdownSignal); |
| |
| // A thread that will attempt to notify the generator with an update query change. |
| final UUID queryId = UUID.randomUUID(); |
| final StreamsQuery query = new StreamsQuery(queryId, "query", true, false); |
| final Thread notifyThread = new Thread(() -> { |
| final QueryChange change = QueryChange.update(queryId, true); |
| final ChangeLogEntry<QueryChange> entry = new ChangeLogEntry<>(0, change); |
| generator.notify(entry, Optional.of(query)); |
| }); |
| |
| // Start the thread. |
| notifyThread.start(); |
| |
| try { |
| // Show work was added to the queue and the notifying thread died. |
| final QueryEvent event = queue.poll(500, TimeUnit.MILLISECONDS); |
| final QueryEvent expected = QueryEvent.executing("rya", new StreamsQuery(queryId, query.getSparql(), query.isActive(), query.isInsert())); |
| assertEquals(expected, event); |
| } finally { |
| shutdownSignal.set(true); |
| notifyThread.join(); |
| } |
| } |
| |
| @Test |
| public void notifyUpdate_isNotActive() 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<QueryEvent> queue = new ArrayBlockingQueue<>(1); |
| |
| // The listener that will perform the QueryEventWorkGenerator work. |
| final CountDownLatch latch = new CountDownLatch(1); |
| latch.countDown(); |
| final QueryEventWorkGenerator generator = |
| new QueryEventWorkGenerator("rya", latch, queue, 50, TimeUnit.MILLISECONDS, shutdownSignal); |
| |
| // A thread that will attempt to notify the generator with an update query change. |
| final UUID queryId = UUID.randomUUID(); |
| final StreamsQuery query = new StreamsQuery(queryId, "query", false, false); |
| final Thread notifyThread = new Thread(() -> { |
| final QueryChange change = QueryChange.update(queryId, false); |
| final ChangeLogEntry<QueryChange> entry = new ChangeLogEntry<>(0, change); |
| generator.notify(entry, Optional.of(query)); |
| }); |
| |
| // Start the thread. |
| notifyThread.start(); |
| |
| try { |
| // Show work was added to the queue and the notifying thread died. |
| final QueryEvent event = queue.poll(500, TimeUnit.MILLISECONDS); |
| final QueryEvent expected = QueryEvent.stopped("rya", queryId); |
| assertEquals(expected, event); |
| } finally { |
| shutdownSignal.set(true); |
| notifyThread.join(); |
| } |
| } |
| } |