| /* |
| * 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.lucene.monitor; |
| |
| import java.io.IOException; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.util.NamedThreadFactory; |
| |
| import static org.hamcrest.core.Is.is; |
| |
| public class TestCachePurging extends MonitorTestBase { |
| |
| public void testQueryCacheCanBePurged() throws IOException { |
| |
| final AtomicInteger purgeCount = new AtomicInteger(); |
| MonitorUpdateListener listener = new MonitorUpdateListener() { |
| @Override |
| public void onPurge() { |
| purgeCount.incrementAndGet(); |
| } |
| }; |
| |
| try (Monitor monitor = new Monitor(ANALYZER)) { |
| MonitorQuery[] queries = new MonitorQuery[]{ |
| new MonitorQuery("1", parse("test1 test4")), |
| new MonitorQuery("2", parse("test2")), |
| new MonitorQuery("3", parse("test3")) |
| }; |
| monitor.addQueryIndexUpdateListener(listener); |
| monitor.register(queries); |
| assertThat(monitor.getQueryCount(), is(3)); |
| assertThat(monitor.getDisjunctCount(), is(4)); |
| assertThat(monitor.getQueryCacheStats().cachedQueries, is(4)); |
| |
| Document doc = new Document(); |
| doc.add(newTextField("field", "test1 test2 test3", Field.Store.NO)); |
| assertThat(monitor.match(doc, QueryMatch.SIMPLE_MATCHER).getMatchCount(), is(3)); |
| |
| monitor.deleteById("1"); |
| assertThat(monitor.getQueryCount(), is(2)); |
| assertThat(monitor.getQueryCacheStats().cachedQueries, is(4)); |
| assertThat(monitor.match(doc, QueryMatch.SIMPLE_MATCHER).getMatchCount(), is(2)); |
| |
| monitor.purgeCache(); |
| assertThat(monitor.getQueryCacheStats().cachedQueries, is(2)); |
| |
| MatchingQueries<QueryMatch> result = monitor.match(doc, QueryMatch.SIMPLE_MATCHER); |
| assertThat(result.getMatchCount(), is(2)); |
| assertTrue(purgeCount.get() > 0); |
| } |
| } |
| |
| public void testConcurrentPurges() throws Exception { |
| int iters = Integer.getInteger("purgeIters", 1); |
| for (int i = 0; i < iters; i++) { |
| doConcurrentPurgesAndUpdatesTest(); |
| } |
| } |
| |
| private static void doConcurrentPurgesAndUpdatesTest() throws Exception { |
| |
| final CountDownLatch startUpdating = new CountDownLatch(1); |
| final CountDownLatch finishUpdating = new CountDownLatch(1); |
| |
| try (final Monitor monitor = new Monitor(ANALYZER)) { |
| Runnable updaterThread = () -> { |
| try { |
| startUpdating.await(); |
| for (int i = 200; i < 400; i++) { |
| monitor.register(newMonitorQuery(i)); |
| } |
| finishUpdating.countDown(); |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| }; |
| |
| ExecutorService executor = Executors.newFixedThreadPool(1, new NamedThreadFactory("updaters")); |
| try { |
| executor.submit(updaterThread); |
| |
| for (int i = 0; i < 200; i++) { |
| monitor.register(newMonitorQuery(i)); |
| } |
| for (int i = 20; i < 80; i++) { |
| monitor.deleteById(Integer.toString(i)); |
| } |
| |
| assertEquals(200, monitor.getQueryCacheStats().cachedQueries); |
| |
| startUpdating.countDown(); |
| monitor.purgeCache(); |
| finishUpdating.await(); |
| |
| assertEquals(340, monitor.getQueryCacheStats().cachedQueries); |
| Document doc = new Document(); |
| doc.add(newTextField("field", "test", Field.Store.NO)); |
| MatchingQueries<QueryMatch> matcher = monitor.match(doc, QueryMatch.SIMPLE_MATCHER); |
| assertEquals(0, matcher.getErrors().size()); |
| assertEquals(340, matcher.getMatchCount()); |
| } finally { |
| executor.shutdownNow(); |
| } |
| } |
| } |
| |
| private static MonitorQuery newMonitorQuery(int id) { |
| return new MonitorQuery(Integer.toString(id), parse("+test " + id)); |
| } |
| |
| public void testBackgroundPurges() throws IOException, InterruptedException { |
| |
| MonitorConfiguration config = new MonitorConfiguration().setPurgeFrequency(50, TimeUnit.MILLISECONDS); |
| try (Monitor monitor = new Monitor(ANALYZER, Presearcher.NO_FILTERING, config)) { |
| |
| assertEquals(-1, monitor.getQueryCacheStats().lastPurged); |
| |
| for (int i = 0; i < 100; i++) { |
| monitor.register(newMonitorQuery(i)); |
| } |
| assertEquals(100, monitor.getQueryCacheStats().cachedQueries); |
| |
| monitor.deleteById("5"); |
| assertEquals(99, monitor.getQueryCacheStats().queries); |
| |
| CountDownLatch latch = new CountDownLatch(1); |
| monitor.addQueryIndexUpdateListener(new MonitorUpdateListener() { |
| @Override |
| public void onPurge() { |
| // It can sometimes take a couple of purge runs to get everything in sync |
| if (monitor.getQueryCacheStats().cachedQueries == 99) |
| latch.countDown(); |
| } |
| }); |
| |
| assertTrue(latch.await(5, TimeUnit.SECONDS)); |
| assertEquals(99, monitor.getQueryCacheStats().queries); |
| assertEquals(99, monitor.getQueryCacheStats().cachedQueries); |
| assertTrue(monitor.getQueryCacheStats().lastPurged > 0); |
| } |
| } |
| } |