| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.storm.topology; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.concurrent.FutureTask; |
| import org.apache.storm.utils.Utils; |
| import org.apache.storm.windowing.persistence.SimpleWindowPartitionCache; |
| import org.apache.storm.windowing.persistence.WindowPartitionCache; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| /** |
| * Unit tests for {@link SimpleWindowPartitionCache} |
| */ |
| public class SimpleWindowPartitionCacheTest { |
| |
| @Before |
| public void setUp() throws Exception { |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testBuildInvalid1() throws Exception { |
| SimpleWindowPartitionCache.<Integer, Integer>newBuilder() |
| .maximumSize(0) |
| .build(null); |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testBuildInvalid2() throws Exception { |
| SimpleWindowPartitionCache.<Integer, Integer>newBuilder() |
| .maximumSize(-1) |
| .build(null); |
| } |
| |
| @Test(expected = NullPointerException.class) |
| public void testBuildInvalid3() throws Exception { |
| SimpleWindowPartitionCache.<Integer, Integer>newBuilder() |
| .maximumSize(1) |
| .build(null); |
| } |
| |
| @Test |
| public void testBuildOk() throws Exception { |
| SimpleWindowPartitionCache.<Integer, Integer>newBuilder() |
| .maximumSize(1) |
| .removalListener((key, val, removalCause) -> { |
| }) |
| .build(key -> key); |
| } |
| |
| @Test |
| public void testGet() throws Exception { |
| List<Integer> removed = new ArrayList<>(); |
| List<Integer> loaded = new ArrayList<>(); |
| SimpleWindowPartitionCache<Integer, Integer> cache = |
| SimpleWindowPartitionCache.<Integer, Integer>newBuilder() |
| .maximumSize(2) |
| .removalListener((key, val, removalCause) -> removed.add(key)) |
| .build(key -> { |
| loaded.add(key); |
| return key; |
| }); |
| |
| cache.get(1); |
| cache.get(2); |
| cache.get(3); |
| Assert.assertEquals(Arrays.asList(1, 2, 3), loaded); |
| // since 2 is the largest un-pinned entry before 3 is loaded |
| Assert.assertEquals(Collections.singletonList(2), removed); |
| } |
| |
| @Test(expected = NullPointerException.class) |
| public void testGetNull() throws Exception { |
| SimpleWindowPartitionCache<Integer, Integer> cache = |
| SimpleWindowPartitionCache.<Integer, Integer>newBuilder() |
| .maximumSize(2) |
| .build(key -> null); |
| |
| cache.get(1); |
| } |
| |
| @Test |
| public void testEvictNoRemovalListener() throws Exception { |
| SimpleWindowPartitionCache<Integer, Integer> cache = |
| SimpleWindowPartitionCache.<Integer, Integer>newBuilder() |
| .maximumSize(1) |
| .build(key -> { |
| return key; |
| }); |
| cache.get(1); |
| cache.get(2); |
| Assert.assertEquals(Collections.singletonMap(2, 2), cache.asMap()); |
| cache.invalidate(2); |
| Assert.assertEquals(Collections.emptyMap(), cache.asMap()); |
| } |
| |
| @Test |
| public void testPinAndGet() throws Exception { |
| List<Integer> removed = new ArrayList<>(); |
| List<Integer> loaded = new ArrayList<>(); |
| SimpleWindowPartitionCache<Integer, Integer> cache = |
| SimpleWindowPartitionCache.<Integer, Integer>newBuilder() |
| .maximumSize(1) |
| .removalListener(new WindowPartitionCache.RemovalListener<Integer, Integer>() { |
| @Override |
| public void onRemoval(Integer key, Integer val, WindowPartitionCache.RemovalCause removalCause) { |
| removed.add(key); |
| } |
| }) |
| .build(new WindowPartitionCache.CacheLoader<Integer, Integer>() { |
| @Override |
| public Integer load(Integer key) { |
| loaded.add(key); |
| return key; |
| } |
| }); |
| |
| cache.get(1); |
| cache.pinAndGet(2); |
| cache.get(3); |
| Assert.assertEquals(Arrays.asList(1, 2, 3), loaded); |
| Assert.assertEquals(Collections.singletonList(1), removed); |
| } |
| |
| @Test |
| public void testInvalidate() throws Exception { |
| List<Integer> removed = new ArrayList<>(); |
| List<Integer> loaded = new ArrayList<>(); |
| SimpleWindowPartitionCache<Integer, Integer> cache = |
| SimpleWindowPartitionCache.<Integer, Integer>newBuilder() |
| .maximumSize(1) |
| .removalListener((key, val, removalCause) -> removed.add(key)) |
| .build(key -> { |
| loaded.add(key); |
| return key; |
| }); |
| |
| cache.pinAndGet(1); |
| cache.invalidate(1); |
| Assert.assertEquals(Collections.singletonList(1), loaded); |
| Assert.assertEquals(Collections.emptyList(), removed); |
| Assert.assertEquals(cache.asMap(), Collections.singletonMap(1, 1)); |
| |
| cache.unpin(1); |
| cache.invalidate(1); |
| Assert.assertTrue(cache.asMap().isEmpty()); |
| } |
| |
| |
| @Test(timeout = 10000) |
| public void testConcurrentGet() throws Exception { |
| List<Integer> loaded = new ArrayList<>(); |
| SimpleWindowPartitionCache<Integer, Object> cache = |
| SimpleWindowPartitionCache.<Integer, Object>newBuilder() |
| .maximumSize(1) |
| .build(key -> { |
| Utils.sleep(1000); |
| loaded.add(key); |
| return new Object(); |
| }); |
| |
| FutureTask<Object> ft1 = new FutureTask<>(() -> cache.pinAndGet(1)); |
| FutureTask<Object> ft2 = new FutureTask<>(() -> cache.pinAndGet(1)); |
| Thread t1 = new Thread(ft1); |
| Thread t2 = new Thread(ft2); |
| t1.start(); |
| t2.start(); |
| t1.join(); |
| t2.join(); |
| |
| Assert.assertEquals(Collections.singletonList(1), loaded); |
| Assert.assertEquals(ft1.get(), ft2.get()); |
| } |
| |
| @Test |
| public void testConcurrentUnpin() throws Exception { |
| SimpleWindowPartitionCache<Integer, Object> cache = |
| SimpleWindowPartitionCache.<Integer, Object>newBuilder() |
| .maximumSize(1) |
| .build(key -> new Object()); |
| |
| cache.pinAndGet(1); |
| FutureTask<Boolean> ft1 = new FutureTask<>(() -> cache.unpin(1)); |
| FutureTask<Boolean> ft2 = new FutureTask<>(() -> cache.unpin(1)); |
| Thread t1 = new Thread(ft1); |
| Thread t2 = new Thread(ft2); |
| t1.start(); |
| t2.start(); |
| t1.join(); |
| t2.join(); |
| |
| Assert.assertTrue(ft1.get() || ft2.get()); |
| Assert.assertFalse(ft1.get() && ft2.get()); |
| } |
| |
| @Test |
| public void testEviction() throws Exception { |
| List<Integer> removed = new ArrayList<>(); |
| SimpleWindowPartitionCache<Integer, Object> cache = |
| SimpleWindowPartitionCache.<Integer, Object>newBuilder() |
| .maximumSize(1) |
| .removalListener((key, val, removalCause) -> removed.add(key)) |
| .build(key -> new Object()); |
| |
| cache.get(0); |
| cache.pinAndGet(1); |
| Assert.assertEquals(Collections.singletonList(0), removed); |
| cache.get(2); |
| Assert.assertEquals(Collections.singletonList(0), removed); |
| } |
| } |