Yuta HIGUCHI | 598e57e | 2014-06-16 21:19:01 -0700 | [diff] [blame] | 1 | package net.onrc.onos.core.datastore.hazelcast; |
| 2 | |
| 3 | import static org.junit.Assert.*; |
| 4 | |
| 5 | import java.util.ArrayList; |
| 6 | import java.util.List; |
| 7 | import java.util.Queue; |
| 8 | import java.util.UUID; |
| 9 | import java.util.concurrent.Callable; |
| 10 | import java.util.concurrent.ConcurrentLinkedQueue; |
| 11 | import java.util.concurrent.ConcurrentMap; |
| 12 | import java.util.concurrent.ConcurrentSkipListMap; |
| 13 | import java.util.concurrent.ExecutionException; |
| 14 | import java.util.concurrent.ExecutorService; |
| 15 | import java.util.concurrent.Executors; |
| 16 | import java.util.concurrent.Future; |
| 17 | |
| 18 | import net.onrc.onos.core.datastore.ObjectDoesntExistException; |
| 19 | import net.onrc.onos.core.util.distributed.DistributedAtomicLong; |
| 20 | |
| 21 | import org.junit.Before; |
| 22 | import org.junit.Test; |
| 23 | |
| 24 | /** |
| 25 | * Test cases for HZDistributedAtomicLong. |
| 26 | */ |
| 27 | public class HZDistributedAtomicLongTest { |
Yuta HIGUCHI | 598e57e | 2014-06-16 21:19:01 -0700 | [diff] [blame] | 28 | |
| 29 | static final String TEST_COUNTER_NAME = "Counter" + UUID.randomUUID(); |
| 30 | |
| 31 | DistributedAtomicLong counter; |
| 32 | |
| 33 | @Before |
| 34 | public void setUp() throws Exception { |
| 35 | counter = new HZDistributedAtomicLong( |
| 36 | HZClient.getClient(), TEST_COUNTER_NAME); |
| 37 | counter.set(0L); |
| 38 | } |
| 39 | |
| 40 | @Test |
| 41 | public void testGet() { |
| 42 | assertEquals(0L, counter.get()); |
| 43 | } |
| 44 | |
| 45 | @Test |
| 46 | public void testAddAndGet() { |
| 47 | assertEquals(0L, counter.get()); |
| 48 | assertEquals(1L, counter.addAndGet(1L)); |
| 49 | assertEquals(3L, counter.addAndGet(2L)); |
| 50 | assertEquals(7L, counter.addAndGet(4L)); |
| 51 | } |
| 52 | |
| 53 | @Test |
| 54 | public void testSet() { |
| 55 | counter.set(42L); |
| 56 | assertEquals(42L, counter.get()); |
| 57 | } |
| 58 | |
| 59 | @Test |
| 60 | public void testIncrementAndGet() { |
| 61 | assertEquals(1L, counter.incrementAndGet()); |
| 62 | assertEquals(2L, counter.incrementAndGet()); |
| 63 | assertEquals(3L, counter.incrementAndGet()); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Callable task incrementing atomicLong. |
| 68 | */ |
| 69 | private static final class AdderTask implements Callable<Long> { |
| 70 | // using Map as Set |
| 71 | private final ConcurrentMap<Long, Long> uniquenessTestSet; |
| 72 | // Queue given here should be Thread-safe |
| 73 | private final Queue<Long> incrementTimes; |
| 74 | private final HZDistributedAtomicLong counter; |
| 75 | private final int numIncrements; |
| 76 | |
| 77 | /** |
| 78 | * Constructor. |
| 79 | * |
| 80 | * @param numIncrements number of increments to execute |
| 81 | * @param uniquenessTestSet ThreadSafe Map to store increment result |
| 82 | * @param incrementTimes ThreadSafe Queue to store time it |
| 83 | * took on each increment |
| 84 | */ |
| 85 | public AdderTask(int numIncrements, |
| 86 | ConcurrentMap<Long, Long> uniquenessTestSet, |
| 87 | Queue<Long> incrementTimes) { |
| 88 | |
| 89 | super(); |
| 90 | this.uniquenessTestSet = uniquenessTestSet; |
| 91 | this.incrementTimes = incrementTimes; |
| 92 | this.counter = new HZDistributedAtomicLong( |
| 93 | HZClient.getClient(), TEST_COUNTER_NAME); |
| 94 | this.numIncrements = numIncrements; |
| 95 | } |
| 96 | |
| 97 | @Override |
| 98 | public Long call() throws ObjectDoesntExistException { |
| 99 | for (int i = 0; i < numIncrements; ++i) { |
| 100 | final long start = System.nanoTime(); |
| 101 | final long incremented = counter.addAndGet(1L); |
| 102 | incrementTimes.add(System.nanoTime() - start); |
| 103 | final Long expectNull = uniquenessTestSet.putIfAbsent( |
| 104 | incremented, incremented); |
| 105 | assertNull(expectNull); |
| 106 | } |
| 107 | return null; |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | private static final int NUM_THREADS = Integer.parseInt( |
| 112 | System.getProperty( |
| 113 | "HZDistributedAtomicLongTest.NUM_THREADS", |
| 114 | System.getProperty("NUM_THREADS", |
| 115 | "10"))); |
| 116 | |
| 117 | private static final int NUM_INCREMENTS = Integer.parseInt( |
| 118 | System.getProperty( |
| 119 | "HZDistributedAtomicLongTest.NUM_INCREMENTS", |
| 120 | System.getProperty("NUM_INCREMENTS", |
| 121 | "100"))); |
| 122 | |
| 123 | /** |
| 124 | * Increment using multiple threads to test addition is atomic. |
| 125 | */ |
| 126 | @Test |
| 127 | public void testConcurrentAddAndGet() throws InterruptedException, ExecutionException { |
| 128 | ExecutorService executor = Executors.newFixedThreadPool(NUM_THREADS); |
| 129 | |
| 130 | // using Map as Set |
| 131 | ConcurrentMap<Long, Long> uniquenessTestSet = new ConcurrentSkipListMap<>(); |
| 132 | Queue<Long> incrementTimes = new ConcurrentLinkedQueue<>(); |
| 133 | |
| 134 | // Start NUM_THREADS threads and increment NUM_INCREMENTS times each |
| 135 | List<Callable<Long>> tasks = new ArrayList<>(NUM_THREADS); |
| 136 | for (int i = 0; i < NUM_THREADS; ++i) { |
| 137 | tasks.add(new AdderTask(NUM_INCREMENTS, |
| 138 | uniquenessTestSet, |
| 139 | incrementTimes)); |
| 140 | } |
| 141 | List<Future<Long>> futures = executor.invokeAll(tasks); |
| 142 | |
| 143 | // wait for all tasks to end |
| 144 | for (Future<Long> future : futures) { |
| 145 | future.get(); |
| 146 | } |
| 147 | |
| 148 | |
| 149 | assertEquals(NUM_THREADS * NUM_INCREMENTS , uniquenessTestSet.size()); |
| 150 | |
| 151 | // check uniqueness of result |
| 152 | long prevValue = 0; |
| 153 | for (Long value : uniquenessTestSet.keySet()) { |
| 154 | assertEquals((prevValue + 1), value.longValue()); |
| 155 | prevValue = value; |
| 156 | } |
| 157 | |
| 158 | long max = 0L; |
| 159 | long min = Long.MAX_VALUE; |
| 160 | long sum = 0L; |
| 161 | for (Long time : incrementTimes) { |
| 162 | sum += time; |
| 163 | max = Math.max(max, time); |
| 164 | min = Math.min(min, time); |
| 165 | } |
| 166 | System.err.printf("incrementCounter: th, incs, tot_incs," |
| 167 | + " avg(ns), min(ns), max(ns), T-put(1s/avg)\n"); |
| 168 | System.err.printf("incrementCounter: %d, %d, %d," |
| 169 | + " %f, %d, %d, %f\n", |
| 170 | NUM_THREADS, NUM_INCREMENTS, incrementTimes.size(), |
| 171 | sum / (double) incrementTimes.size(), min, max, |
| 172 | Math.pow(10, 9) * incrementTimes.size() / sum); |
| 173 | |
| 174 | executor.shutdown(); |
| 175 | } |
| 176 | |
| 177 | } |