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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.curator.stats;
import org.junit.Test;
import java.time.Duration;
import java.time.Instant;
import java.util.Map;
import java.util.stream.Collectors;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
/**
* @author hakon
*/
public class LockAttemptSamplesTest {
private final LockAttemptSamples samples = new LockAttemptSamples(2);
private ThreadLockStats threadLockStats;
@Test
public void test() {
threadLockStats = new ThreadLockStats(Thread.currentThread());
assertTrue(maybeSample("1", 10));
// new sample has longer duration
assertTrue(maybeSample("1", 11));
// new sample has shorter duration
assertFalse(maybeSample("1", 10));
// new path, will be added
assertTrue(maybeSample("2", 5));
// new path, too low duration be added
assertFalse(maybeSample("3", 4));
// new path, expels "2"
assertTrue(maybeSample("4", 6));
Map<String, LockAttempt> lockAttempts = samples.asList().stream().collect(Collectors.toMap(
lockAttempt -> lockAttempt.getLockPath(),
lockAttempt -> lockAttempt));
assertEquals(2, lockAttempts.size());
assertTrue(lockAttempts.containsKey("1"));
assertEquals(Duration.ofSeconds(11), lockAttempts.get("1").getStableTotalDuration());
assertTrue(lockAttempts.containsKey("4"));
assertEquals(Duration.ofSeconds(6), lockAttempts.get("4").getStableTotalDuration());
}
private boolean maybeSample(String lockPath, int secondsDuration) {
LockAttempt lockAttempt = LockAttempt.invokingAcquire(threadLockStats, lockPath,
Duration.ofSeconds(1), new LockMetrics(), false);
Instant instant = lockAttempt.getTimeAcquiredWasInvoked().plus(Duration.ofSeconds(secondsDuration));
lockAttempt.setTerminalState(LockAttempt.LockState.RELEASED, instant);
return samples.maybeSample(lockAttempt);
}
}
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