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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.orchestrator.status;
import com.yahoo.jdisc.Metric;
import com.yahoo.jdisc.Timer;
import com.yahoo.jdisc.test.TestTimer;
import com.yahoo.vespa.applicationmodel.ApplicationInstanceId;
import com.yahoo.vespa.applicationmodel.ApplicationInstanceReference;
import com.yahoo.vespa.applicationmodel.TenantId;
import com.yahoo.vespa.curator.Curator;
import com.yahoo.vespa.orchestrator.OrchestratorContext;
import com.yahoo.vespa.service.monitor.AntiServiceMonitor;
import com.yahoo.vespa.service.monitor.CriticalRegion;
import org.apache.curator.framework.recipes.locks.InterProcessMutex;
import org.junit.Test;
import org.mockito.ArgumentCaptor;
import java.time.Duration;
import static org.junit.Assert.assertEquals;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;
/**
* @author hakonhall
*/
public class ZkStatusService2Test {
private final Curator curator = mock(Curator.class);
private final Timer timer = new TestTimer();
private final Metric metric = mock(Metric.class);
private final HostInfosCache cache = mock(HostInfosCache.class);
private final CriticalRegion criticalRegion = mock(CriticalRegion.class);
private final AntiServiceMonitor antiServiceMonitor = mock(AntiServiceMonitor.class);
private final ZkStatusService zkStatusService =
new ZkStatusService(curator, metric, timer, cache, antiServiceMonitor);
private final OrchestratorContext context = mock(OrchestratorContext.class);
private final InterProcessMutex mutex = mock(InterProcessMutex.class);
private final ApplicationInstanceReference reference = new ApplicationInstanceReference(
new TenantId("tenant"), new ApplicationInstanceId("app:dev:us-east-1:default"));
@Test
public void verifyLocks() throws Exception {
when(context.isProbe()).thenReturn(true);
when(context.hasLock(any())).thenReturn(false);
when(context.registerLockAcquisition(any(), any())).thenReturn(false);
when(curator.createMutex(any())).thenReturn(mutex);
when(mutex.acquire(anyLong(), any())).thenReturn(true);
when(antiServiceMonitor.disallowDuperModelLockAcquisition(any())).thenReturn(criticalRegion);
when(context.getTimeLeft()).thenReturn(Duration.ofSeconds(12));
verify(antiServiceMonitor, times(0)).disallowDuperModelLockAcquisition(any());
try (ApplicationLock lock = zkStatusService.lockApplication(context, reference)) {
verify(antiServiceMonitor, times(1)).disallowDuperModelLockAcquisition(any());
verify(criticalRegion, times(0)).close();
}
verify(criticalRegion, times(1)).close();
verify(curator, times(1)).createMutex(any());
verify(mutex, times(1)).acquire(anyLong(), any());
verify(mutex, times(1)).release();
verify(context, times(1)).hasLock(any());
verify(context, times(1)).registerLockAcquisition(any(), any());
verifyNoMoreInteractions(mutex, antiServiceMonitor, criticalRegion);
// Now the non-probe suspension
when(context.isProbe()).thenReturn(false);
verify(antiServiceMonitor, times(1)).disallowDuperModelLockAcquisition(any());
try (ApplicationLock lock = zkStatusService.lockApplication(context, reference)) {
verify(antiServiceMonitor, times(2)).disallowDuperModelLockAcquisition(any());
verify(criticalRegion, times(1)).close();
}
verify(criticalRegion, times(2)).close();
verify(mutex, times(2)).acquire(anyLong(), any());
verify(mutex, times(2)).release();
verify(context, times(2)).hasLock(any());
verify(context, times(2)).registerLockAcquisition(any(), any());
verifyNoMoreInteractions(mutex, antiServiceMonitor, criticalRegion);
}
@Test
public void verifyLargeLocks() throws Exception {
when(context.isProbe()).thenReturn(true);
when(context.hasLock(any())).thenReturn(false);
when(context.registerLockAcquisition(any(), any())).thenReturn(true);
when(curator.createMutex(any())).thenReturn(mutex);
when(mutex.acquire(anyLong(), any())).thenReturn(true);
when(antiServiceMonitor.disallowDuperModelLockAcquisition(any())).thenReturn(criticalRegion);
when(context.getTimeLeft()).thenReturn(Duration.ofSeconds(12));
try (ApplicationLock lock = zkStatusService.lockApplication(context, reference)) {
// nothing
}
verify(curator, times(1)).createMutex(any());
verify(mutex, times(1)).acquire(anyLong(), any());
verify(mutex, times(0)).release();
verify(context, times(1)).hasLock(any());
verify(context, times(1)).registerLockAcquisition(any(), any());
verify(antiServiceMonitor, times(1)).disallowDuperModelLockAcquisition(any());
verify(criticalRegion, times(0)).close();
verifyNoMoreInteractions(mutex, antiServiceMonitor, criticalRegion);
// Now the non-probe suspension
when(context.isProbe()).thenReturn(false);
when(context.hasLock(any())).thenReturn(true);
when(context.registerLockAcquisition(any(), any())).thenReturn(false);
try (ApplicationLock lock = zkStatusService.lockApplication(context, reference)) {
// nothing
}
// No (additional) acquire, and no releases.
verify(mutex, times(1)).acquire(anyLong(), any());
verify(mutex, times(0)).release();
verify(context, times(2)).hasLock(any());
verify(context, times(1)).registerLockAcquisition(any(), any());
verify(antiServiceMonitor, times(1)).disallowDuperModelLockAcquisition(any());
verify(criticalRegion, times(0)).close();
verifyNoMoreInteractions(mutex, antiServiceMonitor, criticalRegion);
// Verify the context runnable releases the mutex
ArgumentCaptor<Runnable> runnableCaptor = ArgumentCaptor.forClass(Runnable.class);
verify(context, times(1)).registerLockAcquisition(any(), runnableCaptor.capture());
assertEquals(1, runnableCaptor.getAllValues().size());
runnableCaptor.getAllValues().forEach(Runnable::run);
verify(mutex, times(1)).acquire(anyLong(), any());
verify(mutex, times(1)).release();
verify(criticalRegion, times(1)).close();
verifyNoMoreInteractions(mutex, antiServiceMonitor, criticalRegion);
}
}
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