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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.core;
import com.yahoo.jdisc.Metric;
import com.yahoo.jdisc.test.TestDriver;
import com.yahoo.test.ManualClock;
import org.junit.jupiter.api.Test;
import java.time.Duration;
import java.time.Instant;
import java.util.Map;
import java.util.concurrent.ScheduledExecutorService;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.mockito.Mockito.mock;
/**
* @author bjorncs
*/
public class ContainerWatchdogTest {
@Test
void watchdog_counts_stale_container() {
TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi();
ManualClock clock = new ManualClock(Instant.EPOCH);
DummyMetric metric = new DummyMetric();
ContainerWatchdog watchdog = new ContainerWatchdog(mock(ScheduledExecutorService.class), clock);
ActiveContainer containerWithoutRetainedResources = new ActiveContainer(driver.newContainerBuilder());
watchdog.onContainerActivation(containerWithoutRetainedResources);
assertEquals(0, runMonitorStepAndGetStaleContainerCount(watchdog, metric));
clock.advance(Duration.ofHours(1));
watchdog.onContainerActivation(null);
assertEquals(0, runMonitorStepAndGetStaleContainerCount(watchdog, metric));
clock.advance(ContainerWatchdog.GRACE_PERIOD);
assertEquals(0, runMonitorStepAndGetStaleContainerCount(watchdog, metric));
clock.advance(Duration.ofSeconds(1));
assertEquals(1, runMonitorStepAndGetStaleContainerCount(watchdog, metric));
containerWithoutRetainedResources.release();
assertEquals(0, runMonitorStepAndGetStaleContainerCount(watchdog, metric));
}
private static int runMonitorStepAndGetStaleContainerCount(ContainerWatchdog watchdog, DummyMetric metric) {
watchdog.monitorDeactivatedContainers();
watchdog.emitMetrics(metric);
return metric.value;
}
private static class DummyMetric implements Metric {
int value;
@Override
public void set(String key, Number val, Context ctx) {
this.value = val.intValue();
}
@Override
public void add(String key, Number val, Context ctx) {
throw new UnsupportedOperationException();
}
@Override
public Context createContext(Map<String, ?> properties) {
throw new UnsupportedOperationException();
}
}
}
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