heron/healthmgr/tests/java/org/apache/heron/healthmgr/detectors/LargeWaitQueueDetectorTest.java

/**
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 * 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
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package org.apache.heron.healthmgr.detectors;

import java.time.Instant;
import java.util.ArrayList;
import java.util.Collection;

import com.microsoft.dhalion.core.Measurement;
import com.microsoft.dhalion.core.Symptom;
import com.microsoft.dhalion.policy.PoliciesExecutor;

import org.junit.Test;

import org.apache.heron.healthmgr.HealthPolicyConfig;

import static org.apache.heron.healthmgr.detectors.LargeWaitQueueDetector.CONF_SIZE_LIMIT;
import static org.apache.heron.healthmgr.sensors.BaseSensor.MetricName.METRIC_WAIT_Q_SIZE;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

public class LargeWaitQueueDetectorTest {
  @Test
  public void testConfigAndFilter() {
    HealthPolicyConfig config = mock(HealthPolicyConfig.class);
    when(config.getConfig(CONF_SIZE_LIMIT, 1000)).thenReturn(20);

    Measurement measurement1 = new Measurement(
        "bolt", "i1", METRIC_WAIT_Q_SIZE.text(), Instant.ofEpochSecond(1497892222), 21);
    Measurement measurement2 = new Measurement(
        "bolt", "i1", METRIC_WAIT_Q_SIZE.text(), Instant.ofEpochSecond(1497892322), 21);

    Collection<Measurement> metrics = new ArrayList<>();
    metrics.add(measurement1);
    metrics.add(measurement2);

    LargeWaitQueueDetector detector = new LargeWaitQueueDetector(config);
    PoliciesExecutor.ExecutionContext context = mock(PoliciesExecutor.ExecutionContext.class);
    when(context.checkpoint()).thenReturn(Instant.now());
    detector.initialize(context);
    Collection<Symptom> symptoms = detector.detect(metrics);

    assertEquals(1, symptoms.size());
    assertEquals(1, symptoms.iterator().next().assignments().size());


    measurement1 = new Measurement(
        "bolt", "i1", METRIC_WAIT_Q_SIZE.text(), Instant.ofEpochSecond(1497892222), 11);
    measurement2 = new Measurement(
        "bolt", "i1", METRIC_WAIT_Q_SIZE.text(), Instant.ofEpochSecond(1497892322), 10);

    metrics = new ArrayList<>();
    metrics.add(measurement1);
    metrics.add(measurement2);

    detector = new LargeWaitQueueDetector(config);
    symptoms = detector.detect(metrics);

    assertEquals(0, symptoms.size());
  }
}