| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * 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 |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.heron.healthmgr.diagnosers; |
| |
| import java.io.IOException; |
| import java.time.Instant; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| import com.microsoft.dhalion.api.IDiagnoser; |
| import com.microsoft.dhalion.core.Diagnosis; |
| import com.microsoft.dhalion.core.Measurement; |
| import com.microsoft.dhalion.core.MeasurementsTable; |
| import com.microsoft.dhalion.core.Symptom; |
| import com.microsoft.dhalion.policy.PoliciesExecutor.ExecutionContext; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import org.apache.heron.healthmgr.HealthManagerMetrics; |
| import org.apache.heron.healthmgr.sensors.BaseSensor; |
| |
| import static org.apache.heron.healthmgr.detectors.BaseDetector.SymptomType.SYMPTOM_COMP_BACK_PRESSURE; |
| import static org.apache.heron.healthmgr.detectors.BaseDetector.SymptomType.SYMPTOM_PROCESSING_RATE_SKEW; |
| import static org.apache.heron.healthmgr.detectors.BaseDetector.SymptomType.SYMPTOM_WAIT_Q_SIZE_SKEW; |
| import static org.apache.heron.healthmgr.diagnosers.BaseDiagnoser.DiagnosisType.DIAGNOSIS_SLOW_INSTANCE; |
| import static org.apache.heron.healthmgr.sensors.BaseSensor.MetricName.METRIC_BACK_PRESSURE; |
| 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 SlowInstanceDiagnoserTest { |
| private final String comp = "comp"; |
| private IDiagnoser diagnoser; |
| private Instant now = Instant.now(); |
| private Collection<Measurement> measurements = new ArrayList<>(); |
| private ExecutionContext context; |
| |
| @Before |
| public void initTestData() throws IOException { |
| now = Instant.now(); |
| measurements = new ArrayList<>(); |
| |
| context = mock(ExecutionContext.class); |
| when(context.checkpoint()).thenReturn(now); |
| |
| HealthManagerMetrics publishingMetrics = mock(HealthManagerMetrics.class); |
| diagnoser = new SlowInstanceDiagnoser(publishingMetrics); |
| diagnoser.initialize(context); |
| } |
| |
| @Test |
| public void failsIfNoBufferSizeDisparity() { |
| Symptom symptom = new Symptom(SYMPTOM_COMP_BACK_PRESSURE.text(), Instant.now(), null); |
| Collection<Symptom> symptoms = Collections.singletonList(symptom); |
| |
| Collection<Diagnosis> result = diagnoser.diagnose(symptoms); |
| assertEquals(0, result.size()); |
| } |
| |
| @Test |
| public void diagnosis1of3SlowInstances() { |
| addMeasurements(METRIC_BACK_PRESSURE, 123, 0, 0); |
| addMeasurements(METRIC_WAIT_Q_SIZE, 1000, 20, 20); |
| when(context.measurements()).thenReturn(MeasurementsTable.of(measurements)); |
| |
| Collection<String> assign = Collections.singleton(comp); |
| Symptom bpSymptom = new Symptom(SYMPTOM_COMP_BACK_PRESSURE.text(), now, assign); |
| Symptom qDisparitySymptom = new Symptom(SYMPTOM_WAIT_Q_SIZE_SKEW.text(), now, assign); |
| Collection<Symptom> symptoms = Arrays.asList(bpSymptom, qDisparitySymptom); |
| |
| Collection<Diagnosis> result = diagnoser.diagnose(symptoms); |
| |
| assertEquals(1, result.size()); |
| Diagnosis diagnoses = result.iterator().next(); |
| assertEquals(DIAGNOSIS_SLOW_INSTANCE.text(), diagnoses.type()); |
| assertEquals(1, diagnoses.assignments().size()); |
| assertEquals("i1", diagnoses.assignments().iterator().next()); |
| // TODO |
| // assertEquals(1, diagnoses.symptoms().size()); |
| } |
| |
| @Test |
| public void failIfInstanceWithBpHasSmallBuffer() { |
| Collection<String> assign = Collections.singleton(comp); |
| Symptom bpSymptom = new Symptom(SYMPTOM_COMP_BACK_PRESSURE.text(), now, assign); |
| Symptom qDisparitySymptom = new Symptom(SYMPTOM_WAIT_Q_SIZE_SKEW.text(), now, assign); |
| Symptom exeDisparitySymptom = new Symptom(SYMPTOM_PROCESSING_RATE_SKEW.text(), now, assign); |
| Collection<Symptom> symptoms = Arrays.asList(bpSymptom, qDisparitySymptom, exeDisparitySymptom); |
| |
| Collection<Diagnosis> result = diagnoser.diagnose(symptoms); |
| assertEquals(0, result.size()); |
| } |
| |
| private void addMeasurements(BaseSensor.MetricName metricExeCount, int i1, int i2, int i3) { |
| measurements.add(new Measurement(comp, "i1", metricExeCount.text(), now, i1)); |
| measurements.add(new Measurement(comp, "i2", metricExeCount.text(), now, i2)); |
| measurements.add(new Measurement(comp, "i3", metricExeCount.text(), now, i3)); |
| } |
| } |