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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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* KIND, either express or implied. See the License for the
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package org.apache.brooklyn.entity.group.zoneaware;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.assertTrue;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.brooklyn.api.entity.EntitySpec;
import org.apache.brooklyn.api.location.LocationSpec;
import org.apache.brooklyn.core.location.SimulatedLocation;
import org.apache.brooklyn.core.test.BrooklynAppUnitTestSupport;
import org.apache.brooklyn.core.test.entity.TestEntity;
import org.apache.brooklyn.entity.group.zoneaware.ProportionalZoneFailureDetector;
import org.apache.brooklyn.util.time.Duration;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import com.google.common.base.Ticker;
public class ProportionalZoneFailureDetectorTest extends BrooklynAppUnitTestSupport {
private TestEntity entity1;
private SimulatedLocation loc1;
private SimulatedLocation loc2;
@BeforeMethod(alwaysRun=true)
@Override
public void setUp() throws Exception {
super.setUp();
loc1 = mgmt.getLocationManager().createLocation(LocationSpec.create(SimulatedLocation.class));
loc2 = mgmt.getLocationManager().createLocation(LocationSpec.create(SimulatedLocation.class));
entity1 = app.createAndManageChild(EntitySpec.create(TestEntity.class));
}
@Test
public void testRespectsMin() throws Exception {
ProportionalZoneFailureDetector detector = new ProportionalZoneFailureDetector(2, Duration.ONE_HOUR, 0.9);
detector.onStartupFailure(loc1, entity1, new Throwable("simulated failure"));
assertFalse(detector.hasFailed(loc1));
assertFalse(detector.hasFailed(loc2));
detector.onStartupFailure(loc1, entity1, new Throwable("simulated failure"));
assertTrue(detector.hasFailed(loc1));
assertFalse(detector.hasFailed(loc2));
}
@Test
public void testRespectsProportion() throws Exception {
ProportionalZoneFailureDetector detector = new ProportionalZoneFailureDetector(2, Duration.ONE_HOUR, 0.9);
for (int i = 0; i < 9; i++) {
detector.onStartupFailure(loc1, entity1, new Throwable("simulated failure"));
}
assertTrue(detector.hasFailed(loc1));
detector.onStartupSuccess(loc1, entity1);
assertTrue(detector.hasFailed(loc1));
detector.onStartupSuccess(loc1, entity1);
assertFalse(detector.hasFailed(loc1));
}
@Test
public void testRespectsTime() throws Exception {
final long startTime = System.nanoTime();
final AtomicLong currentTime = new AtomicLong(startTime);
Ticker ticker = new Ticker() {
@Override public long read() {
return currentTime.get();
}
};
ProportionalZoneFailureDetector detector = new ProportionalZoneFailureDetector(2, Duration.ONE_HOUR, 0.9, ticker);
for (int i = 0; i < 2; i++) {
detector.onStartupFailure(loc1, entity1, new Throwable("simulated failure"));
}
assertTrue(detector.hasFailed(loc1));
currentTime.set(startTime + TimeUnit.MILLISECONDS.toNanos(1000*60*60 - 1));
assertTrue(detector.hasFailed(loc1));
currentTime.set(startTime + TimeUnit.MILLISECONDS.toNanos(1000*60*60 + 1));
assertFalse(detector.hasFailed(loc1));
}
@Test
public void testSeparatelyTracksLocations() throws Exception {
ProportionalZoneFailureDetector detector = new ProportionalZoneFailureDetector(2, Duration.ONE_HOUR, 0.9);
for (int i = 0; i < 2; i++) {
detector.onStartupFailure(loc1, entity1, new Throwable("simulated failure"));
}
for (int i = 0; i < 2; i++) {
detector.onStartupFailure(loc2, entity1, new Throwable("simulated failure"));
}
assertTrue(detector.hasFailed(loc1));
assertTrue(detector.hasFailed(loc2));
detector.onStartupSuccess(loc1, entity1);
assertFalse(detector.hasFailed(loc1));
assertTrue(detector.hasFailed(loc2));
}
}