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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
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*
* 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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package org.apache.brooklyn.entity.nosql.cassandra;
import static org.testng.Assert.assertEquals;
import java.util.Collection;
import java.util.Set;
import org.apache.brooklyn.api.entity.Entity;
import org.apache.brooklyn.api.entity.EntityLocal;
import org.apache.brooklyn.api.entity.EntitySpec;
import org.apache.brooklyn.api.entity.ImplementedBy;
import org.apache.brooklyn.api.location.Location;
import org.apache.brooklyn.api.location.LocationSpec;
import org.apache.brooklyn.core.entity.AbstractEntity;
import org.apache.brooklyn.core.entity.Attributes;
import org.apache.brooklyn.core.entity.EntityInternal;
import org.apache.brooklyn.core.entity.lifecycle.Lifecycle;
import org.apache.brooklyn.core.entity.lifecycle.ServiceStateLogic;
import org.apache.brooklyn.core.entity.trait.Startable;
import org.apache.brooklyn.core.test.BrooklynAppUnitTestSupport;
import org.apache.brooklyn.entity.software.base.EmptySoftwareProcess;
import org.apache.brooklyn.test.EntityTestUtils;
import org.apache.brooklyn.util.time.Duration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import org.apache.brooklyn.location.localhost.LocalhostMachineProvisioningLocation;
import com.google.common.base.Predicate;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
public class CassandraFabricTest extends BrooklynAppUnitTestSupport {
private static final Logger log = LoggerFactory.getLogger(CassandraFabricTest.class);
private LocalhostMachineProvisioningLocation loc1;
private LocalhostMachineProvisioningLocation loc2;
private CassandraFabric fabric;
@BeforeMethod(alwaysRun=true)
@Override
public void setUp() throws Exception {
super.setUp();
loc1 = mgmt.getLocationManager().createLocation(LocationSpec.create(LocalhostMachineProvisioningLocation.class));
loc2 = mgmt.getLocationManager().createLocation(LocationSpec.create(LocalhostMachineProvisioningLocation.class));
}
@Test
public void testPopulatesInitialSeeds() throws Exception {
fabric = app.createAndManageChild(EntitySpec.create(CassandraFabric.class)
.configure(CassandraFabric.INITIAL_QUORUM_SIZE, 2)
.configure(CassandraDatacenter.DELAY_BEFORE_ADVERTISING_CLUSTER, Duration.ZERO)
.configure(CassandraFabric.MEMBER_SPEC, EntitySpec.create(CassandraDatacenter.class)
.configure(CassandraDatacenter.INITIAL_SIZE, 2)
.configure(CassandraDatacenter.MEMBER_SPEC, EntitySpec.create(EmptySoftwareProcess.class))));
app.start(ImmutableList.of(loc1, loc2));
CassandraDatacenter d1 = (CassandraDatacenter) Iterables.get(fabric.getMembers(), 0);
CassandraDatacenter d2 = (CassandraDatacenter) Iterables.get(fabric.getMembers(), 1);
final EmptySoftwareProcess d1a = (EmptySoftwareProcess) Iterables.get(d1.getMembers(), 0);
final EmptySoftwareProcess d1b = (EmptySoftwareProcess) Iterables.get(d1.getMembers(), 1);
final EmptySoftwareProcess d2a = (EmptySoftwareProcess) Iterables.get(d2.getMembers(), 0);
final EmptySoftwareProcess d2b = (EmptySoftwareProcess) Iterables.get(d2.getMembers(), 1);
Predicate<Set<Entity>> predicate = new Predicate<Set<Entity>>() {
@Override public boolean apply(Set<Entity> input) {
return input != null && input.size() >= 2 &&
Sets.intersection(input, ImmutableSet.of(d1a, d1b)).size() == 1 &&
Sets.intersection(input, ImmutableSet.of(d2a, d2b)).size() == 1;
}
};
EntityTestUtils.assertAttributeEventually(fabric, CassandraFabric.CURRENT_SEEDS, predicate);
EntityTestUtils.assertAttributeEventually(d1, CassandraDatacenter.CURRENT_SEEDS, predicate);
EntityTestUtils.assertAttributeEventually(d2, CassandraDatacenter.CURRENT_SEEDS, predicate);
Set<Entity> seeds = fabric.getAttribute(CassandraFabric.CURRENT_SEEDS);
assertEquals(d1.getAttribute(CassandraDatacenter.CURRENT_SEEDS), seeds);
assertEquals(d2.getAttribute(CassandraDatacenter.CURRENT_SEEDS), seeds);
log.info("Seeds="+seeds);
}
@Test
public void testPopulatesInitialSeedsWhenNodesOfOneClusterComeUpBeforeTheOtherCluster() throws Exception {
fabric = app.createAndManageChild(EntitySpec.create(CassandraFabric.class)
.configure(CassandraFabric.INITIAL_QUORUM_SIZE, 2)
.configure(CassandraDatacenter.DELAY_BEFORE_ADVERTISING_CLUSTER, Duration.ZERO)
.configure(CassandraFabric.MEMBER_SPEC, EntitySpec.create(CassandraDatacenter.class)
.configure(CassandraDatacenter.INITIAL_SIZE, 2)
.configure(CassandraDatacenter.MEMBER_SPEC, EntitySpec.create(DummyCassandraNode.class))));
Thread t = new Thread() {
public void run() {
app.start(ImmutableList.of(loc1, loc2));
}
};
t.start();
try {
EntityTestUtils.assertGroupSizeEqualsEventually(fabric, 2);
CassandraDatacenter d1 = (CassandraDatacenter) Iterables.get(fabric.getMembers(), 0);
CassandraDatacenter d2 = (CassandraDatacenter) Iterables.get(fabric.getMembers(), 1);
EntityTestUtils.assertGroupSizeEqualsEventually(d1, 2);
final DummyCassandraNode d1a = (DummyCassandraNode) Iterables.get(d1.getMembers(), 0);
final DummyCassandraNode d1b = (DummyCassandraNode) Iterables.get(d1.getMembers(), 1);
EntityTestUtils.assertGroupSizeEqualsEventually(d2, 2);
final DummyCassandraNode d2a = (DummyCassandraNode) Iterables.get(d2.getMembers(), 0);
final DummyCassandraNode d2b = (DummyCassandraNode) Iterables.get(d2.getMembers(), 1);
d1a.sensors().set(Attributes.HOSTNAME, "d1a");
d1b.sensors().set(Attributes.HOSTNAME, "d1b");
Thread.sleep(1000);
d2a.sensors().set(Attributes.HOSTNAME, "d2a");
d2b.sensors().set(Attributes.HOSTNAME, "d2b");
Predicate<Set<Entity>> predicate = new Predicate<Set<Entity>>() {
@Override public boolean apply(Set<Entity> input) {
return input != null && input.size() >= 2 &&
Sets.intersection(input, ImmutableSet.of(d1a, d1b)).size() == 1 &&
Sets.intersection(input, ImmutableSet.of(d2a, d2b)).size() == 1;
}
};
EntityTestUtils.assertAttributeEventually(fabric, CassandraFabric.CURRENT_SEEDS, predicate);
EntityTestUtils.assertAttributeEventually(d1, CassandraDatacenter.CURRENT_SEEDS, predicate);
EntityTestUtils.assertAttributeEventually(d2, CassandraDatacenter.CURRENT_SEEDS, predicate);
Set<Entity> seeds = fabric.getAttribute(CassandraFabric.CURRENT_SEEDS);
assertEquals(d1.getAttribute(CassandraDatacenter.CURRENT_SEEDS), seeds);
assertEquals(d2.getAttribute(CassandraDatacenter.CURRENT_SEEDS), seeds);
log.info("Seeds="+seeds);
} finally {
log.info("Failed seeds; fabric="+fabric.getAttribute(CassandraFabric.CURRENT_SEEDS));
t.interrupt();
}
}
@ImplementedBy(DummyCassandraNodeImpl.class)
public interface DummyCassandraNode extends Entity, Startable, EntityLocal, EntityInternal {
}
public static class DummyCassandraNodeImpl extends AbstractEntity implements DummyCassandraNode {
@Override
public void start(Collection<? extends Location> locations) {
ServiceStateLogic.setExpectedState(this, Lifecycle.STARTING);
}
@Override
public void stop() {
ServiceStateLogic.setExpectedState(this, Lifecycle.STOPPING);
}
@Override
public void restart() {
}
}
}