/**
* 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.hadoop.hbase.master;
import org.apache.hadoop.hbase.MediumTests;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
import org.apache.hadoop.hbase.util.ManualEnvironmentEdge;
import org.apache.hadoop.hbase.util.Pair;
import org.junit.Assert;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import java.util.List;
import java.util.Set;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
@Category(MediumTests.class)
public class TestDeadServer {
final ServerName hostname123 = new ServerName("127.0.0.1", 123, 3L);
final ServerName hostname123_2 = new ServerName("127.0.0.1", 123, 4L);
final ServerName hostname1234 = new ServerName("127.0.0.2", 1234, 4L);
final ServerName hostname12345 = new ServerName("127.0.0.2", 12345, 4L);
@Test public void testIsDead() {
DeadServer ds = new DeadServer();
ds.add(hostname123);
assertTrue(ds.areDeadServersInProgress());
ds.finish(hostname123);
assertFalse(ds.areDeadServersInProgress());
ds.add(hostname1234);
assertTrue(ds.areDeadServersInProgress());
ds.finish(hostname1234);
assertFalse(ds.areDeadServersInProgress());
ds.add(hostname12345);
assertTrue(ds.areDeadServersInProgress());
ds.finish(hostname12345);
assertFalse(ds.areDeadServersInProgress());
// Already dead = 127.0.0.1,9090,112321
// Coming back alive = 127.0.0.1,9090,223341
final ServerName deadServer = new ServerName("127.0.0.1", 9090, 112321L);
assertFalse(ds.cleanPreviousInstance(deadServer));
ds.add(deadServer);
assertTrue(ds.isDeadServer(deadServer));
Set<ServerName> deadServerNames = ds.copyServerNames();
for (ServerName eachDeadServer : deadServerNames) {
Assert.assertNotNull(ds.getTimeOfDeath(eachDeadServer));
}
final ServerName deadServerHostComingAlive =
new ServerName("127.0.0.1", 9090, 223341L);
assertTrue(ds.cleanPreviousInstance(deadServerHostComingAlive));
assertFalse(ds.isDeadServer(deadServer));
assertFalse(ds.cleanPreviousInstance(deadServerHostComingAlive));
}
@Test
public void testSortExtract(){
ManualEnvironmentEdge mee = new ManualEnvironmentEdge();
EnvironmentEdgeManager.injectEdge(mee);
mee.setValue(1);
DeadServer d = new DeadServer();
d.add(hostname123);
mee.incValue(1);
d.add(hostname1234);
mee.incValue(1);
d.add(hostname12345);
List<Pair<ServerName, Long>> copy = d.copyDeadServersSince(2L);
Assert.assertEquals(2, copy.size());
Assert.assertEquals(hostname1234, copy.get(0).getFirst());
Assert.assertEquals(new Long(2L), copy.get(0).getSecond());
Assert.assertEquals(hostname12345, copy.get(1).getFirst());
Assert.assertEquals(new Long(3L), copy.get(1).getSecond());
EnvironmentEdgeManager.reset();
}
@Test
public void testClean(){
DeadServer d = new DeadServer();
d.add(hostname123);
d.cleanPreviousInstance(hostname12345);
Assert.assertFalse(d.isEmpty());
d.cleanPreviousInstance(hostname1234);
Assert.assertFalse(d.isEmpty());
d.cleanPreviousInstance(hostname123_2);
Assert.assertTrue(d.isEmpty());
}
}