/**
*
* 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 static org.junit.Assert.*;
import java.io.IOException;
import java.io.StringWriter;
import java.util.HashSet;
import java.util.List;
import java.util.NavigableMap;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.zookeeper.MasterAddressTracker;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
import org.apache.hadoop.hbase.regionserver.MetricsRegionServer;
import org.apache.hadoop.hbase.regionserver.MetricsRegionServerWrapperStub;
import org.apache.hadoop.hbase.tmpl.master.AssignmentManagerStatusTmpl;
import org.apache.hadoop.hbase.tmpl.master.MasterStatusTmpl;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.mockito.Mockito;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
/**
* Tests for the master status page and its template.
*/
@Category(MediumTests.class)
public class TestMasterStatusServlet {
private HMaster master;
private Configuration conf;
private HBaseAdmin admin;
static final ServerName FAKE_HOST =
ServerName.valueOf("fakehost", 12345, 1234567890);
static final HTableDescriptor FAKE_TABLE =
new HTableDescriptor(TableName.valueOf("mytable"));
static final HRegionInfo FAKE_HRI =
new HRegionInfo(FAKE_TABLE.getTableName(),
Bytes.toBytes("a"), Bytes.toBytes("b"));
@Before
public void setupBasicMocks() {
conf = HBaseConfiguration.create();
master = Mockito.mock(HMaster.class);
Mockito.doReturn(FAKE_HOST).when(master).getServerName();
Mockito.doReturn(conf).when(master).getConfiguration();
//Fake DeadServer
DeadServer deadServer = Mockito.mock(DeadServer.class);
// Fake serverManager
ServerManager serverManager = Mockito.mock(ServerManager.class);
Mockito.doReturn(1.0).when(serverManager).getAverageLoad();
Mockito.doReturn(serverManager).when(master).getServerManager();
Mockito.doReturn(deadServer).when(serverManager).getDeadServers();
// Fake AssignmentManager and RIT
AssignmentManager am = Mockito.mock(AssignmentManager.class);
RegionStates rs = Mockito.mock(RegionStates.class);
NavigableMap<String, RegionState> regionsInTransition =
Maps.newTreeMap();
regionsInTransition.put("r1",
new RegionState(FAKE_HRI, RegionState.State.CLOSING, 12345L, FAKE_HOST));
Mockito.doReturn(rs).when(am).getRegionStates();
Mockito.doReturn(regionsInTransition).when(rs).getRegionsInTransition();
Mockito.doReturn(am).when(master).getAssignmentManager();
Mockito.doReturn(serverManager).when(master).getServerManager();
// Fake ZKW
ZooKeeperWatcher zkw = Mockito.mock(ZooKeeperWatcher.class);
Mockito.doReturn("fakequorum").when(zkw).getQuorum();
Mockito.doReturn(zkw).when(master).getZooKeeper();
// Fake MasterAddressTracker
MasterAddressTracker tracker = Mockito.mock(MasterAddressTracker.class);
Mockito.doReturn(tracker).when(master).getMasterAddressTracker();
Mockito.doReturn(FAKE_HOST).when(tracker).getMasterAddress();
MetricsRegionServer rms = Mockito.mock(MetricsRegionServer.class);
Mockito.doReturn(new MetricsRegionServerWrapperStub()).when(rms).getRegionServerWrapper();
Mockito.doReturn(rms).when(master).getRegionServerMetrics();
// Mock admin
admin = Mockito.mock(HBaseAdmin.class);
}
private void setupMockTables() throws IOException {
HTableDescriptor tables[] = new HTableDescriptor[] {
new HTableDescriptor(TableName.valueOf("foo")),
new HTableDescriptor(TableName.valueOf("bar"))
};
Mockito.doReturn(tables).when(admin).listTables();
}
@Test
public void testStatusTemplateNoTables() throws IOException {
new MasterStatusTmpl().render(new StringWriter(), master);
}
@Test
public void testStatusTemplateMetaAvailable() throws IOException {
setupMockTables();
new MasterStatusTmpl()
.setMetaLocation(ServerName.valueOf("metaserver:123,12345"))
.render(new StringWriter(), master);
}
@Test
public void testStatusTemplateWithServers() throws IOException {
setupMockTables();
List<ServerName> servers = Lists.newArrayList(
ServerName.valueOf("rootserver:123,12345"),
ServerName.valueOf("metaserver:123,12345"));
Set<ServerName> deadServers = new HashSet<ServerName>(
Lists.newArrayList(
ServerName.valueOf("badserver:123,12345"),
ServerName.valueOf("uglyserver:123,12345"))
);
new MasterStatusTmpl()
.setMetaLocation(ServerName.valueOf("metaserver:123,12345"))
.setServers(servers)
.setDeadServers(deadServers)
.render(new StringWriter(), master);
}
@Test
public void testAssignmentManagerTruncatedList() throws IOException {
AssignmentManager am = Mockito.mock(AssignmentManager.class);
RegionStates rs = Mockito.mock(RegionStates.class);
// Add 100 regions as in-transition
NavigableMap<String, RegionState> regionsInTransition =
Maps.newTreeMap();
for (byte i = 0; i < 100; i++) {
HRegionInfo hri = new HRegionInfo(FAKE_TABLE.getTableName(),
new byte[]{i}, new byte[]{(byte) (i+1)});
regionsInTransition.put(hri.getEncodedName(),
new RegionState(hri, RegionState.State.CLOSING, 12345L, FAKE_HOST));
}
// Add hbase:meta in transition as well
regionsInTransition.put(
HRegionInfo.FIRST_META_REGIONINFO.getEncodedName(),
new RegionState(HRegionInfo.FIRST_META_REGIONINFO,
RegionState.State.CLOSING, 12345L, FAKE_HOST));
Mockito.doReturn(rs).when(am).getRegionStates();
Mockito.doReturn(regionsInTransition).when(rs).getRegionsInTransition();
// Render to a string
StringWriter sw = new StringWriter();
new AssignmentManagerStatusTmpl()
.setLimit(50)
.render(sw, am);
String result = sw.toString();
// Should always include META
assertTrue(result.contains(HRegionInfo.FIRST_META_REGIONINFO.getEncodedName()));
// Make sure we only see 50 of them
Matcher matcher = Pattern.compile("CLOSING").matcher(result);
int count = 0;
while (matcher.find()) {
count++;
}
assertEquals(50, count);
}
}