001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.master;
019
020import java.io.IOException;
021import java.io.StringWriter;
022import java.util.ArrayList;
023import java.util.HashSet;
024import java.util.List;
025import java.util.Set;
026import org.apache.hadoop.conf.Configuration;
027import org.apache.hadoop.hbase.HBaseClassTestRule;
028import org.apache.hadoop.hbase.HBaseConfiguration;
029import org.apache.hadoop.hbase.HRegionInfo;
030import org.apache.hadoop.hbase.HTableDescriptor;
031import org.apache.hadoop.hbase.ServerName;
032import org.apache.hadoop.hbase.TableName;
033import org.apache.hadoop.hbase.client.Admin;
034import org.apache.hadoop.hbase.master.assignment.AssignmentManager;
035import org.apache.hadoop.hbase.master.assignment.RegionStates;
036import org.apache.hadoop.hbase.regionserver.MetricsRegionServer;
037import org.apache.hadoop.hbase.regionserver.MetricsRegionServerWrapperStub;
038import org.apache.hadoop.hbase.testclassification.MasterTests;
039import org.apache.hadoop.hbase.testclassification.MediumTests;
040import org.apache.hadoop.hbase.tmpl.master.MasterStatusTmpl;
041import org.apache.hadoop.hbase.util.Bytes;
042import org.apache.hadoop.hbase.zookeeper.MasterAddressTracker;
043import org.apache.hadoop.hbase.zookeeper.ZKWatcher;
044import org.apache.hadoop.hbase.zookeeper.ZNodePaths;
045import org.junit.Before;
046import org.junit.ClassRule;
047import org.junit.Test;
048import org.junit.experimental.categories.Category;
049import org.mockito.Mockito;
050
051import org.apache.hbase.thirdparty.com.google.common.collect.Lists;
052
053/**
054 * Tests for the master status page and its template.
055 */
056@Category({MasterTests.class,MediumTests.class})
057public class TestMasterStatusServlet {
058
059  @ClassRule
060  public static final HBaseClassTestRule CLASS_RULE =
061      HBaseClassTestRule.forClass(TestMasterStatusServlet.class);
062
063  private HMaster master;
064  private Configuration conf;
065  private Admin admin;
066
067  static final ServerName FAKE_HOST =
068      ServerName.valueOf("fakehost", 12345, 1234567890);
069  static final HTableDescriptor FAKE_TABLE =
070    new HTableDescriptor(TableName.valueOf("mytable"));
071  static final HRegionInfo FAKE_HRI =
072      new HRegionInfo(FAKE_TABLE.getTableName(),
073          Bytes.toBytes("a"), Bytes.toBytes("b"));
074
075  @Before
076  public void setupBasicMocks() {
077    conf = HBaseConfiguration.create();
078
079    master = Mockito.mock(HMaster.class);
080    Mockito.doReturn(FAKE_HOST).when(master).getServerName();
081    Mockito.doReturn(conf).when(master).getConfiguration();
082
083    //Fake DeadServer
084    DeadServer deadServer = Mockito.mock(DeadServer.class);
085    // Fake serverManager
086    ServerManager serverManager = Mockito.mock(ServerManager.class);
087    Mockito.doReturn(1.0).when(serverManager).getAverageLoad();
088    Mockito.doReturn(serverManager).when(master).getServerManager();
089    Mockito.doReturn(deadServer).when(serverManager).getDeadServers();
090
091    // Fake AssignmentManager and RIT
092    AssignmentManager am = Mockito.mock(AssignmentManager.class);
093    RegionStates rs = Mockito.mock(RegionStates.class);
094    List<RegionState> regionsInTransition = new ArrayList<>();
095    regionsInTransition.add(new RegionState(FAKE_HRI, RegionState.State.CLOSING, 12345L, FAKE_HOST));
096    Mockito.doReturn(rs).when(am).getRegionStates();
097    Mockito.doReturn(regionsInTransition).when(rs).getRegionsInTransition();
098    Mockito.doReturn(am).when(master).getAssignmentManager();
099    Mockito.doReturn(serverManager).when(master).getServerManager();
100
101    // Fake ZKW
102    ZKWatcher zkw = Mockito.mock(ZKWatcher.class);
103    Mockito.doReturn(new ZNodePaths(conf)).when(zkw).getZNodePaths();
104    Mockito.doReturn("fakequorum").when(zkw).getQuorum();
105    Mockito.doReturn(zkw).when(master).getZooKeeper();
106
107    // Fake MasterAddressTracker
108    MasterAddressTracker tracker = Mockito.mock(MasterAddressTracker.class);
109    Mockito.doReturn(tracker).when(master).getMasterAddressTracker();
110    Mockito.doReturn(FAKE_HOST).when(tracker).getMasterAddress();
111
112    MetricsRegionServer rms = Mockito.mock(MetricsRegionServer.class);
113    Mockito.doReturn(new MetricsRegionServerWrapperStub()).when(rms).getRegionServerWrapper();
114    Mockito.doReturn(rms).when(master).getRegionServerMetrics();
115
116    // Mock admin
117    admin = Mockito.mock(Admin.class);
118  }
119
120  private void setupMockTables() throws IOException {
121    HTableDescriptor tables[] = new HTableDescriptor[] {
122        new HTableDescriptor(TableName.valueOf("foo")),
123        new HTableDescriptor(TableName.valueOf("bar"))
124    };
125    Mockito.doReturn(tables).when(admin).listTables();
126  }
127
128  @Test
129  public void testStatusTemplateNoTables() throws IOException {
130    new MasterStatusTmpl().render(new StringWriter(), master);
131  }
132
133  @Test
134  public void testStatusTemplateMetaAvailable() throws IOException {
135    setupMockTables();
136
137    new MasterStatusTmpl()
138      .setMetaLocation(ServerName.valueOf("metaserver,123,12345"))
139      .render(new StringWriter(), master);
140  }
141
142  @Test
143  public void testStatusTemplateWithServers() throws IOException {
144    setupMockTables();
145
146    List<ServerName> servers = Lists.newArrayList(
147        ServerName.valueOf("rootserver,123,12345"),
148        ServerName.valueOf("metaserver,123,12345"));
149    Set<ServerName> deadServers = new HashSet<>(
150        Lists.newArrayList(
151            ServerName.valueOf("badserver,123,12345"),
152            ServerName.valueOf("uglyserver,123,12345"))
153    );
154
155    new MasterStatusTmpl()
156      .setMetaLocation(ServerName.valueOf("metaserver,123,12345"))
157      .setServers(servers)
158      .setDeadServers(deadServers)
159      .render(new StringWriter(), master);
160  }
161}