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20 package org.apache.hadoop.hbase.master;
21
22 import static org.junit.Assert.assertEquals;
23 import static org.junit.Assert.assertTrue;
24
25 import java.io.IOException;
26 import java.io.StringWriter;
27 import java.util.HashSet;
28 import java.util.List;
29 import java.util.NavigableMap;
30 import java.util.Set;
31 import java.util.regex.Matcher;
32 import java.util.regex.Pattern;
33
34 import org.apache.hadoop.conf.Configuration;
35 import org.apache.hadoop.hbase.HBaseConfiguration;
36 import org.apache.hadoop.hbase.HRegionInfo;
37 import org.apache.hadoop.hbase.HTableDescriptor;
38 import org.apache.hadoop.hbase.MediumTests;
39 import org.apache.hadoop.hbase.ServerName;
40 import org.apache.hadoop.hbase.client.HBaseAdmin;
41 import org.apache.hadoop.hbase.master.AssignmentManager.RegionState;
42 import org.apache.hadoop.hbase.tmpl.master.AssignmentManagerStatusTmpl;
43 import org.apache.hadoop.hbase.tmpl.master.MasterStatusTmpl;
44 import org.apache.hadoop.hbase.util.Bytes;
45 import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
46 import org.junit.Before;
47 import org.junit.Test;
48 import org.junit.experimental.categories.Category;
49 import org.mockito.Mockito;
50
51 import com.google.common.collect.Lists;
52 import com.google.common.collect.Maps;
53
54
55
56
57 @Category(MediumTests.class)
58 public class TestMasterStatusServlet {
59
60 private HMaster master;
61 private Configuration conf;
62 private HBaseAdmin admin;
63
64 static final ServerName FAKE_HOST =
65 new ServerName("fakehost", 12345, 1234567890);
66 static final HTableDescriptor FAKE_TABLE =
67 new HTableDescriptor("mytable");
68 static final HRegionInfo FAKE_HRI =
69 new HRegionInfo(FAKE_TABLE.getName(), Bytes.toBytes("a"), Bytes.toBytes("b"));
70
71 @Before
72 public void setupBasicMocks() {
73 conf = HBaseConfiguration.create();
74
75 master = Mockito.mock(HMaster.class);
76 Mockito.doReturn(FAKE_HOST).when(master).getServerName();
77 Mockito.doReturn(conf).when(master).getConfiguration();
78
79
80 ActiveMasterManager amm = Mockito.mock(ActiveMasterManager.class);
81 Mockito.doReturn(amm).when(master).getActiveMasterManager();
82 Mockito.doReturn(FAKE_HOST).when(amm).getActiveMaster();
83
84
85 ServerManager serverManager = Mockito.mock(ServerManager.class);
86 Mockito.doReturn(1.0).when(serverManager).getAverageLoad();
87 Mockito.doReturn(serverManager).when(master).getServerManager();
88
89
90 AssignmentManager am = Mockito.mock(AssignmentManager.class);
91 NavigableMap<String, RegionState> regionsInTransition =
92 Maps.newTreeMap();
93 regionsInTransition.put("r1",
94 new RegionState(FAKE_HRI, RegionState.State.CLOSING, 12345L, FAKE_HOST));
95 Mockito.doReturn(regionsInTransition).when(am).getRegionsInTransition();
96 Mockito.doReturn(am).when(master).getAssignmentManager();
97
98
99 ZooKeeperWatcher zkw = Mockito.mock(ZooKeeperWatcher.class);
100 Mockito.doReturn("fakequorum").when(zkw).getQuorum();
101 Mockito.doReturn(zkw).when(master).getZooKeeperWatcher();
102
103
104 admin = Mockito.mock(HBaseAdmin.class);
105 }
106
107
108 private void setupMockTables() throws IOException {
109 HTableDescriptor tables[] = new HTableDescriptor[] {
110 new HTableDescriptor("foo"),
111 new HTableDescriptor("bar")
112 };
113 Mockito.doReturn(tables).when(admin).listTables();
114 }
115
116 @Test
117 public void testStatusTemplateNoTables() throws IOException {
118 new MasterStatusTmpl().render(new StringWriter(),
119 master, admin);
120 }
121
122 @Test
123 public void testStatusTemplateRootAvailable() throws IOException {
124 new MasterStatusTmpl()
125 .setRootLocation(new ServerName("rootserver:123,12345"))
126 .render(new StringWriter(),
127 master, admin);
128 }
129
130 @Test
131 public void testStatusTemplateRootAndMetaAvailable() throws IOException {
132 setupMockTables();
133
134 new MasterStatusTmpl()
135 .setRootLocation(new ServerName("rootserver:123,12345"))
136 .setMetaLocation(new ServerName("metaserver:123,12345"))
137 .render(new StringWriter(),
138 master, admin);
139 }
140
141 @Test
142 public void testStatusTemplateWithServers() throws IOException {
143 setupMockTables();
144
145 List<ServerName> servers = Lists.newArrayList(
146 new ServerName("rootserver:123,12345"),
147 new ServerName("metaserver:123,12345"));
148 Set<ServerName> deadServers = new HashSet<ServerName>(
149 Lists.newArrayList(
150 new ServerName("badserver:123,12345"),
151 new ServerName("uglyserver:123,12345"))
152 );
153
154 new MasterStatusTmpl()
155 .setRootLocation(new ServerName("rootserver:123,12345"))
156 .setMetaLocation(new ServerName("metaserver:123,12345"))
157 .setServers(servers)
158 .setDeadServers(deadServers)
159 .render(new StringWriter(),
160 master, admin);
161 }
162
163 @Test
164 public void testAssignmentManagerTruncatedList() throws IOException {
165 AssignmentManager am = Mockito.mock(AssignmentManager.class);
166
167
168 NavigableMap<String, RegionState> regionsInTransition =
169 Maps.newTreeMap();
170 for (byte i = 0; i < 100; i++) {
171 HRegionInfo hri = new HRegionInfo(FAKE_TABLE.getName(),
172 new byte[]{i}, new byte[]{(byte) (i+1)});
173 regionsInTransition.put(hri.getEncodedName(),
174 new RegionState(hri, RegionState.State.CLOSING, 12345L, FAKE_HOST));
175 }
176
177 regionsInTransition.put(
178 HRegionInfo.FIRST_META_REGIONINFO.getEncodedName(),
179 new RegionState(HRegionInfo.FIRST_META_REGIONINFO,
180 RegionState.State.CLOSING, 12345L, FAKE_HOST));
181 Mockito.doReturn(regionsInTransition).when(am).getRegionsInTransition();
182
183
184 StringWriter sw = new StringWriter();
185 new AssignmentManagerStatusTmpl()
186 .setLimit(50)
187 .render(sw, am);
188 String result = sw.toString();
189
190
191 assertTrue(result.contains(HRegionInfo.FIRST_META_REGIONINFO.getEncodedName()));
192
193
194 Matcher matcher = Pattern.compile("CLOSING").matcher(result);
195 int count = 0;
196 while (matcher.find()) {
197 count++;
198 }
199 assertEquals(50, count);
200 }
201
202 @org.junit.Rule
203 public org.apache.hadoop.hbase.ResourceCheckerJUnitRule cu =
204 new org.apache.hadoop.hbase.ResourceCheckerJUnitRule();
205 }
206