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19 package org.apache.hadoop.hbase.coprocessor;
20
21 import static org.junit.Assert.assertEquals;
22 import static org.junit.Assert.assertTrue;
23
24 import java.io.IOException;
25 import java.util.Collections;
26 import java.util.concurrent.ExecutorService;
27 import java.util.concurrent.SynchronousQueue;
28 import java.util.concurrent.ThreadPoolExecutor;
29 import java.util.concurrent.TimeUnit;
30
31 import org.apache.hadoop.hbase.HBaseTestingUtility;
32 import org.apache.hadoop.hbase.HColumnDescriptor;
33 import org.apache.hadoop.hbase.HTableDescriptor;
34 import org.apache.hadoop.hbase.testclassification.MediumTests;
35 import org.apache.hadoop.hbase.TableName;
36 import org.apache.hadoop.hbase.client.Durability;
37 import org.apache.hadoop.hbase.client.HBaseAdmin;
38 import org.apache.hadoop.hbase.client.HTable;
39 import org.apache.hadoop.hbase.client.HTableInterface;
40 import org.apache.hadoop.hbase.client.Put;
41 import org.apache.hadoop.hbase.client.Result;
42 import org.apache.hadoop.hbase.client.ResultScanner;
43 import org.apache.hadoop.hbase.client.Scan;
44 import org.apache.hadoop.hbase.regionserver.wal.WALEdit;
45 import org.apache.hadoop.hbase.util.Threads;
46 import org.junit.After;
47 import org.junit.AfterClass;
48 import org.junit.BeforeClass;
49 import org.junit.Test;
50 import org.junit.experimental.categories.Category;
51
52
53
54
55 @Category(MediumTests.class)
56 public class TestOpenTableInCoprocessor {
57
58 private static final TableName otherTable = TableName.valueOf("otherTable");
59 private static final TableName primaryTable = TableName.valueOf("primary");
60 private static final byte[] family = new byte[] { 'f' };
61
62 private static boolean[] completed = new boolean[1];
63
64
65
66 public static class SendToOtherTableCoprocessor extends BaseRegionObserver {
67
68 @Override
69 public void prePut(final ObserverContext<RegionCoprocessorEnvironment> e, final Put put,
70 final WALEdit edit, final Durability durability) throws IOException {
71 HTableInterface table = e.getEnvironment().getTable(otherTable);
72 table.put(put);
73 table.flushCommits();
74 completed[0] = true;
75 table.close();
76 }
77
78 }
79
80 private static boolean[] completedWithPool = new boolean[1];
81
82
83
84 public static class CustomThreadPoolCoprocessor extends BaseRegionObserver {
85
86
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89
90
91 private ExecutorService getPool() {
92 int maxThreads = 1;
93 long keepAliveTime = 60;
94 ThreadPoolExecutor pool =
95 new ThreadPoolExecutor(1, maxThreads, keepAliveTime, TimeUnit.SECONDS,
96 new SynchronousQueue<Runnable>(), Threads.newDaemonThreadFactory("hbase-table"));
97 pool.allowCoreThreadTimeOut(true);
98 return pool;
99 }
100
101 @Override
102 public void prePut(final ObserverContext<RegionCoprocessorEnvironment> e, final Put put,
103 final WALEdit edit, final Durability durability) throws IOException {
104 HTableInterface table = e.getEnvironment().getTable(otherTable, getPool());
105 Put p = new Put(new byte[] { 'a' });
106 p.add(family, null, new byte[] { 'a' });
107 try {
108 table.batch(Collections.singletonList(put));
109 } catch (InterruptedException e1) {
110 throw new IOException(e1);
111 }
112 completedWithPool[0] = true;
113 table.close();
114 }
115 }
116
117 private static HBaseTestingUtility UTIL = new HBaseTestingUtility();
118
119 @BeforeClass
120 public static void setupCluster() throws Exception {
121 UTIL.startMiniCluster();
122 }
123
124 @After
125 public void cleanupTestTable() throws Exception {
126 UTIL.getHBaseAdmin().disableTable(primaryTable);
127 UTIL.getHBaseAdmin().deleteTable(primaryTable);
128
129 UTIL.getHBaseAdmin().disableTable(otherTable);
130 UTIL.getHBaseAdmin().deleteTable(otherTable);
131
132 }
133
134 @AfterClass
135 public static void teardownCluster() throws Exception {
136 UTIL.shutdownMiniCluster();
137 }
138
139 @Test
140 public void testCoprocessorCanCreateConnectionToRemoteTable() throws Throwable {
141 runCoprocessorConnectionToRemoteTable(SendToOtherTableCoprocessor.class, completed);
142 }
143
144 @Test
145 public void testCoprocessorCanCreateConnectionToRemoteTableWithCustomPool() throws Throwable {
146 runCoprocessorConnectionToRemoteTable(CustomThreadPoolCoprocessor.class, completedWithPool);
147 }
148
149 private void runCoprocessorConnectionToRemoteTable(Class<? extends BaseRegionObserver> clazz,
150 boolean[] completeCheck) throws Throwable {
151 HTableDescriptor primary = new HTableDescriptor(primaryTable);
152 primary.addFamily(new HColumnDescriptor(family));
153
154 primary.addCoprocessor(clazz.getName());
155
156 HTableDescriptor other = new HTableDescriptor(otherTable);
157 other.addFamily(new HColumnDescriptor(family));
158
159
160 HBaseAdmin admin = UTIL.getHBaseAdmin();
161 admin.createTable(primary);
162 admin.createTable(other);
163
164 HTable table = new HTable(UTIL.getConfiguration(), "primary");
165 Put p = new Put(new byte[] { 'a' });
166 p.add(family, null, new byte[] { 'a' });
167 table.put(p);
168 table.flushCommits();
169 table.close();
170
171 HTable target = new HTable(UTIL.getConfiguration(), otherTable);
172 assertTrue("Didn't complete update to target table!", completeCheck[0]);
173 assertEquals("Didn't find inserted row", 1, getKeyValueCount(target));
174 target.close();
175 }
176
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182
183 private int getKeyValueCount(HTable table) throws IOException {
184 Scan scan = new Scan();
185 scan.setMaxVersions(Integer.MAX_VALUE - 1);
186
187 ResultScanner results = table.getScanner(scan);
188 int count = 0;
189 for (Result res : results) {
190 count += res.listCells().size();
191 System.out.println(count + ") " + res);
192 }
193 results.close();
194
195 return count;
196 }
197 }