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18 package org.apache.hadoop.hbase.coprocessor;
19
20 import static org.junit.Assert.assertEquals;
21 import static org.junit.Assert.assertTrue;
22
23 import java.io.IOException;
24 import java.util.Collections;
25 import java.util.concurrent.ExecutorService;
26 import java.util.concurrent.SynchronousQueue;
27 import java.util.concurrent.ThreadPoolExecutor;
28 import java.util.concurrent.TimeUnit;
29
30 import org.apache.hadoop.hbase.HBaseTestingUtility;
31 import org.apache.hadoop.hbase.HColumnDescriptor;
32 import org.apache.hadoop.hbase.HTableDescriptor;
33 import org.apache.hadoop.hbase.MediumTests;
34 import org.apache.hadoop.hbase.client.HBaseAdmin;
35 import org.apache.hadoop.hbase.client.HTable;
36 import org.apache.hadoop.hbase.client.HTableInterface;
37 import org.apache.hadoop.hbase.client.Put;
38 import org.apache.hadoop.hbase.client.Result;
39 import org.apache.hadoop.hbase.client.ResultScanner;
40 import org.apache.hadoop.hbase.client.Scan;
41 import org.apache.hadoop.hbase.regionserver.wal.WALEdit;
42 import org.apache.hadoop.hbase.util.Bytes;
43 import org.apache.hadoop.hbase.util.Threads;
44 import org.junit.After;
45 import org.junit.AfterClass;
46 import org.junit.BeforeClass;
47 import org.junit.Test;
48 import org.junit.experimental.categories.Category;
49
50
51
52
53 @Category(MediumTests.class)
54 public class TestOpenTableInCoprocessor {
55
56 private static final byte[] otherTable = Bytes.toBytes("otherTable");
57 private static final byte[] primaryTable = Bytes.toBytes("primary");
58 private static final byte[] family = new byte[] { 'f' };
59
60 private static boolean [] completed = new boolean[1];
61
62
63
64
65 public static class SendToOtherTableCoprocessor extends BaseRegionObserver {
66
67 @Override
68 public void prePut(ObserverContext<RegionCoprocessorEnvironment> e, Put put, WALEdit edit,
69 boolean writeToWAL) throws IOException {
70 HTableInterface table = e.getEnvironment().getTable(otherTable);
71 Put p = new Put(new byte[] { 'a' });
72 p.add(family, null, new byte[] { 'a' });
73 table.put(put);
74 table.flushCommits();
75 completed[0] = true;
76 table.close();
77 }
78
79 }
80
81 private static boolean [] completedWithPool = new boolean [1] ;
82
83 public static class CustomThreadPoolCoprocessor extends BaseRegionObserver {
84
85
86
87
88
89
90 private ExecutorService getPool() {
91 int maxThreads = 1;
92 long keepAliveTime = 60;
93 ThreadPoolExecutor pool = new ThreadPoolExecutor(1, maxThreads, keepAliveTime,
94 TimeUnit.SECONDS, new SynchronousQueue<Runnable>(),
95 Threads.newDaemonThreadFactory("hbase-table"));
96 pool.allowCoreThreadTimeOut(true);
97 return pool;
98 }
99
100 @Override
101 public void prePut(ObserverContext<RegionCoprocessorEnvironment> e, Put put, WALEdit edit,
102 boolean writeToWAL) throws IOException {
103 HTableInterface table = e.getEnvironment().getTable(otherTable, getPool());
104 Put p = new Put(new byte[] { 'a' });
105 p.add(family, null, new byte[] { 'a' });
106 try {
107 table.batch(Collections.singletonList(put));
108 } catch (InterruptedException e1) {
109 throw new IOException(e1);
110 }
111 completedWithPool[0] = true;
112 table.close();
113 }
114 }
115
116 private static HBaseTestingUtility UTIL = new HBaseTestingUtility();
117
118 @BeforeClass
119 public static void setupCluster() throws Exception {
120 UTIL.startMiniCluster();
121 }
122
123 @After
124 public void cleanupTestTable() throws Exception {
125 UTIL.getHBaseAdmin().disableTable(primaryTable);
126 UTIL.getHBaseAdmin().deleteTable(primaryTable);
127
128 UTIL.getHBaseAdmin().disableTable(otherTable);
129 UTIL.getHBaseAdmin().deleteTable(otherTable);
130
131 }
132
133 @AfterClass
134 public static void teardownCluster() throws Exception{
135 UTIL.shutdownMiniCluster();
136 }
137
138 @Test
139 public void testCoprocessorCanCreateConnectionToRemoteTable() throws Throwable {
140 runCoprocessorConnectionToRemoteTable(SendToOtherTableCoprocessor.class, completed);
141 }
142
143 @Test
144 public void testCoprocessorCanCreateConnectionToRemoteTableWithCustomPool() throws Throwable {
145 runCoprocessorConnectionToRemoteTable(CustomThreadPoolCoprocessor.class, completedWithPool);
146 }
147
148 private void runCoprocessorConnectionToRemoteTable(Class<? extends BaseRegionObserver> clazz,
149 boolean[] completeCheck) throws Throwable {
150 HTableDescriptor primary = new HTableDescriptor(primaryTable);
151 primary.addFamily(new HColumnDescriptor(family));
152
153 primary.addCoprocessor(clazz.getName());
154
155 HTableDescriptor other = new HTableDescriptor(otherTable);
156 other.addFamily(new HColumnDescriptor(family));
157
158
159 HBaseAdmin admin = UTIL.getHBaseAdmin();
160 admin.createTable(primary);
161 admin.createTable(other);
162
163 HTable table = new HTable(UTIL.getConfiguration(), "primary");
164 Put p = new Put(new byte[] { 'a' });
165 p.add(family, null, new byte[] { 'a' });
166 table.put(p);
167 table.flushCommits();
168 table.close();
169
170 HTable target = new HTable(UTIL.getConfiguration(), otherTable);
171 assertTrue("Didn't complete update to target table!", completeCheck[0]);
172 assertEquals("Didn't find inserted row", 1, getKeyValueCount(target));
173 target.close();
174
175 }
176
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180
181
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.list().size();
191 System.out.println(count + ") " + res);
192 }
193 results.close();
194
195 return count;
196 }
197 }