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.client;
019
020import static org.junit.Assert.assertArrayEquals;
021import static org.junit.Assert.assertEquals;
022
023import java.io.IOException;
024import java.util.Optional;
025import java.util.concurrent.ExecutionException;
026import java.util.concurrent.TimeUnit;
027import java.util.concurrent.atomic.AtomicInteger;
028import org.apache.commons.io.IOUtils;
029import org.apache.hadoop.hbase.HBaseClassTestRule;
030import org.apache.hadoop.hbase.HBaseTestingUtility;
031import org.apache.hadoop.hbase.TableName;
032import org.apache.hadoop.hbase.coprocessor.ObserverContext;
033import org.apache.hadoop.hbase.coprocessor.RegionCoprocessor;
034import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
035import org.apache.hadoop.hbase.coprocessor.RegionObserver;
036import org.apache.hadoop.hbase.testclassification.ClientTests;
037import org.apache.hadoop.hbase.testclassification.MediumTests;
038import org.apache.hadoop.hbase.util.Bytes;
039import org.apache.hadoop.hbase.util.Threads;
040import org.junit.AfterClass;
041import org.junit.Before;
042import org.junit.BeforeClass;
043import org.junit.ClassRule;
044import org.junit.Rule;
045import org.junit.Test;
046import org.junit.experimental.categories.Category;
047import org.junit.rules.TestName;
048
049@Category({ MediumTests.class, ClientTests.class })
050public class TestAsyncTableNoncedRetry {
051
052  @ClassRule
053  public static final HBaseClassTestRule CLASS_RULE =
054    HBaseClassTestRule.forClass(TestAsyncTableNoncedRetry.class);
055
056  private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
057
058  private static TableName TABLE_NAME = TableName.valueOf("async");
059
060  private static byte[] FAMILY = Bytes.toBytes("cf");
061
062  private static byte[] QUALIFIER = Bytes.toBytes("cq");
063
064  private static byte[] VALUE = Bytes.toBytes("value");
065
066  private static AsyncConnection ASYNC_CONN;
067
068  @Rule
069  public TestName testName = new TestName();
070
071  private byte[] row;
072
073  private static AtomicInteger CALLED = new AtomicInteger();
074
075  private static long SLEEP_TIME = 2000;
076
077  public static final class SleepOnceCP implements RegionObserver, RegionCoprocessor {
078
079    @Override
080    public Optional<RegionObserver> getRegionObserver() {
081      return Optional.of(this);
082    }
083
084    @Override
085    public Result postAppend(ObserverContext<RegionCoprocessorEnvironment> c, Append append,
086        Result result) throws IOException {
087      if (CALLED.getAndIncrement() == 0) {
088        Threads.sleepWithoutInterrupt(SLEEP_TIME);
089      }
090      return RegionObserver.super.postAppend(c, append, result);
091    }
092
093    @Override
094    public Result postIncrement(ObserverContext<RegionCoprocessorEnvironment> c,
095        Increment increment, Result result) throws IOException {
096      if (CALLED.getAndIncrement() == 0) {
097        Threads.sleepWithoutInterrupt(SLEEP_TIME);
098      }
099      return RegionObserver.super.postIncrement(c, increment, result);
100    }
101  }
102
103  @BeforeClass
104  public static void setUpBeforeClass() throws Exception {
105    TEST_UTIL.startMiniCluster(1);
106    TEST_UTIL.getAdmin()
107      .createTable(TableDescriptorBuilder.newBuilder(TABLE_NAME)
108        .setColumnFamily(ColumnFamilyDescriptorBuilder.of(FAMILY))
109        .setCoprocessor(SleepOnceCP.class.getName()).build());
110    TEST_UTIL.waitTableAvailable(TABLE_NAME);
111    ASYNC_CONN = ConnectionFactory.createAsyncConnection(TEST_UTIL.getConfiguration()).get();
112  }
113
114  @AfterClass
115  public static void tearDownAfterClass() throws Exception {
116    IOUtils.closeQuietly(ASYNC_CONN);
117    TEST_UTIL.shutdownMiniCluster();
118  }
119
120  @Before
121  public void setUp() throws IOException, InterruptedException {
122    row = Bytes.toBytes(testName.getMethodName().replaceAll("[^0-9A-Za-z]", "_"));
123    CALLED.set(0);
124  }
125
126  @Test
127  public void testAppend() throws InterruptedException, ExecutionException {
128    assertEquals(0, CALLED.get());
129    AsyncTable<?> table = ASYNC_CONN.getTableBuilder(TABLE_NAME)
130      .setRpcTimeout(SLEEP_TIME / 2, TimeUnit.MILLISECONDS).build();
131    Result result = table.append(new Append(row).addColumn(FAMILY, QUALIFIER, VALUE)).get();
132    // make sure we called twice and the result is still correct
133    assertEquals(2, CALLED.get());
134    assertArrayEquals(VALUE, result.getValue(FAMILY, QUALIFIER));
135  }
136
137  @Test
138  public void testIncrement() throws InterruptedException, ExecutionException {
139    assertEquals(0, CALLED.get());
140    AsyncTable<?> table = ASYNC_CONN.getTableBuilder(TABLE_NAME)
141      .setRpcTimeout(SLEEP_TIME / 2, TimeUnit.MILLISECONDS).build();
142    assertEquals(1L, table.incrementColumnValue(row, FAMILY, QUALIFIER, 1L).get().longValue());
143    // make sure we called twice and the result is still correct
144    assertEquals(2, CALLED.get());
145  }
146}