hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestSyncReplicationWALProvider.java

   1 /**
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements.  See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership.  The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License.  You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18 package org.apache.hadoop.hbase.wal;
  19
  20 import static org.hamcrest.CoreMatchers.instanceOf;
  21 import static org.hamcrest.CoreMatchers.not;
  22 import static org.hamcrest.MatcherAssert.assertThat;
  23 import static org.junit.Assert.assertEquals;
  24
  25 import java.io.IOException;
  26 import java.util.Optional;
  27 import java.util.function.BiPredicate;
  28 import org.apache.hadoop.fs.Path;
  29 import org.apache.hadoop.hbase.HBaseClassTestRule;
  30 import org.apache.hadoop.hbase.HBaseTestingUtil;
  31 import org.apache.hadoop.hbase.TableName;
  32 import org.apache.hadoop.hbase.Waiter.ExplainingPredicate;
  33 import org.apache.hadoop.hbase.client.RegionInfo;
  34 import org.apache.hadoop.hbase.client.RegionInfoBuilder;
  35 import org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl;
  36 import org.apache.hadoop.hbase.regionserver.wal.DualAsyncFSWAL;
  37 import org.apache.hadoop.hbase.regionserver.wal.ProtobufLogReader;
  38 import org.apache.hadoop.hbase.regionserver.wal.ProtobufLogTestHelper;
  39 import org.apache.hadoop.hbase.replication.SyncReplicationState;
  40 import org.apache.hadoop.hbase.replication.regionserver.SyncReplicationPeerInfoProvider;
  41 import org.apache.hadoop.hbase.testclassification.MediumTests;
  42 import org.apache.hadoop.hbase.testclassification.RegionServerTests;
  43 import org.apache.hadoop.hbase.util.Bytes;
  44 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
  45 import org.apache.hadoop.hbase.util.Pair;
  46 import org.apache.hadoop.hdfs.DistributedFileSystem;
  47 import org.junit.AfterClass;
  48 import org.junit.BeforeClass;
  49 import org.junit.ClassRule;
  50 import org.junit.Test;
  51 import org.junit.experimental.categories.Category;
  52
  53 @Category({ RegionServerTests.class, MediumTests.class })
  54 public class TestSyncReplicationWALProvider {
  55
  56   @ClassRule
  57   public static final HBaseClassTestRule CLASS_RULE =
  58     HBaseClassTestRule.forClass(TestSyncReplicationWALProvider.class);
  59
  60   private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();
  61
  62   private static String PEER_ID = "1";
  63
  64   private static String REMOTE_WAL_DIR = "/RemoteWAL";
  65
  66   private static TableName TABLE = TableName.valueOf("table");
  67
  68   private static TableName TABLE_NO_REP = TableName.valueOf("table-no-rep");
  69
  70   private static RegionInfo REGION = RegionInfoBuilder.newBuilder(TABLE).build();
  71
  72   private static RegionInfo REGION_NO_REP = RegionInfoBuilder.newBuilder(TABLE_NO_REP).build();
  73
  74   private static WALFactory FACTORY;
  75
  76   public static final class InfoProvider implements SyncReplicationPeerInfoProvider {
  77
  78     @Override
  79     public Optional<Pair<String, String>> getPeerIdAndRemoteWALDir(TableName table) {
  80       if (table != null && table.equals(TABLE)) {
  81         return Optional.of(Pair.newPair(PEER_ID, REMOTE_WAL_DIR));
  82       } else {
  83         return Optional.empty();
  84       }
  85     }
  86
  87     @Override
  88     public boolean checkState(TableName table,
  89         BiPredicate<SyncReplicationState, SyncReplicationState> checker) {
  90       return false;
  91     }
  92   }
  93
  94   @BeforeClass
  95   public static void setUpBeforeClass() throws Exception {
  96     UTIL.startMiniDFSCluster(3);
  97     FACTORY = new WALFactory(UTIL.getConfiguration(), "test");
  98     ((SyncReplicationWALProvider) FACTORY.getWALProvider()).setPeerInfoProvider(new InfoProvider());
  99     UTIL.getTestFileSystem().mkdirs(new Path(REMOTE_WAL_DIR, PEER_ID));
 100   }
 101
 102   @AfterClass
 103   public static void tearDownAfterClass() throws IOException {
 104     FACTORY.close();
 105     UTIL.shutdownMiniDFSCluster();
 106   }
 107
 108   private void testReadWrite(DualAsyncFSWAL wal) throws Exception {
 109     int recordCount = 100;
 110     int columnCount = 10;
 111     byte[] row = Bytes.toBytes("testRow");
 112     long timestamp = EnvironmentEdgeManager.currentTime();
 113     MultiVersionConcurrencyControl mvcc = new MultiVersionConcurrencyControl();
 114     ProtobufLogTestHelper.doWrite(wal, REGION, TABLE, columnCount, recordCount, row, timestamp,
 115       mvcc);
 116     Path localFile = wal.getCurrentFileName();
 117     Path remoteFile = new Path(REMOTE_WAL_DIR + "/" + PEER_ID, localFile.getName());
 118     try (ProtobufLogReader reader =
 119       (ProtobufLogReader) FACTORY.createReader(UTIL.getTestFileSystem(), localFile)) {
 120       ProtobufLogTestHelper.doRead(reader, false, REGION, TABLE, columnCount, recordCount, row,
 121         timestamp);
 122     }
 123     try (ProtobufLogReader reader =
 124       (ProtobufLogReader) FACTORY.createReader(UTIL.getTestFileSystem(), remoteFile)) {
 125       ProtobufLogTestHelper.doRead(reader, false, REGION, TABLE, columnCount, recordCount, row,
 126         timestamp);
 127     }
 128     wal.rollWriter();
 129     DistributedFileSystem dfs = (DistributedFileSystem) UTIL.getDFSCluster().getFileSystem();
 130     UTIL.waitFor(5000, new ExplainingPredicate<Exception>() {
 131
 132       @Override
 133       public boolean evaluate() throws Exception {
 134         return dfs.isFileClosed(localFile) && dfs.isFileClosed(remoteFile);
 135       }
 136
 137       @Override
 138       public String explainFailure() throws Exception {
 139         StringBuilder sb = new StringBuilder();
 140         if (!dfs.isFileClosed(localFile)) {
 141           sb.append(localFile + " has not been closed yet.");
 142         }
 143         if (!dfs.isFileClosed(remoteFile)) {
 144           sb.append(remoteFile + " has not been closed yet.");
 145         }
 146         return sb.toString();
 147       }
 148     });
 149     try (ProtobufLogReader reader =
 150       (ProtobufLogReader) FACTORY.createReader(UTIL.getTestFileSystem(), localFile)) {
 151       ProtobufLogTestHelper.doRead(reader, true, REGION, TABLE, columnCount, recordCount, row,
 152         timestamp);
 153     }
 154     try (ProtobufLogReader reader =
 155       (ProtobufLogReader) FACTORY.createReader(UTIL.getTestFileSystem(), remoteFile)) {
 156       ProtobufLogTestHelper.doRead(reader, true, REGION, TABLE, columnCount, recordCount, row,
 157         timestamp);
 158     }
 159   }
 160
 161   @Test
 162   public void test() throws Exception {
 163     WAL walNoRep = FACTORY.getWAL(REGION_NO_REP);
 164     assertThat(walNoRep, not(instanceOf(DualAsyncFSWAL.class)));
 165     DualAsyncFSWAL wal = (DualAsyncFSWAL) FACTORY.getWAL(REGION);
 166     assertEquals(2, FACTORY.getWALs().size());
 167     testReadWrite(wal);
 168     SyncReplicationWALProvider walProvider = (SyncReplicationWALProvider) FACTORY.getWALProvider();
 169     walProvider.peerSyncReplicationStateChange(PEER_ID, SyncReplicationState.ACTIVE,
 170       SyncReplicationState.DOWNGRADE_ACTIVE, 1);
 171     assertEquals(1, FACTORY.getWALs().size());
 172   }
 173 }