hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestVerifyCellsReplicationEndpoint.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.replication;
  19
  20 import static org.junit.Assert.assertArrayEquals;
  21
  22 import java.util.concurrent.BlockingQueue;
  23 import java.util.concurrent.LinkedBlockingQueue;
  24 import java.util.concurrent.TimeUnit;
  25 import java.util.concurrent.TimeoutException;
  26 import org.apache.hadoop.hbase.Cell;
  27 import org.apache.hadoop.hbase.CellUtil;
  28 import org.apache.hadoop.hbase.HBaseClassTestRule;
  29 import org.apache.hadoop.hbase.HBaseTestingUtility;
  30 import org.apache.hadoop.hbase.TableName;
  31 import org.apache.hadoop.hbase.client.Put;
  32 import org.apache.hadoop.hbase.client.Table;
  33 import org.apache.hadoop.hbase.testclassification.MediumTests;
  34 import org.apache.hadoop.hbase.testclassification.ReplicationTests;
  35 import org.apache.hadoop.hbase.util.Bytes;
  36 import org.apache.hadoop.hbase.wal.WAL;
  37 import org.apache.hadoop.hbase.wal.WALEdit;
  38 import org.junit.AfterClass;
  39 import org.junit.BeforeClass;
  40 import org.junit.ClassRule;
  41 import org.junit.Test;
  42 import org.junit.experimental.categories.Category;
  43 import org.slf4j.Logger;
  44 import org.slf4j.LoggerFactory;
  45
  46 /**
  47  * Confirm that the empty replication endpoint can work.
  48  */
  49 @Category({ ReplicationTests.class, MediumTests.class })
  50 public class TestVerifyCellsReplicationEndpoint {
  51
  52   @ClassRule
  53   public static final HBaseClassTestRule CLASS_RULE =
  54     HBaseClassTestRule.forClass(TestVerifyCellsReplicationEndpoint.class);
  55
  56   private static final Logger LOG =
  57     LoggerFactory.getLogger(TestVerifyCellsReplicationEndpoint.class);
  58
  59   private static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
  60
  61   private static final TableName TABLE_NAME = TableName.valueOf("empty");
  62
  63   private static final byte[] CF = Bytes.toBytes("family");
  64
  65   private static final byte[] CQ = Bytes.toBytes("qualifier");
  66
  67   private static final String PEER_ID = "empty";
  68
  69   private static final BlockingQueue<Cell> CELLS = new LinkedBlockingQueue<>();
  70
  71   public static final class EndpointForTest extends VerifyWALEntriesReplicationEndpoint {
  72
  73     @Override
  74     public boolean replicate(ReplicateContext replicateContext) {
  75       LOG.info(replicateContext.getEntries().toString());
  76       replicateContext.entries.stream().map(WAL.Entry::getEdit).map(WALEdit::getCells)
  77         .forEachOrdered(CELLS::addAll);
  78       return super.replicate(replicateContext);
  79     }
  80   }
  81
  82   @BeforeClass
  83   public static void setUp() throws Exception {
  84     UTIL.startMiniCluster(3);
  85     // notice that we do not need to set replication scope here, EmptyReplicationEndpoint take all
  86     // edits no matter what the replications scope is.
  87     UTIL.createTable(TABLE_NAME, CF);
  88     UTIL.getAdmin().addReplicationPeer(PEER_ID,
  89       ReplicationPeerConfig.newBuilder().setClusterKey("zk1:8888:/hbase")
  90         .setReplicationEndpointImpl(EndpointForTest.class.getName()).build());
  91   }
  92
  93   @AfterClass
  94   public static void tearDown() throws Exception {
  95     UTIL.shutdownMiniCluster();
  96   }
  97
  98   @Test
  99   public void test() throws Exception {
 100     try (Table table = UTIL.getConnection().getTable(TABLE_NAME)) {
 101       for (int i = 0; i < 100; i++) {
 102         table.put(new Put(Bytes.toBytes(i)).addColumn(CF, CQ, Bytes.toBytes(i)));
 103       }
 104     }
 105     long lastNoCellTime = -1;
 106     for (int i = 0; i < 100;) {
 107       Cell cell = CELLS.poll();
 108       if (cell == null) {
 109         if (lastNoCellTime < 0) {
 110           lastNoCellTime = System.nanoTime();
 111         } else {
 112           if (System.nanoTime() - lastNoCellTime >= TimeUnit.SECONDS.toNanos(30)) {
 113             throw new TimeoutException("Timeout waiting for wal edit");
 114           }
 115         }
 116         Thread.sleep(1000);
 117         continue;
 118       }
 119       lastNoCellTime = -1;
 120       if (!Bytes.equals(CF, CellUtil.cloneFamily(cell))) {
 121         // meta edits, such as open/close/flush, etc. skip
 122         continue;
 123       }
 124       assertArrayEquals(Bytes.toBytes(i), CellUtil.cloneRow(cell));
 125       assertArrayEquals(CQ, CellUtil.cloneQualifier(cell));
 126       assertArrayEquals(Bytes.toBytes(i), CellUtil.cloneValue(cell));
 127       i++;
 128     }
 129   }
 130 }