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.coprocessor.example;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertFalse;
022
023import java.io.IOException;
024import org.apache.hadoop.hbase.HBaseClassTestRule;
025import org.apache.hadoop.hbase.HBaseTestingUtility;
026import org.apache.hadoop.hbase.TableName;
027import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;
028import org.apache.hadoop.hbase.client.Get;
029import org.apache.hadoop.hbase.client.Put;
030import org.apache.hadoop.hbase.client.Table;
031import org.apache.hadoop.hbase.client.TableDescriptorBuilder;
032import org.apache.hadoop.hbase.testclassification.CoprocessorTests;
033import org.apache.hadoop.hbase.testclassification.MediumTests;
034import org.apache.hadoop.hbase.util.Bytes;
035import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
036import org.apache.zookeeper.CreateMode;
037import org.apache.zookeeper.KeeperException;
038import org.apache.zookeeper.ZooDefs;
039import org.apache.zookeeper.ZooKeeper;
040import org.junit.AfterClass;
041import org.junit.BeforeClass;
042import org.junit.ClassRule;
043import org.junit.Test;
044import org.junit.experimental.categories.Category;
045
046@Category({ CoprocessorTests.class, MediumTests.class })
047public class TestZooKeeperScanPolicyObserver {
048
049  @ClassRule
050  public static final HBaseClassTestRule CLASS_RULE =
051    HBaseClassTestRule.forClass(TestZooKeeperScanPolicyObserver.class);
052
053  private static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
054
055  private static TableName NAME = TableName.valueOf("TestCP");
056
057  private static byte[] FAMILY = Bytes.toBytes("cf");
058
059  private static byte[] QUALIFIER = Bytes.toBytes("cq");
060
061  private static Table TABLE;
062
063  @BeforeClass
064  public static void setUp() throws Exception {
065    UTIL.startMiniCluster(3);
066    UTIL.getAdmin()
067      .createTable(TableDescriptorBuilder.newBuilder(NAME)
068        .setCoprocessor(ZooKeeperScanPolicyObserver.class.getName())
069        .setValue(ZooKeeperScanPolicyObserver.ZK_ENSEMBLE_KEY,
070          UTIL.getZkCluster().getAddress().toString())
071        .setValue(ZooKeeperScanPolicyObserver.ZK_SESSION_TIMEOUT_KEY, "2000")
072        .setColumnFamily(ColumnFamilyDescriptorBuilder.newBuilder(FAMILY).build()).build());
073    TABLE = UTIL.getConnection().getTable(NAME);
074  }
075
076  @AfterClass
077  public static void tearDown() throws Exception {
078    if (TABLE != null) {
079      TABLE.close();
080    }
081    UTIL.shutdownMiniCluster();
082  }
083
084  private void setExpireBefore(long time)
085    throws KeeperException, InterruptedException, IOException {
086    ZooKeeper zk = UTIL.getZooKeeperWatcher().getRecoverableZooKeeper().getZooKeeper();
087    if (zk.exists(ZooKeeperScanPolicyObserver.NODE, false) == null) {
088      zk.create(ZooKeeperScanPolicyObserver.NODE, Bytes.toBytes(time), ZooDefs.Ids.OPEN_ACL_UNSAFE,
089        CreateMode.PERSISTENT);
090    } else {
091      zk.setData(ZooKeeperScanPolicyObserver.NODE, Bytes.toBytes(time), -1);
092    }
093  }
094
095  private void assertValueEquals(int start, int end) throws IOException {
096    for (int i = start; i < end; i++) {
097      assertEquals(i,
098        Bytes.toInt(TABLE.get(new Get(Bytes.toBytes(i))).getValue(FAMILY, QUALIFIER)));
099    }
100  }
101
102  private void assertNotExists(int start, int end) throws IOException {
103    for (int i = start; i < end; i++) {
104      assertFalse(TABLE.exists(new Get(Bytes.toBytes(i))));
105    }
106  }
107
108  private void put(int start, int end, long ts) throws IOException {
109    for (int i = start; i < end; i++) {
110      TABLE.put(new Put(Bytes.toBytes(i)).addColumn(FAMILY, QUALIFIER, ts, Bytes.toBytes(i)));
111    }
112  }
113
114  @Test
115  public void test() throws IOException, KeeperException, InterruptedException {
116    long now = EnvironmentEdgeManager.currentTime();
117    put(0, 100, now - 10000);
118    assertValueEquals(0, 100);
119
120    setExpireBefore(now - 5000);
121    Thread.sleep(5000);
122    UTIL.getAdmin().flush(NAME);
123    assertNotExists(0, 100);
124
125    put(0, 50, now - 1000);
126    UTIL.getAdmin().flush(NAME);
127    put(50, 100, now - 100);
128    UTIL.getAdmin().flush(NAME);
129    assertValueEquals(0, 100);
130
131    setExpireBefore(now - 500);
132    Thread.sleep(5000);
133    UTIL.getAdmin().majorCompact(NAME);
134    UTIL.waitFor(30000, () -> UTIL.getHBaseCluster().getRegions(NAME).iterator().next()
135      .getStore(FAMILY).getStorefilesCount() == 1);
136    assertNotExists(0, 50);
137    assertValueEquals(50, 100);
138  }
139}