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.zookeeper;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertNotNull;
022import static org.junit.Assert.assertNull;
023
024import java.io.IOException;
025import java.util.Properties;
026import org.apache.hadoop.conf.Configuration;
027import org.apache.hadoop.fs.FileSystem;
028import org.apache.hadoop.fs.Path;
029import org.apache.hadoop.hbase.HBaseClassTestRule;
030import org.apache.hadoop.hbase.HBaseConfiguration;
031import org.apache.hadoop.hbase.HBaseZKTestingUtility;
032import org.apache.hadoop.hbase.HConstants;
033import org.apache.hadoop.hbase.testclassification.SmallTests;
034import org.apache.hadoop.hbase.testclassification.ZKTests;
035import org.junit.Before;
036import org.junit.ClassRule;
037import org.junit.Test;
038import org.junit.experimental.categories.Category;
039
040/**
041 * Test for HQuorumPeer.
042 */
043@Category({ ZKTests.class, SmallTests.class })
044public class TestHQuorumPeer {
045  @ClassRule
046  public static final HBaseClassTestRule CLASS_RULE =
047    HBaseClassTestRule.forClass(TestHQuorumPeer.class);
048
049  private static final HBaseZKTestingUtility TEST_UTIL = new HBaseZKTestingUtility();
050  private static int PORT_NO = 21818;
051  private Path dataDir;
052
053  @Before
054  public void setup() throws IOException {
055    // Set it to a non-standard port.
056    TEST_UTIL.getConfiguration().setInt(HConstants.ZOOKEEPER_CLIENT_PORT, PORT_NO);
057    this.dataDir = TEST_UTIL.getDataTestDir(this.getClass().getName());
058    FileSystem fs = FileSystem.get(TEST_UTIL.getConfiguration());
059    if (fs.exists(this.dataDir)) {
060      if (!fs.delete(this.dataDir, true)) {
061        throw new IOException("Failed cleanup of " + this.dataDir);
062      }
063    }
064    if (!fs.mkdirs(this.dataDir)) {
065      throw new IOException("Failed create of " + this.dataDir);
066    }
067  }
068
069  @Test
070  public void testMakeZKProps() {
071    Configuration conf = new Configuration(TEST_UTIL.getConfiguration());
072    conf.set(HConstants.ZOOKEEPER_DATA_DIR, this.dataDir.toString());
073    Properties properties = ZKConfig.makeZKProps(conf);
074    assertEquals(dataDir.toString(), (String) properties.get("dataDir"));
075    assertEquals(Integer.valueOf(PORT_NO), Integer.valueOf(properties.getProperty("clientPort")));
076    assertEquals("127.0.0.1:2888:3888", properties.get("server.0"));
077    assertNull(properties.get("server.1"));
078
079    String oldValue = conf.get(HConstants.ZOOKEEPER_QUORUM);
080    conf.set(HConstants.ZOOKEEPER_QUORUM, "a.foo.bar,b.foo.bar,c.foo.bar");
081    properties = ZKConfig.makeZKProps(conf);
082    assertEquals(dataDir.toString(), properties.get("dataDir"));
083    assertEquals(Integer.valueOf(PORT_NO), Integer.valueOf(properties.getProperty("clientPort")));
084    assertEquals("a.foo.bar:2888:3888", properties.get("server.0"));
085    assertEquals("b.foo.bar:2888:3888", properties.get("server.1"));
086    assertEquals("c.foo.bar:2888:3888", properties.get("server.2"));
087    assertNull(properties.get("server.3"));
088    conf.set(HConstants.ZOOKEEPER_QUORUM, oldValue);
089  }
090
091  @Test
092  public void testShouldAssignDefaultZookeeperClientPort() {
093    Configuration config = HBaseConfiguration.create();
094    config.clear();
095    Properties p = ZKConfig.makeZKProps(config);
096    assertNotNull(p);
097    assertEquals(2181, p.get("clientPort"));
098  }
099
100  @Test
101  public void testGetZKQuorumServersString() {
102    Configuration config = new Configuration(TEST_UTIL.getConfiguration());
103    config.setInt(HConstants.ZOOKEEPER_CLIENT_PORT, 8888);
104    config.set(HConstants.ZOOKEEPER_QUORUM, "foo:1234,bar:5678,baz,qux:9012");
105
106    String s = ZKConfig.getZKQuorumServersString(config);
107    assertEquals("foo:1234,bar:5678,baz:8888,qux:9012", s);
108  }
109}