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.MediumTests;
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, MediumTests.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
054  @Before public void setup() throws IOException {
055    // Set it to a non-standard port.
056    TEST_UTIL.getConfiguration().setInt(HConstants.ZOOKEEPER_CLIENT_PORT,
057        PORT_NO);
058    this.dataDir = TEST_UTIL.getDataTestDir(this.getClass().getName());
059    FileSystem fs = FileSystem.get(TEST_UTIL.getConfiguration());
060    if (fs.exists(this.dataDir)) {
061      if (!fs.delete(this.dataDir, true)) {
062        throw new IOException("Failed cleanup of " + this.dataDir);
063      }
064    }
065    if (!fs.mkdirs(this.dataDir)) {
066      throw new IOException("Failed create of " + this.dataDir);
067    }
068  }
069
070  @Test 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),
076      Integer.valueOf(properties.getProperty("clientPort")));
077    assertEquals("localhost:2888:3888", properties.get("server.0"));
078    assertNull(properties.get("server.1"));
079
080    String oldValue = conf.get(HConstants.ZOOKEEPER_QUORUM);
081    conf.set(HConstants.ZOOKEEPER_QUORUM, "a.foo.bar,b.foo.bar,c.foo.bar");
082    properties = ZKConfig.makeZKProps(conf);
083    assertEquals(dataDir.toString(), properties.get("dataDir"));
084    assertEquals(Integer.valueOf(PORT_NO),
085      Integer.valueOf(properties.getProperty("clientPort")));
086    assertEquals("a.foo.bar:2888:3888", properties.get("server.0"));
087    assertEquals("b.foo.bar:2888:3888", properties.get("server.1"));
088    assertEquals("c.foo.bar:2888:3888", properties.get("server.2"));
089    assertNull(properties.get("server.3"));
090    conf.set(HConstants.ZOOKEEPER_QUORUM, oldValue);
091  }
092
093  @Test public void testShouldAssignDefaultZookeeperClientPort() {
094    Configuration config = HBaseConfiguration.create();
095    config.clear();
096    Properties p = ZKConfig.makeZKProps(config);
097    assertNotNull(p);
098    assertEquals(2181, p.get("clientPort"));
099  }
100
101  @Test
102  public void testGetZKQuorumServersString() {
103    Configuration config = new Configuration(TEST_UTIL.getConfiguration());
104    config.setInt(HConstants.ZOOKEEPER_CLIENT_PORT, 8888);
105    config.set(HConstants.ZOOKEEPER_QUORUM, "foo:1234,bar:5678,baz,qux:9012");
106
107    String s = ZKConfig.getZKQuorumServersString(config);
108    assertEquals("foo:1234,bar:5678,baz:8888,qux:9012", s);
109  }
110}