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| <div id="overview"><a href="../../../../../apidocs/org/trafodion/dcs/zookeeper/DcsQuorumPeer.html">View Javadoc</a></div><pre> |
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| <a class="jxr_linenumber" name="1" href="#1">1</a> <em class="jxr_javadoccomment">/**</em>
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| <a class="jxr_linenumber" name="2" href="#2">2</a> <em class="jxr_javadoccomment">* @@@ START COPYRIGHT @@@</em>
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| <a class="jxr_linenumber" name="3" href="#3">3</a>
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| <a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_javadoccomment">Licensed to the Apache Software Foundation (ASF) under one</em>
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| <a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_javadoccomment">or more contributor license agreements. See the NOTICE file</em>
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| <a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_javadoccomment">distributed with this work for additional information</em>
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| <a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_javadoccomment">regarding copyright ownership. The ASF licenses this file</em>
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| <a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_javadoccomment">to you under the Apache License, Version 2.0 (the</em>
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| <a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_javadoccomment">"License"); you may not use this file except in compliance</em>
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| <a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_javadoccomment">with the License. You may obtain a copy of the License at</em>
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| <a class="jxr_linenumber" name="11" href="#11">11</a>
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| <a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_javadoccomment"> <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
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| <a class="jxr_linenumber" name="13" href="#13">13</a>
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| <a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_javadoccomment">Unless required by applicable law or agreed to in writing,</em>
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| <a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_javadoccomment">software distributed under the License is distributed on an</em>
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| <a class="jxr_linenumber" name="16" href="#16">16</a> <em class="jxr_javadoccomment">"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em>
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| <a class="jxr_linenumber" name="17" href="#17">17</a> <em class="jxr_javadoccomment">KIND, either express or implied. See the License for the</em>
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| <a class="jxr_linenumber" name="18" href="#18">18</a> <em class="jxr_javadoccomment">specific language governing permissions and limitations</em>
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| <a class="jxr_linenumber" name="19" href="#19">19</a> <em class="jxr_javadoccomment">under the License.</em>
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| <a class="jxr_linenumber" name="20" href="#20">20</a>
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| <a class="jxr_linenumber" name="21" href="#21">21</a> <em class="jxr_javadoccomment">* @@@ END COPYRIGHT @@@</em>
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| <a class="jxr_linenumber" name="22" href="#22">22</a> <em class="jxr_javadoccomment"> */</em>
|
| <a class="jxr_linenumber" name="23" href="#23">23</a> <em class="jxr_javadoccomment">/**</em>
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| <a class="jxr_linenumber" name="24" href="#24">24</a> <em class="jxr_javadoccomment"> * Copyright 2010 The Apache Software Foundation</em>
|
| <a class="jxr_linenumber" name="25" href="#25">25</a> <em class="jxr_javadoccomment"> *</em>
|
| <a class="jxr_linenumber" name="26" href="#26">26</a> <em class="jxr_javadoccomment"> * Licensed to the Apache Software Foundation (ASF) under one</em>
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| <a class="jxr_linenumber" name="27" href="#27">27</a> <em class="jxr_javadoccomment"> * or more contributor license agreements. See the NOTICE file</em>
|
| <a class="jxr_linenumber" name="28" href="#28">28</a> <em class="jxr_javadoccomment"> * distributed with this work for additional information</em>
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| <a class="jxr_linenumber" name="29" href="#29">29</a> <em class="jxr_javadoccomment"> * regarding copyright ownership. The ASF licenses this file</em>
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| <a class="jxr_linenumber" name="30" href="#30">30</a> <em class="jxr_javadoccomment"> * to you under the Apache License, Version 2.0 (the</em>
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| <a class="jxr_linenumber" name="31" href="#31">31</a> <em class="jxr_javadoccomment"> * "License"); you may not use this file except in compliance</em>
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| <a class="jxr_linenumber" name="32" href="#32">32</a> <em class="jxr_javadoccomment"> * with the License. You may obtain a copy of the License at</em>
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| <a class="jxr_linenumber" name="33" href="#33">33</a> <em class="jxr_javadoccomment"> *</em>
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| <a class="jxr_linenumber" name="34" href="#34">34</a> <em class="jxr_javadoccomment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
|
| <a class="jxr_linenumber" name="35" href="#35">35</a> <em class="jxr_javadoccomment"> *</em>
|
| <a class="jxr_linenumber" name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em>
|
| <a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
|
| <a class="jxr_linenumber" name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
|
| <a class="jxr_linenumber" name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * See the License for the specific language governing permissions and</em>
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| <a class="jxr_linenumber" name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * limitations under the License.</em>
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| <a class="jxr_linenumber" name="41" href="#41">41</a> <em class="jxr_javadoccomment"> */</em>
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| <a class="jxr_linenumber" name="42" href="#42">42</a>
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| <a class="jxr_linenumber" name="43" href="#43">43</a> <strong class="jxr_keyword">package</strong> org.trafodion.dcs.zookeeper;
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| <a class="jxr_linenumber" name="44" href="#44">44</a>
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| <a class="jxr_linenumber" name="45" href="#45">45</a> <strong class="jxr_keyword">import</strong> java.io.File;
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| <a class="jxr_linenumber" name="46" href="#46">46</a> <strong class="jxr_keyword">import</strong> java.io.IOException;
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| <a class="jxr_linenumber" name="47" href="#47">47</a> <strong class="jxr_keyword">import</strong> java.io.PrintWriter;
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| <a class="jxr_linenumber" name="48" href="#48">48</a> <strong class="jxr_keyword">import</strong> java.net.InetAddress;
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| <a class="jxr_linenumber" name="49" href="#49">49</a> <strong class="jxr_keyword">import</strong> java.net.NetworkInterface;
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| <a class="jxr_linenumber" name="50" href="#50">50</a> <strong class="jxr_keyword">import</strong> java.net.UnknownHostException;
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| <a class="jxr_linenumber" name="51" href="#51">51</a> <strong class="jxr_keyword">import</strong> java.util.ArrayList;
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| <a class="jxr_linenumber" name="52" href="#52">52</a> <strong class="jxr_keyword">import</strong> java.util.Enumeration;
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| <a class="jxr_linenumber" name="53" href="#53">53</a> <strong class="jxr_keyword">import</strong> java.util.List;
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| <a class="jxr_linenumber" name="54" href="#54">54</a> <strong class="jxr_keyword">import</strong> java.util.Properties;
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| <a class="jxr_linenumber" name="55" href="#55">55</a> <strong class="jxr_keyword">import</strong> java.util.Map.Entry;
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| <a class="jxr_linenumber" name="56" href="#56">56</a>
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| <a class="jxr_linenumber" name="57" href="#57">57</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.conf.Configuration;
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| <a class="jxr_linenumber" name="58" href="#58">58</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.DcsConfiguration;
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| <a class="jxr_linenumber" name="59" href="#59">59</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.Strings;
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| <a class="jxr_linenumber" name="60" href="#60">60</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.net.DNS;
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| <a class="jxr_linenumber" name="61" href="#61">61</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.util.StringUtils;
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| <a class="jxr_linenumber" name="62" href="#62">62</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.server.ServerConfig;
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| <a class="jxr_linenumber" name="63" href="#63">63</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.server.ZooKeeperServerMain;
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| <a class="jxr_linenumber" name="64" href="#64">64</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.server.quorum.QuorumPeerConfig;
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| <a class="jxr_linenumber" name="65" href="#65">65</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.server.quorum.QuorumPeerMain;
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| <a class="jxr_linenumber" name="66" href="#66">66</a>
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| <a class="jxr_linenumber" name="67" href="#67">67</a> <strong class="jxr_keyword">import</strong> org.apache.commons.logging.Log;
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| <a class="jxr_linenumber" name="68" href="#68">68</a> <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
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| <a class="jxr_linenumber" name="69" href="#69">69</a> <em class="jxr_javadoccomment">/**</em>
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| <a class="jxr_linenumber" name="70" href="#70">70</a> <em class="jxr_javadoccomment"> * DCS's version of ZooKeeper's QuorumPeer. When DCS is set to manage</em>
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| <a class="jxr_linenumber" name="71" href="#71">71</a> <em class="jxr_javadoccomment"> * ZooKeeper, this class is used to start up QuorumPeer instances. By doing</em>
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| <a class="jxr_linenumber" name="72" href="#72">72</a> <em class="jxr_javadoccomment"> * things in here rather than directly calling to ZooKeeper, we have more</em>
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| <a class="jxr_linenumber" name="73" href="#73">73</a> <em class="jxr_javadoccomment"> * control over the process. This class uses {@link ZKConfig} to parse the</em>
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| <a class="jxr_linenumber" name="74" href="#74">74</a> <em class="jxr_javadoccomment"> * zoo.cfg and inject variables from DCS's site.xml configuration in.</em>
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| <a class="jxr_linenumber" name="75" href="#75">75</a> <em class="jxr_javadoccomment"> */</em>
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| <a class="jxr_linenumber" name="76" href="#76">76</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/zookeeper/DcsQuorumPeer.html">DcsQuorumPeer</a> {
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| <a class="jxr_linenumber" name="77" href="#77">77</a> <em class="jxr_javadoccomment">/**</em>
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| <a class="jxr_linenumber" name="78" href="#78">78</a> <em class="jxr_javadoccomment"> * Parse ZooKeeper configuration from DCS XML config and run a QuorumPeer.</em>
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| <a class="jxr_linenumber" name="79" href="#79">79</a> <em class="jxr_javadoccomment"> * @param args String[] of command line arguments. Not used.</em>
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| <a class="jxr_linenumber" name="80" href="#80">80</a> <em class="jxr_javadoccomment"> */</em>
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| <a class="jxr_linenumber" name="81" href="#81">81</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(DcsQuorumPeer.<strong class="jxr_keyword">class</strong>.getName());
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| <a class="jxr_linenumber" name="82" href="#82">82</a>
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| <a class="jxr_linenumber" name="83" href="#83">83</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/zookeeper/DcsQuorumPeer.html">DcsQuorumPeer</a>() {
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| <a class="jxr_linenumber" name="84" href="#84">84</a> Configuration conf = DcsConfiguration.create();
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| <a class="jxr_linenumber" name="85" href="#85">85</a> <strong class="jxr_keyword">try</strong> {
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| <a class="jxr_linenumber" name="86" href="#86">86</a> Properties zkProperties = ZKConfig.makeZKProps(conf);
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| <a class="jxr_linenumber" name="87" href="#87">87</a> writeMyID(zkProperties);
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| <a class="jxr_linenumber" name="88" href="#88">88</a> QuorumPeerConfig zkConfig = <strong class="jxr_keyword">new</strong> QuorumPeerConfig();
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| <a class="jxr_linenumber" name="89" href="#89">89</a> zkConfig.parseProperties(zkProperties);
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| <a class="jxr_linenumber" name="90" href="#90">90</a> System.out.println(<span class="jxr_string">"running Zookeeper"</span>);
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| <a class="jxr_linenumber" name="91" href="#91">91</a> runZKServer(zkConfig);
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| <a class="jxr_linenumber" name="92" href="#92">92</a> } <strong class="jxr_keyword">catch</strong> (Exception e) {
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| <a class="jxr_linenumber" name="93" href="#93">93</a> e.printStackTrace();
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| <a class="jxr_linenumber" name="94" href="#94">94</a> System.exit(-1);
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| <a class="jxr_linenumber" name="95" href="#95">95</a> }
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| <a class="jxr_linenumber" name="96" href="#96">96</a> }
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| <a class="jxr_linenumber" name="97" href="#97">97</a>
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| <a class="jxr_linenumber" name="98" href="#98">98</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> main(String[] args) {
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| <a class="jxr_linenumber" name="99" href="#99">99</a> DcsQuorumPeer qp = <strong class="jxr_keyword">new</strong> DcsQuorumPeer();
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| <a class="jxr_linenumber" name="100" href="#100">100</a> }
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| <a class="jxr_linenumber" name="101" href="#101">101</a>
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| <a class="jxr_linenumber" name="102" href="#102">102</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> runZKServer(QuorumPeerConfig zkConfig) <strong class="jxr_keyword">throws</strong> UnknownHostException, IOException {
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| <a class="jxr_linenumber" name="103" href="#103">103</a> <strong class="jxr_keyword">if</strong> (zkConfig.isDistributed()) {
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| <a class="jxr_linenumber" name="104" href="#104">104</a> QuorumPeerMain qp = <strong class="jxr_keyword">new</strong> QuorumPeerMain();
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| <a class="jxr_linenumber" name="105" href="#105">105</a> qp.runFromConfig(zkConfig);
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| <a class="jxr_linenumber" name="106" href="#106">106</a> } <strong class="jxr_keyword">else</strong> {
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| <a class="jxr_linenumber" name="107" href="#107">107</a> ZooKeeperServerMain zk = <strong class="jxr_keyword">new</strong> ZooKeeperServerMain();
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| <a class="jxr_linenumber" name="108" href="#108">108</a> ServerConfig serverConfig = <strong class="jxr_keyword">new</strong> ServerConfig();
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| <a class="jxr_linenumber" name="109" href="#109">109</a> serverConfig.readFrom(zkConfig);
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| <a class="jxr_linenumber" name="110" href="#110">110</a> zk.runFromConfig(serverConfig);
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| <a class="jxr_linenumber" name="111" href="#111">111</a> }
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| <a class="jxr_linenumber" name="112" href="#112">112</a> }
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| <a class="jxr_linenumber" name="113" href="#113">113</a>
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| <a class="jxr_linenumber" name="114" href="#114">114</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> addressIsLocalHost(String address) {
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| <a class="jxr_linenumber" name="115" href="#115">115</a> <strong class="jxr_keyword">return</strong> address.equals(<span class="jxr_string">"localhost"</span>) || address.equals(<span class="jxr_string">"127.0.0.1"</span>);
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| <a class="jxr_linenumber" name="116" href="#116">116</a> }
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| <a class="jxr_linenumber" name="117" href="#117">117</a>
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| <a class="jxr_linenumber" name="118" href="#118">118</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> writeMyID(Properties properties) <strong class="jxr_keyword">throws</strong> IOException {
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| <a class="jxr_linenumber" name="119" href="#119">119</a> <strong class="jxr_keyword">long</strong> myId = -1;
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| <a class="jxr_linenumber" name="120" href="#120">120</a>
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| <a class="jxr_linenumber" name="121" href="#121">121</a> Configuration conf = DcsConfiguration.create();
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| <a class="jxr_linenumber" name="122" href="#122">122</a> String myAddress = Strings.domainNamePointerToHostName(DNS.getDefaultHost(
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| <a class="jxr_linenumber" name="123" href="#123">123</a> conf.get(<span class="jxr_string">"dcs.zookeeper.dns.interface"</span>,<span class="jxr_string">"default"</span>),
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| <a class="jxr_linenumber" name="124" href="#124">124</a> conf.get(<span class="jxr_string">"dcs.zookeeper.dns.nameserver"</span>,<span class="jxr_string">"default"</span>)));
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| <a class="jxr_linenumber" name="125" href="#125">125</a>
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| <a class="jxr_linenumber" name="126" href="#126">126</a> List<String> ips = <strong class="jxr_keyword">new</strong> ArrayList<String>();
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| <a class="jxr_linenumber" name="127" href="#127">127</a>
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| <a class="jxr_linenumber" name="128" href="#128">128</a> <em class="jxr_comment">// Add what could be the best (configured) match</em>
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| <a class="jxr_linenumber" name="129" href="#129">129</a> ips.add(myAddress.contains(<span class="jxr_string">"."</span>) ?
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| <a class="jxr_linenumber" name="130" href="#130">130</a> myAddress :
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| <a class="jxr_linenumber" name="131" href="#131">131</a> StringUtils.simpleHostname(myAddress));
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| <a class="jxr_linenumber" name="132" href="#132">132</a>
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| <a class="jxr_linenumber" name="133" href="#133">133</a> <em class="jxr_comment">// For all nics get all hostnames and IPs</em>
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| <a class="jxr_linenumber" name="134" href="#134">134</a> Enumeration<?> nics = NetworkInterface.getNetworkInterfaces();
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| <a class="jxr_linenumber" name="135" href="#135">135</a> <strong class="jxr_keyword">while</strong>(nics.hasMoreElements()) {
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| <a class="jxr_linenumber" name="136" href="#136">136</a> Enumeration<?> rawAdrs =
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| <a class="jxr_linenumber" name="137" href="#137">137</a> ((NetworkInterface)nics.nextElement()).getInetAddresses();
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| <a class="jxr_linenumber" name="138" href="#138">138</a> <strong class="jxr_keyword">while</strong>(rawAdrs.hasMoreElements()) {
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| <a class="jxr_linenumber" name="139" href="#139">139</a> InetAddress inet = (InetAddress) rawAdrs.nextElement();
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| <a class="jxr_linenumber" name="140" href="#140">140</a> ips.add(StringUtils.simpleHostname(inet.getHostName()));
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| <a class="jxr_linenumber" name="141" href="#141">141</a> ips.add(inet.getHostAddress());
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| <a class="jxr_linenumber" name="142" href="#142">142</a> }
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| <a class="jxr_linenumber" name="143" href="#143">143</a> }
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| <a class="jxr_linenumber" name="144" href="#144">144</a>
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| <a class="jxr_linenumber" name="145" href="#145">145</a> <strong class="jxr_keyword">for</strong> (Entry<Object, Object> entry : properties.entrySet()) {
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| <a class="jxr_linenumber" name="146" href="#146">146</a> String key = entry.getKey().toString().trim();
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| <a class="jxr_linenumber" name="147" href="#147">147</a> String value = entry.getValue().toString().trim();
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| <a class="jxr_linenumber" name="148" href="#148">148</a> <strong class="jxr_keyword">if</strong> (key.startsWith(<span class="jxr_string">"server."</span>)) {
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| <a class="jxr_linenumber" name="149" href="#149">149</a> <strong class="jxr_keyword">int</strong> dot = key.indexOf('.');
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| <a class="jxr_linenumber" name="150" href="#150">150</a> <strong class="jxr_keyword">long</strong> id = Long.parseLong(key.substring(dot + 1));
|
| <a class="jxr_linenumber" name="151" href="#151">151</a> String[] parts = value.split(<span class="jxr_string">":"</span>);
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| <a class="jxr_linenumber" name="152" href="#152">152</a> String address = parts[0];
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| <a class="jxr_linenumber" name="153" href="#153">153</a> <strong class="jxr_keyword">if</strong> (addressIsLocalHost(address) || ips.contains(address)) {
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| <a class="jxr_linenumber" name="154" href="#154">154</a> myId = id;
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| <a class="jxr_linenumber" name="155" href="#155">155</a> <strong class="jxr_keyword">break</strong>;
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| <a class="jxr_linenumber" name="156" href="#156">156</a> }
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| <a class="jxr_linenumber" name="157" href="#157">157</a> }
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| <a class="jxr_linenumber" name="158" href="#158">158</a> }
|
| <a class="jxr_linenumber" name="159" href="#159">159</a>
|
| <a class="jxr_linenumber" name="160" href="#160">160</a> <em class="jxr_comment">// Set the max session timeout from the provided client-side timeout</em>
|
| <a class="jxr_linenumber" name="161" href="#161">161</a> properties.setProperty(<span class="jxr_string">"maxSessionTimeout"</span>,
|
| <a class="jxr_linenumber" name="162" href="#162">162</a> conf.get(<span class="jxr_string">"zookeeper.session.timeout"</span>, <span class="jxr_string">"180000"</span>));
|
| <a class="jxr_linenumber" name="163" href="#163">163</a>
|
| <a class="jxr_linenumber" name="164" href="#164">164</a> <strong class="jxr_keyword">if</strong> (myId == -1) {
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| <a class="jxr_linenumber" name="165" href="#165">165</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Could not find my address: "</span> + myAddress +
|
| <a class="jxr_linenumber" name="166" href="#166">166</a> <span class="jxr_string">" in list of ZooKeeper quorum servers"</span>);
|
| <a class="jxr_linenumber" name="167" href="#167">167</a> }
|
| <a class="jxr_linenumber" name="168" href="#168">168</a>
|
| <a class="jxr_linenumber" name="169" href="#169">169</a> String dataDirStr = properties.get(<span class="jxr_string">"dataDir"</span>).toString().trim();
|
| <a class="jxr_linenumber" name="170" href="#170">170</a> File dataDir = <strong class="jxr_keyword">new</strong> File(dataDirStr);
|
| <a class="jxr_linenumber" name="171" href="#171">171</a> <strong class="jxr_keyword">if</strong> (!dataDir.isDirectory()) {
|
| <a class="jxr_linenumber" name="172" href="#172">172</a> <strong class="jxr_keyword">if</strong> (!dataDir.mkdirs()) {
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| <a class="jxr_linenumber" name="173" href="#173">173</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Unable to create data dir "</span> + dataDir);
|
| <a class="jxr_linenumber" name="174" href="#174">174</a> }
|
| <a class="jxr_linenumber" name="175" href="#175">175</a> }
|
| <a class="jxr_linenumber" name="176" href="#176">176</a>
|
| <a class="jxr_linenumber" name="177" href="#177">177</a> File myIdFile = <strong class="jxr_keyword">new</strong> File(dataDir, <span class="jxr_string">"myid"</span>);
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| <a class="jxr_linenumber" name="178" href="#178">178</a> PrintWriter w = <strong class="jxr_keyword">new</strong> PrintWriter(myIdFile);
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| <a class="jxr_linenumber" name="179" href="#179">179</a> w.println(myId);
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| <a class="jxr_linenumber" name="180" href="#180">180</a> w.close();
|
| <a class="jxr_linenumber" name="181" href="#181">181</a> }
|
| <a class="jxr_linenumber" name="182" href="#182">182</a> }
|
| </pre> |
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