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Posted to commits@trafodion.apache.org by db...@apache.org on 2016/05/25 20:15:56 UTC
[22/31] incubator-trafodion-site git commit: Rebuild Release 2.0.0
manuals for PRs 492 and 500
http://git-wip-us.apache.org/repos/asf/incubator-trafodion-site/blob/7af1709b/docs/2.0.0/dcs_reference/xref/org/trafodion/dcs/zookeeper/ZkClient.html
----------------------------------------------------------------------
diff --git a/docs/2.0.0/dcs_reference/xref/org/trafodion/dcs/zookeeper/ZkClient.html b/docs/2.0.0/dcs_reference/xref/org/trafodion/dcs/zookeeper/ZkClient.html
index 75049b3..03788e0 100644
--- a/docs/2.0.0/dcs_reference/xref/org/trafodion/dcs/zookeeper/ZkClient.html
+++ b/docs/2.0.0/dcs_reference/xref/org/trafodion/dcs/zookeeper/ZkClient.html
@@ -29,710 +29,690 @@
<a class="jxr_linenumber" name="19" href="#19">19</a> <em class="jxr_javadoccomment">under the License.</em>
<a class="jxr_linenumber" name="20" href="#20">20</a>
<a class="jxr_linenumber" name="21" href="#21">21</a> <em class="jxr_javadoccomment">* @@@ END COPYRIGHT @@@</em>
-<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>
-<a class="jxr_linenumber" name="24" href="#24">24</a> <em class="jxr_javadoccomment"> * Copyright 2011 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>
-<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>
-<a class="jxr_linenumber" name="29" href="#29">29</a> <em class="jxr_javadoccomment"> * regarding copyright ownership. The ASF licenses this file</em>
-<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>
-<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>
-<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>
-<a class="jxr_linenumber" name="33" href="#33">33</a> <em class="jxr_javadoccomment"> *</em>
-<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>
-<a class="jxr_linenumber" name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * limitations under the License.</em>
-<a class="jxr_linenumber" name="41" href="#41">41</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="42" href="#42">42</a>
-<a class="jxr_linenumber" name="43" href="#43">43</a> <strong class="jxr_keyword">package</strong> org.trafodion.dcs.zookeeper;
-<a class="jxr_linenumber" name="44" href="#44">44</a>
-<a class="jxr_linenumber" name="45" href="#45">45</a> <strong class="jxr_keyword">import</strong> java.io.*;
-<a class="jxr_linenumber" name="46" href="#46">46</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.CountDownLatch;
-<a class="jxr_linenumber" name="47" href="#47">47</a> <strong class="jxr_keyword">import</strong> java.util.ArrayList;
-<a class="jxr_linenumber" name="48" href="#48">48</a> <strong class="jxr_keyword">import</strong> java.util.List;
-<a class="jxr_linenumber" name="49" href="#49">49</a> <strong class="jxr_keyword">import</strong> java.util.LinkedList;
-<a class="jxr_linenumber" name="50" href="#50">50</a> <strong class="jxr_keyword">import</strong> java.util.Iterator;
-<a class="jxr_linenumber" name="51" href="#51">51</a> <strong class="jxr_keyword">import</strong> java.nio.charset.Charset;
-<a class="jxr_linenumber" name="52" href="#52">52</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.conf.Configuration;
-<a class="jxr_linenumber" name="53" href="#53">53</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.AsyncCallback;
-<a class="jxr_linenumber" name="54" href="#54">54</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.ZooKeeper;
-<a class="jxr_linenumber" name="55" href="#55">55</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.Watcher;
-<a class="jxr_linenumber" name="56" href="#56">56</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.WatchedEvent;
-<a class="jxr_linenumber" name="57" href="#57">57</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.CreateMode;
-<a class="jxr_linenumber" name="58" href="#58">58</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.ZooDefs;
-<a class="jxr_linenumber" name="59" href="#59">59</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.data.Stat;
-<a class="jxr_linenumber" name="60" href="#60">60</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.KeeperException;
-<a class="jxr_linenumber" name="61" href="#61">61</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.Op;
-<a class="jxr_linenumber" name="62" href="#62">62</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.OpResult;
-<a class="jxr_linenumber" name="63" href="#63">63</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.ZooKeeper.States;
-<a class="jxr_linenumber" name="64" href="#64">64</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.data.ACL;
-<a class="jxr_linenumber" name="65" href="#65">65</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.proto.CreateRequest;
-<a class="jxr_linenumber" name="66" href="#66">66</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.proto.SetDataRequest;
-<a class="jxr_linenumber" name="67" href="#67">67</a> <strong class="jxr_keyword">import</strong> org.apache.commons.logging.Log;
-<a class="jxr_linenumber" name="68" href="#68">68</a> <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
-<a class="jxr_linenumber" name="69" href="#69">69</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.DcsConfiguration;
-<a class="jxr_linenumber" name="70" href="#70">70</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.RetryCounter;
-<a class="jxr_linenumber" name="71" href="#71">71</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.RetryCounterFactory;
-<a class="jxr_linenumber" name="72" href="#72">72</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.Constants;
-<a class="jxr_linenumber" name="73" href="#73">73</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.Bytes;
-<a class="jxr_linenumber" name="74" href="#74">74</a>
-<a class="jxr_linenumber" name="75" href="#75">75</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/zookeeper/ZkClient.html">ZkClient</a> <strong class="jxr_keyword">implements</strong> Watcher {
-<a class="jxr_linenumber" name="76" href="#76">76</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(ZkClient.<strong class="jxr_keyword">class</strong>.getName());
-<a class="jxr_linenumber" name="77" href="#77">77</a> <strong class="jxr_keyword">private</strong> String path;
-<a class="jxr_linenumber" name="78" href="#78">78</a> <strong class="jxr_keyword">private</strong> List<String> children;
-<a class="jxr_linenumber" name="79" href="#79">79</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Charset CHARSET = Charset.forName(<span class="jxr_string">"UTF-8"</span>);
-<a class="jxr_linenumber" name="80" href="#80">80</a> <strong class="jxr_keyword">private</strong> Configuration conf;
-<a class="jxr_linenumber" name="81" href="#81">81</a> <strong class="jxr_keyword">private</strong> CountDownLatch connectedSignal = <strong class="jxr_keyword">new</strong> CountDownLatch(1);
-<a class="jxr_linenumber" name="82" href="#82">82</a> <strong class="jxr_keyword">private</strong> String zkServers;
-<a class="jxr_linenumber" name="83" href="#83">83</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> port;
-<a class="jxr_linenumber" name="84" href="#84">84</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> sessionTimeout = 0;
-<a class="jxr_linenumber" name="85" href="#85">85</a> <strong class="jxr_keyword">private</strong> ZooKeeper zk = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="86" href="#86">86</a> <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/util/RetryCounterFactory.html">RetryCounterFactory</a> retryCounterFactory;
-<a class="jxr_linenumber" name="87" href="#87">87</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> maxRetries = 0;
-<a class="jxr_linenumber" name="88" href="#88">88</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> retryIntervalMillis = 0;
-<a class="jxr_linenumber" name="89" href="#89">89</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> String identifier = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="90" href="#90">90</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> byte[] id = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="91" href="#91">91</a> <strong class="jxr_keyword">private</strong> String parentZnode;
-<a class="jxr_linenumber" name="92" href="#92">92</a>
-<a class="jxr_linenumber" name="93" href="#93">93</a> <em class="jxr_comment">// The metadata attached to each piece of data has the</em>
-<a class="jxr_linenumber" name="94" href="#94">94</a> <em class="jxr_comment">// format:</em>
-<a class="jxr_linenumber" name="95" href="#95">95</a> <em class="jxr_comment">// <magic> 1-byte constant</em>
-<a class="jxr_linenumber" name="96" href="#96">96</a> <em class="jxr_comment">// <id length> 4-byte big-endian integer (length of next field)</em>
-<a class="jxr_linenumber" name="97" href="#97">97</a> <em class="jxr_comment">// <id> identifier corresponding uniquely to this process</em>
-<a class="jxr_linenumber" name="98" href="#98">98</a> <em class="jxr_comment">// It is prepended to the data supplied by the user.</em>
-<a class="jxr_linenumber" name="99" href="#99">99</a>
-<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_comment">// the magic number is to be backward compatible</em>
-<a class="jxr_linenumber" name="101" href="#101">101</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> byte MAGIC =(byte) 0XFF;
-<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">final</strong> <strong class="jxr_keyword">int</strong> MAGIC_SIZE = Bytes.SIZEOF_BYTE;
-<a class="jxr_linenumber" name="103" href="#103">103</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> ID_LENGTH_OFFSET = MAGIC_SIZE;
-<a class="jxr_linenumber" name="104" href="#104">104</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> ID_LENGTH_SIZE = Bytes.SIZEOF_INT;
-<a class="jxr_linenumber" name="105" href="#105">105</a>
-<a class="jxr_linenumber" name="106" href="#106">106</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> init() {
-<a class="jxr_linenumber" name="107" href="#107">107</a> <strong class="jxr_keyword">this</strong>.parentZnode = conf.get(Constants.ZOOKEEPER_ZNODE_PARENT,Constants.DEFAULT_ZOOKEEPER_ZNODE_PARENT);
-<a class="jxr_linenumber" name="108" href="#108">108</a> <strong class="jxr_keyword">this</strong>.path = <strong class="jxr_keyword">this</strong>.parentZnode + Constants.DEFAULT_ZOOKEEPER_ZNODE_PARENT;
-<a class="jxr_linenumber" name="109" href="#109">109</a> <strong class="jxr_keyword">this</strong>.port = conf.getInt(Constants.ZOOKEEPER_CLIENT_PORT, Constants.DEFAULT_ZOOKEEPER_CLIENT_PORT);
-<a class="jxr_linenumber" name="110" href="#110">110</a> String[] servers = conf.getStrings(Constants.ZOOKEEPER_QUORUM,Constants.LOCALHOST);
-<a class="jxr_linenumber" name="111" href="#111">111</a> StringBuffer hosts = <strong class="jxr_keyword">new</strong> StringBuffer();
-<a class="jxr_linenumber" name="112" href="#112">112</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i < servers.length; ++i) {
-<a class="jxr_linenumber" name="113" href="#113">113</a> <strong class="jxr_keyword">if</strong>(i != 0 )
-<a class="jxr_linenumber" name="114" href="#114">114</a> hosts.append(<span class="jxr_string">","</span>);
-<a class="jxr_linenumber" name="115" href="#115">115</a> hosts.append(servers[i]);
-<a class="jxr_linenumber" name="116" href="#116">116</a> hosts.append(<span class="jxr_string">":"</span>);
-<a class="jxr_linenumber" name="117" href="#117">117</a> hosts.append(port);
-<a class="jxr_linenumber" name="118" href="#118">118</a> }
-<a class="jxr_linenumber" name="119" href="#119">119</a> <strong class="jxr_keyword">this</strong>.zkServers = hosts.toString();
-<a class="jxr_linenumber" name="120" href="#120">120</a> <strong class="jxr_keyword">this</strong>.sessionTimeout = conf.getInt(Constants.ZK_SESSION_TIMEOUT,Constants.DEFAULT_ZK_SESSION_TIMEOUT);
-<a class="jxr_linenumber" name="121" href="#121">121</a> <strong class="jxr_keyword">this</strong>.maxRetries = conf.getInt(Constants.ZK_RECOVERY_RETRY,Constants.DEFAULT_ZK_RECOVERY_RETRY);
-<a class="jxr_linenumber" name="122" href="#122">122</a> <strong class="jxr_keyword">this</strong>.retryIntervalMillis = conf.getInt(Constants.ZK_RECOVERY_RETRY_INTERVAL_MILLIS,Constants.DEFAULT_ZK_RECOVERY_RETRY_INTERVAL_MILLIS);
-<a class="jxr_linenumber" name="123" href="#123">123</a> retryCounterFactory = <strong class="jxr_keyword">new</strong> <a href="../../../../org/trafodion/dcs/util/RetryCounterFactory.html">RetryCounterFactory</a>(maxRetries, retryIntervalMillis);
-<a class="jxr_linenumber" name="124" href="#124">124</a> LOG.debug(<span class="jxr_string">"ZooKeeper Servers:"</span> + zkServers + <span class="jxr_string">",SessionTimeout:"</span> + <strong class="jxr_keyword">this</strong>.sessionTimeout + <span class="jxr_string">",MaxRetries:"</span> + maxRetries + <span class="jxr_string">",RetryIntervalMillis:"</span> + retryIntervalMillis);
-<a class="jxr_linenumber" name="125" href="#125">125</a> }
-<a class="jxr_linenumber" name="126" href="#126">126</a>
-<a class="jxr_linenumber" name="127" href="#127">127</a> <strong class="jxr_keyword">public</strong> String getZkQuorum(){
-<a class="jxr_linenumber" name="128" href="#128">128</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.zkServers;
+<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> <strong class="jxr_keyword">package</strong> org.trafodion.dcs.zookeeper;
+<a class="jxr_linenumber" name="24" href="#24">24</a>
+<a class="jxr_linenumber" name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.io.*;
+<a class="jxr_linenumber" name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.CountDownLatch;
+<a class="jxr_linenumber" name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> java.util.ArrayList;
+<a class="jxr_linenumber" name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> java.util.List;
+<a class="jxr_linenumber" name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> java.util.LinkedList;
+<a class="jxr_linenumber" name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> java.util.Iterator;
+<a class="jxr_linenumber" name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> java.nio.charset.Charset;
+<a class="jxr_linenumber" name="32" href="#32">32</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.conf.Configuration;
+<a class="jxr_linenumber" name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.AsyncCallback;
+<a class="jxr_linenumber" name="34" href="#34">34</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.ZooKeeper;
+<a class="jxr_linenumber" name="35" href="#35">35</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.Watcher;
+<a class="jxr_linenumber" name="36" href="#36">36</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.WatchedEvent;
+<a class="jxr_linenumber" name="37" href="#37">37</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.CreateMode;
+<a class="jxr_linenumber" name="38" href="#38">38</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.ZooDefs;
+<a class="jxr_linenumber" name="39" href="#39">39</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.data.Stat;
+<a class="jxr_linenumber" name="40" href="#40">40</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.KeeperException;
+<a class="jxr_linenumber" name="41" href="#41">41</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.Op;
+<a class="jxr_linenumber" name="42" href="#42">42</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.OpResult;
+<a class="jxr_linenumber" name="43" href="#43">43</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.ZooKeeper.States;
+<a class="jxr_linenumber" name="44" href="#44">44</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.data.ACL;
+<a class="jxr_linenumber" name="45" href="#45">45</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.proto.CreateRequest;
+<a class="jxr_linenumber" name="46" href="#46">46</a> <strong class="jxr_keyword">import</strong> org.apache.zookeeper.proto.SetDataRequest;
+<a class="jxr_linenumber" name="47" href="#47">47</a> <strong class="jxr_keyword">import</strong> org.apache.commons.logging.Log;
+<a class="jxr_linenumber" name="48" href="#48">48</a> <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
+<a class="jxr_linenumber" name="49" href="#49">49</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.DcsConfiguration;
+<a class="jxr_linenumber" name="50" href="#50">50</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.RetryCounter;
+<a class="jxr_linenumber" name="51" href="#51">51</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.RetryCounterFactory;
+<a class="jxr_linenumber" name="52" href="#52">52</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.Constants;
+<a class="jxr_linenumber" name="53" href="#53">53</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.Bytes;
+<a class="jxr_linenumber" name="54" href="#54">54</a>
+<a class="jxr_linenumber" name="55" href="#55">55</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/zookeeper/ZkClient.html">ZkClient</a> <strong class="jxr_keyword">implements</strong> Watcher {
+<a class="jxr_linenumber" name="56" href="#56">56</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(ZkClient.<strong class="jxr_keyword">class</strong>.getName());
+<a class="jxr_linenumber" name="57" href="#57">57</a> <strong class="jxr_keyword">private</strong> String path;
+<a class="jxr_linenumber" name="58" href="#58">58</a> <strong class="jxr_keyword">private</strong> List<String> children;
+<a class="jxr_linenumber" name="59" href="#59">59</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Charset CHARSET = Charset.forName(<span class="jxr_string">"UTF-8"</span>);
+<a class="jxr_linenumber" name="60" href="#60">60</a> <strong class="jxr_keyword">private</strong> Configuration conf;
+<a class="jxr_linenumber" name="61" href="#61">61</a> <strong class="jxr_keyword">private</strong> CountDownLatch connectedSignal = <strong class="jxr_keyword">new</strong> CountDownLatch(1);
+<a class="jxr_linenumber" name="62" href="#62">62</a> <strong class="jxr_keyword">private</strong> String zkServers;
+<a class="jxr_linenumber" name="63" href="#63">63</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> port;
+<a class="jxr_linenumber" name="64" href="#64">64</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> sessionTimeout = 0;
+<a class="jxr_linenumber" name="65" href="#65">65</a> <strong class="jxr_keyword">private</strong> ZooKeeper zk = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="66" href="#66">66</a> <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/util/RetryCounterFactory.html">RetryCounterFactory</a> retryCounterFactory;
+<a class="jxr_linenumber" name="67" href="#67">67</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> maxRetries = 0;
+<a class="jxr_linenumber" name="68" href="#68">68</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> retryIntervalMillis = 0;
+<a class="jxr_linenumber" name="69" href="#69">69</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> String identifier = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="70" href="#70">70</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> byte[] id = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="71" href="#71">71</a> <strong class="jxr_keyword">private</strong> String parentZnode;
+<a class="jxr_linenumber" name="72" href="#72">72</a>
+<a class="jxr_linenumber" name="73" href="#73">73</a> <em class="jxr_comment">// The metadata attached to each piece of data has the</em>
+<a class="jxr_linenumber" name="74" href="#74">74</a> <em class="jxr_comment">// format:</em>
+<a class="jxr_linenumber" name="75" href="#75">75</a> <em class="jxr_comment">// <magic> 1-byte constant</em>
+<a class="jxr_linenumber" name="76" href="#76">76</a> <em class="jxr_comment">// <id length> 4-byte big-endian integer (length of next field)</em>
+<a class="jxr_linenumber" name="77" href="#77">77</a> <em class="jxr_comment">// <id> identifier corresponding uniquely to this process</em>
+<a class="jxr_linenumber" name="78" href="#78">78</a> <em class="jxr_comment">// It is prepended to the data supplied by the user.</em>
+<a class="jxr_linenumber" name="79" href="#79">79</a>
+<a class="jxr_linenumber" name="80" href="#80">80</a> <em class="jxr_comment">// the magic number is to be backward compatible</em>
+<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> byte MAGIC =(byte) 0XFF;
+<a class="jxr_linenumber" name="82" href="#82">82</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> MAGIC_SIZE = Bytes.SIZEOF_BYTE;
+<a class="jxr_linenumber" name="83" href="#83">83</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> ID_LENGTH_OFFSET = MAGIC_SIZE;
+<a class="jxr_linenumber" name="84" href="#84">84</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> ID_LENGTH_SIZE = Bytes.SIZEOF_INT;
+<a class="jxr_linenumber" name="85" href="#85">85</a>
+<a class="jxr_linenumber" name="86" href="#86">86</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> init() {
+<a class="jxr_linenumber" name="87" href="#87">87</a> <strong class="jxr_keyword">this</strong>.parentZnode = conf.get(Constants.ZOOKEEPER_ZNODE_PARENT,Constants.DEFAULT_ZOOKEEPER_ZNODE_PARENT);
+<a class="jxr_linenumber" name="88" href="#88">88</a> <strong class="jxr_keyword">this</strong>.path = <strong class="jxr_keyword">this</strong>.parentZnode + Constants.DEFAULT_ZOOKEEPER_ZNODE_PARENT;
+<a class="jxr_linenumber" name="89" href="#89">89</a> <strong class="jxr_keyword">this</strong>.port = conf.getInt(Constants.ZOOKEEPER_CLIENT_PORT, Constants.DEFAULT_ZOOKEEPER_CLIENT_PORT);
+<a class="jxr_linenumber" name="90" href="#90">90</a> String[] servers = conf.getStrings(Constants.ZOOKEEPER_QUORUM,Constants.LOCALHOST);
+<a class="jxr_linenumber" name="91" href="#91">91</a> StringBuffer hosts = <strong class="jxr_keyword">new</strong> StringBuffer();
+<a class="jxr_linenumber" name="92" href="#92">92</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i < servers.length; ++i) {
+<a class="jxr_linenumber" name="93" href="#93">93</a> <strong class="jxr_keyword">if</strong>(i != 0 )
+<a class="jxr_linenumber" name="94" href="#94">94</a> hosts.append(<span class="jxr_string">","</span>);
+<a class="jxr_linenumber" name="95" href="#95">95</a> hosts.append(servers[i]);
+<a class="jxr_linenumber" name="96" href="#96">96</a> hosts.append(<span class="jxr_string">":"</span>);
+<a class="jxr_linenumber" name="97" href="#97">97</a> hosts.append(port);
+<a class="jxr_linenumber" name="98" href="#98">98</a> }
+<a class="jxr_linenumber" name="99" href="#99">99</a> <strong class="jxr_keyword">this</strong>.zkServers = hosts.toString();
+<a class="jxr_linenumber" name="100" href="#100">100</a> <strong class="jxr_keyword">this</strong>.sessionTimeout = conf.getInt(Constants.ZK_SESSION_TIMEOUT,Constants.DEFAULT_ZK_SESSION_TIMEOUT);
+<a class="jxr_linenumber" name="101" href="#101">101</a> <strong class="jxr_keyword">this</strong>.maxRetries = conf.getInt(Constants.ZK_RECOVERY_RETRY,Constants.DEFAULT_ZK_RECOVERY_RETRY);
+<a class="jxr_linenumber" name="102" href="#102">102</a> <strong class="jxr_keyword">this</strong>.retryIntervalMillis = conf.getInt(Constants.ZK_RECOVERY_RETRY_INTERVAL_MILLIS,Constants.DEFAULT_ZK_RECOVERY_RETRY_INTERVAL_MILLIS);
+<a class="jxr_linenumber" name="103" href="#103">103</a> retryCounterFactory = <strong class="jxr_keyword">new</strong> <a href="../../../../org/trafodion/dcs/util/RetryCounterFactory.html">RetryCounterFactory</a>(maxRetries, retryIntervalMillis);
+<a class="jxr_linenumber" name="104" href="#104">104</a> LOG.debug(<span class="jxr_string">"ZooKeeper Servers:"</span> + zkServers + <span class="jxr_string">",SessionTimeout:"</span> + <strong class="jxr_keyword">this</strong>.sessionTimeout + <span class="jxr_string">",MaxRetries:"</span> + maxRetries + <span class="jxr_string">",RetryIntervalMillis:"</span> + retryIntervalMillis);
+<a class="jxr_linenumber" name="105" href="#105">105</a> }
+<a class="jxr_linenumber" name="106" href="#106">106</a>
+<a class="jxr_linenumber" name="107" href="#107">107</a> <strong class="jxr_keyword">public</strong> String getZkQuorum(){
+<a class="jxr_linenumber" name="108" href="#108">108</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.zkServers;
+<a class="jxr_linenumber" name="109" href="#109">109</a> }
+<a class="jxr_linenumber" name="110" href="#110">110</a>
+<a class="jxr_linenumber" name="111" href="#111">111</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/zookeeper/ZkClient.html">ZkClient</a>() {
+<a class="jxr_linenumber" name="112" href="#112">112</a> <strong class="jxr_keyword">this</strong>.conf = DcsConfiguration.create();
+<a class="jxr_linenumber" name="113" href="#113">113</a> init();
+<a class="jxr_linenumber" name="114" href="#114">114</a> }
+<a class="jxr_linenumber" name="115" href="#115">115</a>
+<a class="jxr_linenumber" name="116" href="#116">116</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/zookeeper/ZkClient.html">ZkClient</a>(<strong class="jxr_keyword">int</strong> sessionTimeout,<strong class="jxr_keyword">int</strong> maxRetries,<strong class="jxr_keyword">int</strong> retryIntervalMillis) {
+<a class="jxr_linenumber" name="117" href="#117">117</a> <strong class="jxr_keyword">this</strong>.conf = DcsConfiguration.create();
+<a class="jxr_linenumber" name="118" href="#118">118</a> <strong class="jxr_keyword">this</strong>.conf.setInt(Constants.ZK_SESSION_TIMEOUT,sessionTimeout);
+<a class="jxr_linenumber" name="119" href="#119">119</a> <strong class="jxr_keyword">this</strong>.conf.setInt(Constants.ZK_RECOVERY_RETRY,maxRetries);
+<a class="jxr_linenumber" name="120" href="#120">120</a> <strong class="jxr_keyword">this</strong>.conf.setInt(Constants.ZK_RECOVERY_RETRY_INTERVAL_MILLIS,retryIntervalMillis);
+<a class="jxr_linenumber" name="121" href="#121">121</a> init();
+<a class="jxr_linenumber" name="122" href="#122">122</a> }
+<a class="jxr_linenumber" name="123" href="#123">123</a>
+<a class="jxr_linenumber" name="124" href="#124">124</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/zookeeper/ZkClient.html">ZkClient</a>(String zkhost, <strong class="jxr_keyword">int</strong> zkport) {
+<a class="jxr_linenumber" name="125" href="#125">125</a> <strong class="jxr_keyword">this</strong>.conf = DcsConfiguration.create();
+<a class="jxr_linenumber" name="126" href="#126">126</a> <strong class="jxr_keyword">this</strong>.conf.setStrings(Constants.ZOOKEEPER_QUORUM,zkhost);
+<a class="jxr_linenumber" name="127" href="#127">127</a> <strong class="jxr_keyword">this</strong>.conf.setInt(Constants.ZOOKEEPER_CLIENT_PORT, zkport);
+<a class="jxr_linenumber" name="128" href="#128">128</a> init();
<a class="jxr_linenumber" name="129" href="#129">129</a> }
-<a class="jxr_linenumber" name="130" href="#130">130</a>
-<a class="jxr_linenumber" name="131" href="#131">131</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/zookeeper/ZkClient.html">ZkClient</a>() {
-<a class="jxr_linenumber" name="132" href="#132">132</a> <strong class="jxr_keyword">this</strong>.conf = DcsConfiguration.create();
-<a class="jxr_linenumber" name="133" href="#133">133</a> init();
-<a class="jxr_linenumber" name="134" href="#134">134</a> }
-<a class="jxr_linenumber" name="135" href="#135">135</a>
-<a class="jxr_linenumber" name="136" href="#136">136</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/zookeeper/ZkClient.html">ZkClient</a>(<strong class="jxr_keyword">int</strong> sessionTimeout,<strong class="jxr_keyword">int</strong> maxRetries,<strong class="jxr_keyword">int</strong> retryIntervalMillis) {
-<a class="jxr_linenumber" name="137" href="#137">137</a> <strong class="jxr_keyword">this</strong>.conf = DcsConfiguration.create();
-<a class="jxr_linenumber" name="138" href="#138">138</a> <strong class="jxr_keyword">this</strong>.conf.setInt(Constants.ZK_SESSION_TIMEOUT,sessionTimeout);
-<a class="jxr_linenumber" name="139" href="#139">139</a> <strong class="jxr_keyword">this</strong>.conf.setInt(Constants.ZK_RECOVERY_RETRY,maxRetries);
-<a class="jxr_linenumber" name="140" href="#140">140</a> <strong class="jxr_keyword">this</strong>.conf.setInt(Constants.ZK_RECOVERY_RETRY_INTERVAL_MILLIS,retryIntervalMillis);
-<a class="jxr_linenumber" name="141" href="#141">141</a> init();
-<a class="jxr_linenumber" name="142" href="#142">142</a> }
-<a class="jxr_linenumber" name="143" href="#143">143</a>
-<a class="jxr_linenumber" name="144" href="#144">144</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/zookeeper/ZkClient.html">ZkClient</a>(String zkhost, <strong class="jxr_keyword">int</strong> zkport) {
-<a class="jxr_linenumber" name="145" href="#145">145</a> <strong class="jxr_keyword">this</strong>.conf = DcsConfiguration.create();
-<a class="jxr_linenumber" name="146" href="#146">146</a> <strong class="jxr_keyword">this</strong>.conf.setStrings(Constants.ZOOKEEPER_QUORUM,zkhost);
-<a class="jxr_linenumber" name="147" href="#147">147</a> <strong class="jxr_keyword">this</strong>.conf.setInt(Constants.ZOOKEEPER_CLIENT_PORT, zkport);
-<a class="jxr_linenumber" name="148" href="#148">148</a> init();
-<a class="jxr_linenumber" name="149" href="#149">149</a> }
-<a class="jxr_linenumber" name="150" href="#150">150</a>
-<a class="jxr_linenumber" name="151" href="#151">151</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> connect() <strong class="jxr_keyword">throws</strong> IOException, InterruptedException {
-<a class="jxr_linenumber" name="152" href="#152">152</a> <strong class="jxr_keyword">if</strong>(zk==<strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="153" href="#153">153</a> <strong class="jxr_keyword">this</strong>.zk = <strong class="jxr_keyword">new</strong> ZooKeeper(zkServers, sessionTimeout, <strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="130" href="#130">130</a>
+<a class="jxr_linenumber" name="131" href="#131">131</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> connect() <strong class="jxr_keyword">throws</strong> IOException, InterruptedException {
+<a class="jxr_linenumber" name="132" href="#132">132</a> <strong class="jxr_keyword">if</strong>(zk==<strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="133" href="#133">133</a> <strong class="jxr_keyword">this</strong>.zk = <strong class="jxr_keyword">new</strong> ZooKeeper(zkServers, sessionTimeout, <strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="134" href="#134">134</a>
+<a class="jxr_linenumber" name="135" href="#135">135</a> <em class="jxr_comment">//wait 3 seconds to connect</em>
+<a class="jxr_linenumber" name="136" href="#136">136</a> <strong class="jxr_keyword">int</strong> retries=0;
+<a class="jxr_linenumber" name="137" href="#137">137</a> <strong class="jxr_keyword">while</strong>(<strong class="jxr_keyword">this</strong>.zk.getState() != ZooKeeper.States.CONNECTED) {
+<a class="jxr_linenumber" name="138" href="#138">138</a> LOG.debug(<span class="jxr_string">"Zookeeper.State="</span> + <strong class="jxr_keyword">this</strong>.zk.getState());
+<a class="jxr_linenumber" name="139" href="#139">139</a> <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="140" href="#140">140</a> Thread.sleep(1000L);<em class="jxr_comment">//1 second</em>
+<a class="jxr_linenumber" name="141" href="#141">141</a> retries++;
+<a class="jxr_linenumber" name="142" href="#142">142</a> } <strong class="jxr_keyword">catch</strong> (InterruptedException ie) {}
+<a class="jxr_linenumber" name="143" href="#143">143</a>
+<a class="jxr_linenumber" name="144" href="#144">144</a> <strong class="jxr_keyword">if</strong>(retries > 3)
+<a class="jxr_linenumber" name="145" href="#145">145</a> <strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="146" href="#146">146</a> }
+<a class="jxr_linenumber" name="147" href="#147">147</a>
+<a class="jxr_linenumber" name="148" href="#148">148</a> <strong class="jxr_keyword">if</strong>(<strong class="jxr_keyword">this</strong>.zk.getState() != ZooKeeper.States.CONNECTED) {
+<a class="jxr_linenumber" name="149" href="#149">149</a> <strong class="jxr_keyword">this</strong>.zk.close();
+<a class="jxr_linenumber" name="150" href="#150">150</a> LOG.error(<span class="jxr_string">"Zookeeper.State ["</span> + <strong class="jxr_keyword">this</strong>.zk.getState() + <span class="jxr_string">"]"</span>);
+<a class="jxr_linenumber" name="151" href="#151">151</a> <strong class="jxr_keyword">this</strong>.zk=<strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="152" href="#152">152</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Cannot connect to Zookeeper"</span>);
+<a class="jxr_linenumber" name="153" href="#153">153</a> }
<a class="jxr_linenumber" name="154" href="#154">154</a>
-<a class="jxr_linenumber" name="155" href="#155">155</a> <em class="jxr_comment">//wait 3 seconds to connect</em>
-<a class="jxr_linenumber" name="156" href="#156">156</a> <strong class="jxr_keyword">int</strong> retries=0;
-<a class="jxr_linenumber" name="157" href="#157">157</a> <strong class="jxr_keyword">while</strong>(<strong class="jxr_keyword">this</strong>.zk.getState() != ZooKeeper.States.CONNECTED) {
-<a class="jxr_linenumber" name="158" href="#158">158</a> LOG.debug(<span class="jxr_string">"Zookeeper.State="</span> + <strong class="jxr_keyword">this</strong>.zk.getState());
-<a class="jxr_linenumber" name="159" href="#159">159</a> <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="160" href="#160">160</a> Thread.sleep(1000L);<em class="jxr_comment">//1 second</em>
-<a class="jxr_linenumber" name="161" href="#161">161</a> retries++;
-<a class="jxr_linenumber" name="162" href="#162">162</a> } <strong class="jxr_keyword">catch</strong> (InterruptedException ie) {}
-<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>(retries > 3)
-<a class="jxr_linenumber" name="165" href="#165">165</a> <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="166" href="#166">166</a> }
-<a class="jxr_linenumber" name="167" href="#167">167</a>
-<a class="jxr_linenumber" name="168" href="#168">168</a> <strong class="jxr_keyword">if</strong>(<strong class="jxr_keyword">this</strong>.zk.getState() != ZooKeeper.States.CONNECTED) {
-<a class="jxr_linenumber" name="169" href="#169">169</a> <strong class="jxr_keyword">this</strong>.zk.close();
-<a class="jxr_linenumber" name="170" href="#170">170</a> LOG.error(<span class="jxr_string">"Zookeeper.State ["</span> + <strong class="jxr_keyword">this</strong>.zk.getState() + <span class="jxr_string">"]"</span>);
-<a class="jxr_linenumber" name="171" href="#171">171</a> <strong class="jxr_keyword">this</strong>.zk=<strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="172" href="#172">172</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Cannot connect to Zookeeper"</span>);
-<a class="jxr_linenumber" name="173" href="#173">173</a> }
-<a class="jxr_linenumber" name="174" href="#174">174</a>
-<a class="jxr_linenumber" name="175" href="#175">175</a> LOG.debug(<span class="jxr_string">"Zookeeper.State="</span> + <strong class="jxr_keyword">this</strong>.zk.getState());
-<a class="jxr_linenumber" name="176" href="#176">176</a> connectedSignal.await();
-<a class="jxr_linenumber" name="177" href="#177">177</a> }
-<a class="jxr_linenumber" name="178" href="#178">178</a> }
-<a class="jxr_linenumber" name="179" href="#179">179</a>
-<a class="jxr_linenumber" name="180" href="#180">180</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> resetZk() <strong class="jxr_keyword">throws</strong> IOException, InterruptedException {
-<a class="jxr_linenumber" name="181" href="#181">181</a> zk = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="182" href="#182">182</a> }
-<a class="jxr_linenumber" name="183" href="#183">183</a>
-<a class="jxr_linenumber" name="184" href="#184">184</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> close() <strong class="jxr_keyword">throws</strong> InterruptedException {
-<a class="jxr_linenumber" name="185" href="#185">185</a> <strong class="jxr_keyword">if</strong>(zk != <strong class="jxr_keyword">null</strong>)
-<a class="jxr_linenumber" name="186" href="#186">186</a> zk.close();
-<a class="jxr_linenumber" name="187" href="#187">187</a> <strong class="jxr_keyword">this</strong>.sessionTimeout = 0;
-<a class="jxr_linenumber" name="188" href="#188">188</a> zk = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="189" href="#189">189</a> }
-<a class="jxr_linenumber" name="190" href="#190">190</a>
-<a class="jxr_linenumber" name="191" href="#191">191</a> <strong class="jxr_keyword">public</strong> ZooKeeper getZk() {
-<a class="jxr_linenumber" name="192" href="#192">192</a> <strong class="jxr_keyword">return</strong> zk;
+<a class="jxr_linenumber" name="155" href="#155">155</a> LOG.debug(<span class="jxr_string">"Zookeeper.State="</span> + <strong class="jxr_keyword">this</strong>.zk.getState());
+<a class="jxr_linenumber" name="156" href="#156">156</a> connectedSignal.await();
+<a class="jxr_linenumber" name="157" href="#157">157</a> }
+<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> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> resetZk() <strong class="jxr_keyword">throws</strong> IOException, InterruptedException {
+<a class="jxr_linenumber" name="161" href="#161">161</a> zk = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="162" href="#162">162</a> }
+<a class="jxr_linenumber" name="163" href="#163">163</a>
+<a class="jxr_linenumber" name="164" href="#164">164</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> close() <strong class="jxr_keyword">throws</strong> InterruptedException {
+<a class="jxr_linenumber" name="165" href="#165">165</a> <strong class="jxr_keyword">if</strong>(zk != <strong class="jxr_keyword">null</strong>)
+<a class="jxr_linenumber" name="166" href="#166">166</a> zk.close();
+<a class="jxr_linenumber" name="167" href="#167">167</a> <strong class="jxr_keyword">this</strong>.sessionTimeout = 0;
+<a class="jxr_linenumber" name="168" href="#168">168</a> zk = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="169" href="#169">169</a> }
+<a class="jxr_linenumber" name="170" href="#170">170</a>
+<a class="jxr_linenumber" name="171" href="#171">171</a> <strong class="jxr_keyword">public</strong> ZooKeeper getZk() {
+<a class="jxr_linenumber" name="172" href="#172">172</a> <strong class="jxr_keyword">return</strong> zk;
+<a class="jxr_linenumber" name="173" href="#173">173</a> }
+<a class="jxr_linenumber" name="174" href="#174">174</a>
+<a class="jxr_linenumber" name="175" href="#175">175</a> @Override
+<a class="jxr_linenumber" name="176" href="#176">176</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> process(WatchedEvent event) {
+<a class="jxr_linenumber" name="177" href="#177">177</a> <strong class="jxr_keyword">if</strong>(event.getState() == Watcher.Event.KeeperState.SyncConnected) {
+<a class="jxr_linenumber" name="178" href="#178">178</a> connectedSignal.countDown();
+<a class="jxr_linenumber" name="179" href="#179">179</a> }
+<a class="jxr_linenumber" name="180" href="#180">180</a> }
+<a class="jxr_linenumber" name="181" href="#181">181</a>
+<a class="jxr_linenumber" name="182" href="#182">182</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> create(String path, String value, <strong class="jxr_keyword">boolean</strong> ephemeral)
+<a class="jxr_linenumber" name="183" href="#183">183</a> <strong class="jxr_keyword">throws</strong> KeeperException, InterruptedException {
+<a class="jxr_linenumber" name="184" href="#184">184</a> Stat stat = zk.exists(path,false);
+<a class="jxr_linenumber" name="185" href="#185">185</a> <strong class="jxr_keyword">if</strong>(stat==<strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="186" href="#186">186</a> <strong class="jxr_keyword">if</strong>(ephemeral==<strong class="jxr_keyword">true</strong>)
+<a class="jxr_linenumber" name="187" href="#187">187</a> zk.create(path,value.getBytes(CHARSET),ZooDefs.Ids.OPEN_ACL_UNSAFE,CreateMode.EPHEMERAL);
+<a class="jxr_linenumber" name="188" href="#188">188</a> <strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="189" href="#189">189</a> zk.create(path,value.getBytes(CHARSET),ZooDefs.Ids.OPEN_ACL_UNSAFE,CreateMode.PERSISTENT);
+<a class="jxr_linenumber" name="190" href="#190">190</a> } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="191" href="#191">191</a> zk.setData(path,value.getBytes(CHARSET), -1);
+<a class="jxr_linenumber" name="192" href="#192">192</a> }
<a class="jxr_linenumber" name="193" href="#193">193</a> }
<a class="jxr_linenumber" name="194" href="#194">194</a>
-<a class="jxr_linenumber" name="195" href="#195">195</a> @Override
-<a class="jxr_linenumber" name="196" href="#196">196</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> process(WatchedEvent event) {
-<a class="jxr_linenumber" name="197" href="#197">197</a> <strong class="jxr_keyword">if</strong>(event.getState() == Watcher.Event.KeeperState.SyncConnected) {
-<a class="jxr_linenumber" name="198" href="#198">198</a> connectedSignal.countDown();
-<a class="jxr_linenumber" name="199" href="#199">199</a> }
-<a class="jxr_linenumber" name="200" href="#200">200</a> }
-<a class="jxr_linenumber" name="201" href="#201">201</a>
-<a class="jxr_linenumber" name="202" href="#202">202</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> create(String path, String value, <strong class="jxr_keyword">boolean</strong> ephemeral)
-<a class="jxr_linenumber" name="203" href="#203">203</a> <strong class="jxr_keyword">throws</strong> KeeperException, InterruptedException {
-<a class="jxr_linenumber" name="204" href="#204">204</a> Stat stat = zk.exists(path,false);
-<a class="jxr_linenumber" name="205" href="#205">205</a> <strong class="jxr_keyword">if</strong>(stat==<strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="206" href="#206">206</a> <strong class="jxr_keyword">if</strong>(ephemeral==<strong class="jxr_keyword">true</strong>)
-<a class="jxr_linenumber" name="207" href="#207">207</a> zk.create(path,value.getBytes(CHARSET),ZooDefs.Ids.OPEN_ACL_UNSAFE,CreateMode.EPHEMERAL);
-<a class="jxr_linenumber" name="208" href="#208">208</a> <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="209" href="#209">209</a> zk.create(path,value.getBytes(CHARSET),ZooDefs.Ids.OPEN_ACL_UNSAFE,CreateMode.PERSISTENT);
-<a class="jxr_linenumber" name="210" href="#210">210</a> } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="211" href="#211">211</a> zk.setData(path,value.getBytes(CHARSET), -1);
-<a class="jxr_linenumber" name="212" href="#212">212</a> }
-<a class="jxr_linenumber" name="213" href="#213">213</a> }
-<a class="jxr_linenumber" name="214" href="#214">214</a>
-<a class="jxr_linenumber" name="215" href="#215">215</a> <strong class="jxr_keyword">public</strong> String get(String path, Watcher watcher)
-<a class="jxr_linenumber" name="216" href="#216">216</a> <strong class="jxr_keyword">throws</strong> KeeperException, InterruptedException {
-<a class="jxr_linenumber" name="217" href="#217">217</a> byte[] data = zk.getData(path, watcher, <strong class="jxr_keyword">null</strong><em class="jxr_comment">/*<em class="jxr_comment">stat*/</em>);</em>
-<a class="jxr_linenumber" name="218" href="#218">218</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> String(data, CHARSET);
-<a class="jxr_linenumber" name="219" href="#219">219</a> }
-<a class="jxr_linenumber" name="220" href="#220">220</a>
-<a class="jxr_linenumber" name="221" href="#221">221</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="222" href="#222">222</a> <em class="jxr_javadoccomment"> * delete is an idempotent operation. Retry before throwing exception.</em>
-<a class="jxr_linenumber" name="223" href="#223">223</a> <em class="jxr_javadoccomment"> * This function will not throw NoNodeException if the path does not</em>
-<a class="jxr_linenumber" name="224" href="#224">224</a> <em class="jxr_javadoccomment"> * exist.</em>
-<a class="jxr_linenumber" name="225" href="#225">225</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="226" href="#226">226</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> delete(String path, <strong class="jxr_keyword">int</strong> version)
-<a class="jxr_linenumber" name="227" href="#227">227</a> <strong class="jxr_keyword">throws</strong> InterruptedException, KeeperException {
-<a class="jxr_linenumber" name="228" href="#228">228</a> RetryCounter retryCounter = retryCounterFactory.create();
-<a class="jxr_linenumber" name="229" href="#229">229</a> <strong class="jxr_keyword">boolean</strong> isRetry = false; <em class="jxr_comment">// False for first attempt, true for all retries.</em>
-<a class="jxr_linenumber" name="230" href="#230">230</a> <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
-<a class="jxr_linenumber" name="231" href="#231">231</a> <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="232" href="#232">232</a> zk.delete(path, version);
-<a class="jxr_linenumber" name="233" href="#233">233</a> <strong class="jxr_keyword">return</strong>;
-<a class="jxr_linenumber" name="234" href="#234">234</a> } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a class="jxr_linenumber" name="235" href="#235">235</a> <strong class="jxr_keyword">switch</strong> (e.code()) {
-<a class="jxr_linenumber" name="236" href="#236">236</a> <strong class="jxr_keyword">case</strong> NONODE:
-<a class="jxr_linenumber" name="237" href="#237">237</a> <strong class="jxr_keyword">if</strong> (isRetry) {
-<a class="jxr_linenumber" name="238" href="#238">238</a> LOG.info(<span class="jxr_string">"Node "</span> + path + <span class="jxr_string">" already deleted. Assuming that a "</span> +
-<a class="jxr_linenumber" name="239" href="#239">239</a> <span class="jxr_string">"previous attempt succeeded."</span>);
-<a class="jxr_linenumber" name="240" href="#240">240</a> <strong class="jxr_keyword">return</strong>;
-<a class="jxr_linenumber" name="241" href="#241">241</a> }
-<a class="jxr_linenumber" name="242" href="#242">242</a> LOG.warn(<span class="jxr_string">"Node "</span> + path + <span class="jxr_string">" already deleted, and this is not a "</span> +
-<a class="jxr_linenumber" name="243" href="#243">243</a> <span class="jxr_string">"retry"</span>);
-<a class="jxr_linenumber" name="244" href="#244">244</a> <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="245" href="#245">245</a>
-<a class="jxr_linenumber" name="246" href="#246">246</a> <strong class="jxr_keyword">case</strong> CONNECTIONLOSS:
-<a class="jxr_linenumber" name="247" href="#247">247</a> <strong class="jxr_keyword">case</strong> SESSIONEXPIRED:
-<a class="jxr_linenumber" name="248" href="#248">248</a> <strong class="jxr_keyword">case</strong> OPERATIONTIMEOUT:
-<a class="jxr_linenumber" name="249" href="#249">249</a> retryOrThrow(retryCounter, e, <span class="jxr_string">"delete"</span>);
-<a class="jxr_linenumber" name="250" href="#250">250</a> <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="251" href="#251">251</a>
-<a class="jxr_linenumber" name="252" href="#252">252</a> <strong class="jxr_keyword">default</strong>:
-<a class="jxr_linenumber" name="253" href="#253">253</a> <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="254" href="#254">254</a> }
-<a class="jxr_linenumber" name="255" href="#255">255</a> }
-<a class="jxr_linenumber" name="256" href="#256">256</a> retryCounter.sleepUntilNextRetry();
-<a class="jxr_linenumber" name="257" href="#257">257</a> retryCounter.useRetry();
-<a class="jxr_linenumber" name="258" href="#258">258</a> isRetry = <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="259" href="#259">259</a> }
-<a class="jxr_linenumber" name="260" href="#260">260</a> }
-<a class="jxr_linenumber" name="261" href="#261">261</a>
-<a class="jxr_linenumber" name="262" href="#262">262</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="263" href="#263">263</a> <em class="jxr_javadoccomment"> * exists is an idempotent operation. Retry before throwing exception</em>
-<a class="jxr_linenumber" name="264" href="#264">264</a> <em class="jxr_javadoccomment"> * @return A Stat instance</em>
-<a class="jxr_linenumber" name="265" href="#265">265</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="266" href="#266">266</a> <strong class="jxr_keyword">public</strong> Stat exists(String path, Watcher watcher)
-<a class="jxr_linenumber" name="267" href="#267">267</a> <strong class="jxr_keyword">throws</strong> KeeperException, InterruptedException {
-<a class="jxr_linenumber" name="268" href="#268">268</a> RetryCounter retryCounter = retryCounterFactory.create();
-<a class="jxr_linenumber" name="269" href="#269">269</a> <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
-<a class="jxr_linenumber" name="270" href="#270">270</a> <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="271" href="#271">271</a> <strong class="jxr_keyword">return</strong> zk.exists(path, watcher);
-<a class="jxr_linenumber" name="272" href="#272">272</a> } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a class="jxr_linenumber" name="273" href="#273">273</a> <strong class="jxr_keyword">switch</strong> (e.code()) {
-<a class="jxr_linenumber" name="274" href="#274">274</a> <strong class="jxr_keyword">case</strong> CONNECTIONLOSS:
-<a class="jxr_linenumber" name="275" href="#275">275</a> <strong class="jxr_keyword">case</strong> SESSIONEXPIRED:
-<a class="jxr_linenumber" name="276" href="#276">276</a> <strong class="jxr_keyword">case</strong> OPERATIONTIMEOUT:
-<a class="jxr_linenumber" name="277" href="#277">277</a> retryOrThrow(retryCounter, e, <span class="jxr_string">"exists"</span>);
-<a class="jxr_linenumber" name="278" href="#278">278</a> <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="279" href="#279">279</a>
-<a class="jxr_linenumber" name="280" href="#280">280</a> <strong class="jxr_keyword">default</strong>:
-<a class="jxr_linenumber" name="281" href="#281">281</a> <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="282" href="#282">282</a> }
-<a class="jxr_linenumber" name="283" href="#283">283</a> }
-<a class="jxr_linenumber" name="284" href="#284">284</a> retryCounter.sleepUntilNextRetry();
-<a class="jxr_linenumber" name="285" href="#285">285</a> retryCounter.useRetry();
-<a class="jxr_linenumber" name="286" href="#286">286</a> }
-<a class="jxr_linenumber" name="287" href="#287">287</a> }
-<a class="jxr_linenumber" name="288" href="#288">288</a>
-<a class="jxr_linenumber" name="289" href="#289">289</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="290" href="#290">290</a> <em class="jxr_javadoccomment"> * exists is an idempotent operation. Retry before throwing exception</em>
-<a class="jxr_linenumber" name="291" href="#291">291</a> <em class="jxr_javadoccomment"> * @return A Stat instance</em>
-<a class="jxr_linenumber" name="292" href="#292">292</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="293" href="#293">293</a> <strong class="jxr_keyword">public</strong> Stat exists(String path, <strong class="jxr_keyword">boolean</strong> watch)
-<a class="jxr_linenumber" name="294" href="#294">294</a> <strong class="jxr_keyword">throws</strong> KeeperException, InterruptedException {
-<a class="jxr_linenumber" name="295" href="#295">295</a> RetryCounter retryCounter = retryCounterFactory.create();
-<a class="jxr_linenumber" name="296" href="#296">296</a> <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
-<a class="jxr_linenumber" name="297" href="#297">297</a> <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="298" href="#298">298</a> <strong class="jxr_keyword">return</strong> zk.exists(path, watch);
-<a class="jxr_linenumber" name="299" href="#299">299</a> } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a class="jxr_linenumber" name="300" href="#300">300</a> <strong class="jxr_keyword">switch</strong> (e.code()) {
-<a class="jxr_linenumber" name="301" href="#301">301</a> <strong class="jxr_keyword">case</strong> CONNECTIONLOSS:
-<a class="jxr_linenumber" name="302" href="#302">302</a> <strong class="jxr_keyword">case</strong> SESSIONEXPIRED:
-<a class="jxr_linenumber" name="303" href="#303">303</a> <strong class="jxr_keyword">case</strong> OPERATIONTIMEOUT:
-<a class="jxr_linenumber" name="304" href="#304">304</a> retryOrThrow(retryCounter, e, <span class="jxr_string">"exists"</span>);
-<a class="jxr_linenumber" name="305" href="#305">305</a> <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="306" href="#306">306</a>
-<a class="jxr_linenumber" name="307" href="#307">307</a> <strong class="jxr_keyword">default</strong>:
-<a class="jxr_linenumber" name="308" href="#308">308</a> <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="309" href="#309">309</a> }
-<a class="jxr_linenumber" name="310" href="#310">310</a> }
-<a class="jxr_linenumber" name="311" href="#311">311</a> retryCounter.sleepUntilNextRetry();
-<a class="jxr_linenumber" name="312" href="#312">312</a> retryCounter.useRetry();
-<a class="jxr_linenumber" name="313" href="#313">313</a> }
-<a class="jxr_linenumber" name="314" href="#314">314</a> }
-<a class="jxr_linenumber" name="315" href="#315">315</a>
-<a class="jxr_linenumber" name="316" href="#316">316</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> retryOrThrow(<a href="../../../../org/trafodion/dcs/util/RetryCounter.html">RetryCounter</a> retryCounter, KeeperException e,
-<a class="jxr_linenumber" name="317" href="#317">317</a> String opName) <strong class="jxr_keyword">throws</strong> KeeperException {
-<a class="jxr_linenumber" name="318" href="#318">318</a> LOG.warn(<span class="jxr_string">"Possibly transient ZooKeeper exception: "</span> + e);
-<a class="jxr_linenumber" name="319" href="#319">319</a> <strong class="jxr_keyword">if</strong> (!retryCounter.shouldRetry()) {
-<a class="jxr_linenumber" name="320" href="#320">320</a> LOG.error(<span class="jxr_string">"ZooKeeper "</span> + opName + <span class="jxr_string">" failed after "</span>
-<a class="jxr_linenumber" name="321" href="#321">321</a> + retryCounter.getMaxRetries() + <span class="jxr_string">" retries"</span>);
-<a class="jxr_linenumber" name="322" href="#322">322</a> <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="323" href="#323">323</a> }
-<a class="jxr_linenumber" name="324" href="#324">324</a> }
-<a class="jxr_linenumber" name="325" href="#325">325</a>
-<a class="jxr_linenumber" name="326" href="#326">326</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="327" href="#327">327</a> <em class="jxr_javadoccomment"> * getChildren is an idempotent operation. Retry before throwing exception</em>
-<a class="jxr_linenumber" name="328" href="#328">328</a> <em class="jxr_javadoccomment"> * @return List of children znodes</em>
-<a class="jxr_linenumber" name="329" href="#329">329</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="330" href="#330">330</a> <strong class="jxr_keyword">public</strong> List<String> getChildren(String path, Watcher watcher)
-<a class="jxr_linenumber" name="331" href="#331">331</a> <strong class="jxr_keyword">throws</strong> KeeperException, InterruptedException {
-<a class="jxr_linenumber" name="332" href="#332">332</a> RetryCounter retryCounter = retryCounterFactory.create();
-<a class="jxr_linenumber" name="333" href="#333">333</a> <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
-<a class="jxr_linenumber" name="334" href="#334">334</a> <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="335" href="#335">335</a> <strong class="jxr_keyword">return</strong> zk.getChildren(path, watcher);
-<a class="jxr_linenumber" name="336" href="#336">336</a> } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a class="jxr_linenumber" name="337" href="#337">337</a> <strong class="jxr_keyword">switch</strong> (e.code()) {
-<a class="jxr_linenumber" name="338" href="#338">338</a> <strong class="jxr_keyword">case</strong> CONNECTIONLOSS:
-<a class="jxr_linenumber" name="339" href="#339">339</a> <strong class="jxr_keyword">case</strong> SESSIONEXPIRED:
-<a class="jxr_linenumber" name="340" href="#340">340</a> <strong class="jxr_keyword">case</strong> OPERATIONTIMEOUT:
-<a class="jxr_linenumber" name="341" href="#341">341</a> retryOrThrow(retryCounter, e, <span class="jxr_string">"getChildren"</span>);
-<a class="jxr_linenumber" name="342" href="#342">342</a> <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="343" href="#343">343</a>
-<a class="jxr_linenumber" name="344" href="#344">344</a> <strong class="jxr_keyword">default</strong>:
-<a class="jxr_linenumber" name="345" href="#345">345</a> <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="346" href="#346">346</a> }
-<a class="jxr_linenumber" name="347" href="#347">347</a> }
-<a class="jxr_linenumber" name="348" href="#348">348</a> retryCounter.sleepUntilNextRetry();
-<a class="jxr_linenumber" name="349" href="#349">349</a> retryCounter.useRetry();
-<a class="jxr_linenumber" name="350" href="#350">350</a> }
-<a class="jxr_linenumber" name="351" href="#351">351</a> }
-<a class="jxr_linenumber" name="352" href="#352">352</a>
-<a class="jxr_linenumber" name="353" href="#353">353</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="354" href="#354">354</a> <em class="jxr_javadoccomment"> * getData is an idempotent operation. Retry before throwing exception</em>
-<a class="jxr_linenumber" name="355" href="#355">355</a> <em class="jxr_javadoccomment"> * @return Data</em>
-<a class="jxr_linenumber" name="356" href="#356">356</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="357" href="#357">357</a> <strong class="jxr_keyword">public</strong> byte[] getData(String path, Watcher watcher, Stat stat)
-<a class="jxr_linenumber" name="358" href="#358">358</a> <strong class="jxr_keyword">throws</strong> KeeperException, InterruptedException {
-<a class="jxr_linenumber" name="359" href="#359">359</a> RetryCounter retryCounter = retryCounterFactory.create();
-<a class="jxr_linenumber" name="360" href="#360">360</a> <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
-<a class="jxr_linenumber" name="361" href="#361">361</a> <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="362" href="#362">362</a> byte[] revData = zk.getData(path, watcher, stat);
-<a class="jxr_linenumber" name="363" href="#363">363</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.removeMetaData(revData);
-<a class="jxr_linenumber" name="364" href="#364">364</a> } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a class="jxr_linenumber" name="365" href="#365">365</a> <strong class="jxr_keyword">switch</strong> (e.code()) {
-<a class="jxr_linenumber" name="366" href="#366">366</a> <strong class="jxr_keyword">case</strong> CONNECTIONLOSS:
-<a class="jxr_linenumber" name="367" href="#367">367</a> <strong class="jxr_keyword">case</strong> SESSIONEXPIRED:
-<a class="jxr_linenumber" name="368" href="#368">368</a> <strong class="jxr_keyword">case</strong> OPERATIONTIMEOUT:
-<a class="jxr_linenumber" name="369" href="#369">369</a> retryOrThrow(retryCounter, e, <span class="jxr_string">"getData"</span>);
-<a class="jxr_linenumber" name="370" href="#370">370</a> <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="371" href="#371">371</a>
-<a class="jxr_linenumber" name="372" href="#372">372</a> <strong class="jxr_keyword">default</strong>:
-<a class="jxr_linenumber" name="373" href="#373">373</a> <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="374" href="#374">374</a> }
-<a class="jxr_linenumber" name="375" href="#375">375</a> }
-<a class="jxr_linenumber" name="376" href="#376">376</a> retryCounter.sleepUntilNextRetry();
-<a class="jxr_linenumber" name="377" href="#377">377</a> retryCounter.useRetry();
-<a class="jxr_linenumber" name="378" href="#378">378</a> }
-<a class="jxr_linenumber" name="379" href="#379">379</a> }
-<a class="jxr_linenumber" name="380" href="#380">380</a>
-<a class="jxr_linenumber" name="381" href="#381">381</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="382" href="#382">382</a> <em class="jxr_javadoccomment"> * getData is an idemnpotent operation. Retry before throwing exception</em>
-<a class="jxr_linenumber" name="383" href="#383">383</a> <em class="jxr_javadoccomment"> * @return Data</em>
-<a class="jxr_linenumber" name="384" href="#384">384</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="385" href="#385">385</a> <strong class="jxr_keyword">public</strong> byte[] getData(String path, <strong class="jxr_keyword">boolean</strong> watch, Stat stat)
-<a class="jxr_linenumber" name="386" href="#386">386</a> <strong class="jxr_keyword">throws</strong> KeeperException, InterruptedException {
-<a class="jxr_linenumber" name="387" href="#387">387</a> RetryCounter retryCounter = retryCounterFactory.create();
-<a class="jxr_linenumber" name="388" href="#388">388</a> <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
-<a class="jxr_linenumber" name="389" href="#389">389</a> <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="390" href="#390">390</a> byte[] revData = zk.getData(path, watch, stat);
-<a class="jxr_linenumber" name="391" href="#391">391</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.removeMetaData(revData);
-<a class="jxr_linenumber" name="392" href="#392">392</a> } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a class="jxr_linenumber" name="393" href="#393">393</a> <strong class="jxr_keyword">switch</strong> (e.code()) {
-<a class="jxr_linenumber" name="394" href="#394">394</a> <strong class="jxr_keyword">case</strong> CONNECTIONLOSS:
-<a class="jxr_linenumber" name="395" href="#395">395</a> <strong class="jxr_keyword">case</strong> SESSIONEXPIRED:
-<a class="jxr_linenumber" name="396" href="#396">396</a> <strong class="jxr_keyword">case</strong> OPERATIONTIMEOUT:
-<a class="jxr_linenumber" name="397" href="#397">397</a> retryOrThrow(retryCounter, e, <span class="jxr_string">"getData"</span>);
-<a class="jxr_linenumber" name="398" href="#398">398</a> <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="399" href="#399">399</a>
-<a class="jxr_linenumber" name="400" href="#400">400</a> <strong class="jxr_keyword">default</strong>:
-<a class="jxr_linenumber" name="401" href="#401">401</a> <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="402" href="#402">402</a> }
-<a class="jxr_linenumber" name="403" href="#403">403</a> }
-<a class="jxr_linenumber" name="404" href="#404">404</a> retryCounter.sleepUntilNextRetry();
-<a class="jxr_linenumber" name="405" href="#405">405</a> retryCounter.useRetry();
-<a class="jxr_linenumber" name="406" href="#406">406</a> }
-<a class="jxr_linenumber" name="407" href="#407">407</a> }
-<a class="jxr_linenumber" name="408" href="#408">408</a>
-<a class="jxr_linenumber" name="409" href="#409">409</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="410" href="#410">410</a> <em class="jxr_javadoccomment"> * setData is NOT an idempotent operation. Retry may cause BadVersion Exception</em>
-<a class="jxr_linenumber" name="411" href="#411">411</a> <em class="jxr_javadoccomment"> * Adding an identifier field into the data to check whether </em>
-<a class="jxr_linenumber" name="412" href="#412">412</a> <em class="jxr_javadoccomment"> * badversion is caused by the result of previous correctly setData</em>
-<a class="jxr_linenumber" name="413" href="#413">413</a> <em class="jxr_javadoccomment"> * @return Stat instance</em>
-<a class="jxr_linenumber" name="414" href="#414">414</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="415" href="#415">415</a> <strong class="jxr_keyword">public</strong> Stat setData(String path, byte[] data, <strong class="jxr_keyword">int</strong> version)
-<a class="jxr_linenumber" name="416" href="#416">416</a> <strong class="jxr_keyword">throws</strong> KeeperException, InterruptedException {
-<a class="jxr_linenumber" name="417" href="#417">417</a> RetryCounter retryCounter = retryCounterFactory.create();
-<a class="jxr_linenumber" name="418" href="#418">418</a> <em class="jxr_comment">// byte[] newData = appendMetaData(data);</em>
-<a class="jxr_linenumber" name="419" href="#419">419</a> byte[] newData = data;
-<a class="jxr_linenumber" name="420" href="#420">420</a> <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
-<a class="jxr_linenumber" name="421" href="#421">421</a> <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="422" href="#422">422</a> <strong class="jxr_keyword">return</strong> zk.setData(path, newData, version);
-<a class="jxr_linenumber" name="423" href="#423">423</a> } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a class="jxr_linenumber" name="424" href="#424">424</a> <strong class="jxr_keyword">switch</strong> (e.code()) {
-<a class="jxr_linenumber" name="425" href="#425">425</a> <strong class="jxr_keyword">case</strong> CONNECTIONLOSS:
-<a class="jxr_linenumber" name="426" href="#426">426</a> <strong class="jxr_keyword">case</strong> SESSIONEXPIRED:
-<a class="jxr_linenumber" name="427" href="#427">427</a> <strong class="jxr_keyword">case</strong> OPERATIONTIMEOUT:
-<a class="jxr_linenumber" name="428" href="#428">428</a> retryOrThrow(retryCounter, e, <span class="jxr_string">"setData"</span>);
-<a class="jxr_linenumber" name="429" href="#429">429</a> <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="430" href="#430">430</a> <strong class="jxr_keyword">case</strong> BADVERSION:
-<a class="jxr_linenumber" name="431" href="#431">431</a> <em class="jxr_comment">// try to verify whether the previous setData success or not</em>
-<a class="jxr_linenumber" name="432" href="#432">432</a> <strong class="jxr_keyword">try</strong>{
-<a class="jxr_linenumber" name="433" href="#433">433</a> Stat stat = <strong class="jxr_keyword">new</strong> Stat();
-<a class="jxr_linenumber" name="434" href="#434">434</a> byte[] revData = zk.getData(path, false, stat);
-<a class="jxr_linenumber" name="435" href="#435">435</a> <strong class="jxr_keyword">if</strong> (Bytes.equals(revData, newData)) {
-<a class="jxr_linenumber" name="436" href="#436">436</a> <em class="jxr_comment">// the bad version is caused by previous successful setData</em>
-<a class="jxr_linenumber" name="437" href="#437">437</a> <strong class="jxr_keyword">return</strong> stat;
-<a class="jxr_linenumber" name="438" href="#438">438</a> }
-<a class="jxr_linenumber" name="439" href="#439">439</a> } <strong class="jxr_keyword">catch</strong>(KeeperException keeperException){
-<a class="jxr_linenumber" name="440" href="#440">440</a> <em class="jxr_comment">// the ZK is not reliable at this moment. just throwing exception</em>
-<a class="jxr_linenumber" name="441" href="#441">441</a> <strong class="jxr_keyword">throw</strong> keeperException;
-<a class="jxr_linenumber" name="442" href="#442">442</a> }
-<a class="jxr_linenumber" name="443" href="#443">443</a> <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="444" href="#444">444</a>
-<a class="jxr_linenumber" name="445" href="#445">445</a> <em class="jxr_comment">// throw other exceptions and verified bad version exceptions</em>
-<a class="jxr_linenumber" name="446" href="#446">446</a> <strong class="jxr_keyword">default</strong>:
-<a class="jxr_linenumber" name="447" href="#447">447</a> <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="448" href="#448">448</a> }
-<a class="jxr_linenumber" name="449" href="#449">449</a> }
-<a class="jxr_linenumber" name="450" href="#450">450</a> retryCounter.sleepUntilNextRetry();
-<a class="jxr_linenumber" name="451" href="#451">451</a> retryCounter.useRetry();
-<a class="jxr_linenumber" name="452" href="#452">452</a> }
-<a class="jxr_linenumber" name="453" href="#453">453</a> }
-<a class="jxr_linenumber" name="454" href="#454">454</a>
-<a class="jxr_linenumber" name="455" href="#455">455</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="456" href="#456">456</a> <em class="jxr_javadoccomment"> * <p></em>
-<a class="jxr_linenumber" name="457" href="#457">457</a> <em class="jxr_javadoccomment"> * NONSEQUENTIAL create is idempotent operation. </em>
-<a class="jxr_linenumber" name="458" href="#458">458</a> <em class="jxr_javadoccomment"> * Retry before throwing exceptions.</em>
-<a class="jxr_linenumber" name="459" href="#459">459</a> <em class="jxr_javadoccomment"> * But this function will not throw the NodeExist exception back to the</em>
-<a class="jxr_linenumber" name="460" href="#460">460</a> <em class="jxr_javadoccomment"> * application.</em>
-<a class="jxr_linenumber" name="461" href="#461">461</a> <em class="jxr_javadoccomment"> * </p></em>
-<a class="jxr_linenumber" name="462" href="#462">462</a> <em class="jxr_javadoccomment"> * <p></em>
-<a class="jxr_linenumber" name="463" href="#463">463</a> <em class="jxr_javadoccomment"> * But SEQUENTIAL is NOT idempotent operation. It is necessary to add </em>
-<a class="jxr_linenumber" name="464" href="#464">464</a> <em class="jxr_javadoccomment"> * identifier to the path to verify, whether the previous one is successful </em>
-<a class="jxr_linenumber" name="465" href="#465">465</a> <em class="jxr_javadoccomment"> * or not.</em>
-<a class="jxr_linenumber" name="466" href="#466">466</a> <em class="jxr_javadoccomment"> * </p></em>
-<a class="jxr_linenumber" name="467" href="#467">467</a> <em class="jxr_javadoccomment"> * </em>
-<a class="jxr_linenumber" name="468" href="#468">468</a> <em class="jxr_javadoccomment"> * @return Path</em>
-<a class="jxr_linenumber" name="469" href="#469">469</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="470" href="#470">470</a> <strong class="jxr_keyword">public</strong> String create(String path, byte[] data, List<ACL> acl,
-<a class="jxr_linenumber" name="471" href="#471">471</a> CreateMode createMode)
-<a class="jxr_linenumber" name="472" href="#472">472</a> <strong class="jxr_keyword">throws</strong> KeeperException, InterruptedException {
-<a class="jxr_linenumber" name="473" href="#473">473</a> <em class="jxr_comment">// byte[] newData = appendMetaData(data);</em>
-<a class="jxr_linenumber" name="474" href="#474">474</a> byte[] newData = data;
-<a class="jxr_linenumber" name="475" href="#475">475</a> <strong class="jxr_keyword">switch</strong> (createMode) {
-<a class="jxr_linenumber" name="476" href="#476">476</a> <strong class="jxr_keyword">case</strong> EPHEMERAL:
-<a class="jxr_linenumber" name="477" href="#477">477</a> <strong class="jxr_keyword">case</strong> PERSISTENT:
-<a class="jxr_linenumber" name="478" href="#478">478</a> <strong class="jxr_keyword">return</strong> createNonSequential(path, newData, acl, createMode);
-<a class="jxr_linenumber" name="479" href="#479">479</a>
-<a class="jxr_linenumber" name="480" href="#480">480</a> <strong class="jxr_keyword">case</strong> EPHEMERAL_SEQUENTIAL:
-<a class="jxr_linenumber" name="481" href="#481">481</a> <strong class="jxr_keyword">case</strong> PERSISTENT_SEQUENTIAL:
-<a class="jxr_linenumber" name="482" href="#482">482</a> <strong class="jxr_keyword">return</strong> createSequential(path, newData, acl, createMode);
-<a class="jxr_linenumber" name="483" href="#483">483</a>
-<a class="jxr_linenumber" name="484" href="#484">484</a> <strong class="jxr_keyword">default</strong>:
-<a class="jxr_linenumber" name="485" href="#485">485</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Unrecognized CreateMode: "</span> +
-<a class="jxr_linenumber" name="486" href="#486">486</a> createMode);
-<a class="jxr_linenumber" name="487" href="#487">487</a> }
-<a class="jxr_linenumber" name="488" href="#488">488</a> }
-<a class="jxr_linenumber" name="489" href="#489">489</a>
-<a class="jxr_linenumber" name="490" href="#490">490</a> <strong class="jxr_keyword">private</strong> String createNonSequential(String path, byte[] data, List<ACL> acl,
-<a class="jxr_linenumber" name="491" href="#491">491</a> CreateMode createMode) <strong class="jxr_keyword">throws</strong> KeeperException, InterruptedException {
-<a class="jxr_linenumber" name="492" href="#492">492</a> RetryCounter retryCounter = retryCounterFactory.create();
-<a class="jxr_linenumber" name="493" href="#493">493</a> <strong class="jxr_keyword">boolean</strong> isRetry = false; <em class="jxr_comment">// False for first attempt, true for all retries.</em>
-<a class="jxr_linenumber" name="494" href="#494">494</a> <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
-<a class="jxr_linenumber" name="495" href="#495">495</a> <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="496" href="#496">496</a> <strong class="jxr_keyword">return</strong> zk.create(path, data, acl, createMode);
-<a class="jxr_linenumber" name="497" href="#497">497</a> } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a class="jxr_linenumber" name="498" href="#498">498</a> <strong class="jxr_keyword">switch</strong> (e.code()) {
-<a class="jxr_linenumber" name="499" href="#499">499</a> <strong class="jxr_keyword">case</strong> NODEEXISTS:
-<a class="jxr_linenumber" name="500" href="#500">500</a> <strong class="jxr_keyword">if</strong> (isRetry) {
-<a class="jxr_linenumber" name="501" href="#501">501</a> <em class="jxr_comment">// If the connection was lost, there is still a possibility that</em>
-<a class="jxr_linenumber" name="502" href="#502">502</a> <em class="jxr_comment">// we have successfully created the node at our previous attempt,</em>
-<a class="jxr_linenumber" name="503" href="#503">503</a> <em class="jxr_comment">// so we read the node and compare. </em>
-<a class="jxr_linenumber" name="504" href="#504">504</a> byte[] currentData = zk.getData(path, false, <strong class="jxr_keyword">null</strong>);
-<a class="jxr_linenumber" name="505" href="#505">505</a> <strong class="jxr_keyword">if</strong> (currentData != <strong class="jxr_keyword">null</strong> &&
-<a class="jxr_linenumber" name="506" href="#506">506</a> Bytes.compareTo(currentData, data) == 0) {
-<a class="jxr_linenumber" name="507" href="#507">507</a> <em class="jxr_comment">// We successfully created a non-sequential node</em>
-<a class="jxr_linenumber" name="508" href="#508">508</a> <strong class="jxr_keyword">return</strong> path;
-<a class="jxr_linenumber" name="509" href="#509">509</a> }
-<a class="jxr_linenumber" name="510" href="#510">510</a> LOG.error(<span class="jxr_string">"Node "</span> + path + <span class="jxr_string">" already exists with "</span> +
-<a class="jxr_linenumber" name="511" href="#511">511</a> Bytes.toStringBinary(currentData) + <span class="jxr_string">", could not write "</span> +
-<a class="jxr_linenumber" name="512" href="#512">512</a> Bytes.toStringBinary(data));
-<a class="jxr_linenumber" name="513" href="#513">513</a> <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="514" href="#514">514</a> }
-<a class="jxr_linenumber" name="515" href="#515">515</a> LOG.info(<span class="jxr_string">"Node "</span> + path + <span class="jxr_string">" already exists and this is not a "</span> +
-<a class="jxr_linenumber" name="516" href="#516">516</a> <span class="jxr_string">"retry"</span>);
-<a class="jxr_linenumber" name="517" href="#517">517</a> <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="518" href="#518">518</a>
-<a class="jxr_linenumber" name="519" href="#519">519</a> <strong class="jxr_keyword">case</strong> CONNECTIONLOSS:
-<a class="jxr_linenumber" name="520" href="#520">520</a> <strong class="jxr_keyword">case</strong> SESSIONEXPIRED:
-<a class="jxr_linenumber" name="521" href="#521">521</a> <strong class="jxr_keyword">case</strong> OPERATIONTIMEOUT:
-<a class="jxr_linenumber" name="522" href="#522">522</a> retryOrThrow(retryCounter, e, <span class="jxr_string">"create"</span>);
-<a class="jxr_linenumber" name="523" href="#523">523</a> <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="524" href="#524">524</a>
-<a class="jxr_linenumber" name="525" href="#525">525</a> <strong class="jxr_keyword">default</strong>:
-<a class="jxr_linenumber" name="526" href="#526">526</a> <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="527" href="#527">527</a> }
-<a class="jxr_linenumber" name="528" href="#528">528</a> }
-<a class="jxr_linenumber" name="529" href="#529">529</a> retryCounter.sleepUntilNextRetry();
-<a class="jxr_linenumber" name="530" href="#530">530</a> retryCounter.useRetry();
-<a class="jxr_linenumber" name="531" href="#531">531</a> isRetry = <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="532" href="#532">532</a> }
-<a class="jxr_linenumber" name="533" href="#533">533</a> }
-<a class="jxr_linenumber" name="534" href="#534">534</a>
-<a class="jxr_linenumber" name="535" href="#535">535</a> <strong class="jxr_keyword">private</strong> String createSequential(String path, byte[] data,
-<a class="jxr_linenumber" name="536" href="#536">536</a> List<ACL> acl, CreateMode createMode)
-<a class="jxr_linenumber" name="537" href="#537">537</a> <strong class="jxr_keyword">throws</strong> KeeperException, InterruptedException {
-<a class="jxr_linenumber" name="538" href="#538">538</a> RetryCounter retryCounter = retryCounterFactory.create();
-<a class="jxr_linenumber" name="539" href="#539">539</a> <strong class="jxr_keyword">boolean</strong> first = <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="540" href="#540">540</a> <em class="jxr_comment">//String newPath = path+this.identifier;</em>
-<a class="jxr_linenumber" name="541" href="#541">541</a> String newPath = path;
-<a class="jxr_linenumber" name="542" href="#542">542</a> <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
-<a class="jxr_linenumber" name="543" href="#543">543</a> <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="544" href="#544">544</a> <strong class="jxr_keyword">if</strong> (!first) {
-<a class="jxr_linenumber" name="545" href="#545">545</a> <em class="jxr_comment">// Check if we succeeded on a previous attempt</em>
-<a class="jxr_linenumber" name="546" href="#546">546</a> String previousResult = findPreviousSequentialNode(newPath);
-<a class="jxr_linenumber" name="547" href="#547">547</a> <strong class="jxr_keyword">if</strong> (previousResult != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="548" href="#548">548</a> <strong class="jxr_keyword">return</strong> previousResult;
-<a class="jxr_linenumber" name="549" href="#549">549</a> }
-<a class="jxr_linenumber" name="550" href="#550">550</a> }
-<a class="jxr_linenumber" name="551" href="#551">551</a> first = false;
-<a class="jxr_linenumber" name="552" href="#552">552</a> <strong class="jxr_keyword">return</strong> zk.create(newPath, data, acl, createMode);
-<a class="jxr_linenumber" name="553" href="#553">553</a> } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a class="jxr_linenumber" name="554" href="#554">554</a> <strong class="jxr_keyword">switch</strong> (e.code()) {
-<a class="jxr_linenumber" name="555" href="#555">555</a> <strong class="jxr_keyword">case</s
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