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Posted to commits@helix.apache.org by ka...@apache.org on 2013/10/17 23:43:20 UTC
svn commit: r1533269 [26/27] - in /incubator/helix/site-content: ./
apidocs/assets/ apidocs/reference/ apidocs/reference/org/apache/helix/
apidocs/reference/org/apache/helix/agent/
apidocs/reference/org/apache/helix/alerts/ apidocs/reference/org/apache...
Modified: incubator/helix/site-content/xref/org/apache/helix/model/IdealState.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref/org/apache/helix/model/IdealState.html?rev=1533269&r1=1533268&r2=1533269&view=diff
==============================================================================
--- incubator/helix/site-content/xref/org/apache/helix/model/IdealState.html (original)
+++ incubator/helix/site-content/xref/org/apache/helix/model/IdealState.html Thu Oct 17 21:43:06 2013
@@ -528,7 +528,28 @@
<a class="jxr_linenumber" name="518" href="#518">518</a> }
<a class="jxr_linenumber" name="519" href="#519">519</a> <strong class="jxr_keyword">return</strong> property;
<a class="jxr_linenumber" name="520" href="#520">520</a> }
-<a class="jxr_linenumber" name="521" href="#521">521</a> }
+<a class="jxr_linenumber" name="521" href="#521">521</a>
+<a class="jxr_linenumber" name="522" href="#522">522</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="523" href="#523">523</a> <em class="jxr_javadoccomment"> * Parse a RebalanceMode from a string. It can also understand IdealStateModeProperty values.</em>
+<a class="jxr_linenumber" name="524" href="#524">524</a> <em class="jxr_javadoccomment"> * @param mode string containing a RebalanceMode value</em>
+<a class="jxr_linenumber" name="525" href="#525">525</a> <em class="jxr_javadoccomment"> * @param defaultMode the mode to use if the string is not valid</em>
+<a class="jxr_linenumber" name="526" href="#526">526</a> <em class="jxr_javadoccomment"> * @return converted RebalanceMode value</em>
+<a class="jxr_linenumber" name="527" href="#527">527</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="528" href="#528">528</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/model/IdealState.html">RebalanceMode</a> rebalanceModeFromString(String mode, <a href="../../../../org/apache/helix/model/IdealState.html">RebalanceMode</a> defaultMode) {
+<a class="jxr_linenumber" name="529" href="#529">529</a> <a href="../../../../org/apache/helix/model/IdealState.html">RebalanceMode</a> rebalanceMode = defaultMode;
+<a class="jxr_linenumber" name="530" href="#530">530</a> <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="531" href="#531">531</a> rebalanceMode = RebalanceMode.valueOf(mode);
+<a class="jxr_linenumber" name="532" href="#532">532</a> } <strong class="jxr_keyword">catch</strong> (Exception rebalanceModeException) {
+<a class="jxr_linenumber" name="533" href="#533">533</a> <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="534" href="#534">534</a> <a href="../../../../org/apache/helix/model/IdealState.html">IdealStateModeProperty</a> oldMode = IdealStateModeProperty.valueOf(mode);
+<a class="jxr_linenumber" name="535" href="#535">535</a> rebalanceMode = normalizeRebalanceMode(oldMode);
+<a class="jxr_linenumber" name="536" href="#536">536</a> } <strong class="jxr_keyword">catch</strong> (Exception e) {
+<a class="jxr_linenumber" name="537" href="#537">537</a> logger.error(e);
+<a class="jxr_linenumber" name="538" href="#538">538</a> }
+<a class="jxr_linenumber" name="539" href="#539">539</a> }
+<a class="jxr_linenumber" name="540" href="#540">540</a> <strong class="jxr_keyword">return</strong> rebalanceMode;
+<a class="jxr_linenumber" name="541" href="#541">541</a> }
+<a class="jxr_linenumber" name="542" href="#542">542</a> }
</pre>
<hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body>
</html>
Modified: incubator/helix/site-content/xref/org/apache/helix/model/StateModelDefinition.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref/org/apache/helix/model/StateModelDefinition.html?rev=1533269&r1=1533268&r2=1533269&view=diff
==============================================================================
--- incubator/helix/site-content/xref/org/apache/helix/model/StateModelDefinition.html (original)
+++ incubator/helix/site-content/xref/org/apache/helix/model/StateModelDefinition.html Thu Oct 17 21:43:06 2013
@@ -41,7 +41,7 @@
<a class="jxr_linenumber" name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> org.apache.helix.HelixProperty;
<a class="jxr_linenumber" name="32" href="#32">32</a> <strong class="jxr_keyword">import</strong> org.apache.helix.ZNRecord;
<a class="jxr_linenumber" name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> org.apache.helix.model.builder.StateTransitionTableBuilder;
-<a class="jxr_linenumber" name="34" href="#34">34</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.Logger;
+<a class="jxr_linenumber" name="34" href="#34">34</a> <strong class="jxr_keyword">import</strong> org.apache.helix.model.util.StateModelDefinitionValidator;
<a class="jxr_linenumber" name="35" href="#35">35</a>
<a class="jxr_linenumber" name="36" href="#36">36</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * Describe the state model</em>
@@ -53,332 +53,329 @@
<a class="jxr_linenumber" name="43" href="#43">43</a> STATE_PRIORITY_LIST
<a class="jxr_linenumber" name="44" href="#44">44</a> }
<a class="jxr_linenumber" name="45" href="#45">45</a>
-<a class="jxr_linenumber" name="46" href="#46">46</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Logger _logger = Logger.getLogger(StateModelDefinition.<strong class="jxr_keyword">class</strong>.getName());
-<a class="jxr_linenumber" name="47" href="#47">47</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="48" href="#48">48</a> <em class="jxr_javadoccomment"> * state model's initial state</em>
-<a class="jxr_linenumber" name="49" href="#49">49</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="50" href="#50">50</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> String _initialState;
-<a class="jxr_linenumber" name="51" href="#51">51</a>
-<a class="jxr_linenumber" name="52" href="#52">52</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * State Names in priority order. Indicates the order in which states are</em>
-<a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * fulfilled</em>
-<a class="jxr_linenumber" name="55" href="#55">55</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="56" href="#56">56</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> List<String> _statesPriorityList;
-<a class="jxr_linenumber" name="57" href="#57">57</a>
-<a class="jxr_linenumber" name="58" href="#58">58</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="59" href="#59">59</a> <em class="jxr_javadoccomment"> * Specifies the number of instances for a given state <br></em>
-<a class="jxr_linenumber" name="60" href="#60">60</a> <em class="jxr_javadoccomment"> * -1 don't care, don't try to keep any resource in this state on any instance <br></em>
-<a class="jxr_linenumber" name="61" href="#61">61</a> <em class="jxr_javadoccomment"> * >0 any integer number greater than 0 specifies the number of instances</em>
-<a class="jxr_linenumber" name="62" href="#62">62</a> <em class="jxr_javadoccomment"> * needed to be in this state <br></em>
-<a class="jxr_linenumber" name="63" href="#63">63</a> <em class="jxr_javadoccomment"> * R all instances in the preference list can be in this state <br></em>
-<a class="jxr_linenumber" name="64" href="#64">64</a> <em class="jxr_javadoccomment"> * N all instances in the cluster will be put in this state.PreferenceList</em>
-<a class="jxr_linenumber" name="65" href="#65">65</a> <em class="jxr_javadoccomment"> * must be denoted as '*'</em>
-<a class="jxr_linenumber" name="66" href="#66">66</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="67" href="#67">67</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Map<String, String> _statesCountMap;
-<a class="jxr_linenumber" name="68" href="#68">68</a>
-<a class="jxr_linenumber" name="69" href="#69">69</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> List<String> _stateTransitionPriorityList;
-<a class="jxr_linenumber" name="70" href="#70">70</a>
-<a class="jxr_linenumber" name="71" href="#71">71</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="72" href="#72">72</a> <em class="jxr_javadoccomment"> * StateTransition which is used to find the nextState given StartState and</em>
-<a class="jxr_linenumber" name="73" href="#73">73</a> <em class="jxr_javadoccomment"> * FinalState</em>
-<a class="jxr_linenumber" name="74" href="#74">74</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="75" href="#75">75</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Map<String, Map<String, String>> _stateTransitionTable;
-<a class="jxr_linenumber" name="76" href="#76">76</a>
-<a class="jxr_linenumber" name="77" href="#77">77</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="78" href="#78">78</a> <em class="jxr_javadoccomment"> * Instantiate from a pre-populated record</em>
-<a class="jxr_linenumber" name="79" href="#79">79</a> <em class="jxr_javadoccomment"> * @param record ZNRecord representing a state model definition</em>
-<a class="jxr_linenumber" name="80" href="#80">80</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="81" href="#81">81</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/model/StateModelDefinition.html">StateModelDefinition</a>(<a href="../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record) {
-<a class="jxr_linenumber" name="82" href="#82">82</a> <strong class="jxr_keyword">super</strong>(record);
-<a class="jxr_linenumber" name="83" href="#83">83</a>
-<a class="jxr_linenumber" name="84" href="#84">84</a> _initialState = record.getSimpleField(StateModelDefinitionProperty.INITIAL_STATE.toString());
-<a class="jxr_linenumber" name="85" href="#85">85</a>
-<a class="jxr_linenumber" name="86" href="#86">86</a> <strong class="jxr_keyword">if</strong> (_initialState == <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="87" href="#87">87</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"initial-state for "</span> + record.getId() + <span class="jxr_string">" is null"</span>);
-<a class="jxr_linenumber" name="88" href="#88">88</a> }
-<a class="jxr_linenumber" name="89" href="#89">89</a>
-<a class="jxr_linenumber" name="90" href="#90">90</a> _statesPriorityList =
-<a class="jxr_linenumber" name="91" href="#91">91</a> record.getListField(StateModelDefinitionProperty.STATE_PRIORITY_LIST.toString());
-<a class="jxr_linenumber" name="92" href="#92">92</a> _stateTransitionPriorityList =
-<a class="jxr_linenumber" name="93" href="#93">93</a> record.getListField(StateModelDefinitionProperty.STATE_TRANSITION_PRIORITYLIST.toString());
-<a class="jxr_linenumber" name="94" href="#94">94</a> _stateTransitionTable = <strong class="jxr_keyword">new</strong> HashMap<String, Map<String, String>>();
-<a class="jxr_linenumber" name="95" href="#95">95</a> _statesCountMap = <strong class="jxr_keyword">new</strong> HashMap<String, String>();
-<a class="jxr_linenumber" name="96" href="#96">96</a> <strong class="jxr_keyword">if</strong> (_statesPriorityList != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="97" href="#97">97</a> <strong class="jxr_keyword">for</strong> (String state : _statesPriorityList) {
-<a class="jxr_linenumber" name="98" href="#98">98</a> Map<String, String> metaData = record.getMapField(state + <span class="jxr_string">".meta"</span>);
-<a class="jxr_linenumber" name="99" href="#99">99</a> <strong class="jxr_keyword">if</strong> (metaData != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="100" href="#100">100</a> <strong class="jxr_keyword">if</strong> (metaData.get(<span class="jxr_string">"count"</span>) != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="101" href="#101">101</a> _statesCountMap.put(state, metaData.get(<span class="jxr_string">"count"</span>));
-<a class="jxr_linenumber" name="102" href="#102">102</a> }
-<a class="jxr_linenumber" name="103" href="#103">103</a> }
-<a class="jxr_linenumber" name="104" href="#104">104</a> Map<String, String> nextData = record.getMapField(state + <span class="jxr_string">".next"</span>);
-<a class="jxr_linenumber" name="105" href="#105">105</a> _stateTransitionTable.put(state, nextData);
-<a class="jxr_linenumber" name="106" href="#106">106</a> }
-<a class="jxr_linenumber" name="107" href="#107">107</a> }
-<a class="jxr_linenumber" name="108" href="#108">108</a>
-<a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_comment">// add transitions for helix-defined states</em>
-<a class="jxr_linenumber" name="110" href="#110">110</a> <strong class="jxr_keyword">for</strong> (HelixDefinedState state : HelixDefinedState.values()) {
-<a class="jxr_linenumber" name="111" href="#111">111</a> <strong class="jxr_keyword">if</strong> (!_statesPriorityList.contains(state.toString())) {
-<a class="jxr_linenumber" name="112" href="#112">112</a> _statesCountMap.put(state.toString(), <span class="jxr_string">"-1"</span>);
-<a class="jxr_linenumber" name="113" href="#113">113</a> }
-<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> addDefaultTransition(HelixDefinedState.ERROR.toString(), HelixDefinedState.DROPPED.toString(),
-<a class="jxr_linenumber" name="117" href="#117">117</a> HelixDefinedState.DROPPED.toString());
-<a class="jxr_linenumber" name="118" href="#118">118</a> addDefaultTransition(HelixDefinedState.ERROR.toString(), _initialState, _initialState);
-<a class="jxr_linenumber" name="119" href="#119">119</a> addDefaultTransition(_initialState, HelixDefinedState.DROPPED.toString(),
-<a class="jxr_linenumber" name="120" href="#120">120</a> HelixDefinedState.DROPPED.toString());
-<a class="jxr_linenumber" name="121" href="#121">121</a> }
-<a class="jxr_linenumber" name="122" href="#122">122</a>
-<a class="jxr_linenumber" name="123" href="#123">123</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="124" href="#124">124</a> <em class="jxr_javadoccomment"> * add transitions involving helix-defines states</em>
-<a class="jxr_linenumber" name="125" href="#125">125</a> <em class="jxr_javadoccomment"> * these transitions need not to be specified in state-model-definition</em>
-<a class="jxr_linenumber" name="126" href="#126">126</a> <em class="jxr_javadoccomment"> * @param from source state</em>
-<a class="jxr_linenumber" name="127" href="#127">127</a> <em class="jxr_javadoccomment"> * @param to destination state</em>
-<a class="jxr_linenumber" name="128" href="#128">128</a> <em class="jxr_javadoccomment"> * @param next intermediate state to reach the destination</em>
-<a class="jxr_linenumber" name="129" href="#129">129</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="130" href="#130">130</a> <strong class="jxr_keyword">void</strong> addDefaultTransition(String from, String to, String next) {
-<a class="jxr_linenumber" name="131" href="#131">131</a> <strong class="jxr_keyword">if</strong> (!_stateTransitionTable.containsKey(from)) {
-<a class="jxr_linenumber" name="132" href="#132">132</a> _stateTransitionTable.put(from, <strong class="jxr_keyword">new</strong> TreeMap<String, String>());
-<a class="jxr_linenumber" name="133" href="#133">133</a> }
-<a class="jxr_linenumber" name="134" href="#134">134</a>
-<a class="jxr_linenumber" name="135" href="#135">135</a> <strong class="jxr_keyword">if</strong> (!_stateTransitionTable.get(from).containsKey(to)) {
-<a class="jxr_linenumber" name="136" href="#136">136</a> _stateTransitionTable.get(from).put(to, next);
-<a class="jxr_linenumber" name="137" href="#137">137</a> }
-<a class="jxr_linenumber" name="138" href="#138">138</a> }
-<a class="jxr_linenumber" name="139" href="#139">139</a>
-<a class="jxr_linenumber" name="140" href="#140">140</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="141" href="#141">141</a> <em class="jxr_javadoccomment"> * Get an ordered priority list of transitions</em>
-<a class="jxr_linenumber" name="142" href="#142">142</a> <em class="jxr_javadoccomment"> * @return transitions in the form SRC-DEST, the first of which is highest priority</em>
-<a class="jxr_linenumber" name="143" href="#143">143</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="144" href="#144">144</a> <strong class="jxr_keyword">public</strong> List<String> getStateTransitionPriorityList() {
-<a class="jxr_linenumber" name="145" href="#145">145</a> <strong class="jxr_keyword">return</strong> _stateTransitionPriorityList;
-<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> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="149" href="#149">149</a> <em class="jxr_javadoccomment"> * Get an ordered priority list of states</em>
-<a class="jxr_linenumber" name="150" href="#150">150</a> <em class="jxr_javadoccomment"> * @return state names, the first of which is highest priority</em>
-<a class="jxr_linenumber" name="151" href="#151">151</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="152" href="#152">152</a> <strong class="jxr_keyword">public</strong> List<String> getStatesPriorityList() {
-<a class="jxr_linenumber" name="153" href="#153">153</a> <strong class="jxr_keyword">return</strong> _statesPriorityList;
-<a class="jxr_linenumber" name="154" href="#154">154</a> }
-<a class="jxr_linenumber" name="155" href="#155">155</a>
-<a class="jxr_linenumber" name="156" href="#156">156</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="157" href="#157">157</a> <em class="jxr_javadoccomment"> * Get the intermediate state required to transition from one state to the other</em>
-<a class="jxr_linenumber" name="158" href="#158">158</a> <em class="jxr_javadoccomment"> * @param fromState the source</em>
-<a class="jxr_linenumber" name="159" href="#159">159</a> <em class="jxr_javadoccomment"> * @param toState the destination</em>
-<a class="jxr_linenumber" name="160" href="#160">160</a> <em class="jxr_javadoccomment"> * @return the intermediate state</em>
-<a class="jxr_linenumber" name="161" href="#161">161</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="162" href="#162">162</a> <strong class="jxr_keyword">public</strong> String getNextStateForTransition(String fromState, String toState) {
-<a class="jxr_linenumber" name="163" href="#163">163</a> Map<String, String> map = _stateTransitionTable.get(fromState);
-<a class="jxr_linenumber" name="164" href="#164">164</a> <strong class="jxr_keyword">if</strong> (map != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="165" href="#165">165</a> <strong class="jxr_keyword">return</strong> map.get(toState);
-<a class="jxr_linenumber" name="166" href="#166">166</a> }
-<a class="jxr_linenumber" name="167" href="#167">167</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="168" href="#168">168</a> }
-<a class="jxr_linenumber" name="169" href="#169">169</a>
-<a class="jxr_linenumber" name="170" href="#170">170</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="171" href="#171">171</a> <em class="jxr_javadoccomment"> * Get the starting state in the model</em>
-<a class="jxr_linenumber" name="172" href="#172">172</a> <em class="jxr_javadoccomment"> * @return name of the initial state</em>
-<a class="jxr_linenumber" name="173" href="#173">173</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="174" href="#174">174</a> <strong class="jxr_keyword">public</strong> String getInitialState() {
-<a class="jxr_linenumber" name="175" href="#175">175</a> <em class="jxr_comment">// return _record.getSimpleField(StateModelDefinitionProperty.INITIAL_STATE</em>
-<a class="jxr_linenumber" name="176" href="#176">176</a> <em class="jxr_comment">// .toString());</em>
-<a class="jxr_linenumber" name="177" href="#177">177</a> <strong class="jxr_keyword">return</strong> _initialState;
-<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> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="181" href="#181">181</a> <em class="jxr_javadoccomment"> * Number of instances that can be in each state</em>
-<a class="jxr_linenumber" name="182" href="#182">182</a> <em class="jxr_javadoccomment"> * @param state the state name</em>
-<a class="jxr_linenumber" name="183" href="#183">183</a> <em class="jxr_javadoccomment"> * @return maximum instance count per state, can be "N" or "R"</em>
-<a class="jxr_linenumber" name="184" href="#184">184</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="185" href="#185">185</a> <strong class="jxr_keyword">public</strong> String getNumInstancesPerState(String state) {
-<a class="jxr_linenumber" name="186" href="#186">186</a> <strong class="jxr_keyword">return</strong> _statesCountMap.get(state);
-<a class="jxr_linenumber" name="187" href="#187">187</a> }
-<a class="jxr_linenumber" name="188" href="#188">188</a>
-<a class="jxr_linenumber" name="189" href="#189">189</a> @Override
-<a class="jxr_linenumber" name="190" href="#190">190</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isValid() {
-<a class="jxr_linenumber" name="191" href="#191">191</a> <strong class="jxr_keyword">if</strong> (getInitialState() == <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="192" href="#192">192</a> _logger.error(<span class="jxr_string">"State model does not contain init state, statemodel:"</span> + _record.getId());
-<a class="jxr_linenumber" name="193" href="#193">193</a> <strong class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="194" href="#194">194</a> }
-<a class="jxr_linenumber" name="195" href="#195">195</a> <strong class="jxr_keyword">if</strong> (_record.getListField(StateModelDefinitionProperty.STATE_PRIORITY_LIST.toString()) == <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="196" href="#196">196</a> _logger.error(<span class="jxr_string">"CurrentState does not contain StatesPriorityList, state model : "</span>
-<a class="jxr_linenumber" name="197" href="#197">197</a> + _record.getId());
-<a class="jxr_linenumber" name="198" href="#198">198</a> <strong class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="199" href="#199">199</a> }
-<a class="jxr_linenumber" name="200" href="#200">200</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="201" href="#201">201</a> }
-<a class="jxr_linenumber" name="202" href="#202">202</a>
-<a class="jxr_linenumber" name="203" href="#203">203</a> <em class="jxr_comment">// TODO move this to model.builder package, refactor StateModelConfigGenerator to use this</em>
-<a class="jxr_linenumber" name="204" href="#204">204</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="205" href="#205">205</a> <em class="jxr_javadoccomment"> * Construct a state model</em>
-<a class="jxr_linenumber" name="206" href="#206">206</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="207" href="#207">207</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> {
-<a class="jxr_linenumber" name="208" href="#208">208</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> String _statemodelName;
-<a class="jxr_linenumber" name="209" href="#209">209</a> <strong class="jxr_keyword">private</strong> String initialState;
-<a class="jxr_linenumber" name="210" href="#210">210</a> Map<String, Integer> statesMap;
-<a class="jxr_linenumber" name="211" href="#211">211</a> Map<Transition, Integer> transitionMap;
-<a class="jxr_linenumber" name="212" href="#212">212</a> Map<String, String> stateConstraintMap;
-<a class="jxr_linenumber" name="213" href="#213">213</a>
-<a class="jxr_linenumber" name="214" href="#214">214</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="215" href="#215">215</a> <em class="jxr_javadoccomment"> * Start building a state model with a name</em>
-<a class="jxr_linenumber" name="216" href="#216">216</a> <em class="jxr_javadoccomment"> * @param name state model name</em>
-<a class="jxr_linenumber" name="217" href="#217">217</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="218" href="#218">218</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a>(String name) {
-<a class="jxr_linenumber" name="219" href="#219">219</a> <strong class="jxr_keyword">this</strong>._statemodelName = name;
-<a class="jxr_linenumber" name="220" href="#220">220</a> statesMap = <strong class="jxr_keyword">new</strong> HashMap<String, Integer>();
-<a class="jxr_linenumber" name="221" href="#221">221</a> transitionMap = <strong class="jxr_keyword">new</strong> HashMap<Transition, Integer>();
-<a class="jxr_linenumber" name="222" href="#222">222</a> stateConstraintMap = <strong class="jxr_keyword">new</strong> HashMap<String, String>();
+<a class="jxr_linenumber" name="46" href="#46">46</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="47" href="#47">47</a> <em class="jxr_javadoccomment"> * state model's initial state</em>
+<a class="jxr_linenumber" name="48" href="#48">48</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="49" href="#49">49</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> String _initialState;
+<a class="jxr_linenumber" name="50" href="#50">50</a>
+<a class="jxr_linenumber" name="51" href="#51">51</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * State Names in priority order. Indicates the order in which states are</em>
+<a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * fulfilled</em>
+<a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="55" href="#55">55</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> List<String> _statesPriorityList;
+<a class="jxr_linenumber" name="56" href="#56">56</a>
+<a class="jxr_linenumber" name="57" href="#57">57</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="58" href="#58">58</a> <em class="jxr_javadoccomment"> * Specifies the number of instances for a given state <br></em>
+<a class="jxr_linenumber" name="59" href="#59">59</a> <em class="jxr_javadoccomment"> * -1 don't care, don't try to keep any resource in this state on any instance <br></em>
+<a class="jxr_linenumber" name="60" href="#60">60</a> <em class="jxr_javadoccomment"> * >0 any integer number greater than 0 specifies the number of instances</em>
+<a class="jxr_linenumber" name="61" href="#61">61</a> <em class="jxr_javadoccomment"> * needed to be in this state <br></em>
+<a class="jxr_linenumber" name="62" href="#62">62</a> <em class="jxr_javadoccomment"> * R all instances in the preference list can be in this state <br></em>
+<a class="jxr_linenumber" name="63" href="#63">63</a> <em class="jxr_javadoccomment"> * N all instances in the cluster will be put in this state.PreferenceList</em>
+<a class="jxr_linenumber" name="64" href="#64">64</a> <em class="jxr_javadoccomment"> * must be denoted as '*'</em>
+<a class="jxr_linenumber" name="65" href="#65">65</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="66" href="#66">66</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Map<String, String> _statesCountMap;
+<a class="jxr_linenumber" name="67" href="#67">67</a>
+<a class="jxr_linenumber" name="68" href="#68">68</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> List<String> _stateTransitionPriorityList;
+<a class="jxr_linenumber" name="69" href="#69">69</a>
+<a class="jxr_linenumber" name="70" href="#70">70</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="71" href="#71">71</a> <em class="jxr_javadoccomment"> * StateTransition which is used to find the nextState given StartState and</em>
+<a class="jxr_linenumber" name="72" href="#72">72</a> <em class="jxr_javadoccomment"> * FinalState</em>
+<a class="jxr_linenumber" name="73" href="#73">73</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="74" href="#74">74</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Map<String, Map<String, String>> _stateTransitionTable;
+<a class="jxr_linenumber" name="75" href="#75">75</a>
+<a class="jxr_linenumber" name="76" href="#76">76</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="77" href="#77">77</a> <em class="jxr_javadoccomment"> * Instantiate from a pre-populated record</em>
+<a class="jxr_linenumber" name="78" href="#78">78</a> <em class="jxr_javadoccomment"> * @param record ZNRecord representing a state model definition</em>
+<a class="jxr_linenumber" name="79" href="#79">79</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="80" href="#80">80</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/model/StateModelDefinition.html">StateModelDefinition</a>(<a href="../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record) {
+<a class="jxr_linenumber" name="81" href="#81">81</a> <strong class="jxr_keyword">super</strong>(record);
+<a class="jxr_linenumber" name="82" href="#82">82</a>
+<a class="jxr_linenumber" name="83" href="#83">83</a> _initialState = record.getSimpleField(StateModelDefinitionProperty.INITIAL_STATE.toString());
+<a class="jxr_linenumber" name="84" href="#84">84</a>
+<a class="jxr_linenumber" name="85" href="#85">85</a> <strong class="jxr_keyword">if</strong> (_initialState == <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="86" href="#86">86</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"initial-state for "</span> + record.getId() + <span class="jxr_string">" is null"</span>);
+<a class="jxr_linenumber" name="87" href="#87">87</a> }
+<a class="jxr_linenumber" name="88" href="#88">88</a>
+<a class="jxr_linenumber" name="89" href="#89">89</a> _statesPriorityList =
+<a class="jxr_linenumber" name="90" href="#90">90</a> record.getListField(StateModelDefinitionProperty.STATE_PRIORITY_LIST.toString());
+<a class="jxr_linenumber" name="91" href="#91">91</a> _stateTransitionPriorityList =
+<a class="jxr_linenumber" name="92" href="#92">92</a> record.getListField(StateModelDefinitionProperty.STATE_TRANSITION_PRIORITYLIST.toString());
+<a class="jxr_linenumber" name="93" href="#93">93</a> _stateTransitionTable = <strong class="jxr_keyword">new</strong> HashMap<String, Map<String, String>>();
+<a class="jxr_linenumber" name="94" href="#94">94</a> _statesCountMap = <strong class="jxr_keyword">new</strong> HashMap<String, String>();
+<a class="jxr_linenumber" name="95" href="#95">95</a> <strong class="jxr_keyword">if</strong> (_statesPriorityList != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="96" href="#96">96</a> <strong class="jxr_keyword">for</strong> (String state : _statesPriorityList) {
+<a class="jxr_linenumber" name="97" href="#97">97</a> Map<String, String> metaData = record.getMapField(state + <span class="jxr_string">".meta"</span>);
+<a class="jxr_linenumber" name="98" href="#98">98</a> <strong class="jxr_keyword">if</strong> (metaData != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="99" href="#99">99</a> <strong class="jxr_keyword">if</strong> (metaData.get(<span class="jxr_string">"count"</span>) != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="100" href="#100">100</a> _statesCountMap.put(state, metaData.get(<span class="jxr_string">"count"</span>));
+<a class="jxr_linenumber" name="101" href="#101">101</a> }
+<a class="jxr_linenumber" name="102" href="#102">102</a> }
+<a class="jxr_linenumber" name="103" href="#103">103</a> Map<String, String> nextData = record.getMapField(state + <span class="jxr_string">".next"</span>);
+<a class="jxr_linenumber" name="104" href="#104">104</a> _stateTransitionTable.put(state, nextData);
+<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>
+<a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_comment">// add transitions for helix-defined states</em>
+<a class="jxr_linenumber" name="109" href="#109">109</a> <strong class="jxr_keyword">for</strong> (HelixDefinedState state : HelixDefinedState.values()) {
+<a class="jxr_linenumber" name="110" href="#110">110</a> <strong class="jxr_keyword">if</strong> (!_statesPriorityList.contains(state.toString())) {
+<a class="jxr_linenumber" name="111" href="#111">111</a> _statesCountMap.put(state.toString(), <span class="jxr_string">"-1"</span>);
+<a class="jxr_linenumber" name="112" href="#112">112</a> }
+<a class="jxr_linenumber" name="113" href="#113">113</a> }
+<a class="jxr_linenumber" name="114" href="#114">114</a>
+<a class="jxr_linenumber" name="115" href="#115">115</a> addDefaultTransition(HelixDefinedState.ERROR.toString(), HelixDefinedState.DROPPED.toString(),
+<a class="jxr_linenumber" name="116" href="#116">116</a> HelixDefinedState.DROPPED.toString());
+<a class="jxr_linenumber" name="117" href="#117">117</a> addDefaultTransition(HelixDefinedState.ERROR.toString(), _initialState, _initialState);
+<a class="jxr_linenumber" name="118" href="#118">118</a> addDefaultTransition(_initialState, HelixDefinedState.DROPPED.toString(),
+<a class="jxr_linenumber" name="119" href="#119">119</a> HelixDefinedState.DROPPED.toString());
+<a class="jxr_linenumber" name="120" href="#120">120</a> }
+<a class="jxr_linenumber" name="121" href="#121">121</a>
+<a class="jxr_linenumber" name="122" href="#122">122</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="123" href="#123">123</a> <em class="jxr_javadoccomment"> * add transitions involving helix-defines states</em>
+<a class="jxr_linenumber" name="124" href="#124">124</a> <em class="jxr_javadoccomment"> * these transitions need not to be specified in state-model-definition</em>
+<a class="jxr_linenumber" name="125" href="#125">125</a> <em class="jxr_javadoccomment"> * @param from source state</em>
+<a class="jxr_linenumber" name="126" href="#126">126</a> <em class="jxr_javadoccomment"> * @param to destination state</em>
+<a class="jxr_linenumber" name="127" href="#127">127</a> <em class="jxr_javadoccomment"> * @param next intermediate state to reach the destination</em>
+<a class="jxr_linenumber" name="128" href="#128">128</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="129" href="#129">129</a> <strong class="jxr_keyword">void</strong> addDefaultTransition(String from, String to, String next) {
+<a class="jxr_linenumber" name="130" href="#130">130</a> <strong class="jxr_keyword">if</strong> (!_stateTransitionTable.containsKey(from)) {
+<a class="jxr_linenumber" name="131" href="#131">131</a> _stateTransitionTable.put(from, <strong class="jxr_keyword">new</strong> TreeMap<String, String>());
+<a class="jxr_linenumber" name="132" href="#132">132</a> }
+<a class="jxr_linenumber" name="133" href="#133">133</a>
+<a class="jxr_linenumber" name="134" href="#134">134</a> <strong class="jxr_keyword">if</strong> (!_stateTransitionTable.get(from).containsKey(to)) {
+<a class="jxr_linenumber" name="135" href="#135">135</a> _stateTransitionTable.get(from).put(to, next);
+<a class="jxr_linenumber" name="136" href="#136">136</a> }
+<a class="jxr_linenumber" name="137" href="#137">137</a> }
+<a class="jxr_linenumber" name="138" href="#138">138</a>
+<a class="jxr_linenumber" name="139" href="#139">139</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="140" href="#140">140</a> <em class="jxr_javadoccomment"> * Get an ordered priority list of transitions</em>
+<a class="jxr_linenumber" name="141" href="#141">141</a> <em class="jxr_javadoccomment"> * @return transitions in the form SRC-DEST, the first of which is highest priority</em>
+<a class="jxr_linenumber" name="142" href="#142">142</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="143" href="#143">143</a> <strong class="jxr_keyword">public</strong> List<String> getStateTransitionPriorityList() {
+<a class="jxr_linenumber" name="144" href="#144">144</a> <strong class="jxr_keyword">return</strong> _stateTransitionPriorityList;
+<a class="jxr_linenumber" name="145" href="#145">145</a> }
+<a class="jxr_linenumber" name="146" href="#146">146</a>
+<a class="jxr_linenumber" name="147" href="#147">147</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="148" href="#148">148</a> <em class="jxr_javadoccomment"> * Get an ordered priority list of states</em>
+<a class="jxr_linenumber" name="149" href="#149">149</a> <em class="jxr_javadoccomment"> * @return state names, the first of which is highest priority</em>
+<a class="jxr_linenumber" name="150" href="#150">150</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="151" href="#151">151</a> <strong class="jxr_keyword">public</strong> List<String> getStatesPriorityList() {
+<a class="jxr_linenumber" name="152" href="#152">152</a> <strong class="jxr_keyword">return</strong> _statesPriorityList;
+<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_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="156" href="#156">156</a> <em class="jxr_javadoccomment"> * Get the intermediate state required to transition from one state to the other</em>
+<a class="jxr_linenumber" name="157" href="#157">157</a> <em class="jxr_javadoccomment"> * @param fromState the source</em>
+<a class="jxr_linenumber" name="158" href="#158">158</a> <em class="jxr_javadoccomment"> * @param toState the destination</em>
+<a class="jxr_linenumber" name="159" href="#159">159</a> <em class="jxr_javadoccomment"> * @return the intermediate state</em>
+<a class="jxr_linenumber" name="160" href="#160">160</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="161" href="#161">161</a> <strong class="jxr_keyword">public</strong> String getNextStateForTransition(String fromState, String toState) {
+<a class="jxr_linenumber" name="162" href="#162">162</a> Map<String, String> map = _stateTransitionTable.get(fromState);
+<a class="jxr_linenumber" name="163" href="#163">163</a> <strong class="jxr_keyword">if</strong> (map != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="164" href="#164">164</a> <strong class="jxr_keyword">return</strong> map.get(toState);
+<a class="jxr_linenumber" name="165" href="#165">165</a> }
+<a class="jxr_linenumber" name="166" href="#166">166</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
+<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> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="170" href="#170">170</a> <em class="jxr_javadoccomment"> * Get the starting state in the model</em>
+<a class="jxr_linenumber" name="171" href="#171">171</a> <em class="jxr_javadoccomment"> * @return name of the initial state</em>
+<a class="jxr_linenumber" name="172" href="#172">172</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="173" href="#173">173</a> <strong class="jxr_keyword">public</strong> String getInitialState() {
+<a class="jxr_linenumber" name="174" href="#174">174</a> <em class="jxr_comment">// return _record.getSimpleField(StateModelDefinitionProperty.INITIAL_STATE</em>
+<a class="jxr_linenumber" name="175" href="#175">175</a> <em class="jxr_comment">// .toString());</em>
+<a class="jxr_linenumber" name="176" href="#176">176</a> <strong class="jxr_keyword">return</strong> _initialState;
+<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> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="180" href="#180">180</a> <em class="jxr_javadoccomment"> * Number of instances that can be in each state</em>
+<a class="jxr_linenumber" name="181" href="#181">181</a> <em class="jxr_javadoccomment"> * @param state the state name</em>
+<a class="jxr_linenumber" name="182" href="#182">182</a> <em class="jxr_javadoccomment"> * @return maximum instance count per state, can be "N" or "R"</em>
+<a class="jxr_linenumber" name="183" href="#183">183</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="184" href="#184">184</a> <strong class="jxr_keyword">public</strong> String getNumInstancesPerState(String state) {
+<a class="jxr_linenumber" name="185" href="#185">185</a> <strong class="jxr_keyword">return</strong> _statesCountMap.get(state);
+<a class="jxr_linenumber" name="186" href="#186">186</a> }
+<a class="jxr_linenumber" name="187" href="#187">187</a>
+<a class="jxr_linenumber" name="188" href="#188">188</a> @Override
+<a class="jxr_linenumber" name="189" href="#189">189</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isValid() {
+<a class="jxr_linenumber" name="190" href="#190">190</a> <strong class="jxr_keyword">return</strong> StateModelDefinitionValidator.isStateModelDefinitionValid(<strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="191" href="#191">191</a> }
+<a class="jxr_linenumber" name="192" href="#192">192</a>
+<a class="jxr_linenumber" name="193" href="#193">193</a> <em class="jxr_comment">// TODO move this to model.builder package, refactor StateModelConfigGenerator to use this</em>
+<a class="jxr_linenumber" name="194" href="#194">194</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="195" href="#195">195</a> <em class="jxr_javadoccomment"> * Construct a state model</em>
+<a class="jxr_linenumber" name="196" href="#196">196</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="197" href="#197">197</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> {
+<a class="jxr_linenumber" name="198" href="#198">198</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> String _statemodelName;
+<a class="jxr_linenumber" name="199" href="#199">199</a> <strong class="jxr_keyword">private</strong> String initialState;
+<a class="jxr_linenumber" name="200" href="#200">200</a> Map<String, Integer> statesMap;
+<a class="jxr_linenumber" name="201" href="#201">201</a> Map<Transition, Integer> transitionMap;
+<a class="jxr_linenumber" name="202" href="#202">202</a> Map<String, String> stateConstraintMap;
+<a class="jxr_linenumber" name="203" href="#203">203</a>
+<a class="jxr_linenumber" name="204" href="#204">204</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="205" href="#205">205</a> <em class="jxr_javadoccomment"> * Start building a state model with a name</em>
+<a class="jxr_linenumber" name="206" href="#206">206</a> <em class="jxr_javadoccomment"> * @param name state model name</em>
+<a class="jxr_linenumber" name="207" href="#207">207</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="208" href="#208">208</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a>(String name) {
+<a class="jxr_linenumber" name="209" href="#209">209</a> <strong class="jxr_keyword">this</strong>._statemodelName = name;
+<a class="jxr_linenumber" name="210" href="#210">210</a> statesMap = <strong class="jxr_keyword">new</strong> HashMap<String, Integer>();
+<a class="jxr_linenumber" name="211" href="#211">211</a> transitionMap = <strong class="jxr_keyword">new</strong> HashMap<Transition, Integer>();
+<a class="jxr_linenumber" name="212" href="#212">212</a> stateConstraintMap = <strong class="jxr_keyword">new</strong> HashMap<String, String>();
+<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> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="216" href="#216">216</a> <em class="jxr_javadoccomment"> * initial state of a replica when it starts, most commonly used initial</em>
+<a class="jxr_linenumber" name="217" href="#217">217</a> <em class="jxr_javadoccomment"> * state is OFFLINE</em>
+<a class="jxr_linenumber" name="218" href="#218">218</a> <em class="jxr_javadoccomment"> * @param state</em>
+<a class="jxr_linenumber" name="219" href="#219">219</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="220" href="#220">220</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> initialState(String initialState) {
+<a class="jxr_linenumber" name="221" href="#221">221</a> <strong class="jxr_keyword">this</strong>.initialState = initialState;
+<a class="jxr_linenumber" name="222" href="#222">222</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
<a class="jxr_linenumber" name="223" href="#223">223</a> }
<a class="jxr_linenumber" name="224" href="#224">224</a>
<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> <em class="jxr_javadoccomment"> * initial state of a replica when it starts, most commonly used initial</em>
-<a class="jxr_linenumber" name="227" href="#227">227</a> <em class="jxr_javadoccomment"> * state is OFFLINE</em>
-<a class="jxr_linenumber" name="228" href="#228">228</a> <em class="jxr_javadoccomment"> * @param state</em>
-<a class="jxr_linenumber" name="229" href="#229">229</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="230" href="#230">230</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> initialState(String initialState) {
-<a class="jxr_linenumber" name="231" href="#231">231</a> <strong class="jxr_keyword">this</strong>.initialState = initialState;
-<a class="jxr_linenumber" name="232" href="#232">232</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
-<a class="jxr_linenumber" name="233" href="#233">233</a> }
-<a class="jxr_linenumber" name="234" href="#234">234</a>
-<a class="jxr_linenumber" name="235" href="#235">235</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="236" href="#236">236</a> <em class="jxr_javadoccomment"> * Define all valid states using this method. Set the priority in which the</em>
-<a class="jxr_linenumber" name="237" href="#237">237</a> <em class="jxr_javadoccomment"> * constraints must be satisfied. Lets say STATE1 has a constraint of 1 and</em>
-<a class="jxr_linenumber" name="238" href="#238">238</a> <em class="jxr_javadoccomment"> * STATE2 has a constraint of 3 but only one node is up then Helix will uses</em>
-<a class="jxr_linenumber" name="239" href="#239">239</a> <em class="jxr_javadoccomment"> * the priority to see STATE constraint has to be given higher preference <br/></em>
-<a class="jxr_linenumber" name="240" href="#240">240</a> <em class="jxr_javadoccomment"> * Use -1 to indicates states with no constraints, like OFFLINE</em>
-<a class="jxr_linenumber" name="241" href="#241">241</a> <em class="jxr_javadoccomment"> * @param states</em>
-<a class="jxr_linenumber" name="242" href="#242">242</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="243" href="#243">243</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> addState(String state, <strong class="jxr_keyword">int</strong> priority) {
-<a class="jxr_linenumber" name="244" href="#244">244</a> statesMap.put(state, priority);
-<a class="jxr_linenumber" name="245" href="#245">245</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
-<a class="jxr_linenumber" name="246" href="#246">246</a> }
-<a class="jxr_linenumber" name="247" href="#247">247</a>
-<a class="jxr_linenumber" name="248" href="#248">248</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="249" href="#249">249</a> <em class="jxr_javadoccomment"> * Sets the priority to Integer.MAX_VALUE</em>
-<a class="jxr_linenumber" name="250" href="#250">250</a> <em class="jxr_javadoccomment"> * @param state</em>
-<a class="jxr_linenumber" name="251" href="#251">251</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="252" href="#252">252</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> addState(String state) {
-<a class="jxr_linenumber" name="253" href="#253">253</a> addState(state, Integer.MAX_VALUE);
-<a class="jxr_linenumber" name="254" href="#254">254</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
-<a class="jxr_linenumber" name="255" href="#255">255</a> }
-<a class="jxr_linenumber" name="256" href="#256">256</a>
-<a class="jxr_linenumber" name="257" href="#257">257</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="258" href="#258">258</a> <em class="jxr_javadoccomment"> * Define all legal transitions between states using this method. Priority</em>
-<a class="jxr_linenumber" name="259" href="#259">259</a> <em class="jxr_javadoccomment"> * is used to order the transitions. Helix tries to maximize the number of</em>
-<a class="jxr_linenumber" name="260" href="#260">260</a> <em class="jxr_javadoccomment"> * transitions that can be fired in parallel without violating the</em>
-<a class="jxr_linenumber" name="261" href="#261">261</a> <em class="jxr_javadoccomment"> * constraint. The transitions are first sorted based on priority and</em>
-<a class="jxr_linenumber" name="262" href="#262">262</a> <em class="jxr_javadoccomment"> * transitions are selected in a greedy way until the constriants are not</em>
-<a class="jxr_linenumber" name="263" href="#263">263</a> <em class="jxr_javadoccomment"> * violated.</em>
-<a class="jxr_linenumber" name="264" href="#264">264</a> <em class="jxr_javadoccomment"> * @param fromState source</em>
-<a class="jxr_linenumber" name="265" href="#265">265</a> <em class="jxr_javadoccomment"> * @param toState destination</em>
-<a class="jxr_linenumber" name="266" href="#266">266</a> <em class="jxr_javadoccomment"> * @param priority priority, higher value is higher priority</em>
-<a class="jxr_linenumber" name="267" href="#267">267</a> <em class="jxr_javadoccomment"> * @return Builder</em>
-<a class="jxr_linenumber" name="268" href="#268">268</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="269" href="#269">269</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> addTransition(String fromState, String toState, <strong class="jxr_keyword">int</strong> priority) {
-<a class="jxr_linenumber" name="270" href="#270">270</a> transitionMap.put(<strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/helix/model/Transition.html">Transition</a>(fromState, toState), priority);
-<a class="jxr_linenumber" name="271" href="#271">271</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
-<a class="jxr_linenumber" name="272" href="#272">272</a> }
-<a class="jxr_linenumber" name="273" href="#273">273</a>
-<a class="jxr_linenumber" name="274" href="#274">274</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="275" href="#275">275</a> <em class="jxr_javadoccomment"> * Add a state transition with maximal priority value</em>
-<a class="jxr_linenumber" name="276" href="#276">276</a> <em class="jxr_javadoccomment"> * @see #addTransition(String, String, int)</em>
-<a class="jxr_linenumber" name="277" href="#277">277</a> <em class="jxr_javadoccomment"> * @param fromState</em>
-<a class="jxr_linenumber" name="278" href="#278">278</a> <em class="jxr_javadoccomment"> * @param toState</em>
-<a class="jxr_linenumber" name="279" href="#279">279</a> <em class="jxr_javadoccomment"> * @return Builder</em>
-<a class="jxr_linenumber" name="280" href="#280">280</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="281" href="#281">281</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> addTransition(String fromState, String toState) {
-<a class="jxr_linenumber" name="282" href="#282">282</a> addTransition(fromState, toState, Integer.MAX_VALUE);
-<a class="jxr_linenumber" name="283" href="#283">283</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
-<a class="jxr_linenumber" name="284" href="#284">284</a> }
-<a class="jxr_linenumber" name="285" href="#285">285</a>
-<a class="jxr_linenumber" name="286" href="#286">286</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="287" href="#287">287</a> <em class="jxr_javadoccomment"> * Set a maximum for replicas in this state</em>
-<a class="jxr_linenumber" name="288" href="#288">288</a> <em class="jxr_javadoccomment"> * @param state state name</em>
-<a class="jxr_linenumber" name="289" href="#289">289</a> <em class="jxr_javadoccomment"> * @param upperBound maximum</em>
-<a class="jxr_linenumber" name="290" href="#290">290</a> <em class="jxr_javadoccomment"> * @return Builder</em>
-<a class="jxr_linenumber" name="291" href="#291">291</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="292" href="#292">292</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> upperBound(String state, <strong class="jxr_keyword">int</strong> upperBound) {
-<a class="jxr_linenumber" name="293" href="#293">293</a> stateConstraintMap.put(state, String.valueOf(upperBound));
-<a class="jxr_linenumber" name="294" href="#294">294</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
-<a class="jxr_linenumber" name="295" href="#295">295</a> }
-<a class="jxr_linenumber" name="296" href="#296">296</a>
-<a class="jxr_linenumber" name="297" href="#297">297</a> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="298" href="#298">298</a> <em class="jxr_javadoccomment"> * You can use this to have the bounds dynamically change based on other</em>
-<a class="jxr_linenumber" name="299" href="#299">299</a> <em class="jxr_javadoccomment"> * parameters. <br/></em>
-<a class="jxr_linenumber" name="300" href="#300">300</a> <em class="jxr_javadoccomment"> * Currently support 2 values <br/></em>
-<a class="jxr_linenumber" name="301" href="#301">301</a> <em class="jxr_javadoccomment"> * R --> Refers to the number of replicas specified during resource</em>
-<a class="jxr_linenumber" name="302" href="#302">302</a> <em class="jxr_javadoccomment"> * creation. This allows having different replication factor for each</em>
-<a class="jxr_linenumber" name="303" href="#303">303</a> <em class="jxr_javadoccomment"> * resource without having to create a different state machine. <br/></em>
-<a class="jxr_linenumber" name="304" href="#304">304</a> <em class="jxr_javadoccomment"> * N --> Refers to all nodes in the cluster. Useful for resources that need</em>
-<a class="jxr_linenumber" name="305" href="#305">305</a> <em class="jxr_javadoccomment"> * to exist on all nodes. This way one can add/remove nodes without having</em>
-<a class="jxr_linenumber" name="306" href="#306">306</a> <em class="jxr_javadoccomment"> * the change the bounds.</em>
-<a class="jxr_linenumber" name="307" href="#307">307</a> <em class="jxr_javadoccomment"> * @param state</em>
-<a class="jxr_linenumber" name="308" href="#308">308</a> <em class="jxr_javadoccomment"> * @param bound</em>
-<a class="jxr_linenumber" name="309" href="#309">309</a> <em class="jxr_javadoccomment"> * @return Builder</em>
-<a class="jxr_linenumber" name="310" href="#310">310</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="311" href="#311">311</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> dynamicUpperBound(String state, String bound) {
-<a class="jxr_linenumber" name="312" href="#312">312</a> stateConstraintMap.put(state, bound);
-<a class="jxr_linenumber" name="313" href="#313">313</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
-<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> <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="317" href="#317">317</a> <em class="jxr_javadoccomment"> * Create a StateModelDefinition from this Builder</em>
-<a class="jxr_linenumber" name="318" href="#318">318</a> <em class="jxr_javadoccomment"> * @return StateModelDefinition</em>
-<a class="jxr_linenumber" name="319" href="#319">319</a> <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="320" href="#320">320</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/model/StateModelDefinition.html">StateModelDefinition</a> build() {
-<a class="jxr_linenumber" name="321" href="#321">321</a> <a href="../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/helix/ZNRecord.html">ZNRecord</a>(_statemodelName);
-<a class="jxr_linenumber" name="322" href="#322">322</a> ArrayList<String> statePriorityList = <strong class="jxr_keyword">new</strong> ArrayList<String>(statesMap.keySet());
-<a class="jxr_linenumber" name="323" href="#323">323</a> Comparator<? <strong class="jxr_keyword">super</strong> String> c1 = <strong class="jxr_keyword">new</strong> Comparator<String>() {
-<a class="jxr_linenumber" name="324" href="#324">324</a>
-<a class="jxr_linenumber" name="325" href="#325">325</a> @Override
-<a class="jxr_linenumber" name="326" href="#326">326</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> compare(String o1, String o2) {
-<a class="jxr_linenumber" name="327" href="#327">327</a> <strong class="jxr_keyword">return</strong> statesMap.get(o1).compareTo(statesMap.get(o2));
-<a class="jxr_linenumber" name="328" href="#328">328</a> }
-<a class="jxr_linenumber" name="329" href="#329">329</a> };
-<a class="jxr_linenumber" name="330" href="#330">330</a> Collections.sort(statePriorityList, c1);
-<a class="jxr_linenumber" name="331" href="#331">331</a> ArrayList<Transition> transitionList = <strong class="jxr_keyword">new</strong> ArrayList<Transition>(transitionMap.keySet());
-<a class="jxr_linenumber" name="332" href="#332">332</a>
-<a class="jxr_linenumber" name="333" href="#333">333</a> Comparator<? <strong class="jxr_keyword">super</strong> Transition> c2 = <strong class="jxr_keyword">new</strong> Comparator<Transition>() {
-<a class="jxr_linenumber" name="334" href="#334">334</a> @Override
-<a class="jxr_linenumber" name="335" href="#335">335</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> compare(<a href="../../../../org/apache/helix/model/Transition.html">Transition</a> o1, <a href="../../../../org/apache/helix/model/Transition.html">Transition</a> o2) {
-<a class="jxr_linenumber" name="336" href="#336">336</a> <strong class="jxr_keyword">return</strong> transitionMap.get(o1).compareTo(transitionMap.get(o2));
-<a class="jxr_linenumber" name="337" href="#337">337</a> }
-<a class="jxr_linenumber" name="338" href="#338">338</a> };
-<a class="jxr_linenumber" name="339" href="#339">339</a> Collections.sort(transitionList, c2);
-<a class="jxr_linenumber" name="340" href="#340">340</a> List<String> transitionPriorityList = <strong class="jxr_keyword">new</strong> ArrayList<String>(transitionList.size());
-<a class="jxr_linenumber" name="341" href="#341">341</a> <strong class="jxr_keyword">for</strong> (Transition t : transitionList) {
-<a class="jxr_linenumber" name="342" href="#342">342</a> transitionPriorityList.add(t.toString());
-<a class="jxr_linenumber" name="343" href="#343">343</a> }
-<a class="jxr_linenumber" name="344" href="#344">344</a>
-<a class="jxr_linenumber" name="345" href="#345">345</a> record.setSimpleField(StateModelDefinitionProperty.INITIAL_STATE.toString(), initialState);
-<a class="jxr_linenumber" name="346" href="#346">346</a> record.setListField(StateModelDefinitionProperty.STATE_PRIORITY_LIST.toString(),
-<a class="jxr_linenumber" name="347" href="#347">347</a> statePriorityList);
-<a class="jxr_linenumber" name="348" href="#348">348</a> record.setListField(StateModelDefinitionProperty.STATE_TRANSITION_PRIORITYLIST.toString(),
-<a class="jxr_linenumber" name="349" href="#349">349</a> transitionPriorityList);
-<a class="jxr_linenumber" name="350" href="#350">350</a> <a href="../../../../org/apache/helix/model/builder/StateTransitionTableBuilder.html">StateTransitionTableBuilder</a> stateTransitionTableBuilder = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/helix/model/builder/StateTransitionTableBuilder.html">StateTransitionTableBuilder</a>();
-<a class="jxr_linenumber" name="351" href="#351">351</a> Map<String, Map<String, String>> transitionTable =
-<a class="jxr_linenumber" name="352" href="#352">352</a> stateTransitionTableBuilder.buildTransitionTable(statePriorityList,
-<a class="jxr_linenumber" name="353" href="#353">353</a> <strong class="jxr_keyword">new</strong> ArrayList<Transition>(transitionMap.keySet()));
-<a class="jxr_linenumber" name="354" href="#354">354</a> <strong class="jxr_keyword">for</strong> (String state : transitionTable.keySet()) {
-<a class="jxr_linenumber" name="355" href="#355">355</a> record.setMapField(state + <span class="jxr_string">".next"</span>, transitionTable.get(state));
-<a class="jxr_linenumber" name="356" href="#356">356</a> }
-<a class="jxr_linenumber" name="357" href="#357">357</a> <strong class="jxr_keyword">for</strong> (String state : statePriorityList) {
-<a class="jxr_linenumber" name="358" href="#358">358</a> HashMap<String, String> metadata = <strong class="jxr_keyword">new</strong> HashMap<String, String>();
-<a class="jxr_linenumber" name="359" href="#359">359</a> <strong class="jxr_keyword">if</strong> (stateConstraintMap.get(state) != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="360" href="#360">360</a> metadata.put(<span class="jxr_string">"count"</span>, stateConstraintMap.get(state));
-<a class="jxr_linenumber" name="361" href="#361">361</a> } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="362" href="#362">362</a> metadata.put(<span class="jxr_string">"count"</span>, <span class="jxr_string">"-1"</span>);
-<a class="jxr_linenumber" name="363" href="#363">363</a> }
-<a class="jxr_linenumber" name="364" href="#364">364</a> record.setMapField(state + <span class="jxr_string">".meta"</span>, metadata);
-<a class="jxr_linenumber" name="365" href="#365">365</a> }
-<a class="jxr_linenumber" name="366" href="#366">366</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/helix/model/StateModelDefinition.html">StateModelDefinition</a>(record);
-<a class="jxr_linenumber" name="367" href="#367">367</a> }
-<a class="jxr_linenumber" name="368" href="#368">368</a>
-<a class="jxr_linenumber" name="369" href="#369">369</a> }
-<a class="jxr_linenumber" name="370" href="#370">370</a>
-<a class="jxr_linenumber" name="371" href="#371">371</a> }
+<a class="jxr_linenumber" name="226" href="#226">226</a> <em class="jxr_javadoccomment"> * Define all valid states using this method. Set the priority in which the</em>
+<a class="jxr_linenumber" name="227" href="#227">227</a> <em class="jxr_javadoccomment"> * constraints must be satisfied. Lets say STATE1 has a constraint of 1 and</em>
+<a class="jxr_linenumber" name="228" href="#228">228</a> <em class="jxr_javadoccomment"> * STATE2 has a constraint of 3 but only one node is up then Helix will uses</em>
+<a class="jxr_linenumber" name="229" href="#229">229</a> <em class="jxr_javadoccomment"> * the priority to see STATE constraint has to be given higher preference <br/></em>
+<a class="jxr_linenumber" name="230" href="#230">230</a> <em class="jxr_javadoccomment"> * Use -1 to indicates states with no constraints, like OFFLINE</em>
+<a class="jxr_linenumber" name="231" href="#231">231</a> <em class="jxr_javadoccomment"> * @param states</em>
+<a class="jxr_linenumber" name="232" href="#232">232</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="233" href="#233">233</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> addState(String state, <strong class="jxr_keyword">int</strong> priority) {
+<a class="jxr_linenumber" name="234" href="#234">234</a> statesMap.put(state, priority);
+<a class="jxr_linenumber" name="235" href="#235">235</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
+<a class="jxr_linenumber" name="236" href="#236">236</a> }
+<a class="jxr_linenumber" name="237" href="#237">237</a>
+<a class="jxr_linenumber" name="238" href="#238">238</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="239" href="#239">239</a> <em class="jxr_javadoccomment"> * Sets the priority to Integer.MAX_VALUE</em>
+<a class="jxr_linenumber" name="240" href="#240">240</a> <em class="jxr_javadoccomment"> * @param state</em>
+<a class="jxr_linenumber" name="241" href="#241">241</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="242" href="#242">242</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> addState(String state) {
+<a class="jxr_linenumber" name="243" href="#243">243</a> addState(state, Integer.MAX_VALUE);
+<a class="jxr_linenumber" name="244" href="#244">244</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
+<a class="jxr_linenumber" name="245" href="#245">245</a> }
+<a class="jxr_linenumber" name="246" href="#246">246</a>
+<a class="jxr_linenumber" name="247" href="#247">247</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="248" href="#248">248</a> <em class="jxr_javadoccomment"> * Define all legal transitions between states using this method. Priority</em>
+<a class="jxr_linenumber" name="249" href="#249">249</a> <em class="jxr_javadoccomment"> * is used to order the transitions. Helix tries to maximize the number of</em>
+<a class="jxr_linenumber" name="250" href="#250">250</a> <em class="jxr_javadoccomment"> * transitions that can be fired in parallel without violating the</em>
+<a class="jxr_linenumber" name="251" href="#251">251</a> <em class="jxr_javadoccomment"> * constraint. The transitions are first sorted based on priority and</em>
+<a class="jxr_linenumber" name="252" href="#252">252</a> <em class="jxr_javadoccomment"> * transitions are selected in a greedy way until the constriants are not</em>
+<a class="jxr_linenumber" name="253" href="#253">253</a> <em class="jxr_javadoccomment"> * violated.</em>
+<a class="jxr_linenumber" name="254" href="#254">254</a> <em class="jxr_javadoccomment"> * @param fromState source</em>
+<a class="jxr_linenumber" name="255" href="#255">255</a> <em class="jxr_javadoccomment"> * @param toState destination</em>
+<a class="jxr_linenumber" name="256" href="#256">256</a> <em class="jxr_javadoccomment"> * @param priority priority, higher value is higher priority</em>
+<a class="jxr_linenumber" name="257" href="#257">257</a> <em class="jxr_javadoccomment"> * @return Builder</em>
+<a class="jxr_linenumber" name="258" href="#258">258</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="259" href="#259">259</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> addTransition(String fromState, String toState, <strong class="jxr_keyword">int</strong> priority) {
+<a class="jxr_linenumber" name="260" href="#260">260</a> transitionMap.put(<strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/helix/model/Transition.html">Transition</a>(fromState, toState), priority);
+<a class="jxr_linenumber" name="261" href="#261">261</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
+<a class="jxr_linenumber" name="262" href="#262">262</a> }
+<a class="jxr_linenumber" name="263" href="#263">263</a>
+<a class="jxr_linenumber" name="264" href="#264">264</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="265" href="#265">265</a> <em class="jxr_javadoccomment"> * Add a state transition with maximal priority value</em>
+<a class="jxr_linenumber" name="266" href="#266">266</a> <em class="jxr_javadoccomment"> * @see #addTransition(String, String, int)</em>
+<a class="jxr_linenumber" name="267" href="#267">267</a> <em class="jxr_javadoccomment"> * @param fromState</em>
+<a class="jxr_linenumber" name="268" href="#268">268</a> <em class="jxr_javadoccomment"> * @param toState</em>
+<a class="jxr_linenumber" name="269" href="#269">269</a> <em class="jxr_javadoccomment"> * @return Builder</em>
+<a class="jxr_linenumber" name="270" href="#270">270</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="271" href="#271">271</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> addTransition(String fromState, String toState) {
+<a class="jxr_linenumber" name="272" href="#272">272</a> addTransition(fromState, toState, Integer.MAX_VALUE);
+<a class="jxr_linenumber" name="273" href="#273">273</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
+<a class="jxr_linenumber" name="274" href="#274">274</a> }
+<a class="jxr_linenumber" name="275" href="#275">275</a>
+<a class="jxr_linenumber" name="276" href="#276">276</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="277" href="#277">277</a> <em class="jxr_javadoccomment"> * Set a maximum for replicas in this state</em>
+<a class="jxr_linenumber" name="278" href="#278">278</a> <em class="jxr_javadoccomment"> * @param state state name</em>
+<a class="jxr_linenumber" name="279" href="#279">279</a> <em class="jxr_javadoccomment"> * @param upperBound maximum</em>
+<a class="jxr_linenumber" name="280" href="#280">280</a> <em class="jxr_javadoccomment"> * @return Builder</em>
+<a class="jxr_linenumber" name="281" href="#281">281</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="282" href="#282">282</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> upperBound(String state, <strong class="jxr_keyword">int</strong> upperBound) {
+<a class="jxr_linenumber" name="283" href="#283">283</a> stateConstraintMap.put(state, String.valueOf(upperBound));
+<a class="jxr_linenumber" name="284" href="#284">284</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
+<a class="jxr_linenumber" name="285" href="#285">285</a> }
+<a class="jxr_linenumber" name="286" href="#286">286</a>
+<a class="jxr_linenumber" name="287" href="#287">287</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="288" href="#288">288</a> <em class="jxr_javadoccomment"> * You can use this to have the bounds dynamically change based on other</em>
+<a class="jxr_linenumber" name="289" href="#289">289</a> <em class="jxr_javadoccomment"> * parameters. <br/></em>
+<a class="jxr_linenumber" name="290" href="#290">290</a> <em class="jxr_javadoccomment"> * Currently support 2 values <br/></em>
+<a class="jxr_linenumber" name="291" href="#291">291</a> <em class="jxr_javadoccomment"> * R --> Refers to the number of replicas specified during resource</em>
+<a class="jxr_linenumber" name="292" href="#292">292</a> <em class="jxr_javadoccomment"> * creation. This allows having different replication factor for each</em>
+<a class="jxr_linenumber" name="293" href="#293">293</a> <em class="jxr_javadoccomment"> * resource without having to create a different state machine. <br/></em>
+<a class="jxr_linenumber" name="294" href="#294">294</a> <em class="jxr_javadoccomment"> * N --> Refers to all nodes in the cluster. Useful for resources that need</em>
+<a class="jxr_linenumber" name="295" href="#295">295</a> <em class="jxr_javadoccomment"> * to exist on all nodes. This way one can add/remove nodes without having</em>
+<a class="jxr_linenumber" name="296" href="#296">296</a> <em class="jxr_javadoccomment"> * the change the bounds.</em>
+<a class="jxr_linenumber" name="297" href="#297">297</a> <em class="jxr_javadoccomment"> * @param state</em>
+<a class="jxr_linenumber" name="298" href="#298">298</a> <em class="jxr_javadoccomment"> * @param bound</em>
+<a class="jxr_linenumber" name="299" href="#299">299</a> <em class="jxr_javadoccomment"> * @return Builder</em>
+<a class="jxr_linenumber" name="300" href="#300">300</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="301" href="#301">301</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/PropertyKey.html">Builder</a> dynamicUpperBound(String state, String bound) {
+<a class="jxr_linenumber" name="302" href="#302">302</a> stateConstraintMap.put(state, bound);
+<a class="jxr_linenumber" name="303" href="#303">303</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
+<a class="jxr_linenumber" name="304" href="#304">304</a> }
+<a class="jxr_linenumber" name="305" href="#305">305</a>
+<a class="jxr_linenumber" name="306" href="#306">306</a> <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="307" href="#307">307</a> <em class="jxr_javadoccomment"> * Create a StateModelDefinition from this Builder</em>
+<a class="jxr_linenumber" name="308" href="#308">308</a> <em class="jxr_javadoccomment"> * @return StateModelDefinition</em>
+<a class="jxr_linenumber" name="309" href="#309">309</a> <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="310" href="#310">310</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/model/StateModelDefinition.html">StateModelDefinition</a> build() {
+<a class="jxr_linenumber" name="311" href="#311">311</a> <a href="../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/helix/ZNRecord.html">ZNRecord</a>(_statemodelName);
+<a class="jxr_linenumber" name="312" href="#312">312</a>
+<a class="jxr_linenumber" name="313" href="#313">313</a> <em class="jxr_comment">// get sorted state priorities by specified values</em>
+<a class="jxr_linenumber" name="314" href="#314">314</a> ArrayList<String> statePriorityList = <strong class="jxr_keyword">new</strong> ArrayList<String>(statesMap.keySet());
+<a class="jxr_linenumber" name="315" href="#315">315</a> Comparator<? <strong class="jxr_keyword">super</strong> String> c1 = <strong class="jxr_keyword">new</strong> Comparator<String>() {
+<a class="jxr_linenumber" name="316" href="#316">316</a>
+<a class="jxr_linenumber" name="317" href="#317">317</a> @Override
+<a class="jxr_linenumber" name="318" href="#318">318</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> compare(String o1, String o2) {
+<a class="jxr_linenumber" name="319" href="#319">319</a> <strong class="jxr_keyword">return</strong> statesMap.get(o1).compareTo(statesMap.get(o2));
+<a class="jxr_linenumber" name="320" href="#320">320</a> }
+<a class="jxr_linenumber" name="321" href="#321">321</a> };
+<a class="jxr_linenumber" name="322" href="#322">322</a> Collections.sort(statePriorityList, c1);
+<a class="jxr_linenumber" name="323" href="#323">323</a>
+<a class="jxr_linenumber" name="324" href="#324">324</a> <em class="jxr_comment">// get sorted transition priorities by specified values</em>
+<a class="jxr_linenumber" name="325" href="#325">325</a> ArrayList<Transition> transitionList = <strong class="jxr_keyword">new</strong> ArrayList<Transition>(transitionMap.keySet());
+<a class="jxr_linenumber" name="326" href="#326">326</a> Comparator<? <strong class="jxr_keyword">super</strong> Transition> c2 = <strong class="jxr_keyword">new</strong> Comparator<Transition>() {
+<a class="jxr_linenumber" name="327" href="#327">327</a> @Override
+<a class="jxr_linenumber" name="328" href="#328">328</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> compare(<a href="../../../../org/apache/helix/model/Transition.html">Transition</a> o1, <a href="../../../../org/apache/helix/model/Transition.html">Transition</a> o2) {
+<a class="jxr_linenumber" name="329" href="#329">329</a> <strong class="jxr_keyword">return</strong> transitionMap.get(o1).compareTo(transitionMap.get(o2));
+<a class="jxr_linenumber" name="330" href="#330">330</a> }
+<a class="jxr_linenumber" name="331" href="#331">331</a> };
+<a class="jxr_linenumber" name="332" href="#332">332</a> Collections.sort(transitionList, c2);
+<a class="jxr_linenumber" name="333" href="#333">333</a> List<String> transitionPriorityList = <strong class="jxr_keyword">new</strong> ArrayList<String>(transitionList.size());
+<a class="jxr_linenumber" name="334" href="#334">334</a> <strong class="jxr_keyword">for</strong> (Transition t : transitionList) {
+<a class="jxr_linenumber" name="335" href="#335">335</a> transitionPriorityList.add(t.toString());
+<a class="jxr_linenumber" name="336" href="#336">336</a> }
+<a class="jxr_linenumber" name="337" href="#337">337</a>
+<a class="jxr_linenumber" name="338" href="#338">338</a> record.setSimpleField(StateModelDefinitionProperty.INITIAL_STATE.toString(), initialState);
+<a class="jxr_linenumber" name="339" href="#339">339</a> record.setListField(StateModelDefinitionProperty.STATE_PRIORITY_LIST.toString(),
+<a class="jxr_linenumber" name="340" href="#340">340</a> statePriorityList);
+<a class="jxr_linenumber" name="341" href="#341">341</a> record.setListField(StateModelDefinitionProperty.STATE_TRANSITION_PRIORITYLIST.toString(),
+<a class="jxr_linenumber" name="342" href="#342">342</a> transitionPriorityList);
+<a class="jxr_linenumber" name="343" href="#343">343</a>
+<a class="jxr_linenumber" name="344" href="#344">344</a> <em class="jxr_comment">// compute full paths for next states</em>
+<a class="jxr_linenumber" name="345" href="#345">345</a> <a href="../../../../org/apache/helix/model/builder/StateTransitionTableBuilder.html">StateTransitionTableBuilder</a> stateTransitionTableBuilder = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/helix/model/builder/StateTransitionTableBuilder.html">StateTransitionTableBuilder</a>();
+<a class="jxr_linenumber" name="346" href="#346">346</a> Map<String, Map<String, String>> transitionTable =
+<a class="jxr_linenumber" name="347" href="#347">347</a> stateTransitionTableBuilder.buildTransitionTable(statePriorityList,
+<a class="jxr_linenumber" name="348" href="#348">348</a> <strong class="jxr_keyword">new</strong> ArrayList<Transition>(transitionMap.keySet()));
+<a class="jxr_linenumber" name="349" href="#349">349</a> <strong class="jxr_keyword">for</strong> (String state : transitionTable.keySet()) {
+<a class="jxr_linenumber" name="350" href="#350">350</a> record.setMapField(state + <span class="jxr_string">".next"</span>, transitionTable.get(state));
+<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_comment">// state counts</em>
+<a class="jxr_linenumber" name="354" href="#354">354</a> <strong class="jxr_keyword">for</strong> (String state : statePriorityList) {
+<a class="jxr_linenumber" name="355" href="#355">355</a> HashMap<String, String> metadata = <strong class="jxr_keyword">new</strong> HashMap<String, String>();
+<a class="jxr_linenumber" name="356" href="#356">356</a> <strong class="jxr_keyword">if</strong> (stateConstraintMap.get(state) != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="357" href="#357">357</a> metadata.put(<span class="jxr_string">"count"</span>, stateConstraintMap.get(state));
+<a class="jxr_linenumber" name="358" href="#358">358</a> } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="359" href="#359">359</a> metadata.put(<span class="jxr_string">"count"</span>, <span class="jxr_string">"-1"</span>);
+<a class="jxr_linenumber" name="360" href="#360">360</a> }
+<a class="jxr_linenumber" name="361" href="#361">361</a> record.setMapField(state + <span class="jxr_string">".meta"</span>, metadata);
+<a class="jxr_linenumber" name="362" href="#362">362</a> }
+<a class="jxr_linenumber" name="363" href="#363">363</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/helix/model/StateModelDefinition.html">StateModelDefinition</a>(record);
+<a class="jxr_linenumber" name="364" href="#364">364</a> }
+<a class="jxr_linenumber" name="365" href="#365">365</a>
+<a class="jxr_linenumber" name="366" href="#366">366</a> }
+<a class="jxr_linenumber" name="367" href="#367">367</a>
+<a class="jxr_linenumber" name="368" href="#368">368</a> }
</pre>
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