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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
<span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
<span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
<span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a>
<span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a>
<span class="sourceLineNo">017</span> */<a name="line.17"></a>
<span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.master;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.io.Serializable;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.util.Comparator;<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.ServerName;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.26"></a>
<span class="sourceLineNo">027</span><a name="line.27"></a>
<span class="sourceLineNo">028</span>/**<a name="line.28"></a>
<span class="sourceLineNo">029</span> * Stores the plan for the move of an individual region.<a name="line.29"></a>
<span class="sourceLineNo">030</span> *<a name="line.30"></a>
<span class="sourceLineNo">031</span> * Contains info for the region being moved, info for the server the region<a name="line.31"></a>
<span class="sourceLineNo">032</span> * should be moved from, and info for the server the region should be moved<a name="line.32"></a>
<span class="sourceLineNo">033</span> * to.<a name="line.33"></a>
<span class="sourceLineNo">034</span> *<a name="line.34"></a>
<span class="sourceLineNo">035</span> * The comparable implementation of this class compares only the region<a name="line.35"></a>
<span class="sourceLineNo">036</span> * information and not the source/dest server info.<a name="line.36"></a>
<span class="sourceLineNo">037</span> */<a name="line.37"></a>
<span class="sourceLineNo">038</span>@InterfaceAudience.LimitedPrivate("Coprocessors")<a name="line.38"></a>
<span class="sourceLineNo">039</span>@InterfaceStability.Evolving<a name="line.39"></a>
<span class="sourceLineNo">040</span>public class RegionPlan implements Comparable&lt;RegionPlan&gt; {<a name="line.40"></a>
<span class="sourceLineNo">041</span> private final RegionInfo hri;<a name="line.41"></a>
<span class="sourceLineNo">042</span> private final ServerName source;<a name="line.42"></a>
<span class="sourceLineNo">043</span> private ServerName dest;<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span> public static class RegionPlanComparator implements Comparator&lt;RegionPlan&gt;, Serializable {<a name="line.45"></a>
<span class="sourceLineNo">046</span> private static final long serialVersionUID = 4213207330485734853L;<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span> @Override<a name="line.48"></a>
<span class="sourceLineNo">049</span> public int compare(RegionPlan l, RegionPlan r) {<a name="line.49"></a>
<span class="sourceLineNo">050</span> return RegionPlan.compareTo(l, r);<a name="line.50"></a>
<span class="sourceLineNo">051</span> }<a name="line.51"></a>
<span class="sourceLineNo">052</span> }<a name="line.52"></a>
<span class="sourceLineNo">053</span><a name="line.53"></a>
<span class="sourceLineNo">054</span> /**<a name="line.54"></a>
<span class="sourceLineNo">055</span> * Instantiate a plan for a region move, moving the specified region from<a name="line.55"></a>
<span class="sourceLineNo">056</span> * the specified source server to the specified destination server.<a name="line.56"></a>
<span class="sourceLineNo">057</span> *<a name="line.57"></a>
<span class="sourceLineNo">058</span> * Destination server can be instantiated as null and later set<a name="line.58"></a>
<span class="sourceLineNo">059</span> * with {@link #setDestination(ServerName)}.<a name="line.59"></a>
<span class="sourceLineNo">060</span> *<a name="line.60"></a>
<span class="sourceLineNo">061</span> * @param hri region to be moved<a name="line.61"></a>
<span class="sourceLineNo">062</span> * @param source regionserver region should be moved from<a name="line.62"></a>
<span class="sourceLineNo">063</span> * @param dest regionserver region should be moved to<a name="line.63"></a>
<span class="sourceLineNo">064</span> */<a name="line.64"></a>
<span class="sourceLineNo">065</span> public RegionPlan(final RegionInfo hri, ServerName source, ServerName dest) {<a name="line.65"></a>
<span class="sourceLineNo">066</span> this.hri = hri;<a name="line.66"></a>
<span class="sourceLineNo">067</span> this.source = source;<a name="line.67"></a>
<span class="sourceLineNo">068</span> this.dest = dest;<a name="line.68"></a>
<span class="sourceLineNo">069</span> }<a name="line.69"></a>
<span class="sourceLineNo">070</span><a name="line.70"></a>
<span class="sourceLineNo">071</span> /**<a name="line.71"></a>
<span class="sourceLineNo">072</span> * Set the destination server for the plan for this region.<a name="line.72"></a>
<span class="sourceLineNo">073</span> */<a name="line.73"></a>
<span class="sourceLineNo">074</span> public void setDestination(ServerName dest) {<a name="line.74"></a>
<span class="sourceLineNo">075</span> this.dest = dest;<a name="line.75"></a>
<span class="sourceLineNo">076</span> }<a name="line.76"></a>
<span class="sourceLineNo">077</span><a name="line.77"></a>
<span class="sourceLineNo">078</span> /**<a name="line.78"></a>
<span class="sourceLineNo">079</span> * Get the source server for the plan for this region.<a name="line.79"></a>
<span class="sourceLineNo">080</span> * @return server info for source<a name="line.80"></a>
<span class="sourceLineNo">081</span> */<a name="line.81"></a>
<span class="sourceLineNo">082</span> public ServerName getSource() {<a name="line.82"></a>
<span class="sourceLineNo">083</span> return source;<a name="line.83"></a>
<span class="sourceLineNo">084</span> }<a name="line.84"></a>
<span class="sourceLineNo">085</span><a name="line.85"></a>
<span class="sourceLineNo">086</span> /**<a name="line.86"></a>
<span class="sourceLineNo">087</span> * Get the destination server for the plan for this region.<a name="line.87"></a>
<span class="sourceLineNo">088</span> * @return server info for destination<a name="line.88"></a>
<span class="sourceLineNo">089</span> */<a name="line.89"></a>
<span class="sourceLineNo">090</span> public ServerName getDestination() {<a name="line.90"></a>
<span class="sourceLineNo">091</span> return dest;<a name="line.91"></a>
<span class="sourceLineNo">092</span> }<a name="line.92"></a>
<span class="sourceLineNo">093</span><a name="line.93"></a>
<span class="sourceLineNo">094</span> /**<a name="line.94"></a>
<span class="sourceLineNo">095</span> * Get the encoded region name for the region this plan is for.<a name="line.95"></a>
<span class="sourceLineNo">096</span> * @return Encoded region name<a name="line.96"></a>
<span class="sourceLineNo">097</span> */<a name="line.97"></a>
<span class="sourceLineNo">098</span> public String getRegionName() {<a name="line.98"></a>
<span class="sourceLineNo">099</span> return this.hri.getEncodedName();<a name="line.99"></a>
<span class="sourceLineNo">100</span> }<a name="line.100"></a>
<span class="sourceLineNo">101</span><a name="line.101"></a>
<span class="sourceLineNo">102</span> public RegionInfo getRegionInfo() {<a name="line.102"></a>
<span class="sourceLineNo">103</span> return this.hri;<a name="line.103"></a>
<span class="sourceLineNo">104</span> }<a name="line.104"></a>
<span class="sourceLineNo">105</span><a name="line.105"></a>
<span class="sourceLineNo">106</span> /**<a name="line.106"></a>
<span class="sourceLineNo">107</span> * Compare the region info.<a name="line.107"></a>
<span class="sourceLineNo">108</span> * @param other region plan you are comparing against<a name="line.108"></a>
<span class="sourceLineNo">109</span> */<a name="line.109"></a>
<span class="sourceLineNo">110</span> @Override<a name="line.110"></a>
<span class="sourceLineNo">111</span> public int compareTo(RegionPlan other) {<a name="line.111"></a>
<span class="sourceLineNo">112</span> return compareTo(this, other);<a name="line.112"></a>
<span class="sourceLineNo">113</span> }<a name="line.113"></a>
<span class="sourceLineNo">114</span><a name="line.114"></a>
<span class="sourceLineNo">115</span> private static int compareTo(RegionPlan left, RegionPlan right) {<a name="line.115"></a>
<span class="sourceLineNo">116</span> int result = compareServerName(left.source, right.source);<a name="line.116"></a>
<span class="sourceLineNo">117</span> if (result != 0) {<a name="line.117"></a>
<span class="sourceLineNo">118</span> return result;<a name="line.118"></a>
<span class="sourceLineNo">119</span> }<a name="line.119"></a>
<span class="sourceLineNo">120</span> if (left.hri == null) {<a name="line.120"></a>
<span class="sourceLineNo">121</span> if (right.hri != null) {<a name="line.121"></a>
<span class="sourceLineNo">122</span> return -1;<a name="line.122"></a>
<span class="sourceLineNo">123</span> }<a name="line.123"></a>
<span class="sourceLineNo">124</span> } else if (right.hri == null) {<a name="line.124"></a>
<span class="sourceLineNo">125</span> return +1;<a name="line.125"></a>
<span class="sourceLineNo">126</span> } else {<a name="line.126"></a>
<span class="sourceLineNo">127</span> result = RegionInfo.COMPARATOR.compare(left.hri, right.hri);<a name="line.127"></a>
<span class="sourceLineNo">128</span> }<a name="line.128"></a>
<span class="sourceLineNo">129</span> if (result != 0) {<a name="line.129"></a>
<span class="sourceLineNo">130</span> return result;<a name="line.130"></a>
<span class="sourceLineNo">131</span> }<a name="line.131"></a>
<span class="sourceLineNo">132</span> return compareServerName(left.dest, right.dest);<a name="line.132"></a>
<span class="sourceLineNo">133</span> }<a name="line.133"></a>
<span class="sourceLineNo">134</span><a name="line.134"></a>
<span class="sourceLineNo">135</span> private static int compareServerName(ServerName left, ServerName right) {<a name="line.135"></a>
<span class="sourceLineNo">136</span> if (left == null) {<a name="line.136"></a>
<span class="sourceLineNo">137</span> return right == null? 0: -1;<a name="line.137"></a>
<span class="sourceLineNo">138</span> } else if (right == null) {<a name="line.138"></a>
<span class="sourceLineNo">139</span> return +1;<a name="line.139"></a>
<span class="sourceLineNo">140</span> }<a name="line.140"></a>
<span class="sourceLineNo">141</span> return left.compareTo(right);<a name="line.141"></a>
<span class="sourceLineNo">142</span> }<a name="line.142"></a>
<span class="sourceLineNo">143</span><a name="line.143"></a>
<span class="sourceLineNo">144</span> @Override<a name="line.144"></a>
<span class="sourceLineNo">145</span> public int hashCode() {<a name="line.145"></a>
<span class="sourceLineNo">146</span> final int prime = 31;<a name="line.146"></a>
<span class="sourceLineNo">147</span> int result = 1;<a name="line.147"></a>
<span class="sourceLineNo">148</span> result = prime * result + ((dest == null) ? 0 : dest.hashCode());<a name="line.148"></a>
<span class="sourceLineNo">149</span> result = prime * result + ((hri == null) ? 0 : hri.hashCode());<a name="line.149"></a>
<span class="sourceLineNo">150</span> result = prime * result + ((source == null) ? 0 : source.hashCode());<a name="line.150"></a>
<span class="sourceLineNo">151</span> return result;<a name="line.151"></a>
<span class="sourceLineNo">152</span> }<a name="line.152"></a>
<span class="sourceLineNo">153</span><a name="line.153"></a>
<span class="sourceLineNo">154</span> @Override<a name="line.154"></a>
<span class="sourceLineNo">155</span> public boolean equals(Object obj) {<a name="line.155"></a>
<span class="sourceLineNo">156</span> if (this == obj) {<a name="line.156"></a>
<span class="sourceLineNo">157</span> return true;<a name="line.157"></a>
<span class="sourceLineNo">158</span> }<a name="line.158"></a>
<span class="sourceLineNo">159</span> if (obj == null) {<a name="line.159"></a>
<span class="sourceLineNo">160</span> return false;<a name="line.160"></a>
<span class="sourceLineNo">161</span> }<a name="line.161"></a>
<span class="sourceLineNo">162</span> if (getClass() != obj.getClass()) {<a name="line.162"></a>
<span class="sourceLineNo">163</span> return false;<a name="line.163"></a>
<span class="sourceLineNo">164</span> }<a name="line.164"></a>
<span class="sourceLineNo">165</span> RegionPlan other = (RegionPlan) obj;<a name="line.165"></a>
<span class="sourceLineNo">166</span> if (dest == null) {<a name="line.166"></a>
<span class="sourceLineNo">167</span> if (other.dest != null) {<a name="line.167"></a>
<span class="sourceLineNo">168</span> return false;<a name="line.168"></a>
<span class="sourceLineNo">169</span> }<a name="line.169"></a>
<span class="sourceLineNo">170</span> } else if (!dest.equals(other.dest)) {<a name="line.170"></a>
<span class="sourceLineNo">171</span> return false;<a name="line.171"></a>
<span class="sourceLineNo">172</span> }<a name="line.172"></a>
<span class="sourceLineNo">173</span> if (hri == null) {<a name="line.173"></a>
<span class="sourceLineNo">174</span> if (other.hri != null) {<a name="line.174"></a>
<span class="sourceLineNo">175</span> return false;<a name="line.175"></a>
<span class="sourceLineNo">176</span> }<a name="line.176"></a>
<span class="sourceLineNo">177</span> } else if (!hri.equals(other.hri)) {<a name="line.177"></a>
<span class="sourceLineNo">178</span> return false;<a name="line.178"></a>
<span class="sourceLineNo">179</span> }<a name="line.179"></a>
<span class="sourceLineNo">180</span> if (source == null) {<a name="line.180"></a>
<span class="sourceLineNo">181</span> if (other.source != null) {<a name="line.181"></a>
<span class="sourceLineNo">182</span> return false;<a name="line.182"></a>
<span class="sourceLineNo">183</span> }<a name="line.183"></a>
<span class="sourceLineNo">184</span> } else if (!source.equals(other.source)) {<a name="line.184"></a>
<span class="sourceLineNo">185</span> return false;<a name="line.185"></a>
<span class="sourceLineNo">186</span> }<a name="line.186"></a>
<span class="sourceLineNo">187</span> return true;<a name="line.187"></a>
<span class="sourceLineNo">188</span> }<a name="line.188"></a>
<span class="sourceLineNo">189</span><a name="line.189"></a>
<span class="sourceLineNo">190</span> @Override<a name="line.190"></a>
<span class="sourceLineNo">191</span> public String toString() {<a name="line.191"></a>
<span class="sourceLineNo">192</span> return "hri=" + this.hri.getEncodedName() + ", source=" +<a name="line.192"></a>
<span class="sourceLineNo">193</span> (this.source == null? "": this.source.toString()) +<a name="line.193"></a>
<span class="sourceLineNo">194</span> ", destination=" + (this.dest == null? "": this.dest.toString());<a name="line.194"></a>
<span class="sourceLineNo">195</span> }<a name="line.195"></a>
<span class="sourceLineNo">196</span>}<a name="line.196"></a>
</pre>
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