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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.client;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import static org.junit.Assert.assertArrayEquals;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import static org.junit.Assert.assertEquals;<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.io.IOException;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.util.Collections;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.List;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.HBaseTestingUtil;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.HConstants;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.ServerName;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.TableName;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.regionserver.Region;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.security.User;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.junit.After;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.junit.Test;<a name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
<span class="sourceLineNo">038</span>public abstract class AbstractTestRegionLocator {<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span> protected static final HBaseTestingUtil UTIL = new HBaseTestingUtil();<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span> protected static TableName TABLE_NAME = TableName.valueOf("Locator");<a name="line.42"></a>
<span class="sourceLineNo">043</span><a name="line.43"></a>
<span class="sourceLineNo">044</span> protected static byte[] FAMILY = Bytes.toBytes("family");<a name="line.44"></a>
<span class="sourceLineNo">045</span><a name="line.45"></a>
<span class="sourceLineNo">046</span> protected static int REGION_REPLICATION = 3;<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span> protected static byte[][] SPLIT_KEYS;<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span> protected static void startClusterAndCreateTable() throws Exception {<a name="line.50"></a>
<span class="sourceLineNo">051</span> UTIL.startMiniCluster(3);<a name="line.51"></a>
<span class="sourceLineNo">052</span> HBaseTestingUtil.setReplicas(UTIL.getAdmin(), TableName.META_TABLE_NAME, REGION_REPLICATION);<a name="line.52"></a>
<span class="sourceLineNo">053</span> TableDescriptor td =<a name="line.53"></a>
<span class="sourceLineNo">054</span> TableDescriptorBuilder.newBuilder(TABLE_NAME).setRegionReplication(REGION_REPLICATION)<a name="line.54"></a>
<span class="sourceLineNo">055</span> .setColumnFamily(ColumnFamilyDescriptorBuilder.of(FAMILY)).build();<a name="line.55"></a>
<span class="sourceLineNo">056</span> SPLIT_KEYS = new byte[9][];<a name="line.56"></a>
<span class="sourceLineNo">057</span> for (int i = 0; i &lt; 9; i++) {<a name="line.57"></a>
<span class="sourceLineNo">058</span> SPLIT_KEYS[i] = Bytes.toBytes(Integer.toString(i + 1));<a name="line.58"></a>
<span class="sourceLineNo">059</span> }<a name="line.59"></a>
<span class="sourceLineNo">060</span> UTIL.getAdmin().createTable(td, SPLIT_KEYS);<a name="line.60"></a>
<span class="sourceLineNo">061</span> UTIL.waitTableAvailable(TABLE_NAME);<a name="line.61"></a>
<span class="sourceLineNo">062</span> try (ConnectionRegistry registry =<a name="line.62"></a>
<span class="sourceLineNo">063</span> ConnectionRegistryFactory.create(UTIL.getConfiguration(), User.getCurrent())) {<a name="line.63"></a>
<span class="sourceLineNo">064</span> RegionReplicaTestHelper.waitUntilAllMetaReplicasAreReady(UTIL, registry);<a name="line.64"></a>
<span class="sourceLineNo">065</span> }<a name="line.65"></a>
<span class="sourceLineNo">066</span> UTIL.getAdmin().balancerSwitch(false, true);<a name="line.66"></a>
<span class="sourceLineNo">067</span> }<a name="line.67"></a>
<span class="sourceLineNo">068</span><a name="line.68"></a>
<span class="sourceLineNo">069</span> @After<a name="line.69"></a>
<span class="sourceLineNo">070</span> public void tearDownAfterTest() throws IOException {<a name="line.70"></a>
<span class="sourceLineNo">071</span> clearCache(TABLE_NAME);<a name="line.71"></a>
<span class="sourceLineNo">072</span> clearCache(TableName.META_TABLE_NAME);<a name="line.72"></a>
<span class="sourceLineNo">073</span> }<a name="line.73"></a>
<span class="sourceLineNo">074</span><a name="line.74"></a>
<span class="sourceLineNo">075</span> private byte[] getStartKey(int index) {<a name="line.75"></a>
<span class="sourceLineNo">076</span> return index == 0 ? HConstants.EMPTY_START_ROW : SPLIT_KEYS[index - 1];<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> private byte[] getEndKey(int index) {<a name="line.79"></a>
<span class="sourceLineNo">080</span> return index == SPLIT_KEYS.length ? HConstants.EMPTY_END_ROW : SPLIT_KEYS[index];<a name="line.80"></a>
<span class="sourceLineNo">081</span> }<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span> private void assertStartKeys(byte[][] startKeys) {<a name="line.83"></a>
<span class="sourceLineNo">084</span> assertEquals(SPLIT_KEYS.length + 1, startKeys.length);<a name="line.84"></a>
<span class="sourceLineNo">085</span> for (int i = 0; i &lt; startKeys.length; i++) {<a name="line.85"></a>
<span class="sourceLineNo">086</span> assertArrayEquals(getStartKey(i), startKeys[i]);<a name="line.86"></a>
<span class="sourceLineNo">087</span> }<a name="line.87"></a>
<span class="sourceLineNo">088</span> }<a name="line.88"></a>
<span class="sourceLineNo">089</span><a name="line.89"></a>
<span class="sourceLineNo">090</span> private void assertEndKeys(byte[][] endKeys) {<a name="line.90"></a>
<span class="sourceLineNo">091</span> assertEquals(SPLIT_KEYS.length + 1, endKeys.length);<a name="line.91"></a>
<span class="sourceLineNo">092</span> for (int i = 0; i &lt; endKeys.length; i++) {<a name="line.92"></a>
<span class="sourceLineNo">093</span> assertArrayEquals(getEndKey(i), endKeys[i]);<a name="line.93"></a>
<span class="sourceLineNo">094</span> }<a name="line.94"></a>
<span class="sourceLineNo">095</span> }<a name="line.95"></a>
<span class="sourceLineNo">096</span><a name="line.96"></a>
<span class="sourceLineNo">097</span> @Test<a name="line.97"></a>
<span class="sourceLineNo">098</span> public void testStartEndKeys() throws IOException {<a name="line.98"></a>
<span class="sourceLineNo">099</span> assertStartKeys(getStartKeys(TABLE_NAME));<a name="line.99"></a>
<span class="sourceLineNo">100</span> assertEndKeys(getEndKeys(TABLE_NAME));<a name="line.100"></a>
<span class="sourceLineNo">101</span> Pair&lt;byte[][], byte[][]&gt; startEndKeys = getStartEndKeys(TABLE_NAME);<a name="line.101"></a>
<span class="sourceLineNo">102</span> assertStartKeys(startEndKeys.getFirst());<a name="line.102"></a>
<span class="sourceLineNo">103</span> assertEndKeys(startEndKeys.getSecond());<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> private void assertRegionLocation(HRegionLocation loc, int index, int replicaId) {<a name="line.106"></a>
<span class="sourceLineNo">107</span> RegionInfo region = loc.getRegion();<a name="line.107"></a>
<span class="sourceLineNo">108</span> byte[] startKey = getStartKey(index);<a name="line.108"></a>
<span class="sourceLineNo">109</span> assertArrayEquals(startKey, region.getStartKey());<a name="line.109"></a>
<span class="sourceLineNo">110</span> assertArrayEquals(getEndKey(index), region.getEndKey());<a name="line.110"></a>
<span class="sourceLineNo">111</span> assertEquals(replicaId, region.getReplicaId());<a name="line.111"></a>
<span class="sourceLineNo">112</span> ServerName expected = findRegionLocation(TABLE_NAME, region.getStartKey(), replicaId);<a name="line.112"></a>
<span class="sourceLineNo">113</span> assertEquals(expected, loc.getServerName());<a name="line.113"></a>
<span class="sourceLineNo">114</span> }<a name="line.114"></a>
<span class="sourceLineNo">115</span><a name="line.115"></a>
<span class="sourceLineNo">116</span> private ServerName findRegionLocation(TableName tableName, byte[] startKey, int replicaId) {<a name="line.116"></a>
<span class="sourceLineNo">117</span> return UTIL.getMiniHBaseCluster().getRegionServerThreads().stream()<a name="line.117"></a>
<span class="sourceLineNo">118</span> .map(t -&gt; t.getRegionServer())<a name="line.118"></a>
<span class="sourceLineNo">119</span> .filter(rs -&gt; rs.getRegions(tableName).stream().map(Region::getRegionInfo)<a name="line.119"></a>
<span class="sourceLineNo">120</span> .anyMatch(r -&gt; r.containsRow(startKey) &amp;&amp; r.getReplicaId() == replicaId))<a name="line.120"></a>
<span class="sourceLineNo">121</span> .findFirst().get().getServerName();<a name="line.121"></a>
<span class="sourceLineNo">122</span> }<a name="line.122"></a>
<span class="sourceLineNo">123</span><a name="line.123"></a>
<span class="sourceLineNo">124</span> @Test<a name="line.124"></a>
<span class="sourceLineNo">125</span> public void testGetRegionLocation() throws IOException {<a name="line.125"></a>
<span class="sourceLineNo">126</span> for (int i = 0; i &lt;= SPLIT_KEYS.length; i++) {<a name="line.126"></a>
<span class="sourceLineNo">127</span> for (int replicaId = 0; replicaId &lt; REGION_REPLICATION; replicaId++) {<a name="line.127"></a>
<span class="sourceLineNo">128</span> assertRegionLocation(getRegionLocation(TABLE_NAME, getStartKey(i), replicaId), i,<a name="line.128"></a>
<span class="sourceLineNo">129</span> replicaId);<a name="line.129"></a>
<span class="sourceLineNo">130</span> }<a name="line.130"></a>
<span class="sourceLineNo">131</span> }<a name="line.131"></a>
<span class="sourceLineNo">132</span> }<a name="line.132"></a>
<span class="sourceLineNo">133</span><a name="line.133"></a>
<span class="sourceLineNo">134</span> @Test<a name="line.134"></a>
<span class="sourceLineNo">135</span> public void testGetRegionLocations() throws IOException {<a name="line.135"></a>
<span class="sourceLineNo">136</span> for (int i = 0; i &lt;= SPLIT_KEYS.length; i++) {<a name="line.136"></a>
<span class="sourceLineNo">137</span> List&lt;HRegionLocation&gt; locs = getRegionLocations(TABLE_NAME, getStartKey(i));<a name="line.137"></a>
<span class="sourceLineNo">138</span> assertEquals(REGION_REPLICATION, locs.size());<a name="line.138"></a>
<span class="sourceLineNo">139</span> for (int replicaId = 0; replicaId &lt; REGION_REPLICATION; replicaId++) {<a name="line.139"></a>
<span class="sourceLineNo">140</span> assertRegionLocation(locs.get(replicaId), i, replicaId);<a name="line.140"></a>
<span class="sourceLineNo">141</span> }<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><a name="line.144"></a>
<span class="sourceLineNo">145</span> @Test<a name="line.145"></a>
<span class="sourceLineNo">146</span> public void testGetAllRegionLocations() throws IOException {<a name="line.146"></a>
<span class="sourceLineNo">147</span> List&lt;HRegionLocation&gt; locs = getAllRegionLocations(TABLE_NAME);<a name="line.147"></a>
<span class="sourceLineNo">148</span> assertEquals(REGION_REPLICATION * (SPLIT_KEYS.length + 1), locs.size());<a name="line.148"></a>
<span class="sourceLineNo">149</span> Collections.sort(locs, (l1, l2) -&gt; {<a name="line.149"></a>
<span class="sourceLineNo">150</span> int c = Bytes.compareTo(l1.getRegion().getStartKey(), l2.getRegion().getStartKey());<a name="line.150"></a>
<span class="sourceLineNo">151</span> if (c != 0) {<a name="line.151"></a>
<span class="sourceLineNo">152</span> return c;<a name="line.152"></a>
<span class="sourceLineNo">153</span> }<a name="line.153"></a>
<span class="sourceLineNo">154</span> return Integer.compare(l1.getRegion().getReplicaId(), l2.getRegion().getReplicaId());<a name="line.154"></a>
<span class="sourceLineNo">155</span> });<a name="line.155"></a>
<span class="sourceLineNo">156</span> for (int i = 0; i &lt;= SPLIT_KEYS.length; i++) {<a name="line.156"></a>
<span class="sourceLineNo">157</span> for (int replicaId = 0; replicaId &lt; REGION_REPLICATION; replicaId++) {<a name="line.157"></a>
<span class="sourceLineNo">158</span> assertRegionLocation(locs.get(i * REGION_REPLICATION + replicaId), i, replicaId);<a name="line.158"></a>
<span class="sourceLineNo">159</span> }<a name="line.159"></a>
<span class="sourceLineNo">160</span> }<a name="line.160"></a>
<span class="sourceLineNo">161</span> }<a name="line.161"></a>
<span class="sourceLineNo">162</span><a name="line.162"></a>
<span class="sourceLineNo">163</span> private void assertMetaStartOrEndKeys(byte[][] keys) {<a name="line.163"></a>
<span class="sourceLineNo">164</span> assertEquals(1, keys.length);<a name="line.164"></a>
<span class="sourceLineNo">165</span> assertArrayEquals(HConstants.EMPTY_BYTE_ARRAY, keys[0]);<a name="line.165"></a>
<span class="sourceLineNo">166</span> }<a name="line.166"></a>
<span class="sourceLineNo">167</span><a name="line.167"></a>
<span class="sourceLineNo">168</span> private void assertMetaRegionLocation(HRegionLocation loc, int replicaId) {<a name="line.168"></a>
<span class="sourceLineNo">169</span> RegionInfo region = loc.getRegion();<a name="line.169"></a>
<span class="sourceLineNo">170</span> assertArrayEquals(HConstants.EMPTY_START_ROW, region.getStartKey());<a name="line.170"></a>
<span class="sourceLineNo">171</span> assertArrayEquals(HConstants.EMPTY_END_ROW, region.getEndKey());<a name="line.171"></a>
<span class="sourceLineNo">172</span> assertEquals(replicaId, region.getReplicaId());<a name="line.172"></a>
<span class="sourceLineNo">173</span> ServerName expected =<a name="line.173"></a>
<span class="sourceLineNo">174</span> findRegionLocation(TableName.META_TABLE_NAME, region.getStartKey(), replicaId);<a name="line.174"></a>
<span class="sourceLineNo">175</span> assertEquals(expected, loc.getServerName());<a name="line.175"></a>
<span class="sourceLineNo">176</span> }<a name="line.176"></a>
<span class="sourceLineNo">177</span><a name="line.177"></a>
<span class="sourceLineNo">178</span> private void assertMetaRegionLocations(List&lt;HRegionLocation&gt; locs) {<a name="line.178"></a>
<span class="sourceLineNo">179</span> assertEquals(REGION_REPLICATION, locs.size());<a name="line.179"></a>
<span class="sourceLineNo">180</span> for (int replicaId = 0; replicaId &lt; REGION_REPLICATION; replicaId++) {<a name="line.180"></a>
<span class="sourceLineNo">181</span> assertMetaRegionLocation(locs.get(replicaId), replicaId);<a name="line.181"></a>
<span class="sourceLineNo">182</span> }<a name="line.182"></a>
<span class="sourceLineNo">183</span> }<a name="line.183"></a>
<span class="sourceLineNo">184</span><a name="line.184"></a>
<span class="sourceLineNo">185</span> @Test<a name="line.185"></a>
<span class="sourceLineNo">186</span> public void testMeta() throws IOException {<a name="line.186"></a>
<span class="sourceLineNo">187</span> assertMetaStartOrEndKeys(getStartKeys(TableName.META_TABLE_NAME));<a name="line.187"></a>
<span class="sourceLineNo">188</span> assertMetaStartOrEndKeys(getEndKeys(TableName.META_TABLE_NAME));<a name="line.188"></a>
<span class="sourceLineNo">189</span> Pair&lt;byte[][], byte[][]&gt; startEndKeys = getStartEndKeys(TableName.META_TABLE_NAME);<a name="line.189"></a>
<span class="sourceLineNo">190</span> assertMetaStartOrEndKeys(startEndKeys.getFirst());<a name="line.190"></a>
<span class="sourceLineNo">191</span> assertMetaStartOrEndKeys(startEndKeys.getSecond());<a name="line.191"></a>
<span class="sourceLineNo">192</span> for (int replicaId = 0; replicaId &lt; REGION_REPLICATION; replicaId++) {<a name="line.192"></a>
<span class="sourceLineNo">193</span> assertMetaRegionLocation(<a name="line.193"></a>
<span class="sourceLineNo">194</span> getRegionLocation(TableName.META_TABLE_NAME, HConstants.EMPTY_START_ROW, replicaId),<a name="line.194"></a>
<span class="sourceLineNo">195</span> replicaId);<a name="line.195"></a>
<span class="sourceLineNo">196</span> }<a name="line.196"></a>
<span class="sourceLineNo">197</span> assertMetaRegionLocations(<a name="line.197"></a>
<span class="sourceLineNo">198</span> getRegionLocations(TableName.META_TABLE_NAME, HConstants.EMPTY_START_ROW));<a name="line.198"></a>
<span class="sourceLineNo">199</span> assertMetaRegionLocations(getAllRegionLocations(TableName.META_TABLE_NAME));<a name="line.199"></a>
<span class="sourceLineNo">200</span> }<a name="line.200"></a>
<span class="sourceLineNo">201</span><a name="line.201"></a>
<span class="sourceLineNo">202</span> protected abstract byte[][] getStartKeys(TableName tableName) throws IOException;<a name="line.202"></a>
<span class="sourceLineNo">203</span><a name="line.203"></a>
<span class="sourceLineNo">204</span> protected abstract byte[][] getEndKeys(TableName tableName) throws IOException;<a name="line.204"></a>
<span class="sourceLineNo">205</span><a name="line.205"></a>
<span class="sourceLineNo">206</span> protected abstract Pair&lt;byte[][], byte[][]&gt; getStartEndKeys(TableName tableName)<a name="line.206"></a>
<span class="sourceLineNo">207</span> throws IOException;<a name="line.207"></a>
<span class="sourceLineNo">208</span><a name="line.208"></a>
<span class="sourceLineNo">209</span> protected abstract HRegionLocation getRegionLocation(TableName tableName, byte[] row,<a name="line.209"></a>
<span class="sourceLineNo">210</span> int replicaId) throws IOException;<a name="line.210"></a>
<span class="sourceLineNo">211</span><a name="line.211"></a>
<span class="sourceLineNo">212</span> protected abstract List&lt;HRegionLocation&gt; getRegionLocations(TableName tableName, byte[] row)<a name="line.212"></a>
<span class="sourceLineNo">213</span> throws IOException;<a name="line.213"></a>
<span class="sourceLineNo">214</span><a name="line.214"></a>
<span class="sourceLineNo">215</span> protected abstract List&lt;HRegionLocation&gt; getAllRegionLocations(TableName tableName)<a name="line.215"></a>
<span class="sourceLineNo">216</span> throws IOException;<a name="line.216"></a>
<span class="sourceLineNo">217</span><a name="line.217"></a>
<span class="sourceLineNo">218</span> protected abstract void clearCache(TableName tableName) throws IOException;<a name="line.218"></a>
<span class="sourceLineNo">219</span>}<a name="line.219"></a>
</pre>
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