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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.wal;<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.assertFalse;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import static org.junit.Assert.assertTrue;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.io.FileNotFoundException;<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.nio.ByteBuffer;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.NavigableMap;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.TreeMap;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.apache.commons.io.IOUtils;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.apache.hadoop.conf.Configuration;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.apache.hadoop.fs.FSDataInputStream;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.apache.hadoop.fs.FileStatus;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.hadoop.fs.FileSystem;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.hadoop.fs.Path;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.ByteBufferKeyValue;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HBaseTestingUtility;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.HConstants;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.KeyValue;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.ServerName;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.TableName;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.io.crypto.KeyProviderForTesting;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.regionserver.wal.ProtobufLogReader;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.regionserver.wal.SecureAsyncProtobufLogWriter;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.regionserver.wal.SecureProtobufLogReader;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.regionserver.wal.SecureProtobufLogWriter;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.regionserver.wal.SecureWALCellCodec;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.regionserver.wal.WALCellCodec;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.testclassification.RegionServerTests;<a name="line.51"></a>
<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.52"></a>
<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.53"></a>
<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.util.CommonFSUtils;<a name="line.54"></a>
<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.zookeeper.ZKSplitLog;<a name="line.55"></a>
<span class="sourceLineNo">056</span>import org.junit.BeforeClass;<a name="line.56"></a>
<span class="sourceLineNo">057</span>import org.junit.ClassRule;<a name="line.57"></a>
<span class="sourceLineNo">058</span>import org.junit.Rule;<a name="line.58"></a>
<span class="sourceLineNo">059</span>import org.junit.Test;<a name="line.59"></a>
<span class="sourceLineNo">060</span>import org.junit.experimental.categories.Category;<a name="line.60"></a>
<span class="sourceLineNo">061</span>import org.junit.rules.TestName;<a name="line.61"></a>
<span class="sourceLineNo">062</span><a name="line.62"></a>
<span class="sourceLineNo">063</span>/**<a name="line.63"></a>
<span class="sourceLineNo">064</span> * Test that verifies WAL written by SecureProtobufLogWriter is not readable by ProtobufLogReader<a name="line.64"></a>
<span class="sourceLineNo">065</span> */<a name="line.65"></a>
<span class="sourceLineNo">066</span>@Category({RegionServerTests.class, SmallTests.class})<a name="line.66"></a>
<span class="sourceLineNo">067</span>public class TestWALReaderOnSecureWAL {<a name="line.67"></a>
<span class="sourceLineNo">068</span><a name="line.68"></a>
<span class="sourceLineNo">069</span> @ClassRule<a name="line.69"></a>
<span class="sourceLineNo">070</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.70"></a>
<span class="sourceLineNo">071</span> HBaseClassTestRule.forClass(TestWALReaderOnSecureWAL.class);<a name="line.71"></a>
<span class="sourceLineNo">072</span><a name="line.72"></a>
<span class="sourceLineNo">073</span> static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();<a name="line.73"></a>
<span class="sourceLineNo">074</span> final byte[] value = Bytes.toBytes("Test value");<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span> private static final String WAL_ENCRYPTION = "hbase.regionserver.wal.encryption";<a name="line.76"></a>
<span class="sourceLineNo">077</span><a name="line.77"></a>
<span class="sourceLineNo">078</span> @Rule<a name="line.78"></a>
<span class="sourceLineNo">079</span> public TestName currentTest = new TestName();<a name="line.79"></a>
<span class="sourceLineNo">080</span><a name="line.80"></a>
<span class="sourceLineNo">081</span> @BeforeClass<a name="line.81"></a>
<span class="sourceLineNo">082</span> public static void setUpBeforeClass() throws Exception {<a name="line.82"></a>
<span class="sourceLineNo">083</span> Configuration conf = TEST_UTIL.getConfiguration();<a name="line.83"></a>
<span class="sourceLineNo">084</span> conf.set(HConstants.CRYPTO_KEYPROVIDER_CONF_KEY, KeyProviderForTesting.class.getName());<a name="line.84"></a>
<span class="sourceLineNo">085</span> conf.set(HConstants.CRYPTO_MASTERKEY_NAME_CONF_KEY, "hbase");<a name="line.85"></a>
<span class="sourceLineNo">086</span> conf.setBoolean(WALSplitter.SPLIT_SKIP_ERRORS_KEY, true);<a name="line.86"></a>
<span class="sourceLineNo">087</span> conf.setBoolean(HConstants.ENABLE_WAL_ENCRYPTION, true);<a name="line.87"></a>
<span class="sourceLineNo">088</span> CommonFSUtils.setRootDir(conf, TEST_UTIL.getDataTestDir());<a name="line.88"></a>
<span class="sourceLineNo">089</span> }<a name="line.89"></a>
<span class="sourceLineNo">090</span><a name="line.90"></a>
<span class="sourceLineNo">091</span> private Path writeWAL(final WALFactory wals, final String tblName, boolean offheap)<a name="line.91"></a>
<span class="sourceLineNo">092</span> throws IOException {<a name="line.92"></a>
<span class="sourceLineNo">093</span> Configuration conf = TEST_UTIL.getConfiguration();<a name="line.93"></a>
<span class="sourceLineNo">094</span> String clsName = conf.get(WALCellCodec.WAL_CELL_CODEC_CLASS_KEY, WALCellCodec.class.getName());<a name="line.94"></a>
<span class="sourceLineNo">095</span> conf.setClass(WALCellCodec.WAL_CELL_CODEC_CLASS_KEY, SecureWALCellCodec.class,<a name="line.95"></a>
<span class="sourceLineNo">096</span> WALCellCodec.class);<a name="line.96"></a>
<span class="sourceLineNo">097</span> try {<a name="line.97"></a>
<span class="sourceLineNo">098</span> TableName tableName = TableName.valueOf(tblName);<a name="line.98"></a>
<span class="sourceLineNo">099</span> NavigableMap&lt;byte[], Integer&gt; scopes = new TreeMap&lt;&gt;(Bytes.BYTES_COMPARATOR);<a name="line.99"></a>
<span class="sourceLineNo">100</span> scopes.put(tableName.getName(), 0);<a name="line.100"></a>
<span class="sourceLineNo">101</span> RegionInfo regionInfo = RegionInfoBuilder.newBuilder(tableName).build();<a name="line.101"></a>
<span class="sourceLineNo">102</span> final int total = 10;<a name="line.102"></a>
<span class="sourceLineNo">103</span> final byte[] row = Bytes.toBytes("row");<a name="line.103"></a>
<span class="sourceLineNo">104</span> final byte[] family = Bytes.toBytes("family");<a name="line.104"></a>
<span class="sourceLineNo">105</span> final MultiVersionConcurrencyControl mvcc = new MultiVersionConcurrencyControl(1);<a name="line.105"></a>
<span class="sourceLineNo">106</span><a name="line.106"></a>
<span class="sourceLineNo">107</span> // Write the WAL<a name="line.107"></a>
<span class="sourceLineNo">108</span> WAL wal = wals.getWAL(regionInfo);<a name="line.108"></a>
<span class="sourceLineNo">109</span> for (int i = 0; i &lt; total; i++) {<a name="line.109"></a>
<span class="sourceLineNo">110</span> WALEdit kvs = new WALEdit();<a name="line.110"></a>
<span class="sourceLineNo">111</span> KeyValue kv = new KeyValue(row, family, Bytes.toBytes(i), value);<a name="line.111"></a>
<span class="sourceLineNo">112</span> if (offheap) {<a name="line.112"></a>
<span class="sourceLineNo">113</span> ByteBuffer bb = ByteBuffer.allocateDirect(kv.getBuffer().length);<a name="line.113"></a>
<span class="sourceLineNo">114</span> bb.put(kv.getBuffer());<a name="line.114"></a>
<span class="sourceLineNo">115</span> ByteBufferKeyValue offheapKV = new ByteBufferKeyValue(bb, 0, kv.getLength());<a name="line.115"></a>
<span class="sourceLineNo">116</span> kvs.add(offheapKV);<a name="line.116"></a>
<span class="sourceLineNo">117</span> } else {<a name="line.117"></a>
<span class="sourceLineNo">118</span> kvs.add(kv);<a name="line.118"></a>
<span class="sourceLineNo">119</span> }<a name="line.119"></a>
<span class="sourceLineNo">120</span> wal.appendData(regionInfo, new WALKeyImpl(regionInfo.getEncodedNameAsBytes(), tableName,<a name="line.120"></a>
<span class="sourceLineNo">121</span> System.currentTimeMillis(), mvcc, scopes), kvs);<a name="line.121"></a>
<span class="sourceLineNo">122</span> }<a name="line.122"></a>
<span class="sourceLineNo">123</span> wal.sync();<a name="line.123"></a>
<span class="sourceLineNo">124</span> final Path walPath = AbstractFSWALProvider.getCurrentFileName(wal);<a name="line.124"></a>
<span class="sourceLineNo">125</span> wal.shutdown();<a name="line.125"></a>
<span class="sourceLineNo">126</span><a name="line.126"></a>
<span class="sourceLineNo">127</span> return walPath;<a name="line.127"></a>
<span class="sourceLineNo">128</span> } finally {<a name="line.128"></a>
<span class="sourceLineNo">129</span> // restore the cell codec class<a name="line.129"></a>
<span class="sourceLineNo">130</span> conf.set(WALCellCodec.WAL_CELL_CODEC_CLASS_KEY, clsName);<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 testWALReaderOnSecureWALWithKeyValues() throws Exception {<a name="line.135"></a>
<span class="sourceLineNo">136</span> testSecureWALInternal(false);<a name="line.136"></a>
<span class="sourceLineNo">137</span> }<a name="line.137"></a>
<span class="sourceLineNo">138</span><a name="line.138"></a>
<span class="sourceLineNo">139</span> @Test()<a name="line.139"></a>
<span class="sourceLineNo">140</span> public void testWALReaderOnSecureWALWithOffheapKeyValues() throws Exception {<a name="line.140"></a>
<span class="sourceLineNo">141</span> testSecureWALInternal(true);<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> private void testSecureWALInternal(boolean offheap) throws IOException, FileNotFoundException {<a name="line.144"></a>
<span class="sourceLineNo">145</span> Configuration conf = TEST_UTIL.getConfiguration();<a name="line.145"></a>
<span class="sourceLineNo">146</span> conf.setClass("hbase.regionserver.hlog.reader.impl", ProtobufLogReader.class,<a name="line.146"></a>
<span class="sourceLineNo">147</span> WAL.Reader.class);<a name="line.147"></a>
<span class="sourceLineNo">148</span> conf.setClass("hbase.regionserver.hlog.writer.impl", SecureProtobufLogWriter.class,<a name="line.148"></a>
<span class="sourceLineNo">149</span> WALProvider.Writer.class);<a name="line.149"></a>
<span class="sourceLineNo">150</span> conf.setClass("hbase.regionserver.hlog.async.writer.impl", SecureAsyncProtobufLogWriter.class,<a name="line.150"></a>
<span class="sourceLineNo">151</span> WALProvider.AsyncWriter.class);<a name="line.151"></a>
<span class="sourceLineNo">152</span> conf.setBoolean(WAL_ENCRYPTION, true);<a name="line.152"></a>
<span class="sourceLineNo">153</span> FileSystem fs = TEST_UTIL.getTestFileSystem();<a name="line.153"></a>
<span class="sourceLineNo">154</span> final WALFactory wals = new WALFactory(conf, currentTest.getMethodName());<a name="line.154"></a>
<span class="sourceLineNo">155</span> Path walPath = writeWAL(wals, currentTest.getMethodName(), offheap);<a name="line.155"></a>
<span class="sourceLineNo">156</span><a name="line.156"></a>
<span class="sourceLineNo">157</span> // Insure edits are not plaintext<a name="line.157"></a>
<span class="sourceLineNo">158</span> long length = fs.getFileStatus(walPath).getLen();<a name="line.158"></a>
<span class="sourceLineNo">159</span> FSDataInputStream in = fs.open(walPath);<a name="line.159"></a>
<span class="sourceLineNo">160</span> byte[] fileData = new byte[(int)length];<a name="line.160"></a>
<span class="sourceLineNo">161</span> IOUtils.readFully(in, fileData);<a name="line.161"></a>
<span class="sourceLineNo">162</span> in.close();<a name="line.162"></a>
<span class="sourceLineNo">163</span> assertFalse("Cells appear to be plaintext", Bytes.contains(fileData, value));<a name="line.163"></a>
<span class="sourceLineNo">164</span><a name="line.164"></a>
<span class="sourceLineNo">165</span> // Confirm the WAL cannot be read back by ProtobufLogReader<a name="line.165"></a>
<span class="sourceLineNo">166</span> try {<a name="line.166"></a>
<span class="sourceLineNo">167</span> wals.createReader(TEST_UTIL.getTestFileSystem(), walPath);<a name="line.167"></a>
<span class="sourceLineNo">168</span> assertFalse(true);<a name="line.168"></a>
<span class="sourceLineNo">169</span> } catch (IOException ioe) {<a name="line.169"></a>
<span class="sourceLineNo">170</span> System.out.println("Expected ioe " + ioe.getMessage());<a name="line.170"></a>
<span class="sourceLineNo">171</span> }<a name="line.171"></a>
<span class="sourceLineNo">172</span><a name="line.172"></a>
<span class="sourceLineNo">173</span> FileStatus[] listStatus = fs.listStatus(walPath.getParent());<a name="line.173"></a>
<span class="sourceLineNo">174</span> Path rootdir = CommonFSUtils.getRootDir(conf);<a name="line.174"></a>
<span class="sourceLineNo">175</span> WALSplitter s = new WALSplitter(wals, conf, rootdir, fs, rootdir, fs, null, null, null);<a name="line.175"></a>
<span class="sourceLineNo">176</span> WALSplitter.SplitWALResult swr = s.splitWAL(listStatus[0], null);<a name="line.176"></a>
<span class="sourceLineNo">177</span> assertTrue(swr.isCorrupt());<a name="line.177"></a>
<span class="sourceLineNo">178</span> wals.close();<a name="line.178"></a>
<span class="sourceLineNo">179</span> }<a name="line.179"></a>
<span class="sourceLineNo">180</span><a name="line.180"></a>
<span class="sourceLineNo">181</span> @Test()<a name="line.181"></a>
<span class="sourceLineNo">182</span> public void testSecureWALReaderOnWAL() throws Exception {<a name="line.182"></a>
<span class="sourceLineNo">183</span> Configuration conf = TEST_UTIL.getConfiguration();<a name="line.183"></a>
<span class="sourceLineNo">184</span> conf.setClass("hbase.regionserver.hlog.reader.impl", SecureProtobufLogReader.class,<a name="line.184"></a>
<span class="sourceLineNo">185</span> WAL.Reader.class);<a name="line.185"></a>
<span class="sourceLineNo">186</span> conf.setClass("hbase.regionserver.hlog.writer.impl", ProtobufLogWriter.class,<a name="line.186"></a>
<span class="sourceLineNo">187</span> WALProvider.Writer.class);<a name="line.187"></a>
<span class="sourceLineNo">188</span> conf.setBoolean(WAL_ENCRYPTION, false);<a name="line.188"></a>
<span class="sourceLineNo">189</span> FileSystem fs = TEST_UTIL.getTestFileSystem();<a name="line.189"></a>
<span class="sourceLineNo">190</span> final WALFactory wals = new WALFactory(conf, ServerName<a name="line.190"></a>
<span class="sourceLineNo">191</span> .valueOf(currentTest.getMethodName(), 16010, System.currentTimeMillis()).toString());<a name="line.191"></a>
<span class="sourceLineNo">192</span> Path walPath = writeWAL(wals, currentTest.getMethodName(), false);<a name="line.192"></a>
<span class="sourceLineNo">193</span><a name="line.193"></a>
<span class="sourceLineNo">194</span> // Ensure edits are plaintext<a name="line.194"></a>
<span class="sourceLineNo">195</span> long length = fs.getFileStatus(walPath).getLen();<a name="line.195"></a>
<span class="sourceLineNo">196</span> FSDataInputStream in = fs.open(walPath);<a name="line.196"></a>
<span class="sourceLineNo">197</span> byte[] fileData = new byte[(int)length];<a name="line.197"></a>
<span class="sourceLineNo">198</span> IOUtils.readFully(in, fileData);<a name="line.198"></a>
<span class="sourceLineNo">199</span> in.close();<a name="line.199"></a>
<span class="sourceLineNo">200</span> assertTrue("Cells should be plaintext", Bytes.contains(fileData, value));<a name="line.200"></a>
<span class="sourceLineNo">201</span><a name="line.201"></a>
<span class="sourceLineNo">202</span> // Confirm the WAL can be read back by SecureProtobufLogReader<a name="line.202"></a>
<span class="sourceLineNo">203</span> try {<a name="line.203"></a>
<span class="sourceLineNo">204</span> WAL.Reader reader = wals.createReader(TEST_UTIL.getTestFileSystem(), walPath);<a name="line.204"></a>
<span class="sourceLineNo">205</span> reader.close();<a name="line.205"></a>
<span class="sourceLineNo">206</span> } catch (IOException ioe) {<a name="line.206"></a>
<span class="sourceLineNo">207</span> assertFalse(true);<a name="line.207"></a>
<span class="sourceLineNo">208</span> }<a name="line.208"></a>
<span class="sourceLineNo">209</span><a name="line.209"></a>
<span class="sourceLineNo">210</span> FileStatus[] listStatus = fs.listStatus(walPath.getParent());<a name="line.210"></a>
<span class="sourceLineNo">211</span> Path rootdir = CommonFSUtils.getRootDir(conf);<a name="line.211"></a>
<span class="sourceLineNo">212</span> try {<a name="line.212"></a>
<span class="sourceLineNo">213</span> WALSplitter s = new WALSplitter(wals, conf, rootdir, fs, rootdir, fs, null, null, null);<a name="line.213"></a>
<span class="sourceLineNo">214</span> s.splitWAL(listStatus[0], null);<a name="line.214"></a>
<span class="sourceLineNo">215</span> Path file = new Path(ZKSplitLog.getSplitLogDir(rootdir, listStatus[0].getPath().getName()),<a name="line.215"></a>
<span class="sourceLineNo">216</span> "corrupt");<a name="line.216"></a>
<span class="sourceLineNo">217</span> assertTrue(!fs.exists(file));<a name="line.217"></a>
<span class="sourceLineNo">218</span> } catch (IOException ioe) {<a name="line.218"></a>
<span class="sourceLineNo">219</span> assertTrue("WAL should have been processed", false);<a name="line.219"></a>
<span class="sourceLineNo">220</span> }<a name="line.220"></a>
<span class="sourceLineNo">221</span> wals.close();<a name="line.221"></a>
<span class="sourceLineNo">222</span> }<a name="line.222"></a>
<span class="sourceLineNo">223</span>}<a name="line.223"></a>
</pre>
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