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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.io.encoding;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.DataInputStream;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.DataOutputStream;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.IOException;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.nio.ByteBuffer;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.Cell;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.util.ByteBufferUtils;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span><a name="line.29"></a> |
| <span class="sourceLineNo">030</span>/**<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> * Just copy data, do not do any kind of compression. Use for comparison and benchmarking.<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> */<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>@InterfaceAudience.Private<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>public class CopyKeyDataBlockEncoder extends BufferedDataBlockEncoder {<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span> private static class CopyKeyEncodingState extends EncodingState {<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> NoneEncoder encoder = null;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> }<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> @Override<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> public void startBlockEncoding(HFileBlockEncodingContext blkEncodingCtx, DataOutputStream out)<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> throws IOException {<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> if (blkEncodingCtx.getClass() != HFileBlockDefaultEncodingContext.class) {<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> throw new IOException(this.getClass().getName() + " only accepts "<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> + HFileBlockDefaultEncodingContext.class.getName() + " as the " + "encoding context.");<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> }<a name="line.46"></a> |
| <span class="sourceLineNo">047</span><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> HFileBlockDefaultEncodingContext encodingCtx =<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> (HFileBlockDefaultEncodingContext) blkEncodingCtx;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> encodingCtx.prepareEncoding(out);<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> NoneEncoder encoder = new NoneEncoder(out, encodingCtx);<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> CopyKeyEncodingState state = new CopyKeyEncodingState();<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> state.encoder = encoder;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> blkEncodingCtx.setEncodingState(state);<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> }<a name="line.56"></a> |
| <span class="sourceLineNo">057</span><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> @Override<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> public int internalEncode(Cell cell, HFileBlockDefaultEncodingContext encodingContext,<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> DataOutputStream out) throws IOException {<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> CopyKeyEncodingState state = (CopyKeyEncodingState) encodingContext.getEncodingState();<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> NoneEncoder encoder = state.encoder;<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> return encoder.write(cell);<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> }<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> @Override<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> public Cell getFirstKeyCellInBlock(ByteBuff block) {<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> int keyLength = block.getIntAfterPosition(Bytes.SIZEOF_INT);<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> int pos = 3 * Bytes.SIZEOF_INT;<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> ByteBuffer key = block.asSubByteBuffer(pos + keyLength).duplicate();<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> return createFirstKeyCell(key, keyLength);<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> }<a name="line.72"></a> |
| <span class="sourceLineNo">073</span><a name="line.73"></a> |
| <span class="sourceLineNo">074</span> @Override<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> public String toString() {<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> return CopyKeyDataBlockEncoder.class.getSimpleName();<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> @Override<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> public EncodedSeeker createSeeker(final HFileBlockDecodingContext decodingCtx) {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> return new SeekerStateBufferedEncodedSeeker(decodingCtx);<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> }<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> @Override<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> protected ByteBuffer internalDecodeKeyValues(DataInputStream source, int allocateHeaderLength,<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> int skipLastBytes, HFileBlockDefaultDecodingContext decodingCtx) throws IOException {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> int decompressedSize = source.readInt();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> ByteBuffer buffer = ByteBuffer.allocate(decompressedSize + allocateHeaderLength);<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> buffer.position(allocateHeaderLength);<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> ByteBufferUtils.copyFromStreamToBuffer(buffer, source, decompressedSize);<a name="line.90"></a> |
| <span class="sourceLineNo">091</span><a name="line.91"></a> |
| <span class="sourceLineNo">092</span> return buffer;<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> private static class SeekerStateBufferedEncodedSeeker extends BufferedEncodedSeeker<SeekerState> {<a name="line.95"></a> |
| <span class="sourceLineNo">096</span><a name="line.96"></a> |
| <span class="sourceLineNo">097</span> private SeekerStateBufferedEncodedSeeker(HFileBlockDecodingContext decodingCtx) {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> super(decodingCtx);<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> }<a name="line.99"></a> |
| <span class="sourceLineNo">100</span><a name="line.100"></a> |
| <span class="sourceLineNo">101</span> @Override<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> protected void decodeNext() {<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> current.keyLength = currentBuffer.getInt();<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> current.valueLength = currentBuffer.getInt();<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> current.ensureSpaceForKey();<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> currentBuffer.get(current.keyBuffer, 0, current.keyLength);<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> current.valueOffset = currentBuffer.position();<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> currentBuffer.skip(current.valueLength);<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> if (includesTags()) {<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> // Read short as unsigned, high byte first<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> current.tagsLength = ((currentBuffer.get() & 0xff) << 8) ^ (currentBuffer.get() & 0xff);<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> currentBuffer.skip(current.tagsLength);<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> }<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> if (includesMvcc()) {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> current.memstoreTS = ByteBufferUtils.readVLong(currentBuffer);<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> } else {<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> current.memstoreTS = 0;<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> }<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> current.nextKvOffset = currentBuffer.position();<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> }<a name="line.120"></a> |
| <span class="sourceLineNo">121</span><a name="line.121"></a> |
| <span class="sourceLineNo">122</span> @Override<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> protected void decodeFirst() {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> currentBuffer.skip(Bytes.SIZEOF_INT);<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> current.lastCommonPrefix = 0;<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> decodeNext();<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> }<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> }<a name="line.128"></a> |
| <span class="sourceLineNo">129</span><a name="line.129"></a> |
| <span class="sourceLineNo">130</span>}<a name="line.130"></a> |
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