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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.io.encoding;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.DataInputStream;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.io.DataOutputStream;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.io.IOException;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.nio.ByteBuffer;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.ExtendedCell;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.nio.ByteBuff;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.util.ByteBufferUtils;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">029</span><span id="line-29"></span> |
| <span class="source-line-no">030</span><span id="line-30">/**</span> |
| <span class="source-line-no">031</span><span id="line-31"> * Just copy data, do not do any kind of compression. Use for comparison and benchmarking.</span> |
| <span class="source-line-no">032</span><span id="line-32"> */</span> |
| <span class="source-line-no">033</span><span id="line-33">@InterfaceAudience.Private</span> |
| <span class="source-line-no">034</span><span id="line-34">public class CopyKeyDataBlockEncoder extends BufferedDataBlockEncoder {</span> |
| <span class="source-line-no">035</span><span id="line-35"></span> |
| <span class="source-line-no">036</span><span id="line-36"> private static class CopyKeyEncodingState extends EncodingState {</span> |
| <span class="source-line-no">037</span><span id="line-37"> NoneEncoder encoder = null;</span> |
| <span class="source-line-no">038</span><span id="line-38"> }</span> |
| <span class="source-line-no">039</span><span id="line-39"></span> |
| <span class="source-line-no">040</span><span id="line-40"> @Override</span> |
| <span class="source-line-no">041</span><span id="line-41"> public void startBlockEncoding(HFileBlockEncodingContext blkEncodingCtx, DataOutputStream out)</span> |
| <span class="source-line-no">042</span><span id="line-42"> throws IOException {</span> |
| <span class="source-line-no">043</span><span id="line-43"> if (blkEncodingCtx.getClass() != HFileBlockDefaultEncodingContext.class) {</span> |
| <span class="source-line-no">044</span><span id="line-44"> throw new IOException(this.getClass().getName() + " only accepts "</span> |
| <span class="source-line-no">045</span><span id="line-45"> + HFileBlockDefaultEncodingContext.class.getName() + " as the " + "encoding context.");</span> |
| <span class="source-line-no">046</span><span id="line-46"> }</span> |
| <span class="source-line-no">047</span><span id="line-47"></span> |
| <span class="source-line-no">048</span><span id="line-48"> HFileBlockDefaultEncodingContext encodingCtx =</span> |
| <span class="source-line-no">049</span><span id="line-49"> (HFileBlockDefaultEncodingContext) blkEncodingCtx;</span> |
| <span class="source-line-no">050</span><span id="line-50"> encodingCtx.prepareEncoding(out);</span> |
| <span class="source-line-no">051</span><span id="line-51"></span> |
| <span class="source-line-no">052</span><span id="line-52"> NoneEncoder encoder = new NoneEncoder(out, encodingCtx);</span> |
| <span class="source-line-no">053</span><span id="line-53"> CopyKeyEncodingState state = new CopyKeyEncodingState();</span> |
| <span class="source-line-no">054</span><span id="line-54"> state.encoder = encoder;</span> |
| <span class="source-line-no">055</span><span id="line-55"> blkEncodingCtx.setEncodingState(state);</span> |
| <span class="source-line-no">056</span><span id="line-56"> }</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> @Override</span> |
| <span class="source-line-no">059</span><span id="line-59"> public int internalEncode(ExtendedCell cell, HFileBlockDefaultEncodingContext encodingContext,</span> |
| <span class="source-line-no">060</span><span id="line-60"> DataOutputStream out) throws IOException {</span> |
| <span class="source-line-no">061</span><span id="line-61"> CopyKeyEncodingState state = (CopyKeyEncodingState) encodingContext.getEncodingState();</span> |
| <span class="source-line-no">062</span><span id="line-62"> NoneEncoder encoder = state.encoder;</span> |
| <span class="source-line-no">063</span><span id="line-63"> return encoder.write(cell);</span> |
| <span class="source-line-no">064</span><span id="line-64"> }</span> |
| <span class="source-line-no">065</span><span id="line-65"></span> |
| <span class="source-line-no">066</span><span id="line-66"> @Override</span> |
| <span class="source-line-no">067</span><span id="line-67"> public ExtendedCell getFirstKeyCellInBlock(ByteBuff block) {</span> |
| <span class="source-line-no">068</span><span id="line-68"> int keyLength = block.getIntAfterPosition(Bytes.SIZEOF_INT);</span> |
| <span class="source-line-no">069</span><span id="line-69"> int pos = 3 * Bytes.SIZEOF_INT;</span> |
| <span class="source-line-no">070</span><span id="line-70"> ByteBuffer key = block.asSubByteBuffer(pos + keyLength).duplicate();</span> |
| <span class="source-line-no">071</span><span id="line-71"> return createFirstKeyCell(key, keyLength);</span> |
| <span class="source-line-no">072</span><span id="line-72"> }</span> |
| <span class="source-line-no">073</span><span id="line-73"></span> |
| <span class="source-line-no">074</span><span id="line-74"> @Override</span> |
| <span class="source-line-no">075</span><span id="line-75"> public String toString() {</span> |
| <span class="source-line-no">076</span><span id="line-76"> return CopyKeyDataBlockEncoder.class.getSimpleName();</span> |
| <span class="source-line-no">077</span><span id="line-77"> }</span> |
| <span class="source-line-no">078</span><span id="line-78"></span> |
| <span class="source-line-no">079</span><span id="line-79"> @Override</span> |
| <span class="source-line-no">080</span><span id="line-80"> public EncodedSeeker createSeeker(final HFileBlockDecodingContext decodingCtx) {</span> |
| <span class="source-line-no">081</span><span id="line-81"> return new SeekerStateBufferedEncodedSeeker(decodingCtx);</span> |
| <span class="source-line-no">082</span><span id="line-82"> }</span> |
| <span class="source-line-no">083</span><span id="line-83"></span> |
| <span class="source-line-no">084</span><span id="line-84"> @Override</span> |
| <span class="source-line-no">085</span><span id="line-85"> protected ByteBuffer internalDecodeKeyValues(DataInputStream source, int allocateHeaderLength,</span> |
| <span class="source-line-no">086</span><span id="line-86"> int skipLastBytes, HFileBlockDefaultDecodingContext decodingCtx) throws IOException {</span> |
| <span class="source-line-no">087</span><span id="line-87"> int decompressedSize = source.readInt();</span> |
| <span class="source-line-no">088</span><span id="line-88"> ByteBuffer buffer = ByteBuffer.allocate(decompressedSize + allocateHeaderLength);</span> |
| <span class="source-line-no">089</span><span id="line-89"> buffer.position(allocateHeaderLength);</span> |
| <span class="source-line-no">090</span><span id="line-90"> ByteBufferUtils.copyFromStreamToBuffer(buffer, source, decompressedSize);</span> |
| <span class="source-line-no">091</span><span id="line-91"></span> |
| <span class="source-line-no">092</span><span id="line-92"> return buffer;</span> |
| <span class="source-line-no">093</span><span id="line-93"> }</span> |
| <span class="source-line-no">094</span><span id="line-94"></span> |
| <span class="source-line-no">095</span><span id="line-95"> private static class SeekerStateBufferedEncodedSeeker extends BufferedEncodedSeeker<SeekerState> {</span> |
| <span class="source-line-no">096</span><span id="line-96"></span> |
| <span class="source-line-no">097</span><span id="line-97"> private SeekerStateBufferedEncodedSeeker(HFileBlockDecodingContext decodingCtx) {</span> |
| <span class="source-line-no">098</span><span id="line-98"> super(decodingCtx);</span> |
| <span class="source-line-no">099</span><span id="line-99"> }</span> |
| <span class="source-line-no">100</span><span id="line-100"></span> |
| <span class="source-line-no">101</span><span id="line-101"> @Override</span> |
| <span class="source-line-no">102</span><span id="line-102"> protected void decodeNext() {</span> |
| <span class="source-line-no">103</span><span id="line-103"> current.keyLength = currentBuffer.getInt();</span> |
| <span class="source-line-no">104</span><span id="line-104"> current.valueLength = currentBuffer.getInt();</span> |
| <span class="source-line-no">105</span><span id="line-105"> current.ensureSpaceForKey();</span> |
| <span class="source-line-no">106</span><span id="line-106"> currentBuffer.get(current.keyBuffer, 0, current.keyLength);</span> |
| <span class="source-line-no">107</span><span id="line-107"> current.valueOffset = currentBuffer.position();</span> |
| <span class="source-line-no">108</span><span id="line-108"> currentBuffer.skip(current.valueLength);</span> |
| <span class="source-line-no">109</span><span id="line-109"> if (includesTags()) {</span> |
| <span class="source-line-no">110</span><span id="line-110"> // Read short as unsigned, high byte first</span> |
| <span class="source-line-no">111</span><span id="line-111"> current.tagsLength = ((currentBuffer.get() & 0xff) << 8) ^ (currentBuffer.get() & 0xff);</span> |
| <span class="source-line-no">112</span><span id="line-112"> currentBuffer.skip(current.tagsLength);</span> |
| <span class="source-line-no">113</span><span id="line-113"> }</span> |
| <span class="source-line-no">114</span><span id="line-114"> if (includesMvcc()) {</span> |
| <span class="source-line-no">115</span><span id="line-115"> current.memstoreTS = ByteBufferUtils.readVLong(currentBuffer);</span> |
| <span class="source-line-no">116</span><span id="line-116"> } else {</span> |
| <span class="source-line-no">117</span><span id="line-117"> current.memstoreTS = 0;</span> |
| <span class="source-line-no">118</span><span id="line-118"> }</span> |
| <span class="source-line-no">119</span><span id="line-119"> current.nextKvOffset = currentBuffer.position();</span> |
| <span class="source-line-no">120</span><span id="line-120"> }</span> |
| <span class="source-line-no">121</span><span id="line-121"></span> |
| <span class="source-line-no">122</span><span id="line-122"> @Override</span> |
| <span class="source-line-no">123</span><span id="line-123"> protected void decodeFirst() {</span> |
| <span class="source-line-no">124</span><span id="line-124"> currentBuffer.skip(Bytes.SIZEOF_INT);</span> |
| <span class="source-line-no">125</span><span id="line-125"> current.lastCommonPrefix = 0;</span> |
| <span class="source-line-no">126</span><span id="line-126"> decodeNext();</span> |
| <span class="source-line-no">127</span><span id="line-127"> }</span> |
| <span class="source-line-no">128</span><span id="line-128"> }</span> |
| <span class="source-line-no">129</span><span id="line-129"></span> |
| <span class="source-line-no">130</span><span id="line-130">}</span> |
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| </pre> |
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