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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 java.util.ArrayList;<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.Cell;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.KeyValue;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.KeyValueUtil;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.io.ByteArrayOutputStream;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.nio.SingleByteBuff;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.util.ByteBufferUtils;<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.io.WritableUtils;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span><a name="line.36"></a> |
| <span class="sourceLineNo">037</span>/**<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * Store cells following every row's start offset, so we can binary search to a row's cells. Format:<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * flat cells integer: number of rows integer: row0's offset integer: row1's offset .... integer:<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * dataSize<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> */<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>@InterfaceAudience.Private<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>public class RowIndexCodecV1 extends AbstractDataBlockEncoder {<a name="line.43"></a> |
| <span class="sourceLineNo">044</span><a name="line.44"></a> |
| <span class="sourceLineNo">045</span> private static class RowIndexEncodingState extends EncodingState {<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> RowIndexEncoderV1 encoder = null;<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 void beforeShipped() {<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> if (encoder != null) {<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> encoder.beforeShipped();<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><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> @Override<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> public void startBlockEncoding(HFileBlockEncodingContext blkEncodingCtx, DataOutputStream out)<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> throws IOException {<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> if (blkEncodingCtx.getClass() != HFileBlockDefaultEncodingContext.class) {<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> throw new IOException(this.getClass().getName() + " only accepts "<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> + HFileBlockDefaultEncodingContext.class.getName() + " as the " + "encoding context.");<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> HFileBlockDefaultEncodingContext encodingCtx =<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> (HFileBlockDefaultEncodingContext) blkEncodingCtx;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> encodingCtx.prepareEncoding(out);<a name="line.66"></a> |
| <span class="sourceLineNo">067</span><a name="line.67"></a> |
| <span class="sourceLineNo">068</span> RowIndexEncoderV1 encoder = new RowIndexEncoderV1(out, encodingCtx);<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> RowIndexEncodingState state = new RowIndexEncodingState();<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> state.encoder = encoder;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> blkEncodingCtx.setEncodingState(state);<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 void encode(Cell cell, HFileBlockEncodingContext encodingCtx, DataOutputStream out)<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> throws IOException {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> RowIndexEncodingState state = (RowIndexEncodingState) encodingCtx.getEncodingState();<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> RowIndexEncoderV1 encoder = state.encoder;<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> encoder.write(cell);<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> }<a name="line.80"></a> |
| <span class="sourceLineNo">081</span><a name="line.81"></a> |
| <span class="sourceLineNo">082</span> @Override<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> public void endBlockEncoding(HFileBlockEncodingContext encodingCtx, DataOutputStream out,<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> byte[] uncompressedBytesWithHeader) throws IOException {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> RowIndexEncodingState state = (RowIndexEncodingState) encodingCtx.getEncodingState();<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> RowIndexEncoderV1 encoder = state.encoder;<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> encoder.flush();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> postEncoding(encodingCtx);<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> @Override<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> public ByteBuffer decodeKeyValues(DataInputStream source, HFileBlockDecodingContext decodingCtx)<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> throws IOException {<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> ByteBuffer sourceAsBuffer = ByteBufferUtils.drainInputStreamToBuffer(source);// waste<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> sourceAsBuffer.mark();<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> if (!decodingCtx.getHFileContext().isIncludesTags()) {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> sourceAsBuffer.position(sourceAsBuffer.limit() - Bytes.SIZEOF_INT);<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> int onDiskSize = sourceAsBuffer.getInt();<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> sourceAsBuffer.reset();<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> ByteBuffer dup = sourceAsBuffer.duplicate();<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> dup.position(sourceAsBuffer.position());<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> dup.limit(sourceAsBuffer.position() + onDiskSize);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> return dup.slice();<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> } else {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> RowIndexSeekerV1 seeker = new RowIndexSeekerV1(decodingCtx);<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> seeker.setCurrentBuffer(new SingleByteBuff(sourceAsBuffer));<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> List<Cell> kvs = new ArrayList<>();<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> kvs.add(seeker.getCell());<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> while (seeker.next()) {<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> kvs.add(seeker.getCell());<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> boolean includesMvcc = decodingCtx.getHFileContext().isIncludesMvcc();<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> ByteArrayOutputStream baos = new ByteArrayOutputStream();<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> try (DataOutputStream out = new DataOutputStream(baos)) {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> for (Cell cell : kvs) {<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> KeyValue currentCell = KeyValueUtil.copyToNewKeyValue(cell);<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> out.write(currentCell.getBuffer(), currentCell.getOffset(), currentCell.getLength());<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> if (includesMvcc) {<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> WritableUtils.writeVLong(out, cell.getSequenceId());<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> out.flush();<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> }<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> return ByteBuffer.wrap(baos.getBuffer(), 0, baos.size());<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> }<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> }<a name="line.126"></a> |
| <span class="sourceLineNo">127</span><a name="line.127"></a> |
| <span class="sourceLineNo">128</span> @Override<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> public Cell getFirstKeyCellInBlock(ByteBuff block) {<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> block.mark();<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> int keyLength = block.getInt();<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> block.getInt();<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> ByteBuffer key = block.asSubByteBuffer(keyLength).duplicate();<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> block.reset();<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> return createFirstKeyCell(key, keyLength);<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> }<a name="line.136"></a> |
| <span class="sourceLineNo">137</span><a name="line.137"></a> |
| <span class="sourceLineNo">138</span> @Override<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> public EncodedSeeker createSeeker(HFileBlockDecodingContext decodingCtx) {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> return new RowIndexSeekerV1(decodingCtx);<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> |
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| </pre> |
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