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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 java.util.ArrayList;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.List;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.ExtendedCell;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.KeyValue;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.KeyValueUtil;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.io.ByteArrayOutputStream;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.nio.ByteBuff;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.nio.SingleByteBuff;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.util.ByteBufferUtils;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.io.WritableUtils;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">036</span><span id="line-36"></span> |
| <span class="source-line-no">037</span><span id="line-37">/**</span> |
| <span class="source-line-no">038</span><span id="line-38"> * Store cells following every row's start offset, so we can binary search to a row's cells. Format:</span> |
| <span class="source-line-no">039</span><span id="line-39"> * flat cells integer: number of rows integer: row0's offset integer: row1's offset .... integer:</span> |
| <span class="source-line-no">040</span><span id="line-40"> * dataSize</span> |
| <span class="source-line-no">041</span><span id="line-41"> */</span> |
| <span class="source-line-no">042</span><span id="line-42">@InterfaceAudience.Private</span> |
| <span class="source-line-no">043</span><span id="line-43">public class RowIndexCodecV1 extends AbstractDataBlockEncoder {</span> |
| <span class="source-line-no">044</span><span id="line-44"></span> |
| <span class="source-line-no">045</span><span id="line-45"> private static class RowIndexEncodingState extends EncodingState {</span> |
| <span class="source-line-no">046</span><span id="line-46"> RowIndexEncoderV1 encoder = null;</span> |
| <span class="source-line-no">047</span><span id="line-47"></span> |
| <span class="source-line-no">048</span><span id="line-48"> @Override</span> |
| <span class="source-line-no">049</span><span id="line-49"> public void beforeShipped() {</span> |
| <span class="source-line-no">050</span><span id="line-50"> if (encoder != null) {</span> |
| <span class="source-line-no">051</span><span id="line-51"> encoder.beforeShipped();</span> |
| <span class="source-line-no">052</span><span id="line-52"> }</span> |
| <span class="source-line-no">053</span><span id="line-53"> }</span> |
| <span class="source-line-no">054</span><span id="line-54"> }</span> |
| <span class="source-line-no">055</span><span id="line-55"></span> |
| <span class="source-line-no">056</span><span id="line-56"> @Override</span> |
| <span class="source-line-no">057</span><span id="line-57"> public void startBlockEncoding(HFileBlockEncodingContext blkEncodingCtx, DataOutputStream out)</span> |
| <span class="source-line-no">058</span><span id="line-58"> throws IOException {</span> |
| <span class="source-line-no">059</span><span id="line-59"> if (blkEncodingCtx.getClass() != HFileBlockDefaultEncodingContext.class) {</span> |
| <span class="source-line-no">060</span><span id="line-60"> throw new IOException(this.getClass().getName() + " only accepts "</span> |
| <span class="source-line-no">061</span><span id="line-61"> + HFileBlockDefaultEncodingContext.class.getName() + " as the " + "encoding context.");</span> |
| <span class="source-line-no">062</span><span id="line-62"> }</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> HFileBlockDefaultEncodingContext encodingCtx =</span> |
| <span class="source-line-no">065</span><span id="line-65"> (HFileBlockDefaultEncodingContext) blkEncodingCtx;</span> |
| <span class="source-line-no">066</span><span id="line-66"> encodingCtx.prepareEncoding(out);</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> RowIndexEncoderV1 encoder = new RowIndexEncoderV1(out, encodingCtx);</span> |
| <span class="source-line-no">069</span><span id="line-69"> RowIndexEncodingState state = new RowIndexEncodingState();</span> |
| <span class="source-line-no">070</span><span id="line-70"> state.encoder = encoder;</span> |
| <span class="source-line-no">071</span><span id="line-71"> blkEncodingCtx.setEncodingState(state);</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 void encode(ExtendedCell cell, HFileBlockEncodingContext encodingCtx, DataOutputStream out)</span> |
| <span class="source-line-no">076</span><span id="line-76"> throws IOException {</span> |
| <span class="source-line-no">077</span><span id="line-77"> RowIndexEncodingState state = (RowIndexEncodingState) encodingCtx.getEncodingState();</span> |
| <span class="source-line-no">078</span><span id="line-78"> RowIndexEncoderV1 encoder = state.encoder;</span> |
| <span class="source-line-no">079</span><span id="line-79"> encoder.write(cell);</span> |
| <span class="source-line-no">080</span><span id="line-80"> }</span> |
| <span class="source-line-no">081</span><span id="line-81"></span> |
| <span class="source-line-no">082</span><span id="line-82"> @Override</span> |
| <span class="source-line-no">083</span><span id="line-83"> public void endBlockEncoding(HFileBlockEncodingContext encodingCtx, DataOutputStream out,</span> |
| <span class="source-line-no">084</span><span id="line-84"> byte[] uncompressedBytesWithHeader) throws IOException {</span> |
| <span class="source-line-no">085</span><span id="line-85"> RowIndexEncodingState state = (RowIndexEncodingState) encodingCtx.getEncodingState();</span> |
| <span class="source-line-no">086</span><span id="line-86"> RowIndexEncoderV1 encoder = state.encoder;</span> |
| <span class="source-line-no">087</span><span id="line-87"> encoder.flush();</span> |
| <span class="source-line-no">088</span><span id="line-88"> postEncoding(encodingCtx);</span> |
| <span class="source-line-no">089</span><span id="line-89"> }</span> |
| <span class="source-line-no">090</span><span id="line-90"></span> |
| <span class="source-line-no">091</span><span id="line-91"> @Override</span> |
| <span class="source-line-no">092</span><span id="line-92"> public ByteBuffer decodeKeyValues(DataInputStream source, HFileBlockDecodingContext decodingCtx)</span> |
| <span class="source-line-no">093</span><span id="line-93"> throws IOException {</span> |
| <span class="source-line-no">094</span><span id="line-94"> ByteBuffer sourceAsBuffer = ByteBufferUtils.drainInputStreamToBuffer(source);// waste</span> |
| <span class="source-line-no">095</span><span id="line-95"> sourceAsBuffer.mark();</span> |
| <span class="source-line-no">096</span><span id="line-96"> if (!decodingCtx.getHFileContext().isIncludesTags()) {</span> |
| <span class="source-line-no">097</span><span id="line-97"> sourceAsBuffer.position(sourceAsBuffer.limit() - Bytes.SIZEOF_INT);</span> |
| <span class="source-line-no">098</span><span id="line-98"> int onDiskSize = sourceAsBuffer.getInt();</span> |
| <span class="source-line-no">099</span><span id="line-99"> sourceAsBuffer.reset();</span> |
| <span class="source-line-no">100</span><span id="line-100"> ByteBuffer dup = sourceAsBuffer.duplicate();</span> |
| <span class="source-line-no">101</span><span id="line-101"> dup.position(sourceAsBuffer.position());</span> |
| <span class="source-line-no">102</span><span id="line-102"> dup.limit(sourceAsBuffer.position() + onDiskSize);</span> |
| <span class="source-line-no">103</span><span id="line-103"> return dup.slice();</span> |
| <span class="source-line-no">104</span><span id="line-104"> } else {</span> |
| <span class="source-line-no">105</span><span id="line-105"> RowIndexSeekerV1 seeker = new RowIndexSeekerV1(decodingCtx);</span> |
| <span class="source-line-no">106</span><span id="line-106"> seeker.setCurrentBuffer(new SingleByteBuff(sourceAsBuffer));</span> |
| <span class="source-line-no">107</span><span id="line-107"> List<ExtendedCell> kvs = new ArrayList<>();</span> |
| <span class="source-line-no">108</span><span id="line-108"> kvs.add(seeker.getCell());</span> |
| <span class="source-line-no">109</span><span id="line-109"> while (seeker.next()) {</span> |
| <span class="source-line-no">110</span><span id="line-110"> kvs.add(seeker.getCell());</span> |
| <span class="source-line-no">111</span><span id="line-111"> }</span> |
| <span class="source-line-no">112</span><span id="line-112"> boolean includesMvcc = decodingCtx.getHFileContext().isIncludesMvcc();</span> |
| <span class="source-line-no">113</span><span id="line-113"> ByteArrayOutputStream baos = new ByteArrayOutputStream();</span> |
| <span class="source-line-no">114</span><span id="line-114"> try (DataOutputStream out = new DataOutputStream(baos)) {</span> |
| <span class="source-line-no">115</span><span id="line-115"> for (ExtendedCell cell : kvs) {</span> |
| <span class="source-line-no">116</span><span id="line-116"> KeyValue currentCell = KeyValueUtil.copyToNewKeyValue(cell);</span> |
| <span class="source-line-no">117</span><span id="line-117"> out.write(currentCell.getBuffer(), currentCell.getOffset(), currentCell.getLength());</span> |
| <span class="source-line-no">118</span><span id="line-118"> if (includesMvcc) {</span> |
| <span class="source-line-no">119</span><span id="line-119"> WritableUtils.writeVLong(out, cell.getSequenceId());</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"> out.flush();</span> |
| <span class="source-line-no">123</span><span id="line-123"> }</span> |
| <span class="source-line-no">124</span><span id="line-124"> return ByteBuffer.wrap(baos.getBuffer(), 0, baos.size());</span> |
| <span class="source-line-no">125</span><span id="line-125"> }</span> |
| <span class="source-line-no">126</span><span id="line-126"> }</span> |
| <span class="source-line-no">127</span><span id="line-127"></span> |
| <span class="source-line-no">128</span><span id="line-128"> @Override</span> |
| <span class="source-line-no">129</span><span id="line-129"> public ExtendedCell getFirstKeyCellInBlock(ByteBuff block) {</span> |
| <span class="source-line-no">130</span><span id="line-130"> block.mark();</span> |
| <span class="source-line-no">131</span><span id="line-131"> int keyLength = block.getInt();</span> |
| <span class="source-line-no">132</span><span id="line-132"> block.getInt();</span> |
| <span class="source-line-no">133</span><span id="line-133"> ByteBuffer key = block.asSubByteBuffer(keyLength).duplicate();</span> |
| <span class="source-line-no">134</span><span id="line-134"> block.reset();</span> |
| <span class="source-line-no">135</span><span id="line-135"> return createFirstKeyCell(key, keyLength);</span> |
| <span class="source-line-no">136</span><span id="line-136"> }</span> |
| <span class="source-line-no">137</span><span id="line-137"></span> |
| <span class="source-line-no">138</span><span id="line-138"> @Override</span> |
| <span class="source-line-no">139</span><span id="line-139"> public EncodedSeeker createSeeker(HFileBlockDecodingContext decodingCtx) {</span> |
| <span class="source-line-no">140</span><span id="line-140"> return new RowIndexSeekerV1(decodingCtx);</span> |
| <span class="source-line-no">141</span><span id="line-141"> }</span> |
| <span class="source-line-no">142</span><span id="line-142">}</span> |
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| </pre> |
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