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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.snapshot;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.io.InterruptedIOException;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.util.ArrayList;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.util.List;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.util.concurrent.Callable;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.concurrent.ExecutionException;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.concurrent.Executor;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.concurrent.ExecutorCompletionService;<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.FSDataOutputStream;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.hadoop.fs.FileStatus;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.hadoop.fs.FileSystem;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.fs.Path;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.fs.PathFilter;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.regionserver.StoreFileInfo;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.util.CommonFSUtils;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.slf4j.Logger;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.slf4j.LoggerFactory;<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.hbase.thirdparty.com.google.protobuf.CodedInputStream;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.apache.hbase.thirdparty.com.google.protobuf.InvalidProtocolBufferException;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.apache.hbase.thirdparty.com.google.protobuf.UnsafeByteOperations;<a name="line.44"></a>
<span class="sourceLineNo">045</span><a name="line.45"></a>
<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotRegionManifest;<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span>/**<a name="line.50"></a>
<span class="sourceLineNo">051</span> * DO NOT USE DIRECTLY. USE {@link SnapshotManifest}. Snapshot v2 layout format - Single Manifest<a name="line.51"></a>
<span class="sourceLineNo">052</span> * file containing all the information of regions - In the online-snapshot case each region will<a name="line.52"></a>
<span class="sourceLineNo">053</span> * write a "region manifest" /snapshotName/manifest.regionName<a name="line.53"></a>
<span class="sourceLineNo">054</span> */<a name="line.54"></a>
<span class="sourceLineNo">055</span>@InterfaceAudience.Private<a name="line.55"></a>
<span class="sourceLineNo">056</span>public final class SnapshotManifestV2 {<a name="line.56"></a>
<span class="sourceLineNo">057</span> private static final Logger LOG = LoggerFactory.getLogger(SnapshotManifestV2.class);<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span> public static final int DESCRIPTOR_VERSION = 2;<a name="line.59"></a>
<span class="sourceLineNo">060</span><a name="line.60"></a>
<span class="sourceLineNo">061</span> public static final String SNAPSHOT_MANIFEST_PREFIX = "region-manifest.";<a name="line.61"></a>
<span class="sourceLineNo">062</span><a name="line.62"></a>
<span class="sourceLineNo">063</span> private SnapshotManifestV2() {<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> static class ManifestBuilder implements SnapshotManifest.RegionVisitor&lt;<a name="line.66"></a>
<span class="sourceLineNo">067</span> SnapshotRegionManifest.Builder, SnapshotRegionManifest.FamilyFiles.Builder&gt; {<a name="line.67"></a>
<span class="sourceLineNo">068</span> private final Configuration conf;<a name="line.68"></a>
<span class="sourceLineNo">069</span> private final Path snapshotDir;<a name="line.69"></a>
<span class="sourceLineNo">070</span> private final FileSystem rootFs;<a name="line.70"></a>
<span class="sourceLineNo">071</span><a name="line.71"></a>
<span class="sourceLineNo">072</span> public ManifestBuilder(final Configuration conf, final FileSystem rootFs,<a name="line.72"></a>
<span class="sourceLineNo">073</span> final Path snapshotDir) {<a name="line.73"></a>
<span class="sourceLineNo">074</span> this.snapshotDir = snapshotDir;<a name="line.74"></a>
<span class="sourceLineNo">075</span> this.conf = conf;<a name="line.75"></a>
<span class="sourceLineNo">076</span> this.rootFs = rootFs;<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 SnapshotRegionManifest.Builder regionOpen(final RegionInfo regionInfo) {<a name="line.80"></a>
<span class="sourceLineNo">081</span> SnapshotRegionManifest.Builder manifest = SnapshotRegionManifest.newBuilder();<a name="line.81"></a>
<span class="sourceLineNo">082</span> manifest.setRegionInfo(ProtobufUtil.toRegionInfo(regionInfo));<a name="line.82"></a>
<span class="sourceLineNo">083</span> return manifest;<a name="line.83"></a>
<span class="sourceLineNo">084</span> }<a name="line.84"></a>
<span class="sourceLineNo">085</span><a name="line.85"></a>
<span class="sourceLineNo">086</span> @Override<a name="line.86"></a>
<span class="sourceLineNo">087</span> public void regionClose(final SnapshotRegionManifest.Builder region) throws IOException {<a name="line.87"></a>
<span class="sourceLineNo">088</span> // we should ensure the snapshot dir exist, maybe it has been deleted by master<a name="line.88"></a>
<span class="sourceLineNo">089</span> // see HBASE-16464<a name="line.89"></a>
<span class="sourceLineNo">090</span> FileSystem workingDirFs = snapshotDir.getFileSystem(this.conf);<a name="line.90"></a>
<span class="sourceLineNo">091</span> if (workingDirFs.exists(snapshotDir)) {<a name="line.91"></a>
<span class="sourceLineNo">092</span> SnapshotRegionManifest manifest = region.build();<a name="line.92"></a>
<span class="sourceLineNo">093</span> try (FSDataOutputStream stream =<a name="line.93"></a>
<span class="sourceLineNo">094</span> workingDirFs.create(getRegionManifestPath(snapshotDir, manifest))) {<a name="line.94"></a>
<span class="sourceLineNo">095</span> manifest.writeTo(stream);<a name="line.95"></a>
<span class="sourceLineNo">096</span> }<a name="line.96"></a>
<span class="sourceLineNo">097</span> } else {<a name="line.97"></a>
<span class="sourceLineNo">098</span> LOG.warn("can't write manifest without parent dir, maybe it has been deleted by master?");<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><a name="line.101"></a>
<span class="sourceLineNo">102</span> @Override<a name="line.102"></a>
<span class="sourceLineNo">103</span> public SnapshotRegionManifest.FamilyFiles.Builder<a name="line.103"></a>
<span class="sourceLineNo">104</span> familyOpen(final SnapshotRegionManifest.Builder region, final byte[] familyName) {<a name="line.104"></a>
<span class="sourceLineNo">105</span> SnapshotRegionManifest.FamilyFiles.Builder family =<a name="line.105"></a>
<span class="sourceLineNo">106</span> SnapshotRegionManifest.FamilyFiles.newBuilder();<a name="line.106"></a>
<span class="sourceLineNo">107</span> family.setFamilyName(UnsafeByteOperations.unsafeWrap(familyName));<a name="line.107"></a>
<span class="sourceLineNo">108</span> return family;<a name="line.108"></a>
<span class="sourceLineNo">109</span> }<a name="line.109"></a>
<span class="sourceLineNo">110</span><a name="line.110"></a>
<span class="sourceLineNo">111</span> @Override<a name="line.111"></a>
<span class="sourceLineNo">112</span> public void familyClose(final SnapshotRegionManifest.Builder region,<a name="line.112"></a>
<span class="sourceLineNo">113</span> final SnapshotRegionManifest.FamilyFiles.Builder family) {<a name="line.113"></a>
<span class="sourceLineNo">114</span> region.addFamilyFiles(family.build());<a name="line.114"></a>
<span class="sourceLineNo">115</span> }<a name="line.115"></a>
<span class="sourceLineNo">116</span><a name="line.116"></a>
<span class="sourceLineNo">117</span> @Override<a name="line.117"></a>
<span class="sourceLineNo">118</span> public void storeFile(final SnapshotRegionManifest.Builder region,<a name="line.118"></a>
<span class="sourceLineNo">119</span> final SnapshotRegionManifest.FamilyFiles.Builder family, final StoreFileInfo storeFile)<a name="line.119"></a>
<span class="sourceLineNo">120</span> throws IOException {<a name="line.120"></a>
<span class="sourceLineNo">121</span> SnapshotRegionManifest.StoreFile.Builder sfManifest =<a name="line.121"></a>
<span class="sourceLineNo">122</span> SnapshotRegionManifest.StoreFile.newBuilder();<a name="line.122"></a>
<span class="sourceLineNo">123</span> sfManifest.setName(storeFile.getPath().getName());<a name="line.123"></a>
<span class="sourceLineNo">124</span> if (storeFile.isReference()) {<a name="line.124"></a>
<span class="sourceLineNo">125</span> sfManifest.setReference(storeFile.getReference().convert());<a name="line.125"></a>
<span class="sourceLineNo">126</span> }<a name="line.126"></a>
<span class="sourceLineNo">127</span> if (!storeFile.isReference() &amp;&amp; !storeFile.isLink()) {<a name="line.127"></a>
<span class="sourceLineNo">128</span> sfManifest.setFileSize(storeFile.getSize());<a name="line.128"></a>
<span class="sourceLineNo">129</span> } else {<a name="line.129"></a>
<span class="sourceLineNo">130</span> sfManifest.setFileSize(storeFile.getReferencedFileStatus(rootFs).getLen());<a name="line.130"></a>
<span class="sourceLineNo">131</span> }<a name="line.131"></a>
<span class="sourceLineNo">132</span> family.addStoreFiles(sfManifest.build());<a name="line.132"></a>
<span class="sourceLineNo">133</span> }<a name="line.133"></a>
<span class="sourceLineNo">134</span> }<a name="line.134"></a>
<span class="sourceLineNo">135</span><a name="line.135"></a>
<span class="sourceLineNo">136</span> static List&lt;SnapshotRegionManifest&gt; loadRegionManifests(final Configuration conf,<a name="line.136"></a>
<span class="sourceLineNo">137</span> final Executor executor, final FileSystem fs, final Path snapshotDir,<a name="line.137"></a>
<span class="sourceLineNo">138</span> final SnapshotDescription desc, final int manifestSizeLimit) throws IOException {<a name="line.138"></a>
<span class="sourceLineNo">139</span> FileStatus[] manifestFiles = CommonFSUtils.listStatus(fs, snapshotDir, new PathFilter() {<a name="line.139"></a>
<span class="sourceLineNo">140</span> @Override<a name="line.140"></a>
<span class="sourceLineNo">141</span> public boolean accept(Path path) {<a name="line.141"></a>
<span class="sourceLineNo">142</span> return path.getName().startsWith(SNAPSHOT_MANIFEST_PREFIX);<a name="line.142"></a>
<span class="sourceLineNo">143</span> }<a name="line.143"></a>
<span class="sourceLineNo">144</span> });<a name="line.144"></a>
<span class="sourceLineNo">145</span><a name="line.145"></a>
<span class="sourceLineNo">146</span> if (manifestFiles == null || manifestFiles.length == 0) return null;<a name="line.146"></a>
<span class="sourceLineNo">147</span><a name="line.147"></a>
<span class="sourceLineNo">148</span> final ExecutorCompletionService&lt;SnapshotRegionManifest&gt; completionService =<a name="line.148"></a>
<span class="sourceLineNo">149</span> new ExecutorCompletionService&lt;&gt;(executor);<a name="line.149"></a>
<span class="sourceLineNo">150</span> for (final FileStatus st : manifestFiles) {<a name="line.150"></a>
<span class="sourceLineNo">151</span> completionService.submit(new Callable&lt;SnapshotRegionManifest&gt;() {<a name="line.151"></a>
<span class="sourceLineNo">152</span> @Override<a name="line.152"></a>
<span class="sourceLineNo">153</span> public SnapshotRegionManifest call() throws IOException {<a name="line.153"></a>
<span class="sourceLineNo">154</span> try (FSDataInputStream stream = fs.open(st.getPath())) {<a name="line.154"></a>
<span class="sourceLineNo">155</span> CodedInputStream cin = CodedInputStream.newInstance(stream);<a name="line.155"></a>
<span class="sourceLineNo">156</span> cin.setSizeLimit(manifestSizeLimit);<a name="line.156"></a>
<span class="sourceLineNo">157</span> return SnapshotRegionManifest.parseFrom(cin);<a name="line.157"></a>
<span class="sourceLineNo">158</span> }<a name="line.158"></a>
<span class="sourceLineNo">159</span> }<a name="line.159"></a>
<span class="sourceLineNo">160</span> });<a name="line.160"></a>
<span class="sourceLineNo">161</span> }<a name="line.161"></a>
<span class="sourceLineNo">162</span><a name="line.162"></a>
<span class="sourceLineNo">163</span> ArrayList&lt;SnapshotRegionManifest&gt; regionsManifest = new ArrayList&lt;&gt;(manifestFiles.length);<a name="line.163"></a>
<span class="sourceLineNo">164</span> try {<a name="line.164"></a>
<span class="sourceLineNo">165</span> for (int i = 0; i &lt; manifestFiles.length; ++i) {<a name="line.165"></a>
<span class="sourceLineNo">166</span> regionsManifest.add(completionService.take().get());<a name="line.166"></a>
<span class="sourceLineNo">167</span> }<a name="line.167"></a>
<span class="sourceLineNo">168</span> } catch (InterruptedException e) {<a name="line.168"></a>
<span class="sourceLineNo">169</span> throw new InterruptedIOException(e.getMessage());<a name="line.169"></a>
<span class="sourceLineNo">170</span> } catch (ExecutionException e) {<a name="line.170"></a>
<span class="sourceLineNo">171</span> Throwable t = e.getCause();<a name="line.171"></a>
<span class="sourceLineNo">172</span><a name="line.172"></a>
<span class="sourceLineNo">173</span> if (t instanceof InvalidProtocolBufferException) {<a name="line.173"></a>
<span class="sourceLineNo">174</span> throw (InvalidProtocolBufferException) t;<a name="line.174"></a>
<span class="sourceLineNo">175</span> } else {<a name="line.175"></a>
<span class="sourceLineNo">176</span> throw new IOException("ExecutionException", e.getCause());<a name="line.176"></a>
<span class="sourceLineNo">177</span> }<a name="line.177"></a>
<span class="sourceLineNo">178</span> }<a name="line.178"></a>
<span class="sourceLineNo">179</span> return regionsManifest;<a name="line.179"></a>
<span class="sourceLineNo">180</span> }<a name="line.180"></a>
<span class="sourceLineNo">181</span><a name="line.181"></a>
<span class="sourceLineNo">182</span> static void deleteRegionManifest(final FileSystem fs, final Path snapshotDir,<a name="line.182"></a>
<span class="sourceLineNo">183</span> final SnapshotRegionManifest manifest) throws IOException {<a name="line.183"></a>
<span class="sourceLineNo">184</span> fs.delete(getRegionManifestPath(snapshotDir, manifest), true);<a name="line.184"></a>
<span class="sourceLineNo">185</span> }<a name="line.185"></a>
<span class="sourceLineNo">186</span><a name="line.186"></a>
<span class="sourceLineNo">187</span> private static Path getRegionManifestPath(final Path snapshotDir,<a name="line.187"></a>
<span class="sourceLineNo">188</span> final SnapshotRegionManifest manifest) {<a name="line.188"></a>
<span class="sourceLineNo">189</span> String regionName = SnapshotManifest.getRegionNameFromManifest(manifest);<a name="line.189"></a>
<span class="sourceLineNo">190</span> return new Path(snapshotDir, SNAPSHOT_MANIFEST_PREFIX + regionName);<a name="line.190"></a>
<span class="sourceLineNo">191</span> }<a name="line.191"></a>
<span class="sourceLineNo">192</span>}<a name="line.192"></a>
</pre>
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