| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html lang="en"> |
| <head> |
| <title>Source code</title> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body> |
| <div class="sourceContainer"> |
| <pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> *<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * or more contributor license agreements. See the NOTICE file<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * distributed with this work for additional information<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * regarding copyright ownership. The ASF licenses this file<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * to you under the Apache License, Version 2.0 (the<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * "License"); you may not use this file except in compliance<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * with the License. You may obtain a copy of the License at<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> *<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> *<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * Unless required by applicable law or agreed to in writing, software<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * See the License for the specific language governing permissions and<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * limitations under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> */<a name="line.18"></a> |
| <span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.wal;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span><a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import static org.apache.hadoop.hbase.wal.AbstractFSWALProvider.DEFAULT_PROVIDER_ID;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import static org.apache.hadoop.hbase.wal.AbstractFSWALProvider.META_WAL_PROVIDER_ID;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import static org.apache.hadoop.hbase.wal.AbstractFSWALProvider.WAL_FILE_NAME_DELIMITER;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span><a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.io.IOException;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.ArrayList;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.Collection;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.Collections;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.List;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span><a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.conf.Configuration;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.fs.FileSystem;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.fs.Path;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HConstants;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>// imports for things that haven't moved from regionserver.wal yet.<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.regionserver.wal.FSHLog;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.regionserver.wal.WALActionsListener;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.util.CommonFSUtils;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.wal.WAL.Entry;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.slf4j.Logger;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.slf4j.LoggerFactory;<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> * A WAL Provider that returns a single thread safe WAL that optionally can skip parts of our normal<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * interactions with HDFS.<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * <p><a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * This implementation picks a directory in HDFS based on the same mechanisms as the<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * {@link FSHLogProvider}. Users can configure how much interaction we have with HDFS with the<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * configuration property "hbase.wal.iotestprovider.operations". The value should be a comma<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * separated list of allowed operations:<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * <ul><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * <li><em>append</em> : edits will be written to the underlying filesystem</li><a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * <li><em>sync</em> : wal syncs will result in hflush calls</li><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * <li><em>fileroll</em> : roll requests will result in creating a new file on the underlying<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * filesystem.</li><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * </ul><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * Additionally, the special cases "all" and "none" are recognized. If ommited, the value defaults<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * to "all." Behavior is undefined if "all" or "none" are paired with additional values. Behavior is<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * also undefined if values not listed above are included.<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * <p><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * Only those operations listed will occur between the returned WAL and HDFS. All others will be<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * no-ops.<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * <p><a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * Note that in the case of allowing "append" operations but not allowing "fileroll", the returned<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * WAL will just keep writing to the same file. This won't avoid all costs associated with file<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * management over time, becaue the data set size may result in additional HDFS block allocations.<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> */<a name="line.71"></a> |
| <span class="sourceLineNo">072</span>@InterfaceAudience.Private<a name="line.72"></a> |
| <span class="sourceLineNo">073</span>public class IOTestProvider implements WALProvider {<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> private static final Logger LOG = LoggerFactory.getLogger(IOTestProvider.class);<a name="line.74"></a> |
| <span class="sourceLineNo">075</span><a name="line.75"></a> |
| <span class="sourceLineNo">076</span> private static final String ALLOWED_OPERATIONS = "hbase.wal.iotestprovider.operations";<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> private enum AllowedOperations {<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> all,<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> append,<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> sync,<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> fileroll,<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> none<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> }<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> private WALFactory factory;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> private Configuration conf;<a name="line.87"></a> |
| <span class="sourceLineNo">088</span><a name="line.88"></a> |
| <span class="sourceLineNo">089</span> private volatile FSHLog log;<a name="line.89"></a> |
| <span class="sourceLineNo">090</span><a name="line.90"></a> |
| <span class="sourceLineNo">091</span> private String providerId;<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> protected AtomicBoolean initialized = new AtomicBoolean(false);<a name="line.92"></a> |
| <span class="sourceLineNo">093</span><a name="line.93"></a> |
| <span class="sourceLineNo">094</span> private List<WALActionsListener> listeners = new ArrayList<>();<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> /**<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> * @param factory factory that made us, identity used for FS layout. may not be null<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> * @param conf may not be null<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> * @param providerId differentiate between providers from one facotry, used for FS layout. may be<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> * null<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> public void init(WALFactory factory, Configuration conf, String providerId) throws IOException {<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> if (!initialized.compareAndSet(false, true)) {<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> throw new IllegalStateException("WALProvider.init should only be called once.");<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> }<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> this.factory = factory;<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> this.conf = conf;<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> this.providerId = providerId != null ? providerId : DEFAULT_PROVIDER_ID;<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 List<WAL> getWALs() {<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> return Collections.singletonList(log);<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> }<a name="line.114"></a> |
| <span class="sourceLineNo">115</span><a name="line.115"></a> |
| <span class="sourceLineNo">116</span> private FSHLog createWAL() throws IOException {<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> String logPrefix = factory.factoryId + WAL_FILE_NAME_DELIMITER + providerId;<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> return new IOTestWAL(CommonFSUtils.getWALFileSystem(conf), CommonFSUtils.getWALRootDir(conf),<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> AbstractFSWALProvider.getWALDirectoryName(factory.factoryId),<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> HConstants.HREGION_OLDLOGDIR_NAME, conf, listeners, true, logPrefix,<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> META_WAL_PROVIDER_ID.equals(providerId) ? META_WAL_PROVIDER_ID : null);<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> }<a name="line.122"></a> |
| <span class="sourceLineNo">123</span><a name="line.123"></a> |
| <span class="sourceLineNo">124</span> @Override<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> public WAL getWAL(RegionInfo region) throws IOException {<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> FSHLog log = this.log;<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> if (log != null) {<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> return log;<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> synchronized (this) {<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> log = this.log;<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> if (log == null) {<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> log = createWAL();<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> this.log = log;<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> }<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> }<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> return log;<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> }<a name="line.138"></a> |
| <span class="sourceLineNo">139</span><a name="line.139"></a> |
| <span class="sourceLineNo">140</span> @Override<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> public void close() throws IOException {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> FSHLog log = this.log;<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> if (log != null) {<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> log.close();<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> }<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> }<a name="line.146"></a> |
| <span class="sourceLineNo">147</span><a name="line.147"></a> |
| <span class="sourceLineNo">148</span> @Override<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> public void shutdown() throws IOException {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> FSHLog log = this.log;<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> if (log != null) {<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> log.shutdown();<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> }<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> }<a name="line.154"></a> |
| <span class="sourceLineNo">155</span><a name="line.155"></a> |
| <span class="sourceLineNo">156</span> private static class IOTestWAL extends FSHLog {<a name="line.156"></a> |
| <span class="sourceLineNo">157</span><a name="line.157"></a> |
| <span class="sourceLineNo">158</span> private final boolean doFileRolls;<a name="line.158"></a> |
| <span class="sourceLineNo">159</span><a name="line.159"></a> |
| <span class="sourceLineNo">160</span> // Used to differntiate between roll calls before and after we finish construction.<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> private final boolean initialized;<a name="line.161"></a> |
| <span class="sourceLineNo">162</span><a name="line.162"></a> |
| <span class="sourceLineNo">163</span> /**<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> * Create an edit log at the given <code>dir</code> location.<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> *<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> * You should never have to load an existing log. If there is a log at<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> * startup, it should have already been processed and deleted by the time the<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> * WAL object is started up.<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> *<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> * @param fs filesystem handle<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> * @param rootDir path to where logs and oldlogs<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> * @param logDir dir where wals are stored<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> * @param archiveDir dir where wals are archived<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> * @param conf configuration to use<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> * @param listeners Listeners on WAL events. Listeners passed here will<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> * be registered before we do anything else; e.g. the<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> * Constructor {@link #rollWriter()}.<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> * @param failIfWALExists If true IOException will be thrown if files related to this wal<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> * already exist.<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> * @param prefix should always be hostname and port in distributed env and<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> * it will be URL encoded before being used.<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> * If prefix is null, "wal" will be used<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> * @param suffix will be url encoded. null is treated as empty. non-empty must start with<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> * {@link AbstractFSWALProvider#WAL_FILE_NAME_DELIMITER}<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> * @throws IOException<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> */<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> public IOTestWAL(final FileSystem fs, final Path rootDir, final String logDir,<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> final String archiveDir, final Configuration conf,<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> final List<WALActionsListener> listeners,<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> final boolean failIfWALExists, final String prefix, final String suffix)<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> throws IOException {<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> super(fs, rootDir, logDir, archiveDir, conf, listeners, failIfWALExists, prefix, suffix);<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> Collection<String> operations = conf.getStringCollection(ALLOWED_OPERATIONS);<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> doFileRolls = operations.isEmpty() || operations.contains(AllowedOperations.all.name()) ||<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> operations.contains(AllowedOperations.fileroll.name());<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> initialized = true;<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> LOG.info("Initialized with file rolling " + (doFileRolls ? "enabled" : "disabled"));<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> }<a name="line.198"></a> |
| <span class="sourceLineNo">199</span><a name="line.199"></a> |
| <span class="sourceLineNo">200</span> private Writer noRollsWriter;<a name="line.200"></a> |
| <span class="sourceLineNo">201</span><a name="line.201"></a> |
| <span class="sourceLineNo">202</span> // creatWriterInstance is where the new pipeline is set up for doing file rolls<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> // if we are skipping it, just keep returning the same writer.<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> @Override<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> protected Writer createWriterInstance(final Path path) throws IOException {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> // we get called from the FSHLog constructor (!); always roll in this case since<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> // we don't know yet if we're supposed to generally roll and<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> // we need an initial file in the case of doing appends but no rolls.<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> if (!initialized || doFileRolls) {<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> LOG.info("creating new writer instance.");<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> final ProtobufLogWriter writer = new IOTestWriter();<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> try {<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> writer.init(fs, path, conf, false, this.blocksize);<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> } catch (CommonFSUtils.StreamLacksCapabilityException exception) {<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> throw new IOException("Can't create writer instance because underlying FileSystem " +<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> "doesn't support needed stream capabilities.", exception);<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> }<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> if (!initialized) {<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> LOG.info("storing initial writer instance in case file rolling isn't allowed.");<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> noRollsWriter = writer;<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> }<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> return writer;<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> } else {<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> LOG.info("WAL rolling disabled, returning the first writer.");<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> // Initial assignment happens during the constructor call, so there ought not be<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> // a race for first assignment.<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> return noRollsWriter;<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> }<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> }<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> }<a name="line.230"></a> |
| <span class="sourceLineNo">231</span><a name="line.231"></a> |
| <span class="sourceLineNo">232</span> /**<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> * Presumes init will be called by a single thread prior to any access of other methods.<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> */<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> private static class IOTestWriter extends ProtobufLogWriter {<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> private boolean doAppends;<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> private boolean doSyncs;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span><a name="line.238"></a> |
| <span class="sourceLineNo">239</span> @Override<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> public void init(FileSystem fs, Path path, Configuration conf, boolean overwritable,<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> long blocksize) throws IOException, CommonFSUtils.StreamLacksCapabilityException {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> Collection<String> operations = conf.getStringCollection(ALLOWED_OPERATIONS);<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> if (operations.isEmpty() || operations.contains(AllowedOperations.all.name())) {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> doAppends = doSyncs = true;<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> } else if (operations.contains(AllowedOperations.none.name())) {<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> doAppends = doSyncs = false;<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> } else {<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> doAppends = operations.contains(AllowedOperations.append.name());<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> doSyncs = operations.contains(AllowedOperations.sync.name());<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> }<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> LOG.info("IOTestWriter initialized with appends " + (doAppends ? "enabled" : "disabled") +<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> " and syncs " + (doSyncs ? "enabled" : "disabled"));<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> super.init(fs, path, conf, overwritable, blocksize);<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> }<a name="line.254"></a> |
| <span class="sourceLineNo">255</span><a name="line.255"></a> |
| <span class="sourceLineNo">256</span> @Override<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> protected String getWriterClassName() {<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> return ProtobufLogWriter.class.getSimpleName();<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> }<a name="line.259"></a> |
| <span class="sourceLineNo">260</span><a name="line.260"></a> |
| <span class="sourceLineNo">261</span> @Override<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> public void append(Entry entry) throws IOException {<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> if (doAppends) {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> super.append(entry);<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> }<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> }<a name="line.266"></a> |
| <span class="sourceLineNo">267</span><a name="line.267"></a> |
| <span class="sourceLineNo">268</span> @Override<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> public void sync(boolean forceSync) throws IOException {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> if (doSyncs) {<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> super.sync(forceSync);<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> }<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> }<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> }<a name="line.274"></a> |
| <span class="sourceLineNo">275</span><a name="line.275"></a> |
| <span class="sourceLineNo">276</span> @Override<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> public long getNumLogFiles() {<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> return this.log.getNumLogFiles();<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> }<a name="line.279"></a> |
| <span class="sourceLineNo">280</span><a name="line.280"></a> |
| <span class="sourceLineNo">281</span> @Override<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> public long getLogFileSize() {<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> return this.log.getLogFileSize();<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> }<a name="line.284"></a> |
| <span class="sourceLineNo">285</span><a name="line.285"></a> |
| <span class="sourceLineNo">286</span> @Override<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> public void addWALActionsListener(WALActionsListener listener) {<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> // TODO Implement WALProvider.addWALActionLister<a name="line.288"></a> |
| <span class="sourceLineNo">289</span><a name="line.289"></a> |
| <span class="sourceLineNo">290</span> }<a name="line.290"></a> |
| <span class="sourceLineNo">291</span>}<a name="line.291"></a> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </body> |
| </html> |
