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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;</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.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.fs.Path;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.util.CommonFSUtils;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">026</span><span id="line-26"></span> |
| <span class="source-line-no">027</span><span id="line-27">/**</span> |
| <span class="source-line-no">028</span><span id="line-28"> * WALLink describes a link to a WAL. An wal can be in /hbase/.logs/&lt;server&gt;/&lt;wal&gt; or it</span> |
| <span class="source-line-no">029</span><span id="line-29"> * can be in /hbase/.oldlogs/&lt;wal&gt; The link checks first in the original path, if it is not</span> |
| <span class="source-line-no">030</span><span id="line-30"> * present it fallbacks to the archived path.</span> |
| <span class="source-line-no">031</span><span id="line-31"> */</span> |
| <span class="source-line-no">032</span><span id="line-32">@InterfaceAudience.Private</span> |
| <span class="source-line-no">033</span><span id="line-33">public class WALLink extends FileLink {</span> |
| <span class="source-line-no">034</span><span id="line-34"> /**</span> |
| <span class="source-line-no">035</span><span id="line-35"> * @param conf {@link Configuration} from which to extract specific archive locations</span> |
| <span class="source-line-no">036</span><span id="line-36"> * @param serverName Region Server owner of the log</span> |
| <span class="source-line-no">037</span><span id="line-37"> * @param logName WAL file name</span> |
| <span class="source-line-no">038</span><span id="line-38"> * @throws IOException on unexpected error.</span> |
| <span class="source-line-no">039</span><span id="line-39"> */</span> |
| <span class="source-line-no">040</span><span id="line-40"> public WALLink(final Configuration conf, final String serverName, final String logName)</span> |
| <span class="source-line-no">041</span><span id="line-41"> throws IOException {</span> |
| <span class="source-line-no">042</span><span id="line-42"> this(CommonFSUtils.getWALRootDir(conf), serverName, logName);</span> |
| <span class="source-line-no">043</span><span id="line-43"> }</span> |
| <span class="source-line-no">044</span><span id="line-44"></span> |
| <span class="source-line-no">045</span><span id="line-45"> /**</span> |
| <span class="source-line-no">046</span><span id="line-46"> * @param walRootDir Path to the root directory where hbase files are stored</span> |
| <span class="source-line-no">047</span><span id="line-47"> * @param serverName Region Server owner of the log</span> |
| <span class="source-line-no">048</span><span id="line-48"> * @param logName WAL file name</span> |
| <span class="source-line-no">049</span><span id="line-49"> */</span> |
| <span class="source-line-no">050</span><span id="line-50"> public WALLink(final Path walRootDir, final String serverName, final String logName) {</span> |
| <span class="source-line-no">051</span><span id="line-51"> final Path oldLogDir = new Path(walRootDir, HConstants.HREGION_OLDLOGDIR_NAME);</span> |
| <span class="source-line-no">052</span><span id="line-52"> final Path logDir = new Path(new Path(walRootDir, HConstants.HREGION_LOGDIR_NAME), serverName);</span> |
| <span class="source-line-no">053</span><span id="line-53"> setLocations(new Path(logDir, logName), new Path(oldLogDir, logName));</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"> /**</span> |
| <span class="source-line-no">057</span><span id="line-57"> * @param originPath Path to the wal in the log directory</span> |
| <span class="source-line-no">058</span><span id="line-58"> * @param archivePath Path to the wal in the archived log directory</span> |
| <span class="source-line-no">059</span><span id="line-59"> */</span> |
| <span class="source-line-no">060</span><span id="line-60"> public WALLink(final Path originPath, final Path archivePath) {</span> |
| <span class="source-line-no">061</span><span id="line-61"> setLocations(originPath, archivePath);</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> |
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