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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.quotas;</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.util.Objects;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.concurrent.ConcurrentHashMap;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.concurrent.ConcurrentMap;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.commons.lang3.builder.HashCodeBuilder;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.fs.FileSystem;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.client.Connection;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">029</span><span id="line-29"></span> |
| <span class="source-line-no">030</span><span id="line-30">/**</span> |
| <span class="source-line-no">031</span><span id="line-31"> * A factory for getting instances of {@link FileArchiverNotifier}.</span> |
| <span class="source-line-no">032</span><span id="line-32"> */</span> |
| <span class="source-line-no">033</span><span id="line-33">@InterfaceAudience.Private</span> |
| <span class="source-line-no">034</span><span id="line-34">public final class FileArchiverNotifierFactoryImpl implements FileArchiverNotifierFactory {</span> |
| <span class="source-line-no">035</span><span id="line-35"> private static final FileArchiverNotifierFactoryImpl DEFAULT_INSTANCE =</span> |
| <span class="source-line-no">036</span><span id="line-36"> new FileArchiverNotifierFactoryImpl();</span> |
| <span class="source-line-no">037</span><span id="line-37"> private static volatile FileArchiverNotifierFactory CURRENT_INSTANCE = DEFAULT_INSTANCE;</span> |
| <span class="source-line-no">038</span><span id="line-38"> private final ConcurrentMap<TableName, FileArchiverNotifier> CACHE;</span> |
| <span class="source-line-no">039</span><span id="line-39"></span> |
| <span class="source-line-no">040</span><span id="line-40"> private FileArchiverNotifierFactoryImpl() {</span> |
| <span class="source-line-no">041</span><span id="line-41"> CACHE = new ConcurrentHashMap<>();</span> |
| <span class="source-line-no">042</span><span id="line-42"> }</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44"> public static FileArchiverNotifierFactory getInstance() {</span> |
| <span class="source-line-no">045</span><span id="line-45"> return CURRENT_INSTANCE;</span> |
| <span class="source-line-no">046</span><span id="line-46"> }</span> |
| <span class="source-line-no">047</span><span id="line-47"></span> |
| <span class="source-line-no">048</span><span id="line-48"> static void setInstance(FileArchiverNotifierFactory inst) {</span> |
| <span class="source-line-no">049</span><span id="line-49"> CURRENT_INSTANCE = Objects.requireNonNull(inst);</span> |
| <span class="source-line-no">050</span><span id="line-50"> }</span> |
| <span class="source-line-no">051</span><span id="line-51"></span> |
| <span class="source-line-no">052</span><span id="line-52"> static void reset() {</span> |
| <span class="source-line-no">053</span><span id="line-53"> CURRENT_INSTANCE = DEFAULT_INSTANCE;</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"> * Returns the {@link FileArchiverNotifier} instance for the given {@link TableName}.</span> |
| <span class="source-line-no">058</span><span id="line-58"> * @param tn The table to obtain a notifier for</span> |
| <span class="source-line-no">059</span><span id="line-59"> * @return The notifier for the given {@code tablename}.</span> |
| <span class="source-line-no">060</span><span id="line-60"> */</span> |
| <span class="source-line-no">061</span><span id="line-61"> public FileArchiverNotifier get(Connection conn, Configuration conf, FileSystem fs,</span> |
| <span class="source-line-no">062</span><span id="line-62"> TableName tn) {</span> |
| <span class="source-line-no">063</span><span id="line-63"> // Ensure that only one instance is exposed to callers</span> |
| <span class="source-line-no">064</span><span id="line-64"> return CACHE.computeIfAbsent(tn, key -> new FileArchiverNotifierImpl(conn, conf, fs, key));</span> |
| <span class="source-line-no">065</span><span id="line-65"> }</span> |
| <span class="source-line-no">066</span><span id="line-66"></span> |
| <span class="source-line-no">067</span><span id="line-67"> public int getCacheSize() {</span> |
| <span class="source-line-no">068</span><span id="line-68"> return CACHE.size();</span> |
| <span class="source-line-no">069</span><span id="line-69"> }</span> |
| <span class="source-line-no">070</span><span id="line-70"></span> |
| <span class="source-line-no">071</span><span id="line-71"> static class CacheKey {</span> |
| <span class="source-line-no">072</span><span id="line-72"> final Connection conn;</span> |
| <span class="source-line-no">073</span><span id="line-73"> final Configuration conf;</span> |
| <span class="source-line-no">074</span><span id="line-74"> final FileSystem fs;</span> |
| <span class="source-line-no">075</span><span id="line-75"> final TableName tn;</span> |
| <span class="source-line-no">076</span><span id="line-76"></span> |
| <span class="source-line-no">077</span><span id="line-77"> CacheKey(Connection conn, Configuration conf, FileSystem fs, TableName tn) {</span> |
| <span class="source-line-no">078</span><span id="line-78"> this.conn = conn;</span> |
| <span class="source-line-no">079</span><span id="line-79"> this.conf = conf;</span> |
| <span class="source-line-no">080</span><span id="line-80"> this.fs = fs;</span> |
| <span class="source-line-no">081</span><span id="line-81"> this.tn = tn;</span> |
| <span class="source-line-no">082</span><span id="line-82"> }</span> |
| <span class="source-line-no">083</span><span id="line-83"></span> |
| <span class="source-line-no">084</span><span id="line-84"> @Override</span> |
| <span class="source-line-no">085</span><span id="line-85"> public boolean equals(Object o) {</span> |
| <span class="source-line-no">086</span><span id="line-86"> if (!(o instanceof CacheKey)) {</span> |
| <span class="source-line-no">087</span><span id="line-87"> return false;</span> |
| <span class="source-line-no">088</span><span id="line-88"> }</span> |
| <span class="source-line-no">089</span><span id="line-89"> CacheKey other = (CacheKey) o;</span> |
| <span class="source-line-no">090</span><span id="line-90"> // TableName should be the only thing differing..</span> |
| <span class="source-line-no">091</span><span id="line-91"> return tn.equals(other.tn) && conn.equals(other.conn) && conf.equals(other.conf)</span> |
| <span class="source-line-no">092</span><span id="line-92"> && fs.equals(other.fs);</span> |
| <span class="source-line-no">093</span><span id="line-93"> }</span> |
| <span class="source-line-no">094</span><span id="line-94"></span> |
| <span class="source-line-no">095</span><span id="line-95"> @Override</span> |
| <span class="source-line-no">096</span><span id="line-96"> public int hashCode() {</span> |
| <span class="source-line-no">097</span><span id="line-97"> return new HashCodeBuilder().append(conn).append(conf).append(fs).append(tn).toHashCode();</span> |
| <span class="source-line-no">098</span><span id="line-98"> }</span> |
| <span class="source-line-no">099</span><span id="line-99"></span> |
| <span class="source-line-no">100</span><span id="line-100"> @Override</span> |
| <span class="source-line-no">101</span><span id="line-101"> public String toString() {</span> |
| <span class="source-line-no">102</span><span id="line-102"> return "CacheKey[TableName=" + tn + "]";</span> |
| <span class="source-line-no">103</span><span id="line-103"> }</span> |
| <span class="source-line-no">104</span><span id="line-104"> }</span> |
| <span class="source-line-no">105</span><span id="line-105">}</span> |
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| </pre> |
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