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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.client;</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.Collections;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.HashMap;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.Map;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.TreeMap;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.stream.Collectors;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.util.ClassSize;</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">@InterfaceAudience.Public</span> |
| <span class="source-line-no">031</span><span id="line-31">public abstract class OperationWithAttributes extends Operation implements Attributes {</span> |
| <span class="source-line-no">032</span><span id="line-32"> // An opaque blob of attributes</span> |
| <span class="source-line-no">033</span><span id="line-33"> private Map<String, byte[]> attributes;</span> |
| <span class="source-line-no">034</span><span id="line-34"></span> |
| <span class="source-line-no">035</span><span id="line-35"> // used for uniquely identifying an operation</span> |
| <span class="source-line-no">036</span><span id="line-36"> public static final String ID_ATRIBUTE = "_operation.attributes.id";</span> |
| <span class="source-line-no">037</span><span id="line-37"> private int priority = HConstants.PRIORITY_UNSET;</span> |
| <span class="source-line-no">038</span><span id="line-38"></span> |
| <span class="source-line-no">039</span><span id="line-39"> /**</span> |
| <span class="source-line-no">040</span><span id="line-40"> * empty construction. We need this empty construction to keep binary compatibility.</span> |
| <span class="source-line-no">041</span><span id="line-41"> */</span> |
| <span class="source-line-no">042</span><span id="line-42"> protected OperationWithAttributes() {</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"> protected OperationWithAttributes(OperationWithAttributes clone) {</span> |
| <span class="source-line-no">046</span><span id="line-46"> this.attributes = clone.getAttributesMap() == null</span> |
| <span class="source-line-no">047</span><span id="line-47"> ? null</span> |
| <span class="source-line-no">048</span><span id="line-48"> : clone.getAttributesMap().entrySet().stream()</span> |
| <span class="source-line-no">049</span><span id="line-49"> .collect(Collectors.toMap(e -> e.getKey(), e -> e.getValue(), (k, v) -> {</span> |
| <span class="source-line-no">050</span><span id="line-50"> throw new RuntimeException("collisions!!!");</span> |
| <span class="source-line-no">051</span><span id="line-51"> }, () -> new TreeMap<>()));</span> |
| <span class="source-line-no">052</span><span id="line-52"> this.priority = clone.getPriority();</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"> @Override</span> |
| <span class="source-line-no">056</span><span id="line-56"> public OperationWithAttributes setAttribute(String name, byte[] value) {</span> |
| <span class="source-line-no">057</span><span id="line-57"> if (attributes == null && value == null) {</span> |
| <span class="source-line-no">058</span><span id="line-58"> return this;</span> |
| <span class="source-line-no">059</span><span id="line-59"> }</span> |
| <span class="source-line-no">060</span><span id="line-60"></span> |
| <span class="source-line-no">061</span><span id="line-61"> if (attributes == null) {</span> |
| <span class="source-line-no">062</span><span id="line-62"> attributes = new HashMap<>();</span> |
| <span class="source-line-no">063</span><span id="line-63"> }</span> |
| <span class="source-line-no">064</span><span id="line-64"></span> |
| <span class="source-line-no">065</span><span id="line-65"> if (value == null) {</span> |
| <span class="source-line-no">066</span><span id="line-66"> attributes.remove(name);</span> |
| <span class="source-line-no">067</span><span id="line-67"> if (attributes.isEmpty()) {</span> |
| <span class="source-line-no">068</span><span id="line-68"> this.attributes = null;</span> |
| <span class="source-line-no">069</span><span id="line-69"> }</span> |
| <span class="source-line-no">070</span><span id="line-70"> } else {</span> |
| <span class="source-line-no">071</span><span id="line-71"> attributes.put(name, value);</span> |
| <span class="source-line-no">072</span><span id="line-72"> }</span> |
| <span class="source-line-no">073</span><span id="line-73"> return this;</span> |
| <span class="source-line-no">074</span><span id="line-74"> }</span> |
| <span class="source-line-no">075</span><span id="line-75"></span> |
| <span class="source-line-no">076</span><span id="line-76"> @Override</span> |
| <span class="source-line-no">077</span><span id="line-77"> public byte[] getAttribute(String name) {</span> |
| <span class="source-line-no">078</span><span id="line-78"> if (attributes == null) {</span> |
| <span class="source-line-no">079</span><span id="line-79"> return null;</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"> return attributes.get(name);</span> |
| <span class="source-line-no">083</span><span id="line-83"> }</span> |
| <span class="source-line-no">084</span><span id="line-84"></span> |
| <span class="source-line-no">085</span><span id="line-85"> @Override</span> |
| <span class="source-line-no">086</span><span id="line-86"> public Map<String, byte[]> getAttributesMap() {</span> |
| <span class="source-line-no">087</span><span id="line-87"> if (attributes == null) {</span> |
| <span class="source-line-no">088</span><span id="line-88"> return Collections.emptyMap();</span> |
| <span class="source-line-no">089</span><span id="line-89"> }</span> |
| <span class="source-line-no">090</span><span id="line-90"> return Collections.unmodifiableMap(attributes);</span> |
| <span class="source-line-no">091</span><span id="line-91"> }</span> |
| <span class="source-line-no">092</span><span id="line-92"></span> |
| <span class="source-line-no">093</span><span id="line-93"> protected long getAttributeSize() {</span> |
| <span class="source-line-no">094</span><span id="line-94"> long size = 0;</span> |
| <span class="source-line-no">095</span><span id="line-95"> if (attributes != null) {</span> |
| <span class="source-line-no">096</span><span id="line-96"> size += ClassSize.align(this.attributes.size() * ClassSize.MAP_ENTRY);</span> |
| <span class="source-line-no">097</span><span id="line-97"> for (Map.Entry<String, byte[]> entry : this.attributes.entrySet()) {</span> |
| <span class="source-line-no">098</span><span id="line-98"> size += ClassSize.align(ClassSize.STRING + entry.getKey().length());</span> |
| <span class="source-line-no">099</span><span id="line-99"> size += ClassSize.align(ClassSize.ARRAY + entry.getValue().length);</span> |
| <span class="source-line-no">100</span><span id="line-100"> }</span> |
| <span class="source-line-no">101</span><span id="line-101"> }</span> |
| <span class="source-line-no">102</span><span id="line-102"> return size;</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> |
| <span class="source-line-no">106</span><span id="line-106"> * This method allows you to set an identifier on an operation. The original motivation for this</span> |
| <span class="source-line-no">107</span><span id="line-107"> * was to allow the identifier to be used in slow query logging, but this could obviously be</span> |
| <span class="source-line-no">108</span><span id="line-108"> * useful in other places. One use of this could be to put a class.method identifier in here to</span> |
| <span class="source-line-no">109</span><span id="line-109"> * see where the slow query is coming from. id to set for the scan</span> |
| <span class="source-line-no">110</span><span id="line-110"> */</span> |
| <span class="source-line-no">111</span><span id="line-111"> public OperationWithAttributes setId(String id) {</span> |
| <span class="source-line-no">112</span><span id="line-112"> setAttribute(ID_ATRIBUTE, Bytes.toBytes(id));</span> |
| <span class="source-line-no">113</span><span id="line-113"> return this;</span> |
| <span class="source-line-no">114</span><span id="line-114"> }</span> |
| <span class="source-line-no">115</span><span id="line-115"></span> |
| <span class="source-line-no">116</span><span id="line-116"> /**</span> |
| <span class="source-line-no">117</span><span id="line-117"> * This method allows you to retrieve the identifier for the operation if one was set.</span> |
| <span class="source-line-no">118</span><span id="line-118"> * @return the id or null if not set</span> |
| <span class="source-line-no">119</span><span id="line-119"> */</span> |
| <span class="source-line-no">120</span><span id="line-120"> public String getId() {</span> |
| <span class="source-line-no">121</span><span id="line-121"> byte[] attr = getAttribute(ID_ATRIBUTE);</span> |
| <span class="source-line-no">122</span><span id="line-122"> return attr == null ? null : Bytes.toString(attr);</span> |
| <span class="source-line-no">123</span><span id="line-123"> }</span> |
| <span class="source-line-no">124</span><span id="line-124"></span> |
| <span class="source-line-no">125</span><span id="line-125"> public OperationWithAttributes setPriority(int priority) {</span> |
| <span class="source-line-no">126</span><span id="line-126"> this.priority = priority;</span> |
| <span class="source-line-no">127</span><span id="line-127"> return this;</span> |
| <span class="source-line-no">128</span><span id="line-128"> }</span> |
| <span class="source-line-no">129</span><span id="line-129"></span> |
| <span class="source-line-no">130</span><span id="line-130"> public int getPriority() {</span> |
| <span class="source-line-no">131</span><span id="line-131"> return priority;</span> |
| <span class="source-line-no">132</span><span id="line-132"> }</span> |
| <span class="source-line-no">133</span><span id="line-133"></span> |
| <span class="source-line-no">134</span><span id="line-134">}</span> |
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| </pre> |
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