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| <a name="1" href="#1">1</a> <em class="jxr_comment">/*</em> |
| <a name="2" href="#2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one</em> |
| <a name="3" href="#3">3</a> <em class="jxr_comment"> * or more contributor license agreements. See the NOTICE file</em> |
| <a name="4" href="#4">4</a> <em class="jxr_comment"> * distributed with this work for additional information</em> |
| <a name="5" href="#5">5</a> <em class="jxr_comment"> * regarding copyright ownership. The ASF licenses this file</em> |
| <a name="6" href="#6">6</a> <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em> |
| <a name="7" href="#7">7</a> <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em> |
| <a name="8" href="#8">8</a> <em class="jxr_comment"> * with the License. You may obtain a copy of the License at</em> |
| <a name="9" href="#9">9</a> <em class="jxr_comment"> *</em> |
| <a name="10" href="#10">10</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em> |
| <a name="11" href="#11">11</a> <em class="jxr_comment"> *</em> |
| <a name="12" href="#12">12</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing,</em> |
| <a name="13" href="#13">13</a> <em class="jxr_comment"> * software distributed under the License is distributed on an</em> |
| <a name="14" href="#14">14</a> <em class="jxr_comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em> |
| <a name="15" href="#15">15</a> <em class="jxr_comment"> * KIND, either express or implied. See the License for the</em> |
| <a name="16" href="#16">16</a> <em class="jxr_comment"> * specific language governing permissions and limitations</em> |
| <a name="17" href="#17">17</a> <em class="jxr_comment"> * under the License.</em> |
| <a name="18" href="#18">18</a> <em class="jxr_comment"> */</em> |
| <a name="19" href="#19">19</a> <strong class="jxr_keyword">package</strong> org.apache.shiro.concurrent; |
| <a name="20" href="#20">20</a> |
| <a name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> org.apache.shiro.subject.Subject; |
| <a name="22" href="#22">22</a> |
| <a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> java.util.ArrayList; |
| <a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> java.util.Collection; |
| <a name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.util.List; |
| <a name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.*; |
| <a name="27" href="#27">27</a> |
| <a name="28" href="#28">28</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="29" href="#29">29</a> <em class="jxr_javadoccomment"> * {@code ExecutorService} implementation that will automatically first associate any argument</em> |
| <a name="30" href="#30">30</a> <em class="jxr_javadoccomment"> * {@link Runnable} or {@link Callable} instances with the {@link #getSubject currently available subject} and then</em> |
| <a name="31" href="#31">31</a> <em class="jxr_javadoccomment"> * dispatch the Subject-enabled runnable or callable to an underlying delegate</em> |
| <a name="32" href="#32">32</a> <em class="jxr_javadoccomment"> * {@link java.util.concurrent.ExecutorService ExecutorService} instance. The principle is the same as the</em> |
| <a name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * parent {@link SubjectAwareExecutor} class, but enables the richer {@link ExecutorService} API.</em> |
| <a name="34" href="#34">34</a> <em class="jxr_javadoccomment"> * <p/></em> |
| <a name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * This is a simplification for applications that want to execute code as the currently</em> |
| <a name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * executing {@code Subject} on another thread, but don't want or need to call the</em> |
| <a name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * {@link Subject#associateWith(Runnable)} or {@link Subject#associateWith(Callable)} methods and dispatch them to a</em> |
| <a name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * Thread manually. This simplifies code and reduces Shiro dependencies across application source code.</em> |
| <a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * <p/></em> |
| <a name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * Consider this code that could be repeated in many places across an application:</em> |
| <a name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * <pre></em> |
| <a name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * {@link Callable Callable} applicationWork = //instantiate or acquire Callable from somewhere</em> |
| <a name="43" href="#43">43</a> <em class="jxr_javadoccomment"> * {@link Subject Subject} subject = {@link org.apache.shiro.SecurityUtils SecurityUtils}.{@link org.apache.shiro.SecurityUtils#getSubject() getSubject()};</em> |
| <a name="44" href="#44">44</a> <em class="jxr_javadoccomment"> * {@link Callable Callable} work = subject.{@link Subject#associateWith(Callable) associateWith(applicationWork)};</em> |
| <a name="45" href="#45">45</a> <em class="jxr_javadoccomment"> * {@link ExecutorService anExecutorService}.{@link ExecutorService#submit(Callable) submit(work)};</em> |
| <a name="46" href="#46">46</a> <em class="jxr_javadoccomment"> * </pre></em> |
| <a name="47" href="#47">47</a> <em class="jxr_javadoccomment"> * Instead, if the {@code ExecutorService} instance used at runtime is an instance of this class</em> |
| <a name="48" href="#48">48</a> <em class="jxr_javadoccomment"> * (which delegates to the target ExecutorService that you want), all places in code like the above reduce to this:</em> |
| <a name="49" href="#49">49</a> <em class="jxr_javadoccomment"> * <pre></em> |
| <a name="50" href="#50">50</a> <em class="jxr_javadoccomment"> * {@link Callable Callable} applicationWork = //instantiate or acquire Callable from somewhere</em> |
| <a name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * {@link ExecutorService anExecutorService}.{@link ExecutorService#submit(Callable) submit(work)};</em> |
| <a name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * </pre></em> |
| <a name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * Notice there is no use of the Shiro API in the 2nd code block, encouraging the principle of loose coupling across</em> |
| <a name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * your codebase.</em> |
| <a name="55" href="#55">55</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="56" href="#56">56</a> <em class="jxr_javadoccomment"> * @since 1.0</em> |
| <a name="57" href="#57">57</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="58" href="#58">58</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/shiro/concurrent/SubjectAwareExecutorService.html">SubjectAwareExecutorService</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../org/apache/shiro/concurrent/SubjectAwareExecutor.html">SubjectAwareExecutor</a> implements ExecutorService { |
| <a name="59" href="#59">59</a> |
| <a name="60" href="#60">60</a> <strong class="jxr_keyword">private</strong> ExecutorService targetExecutorService; |
| <a name="61" href="#61">61</a> |
| <a name="62" href="#62">62</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/shiro/concurrent/SubjectAwareExecutorService.html">SubjectAwareExecutorService</a>() { |
| <a name="63" href="#63">63</a> } |
| <a name="64" href="#64">64</a> |
| <a name="65" href="#65">65</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/shiro/concurrent/SubjectAwareExecutorService.html">SubjectAwareExecutorService</a>(ExecutorService target) { |
| <a name="66" href="#66">66</a> setTargetExecutorService(target); |
| <a name="67" href="#67">67</a> } |
| <a name="68" href="#68">68</a> |
| <a name="69" href="#69">69</a> <strong class="jxr_keyword">public</strong> ExecutorService getTargetExecutorService() { |
| <a name="70" href="#70">70</a> <strong class="jxr_keyword">return</strong> targetExecutorService; |
| <a name="71" href="#71">71</a> } |
| <a name="72" href="#72">72</a> |
| <a name="73" href="#73">73</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setTargetExecutorService(ExecutorService targetExecutorService) { |
| <a name="74" href="#74">74</a> <strong class="jxr_keyword">super</strong>.setTargetExecutor(targetExecutorService); |
| <a name="75" href="#75">75</a> <strong class="jxr_keyword">this</strong>.targetExecutorService = targetExecutorService; |
| <a name="76" href="#76">76</a> } |
| <a name="77" href="#77">77</a> |
| <a name="78" href="#78">78</a> @Override |
| <a name="79" href="#79">79</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setTargetExecutor(Executor targetExecutor) { |
| <a name="80" href="#80">80</a> <strong class="jxr_keyword">if</strong> (!(targetExecutor instanceof ExecutorService)) { |
| <a name="81" href="#81">81</a> String msg = <span class="jxr_string">"The "</span> + getClass().getName() + <span class="jxr_string">" implementation only accepts "</span> + |
| <a name="82" href="#82">82</a> ExecutorService.<strong class="jxr_keyword">class</strong>.getName() + <span class="jxr_string">" target instances."</span>; |
| <a name="83" href="#83">83</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(msg); |
| <a name="84" href="#84">84</a> } |
| <a name="85" href="#85">85</a> <strong class="jxr_keyword">super</strong>.setTargetExecutor(targetExecutor); |
| <a name="86" href="#86">86</a> } |
| <a name="87" href="#87">87</a> |
| <a name="88" href="#88">88</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> shutdown() { |
| <a name="89" href="#89">89</a> <strong class="jxr_keyword">this</strong>.targetExecutorService.shutdown(); |
| <a name="90" href="#90">90</a> } |
| <a name="91" href="#91">91</a> |
| <a name="92" href="#92">92</a> <strong class="jxr_keyword">public</strong> List<Runnable> shutdownNow() { |
| <a name="93" href="#93">93</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.shutdownNow(); |
| <a name="94" href="#94">94</a> } |
| <a name="95" href="#95">95</a> |
| <a name="96" href="#96">96</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isShutdown() { |
| <a name="97" href="#97">97</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.isShutdown(); |
| <a name="98" href="#98">98</a> } |
| <a name="99" href="#99">99</a> |
| <a name="100" href="#100">100</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isTerminated() { |
| <a name="101" href="#101">101</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.isTerminated(); |
| <a name="102" href="#102">102</a> } |
| <a name="103" href="#103">103</a> |
| <a name="104" href="#104">104</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> awaitTermination(<strong class="jxr_keyword">long</strong> timeout, TimeUnit unit) <strong class="jxr_keyword">throws</strong> InterruptedException { |
| <a name="105" href="#105">105</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.awaitTermination(timeout, unit); |
| <a name="106" href="#106">106</a> } |
| <a name="107" href="#107">107</a> |
| <a name="108" href="#108">108</a> <strong class="jxr_keyword">protected</strong> <T> Callable<T> associateWithSubject(Callable<T> task) { |
| <a name="109" href="#109">109</a> <a href="../../../../org/apache/shiro/subject/Subject.html">Subject</a> subject = getSubject(); |
| <a name="110" href="#110">110</a> <strong class="jxr_keyword">return</strong> subject.associateWith(task); |
| <a name="111" href="#111">111</a> } |
| <a name="112" href="#112">112</a> |
| <a name="113" href="#113">113</a> <strong class="jxr_keyword">public</strong> <T> Future<T> submit(Callable<T> task) { |
| <a name="114" href="#114">114</a> Callable<T> work = associateWithSubject(task); |
| <a name="115" href="#115">115</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.submit(work); |
| <a name="116" href="#116">116</a> } |
| <a name="117" href="#117">117</a> |
| <a name="118" href="#118">118</a> <strong class="jxr_keyword">public</strong> <T> Future<T> submit(Runnable task, T result) { |
| <a name="119" href="#119">119</a> Runnable work = associateWithSubject(task); |
| <a name="120" href="#120">120</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.submit(work, result); |
| <a name="121" href="#121">121</a> } |
| <a name="122" href="#122">122</a> |
| <a name="123" href="#123">123</a> <strong class="jxr_keyword">public</strong> Future<?> submit(Runnable task) { |
| <a name="124" href="#124">124</a> Runnable work = associateWithSubject(task); |
| <a name="125" href="#125">125</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.submit(work); |
| <a name="126" href="#126">126</a> } |
| <a name="127" href="#127">127</a> |
| <a name="128" href="#128">128</a> <strong class="jxr_keyword">protected</strong> <T> Collection<Callable<T>> associateWithSubject(Collection<? <strong class="jxr_keyword">extends</strong> Callable<T>> tasks) { |
| <a name="129" href="#129">129</a> Collection<Callable<T>> workItems = <strong class="jxr_keyword">new</strong> ArrayList<Callable<T>>(tasks.size()); |
| <a name="130" href="#130">130</a> <strong class="jxr_keyword">for</strong> (Callable<T> task : tasks) { |
| <a name="131" href="#131">131</a> Callable<T> work = associateWithSubject(task); |
| <a name="132" href="#132">132</a> workItems.add(work); |
| <a name="133" href="#133">133</a> } |
| <a name="134" href="#134">134</a> <strong class="jxr_keyword">return</strong> workItems; |
| <a name="135" href="#135">135</a> } |
| <a name="136" href="#136">136</a> |
| <a name="137" href="#137">137</a> <strong class="jxr_keyword">public</strong> <T> List<Future<T>> invokeAll(Collection<? <strong class="jxr_keyword">extends</strong> Callable<T>> tasks) <strong class="jxr_keyword">throws</strong> InterruptedException { |
| <a name="138" href="#138">138</a> Collection<Callable<T>> workItems = associateWithSubject(tasks); |
| <a name="139" href="#139">139</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.invokeAll(workItems); |
| <a name="140" href="#140">140</a> } |
| <a name="141" href="#141">141</a> |
| <a name="142" href="#142">142</a> <strong class="jxr_keyword">public</strong> <T> List<Future<T>> invokeAll(Collection<? <strong class="jxr_keyword">extends</strong> Callable<T>> tasks, <strong class="jxr_keyword">long</strong> timeout, TimeUnit unit) |
| <a name="143" href="#143">143</a> <strong class="jxr_keyword">throws</strong> InterruptedException { |
| <a name="144" href="#144">144</a> Collection<Callable<T>> workItems = associateWithSubject(tasks); |
| <a name="145" href="#145">145</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.invokeAll(workItems, timeout, unit); |
| <a name="146" href="#146">146</a> } |
| <a name="147" href="#147">147</a> |
| <a name="148" href="#148">148</a> <strong class="jxr_keyword">public</strong> <T> T invokeAny(Collection<? <strong class="jxr_keyword">extends</strong> Callable<T>> tasks) <strong class="jxr_keyword">throws</strong> InterruptedException, ExecutionException { |
| <a name="149" href="#149">149</a> Collection<Callable<T>> workItems = associateWithSubject(tasks); |
| <a name="150" href="#150">150</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.invokeAny(workItems); |
| <a name="151" href="#151">151</a> } |
| <a name="152" href="#152">152</a> |
| <a name="153" href="#153">153</a> <strong class="jxr_keyword">public</strong> <T> T invokeAny(Collection<? <strong class="jxr_keyword">extends</strong> Callable<T>> tasks, <strong class="jxr_keyword">long</strong> timeout, TimeUnit unit) |
| <a name="154" href="#154">154</a> <strong class="jxr_keyword">throws</strong> InterruptedException, ExecutionException, TimeoutException { |
| <a name="155" href="#155">155</a> Collection<Callable<T>> workItems = associateWithSubject(tasks); |
| <a name="156" href="#156">156</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.invokeAny(workItems, timeout, unit); |
| <a name="157" href="#157">157</a> } |
| <a name="158" href="#158">158</a> } |
| </pre> |
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