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| <div id="overview"><a href="../../../../../apidocs/org/apache/shiro/concurrent/SubjectAwareExecutorService.html">View Javadoc</a></div><pre> |
| <a class="jxr_linenumber" name="L1" href="#L1">1</a> <em class="jxr_comment">/*</em> |
| <a class="jxr_linenumber" name="L2" href="#L2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one</em> |
| <a class="jxr_linenumber" name="L3" href="#L3">3</a> <em class="jxr_comment"> * or more contributor license agreements. See the NOTICE file</em> |
| <a class="jxr_linenumber" name="L4" href="#L4">4</a> <em class="jxr_comment"> * distributed with this work for additional information</em> |
| <a class="jxr_linenumber" name="L5" href="#L5">5</a> <em class="jxr_comment"> * regarding copyright ownership. The ASF licenses this file</em> |
| <a class="jxr_linenumber" name="L6" href="#L6">6</a> <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em> |
| <a class="jxr_linenumber" name="L7" href="#L7">7</a> <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em> |
| <a class="jxr_linenumber" name="L8" href="#L8">8</a> <em class="jxr_comment"> * with the License. You may obtain a copy of the License at</em> |
| <a class="jxr_linenumber" name="L9" href="#L9">9</a> <em class="jxr_comment"> *</em> |
| <a class="jxr_linenumber" name="L10" href="#L10">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 class="jxr_linenumber" name="L11" href="#L11">11</a> <em class="jxr_comment"> *</em> |
| <a class="jxr_linenumber" name="L12" href="#L12">12</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing,</em> |
| <a class="jxr_linenumber" name="L13" href="#L13">13</a> <em class="jxr_comment"> * software distributed under the License is distributed on an</em> |
| <a class="jxr_linenumber" name="L14" href="#L14">14</a> <em class="jxr_comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em> |
| <a class="jxr_linenumber" name="L15" href="#L15">15</a> <em class="jxr_comment"> * KIND, either express or implied. See the License for the</em> |
| <a class="jxr_linenumber" name="L16" href="#L16">16</a> <em class="jxr_comment"> * specific language governing permissions and limitations</em> |
| <a class="jxr_linenumber" name="L17" href="#L17">17</a> <em class="jxr_comment"> * under the License.</em> |
| <a class="jxr_linenumber" name="L18" href="#L18">18</a> <em class="jxr_comment"> */</em> |
| <a class="jxr_linenumber" name="L19" href="#L19">19</a> <strong class="jxr_keyword">package</strong> org.apache.shiro.concurrent; |
| <a class="jxr_linenumber" name="L20" href="#L20">20</a> |
| <a class="jxr_linenumber" name="L21" href="#L21">21</a> <strong class="jxr_keyword">import</strong> org.apache.shiro.subject.Subject; |
| <a class="jxr_linenumber" name="L22" href="#L22">22</a> |
| <a class="jxr_linenumber" name="L23" href="#L23">23</a> <strong class="jxr_keyword">import</strong> java.util.ArrayList; |
| <a class="jxr_linenumber" name="L24" href="#L24">24</a> <strong class="jxr_keyword">import</strong> java.util.Collection; |
| <a class="jxr_linenumber" name="L25" href="#L25">25</a> <strong class="jxr_keyword">import</strong> java.util.List; |
| <a class="jxr_linenumber" name="L26" href="#L26">26</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.*; |
| <a class="jxr_linenumber" name="L27" href="#L27">27</a> |
| <a class="jxr_linenumber" name="L28" href="#L28">28</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L29" href="#L29">29</a> <em class="jxr_javadoccomment"> * {@code ExecutorService} implementation that will automatically first associate any argument</em> |
| <a class="jxr_linenumber" name="L30" href="#L30">30</a> <em class="jxr_javadoccomment"> * {@link Runnable} or {@link Callable} instances with the {@link #getSubject currently available subject} and then</em> |
| <a class="jxr_linenumber" name="L31" href="#L31">31</a> <em class="jxr_javadoccomment"> * dispatch the Subject-enabled runnable or callable to an underlying delegate</em> |
| <a class="jxr_linenumber" name="L32" href="#L32">32</a> <em class="jxr_javadoccomment"> * {@link java.util.concurrent.ExecutorService ExecutorService} instance. The principle is the same as the</em> |
| <a class="jxr_linenumber" name="L33" href="#L33">33</a> <em class="jxr_javadoccomment"> * parent {@link SubjectAwareExecutor} class, but enables the richer {@link ExecutorService} API.</em> |
| <a class="jxr_linenumber" name="L34" href="#L34">34</a> <em class="jxr_javadoccomment"> * <p/></em> |
| <a class="jxr_linenumber" name="L35" href="#L35">35</a> <em class="jxr_javadoccomment"> * This is a simplification for applications that want to execute code as the currently</em> |
| <a class="jxr_linenumber" name="L36" href="#L36">36</a> <em class="jxr_javadoccomment"> * executing {@code Subject} on another thread, but don't want or need to call the</em> |
| <a class="jxr_linenumber" name="L37" href="#L37">37</a> <em class="jxr_javadoccomment"> * {@link Subject#associateWith(Runnable)} or {@link Subject#associateWith(Callable)} methods and dispatch them to a</em> |
| <a class="jxr_linenumber" name="L38" href="#L38">38</a> <em class="jxr_javadoccomment"> * Thread manually. This simplifies code and reduces Shiro dependencies across application source code.</em> |
| <a class="jxr_linenumber" name="L39" href="#L39">39</a> <em class="jxr_javadoccomment"> * <p/></em> |
| <a class="jxr_linenumber" name="L40" href="#L40">40</a> <em class="jxr_javadoccomment"> * Consider this code that could be repeated in many places across an application:</em> |
| <a class="jxr_linenumber" name="L41" href="#L41">41</a> <em class="jxr_javadoccomment"> * <pre></em> |
| <a class="jxr_linenumber" name="L42" href="#L42">42</a> <em class="jxr_javadoccomment"> * {@link Callable Callable} applicationWork = //instantiate or acquire Callable from somewhere</em> |
| <a class="jxr_linenumber" name="L43" href="#L43">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 class="jxr_linenumber" name="L44" href="#L44">44</a> <em class="jxr_javadoccomment"> * {@link Callable Callable} work = subject.{@link Subject#associateWith(Callable) associateWith(applicationWork)};</em> |
| <a class="jxr_linenumber" name="L45" href="#L45">45</a> <em class="jxr_javadoccomment"> * {@link ExecutorService anExecutorService}.{@link ExecutorService#submit(Callable) submit(work)};</em> |
| <a class="jxr_linenumber" name="L46" href="#L46">46</a> <em class="jxr_javadoccomment"> * </pre></em> |
| <a class="jxr_linenumber" name="L47" href="#L47">47</a> <em class="jxr_javadoccomment"> * Instead, if the {@code ExecutorService} instance used at runtime is an instance of this class</em> |
| <a class="jxr_linenumber" name="L48" href="#L48">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 class="jxr_linenumber" name="L49" href="#L49">49</a> <em class="jxr_javadoccomment"> * <pre></em> |
| <a class="jxr_linenumber" name="L50" href="#L50">50</a> <em class="jxr_javadoccomment"> * {@link Callable Callable} applicationWork = //instantiate or acquire Callable from somewhere</em> |
| <a class="jxr_linenumber" name="L51" href="#L51">51</a> <em class="jxr_javadoccomment"> * {@link ExecutorService anExecutorService}.{@link ExecutorService#submit(Callable) submit(work)};</em> |
| <a class="jxr_linenumber" name="L52" href="#L52">52</a> <em class="jxr_javadoccomment"> * </pre></em> |
| <a class="jxr_linenumber" name="L53" href="#L53">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 class="jxr_linenumber" name="L54" href="#L54">54</a> <em class="jxr_javadoccomment"> * your codebase.</em> |
| <a class="jxr_linenumber" name="L55" href="#L55">55</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="L56" href="#L56">56</a> <em class="jxr_javadoccomment"> * @since 1.0</em> |
| <a class="jxr_linenumber" name="L57" href="#L57">57</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L58" href="#L58">58</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a name="SubjectAwareExecutorService" href="../../../../org/apache/shiro/concurrent/SubjectAwareExecutorService.html#SubjectAwareExecutorService">SubjectAwareExecutorService</a> <strong class="jxr_keyword">extends</strong> <a name="SubjectAwareExecutor" href="../../../../org/apache/shiro/concurrent/SubjectAwareExecutor.html#SubjectAwareExecutor">SubjectAwareExecutor</a> <strong class="jxr_keyword">implements</strong> ExecutorService { |
| <a class="jxr_linenumber" name="L59" href="#L59">59</a> |
| <a class="jxr_linenumber" name="L60" href="#L60">60</a> <strong class="jxr_keyword">private</strong> ExecutorService targetExecutorService; |
| <a class="jxr_linenumber" name="L61" href="#L61">61</a> |
| <a class="jxr_linenumber" name="L62" href="#L62">62</a> <strong class="jxr_keyword">public</strong> <a name="SubjectAwareExecutorService" href="../../../../org/apache/shiro/concurrent/SubjectAwareExecutorService.html#SubjectAwareExecutorService">SubjectAwareExecutorService</a>() { |
| <a class="jxr_linenumber" name="L63" href="#L63">63</a> } |
| <a class="jxr_linenumber" name="L64" href="#L64">64</a> |
| <a class="jxr_linenumber" name="L65" href="#L65">65</a> <strong class="jxr_keyword">public</strong> <a name="SubjectAwareExecutorService" href="../../../../org/apache/shiro/concurrent/SubjectAwareExecutorService.html#SubjectAwareExecutorService">SubjectAwareExecutorService</a>(ExecutorService target) { |
| <a class="jxr_linenumber" name="L66" href="#L66">66</a> setTargetExecutorService(target); |
| <a class="jxr_linenumber" name="L67" href="#L67">67</a> } |
| <a class="jxr_linenumber" name="L68" href="#L68">68</a> |
| <a class="jxr_linenumber" name="L69" href="#L69">69</a> <strong class="jxr_keyword">public</strong> ExecutorService getTargetExecutorService() { |
| <a class="jxr_linenumber" name="L70" href="#L70">70</a> <strong class="jxr_keyword">return</strong> targetExecutorService; |
| <a class="jxr_linenumber" name="L71" href="#L71">71</a> } |
| <a class="jxr_linenumber" name="L72" href="#L72">72</a> |
| <a class="jxr_linenumber" name="L73" href="#L73">73</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setTargetExecutorService(ExecutorService targetExecutorService) { |
| <a class="jxr_linenumber" name="L74" href="#L74">74</a> <strong class="jxr_keyword">super</strong>.setTargetExecutor(targetExecutorService); |
| <a class="jxr_linenumber" name="L75" href="#L75">75</a> <strong class="jxr_keyword">this</strong>.targetExecutorService = targetExecutorService; |
| <a class="jxr_linenumber" name="L76" href="#L76">76</a> } |
| <a class="jxr_linenumber" name="L77" href="#L77">77</a> |
| <a class="jxr_linenumber" name="L78" href="#L78">78</a> @Override |
| <a class="jxr_linenumber" name="L79" href="#L79">79</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setTargetExecutor(Executor targetExecutor) { |
| <a class="jxr_linenumber" name="L80" href="#L80">80</a> <strong class="jxr_keyword">if</strong> (!(targetExecutor instanceof ExecutorService)) { |
| <a class="jxr_linenumber" name="L81" href="#L81">81</a> String msg = <span class="jxr_string">"The "</span> + getClass().getName() + <span class="jxr_string">" implementation only accepts "</span> + |
| <a class="jxr_linenumber" name="L82" href="#L82">82</a> ExecutorService.<strong class="jxr_keyword">class</strong>.getName() + <span class="jxr_string">" target instances."</span>; |
| <a class="jxr_linenumber" name="L83" href="#L83">83</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(msg); |
| <a class="jxr_linenumber" name="L84" href="#L84">84</a> } |
| <a class="jxr_linenumber" name="L85" href="#L85">85</a> <strong class="jxr_keyword">super</strong>.setTargetExecutor(targetExecutor); |
| <a class="jxr_linenumber" name="L86" href="#L86">86</a> } |
| <a class="jxr_linenumber" name="L87" href="#L87">87</a> |
| <a class="jxr_linenumber" name="L88" href="#L88">88</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> shutdown() { |
| <a class="jxr_linenumber" name="L89" href="#L89">89</a> <strong class="jxr_keyword">this</strong>.targetExecutorService.shutdown(); |
| <a class="jxr_linenumber" name="L90" href="#L90">90</a> } |
| <a class="jxr_linenumber" name="L91" href="#L91">91</a> |
| <a class="jxr_linenumber" name="L92" href="#L92">92</a> <strong class="jxr_keyword">public</strong> List<Runnable> shutdownNow() { |
| <a class="jxr_linenumber" name="L93" href="#L93">93</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.shutdownNow(); |
| <a class="jxr_linenumber" name="L94" href="#L94">94</a> } |
| <a class="jxr_linenumber" name="L95" href="#L95">95</a> |
| <a class="jxr_linenumber" name="L96" href="#L96">96</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isShutdown() { |
| <a class="jxr_linenumber" name="L97" href="#L97">97</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.isShutdown(); |
| <a class="jxr_linenumber" name="L98" href="#L98">98</a> } |
| <a class="jxr_linenumber" name="L99" href="#L99">99</a> |
| <a class="jxr_linenumber" name="L100" href="#L100">100</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isTerminated() { |
| <a class="jxr_linenumber" name="L101" href="#L101">101</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.isTerminated(); |
| <a class="jxr_linenumber" name="L102" href="#L102">102</a> } |
| <a class="jxr_linenumber" name="L103" href="#L103">103</a> |
| <a class="jxr_linenumber" name="L104" href="#L104">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 class="jxr_linenumber" name="L105" href="#L105">105</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.awaitTermination(timeout, unit); |
| <a class="jxr_linenumber" name="L106" href="#L106">106</a> } |
| <a class="jxr_linenumber" name="L107" href="#L107">107</a> |
| <a class="jxr_linenumber" name="L108" href="#L108">108</a> <strong class="jxr_keyword">protected</strong> <T> Callable<T> associateWithSubject(Callable<T> task) { |
| <a class="jxr_linenumber" name="L109" href="#L109">109</a> <a name="Subject" href="../../../../org/apache/shiro/subject/Subject.html#Subject">Subject</a> subject = getSubject(); |
| <a class="jxr_linenumber" name="L110" href="#L110">110</a> <strong class="jxr_keyword">return</strong> subject.associateWith(task); |
| <a class="jxr_linenumber" name="L111" href="#L111">111</a> } |
| <a class="jxr_linenumber" name="L112" href="#L112">112</a> |
| <a class="jxr_linenumber" name="L113" href="#L113">113</a> <strong class="jxr_keyword">public</strong> <T> Future<T> submit(Callable<T> task) { |
| <a class="jxr_linenumber" name="L114" href="#L114">114</a> Callable<T> work = associateWithSubject(task); |
| <a class="jxr_linenumber" name="L115" href="#L115">115</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.submit(work); |
| <a class="jxr_linenumber" name="L116" href="#L116">116</a> } |
| <a class="jxr_linenumber" name="L117" href="#L117">117</a> |
| <a class="jxr_linenumber" name="L118" href="#L118">118</a> <strong class="jxr_keyword">public</strong> <T> Future<T> submit(Runnable task, T result) { |
| <a class="jxr_linenumber" name="L119" href="#L119">119</a> Runnable work = associateWithSubject(task); |
| <a class="jxr_linenumber" name="L120" href="#L120">120</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.submit(work, result); |
| <a class="jxr_linenumber" name="L121" href="#L121">121</a> } |
| <a class="jxr_linenumber" name="L122" href="#L122">122</a> |
| <a class="jxr_linenumber" name="L123" href="#L123">123</a> <strong class="jxr_keyword">public</strong> Future<?> submit(Runnable task) { |
| <a class="jxr_linenumber" name="L124" href="#L124">124</a> Runnable work = associateWithSubject(task); |
| <a class="jxr_linenumber" name="L125" href="#L125">125</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.submit(work); |
| <a class="jxr_linenumber" name="L126" href="#L126">126</a> } |
| <a class="jxr_linenumber" name="L127" href="#L127">127</a> |
| <a class="jxr_linenumber" name="L128" href="#L128">128</a> <strong class="jxr_keyword">protected</strong> <T> Collection<Callable<T>> associateWithSubject(Collection<? <strong class="jxr_keyword">extends</strong> Callable<T>> tasks) { |
| <a class="jxr_linenumber" name="L129" href="#L129">129</a> Collection<Callable<T>> workItems = <strong class="jxr_keyword">new</strong> ArrayList<Callable<T>>(tasks.size()); |
| <a class="jxr_linenumber" name="L130" href="#L130">130</a> <strong class="jxr_keyword">for</strong> (Callable<T> task : tasks) { |
| <a class="jxr_linenumber" name="L131" href="#L131">131</a> Callable<T> work = associateWithSubject(task); |
| <a class="jxr_linenumber" name="L132" href="#L132">132</a> workItems.add(work); |
| <a class="jxr_linenumber" name="L133" href="#L133">133</a> } |
| <a class="jxr_linenumber" name="L134" href="#L134">134</a> <strong class="jxr_keyword">return</strong> workItems; |
| <a class="jxr_linenumber" name="L135" href="#L135">135</a> } |
| <a class="jxr_linenumber" name="L136" href="#L136">136</a> |
| <a class="jxr_linenumber" name="L137" href="#L137">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 class="jxr_linenumber" name="L138" href="#L138">138</a> Collection<Callable<T>> workItems = associateWithSubject(tasks); |
| <a class="jxr_linenumber" name="L139" href="#L139">139</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.invokeAll(workItems); |
| <a class="jxr_linenumber" name="L140" href="#L140">140</a> } |
| <a class="jxr_linenumber" name="L141" href="#L141">141</a> |
| <a class="jxr_linenumber" name="L142" href="#L142">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 class="jxr_linenumber" name="L143" href="#L143">143</a> <strong class="jxr_keyword">throws</strong> InterruptedException { |
| <a class="jxr_linenumber" name="L144" href="#L144">144</a> Collection<Callable<T>> workItems = associateWithSubject(tasks); |
| <a class="jxr_linenumber" name="L145" href="#L145">145</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.invokeAll(workItems, timeout, unit); |
| <a class="jxr_linenumber" name="L146" href="#L146">146</a> } |
| <a class="jxr_linenumber" name="L147" href="#L147">147</a> |
| <a class="jxr_linenumber" name="L148" href="#L148">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, <a name="ExecutionException" href="../../../../org/apache/shiro/subject/ExecutionException.html#ExecutionException">ExecutionException</a> { |
| <a class="jxr_linenumber" name="L149" href="#L149">149</a> Collection<Callable<T>> workItems = associateWithSubject(tasks); |
| <a class="jxr_linenumber" name="L150" href="#L150">150</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.invokeAny(workItems); |
| <a class="jxr_linenumber" name="L151" href="#L151">151</a> } |
| <a class="jxr_linenumber" name="L152" href="#L152">152</a> |
| <a class="jxr_linenumber" name="L153" href="#L153">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 class="jxr_linenumber" name="L154" href="#L154">154</a> <strong class="jxr_keyword">throws</strong> InterruptedException, ExecutionException, TimeoutException { |
| <a class="jxr_linenumber" name="L155" href="#L155">155</a> Collection<Callable<T>> workItems = associateWithSubject(tasks); |
| <a class="jxr_linenumber" name="L156" href="#L156">156</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.targetExecutorService.invokeAny(workItems, timeout, unit); |
| <a class="jxr_linenumber" name="L157" href="#L157">157</a> } |
| <a class="jxr_linenumber" name="L158" href="#L158">158</a> } |
| </pre> |
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