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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
<span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a>
<span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a>
<span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a>
<span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a>
<span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a>
<span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a>
<span class="sourceLineNo">018</span> */<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>package org.apache.felix.ipojo.extender.internal.queue;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.apache.felix.ipojo.extender.queue.Callback;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.apache.felix.ipojo.extender.queue.Job;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.apache.felix.ipojo.extender.queue.JobInfo;<a name="line.24"></a>
<span class="sourceLineNo">025</span><a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.concurrent.Callable;<a name="line.26"></a>
<span class="sourceLineNo">027</span><a name="line.27"></a>
<span class="sourceLineNo">028</span>/**<a name="line.28"></a>
<span class="sourceLineNo">029</span> * A callable computing job statistics. The job is given as another callable.<a name="line.29"></a>
<span class="sourceLineNo">030</span> * The statistics are global, so must be used carefully.<a name="line.30"></a>
<span class="sourceLineNo">031</span> */<a name="line.31"></a>
<span class="sourceLineNo">032</span>public class JobInfoCallable&lt;T&gt; implements Callable&lt;T&gt;, JobInfo {<a name="line.32"></a>
<span class="sourceLineNo">033</span><a name="line.33"></a>
<span class="sourceLineNo">034</span> /**<a name="line.34"></a>
<span class="sourceLineNo">035</span> * Notifier helper for {@link org.apache.felix.ipojo.extender.queue.QueueListener}.<a name="line.35"></a>
<span class="sourceLineNo">036</span> */<a name="line.36"></a>
<span class="sourceLineNo">037</span> private final QueueNotifier m_queueNotifier;<a name="line.37"></a>
<span class="sourceLineNo">038</span><a name="line.38"></a>
<span class="sourceLineNo">039</span> /**<a name="line.39"></a>
<span class="sourceLineNo">040</span> * The statistic object.<a name="line.40"></a>
<span class="sourceLineNo">041</span> */<a name="line.41"></a>
<span class="sourceLineNo">042</span> private final Statistic m_statistic;<a name="line.42"></a>
<span class="sourceLineNo">043</span><a name="line.43"></a>
<span class="sourceLineNo">044</span> /**<a name="line.44"></a>
<span class="sourceLineNo">045</span> * The genuine job.<a name="line.45"></a>
<span class="sourceLineNo">046</span> */<a name="line.46"></a>
<span class="sourceLineNo">047</span> private final Job&lt;T&gt; m_delegate;<a name="line.47"></a>
<span class="sourceLineNo">048</span><a name="line.48"></a>
<span class="sourceLineNo">049</span> /**<a name="line.49"></a>
<span class="sourceLineNo">050</span> * A callback notified when the job is processed.<a name="line.50"></a>
<span class="sourceLineNo">051</span> */<a name="line.51"></a>
<span class="sourceLineNo">052</span> private final Callback&lt;T&gt; m_callback;<a name="line.52"></a>
<span class="sourceLineNo">053</span><a name="line.53"></a>
<span class="sourceLineNo">054</span> /**<a name="line.54"></a>
<span class="sourceLineNo">055</span> * The job description.<a name="line.55"></a>
<span class="sourceLineNo">056</span> */<a name="line.56"></a>
<span class="sourceLineNo">057</span> private final String m_description;<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span> /**<a name="line.59"></a>
<span class="sourceLineNo">060</span> * The date (in milli) when this object is created.<a name="line.60"></a>
<span class="sourceLineNo">061</span> */<a name="line.61"></a>
<span class="sourceLineNo">062</span> private long enlistmentTime = System.currentTimeMillis();<a name="line.62"></a>
<span class="sourceLineNo">063</span><a name="line.63"></a>
<span class="sourceLineNo">064</span> /**<a name="line.64"></a>
<span class="sourceLineNo">065</span> * The date when the job processing started.<a name="line.65"></a>
<span class="sourceLineNo">066</span> */<a name="line.66"></a>
<span class="sourceLineNo">067</span> private long startTime = -1;<a name="line.67"></a>
<span class="sourceLineNo">068</span><a name="line.68"></a>
<span class="sourceLineNo">069</span> /**<a name="line.69"></a>
<span class="sourceLineNo">070</span> * The date when the job processing is completed.<a name="line.70"></a>
<span class="sourceLineNo">071</span> */<a name="line.71"></a>
<span class="sourceLineNo">072</span> private long endTime = -1;<a name="line.72"></a>
<span class="sourceLineNo">073</span><a name="line.73"></a>
<span class="sourceLineNo">074</span> /**<a name="line.74"></a>
<span class="sourceLineNo">075</span> * Creates the job info callable.<a name="line.75"></a>
<span class="sourceLineNo">076</span> *<a name="line.76"></a>
<span class="sourceLineNo">077</span> * @param queueNotifier notifier for QueueListeners<a name="line.77"></a>
<span class="sourceLineNo">078</span> * @param statistic the statistics that will be populated<a name="line.78"></a>
<span class="sourceLineNo">079</span> * @param delegate the real job<a name="line.79"></a>
<span class="sourceLineNo">080</span> * @param callback the callback notified when the job is completed<a name="line.80"></a>
<span class="sourceLineNo">081</span> * @param description the job description<a name="line.81"></a>
<span class="sourceLineNo">082</span> */<a name="line.82"></a>
<span class="sourceLineNo">083</span> public JobInfoCallable(QueueNotifier queueNotifier,<a name="line.83"></a>
<span class="sourceLineNo">084</span> Statistic statistic,<a name="line.84"></a>
<span class="sourceLineNo">085</span> Job&lt;T&gt; delegate,<a name="line.85"></a>
<span class="sourceLineNo">086</span> Callback&lt;T&gt; callback,<a name="line.86"></a>
<span class="sourceLineNo">087</span> String description) {<a name="line.87"></a>
<span class="sourceLineNo">088</span> m_queueNotifier = queueNotifier;<a name="line.88"></a>
<span class="sourceLineNo">089</span> m_statistic = statistic;<a name="line.89"></a>
<span class="sourceLineNo">090</span> m_delegate = delegate;<a name="line.90"></a>
<span class="sourceLineNo">091</span> m_callback = callback;<a name="line.91"></a>
<span class="sourceLineNo">092</span> m_description = description;<a name="line.92"></a>
<span class="sourceLineNo">093</span> m_statistic.getWaiters().add(this);<a name="line.93"></a>
<span class="sourceLineNo">094</span><a name="line.94"></a>
<span class="sourceLineNo">095</span> // Assume that we will be enlisted in the next few cycles<a name="line.95"></a>
<span class="sourceLineNo">096</span> m_queueNotifier.fireEnlistedJobInfo(this);<a name="line.96"></a>
<span class="sourceLineNo">097</span> }<a name="line.97"></a>
<span class="sourceLineNo">098</span><a name="line.98"></a>
<span class="sourceLineNo">099</span> /**<a name="line.99"></a>
<span class="sourceLineNo">100</span> * Executes the job.<a name="line.100"></a>
<span class="sourceLineNo">101</span> * This method updates the statistics.<a name="line.101"></a>
<span class="sourceLineNo">102</span> *<a name="line.102"></a>
<span class="sourceLineNo">103</span> * @return the job result<a name="line.103"></a>
<span class="sourceLineNo">104</span> * @throws Exception the job execution failed<a name="line.104"></a>
<span class="sourceLineNo">105</span> */<a name="line.105"></a>
<span class="sourceLineNo">106</span> public T call() throws Exception {<a name="line.106"></a>
<span class="sourceLineNo">107</span> m_statistic.getWaiters().remove(this);<a name="line.107"></a>
<span class="sourceLineNo">108</span> startTime = System.currentTimeMillis();<a name="line.108"></a>
<span class="sourceLineNo">109</span> m_statistic.getCurrentsCounter().incrementAndGet();<a name="line.109"></a>
<span class="sourceLineNo">110</span> T result = null;<a name="line.110"></a>
<span class="sourceLineNo">111</span> Exception exception = null;<a name="line.111"></a>
<span class="sourceLineNo">112</span> try {<a name="line.112"></a>
<span class="sourceLineNo">113</span> m_queueNotifier.fireStartedJobInfo(this);<a name="line.113"></a>
<span class="sourceLineNo">114</span> result = m_delegate.call();<a name="line.114"></a>
<span class="sourceLineNo">115</span> endTime = System.currentTimeMillis();<a name="line.115"></a>
<span class="sourceLineNo">116</span> return result;<a name="line.116"></a>
<span class="sourceLineNo">117</span> } catch (Exception e) {<a name="line.117"></a>
<span class="sourceLineNo">118</span> endTime = System.currentTimeMillis();<a name="line.118"></a>
<span class="sourceLineNo">119</span> m_queueNotifier.fireFailedJobInfo(this, e);<a name="line.119"></a>
<span class="sourceLineNo">120</span> if (m_callback != null) {<a name="line.120"></a>
<span class="sourceLineNo">121</span> m_callback.error(this, e);<a name="line.121"></a>
<span class="sourceLineNo">122</span> }<a name="line.122"></a>
<span class="sourceLineNo">123</span> exception = e;<a name="line.123"></a>
<span class="sourceLineNo">124</span> throw e;<a name="line.124"></a>
<span class="sourceLineNo">125</span> } finally {<a name="line.125"></a>
<span class="sourceLineNo">126</span> m_statistic.getCurrentsCounter().decrementAndGet();<a name="line.126"></a>
<span class="sourceLineNo">127</span> m_statistic.getFinishedCounter().incrementAndGet();<a name="line.127"></a>
<span class="sourceLineNo">128</span><a name="line.128"></a>
<span class="sourceLineNo">129</span> // Only exec success callbacks when no error occurred<a name="line.129"></a>
<span class="sourceLineNo">130</span> if (exception == null) {<a name="line.130"></a>
<span class="sourceLineNo">131</span> m_queueNotifier.fireExecutedJobInfo(this, result);<a name="line.131"></a>
<span class="sourceLineNo">132</span> if (m_callback != null) {<a name="line.132"></a>
<span class="sourceLineNo">133</span> m_callback.success(this, result);<a name="line.133"></a>
<span class="sourceLineNo">134</span> }<a name="line.134"></a>
<span class="sourceLineNo">135</span> }<a name="line.135"></a>
<span class="sourceLineNo">136</span> }<a name="line.136"></a>
<span class="sourceLineNo">137</span> }<a name="line.137"></a>
<span class="sourceLineNo">138</span><a name="line.138"></a>
<span class="sourceLineNo">139</span> /**<a name="line.139"></a>
<span class="sourceLineNo">140</span> * @return the enlistment date.<a name="line.140"></a>
<span class="sourceLineNo">141</span> */<a name="line.141"></a>
<span class="sourceLineNo">142</span> public long getEnlistmentTime() {<a name="line.142"></a>
<span class="sourceLineNo">143</span> return enlistmentTime;<a name="line.143"></a>
<span class="sourceLineNo">144</span> }<a name="line.144"></a>
<span class="sourceLineNo">145</span><a name="line.145"></a>
<span class="sourceLineNo">146</span> /**<a name="line.146"></a>
<span class="sourceLineNo">147</span> * @return the job start date.<a name="line.147"></a>
<span class="sourceLineNo">148</span> */<a name="line.148"></a>
<span class="sourceLineNo">149</span> public long getStartTime() {<a name="line.149"></a>
<span class="sourceLineNo">150</span> return startTime;<a name="line.150"></a>
<span class="sourceLineNo">151</span> }<a name="line.151"></a>
<span class="sourceLineNo">152</span><a name="line.152"></a>
<span class="sourceLineNo">153</span> /**<a name="line.153"></a>
<span class="sourceLineNo">154</span> * @return the job completion date.<a name="line.154"></a>
<span class="sourceLineNo">155</span> */<a name="line.155"></a>
<span class="sourceLineNo">156</span> public long getEndTime() {<a name="line.156"></a>
<span class="sourceLineNo">157</span> return endTime;<a name="line.157"></a>
<span class="sourceLineNo">158</span> }<a name="line.158"></a>
<span class="sourceLineNo">159</span><a name="line.159"></a>
<span class="sourceLineNo">160</span> /**<a name="line.160"></a>
<span class="sourceLineNo">161</span> * Computes the time spent in the waiting queue<a name="line.161"></a>
<span class="sourceLineNo">162</span> *<a name="line.162"></a>
<span class="sourceLineNo">163</span> * @return the waited time, if the job is still waiting, gets the current waited time<a name="line.163"></a>
<span class="sourceLineNo">164</span> */<a name="line.164"></a>
<span class="sourceLineNo">165</span> public long getWaitDuration() {<a name="line.165"></a>
<span class="sourceLineNo">166</span> long end = startTime;<a name="line.166"></a>
<span class="sourceLineNo">167</span> if (end == -1) {<a name="line.167"></a>
<span class="sourceLineNo">168</span> // Not yet started<a name="line.168"></a>
<span class="sourceLineNo">169</span> // Still waiting<a name="line.169"></a>
<span class="sourceLineNo">170</span> end = System.currentTimeMillis();<a name="line.170"></a>
<span class="sourceLineNo">171</span> }<a name="line.171"></a>
<span class="sourceLineNo">172</span> return end - enlistmentTime;<a name="line.172"></a>
<span class="sourceLineNo">173</span> }<a name="line.173"></a>
<span class="sourceLineNo">174</span><a name="line.174"></a>
<span class="sourceLineNo">175</span> /**<a name="line.175"></a>
<span class="sourceLineNo">176</span> * Computes the time spent to execute the job (this does not include the waiting).<a name="line.176"></a>
<span class="sourceLineNo">177</span> * If the job is not executed yet, or is still executing, {@literal -1} is returned<a name="line.177"></a>
<span class="sourceLineNo">178</span> *<a name="line.178"></a>
<span class="sourceLineNo">179</span> * @return the execution duration, or {@literal -1}.<a name="line.179"></a>
<span class="sourceLineNo">180</span> */<a name="line.180"></a>
<span class="sourceLineNo">181</span> public long getExecutionDuration() {<a name="line.181"></a>
<span class="sourceLineNo">182</span> if ((startTime == -1) || (endTime == -1)) {<a name="line.182"></a>
<span class="sourceLineNo">183</span> return -1;<a name="line.183"></a>
<span class="sourceLineNo">184</span> }<a name="line.184"></a>
<span class="sourceLineNo">185</span> return endTime - startTime;<a name="line.185"></a>
<span class="sourceLineNo">186</span> }<a name="line.186"></a>
<span class="sourceLineNo">187</span><a name="line.187"></a>
<span class="sourceLineNo">188</span> /**<a name="line.188"></a>
<span class="sourceLineNo">189</span> * @return the job description<a name="line.189"></a>
<span class="sourceLineNo">190</span> */<a name="line.190"></a>
<span class="sourceLineNo">191</span> public String getDescription() {<a name="line.191"></a>
<span class="sourceLineNo">192</span> return m_description;<a name="line.192"></a>
<span class="sourceLineNo">193</span> }<a name="line.193"></a>
<span class="sourceLineNo">194</span><a name="line.194"></a>
<span class="sourceLineNo">195</span> public String getJobType() {<a name="line.195"></a>
<span class="sourceLineNo">196</span> return m_delegate.getJobType();<a name="line.196"></a>
<span class="sourceLineNo">197</span> }<a name="line.197"></a>
<span class="sourceLineNo">198</span>}<a name="line.198"></a>
</pre>
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