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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.pref.enforce;<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.internal.LifecycleQueueService;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.felix.ipojo.extender.internal.queue.pref.Preference;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.felix.ipojo.extender.internal.queue.pref.PreferenceSelection;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.felix.ipojo.extender.queue.Callback;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.felix.ipojo.extender.queue.Job;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.felix.ipojo.util.Log;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.felix.ipojo.util.Logger;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.osgi.framework.Bundle;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.osgi.framework.BundleReference;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span><a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.concurrent.Callable;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.concurrent.Future;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span><a name="line.34"></a> |
| <span class="sourceLineNo">035</span>/**<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * A queue service implementation enforcing the processing preference choice for the bundle.<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> */<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>public class EnforcedQueueService extends ForwardingQueueService {<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> /**<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * The preference strategy selection.<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> */<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> private final PreferenceSelection m_strategy;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span><a name="line.44"></a> |
| <span class="sourceLineNo">045</span> /**<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * The lifecycle queue service on which the job are delegated.<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> */<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> private final LifecycleQueueService m_queueService;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span><a name="line.49"></a> |
| <span class="sourceLineNo">050</span> /**<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * The preference.<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> */<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> private final Preference m_enforced;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span><a name="line.54"></a> |
| <span class="sourceLineNo">055</span> /**<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * The logger.<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> */<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> private final Log m_logger;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> /**<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * Constructor.<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> *<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * @param strategy the strategy<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * @param queueService the queue service<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * @param enforced the preference we want to enforce<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * @param logger the logger<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> */<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> public EnforcedQueueService(PreferenceSelection strategy, LifecycleQueueService queueService, Preference enforced, Log logger) {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> m_strategy = strategy;<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> m_queueService = queueService;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> m_enforced = enforced;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> m_logger = logger;<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> @Override<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> protected LifecycleQueueService delegate() {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> return m_queueService;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> }<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> @Override<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> public <T> Future<T> submit(Job<T> callable, Callback<T> callback, String description) {<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> checkBundlePreference(callable);<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> return super.submit(callable, callback, description);<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> }<a name="line.84"></a> |
| <span class="sourceLineNo">085</span><a name="line.85"></a> |
| <span class="sourceLineNo">086</span> @Override<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> public <T> Future<T> submit(Job<T> callable, String description) {<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> checkBundlePreference(callable);<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> return super.submit(callable, description);<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> }<a name="line.90"></a> |
| <span class="sourceLineNo">091</span><a name="line.91"></a> |
| <span class="sourceLineNo">092</span> @Override<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> public <T> Future<T> submit(Job<T> callable) {<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> checkBundlePreference(callable);<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> return super.submit(callable);<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> }<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> * Checks the bundle processing preference and compare with the enforced preference.<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> *<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> * @param callable the callable<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> */<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> private void checkBundlePreference(Callable<?> callable) {<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> if (callable instanceof BundleReference) {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> Bundle bundle = ((BundleReference) callable).getBundle();<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> Preference preference = m_strategy.select(bundle);<a name="line.106"></a> |
| <span class="sourceLineNo">107</span><a name="line.107"></a> |
| <span class="sourceLineNo">108</span> if (!isCompatible(preference)) {<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> // Log a warning, Bundle asked for a synchronous processing,<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> // but we will enforce parametrised processing<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> String message = String.format(<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> "Enforcing %s mode for Bundle %s/%s [%d] (asking for %s)",<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> m_enforced.name(),<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> bundle.getSymbolicName(),<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> bundle.getVersion(),<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> bundle.getBundleId(),<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> preference<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> );<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> m_logger.log(Logger.WARNING, message);<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> }<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> }<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> }<a name="line.122"></a> |
| <span class="sourceLineNo">123</span><a name="line.123"></a> |
| <span class="sourceLineNo">124</span> /**<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> * @param preference the preference.<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> * @return is the given preference compatible with the enforced one.<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> */<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> private boolean isCompatible(Preference preference) {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> return ((preference == m_enforced) || (preference == Preference.DEFAULT));<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> }<a name="line.130"></a> |
| <span class="sourceLineNo">131</span>}<a name="line.131"></a> |
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| </pre> |
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