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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 or more<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache license, Version 2.0<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * the License. You may obtain a copy of the License at<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> *<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> *<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * See the license for the specific language governing permissions and<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * limitations under the license.<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> */<a name="line.16"></a> |
| <span class="sourceLineNo">017</span><a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.logging.log4j.core.osgi;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.util.Hashtable;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.concurrent.atomic.AtomicReference;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span><a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.logging.log4j.LogManager;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.logging.log4j.Logger;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.logging.log4j.core.config.plugins.util.PluginRegistry;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.logging.log4j.core.impl.Log4jProvider;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.logging.log4j.core.util.Constants;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.logging.log4j.spi.Provider;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.logging.log4j.status.StatusLogger;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.logging.log4j.util.PropertiesUtil;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.osgi.framework.Bundle;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.osgi.framework.BundleActivator;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.osgi.framework.BundleContext;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.osgi.framework.BundleEvent;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.osgi.framework.ServiceRegistration;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.osgi.framework.SynchronousBundleListener;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.osgi.framework.wiring.BundleWiring;<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> * OSGi BundleActivator.<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> */<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>public final class Activator implements BundleActivator, SynchronousBundleListener {<a name="line.42"></a> |
| <span class="sourceLineNo">043</span><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> private static final Logger LOGGER = StatusLogger.getLogger();<a name="line.44"></a> |
| <span class="sourceLineNo">045</span><a name="line.45"></a> |
| <span class="sourceLineNo">046</span> private final AtomicReference<BundleContext> contextRef = new AtomicReference<>();<a name="line.46"></a> |
| <span class="sourceLineNo">047</span><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> ServiceRegistration provideRegistration = null;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span><a name="line.49"></a> |
| <span class="sourceLineNo">050</span> @Override<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> public void start(final BundleContext context) throws Exception {<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> final Provider provider = new Log4jProvider();<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> final Hashtable<String, String> props = new Hashtable<>();<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> props.put("APIVersion", "2.60");<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> provideRegistration = context.registerService(Provider.class.getName(), provider, props);<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> // allow the user to override the default ContextSelector (e.g., by using BasicContextSelector for a global cfg)<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> if (PropertiesUtil.getProperties().getStringProperty(Constants.LOG4J_CONTEXT_SELECTOR) == null) {<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> System.setProperty(Constants.LOG4J_CONTEXT_SELECTOR, BundleContextSelector.class.getName());<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> }<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> if (this.contextRef.compareAndSet(null, context)) {<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> context.addBundleListener(this);<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> // done after the BundleListener as to not miss any new bundle installs in the interim<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> scanInstalledBundlesForPlugins(context);<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> }<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> }<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> private static void scanInstalledBundlesForPlugins(final BundleContext context) {<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> final Bundle[] bundles = context.getBundles();<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> for (final Bundle bundle : bundles) {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> // TODO: bundle state can change during this<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> scanBundleForPlugins(bundle);<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> }<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> private static void scanBundleForPlugins(final Bundle bundle) {<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> final long bundleId = bundle.getBundleId();<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> // LOG4J2-920: don't scan system bundle for plugins<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> if (bundle.getState() == Bundle.ACTIVE && bundleId != 0) {<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> LOGGER.trace("Scanning bundle [{}, id=%d] for plugins.", bundle.getSymbolicName(), bundleId);<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> PluginRegistry.getInstance().loadFromBundle(bundleId,<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> bundle.adapt(BundleWiring.class).getClassLoader());<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> }<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> }<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> private static void stopBundlePlugins(final Bundle bundle) {<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> LOGGER.trace("Stopping bundle [{}] plugins.", bundle.getSymbolicName());<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> // TODO: plugin lifecycle code<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> PluginRegistry.getInstance().clearBundlePlugins(bundle.getBundleId());<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> }<a name="line.89"></a> |
| <span class="sourceLineNo">090</span><a name="line.90"></a> |
| <span class="sourceLineNo">091</span> @Override<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> public void stop(final BundleContext context) throws Exception {<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> provideRegistration.unregister();<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> this.contextRef.compareAndSet(context, null);<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> LogManager.shutdown();<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> @Override<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> public void bundleChanged(final BundleEvent event) {<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> switch (event.getType()) {<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> // FIXME: STARTING instead of STARTED?<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> case BundleEvent.STARTED:<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> scanBundleForPlugins(event.getBundle());<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> break;<a name="line.104"></a> |
| <span class="sourceLineNo">105</span><a name="line.105"></a> |
| <span class="sourceLineNo">106</span> case BundleEvent.STOPPING:<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> stopBundlePlugins(event.getBundle());<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> break;<a name="line.108"></a> |
| <span class="sourceLineNo">109</span><a name="line.109"></a> |
| <span class="sourceLineNo">110</span> default:<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> break;<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> }<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> }<a name="line.113"></a> |
| <span class="sourceLineNo">114</span>}<a name="line.114"></a> |
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| </pre> |
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