Modified: websites/production/commons/content/proper/commons-daemon/apidocs/src-html/org/apache/commons/daemon/support/DaemonLoader.html ============================================================================== --- websites/production/commons/content/proper/commons-daemon/apidocs/src-html/org/apache/commons/daemon/support/DaemonLoader.html (original) +++ websites/production/commons/content/proper/commons-daemon/apidocs/src-html/org/apache/commons/daemon/support/DaemonLoader.html Tue Mar 15 08:35:38 2022 @@ -1,433 +1,430 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<!DOCTYPE HTML> <html lang="en"> <head> <title>Source code</title> <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> </head> <body> +<main role="main"> <div class="sourceContainer"> -<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.commons.daemon.support;<a name="line.18"></a> -<span class="sourceLineNo">019</span><a name="line.19"></a> -<span class="sourceLineNo">020</span>import org.apache.commons.daemon.DaemonContext;<a name="line.20"></a> -<span class="sourceLineNo">021</span>import org.apache.commons.daemon.DaemonController;<a name="line.21"></a> -<span class="sourceLineNo">022</span>import org.apache.commons.daemon.DaemonInitException;<a name="line.22"></a> -<span class="sourceLineNo">023</span><a name="line.23"></a> -<span class="sourceLineNo">024</span>import java.lang.reflect.InvocationTargetException;<a name="line.24"></a> -<span class="sourceLineNo">025</span>import java.lang.reflect.Method;<a name="line.25"></a> -<span class="sourceLineNo">026</span><a name="line.26"></a> -<span class="sourceLineNo">027</span>/**<a name="line.27"></a> -<span class="sourceLineNo">028</span> * Used by jsvc for Daemon management.<a name="line.28"></a> -<span class="sourceLineNo">029</span> */<a name="line.29"></a> -<span class="sourceLineNo">030</span>public final class DaemonLoader<a name="line.30"></a> -<span class="sourceLineNo">031</span>{<a name="line.31"></a> -<span class="sourceLineNo">032</span><a name="line.32"></a> -<span class="sourceLineNo">033</span> // N.B. These static mutable variables need to be accessed using synch.<a name="line.33"></a> -<span class="sourceLineNo">034</span> private static Controller controller = null; //@GuardedBy("this")<a name="line.34"></a> -<span class="sourceLineNo">035</span> private static Object daemon = null; //@GuardedBy("this")<a name="line.35"></a> -<span class="sourceLineNo">036</span> /* Methods to call */<a name="line.36"></a> -<span class="sourceLineNo">037</span> private static Method init = null; //@GuardedBy("this")<a name="line.37"></a> -<span class="sourceLineNo">038</span> private static Method start = null; //@GuardedBy("this")<a name="line.38"></a> -<span class="sourceLineNo">039</span> private static Method stop = null; //@GuardedBy("this")<a name="line.39"></a> -<span class="sourceLineNo">040</span> private static Method destroy = null; //@GuardedBy("this")<a name="line.40"></a> -<span class="sourceLineNo">041</span> private static Method signal = null; //@GuardedBy("this")<a name="line.41"></a> -<span class="sourceLineNo">042</span><a name="line.42"></a> -<span class="sourceLineNo">043</span> public static void version()<a name="line.43"></a> -<span class="sourceLineNo">044</span> {<a name="line.44"></a> -<span class="sourceLineNo">045</span> System.err.println("java version \"" +<a name="line.45"></a> -<span class="sourceLineNo">046</span> System.getProperty("java.version") + "\"");<a name="line.46"></a> -<span class="sourceLineNo">047</span> System.err.println(System.getProperty("java.runtime.name") +<a name="line.47"></a> -<span class="sourceLineNo">048</span> " (build " +<a name="line.48"></a> -<span class="sourceLineNo">049</span> System.getProperty("java.runtime.version") + ")");<a name="line.49"></a> -<span class="sourceLineNo">050</span> System.err.println(System.getProperty("java.vm.name") +<a name="line.50"></a> -<span class="sourceLineNo">051</span> " (build " +<a name="line.51"></a> -<span class="sourceLineNo">052</span> System.getProperty("java.vm.version") +<a name="line.52"></a> -<span class="sourceLineNo">053</span> ", " + System.getProperty("java.vm.info") + ")");<a name="line.53"></a> -<span class="sourceLineNo">054</span> System.err.println("commons daemon version \"" +<a name="line.54"></a> -<span class="sourceLineNo">055</span> System.getProperty("commons.daemon.version") + "\"");<a name="line.55"></a> -<span class="sourceLineNo">056</span> System.err.println("commons daemon process (id: " +<a name="line.56"></a> -<span class="sourceLineNo">057</span> System.getProperty("commons.daemon.process.id") +<a name="line.57"></a> -<span class="sourceLineNo">058</span> ", parent: " +<a name="line.58"></a> -<span class="sourceLineNo">059</span> System.getProperty("commons.daemon.process.parent") + ")");<a name="line.59"></a> -<span class="sourceLineNo">060</span> }<a name="line.60"></a> -<span class="sourceLineNo">061</span><a name="line.61"></a> -<span class="sourceLineNo">062</span> public static boolean check(final String cn)<a name="line.62"></a> -<span class="sourceLineNo">063</span> {<a name="line.63"></a> -<span class="sourceLineNo">064</span> try {<a name="line.64"></a> -<span class="sourceLineNo">065</span> /* Check the class name */<a name="line.65"></a> -<span class="sourceLineNo">066</span> if (cn == null) {<a name="line.66"></a> -<span class="sourceLineNo">067</span> throw new NullPointerException("Null class name specified");<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> /* Get the ClassLoader loading this class */<a name="line.70"></a> -<span class="sourceLineNo">071</span> final ClassLoader cl = DaemonLoader.class.getClassLoader();<a name="line.71"></a> -<span class="sourceLineNo">072</span> if (cl == null) {<a name="line.72"></a> -<span class="sourceLineNo">073</span> System.err.println("Cannot retrieve ClassLoader instance");<a name="line.73"></a> -<span class="sourceLineNo">074</span> return false;<a name="line.74"></a> -<span class="sourceLineNo">075</span> }<a name="line.75"></a> -<span class="sourceLineNo">076</span><a name="line.76"></a> -<span class="sourceLineNo">077</span> /* Find the required class */<a name="line.77"></a> -<span class="sourceLineNo">078</span> final Class<?> c = cl.loadClass(cn);<a name="line.78"></a> -<span class="sourceLineNo">079</span><a name="line.79"></a> -<span class="sourceLineNo">080</span> /* This should _never_ happen, but doublechecking doesn't harm */<a name="line.80"></a> -<span class="sourceLineNo">081</span> if (c == null) {<a name="line.81"></a> -<span class="sourceLineNo">082</span> throw new ClassNotFoundException(cn);<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> /* Create a new instance of the daemon */<a name="line.85"></a> -<span class="sourceLineNo">086</span> c.getConstructor().newInstance();<a name="line.86"></a> -<span class="sourceLineNo">087</span><a name="line.87"></a> -<span class="sourceLineNo">088</span> } catch (final Throwable t) {<a name="line.88"></a> -<span class="sourceLineNo">089</span> /* In case we encounter ANY error, we dump the stack trace and<a name="line.89"></a> -<span class="sourceLineNo">090</span> * return false (load, start and stop won't be called).<a name="line.90"></a> -<span class="sourceLineNo">091</span> */<a name="line.91"></a> -<span class="sourceLineNo">092</span> t.printStackTrace(System.err);<a name="line.92"></a> -<span class="sourceLineNo">093</span> return false;<a name="line.93"></a> -<span class="sourceLineNo">094</span> }<a name="line.94"></a> -<span class="sourceLineNo">095</span> /* The class was loaded and instantiated correctly, we can return<a name="line.95"></a> -<span class="sourceLineNo">096</span> */<a name="line.96"></a> -<span class="sourceLineNo">097</span> return true;<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> public static boolean signal()<a name="line.100"></a> -<span class="sourceLineNo">101</span> {<a name="line.101"></a> -<span class="sourceLineNo">102</span> try {<a name="line.102"></a> -<span class="sourceLineNo">103</span> if (signal != null) {<a name="line.103"></a> -<span class="sourceLineNo">104</span> signal.invoke(daemon);<a name="line.104"></a> -<span class="sourceLineNo">105</span> return true;<a name="line.105"></a> -<span class="sourceLineNo">106</span> }<a name="line.106"></a> -<span class="sourceLineNo">107</span> System.out.println("Daemon doesn't support signaling");<a name="line.107"></a> -<span class="sourceLineNo">108</span> } catch (final Throwable ex) {<a name="line.108"></a> -<span class="sourceLineNo">109</span> System.err.println("Cannot send signal: " + ex);<a name="line.109"></a> -<span class="sourceLineNo">110</span> ex.printStackTrace(System.err);<a name="line.110"></a> -<span class="sourceLineNo">111</span> }<a name="line.111"></a> -<span class="sourceLineNo">112</span> return false;<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> -<span class="sourceLineNo">115</span> public static boolean load(final String className, String args[])<a name="line.115"></a> -<span class="sourceLineNo">116</span> {<a name="line.116"></a> -<span class="sourceLineNo">117</span> try {<a name="line.117"></a> -<span class="sourceLineNo">118</span> /* Check if the underlying library supplied a valid list of<a name="line.118"></a> -<span class="sourceLineNo">119</span> arguments */<a name="line.119"></a> -<span class="sourceLineNo">120</span> if (args == null) {<a name="line.120"></a> -<span class="sourceLineNo">121</span> args = new String[0];<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> /* Check the class name */<a name="line.124"></a> -<span class="sourceLineNo">125</span> if (className == null) {<a name="line.125"></a> -<span class="sourceLineNo">126</span> throw new NullPointerException("Null class name specified");<a name="line.126"></a> -<span class="sourceLineNo">127</span> }<a name="line.127"></a> -<span class="sourceLineNo">128</span><a name="line.128"></a> -<span class="sourceLineNo">129</span> /* Get the ClassLoader loading this class */<a name="line.129"></a> -<span class="sourceLineNo">130</span> final ClassLoader cl = DaemonLoader.class.getClassLoader();<a name="line.130"></a> -<span class="sourceLineNo">131</span> if (cl == null) {<a name="line.131"></a> -<span class="sourceLineNo">132</span> System.err.println("Cannot retrieve ClassLoader instance");<a name="line.132"></a> -<span class="sourceLineNo">133</span> return false;<a name="line.133"></a> -<span class="sourceLineNo">134</span> }<a name="line.134"></a> -<span class="sourceLineNo">135</span> Class<?> c;<a name="line.135"></a> -<span class="sourceLineNo">136</span> if (className.charAt(0) == '@') {<a name="line.136"></a> -<span class="sourceLineNo">137</span> /* Wrap the class with DaemonWrapper<a name="line.137"></a> -<span class="sourceLineNo">138</span> * and modify arguments to include the real class name.<a name="line.138"></a> -<span class="sourceLineNo">139</span> */<a name="line.139"></a> -<span class="sourceLineNo">140</span> c = DaemonWrapper.class;<a name="line.140"></a> -<span class="sourceLineNo">141</span> final String[] a = new String[args.length + 2];<a name="line.141"></a> -<span class="sourceLineNo">142</span> a[0] = "-start";<a name="line.142"></a> -<span class="sourceLineNo">143</span> a[1] = className.substring(1);<a name="line.143"></a> -<span class="sourceLineNo">144</span> System.arraycopy(args, 0, a, 2, args.length);<a name="line.144"></a> -<span class="sourceLineNo">145</span> args = a;<a name="line.145"></a> -<span class="sourceLineNo">146</span> }<a name="line.146"></a> -<span class="sourceLineNo">147</span> else {<a name="line.147"></a> -<span class="sourceLineNo">148</span> c = cl.loadClass(className);<a name="line.148"></a> -<span class="sourceLineNo">149</span> }<a name="line.149"></a> -<span class="sourceLineNo">150</span> /* This should _never_ happen, but double-checking doesn't harm */<a name="line.150"></a> -<span class="sourceLineNo">151</span> if (c == null) {<a name="line.151"></a> -<span class="sourceLineNo">152</span> throw new ClassNotFoundException(className);<a name="line.152"></a> -<span class="sourceLineNo">153</span> }<a name="line.153"></a> -<span class="sourceLineNo">154</span> /* Check interfaces */<a name="line.154"></a> -<span class="sourceLineNo">155</span> boolean isdaemon = false;<a name="line.155"></a> -<span class="sourceLineNo">156</span><a name="line.156"></a> -<span class="sourceLineNo">157</span> try {<a name="line.157"></a> -<span class="sourceLineNo">158</span> final Class<?> dclass = cl.loadClass("org.apache.commons.daemon.Daemon");<a name="line.158"></a> -<span class="sourceLineNo">159</span> isdaemon = dclass.isAssignableFrom(c);<a name="line.159"></a> -<span class="sourceLineNo">160</span> }<a name="line.160"></a> -<span class="sourceLineNo">161</span> catch (final Exception cnfex) {<a name="line.161"></a> -<span class="sourceLineNo">162</span> // Swallow if Daemon not found.<a name="line.162"></a> -<span class="sourceLineNo">163</span> }<a name="line.163"></a> -<span class="sourceLineNo">164</span><a name="line.164"></a> -<span class="sourceLineNo">165</span> /* Check methods */<a name="line.165"></a> -<span class="sourceLineNo">166</span> Class<?>[] myclass = new Class[1];<a name="line.166"></a> -<span class="sourceLineNo">167</span> if (isdaemon) {<a name="line.167"></a> -<span class="sourceLineNo">168</span> myclass[0] = DaemonContext.class;<a name="line.168"></a> -<span class="sourceLineNo">169</span> }<a name="line.169"></a> -<span class="sourceLineNo">170</span> else {<a name="line.170"></a> -<span class="sourceLineNo">171</span> myclass[0] = args.getClass();<a name="line.171"></a> -<span class="sourceLineNo">172</span> }<a name="line.172"></a> -<span class="sourceLineNo">173</span><a name="line.173"></a> -<span class="sourceLineNo">174</span> init = c.getMethod("init", myclass);<a name="line.174"></a> -<span class="sourceLineNo">175</span><a name="line.175"></a> -<span class="sourceLineNo">176</span> myclass = null;<a name="line.176"></a> -<span class="sourceLineNo">177</span> start = c.getMethod("start", myclass);<a name="line.177"></a> -<span class="sourceLineNo">178</span> stop = c.getMethod("stop", myclass);<a name="line.178"></a> -<span class="sourceLineNo">179</span> destroy = c.getMethod("destroy", myclass);<a name="line.179"></a> -<span class="sourceLineNo">180</span><a name="line.180"></a> -<span class="sourceLineNo">181</span> try {<a name="line.181"></a> -<span class="sourceLineNo">182</span> signal = c.getMethod("signal", myclass);<a name="line.182"></a> -<span class="sourceLineNo">183</span> } catch (final NoSuchMethodException e) {<a name="line.183"></a> -<span class="sourceLineNo">184</span> // Signalling will be disabled.<a name="line.184"></a> -<span class="sourceLineNo">185</span> }<a name="line.185"></a> -<span class="sourceLineNo">186</span><a name="line.186"></a> -<span class="sourceLineNo">187</span> /* Create a new instance of the daemon */<a name="line.187"></a> -<span class="sourceLineNo">188</span> daemon = c.getConstructor().newInstance();<a name="line.188"></a> -<span class="sourceLineNo">189</span><a name="line.189"></a> -<span class="sourceLineNo">190</span> if (isdaemon) {<a name="line.190"></a> -<span class="sourceLineNo">191</span> /* Create a new controller instance */<a name="line.191"></a> -<span class="sourceLineNo">192</span> controller = new Controller();<a name="line.192"></a> -<span class="sourceLineNo">193</span><a name="line.193"></a> -<span class="sourceLineNo">194</span> /* Set the availability flag in the controller */<a name="line.194"></a> -<span class="sourceLineNo">195</span> controller.setAvailable(false);<a name="line.195"></a> -<span class="sourceLineNo">196</span><a name="line.196"></a> -<span class="sourceLineNo">197</span> /* Create context */<a name="line.197"></a> -<span class="sourceLineNo">198</span> final Context context = new Context();<a name="line.198"></a> -<span class="sourceLineNo">199</span> context.setArguments(args);<a name="line.199"></a> -<span class="sourceLineNo">200</span> context.setController(controller);<a name="line.200"></a> -<span class="sourceLineNo">201</span><a name="line.201"></a> -<span class="sourceLineNo">202</span> /* Now we want to call the init method in the class */<a name="line.202"></a> -<span class="sourceLineNo">203</span> final Object arg[] = new Object[1];<a name="line.203"></a> -<span class="sourceLineNo">204</span> arg[0] = context;<a name="line.204"></a> -<span class="sourceLineNo">205</span> init.invoke(daemon, arg);<a name="line.205"></a> -<span class="sourceLineNo">206</span> }<a name="line.206"></a> -<span class="sourceLineNo">207</span> else {<a name="line.207"></a> -<span class="sourceLineNo">208</span> final Object arg[] = new Object[1];<a name="line.208"></a> -<span class="sourceLineNo">209</span> arg[0] = args;<a name="line.209"></a> -<span class="sourceLineNo">210</span> init.invoke(daemon, arg);<a name="line.210"></a> -<span class="sourceLineNo">211</span> }<a name="line.211"></a> -<span class="sourceLineNo">212</span><a name="line.212"></a> -<span class="sourceLineNo">213</span> }<a name="line.213"></a> -<span class="sourceLineNo">214</span> catch (final InvocationTargetException e) {<a name="line.214"></a> -<span class="sourceLineNo">215</span> final Throwable thrown = e.getTargetException();<a name="line.215"></a> -<span class="sourceLineNo">216</span> /* DaemonInitExceptions can fail with a nicer message */<a name="line.216"></a> -<span class="sourceLineNo">217</span> if (thrown instanceof DaemonInitException) {<a name="line.217"></a> -<span class="sourceLineNo">218</span> failed(((DaemonInitException) thrown).getMessageWithCause());<a name="line.218"></a> -<span class="sourceLineNo">219</span> }<a name="line.219"></a> -<span class="sourceLineNo">220</span> else {<a name="line.220"></a> -<span class="sourceLineNo">221</span> thrown.printStackTrace(System.err);<a name="line.221"></a> -<span class="sourceLineNo">222</span> }<a name="line.222"></a> -<span class="sourceLineNo">223</span> return false;<a name="line.223"></a> -<span class="sourceLineNo">224</span> }<a name="line.224"></a> -<span class="sourceLineNo">225</span> catch (final Throwable t) {<a name="line.225"></a> -<span class="sourceLineNo">226</span> /* In case we encounter ANY error, we dump the stack trace and<a name="line.226"></a> -<span class="sourceLineNo">227</span> * return false (load, start and stop won't be called).<a name="line.227"></a> -<span class="sourceLineNo">228</span> */<a name="line.228"></a> -<span class="sourceLineNo">229</span> t.printStackTrace(System.err);<a name="line.229"></a> -<span class="sourceLineNo">230</span> return false;<a name="line.230"></a> -<span class="sourceLineNo">231</span> }<a name="line.231"></a> -<span class="sourceLineNo">232</span> /* The class was loaded and instantiated correctly, we can return */<a name="line.232"></a> -<span class="sourceLineNo">233</span> return true;<a name="line.233"></a> -<span class="sourceLineNo">234</span> }<a name="line.234"></a> -<span class="sourceLineNo">235</span><a name="line.235"></a> -<span class="sourceLineNo">236</span> public static boolean start()<a name="line.236"></a> -<span class="sourceLineNo">237</span> {<a name="line.237"></a> -<span class="sourceLineNo">238</span> try {<a name="line.238"></a> -<span class="sourceLineNo">239</span> /* Attempt to start the daemon */<a name="line.239"></a> -<span class="sourceLineNo">240</span> final Object arg[] = null;<a name="line.240"></a> -<span class="sourceLineNo">241</span> start.invoke(daemon, arg);<a name="line.241"></a> -<span class="sourceLineNo">242</span><a name="line.242"></a> -<span class="sourceLineNo">243</span> /* Set the availability flag in the controller */<a name="line.243"></a> -<span class="sourceLineNo">244</span> if (controller != null) {<a name="line.244"></a> -<span class="sourceLineNo">245</span> controller.setAvailable(true);<a name="line.245"></a> -<span class="sourceLineNo">246</span> }<a name="line.246"></a> -<span class="sourceLineNo">247</span><a name="line.247"></a> -<span class="sourceLineNo">248</span> } catch (final Throwable t) {<a name="line.248"></a> -<span class="sourceLineNo">249</span> /* In case we encounter ANY error, we dump the stack trace and<a name="line.249"></a> -<span class="sourceLineNo">250</span> * return false (load, start and stop won't be called).<a name="line.250"></a> -<span class="sourceLineNo">251</span> */<a name="line.251"></a> -<span class="sourceLineNo">252</span> t.printStackTrace(System.err);<a name="line.252"></a> -<span class="sourceLineNo">253</span> return false;<a name="line.253"></a> -<span class="sourceLineNo">254</span> }<a name="line.254"></a> -<span class="sourceLineNo">255</span> return true;<a name="line.255"></a> -<span class="sourceLineNo">256</span> }<a name="line.256"></a> -<span class="sourceLineNo">257</span><a name="line.257"></a> -<span class="sourceLineNo">258</span> public static boolean stop()<a name="line.258"></a> -<span class="sourceLineNo">259</span> {<a name="line.259"></a> -<span class="sourceLineNo">260</span> try {<a name="line.260"></a> -<span class="sourceLineNo">261</span> /* Set the availability flag in the controller */<a name="line.261"></a> -<span class="sourceLineNo">262</span> if (controller != null) {<a name="line.262"></a> -<span class="sourceLineNo">263</span> controller.setAvailable(false);<a name="line.263"></a> -<span class="sourceLineNo">264</span> }<a name="line.264"></a> -<span class="sourceLineNo">265</span><a name="line.265"></a> -<span class="sourceLineNo">266</span> /* Attempt to stop the daemon */<a name="line.266"></a> -<span class="sourceLineNo">267</span> final Object arg[] = null;<a name="line.267"></a> -<span class="sourceLineNo">268</span> stop.invoke(daemon, arg);<a name="line.268"></a> -<span class="sourceLineNo">269</span> }<a name="line.269"></a> -<span class="sourceLineNo">270</span> catch (final Throwable t) {<a name="line.270"></a> -<span class="sourceLineNo">271</span> /* In case we encounter ANY error, we dump the stack trace and<a name="line.271"></a> -<span class="sourceLineNo">272</span> * return false (load, start and stop won't be called).<a name="line.272"></a> -<span class="sourceLineNo">273</span> */<a name="line.273"></a> -<span class="sourceLineNo">274</span> t.printStackTrace(System.err);<a name="line.274"></a> -<span class="sourceLineNo">275</span> return false;<a name="line.275"></a> -<span class="sourceLineNo">276</span> }<a name="line.276"></a> -<span class="sourceLineNo">277</span> return true;<a name="line.277"></a> -<span class="sourceLineNo">278</span> }<a name="line.278"></a> -<span class="sourceLineNo">279</span><a name="line.279"></a> -<span class="sourceLineNo">280</span> public static boolean destroy()<a name="line.280"></a> -<span class="sourceLineNo">281</span> {<a name="line.281"></a> -<span class="sourceLineNo">282</span> try {<a name="line.282"></a> -<span class="sourceLineNo">283</span> /* Attempt to stop the daemon */<a name="line.283"></a> -<span class="sourceLineNo">284</span> final Object arg[] = null;<a name="line.284"></a> -<span class="sourceLineNo">285</span> destroy.invoke(daemon, arg);<a name="line.285"></a> -<span class="sourceLineNo">286</span><a name="line.286"></a> -<span class="sourceLineNo">287</span> daemon = null;<a name="line.287"></a> -<span class="sourceLineNo">288</span> controller = null;<a name="line.288"></a> -<span class="sourceLineNo">289</span> } catch (final Throwable t) {<a name="line.289"></a> -<span class="sourceLineNo">290</span> /* In case we encounter ANY error, we dump the stack trace and<a name="line.290"></a> -<span class="sourceLineNo">291</span> * return false (load, start and stop won't be called).<a name="line.291"></a> -<span class="sourceLineNo">292</span> */<a name="line.292"></a> -<span class="sourceLineNo">293</span> t.printStackTrace(System.err);<a name="line.293"></a> -<span class="sourceLineNo">294</span> return false;<a name="line.294"></a> -<span class="sourceLineNo">295</span> }<a name="line.295"></a> -<span class="sourceLineNo">296</span> return true;<a name="line.296"></a> -<span class="sourceLineNo">297</span> }<a name="line.297"></a> -<span class="sourceLineNo">298</span><a name="line.298"></a> -<span class="sourceLineNo">299</span> private static native void shutdown(boolean reload);<a name="line.299"></a> -<span class="sourceLineNo">300</span> private static native void failed(String message);<a name="line.300"></a> -<span class="sourceLineNo">301</span><a name="line.301"></a> -<span class="sourceLineNo">302</span> public static class Controller<a name="line.302"></a> -<span class="sourceLineNo">303</span> implements DaemonController<a name="line.303"></a> -<span class="sourceLineNo">304</span> {<a name="line.304"></a> -<span class="sourceLineNo">305</span><a name="line.305"></a> -<span class="sourceLineNo">306</span> private boolean available = false;<a name="line.306"></a> -<span class="sourceLineNo">307</span><a name="line.307"></a> -<span class="sourceLineNo">308</span> private Controller()<a name="line.308"></a> -<span class="sourceLineNo">309</span> {<a name="line.309"></a> -<span class="sourceLineNo">310</span> this.setAvailable(false);<a name="line.310"></a> -<span class="sourceLineNo">311</span> }<a name="line.311"></a> -<span class="sourceLineNo">312</span><a name="line.312"></a> -<span class="sourceLineNo">313</span> private boolean isAvailable()<a name="line.313"></a> -<span class="sourceLineNo">314</span> {<a name="line.314"></a> -<span class="sourceLineNo">315</span> synchronized (this) {<a name="line.315"></a> -<span class="sourceLineNo">316</span> return this.available;<a name="line.316"></a> -<span class="sourceLineNo">317</span> }<a name="line.317"></a> -<span class="sourceLineNo">318</span> }<a name="line.318"></a> -<span class="sourceLineNo">319</span><a name="line.319"></a> -<span class="sourceLineNo">320</span> private void setAvailable(final boolean available)<a name="line.320"></a> -<span class="sourceLineNo">321</span> {<a name="line.321"></a> -<span class="sourceLineNo">322</span> synchronized (this) {<a name="line.322"></a> -<span class="sourceLineNo">323</span> this.available = available;<a name="line.323"></a> -<span class="sourceLineNo">324</span> }<a name="line.324"></a> -<span class="sourceLineNo">325</span> }<a name="line.325"></a> -<span class="sourceLineNo">326</span><a name="line.326"></a> -<span class="sourceLineNo">327</span> @Override<a name="line.327"></a> -<span class="sourceLineNo">328</span> public void shutdown()<a name="line.328"></a> -<span class="sourceLineNo">329</span> throws IllegalStateException<a name="line.329"></a> -<span class="sourceLineNo">330</span> {<a name="line.330"></a> -<span class="sourceLineNo">331</span> synchronized (this) {<a name="line.331"></a> -<span class="sourceLineNo">332</span> if (!this.isAvailable()) {<a name="line.332"></a> -<span class="sourceLineNo">333</span> throw new IllegalStateException();<a name="line.333"></a> -<span class="sourceLineNo">334</span> }<a name="line.334"></a> -<span class="sourceLineNo">335</span> this.setAvailable(false);<a name="line.335"></a> -<span class="sourceLineNo">336</span> DaemonLoader.shutdown(false);<a name="line.336"></a> -<span class="sourceLineNo">337</span> }<a name="line.337"></a> -<span class="sourceLineNo">338</span> }<a name="line.338"></a> -<span class="sourceLineNo">339</span><a name="line.339"></a> -<span class="sourceLineNo">340</span> @Override<a name="line.340"></a> -<span class="sourceLineNo">341</span> public void reload()<a name="line.341"></a> -<span class="sourceLineNo">342</span> throws IllegalStateException<a name="line.342"></a> -<span class="sourceLineNo">343</span> {<a name="line.343"></a> -<span class="sourceLineNo">344</span> synchronized (this) {<a name="line.344"></a> -<span class="sourceLineNo">345</span> if (!this.isAvailable()) {<a name="line.345"></a> -<span class="sourceLineNo">346</span> throw new IllegalStateException();<a name="line.346"></a> -<span class="sourceLineNo">347</span> }<a name="line.347"></a> -<span class="sourceLineNo">348</span> this.setAvailable(false);<a name="line.348"></a> -<span class="sourceLineNo">349</span> DaemonLoader.shutdown(true);<a name="line.349"></a> -<span class="sourceLineNo">350</span> }<a name="line.350"></a> -<span class="sourceLineNo">351</span> }<a name="line.351"></a> -<span class="sourceLineNo">352</span><a name="line.352"></a> -<span class="sourceLineNo">353</span> @Override<a name="line.353"></a> -<span class="sourceLineNo">354</span> public void fail()<a name="line.354"></a> -<span class="sourceLineNo">355</span> {<a name="line.355"></a> -<span class="sourceLineNo">356</span> fail(null, null);<a name="line.356"></a> -<span class="sourceLineNo">357</span> }<a name="line.357"></a> -<span class="sourceLineNo">358</span><a name="line.358"></a> -<span class="sourceLineNo">359</span> @Override<a name="line.359"></a> -<span class="sourceLineNo">360</span> public void fail(final String message)<a name="line.360"></a> -<span class="sourceLineNo">361</span> {<a name="line.361"></a> -<span class="sourceLineNo">362</span> fail(message, null);<a name="line.362"></a> -<span class="sourceLineNo">363</span> }<a name="line.363"></a> -<span class="sourceLineNo">364</span><a name="line.364"></a> -<span class="sourceLineNo">365</span> @Override<a name="line.365"></a> -<span class="sourceLineNo">366</span> public void fail(final Exception exception)<a name="line.366"></a> -<span class="sourceLineNo">367</span> {<a name="line.367"></a> -<span class="sourceLineNo">368</span> fail(null, exception);<a name="line.368"></a> -<span class="sourceLineNo">369</span> }<a name="line.369"></a> -<span class="sourceLineNo">370</span><a name="line.370"></a> -<span class="sourceLineNo">371</span> @Override<a name="line.371"></a> -<span class="sourceLineNo">372</span> public void fail(final String message, final Exception exception)<a name="line.372"></a> -<span class="sourceLineNo">373</span> {<a name="line.373"></a> -<span class="sourceLineNo">374</span> synchronized (this) {<a name="line.374"></a> -<span class="sourceLineNo">375</span> this.setAvailable(false);<a name="line.375"></a> -<span class="sourceLineNo">376</span> String msg = message;<a name="line.376"></a> -<span class="sourceLineNo">377</span> if (exception != null) {<a name="line.377"></a> -<span class="sourceLineNo">378</span> if (msg != null) {<a name="line.378"></a> -<span class="sourceLineNo">379</span> msg = msg + ": " + exception.toString();<a name="line.379"></a> -<span class="sourceLineNo">380</span> }<a name="line.380"></a> -<span class="sourceLineNo">381</span> else {<a name="line.381"></a> -<span class="sourceLineNo">382</span> msg = exception.toString();<a name="line.382"></a> -<span class="sourceLineNo">383</span> }<a name="line.383"></a> -<span class="sourceLineNo">384</span> }<a name="line.384"></a> -<span class="sourceLineNo">385</span> DaemonLoader.failed(msg);<a name="line.385"></a> -<span class="sourceLineNo">386</span> }<a name="line.386"></a> -<span class="sourceLineNo">387</span> }<a name="line.387"></a> -<span class="sourceLineNo">388</span><a name="line.388"></a> -<span class="sourceLineNo">389</span> }<a name="line.389"></a> -<span class="sourceLineNo">390</span><a name="line.390"></a> -<span class="sourceLineNo">391</span> public static class Context<a name="line.391"></a> -<span class="sourceLineNo">392</span> implements DaemonContext<a name="line.392"></a> -<span class="sourceLineNo">393</span> {<a name="line.393"></a> -<span class="sourceLineNo">394</span><a name="line.394"></a> -<span class="sourceLineNo">395</span> private DaemonController daemonController = null;<a name="line.395"></a> -<span class="sourceLineNo">396</span><a name="line.396"></a> -<span class="sourceLineNo">397</span> private String[] args = null;<a name="line.397"></a> -<span class="sourceLineNo">398</span><a name="line.398"></a> -<span class="sourceLineNo">399</span> @Override<a name="line.399"></a> -<span class="sourceLineNo">400</span> public DaemonController getController()<a name="line.400"></a> -<span class="sourceLineNo">401</span> {<a name="line.401"></a> -<span class="sourceLineNo">402</span> return daemonController;<a name="line.402"></a> -<span class="sourceLineNo">403</span> }<a name="line.403"></a> -<span class="sourceLineNo">404</span><a name="line.404"></a> -<span class="sourceLineNo">405</span> public void setController(final DaemonController controller)<a name="line.405"></a> -<span class="sourceLineNo">406</span> {<a name="line.406"></a> -<span class="sourceLineNo">407</span> this.daemonController = controller;<a name="line.407"></a> -<span class="sourceLineNo">408</span> }<a name="line.408"></a> -<span class="sourceLineNo">409</span><a name="line.409"></a> -<span class="sourceLineNo">410</span> @Override<a name="line.410"></a> -<span class="sourceLineNo">411</span> public String[] getArguments()<a name="line.411"></a> -<span class="sourceLineNo">412</span> {<a name="line.412"></a> -<span class="sourceLineNo">413</span> return args;<a name="line.413"></a> -<span class="sourceLineNo">414</span> }<a name="line.414"></a> -<span class="sourceLineNo">415</span><a name="line.415"></a> -<span class="sourceLineNo">416</span> public void setArguments(final String[]args)<a name="line.416"></a> -<span class="sourceLineNo">417</span> {<a name="line.417"></a> -<span class="sourceLineNo">418</span> this.args = args;<a name="line.418"></a> -<span class="sourceLineNo">419</span> }<a name="line.419"></a> -<span class="sourceLineNo">420</span><a name="line.420"></a> -<span class="sourceLineNo">421</span> }<a name="line.421"></a> -<span class="sourceLineNo">422</span>}<a name="line.422"></a> +<pre><span class="sourceLineNo">001</span><a id="line.1">/*</a> +<span class="sourceLineNo">002</span><a id="line.2"> * Licensed to the Apache Software Foundation (ASF) under one or more</a> +<span class="sourceLineNo">003</span><a id="line.3"> * contributor license agreements. See the NOTICE file distributed with</a> +<span class="sourceLineNo">004</span><a id="line.4"> * this work for additional information regarding copyright ownership.</a> +<span class="sourceLineNo">005</span><a id="line.5"> * The ASF licenses this file to You under the Apache License, Version 2.0</a> +<span class="sourceLineNo">006</span><a id="line.6"> * (the "License"); you may not use this file except in compliance with</a> +<span class="sourceLineNo">007</span><a id="line.7"> * the License. You may obtain a copy of the License at</a> +<span class="sourceLineNo">008</span><a id="line.8"> *</a> +<span class="sourceLineNo">009</span><a id="line.9"> * http://www.apache.org/licenses/LICENSE-2.0</a> +<span class="sourceLineNo">010</span><a id="line.10"> *</a> +<span class="sourceLineNo">011</span><a id="line.11"> * Unless required by applicable law or agreed to in writing, software</a> +<span class="sourceLineNo">012</span><a id="line.12"> * distributed under the License is distributed on an "AS IS" BASIS,</a> +<span class="sourceLineNo">013</span><a id="line.13"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</a> +<span class="sourceLineNo">014</span><a id="line.14"> * See the License for the specific language governing permissions and</a> +<span class="sourceLineNo">015</span><a id="line.15"> * limitations under the License.</a> +<span class="sourceLineNo">016</span><a id="line.16"> */</a> +<span class="sourceLineNo">017</span><a id="line.17"></a> +<span class="sourceLineNo">018</span><a id="line.18">package org.apache.commons.daemon.support;</a> +<span class="sourceLineNo">019</span><a id="line.19"></a> +<span class="sourceLineNo">020</span><a id="line.20">import org.apache.commons.daemon.DaemonContext;</a> +<span class="sourceLineNo">021</span><a id="line.21">import org.apache.commons.daemon.DaemonController;</a> +<span class="sourceLineNo">022</span><a id="line.22">import org.apache.commons.daemon.DaemonInitException;</a> +<span class="sourceLineNo">023</span><a id="line.23"></a> +<span class="sourceLineNo">024</span><a id="line.24">import java.lang.reflect.InvocationTargetException;</a> +<span class="sourceLineNo">025</span><a id="line.25">import java.lang.reflect.Method;</a> +<span class="sourceLineNo">026</span><a id="line.26"></a> +<span class="sourceLineNo">027</span><a id="line.27">/**</a> +<span class="sourceLineNo">028</span><a id="line.28"> * Used by jsvc for Daemon management.</a> +<span class="sourceLineNo">029</span><a id="line.29"> */</a> +<span class="sourceLineNo">030</span><a id="line.30">public final class DaemonLoader</a> +<span class="sourceLineNo">031</span><a id="line.31">{</a> +<span class="sourceLineNo">032</span><a id="line.32"></a> +<span class="sourceLineNo">033</span><a id="line.33"> // N.B. These static mutable variables need to be accessed using synch.</a> +<span class="sourceLineNo">034</span><a id="line.34"> private static Controller controller; //@GuardedBy("this")</a> +<span class="sourceLineNo">035</span><a id="line.35"> private static Object daemon; //@GuardedBy("this")</a> +<span class="sourceLineNo">036</span><a id="line.36"> /* Methods to call */</a> +<span class="sourceLineNo">037</span><a id="line.37"> private static Method init; //@GuardedBy("this")</a> +<span class="sourceLineNo">038</span><a id="line.38"> private static Method start; //@GuardedBy("this")</a> +<span class="sourceLineNo">039</span><a id="line.39"> private static Method stop; //@GuardedBy("this")</a> +<span class="sourceLineNo">040</span><a id="line.40"> private static Method destroy; //@GuardedBy("this")</a> +<span class="sourceLineNo">041</span><a id="line.41"> private static Method signal; //@GuardedBy("this")</a> +<span class="sourceLineNo">042</span><a id="line.42"></a> +<span class="sourceLineNo">043</span><a id="line.43"> public static void version()</a> +<span class="sourceLineNo">044</span><a id="line.44"> {</a> +<span class="sourceLineNo">045</span><a id="line.45"> System.err.println("java version \"" +</a> +<span class="sourceLineNo">046</span><a id="line.46"> System.getProperty("java.version") + "\"");</a> +<span class="sourceLineNo">047</span><a id="line.47"> System.err.println(System.getProperty("java.runtime.name") +</a> +<span class="sourceLineNo">048</span><a id="line.48"> " (build " +</a> +<span class="sourceLineNo">049</span><a id="line.49"> System.getProperty("java.runtime.version") + ")");</a> +<span class="sourceLineNo">050</span><a id="line.50"> System.err.println(System.getProperty("java.vm.name") +</a> +<span class="sourceLineNo">051</span><a id="line.51"> " (build " +</a> +<span class="sourceLineNo">052</span><a id="line.52"> System.getProperty("java.vm.version") +</a> +<span class="sourceLineNo">053</span><a id="line.53"> ", " + System.getProperty("java.vm.info") + ")");</a> +<span class="sourceLineNo">054</span><a id="line.54"> System.err.println("commons daemon version \"" +</a> +<span class="sourceLineNo">055</span><a id="line.55"> System.getProperty("commons.daemon.version") + "\"");</a> +<span class="sourceLineNo">056</span><a id="line.56"> System.err.println("commons daemon process (id: " +</a> +<span class="sourceLineNo">057</span><a id="line.57"> System.getProperty("commons.daemon.process.id") +</a> +<span class="sourceLineNo">058</span><a id="line.58"> ", parent: " +</a> +<span class="sourceLineNo">059</span><a id="line.59"> System.getProperty("commons.daemon.process.parent") + ")");</a> +<span class="sourceLineNo">060</span><a id="line.60"> }</a> +<span class="sourceLineNo">061</span><a id="line.61"></a> +<span class="sourceLineNo">062</span><a id="line.62"> public static boolean check(final String cn)</a> +<span class="sourceLineNo">063</span><a id="line.63"> {</a> +<span class="sourceLineNo">064</span><a id="line.64"> try {</a> +<span class="sourceLineNo">065</span><a id="line.65"> /* Check the class name */</a> +<span class="sourceLineNo">066</span><a id="line.66"> if (cn == null) {</a> +<span class="sourceLineNo">067</span><a id="line.67"> throw new NullPointerException("Null class name specified");</a> +<span class="sourceLineNo">068</span><a id="line.68"> }</a> +<span class="sourceLineNo">069</span><a id="line.69"></a> +<span class="sourceLineNo">070</span><a id="line.70"> /* Get the ClassLoader loading this class */</a> +<span class="sourceLineNo">071</span><a id="line.71"> final ClassLoader cl = DaemonLoader.class.getClassLoader();</a> +<span class="sourceLineNo">072</span><a id="line.72"> if (cl == null) {</a> +<span class="sourceLineNo">073</span><a id="line.73"> System.err.println("Cannot retrieve ClassLoader instance");</a> +<span class="sourceLineNo">074</span><a id="line.74"> return false;</a> +<span class="sourceLineNo">075</span><a id="line.75"> }</a> +<span class="sourceLineNo">076</span><a id="line.76"></a> +<span class="sourceLineNo">077</span><a id="line.77"> /* Find the required class */</a> +<span class="sourceLineNo">078</span><a id="line.78"> final Class<?> c = cl.loadClass(cn);</a> +<span class="sourceLineNo">079</span><a id="line.79"></a> +<span class="sourceLineNo">080</span><a id="line.80"> /* This should _never_ happen, but double-checking doesn't harm */</a> +<span class="sourceLineNo">081</span><a id="line.81"> if (c == null) {</a> +<span class="sourceLineNo">082</span><a id="line.82"> throw new ClassNotFoundException(cn);</a> +<span class="sourceLineNo">083</span><a id="line.83"> }</a> +<span class="sourceLineNo">084</span><a id="line.84"></a> +<span class="sourceLineNo">085</span><a id="line.85"> /* Create a new instance of the daemon */</a> +<span class="sourceLineNo">086</span><a id="line.86"> c.getConstructor().newInstance();</a> +<span class="sourceLineNo">087</span><a id="line.87"></a> +<span class="sourceLineNo">088</span><a id="line.88"> } catch (final Throwable t) {</a> +<span class="sourceLineNo">089</span><a id="line.89"> /* In case we encounter ANY error, we dump the stack trace and</a> +<span class="sourceLineNo">090</span><a id="line.90"> * return false (load, start and stop won't be called).</a> +<span class="sourceLineNo">091</span><a id="line.91"> */</a> +<span class="sourceLineNo">092</span><a id="line.92"> t.printStackTrace(System.err);</a> +<span class="sourceLineNo">093</span><a id="line.93"> return false;</a> +<span class="sourceLineNo">094</span><a id="line.94"> }</a> +<span class="sourceLineNo">095</span><a id="line.95"> /* The class was loaded and instantiated correctly, we can return</a> +<span class="sourceLineNo">096</span><a id="line.96"> */</a> +<span class="sourceLineNo">097</span><a id="line.97"> return true;</a> +<span class="sourceLineNo">098</span><a id="line.98"> }</a> +<span class="sourceLineNo">099</span><a id="line.99"></a> +<span class="sourceLineNo">100</span><a id="line.100"> public static boolean signal()</a> +<span class="sourceLineNo">101</span><a id="line.101"> {</a> +<span class="sourceLineNo">102</span><a id="line.102"> try {</a> +<span class="sourceLineNo">103</span><a id="line.103"> if (signal != null) {</a> +<span class="sourceLineNo">104</span><a id="line.104"> signal.invoke(daemon);</a> +<span class="sourceLineNo">105</span><a id="line.105"> return true;</a> +<span class="sourceLineNo">106</span><a id="line.106"> }</a> +<span class="sourceLineNo">107</span><a id="line.107"> System.out.println("Daemon doesn't support signaling");</a> +<span class="sourceLineNo">108</span><a id="line.108"> } catch (final Throwable ex) {</a> +<span class="sourceLineNo">109</span><a id="line.109"> System.err.println("Cannot send signal: " + ex);</a> +<span class="sourceLineNo">110</span><a id="line.110"> ex.printStackTrace(System.err);</a> +<span class="sourceLineNo">111</span><a id="line.111"> }</a> +<span class="sourceLineNo">112</span><a id="line.112"> return false;</a> +<span class="sourceLineNo">113</span><a id="line.113"> }</a> +<span class="sourceLineNo">114</span><a id="line.114"></a> +<span class="sourceLineNo">115</span><a id="line.115"> public static boolean load(final String className, String[] args)</a> +<span class="sourceLineNo">116</span><a id="line.116"> {</a> +<span class="sourceLineNo">117</span><a id="line.117"> try {</a> +<span class="sourceLineNo">118</span><a id="line.118"> /* Check if the underlying library supplied a valid list of</a> +<span class="sourceLineNo">119</span><a id="line.119"> arguments */</a> +<span class="sourceLineNo">120</span><a id="line.120"> if (args == null) {</a> +<span class="sourceLineNo">121</span><a id="line.121"> args = new String[0];</a> +<span class="sourceLineNo">122</span><a id="line.122"> }</a> +<span class="sourceLineNo">123</span><a id="line.123"></a> +<span class="sourceLineNo">124</span><a id="line.124"> /* Check the class name */</a> +<span class="sourceLineNo">125</span><a id="line.125"> if (className == null) {</a> +<span class="sourceLineNo">126</span><a id="line.126"> throw new NullPointerException("Null class name specified");</a> +<span class="sourceLineNo">127</span><a id="line.127"> }</a> +<span class="sourceLineNo">128</span><a id="line.128"></a> +<span class="sourceLineNo">129</span><a id="line.129"> /* Get the ClassLoader loading this class */</a> +<span class="sourceLineNo">130</span><a id="line.130"> final ClassLoader cl = DaemonLoader.class.getClassLoader();</a> +<span class="sourceLineNo">131</span><a id="line.131"> if (cl == null) {</a> +<span class="sourceLineNo">132</span><a id="line.132"> System.err.println("Cannot retrieve ClassLoader instance");</a> +<span class="sourceLineNo">133</span><a id="line.133"> return false;</a> +<span class="sourceLineNo">134</span><a id="line.134"> }</a> +<span class="sourceLineNo">135</span><a id="line.135"> final Class<?> c;</a> +<span class="sourceLineNo">136</span><a id="line.136"> if (className.charAt(0) == '@') {</a> +<span class="sourceLineNo">137</span><a id="line.137"> /* Wrap the class with DaemonWrapper</a> +<span class="sourceLineNo">138</span><a id="line.138"> * and modify arguments to include the real class name.</a> +<span class="sourceLineNo">139</span><a id="line.139"> */</a> +<span class="sourceLineNo">140</span><a id="line.140"> c = DaemonWrapper.class;</a> +<span class="sourceLineNo">141</span><a id="line.141"> final String[] a = new String[args.length + 2];</a> +<span class="sourceLineNo">142</span><a id="line.142"> a[0] = "-start";</a> +<span class="sourceLineNo">143</span><a id="line.143"> a[1] = className.substring(1);</a> +<span class="sourceLineNo">144</span><a id="line.144"> System.arraycopy(args, 0, a, 2, args.length);</a> +<span class="sourceLineNo">145</span><a id="line.145"> args = a;</a> +<span class="sourceLineNo">146</span><a id="line.146"> }</a> +<span class="sourceLineNo">147</span><a id="line.147"> else {</a> +<span class="sourceLineNo">148</span><a id="line.148"> c = cl.loadClass(className);</a> +<span class="sourceLineNo">149</span><a id="line.149"> }</a> +<span class="sourceLineNo">150</span><a id="line.150"> /* This should _never_ happen, but double-checking doesn't harm */</a> +<span class="sourceLineNo">151</span><a id="line.151"> if (c == null) {</a> +<span class="sourceLineNo">152</span><a id="line.152"> throw new ClassNotFoundException(className);</a> +<span class="sourceLineNo">153</span><a id="line.153"> }</a> +<span class="sourceLineNo">154</span><a id="line.154"> /* Check interfaces */</a> +<span class="sourceLineNo">155</span><a id="line.155"> boolean isdaemon = false;</a> +<span class="sourceLineNo">156</span><a id="line.156"></a> +<span class="sourceLineNo">157</span><a id="line.157"> try {</a> +<span class="sourceLineNo">158</span><a id="line.158"> final Class<?> dclass = cl.loadClass("org.apache.commons.daemon.Daemon");</a> +<span class="sourceLineNo">159</span><a id="line.159"> isdaemon = dclass.isAssignableFrom(c);</a> +<span class="sourceLineNo">160</span><a id="line.160"> }</a> +<span class="sourceLineNo">161</span><a id="line.161"> catch (final Exception cnfex) {</a> +<span class="sourceLineNo">162</span><a id="line.162"> // Swallow if Daemon not found.</a> +<span class="sourceLineNo">163</span><a id="line.163"> }</a> +<span class="sourceLineNo">164</span><a id="line.164"></a> +<span class="sourceLineNo">165</span><a id="line.165"> /* Check methods */</a> +<span class="sourceLineNo">166</span><a id="line.166"> final Class<?>[] myclass = new Class[1];</a> +<span class="sourceLineNo">167</span><a id="line.167"> if (isdaemon) {</a> +<span class="sourceLineNo">168</span><a id="line.168"> myclass[0] = DaemonContext.class;</a> +<span class="sourceLineNo">169</span><a id="line.169"> }</a> +<span class="sourceLineNo">170</span><a id="line.170"> else {</a> +<span class="sourceLineNo">171</span><a id="line.171"> myclass[0] = args.getClass();</a> +<span class="sourceLineNo">172</span><a id="line.172"> }</a> +<span class="sourceLineNo">173</span><a id="line.173"></a> +<span class="sourceLineNo">174</span><a id="line.174"> init = c.getMethod("init", myclass);</a> +<span class="sourceLineNo">175</span><a id="line.175"></a> +<span class="sourceLineNo">176</span><a id="line.176"> start = c.getMethod("start");</a> +<span class="sourceLineNo">177</span><a id="line.177"> stop = c.getMethod("stop");</a> +<span class="sourceLineNo">178</span><a id="line.178"> destroy = c.getMethod("destroy");</a> +<span class="sourceLineNo">179</span><a id="line.179"></a> +<span class="sourceLineNo">180</span><a id="line.180"> try {</a> +<span class="sourceLineNo">181</span><a id="line.181"> signal = c.getMethod("signal");</a> +<span class="sourceLineNo">182</span><a id="line.182"> } catch (final NoSuchMethodException e) {</a> +<span class="sourceLineNo">183</span><a id="line.183"> // Signalling will be disabled.</a> +<span class="sourceLineNo">184</span><a id="line.184"> }</a> +<span class="sourceLineNo">185</span><a id="line.185"></a> +<span class="sourceLineNo">186</span><a id="line.186"> /* Create a new instance of the daemon */</a> +<span class="sourceLineNo">187</span><a id="line.187"> daemon = c.getConstructor().newInstance();</a> +<span class="sourceLineNo">188</span><a id="line.188"></a> +<span class="sourceLineNo">189</span><a id="line.189"> if (isdaemon) {</a> +<span class="sourceLineNo">190</span><a id="line.190"> /* Create a new controller instance */</a> +<span class="sourceLineNo">191</span><a id="line.191"> controller = new Controller();</a> +<span class="sourceLineNo">192</span><a id="line.192"></a> +<span class="sourceLineNo">193</span><a id="line.193"> /* Set the availability flag in the controller */</a> +<span class="sourceLineNo">194</span><a id="line.194"> controller.setAvailable(false);</a> +<span class="sourceLineNo">195</span><a id="line.195"></a> +<span class="sourceLineNo">196</span><a id="line.196"> /* Create context */</a> +<span class="sourceLineNo">197</span><a id="line.197"> final Context context = new Context();</a> +<span class="sourceLineNo">198</span><a id="line.198"> context.setArguments(args);</a> +<span class="sourceLineNo">199</span><a id="line.199"> context.setController(controller);</a> +<span class="sourceLineNo">200</span><a id="line.200"></a> +<span class="sourceLineNo">201</span><a id="line.201"> /* Now we want to call the init method in the class */</a> +<span class="sourceLineNo">202</span><a id="line.202"> final Object[] arg = new Object[1];</a> +<span class="sourceLineNo">203</span><a id="line.203"> arg[0] = context;</a> +<span class="sourceLineNo">204</span><a id="line.204"> init.invoke(daemon, arg);</a> +<span class="sourceLineNo">205</span><a id="line.205"> }</a> +<span class="sourceLineNo">206</span><a id="line.206"> else {</a> +<span class="sourceLineNo">207</span><a id="line.207"> final Object[] arg = new Object[1];</a> +<span class="sourceLineNo">208</span><a id="line.208"> arg[0] = args;</a> +<span class="sourceLineNo">209</span><a id="line.209"> init.invoke(daemon, arg);</a> +<span class="sourceLineNo">210</span><a id="line.210"> }</a> +<span class="sourceLineNo">211</span><a id="line.211"></a> +<span class="sourceLineNo">212</span><a id="line.212"> }</a> +<span class="sourceLineNo">213</span><a id="line.213"> catch (final InvocationTargetException e) {</a> +<span class="sourceLineNo">214</span><a id="line.214"> final Throwable thrown = e.getTargetException();</a> +<span class="sourceLineNo">215</span><a id="line.215"> /* DaemonInitExceptions can fail with a nicer message */</a> +<span class="sourceLineNo">216</span><a id="line.216"> if (thrown instanceof DaemonInitException) {</a> +<span class="sourceLineNo">217</span><a id="line.217"> failed(((DaemonInitException) thrown).getMessageWithCause());</a> +<span class="sourceLineNo">218</span><a id="line.218"> }</a> +<span class="sourceLineNo">219</span><a id="line.219"> else {</a> +<span class="sourceLineNo">220</span><a id="line.220"> thrown.printStackTrace(System.err);</a> +<span class="sourceLineNo">221</span><a id="line.221"> }</a> +<span class="sourceLineNo">222</span><a id="line.222"> return false;</a> +<span class="sourceLineNo">223</span><a id="line.223"> }</a> +<span class="sourceLineNo">224</span><a id="line.224"> catch (final Throwable t) {</a> +<span class="sourceLineNo">225</span><a id="line.225"> /* In case we encounter ANY error, we dump the stack trace and</a> +<span class="sourceLineNo">226</span><a id="line.226"> * return false (load, start and stop won't be called).</a> +<span class="sourceLineNo">227</span><a id="line.227"> */</a> +<span class="sourceLineNo">228</span><a id="line.228"> t.printStackTrace(System.err);</a> +<span class="sourceLineNo">229</span><a id="line.229"> return false;</a> +<span class="sourceLineNo">230</span><a id="line.230"> }</a> +<span class="sourceLineNo">231</span><a id="line.231"> /* The class was loaded and instantiated correctly, we can return */</a> +<span class="sourceLineNo">232</span><a id="line.232"> return true;</a> +<span class="sourceLineNo">233</span><a id="line.233"> }</a> +<span class="sourceLineNo">234</span><a id="line.234"></a> +<span class="sourceLineNo">235</span><a id="line.235"> public static boolean start()</a> +<span class="sourceLineNo">236</span><a id="line.236"> {</a> +<span class="sourceLineNo">237</span><a id="line.237"> try {</a> +<span class="sourceLineNo">238</span><a id="line.238"> /* Attempt to start the daemon */</a> +<span class="sourceLineNo">239</span><a id="line.239"> start.invoke(daemon);</a> +<span class="sourceLineNo">240</span><a id="line.240"></a> +<span class="sourceLineNo">241</span><a id="line.241"> /* Set the availability flag in the controller */</a> +<span class="sourceLineNo">242</span><a id="line.242"> if (controller != null) {</a> +<span class="sourceLineNo">243</span><a id="line.243"> controller.setAvailable(true);</a> +<span class="sourceLineNo">244</span><a id="line.244"> }</a> +<span class="sourceLineNo">245</span><a id="line.245"></a> +<span class="sourceLineNo">246</span><a id="line.246"> } catch (final Throwable t) {</a> +<span class="sourceLineNo">247</span><a id="line.247"> /* In case we encounter ANY error, we dump the stack trace and</a> +<span class="sourceLineNo">248</span><a id="line.248"> * return false (load, start and stop won't be called).</a> +<span class="sourceLineNo">249</span><a id="line.249"> */</a> +<span class="sourceLineNo">250</span><a id="line.250"> t.printStackTrace(System.err);</a> +<span class="sourceLineNo">251</span><a id="line.251"> return false;</a> +<span class="sourceLineNo">252</span><a id="line.252"> }</a> +<span class="sourceLineNo">253</span><a id="line.253"> return true;</a> +<span class="sourceLineNo">254</span><a id="line.254"> }</a> +<span class="sourceLineNo">255</span><a id="line.255"></a> +<span class="sourceLineNo">256</span><a id="line.256"> public static boolean stop()</a> +<span class="sourceLineNo">257</span><a id="line.257"> {</a> +<span class="sourceLineNo">258</span><a id="line.258"> try {</a> +<span class="sourceLineNo">259</span><a id="line.259"> /* Set the availability flag in the controller */</a> +<span class="sourceLineNo">260</span><a id="line.260"> if (controller != null) {</a> +<span class="sourceLineNo">261</span><a id="line.261"> controller.setAvailable(false);</a> +<span class="sourceLineNo">262</span><a id="line.262"> }</a> +<span class="sourceLineNo">263</span><a id="line.263"></a> +<span class="sourceLineNo">264</span><a id="line.264"> /* Attempt to stop the daemon */</a> +<span class="sourceLineNo">265</span><a id="line.265"> stop.invoke(daemon);</a> +<span class="sourceLineNo">266</span><a id="line.266"> }</a> +<span class="sourceLineNo">267</span><a id="line.267"> catch (final Throwable t) {</a> +<span class="sourceLineNo">268</span><a id="line.268"> /* In case we encounter ANY error, we dump the stack trace and</a> +<span class="sourceLineNo">269</span><a id="line.269"> * return false (load, start and stop won't be called).</a> +<span class="sourceLineNo">270</span><a id="line.270"> */</a> +<span class="sourceLineNo">271</span><a id="line.271"> t.printStackTrace(System.err);</a> +<span class="sourceLineNo">272</span><a id="line.272"> return false;</a> +<span class="sourceLineNo">273</span><a id="line.273"> }</a> +<span class="sourceLineNo">274</span><a id="line.274"> return true;</a> +<span class="sourceLineNo">275</span><a id="line.275"> }</a> +<span class="sourceLineNo">276</span><a id="line.276"></a> +<span class="sourceLineNo">277</span><a id="line.277"> public static boolean destroy()</a> +<span class="sourceLineNo">278</span><a id="line.278"> {</a> +<span class="sourceLineNo">279</span><a id="line.279"> try {</a> +<span class="sourceLineNo">280</span><a id="line.280"> /* Attempt to stop the daemon */</a> +<span class="sourceLineNo">281</span><a id="line.281"> destroy.invoke(daemon);</a> +<span class="sourceLineNo">282</span><a id="line.282"></a> +<span class="sourceLineNo">283</span><a id="line.283"> daemon = null;</a> +<span class="sourceLineNo">284</span><a id="line.284"> controller = null;</a> +<span class="sourceLineNo">285</span><a id="line.285"> } catch (final Throwable t) {</a> +<span class="sourceLineNo">286</span><a id="line.286"> /* In case we encounter ANY error, we dump the stack trace and</a> +<span class="sourceLineNo">287</span><a id="line.287"> * return false (load, start and stop won't be called).</a> +<span class="sourceLineNo">288</span><a id="line.288"> */</a> +<span class="sourceLineNo">289</span><a id="line.289"> t.printStackTrace(System.err);</a> +<span class="sourceLineNo">290</span><a id="line.290"> return false;</a> +<span class="sourceLineNo">291</span><a id="line.291"> }</a> +<span class="sourceLineNo">292</span><a id="line.292"> return true;</a> +<span class="sourceLineNo">293</span><a id="line.293"> }</a> +<span class="sourceLineNo">294</span><a id="line.294"></a> +<span class="sourceLineNo">295</span><a id="line.295"> private static native void shutdown(boolean reload);</a> +<span class="sourceLineNo">296</span><a id="line.296"> private static native void failed(String message);</a> +<span class="sourceLineNo">297</span><a id="line.297"></a> +<span class="sourceLineNo">298</span><a id="line.298"> public static class Controller</a> +<span class="sourceLineNo">299</span><a id="line.299"> implements DaemonController</a> +<span class="sourceLineNo">300</span><a id="line.300"> {</a> +<span class="sourceLineNo">301</span><a id="line.301"></a> +<span class="sourceLineNo">302</span><a id="line.302"> private boolean available;</a> +<span class="sourceLineNo">303</span><a id="line.303"></a> +<span class="sourceLineNo">304</span><a id="line.304"> private Controller()</a> +<span class="sourceLineNo">305</span><a id="line.305"> {</a> +<span class="sourceLineNo">306</span><a id="line.306"> this.setAvailable(false);</a> +<span class="sourceLineNo">307</span><a id="line.307"> }</a> +<span class="sourceLineNo">308</span><a id="line.308"></a> +<span class="sourceLineNo">309</span><a id="line.309"> private boolean isAvailable()</a> +<span class="sourceLineNo">310</span><a id="line.310"> {</a> +<span class="sourceLineNo">311</span><a id="line.311"> synchronized (this) {</a> +<span class="sourceLineNo">312</span><a id="line.312"> return this.available;</a> +<span class="sourceLineNo">313</span><a id="line.313"> }</a> +<span class="sourceLineNo">314</span><a id="line.314"> }</a> +<span class="sourceLineNo">315</span><a id="line.315"></a> +<span class="sourceLineNo">316</span><a id="line.316"> private void setAvailable(final boolean available)</a> +<span class="sourceLineNo">317</span><a id="line.317"> {</a> +<span class="sourceLineNo">318</span><a id="line.318"> synchronized (this) {</a> +<span class="sourceLineNo">319</span><a id="line.319"> this.available = available;</a> +<span class="sourceLineNo">320</span><a id="line.320"> }</a> +<span class="sourceLineNo">321</span><a id="line.321"> }</a> +<span class="sourceLineNo">322</span><a id="line.322"></a> +<span class="sourceLineNo">323</span><a id="line.323"> @Override</a> +<span class="sourceLineNo">324</span><a id="line.324"> public void shutdown()</a> +<span class="sourceLineNo">325</span><a id="line.325"> throws IllegalStateException</a> +<span class="sourceLineNo">326</span><a id="line.326"> {</a> +<span class="sourceLineNo">327</span><a id="line.327"> synchronized (this) {</a> +<span class="sourceLineNo">328</span><a id="line.328"> if (!this.isAvailable()) {</a> +<span class="sourceLineNo">329</span><a id="line.329"> throw new IllegalStateException();</a> +<span class="sourceLineNo">330</span><a id="line.330"> }</a> +<span class="sourceLineNo">331</span><a id="line.331"> this.setAvailable(false);</a> +<span class="sourceLineNo">332</span><a id="line.332"> DaemonLoader.shutdown(false);</a> +<span class="sourceLineNo">333</span><a id="line.333"> }</a> +<span class="sourceLineNo">334</span><a id="line.334"> }</a> +<span class="sourceLineNo">335</span><a id="line.335"></a> +<span class="sourceLineNo">336</span><a id="line.336"> @Override</a> +<span class="sourceLineNo">337</span><a id="line.337"> public void reload()</a> +<span class="sourceLineNo">338</span><a id="line.338"> throws IllegalStateException</a> +<span class="sourceLineNo">339</span><a id="line.339"> {</a> +<span class="sourceLineNo">340</span><a id="line.340"> synchronized (this) {</a> +<span class="sourceLineNo">341</span><a id="line.341"> if (!this.isAvailable()) {</a> +<span class="sourceLineNo">342</span><a id="line.342"> throw new IllegalStateException();</a> +<span class="sourceLineNo">343</span><a id="line.343"> }</a> +<span class="sourceLineNo">344</span><a id="line.344"> this.setAvailable(false);</a> +<span class="sourceLineNo">345</span><a id="line.345"> DaemonLoader.shutdown(true);</a> +<span class="sourceLineNo">346</span><a id="line.346"> }</a> +<span class="sourceLineNo">347</span><a id="line.347"> }</a> +<span class="sourceLineNo">348</span><a id="line.348"></a> +<span class="sourceLineNo">349</span><a id="line.349"> @Override</a> +<span class="sourceLineNo">350</span><a id="line.350"> public void fail()</a> +<span class="sourceLineNo">351</span><a id="line.351"> {</a> +<span class="sourceLineNo">352</span><a id="line.352"> fail(null, null);</a> +<span class="sourceLineNo">353</span><a id="line.353"> }</a> +<span class="sourceLineNo">354</span><a id="line.354"></a> +<span class="sourceLineNo">355</span><a id="line.355"> @Override</a> +<span class="sourceLineNo">356</span><a id="line.356"> public void fail(final String message)</a> +<span class="sourceLineNo">357</span><a id="line.357"> {</a> +<span class="sourceLineNo">358</span><a id="line.358"> fail(message, null);</a> +<span class="sourceLineNo">359</span><a id="line.359"> }</a> +<span class="sourceLineNo">360</span><a id="line.360"></a> +<span class="sourceLineNo">361</span><a id="line.361"> @Override</a> +<span class="sourceLineNo">362</span><a id="line.362"> public void fail(final Exception exception)</a> +<span class="sourceLineNo">363</span><a id="line.363"> {</a> +<span class="sourceLineNo">364</span><a id="line.364"> fail(null, exception);</a> +<span class="sourceLineNo">365</span><a id="line.365"> }</a> +<span class="sourceLineNo">366</span><a id="line.366"></a> +<span class="sourceLineNo">367</span><a id="line.367"> @Override</a> +<span class="sourceLineNo">368</span><a id="line.368"> public void fail(final String message, final Exception exception)</a> +<span class="sourceLineNo">369</span><a id="line.369"> {</a> +<span class="sourceLineNo">370</span><a id="line.370"> synchronized (this) {</a> +<span class="sourceLineNo">371</span><a id="line.371"> this.setAvailable(false);</a> +<span class="sourceLineNo">372</span><a id="line.372"> String msg = message;</a> +<span class="sourceLineNo">373</span><a id="line.373"> if (exception != null) {</a> +<span class="sourceLineNo">374</span><a id="line.374"> if (msg != null) {</a> +<span class="sourceLineNo">375</span><a id="line.375"> msg = msg + ": " + exception.toString();</a> +<span class="sourceLineNo">376</span><a id="line.376"> }</a> +<span class="sourceLineNo">377</span><a id="line.377"> else {</a> +<span class="sourceLineNo">378</span><a id="line.378"> msg = exception.toString();</a> +<span class="sourceLineNo">379</span><a id="line.379"> }</a> +<span class="sourceLineNo">380</span><a id="line.380"> }</a> +<span class="sourceLineNo">381</span><a id="line.381"> DaemonLoader.failed(msg);</a> +<span class="sourceLineNo">382</span><a id="line.382"> }</a> +<span class="sourceLineNo">383</span><a id="line.383"> }</a> +<span class="sourceLineNo">384</span><a id="line.384"></a> +<span class="sourceLineNo">385</span><a id="line.385"> }</a> +<span class="sourceLineNo">386</span><a id="line.386"></a> +<span class="sourceLineNo">387</span><a id="line.387"> public static class Context</a> +<span class="sourceLineNo">388</span><a id="line.388"> implements DaemonContext</a> +<span class="sourceLineNo">389</span><a id="line.389"> {</a> +<span class="sourceLineNo">390</span><a id="line.390"></a> +<span class="sourceLineNo">391</span><a id="line.391"> private DaemonController daemonController;</a> +<span class="sourceLineNo">392</span><a id="line.392"></a> +<span class="sourceLineNo">393</span><a id="line.393"> private String[] args;</a> +<span class="sourceLineNo">394</span><a id="line.394"></a> +<span class="sourceLineNo">395</span><a id="line.395"> @Override</a> +<span class="sourceLineNo">396</span><a id="line.396"> public DaemonController getController()</a> +<span class="sourceLineNo">397</span><a id="line.397"> {</a> +<span class="sourceLineNo">398</span><a id="line.398"> return daemonController;</a> +<span class="sourceLineNo">399</span><a id="line.399"> }</a> +<span class="sourceLineNo">400</span><a id="line.400"></a> +<span class="sourceLineNo">401</span><a id="line.401"> public void setController(final DaemonController controller)</a> +<span class="sourceLineNo">402</span><a id="line.402"> {</a> +<span class="sourceLineNo">403</span><a id="line.403"> this.daemonController = controller;</a> +<span class="sourceLineNo">404</span><a id="line.404"> }</a> +<span class="sourceLineNo">405</span><a id="line.405"></a> +<span class="sourceLineNo">406</span><a id="line.406"> @Override</a> +<span class="sourceLineNo">407</span><a id="line.407"> public String[] getArguments()</a> +<span class="sourceLineNo">408</span><a id="line.408"> {</a> +<span class="sourceLineNo">409</span><a id="line.409"> return args;</a> +<span class="sourceLineNo">410</span><a id="line.410"> }</a> +<span class="sourceLineNo">411</span><a id="line.411"></a> +<span class="sourceLineNo">412</span><a id="line.412"> public void setArguments(final String[]args)</a> +<span class="sourceLineNo">413</span><a id="line.413"> {</a> +<span class="sourceLineNo">414</span><a id="line.414"> this.args = args;</a> +<span class="sourceLineNo">415</span><a id="line.415"> }</a> +<span class="sourceLineNo">416</span><a id="line.416"></a> +<span class="sourceLineNo">417</span><a id="line.417"> }</a> +<span class="sourceLineNo">418</span><a id="line.418">}</a> @@ -490,5 +487,6 @@ </pre> </div> +</main> </body> </html> \ No newline at end of file