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| <FONT color="green">001</FONT> /*<a name="line.1"></a> |
| <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a> |
| <FONT color="green">003</FONT> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a> |
| <FONT color="green">004</FONT> * this work for additional information regarding copyright ownership.<a name="line.4"></a> |
| <FONT color="green">005</FONT> * The ASF licenses this file to You under the Apache license, Version 2.0<a name="line.5"></a> |
| <FONT color="green">006</FONT> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> |
| <FONT color="green">007</FONT> * the License. You may obtain a copy of the License at<a name="line.7"></a> |
| <FONT color="green">008</FONT> *<a name="line.8"></a> |
| <FONT color="green">009</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> |
| <FONT color="green">010</FONT> *<a name="line.10"></a> |
| <FONT color="green">011</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> |
| <FONT color="green">012</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> |
| <FONT color="green">013</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> |
| <FONT color="green">014</FONT> * See the license for the specific language governing permissions and<a name="line.14"></a> |
| <FONT color="green">015</FONT> * limitations under the license.<a name="line.15"></a> |
| <FONT color="green">016</FONT> */<a name="line.16"></a> |
| <FONT color="green">017</FONT> package org.apache.logging.log4j.core.impl;<a name="line.17"></a> |
| <FONT color="green">018</FONT> <a name="line.18"></a> |
| <FONT color="green">019</FONT> import org.apache.logging.log4j.core.helpers.Loader;<a name="line.19"></a> |
| <FONT color="green">020</FONT> import org.apache.logging.log4j.status.StatusLogger;<a name="line.20"></a> |
| <FONT color="green">021</FONT> <a name="line.21"></a> |
| <FONT color="green">022</FONT> import java.io.PrintStream;<a name="line.22"></a> |
| <FONT color="green">023</FONT> import java.io.PrintWriter;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import java.lang.reflect.Method;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import java.lang.reflect.Modifier;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import java.net.URL;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import java.security.CodeSource;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import java.util.HashMap;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import java.util.Map;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import java.util.Stack;<a name="line.30"></a> |
| <FONT color="green">031</FONT> <a name="line.31"></a> |
| <FONT color="green">032</FONT> /**<a name="line.32"></a> |
| <FONT color="green">033</FONT> * Wraps a Throwable to add packaging information about each stack trace element.<a name="line.33"></a> |
| <FONT color="green">034</FONT> */<a name="line.34"></a> |
| <FONT color="green">035</FONT> public class ThrowableProxy extends Throwable {<a name="line.35"></a> |
| <FONT color="green">036</FONT> <a name="line.36"></a> |
| <FONT color="green">037</FONT> private static final long serialVersionUID = -2752771578252251910L;<a name="line.37"></a> |
| <FONT color="green">038</FONT> <a name="line.38"></a> |
| <FONT color="green">039</FONT> private static Method getCallerClass;<a name="line.39"></a> |
| <FONT color="green">040</FONT> <a name="line.40"></a> |
| <FONT color="green">041</FONT> private static PrivateSecurityManager securityManager;<a name="line.41"></a> |
| <FONT color="green">042</FONT> <a name="line.42"></a> |
| <FONT color="green">043</FONT> private static final org.apache.logging.log4j.Logger LOGGER = StatusLogger.getLogger();<a name="line.43"></a> |
| <FONT color="green">044</FONT> <a name="line.44"></a> |
| <FONT color="green">045</FONT> private static Method getSuppressed;<a name="line.45"></a> |
| <FONT color="green">046</FONT> <a name="line.46"></a> |
| <FONT color="green">047</FONT> private final Throwable throwable;<a name="line.47"></a> |
| <FONT color="green">048</FONT> private final ThrowableProxy cause;<a name="line.48"></a> |
| <FONT color="green">049</FONT> private final ThrowableProxy[] suppressed;<a name="line.49"></a> |
| <FONT color="green">050</FONT> private int commonElementCount;<a name="line.50"></a> |
| <FONT color="green">051</FONT> <a name="line.51"></a> |
| <FONT color="green">052</FONT> private final StackTracePackageElement[] callerPackageData;<a name="line.52"></a> |
| <FONT color="green">053</FONT> <a name="line.53"></a> |
| <FONT color="green">054</FONT> <a name="line.54"></a> |
| <FONT color="green">055</FONT> static {<a name="line.55"></a> |
| <FONT color="green">056</FONT> setupCallerCheck();<a name="line.56"></a> |
| <FONT color="green">057</FONT> versionCheck();<a name="line.57"></a> |
| <FONT color="green">058</FONT> }<a name="line.58"></a> |
| <FONT color="green">059</FONT> <a name="line.59"></a> |
| <FONT color="green">060</FONT> /**<a name="line.60"></a> |
| <FONT color="green">061</FONT> * Construct the wrapper for the Throwable that includes packaging data.<a name="line.61"></a> |
| <FONT color="green">062</FONT> * @param throwable The Throwable to wrap.<a name="line.62"></a> |
| <FONT color="green">063</FONT> */<a name="line.63"></a> |
| <FONT color="green">064</FONT> public ThrowableProxy(Throwable throwable) {<a name="line.64"></a> |
| <FONT color="green">065</FONT> this.throwable = throwable;<a name="line.65"></a> |
| <FONT color="green">066</FONT> Map<String, CacheEntry> map = new HashMap<String, CacheEntry>();<a name="line.66"></a> |
| <FONT color="green">067</FONT> Stack<Class> stack = getCurrentStack();<a name="line.67"></a> |
| <FONT color="green">068</FONT> callerPackageData = resolvePackageData(stack, map, null, throwable.getStackTrace());<a name="line.68"></a> |
| <FONT color="green">069</FONT> this.cause = (throwable.getCause() == null) ? null :<a name="line.69"></a> |
| <FONT color="green">070</FONT> new ThrowableProxy(throwable, stack, map, throwable.getCause());<a name="line.70"></a> |
| <FONT color="green">071</FONT> suppressed = getSuppressed(throwable);<a name="line.71"></a> |
| <FONT color="green">072</FONT> }<a name="line.72"></a> |
| <FONT color="green">073</FONT> <a name="line.73"></a> |
| <FONT color="green">074</FONT> /**<a name="line.74"></a> |
| <FONT color="green">075</FONT> * Constructs the wrapper for a Throwable that is referenced as the cause by another<a name="line.75"></a> |
| <FONT color="green">076</FONT> * Throwable.<a name="line.76"></a> |
| <FONT color="green">077</FONT> * @param parent The Throwable referencing this Throwable.<a name="line.77"></a> |
| <FONT color="green">078</FONT> * @param stack The Class stack.<a name="line.78"></a> |
| <FONT color="green">079</FONT> * @param map The cache containing the packaging data.<a name="line.79"></a> |
| <FONT color="green">080</FONT> * @param cause The Throwable to wrap.<a name="line.80"></a> |
| <FONT color="green">081</FONT> */<a name="line.81"></a> |
| <FONT color="green">082</FONT> private ThrowableProxy(Throwable parent, Stack<Class> stack, Map<String, CacheEntry> map, Throwable cause) {<a name="line.82"></a> |
| <FONT color="green">083</FONT> this.throwable = cause;<a name="line.83"></a> |
| <FONT color="green">084</FONT> callerPackageData = resolvePackageData(stack, map, parent.getStackTrace(), cause.getStackTrace());<a name="line.84"></a> |
| <FONT color="green">085</FONT> this.cause = (throwable.getCause() == null) ? null :<a name="line.85"></a> |
| <FONT color="green">086</FONT> new ThrowableProxy(parent, stack, map, throwable.getCause());<a name="line.86"></a> |
| <FONT color="green">087</FONT> suppressed = getSuppressed(throwable);<a name="line.87"></a> |
| <FONT color="green">088</FONT> }<a name="line.88"></a> |
| <FONT color="green">089</FONT> <a name="line.89"></a> |
| <FONT color="green">090</FONT> <a name="line.90"></a> |
| <FONT color="green">091</FONT> @Override<a name="line.91"></a> |
| <FONT color="green">092</FONT> public void setStackTrace(StackTraceElement[] stackTraceElements) {<a name="line.92"></a> |
| <FONT color="green">093</FONT> throw new UnsupportedOperationException("Cannot set the stack trace on a ThrowableProxy");<a name="line.93"></a> |
| <FONT color="green">094</FONT> }<a name="line.94"></a> |
| <FONT color="green">095</FONT> <a name="line.95"></a> |
| <FONT color="green">096</FONT> @Override<a name="line.96"></a> |
| <FONT color="green">097</FONT> public String getMessage() {<a name="line.97"></a> |
| <FONT color="green">098</FONT> return throwable.getMessage();<a name="line.98"></a> |
| <FONT color="green">099</FONT> }<a name="line.99"></a> |
| <FONT color="green">100</FONT> <a name="line.100"></a> |
| <FONT color="green">101</FONT> @Override<a name="line.101"></a> |
| <FONT color="green">102</FONT> public String getLocalizedMessage() {<a name="line.102"></a> |
| <FONT color="green">103</FONT> return throwable.getLocalizedMessage();<a name="line.103"></a> |
| <FONT color="green">104</FONT> }<a name="line.104"></a> |
| <FONT color="green">105</FONT> <a name="line.105"></a> |
| <FONT color="green">106</FONT> @Override<a name="line.106"></a> |
| <FONT color="green">107</FONT> public Throwable getCause() {<a name="line.107"></a> |
| <FONT color="green">108</FONT> return cause;<a name="line.108"></a> |
| <FONT color="green">109</FONT> }<a name="line.109"></a> |
| <FONT color="green">110</FONT> <a name="line.110"></a> |
| <FONT color="green">111</FONT> /**<a name="line.111"></a> |
| <FONT color="green">112</FONT> * Added in Java 7.<a name="line.112"></a> |
| <FONT color="green">113</FONT> * @param exception A Throwable that was suppressed.<a name="line.113"></a> |
| <FONT color="green">114</FONT> */<a name="line.114"></a> |
| <FONT color="green">115</FONT> public void addSuppressed(Throwable exception) {<a name="line.115"></a> |
| <FONT color="green">116</FONT> throw new UnsupportedOperationException("Cannot add suppressed exceptions to a ThrowableProxy");<a name="line.116"></a> |
| <FONT color="green">117</FONT> }<a name="line.117"></a> |
| <FONT color="green">118</FONT> <a name="line.118"></a> |
| <FONT color="green">119</FONT> /**<a name="line.119"></a> |
| <FONT color="green">120</FONT> * Added in Java 7.<a name="line.120"></a> |
| <FONT color="green">121</FONT> * @return Any suppressed exceptions.<a name="line.121"></a> |
| <FONT color="green">122</FONT> */<a name="line.122"></a> |
| <FONT color="green">123</FONT> public Throwable[] getSuppressed() {<a name="line.123"></a> |
| <FONT color="green">124</FONT> return suppressed;<a name="line.124"></a> |
| <FONT color="green">125</FONT> }<a name="line.125"></a> |
| <FONT color="green">126</FONT> <a name="line.126"></a> |
| <FONT color="green">127</FONT> @Override<a name="line.127"></a> |
| <FONT color="green">128</FONT> public Throwable initCause(Throwable throwable) {<a name="line.128"></a> |
| <FONT color="green">129</FONT> throw new IllegalStateException("Cannot set the cause on a ThrowableProxy");<a name="line.129"></a> |
| <FONT color="green">130</FONT> }<a name="line.130"></a> |
| <FONT color="green">131</FONT> <a name="line.131"></a> |
| <FONT color="green">132</FONT> @Override<a name="line.132"></a> |
| <FONT color="green">133</FONT> public String toString() {<a name="line.133"></a> |
| <FONT color="green">134</FONT> return throwable.toString();<a name="line.134"></a> |
| <FONT color="green">135</FONT> }<a name="line.135"></a> |
| <FONT color="green">136</FONT> <a name="line.136"></a> |
| <FONT color="green">137</FONT> @Override<a name="line.137"></a> |
| <FONT color="green">138</FONT> public void printStackTrace() {<a name="line.138"></a> |
| <FONT color="green">139</FONT> throwable.printStackTrace();<a name="line.139"></a> |
| <FONT color="green">140</FONT> }<a name="line.140"></a> |
| <FONT color="green">141</FONT> <a name="line.141"></a> |
| <FONT color="green">142</FONT> @Override<a name="line.142"></a> |
| <FONT color="green">143</FONT> public void printStackTrace(PrintStream printStream) {<a name="line.143"></a> |
| <FONT color="green">144</FONT> throwable.printStackTrace(printStream);<a name="line.144"></a> |
| <FONT color="green">145</FONT> }<a name="line.145"></a> |
| <FONT color="green">146</FONT> <a name="line.146"></a> |
| <FONT color="green">147</FONT> @Override<a name="line.147"></a> |
| <FONT color="green">148</FONT> public void printStackTrace(PrintWriter printWriter) {<a name="line.148"></a> |
| <FONT color="green">149</FONT> throwable.printStackTrace(printWriter);<a name="line.149"></a> |
| <FONT color="green">150</FONT> }<a name="line.150"></a> |
| <FONT color="green">151</FONT> <a name="line.151"></a> |
| <FONT color="green">152</FONT> @Override<a name="line.152"></a> |
| <FONT color="green">153</FONT> public Throwable fillInStackTrace() {<a name="line.153"></a> |
| <FONT color="green">154</FONT> return this;<a name="line.154"></a> |
| <FONT color="green">155</FONT> }<a name="line.155"></a> |
| <FONT color="green">156</FONT> <a name="line.156"></a> |
| <FONT color="green">157</FONT> @Override<a name="line.157"></a> |
| <FONT color="green">158</FONT> public StackTraceElement[] getStackTrace() {<a name="line.158"></a> |
| <FONT color="green">159</FONT> return throwable.getStackTrace();<a name="line.159"></a> |
| <FONT color="green">160</FONT> }<a name="line.160"></a> |
| <FONT color="green">161</FONT> <a name="line.161"></a> |
| <FONT color="green">162</FONT> /**<a name="line.162"></a> |
| <FONT color="green">163</FONT> * Format the Throwable that is the cause of this Throwable.<a name="line.163"></a> |
| <FONT color="green">164</FONT> * @return The formatted Throwable that caused this Throwable.<a name="line.164"></a> |
| <FONT color="green">165</FONT> */<a name="line.165"></a> |
| <FONT color="green">166</FONT> public String getRootCauseStackTrace() {<a name="line.166"></a> |
| <FONT color="green">167</FONT> StringBuilder sb = new StringBuilder();<a name="line.167"></a> |
| <FONT color="green">168</FONT> if (cause != null) {<a name="line.168"></a> |
| <FONT color="green">169</FONT> formatWrapper(sb, cause);<a name="line.169"></a> |
| <FONT color="green">170</FONT> sb.append("Wrapped by: ");<a name="line.170"></a> |
| <FONT color="green">171</FONT> }<a name="line.171"></a> |
| <FONT color="green">172</FONT> sb.append(throwable.toString());<a name="line.172"></a> |
| <FONT color="green">173</FONT> sb.append("\n");<a name="line.173"></a> |
| <FONT color="green">174</FONT> formatElements(sb, 0, throwable.getStackTrace(), callerPackageData);<a name="line.174"></a> |
| <FONT color="green">175</FONT> return sb.toString();<a name="line.175"></a> |
| <FONT color="green">176</FONT> }<a name="line.176"></a> |
| <FONT color="green">177</FONT> <a name="line.177"></a> |
| <FONT color="green">178</FONT> /**<a name="line.178"></a> |
| <FONT color="green">179</FONT> * Formats the specified Throwable.<a name="line.179"></a> |
| <FONT color="green">180</FONT> * @param sb StringBuilder to contain the formatted Throwable.<a name="line.180"></a> |
| <FONT color="green">181</FONT> * @param cause The Throwable to format.<a name="line.181"></a> |
| <FONT color="green">182</FONT> */<a name="line.182"></a> |
| <FONT color="green">183</FONT> public void formatWrapper(StringBuilder sb, ThrowableProxy cause) {<a name="line.183"></a> |
| <FONT color="green">184</FONT> Throwable caused = cause.getCause();<a name="line.184"></a> |
| <FONT color="green">185</FONT> if (caused != null) {<a name="line.185"></a> |
| <FONT color="green">186</FONT> formatWrapper(sb, cause.cause);<a name="line.186"></a> |
| <FONT color="green">187</FONT> sb.append("Wrapped by: ");<a name="line.187"></a> |
| <FONT color="green">188</FONT> }<a name="line.188"></a> |
| <FONT color="green">189</FONT> sb.append(cause).append("\n");<a name="line.189"></a> |
| <FONT color="green">190</FONT> formatElements(sb, cause.commonElementCount, cause.getStackTrace(), cause.callerPackageData);<a name="line.190"></a> |
| <FONT color="green">191</FONT> }<a name="line.191"></a> |
| <FONT color="green">192</FONT> <a name="line.192"></a> |
| <FONT color="green">193</FONT> /**<a name="line.193"></a> |
| <FONT color="green">194</FONT> * Format the stack trace including packaging information.<a name="line.194"></a> |
| <FONT color="green">195</FONT> * @return The formatted stack trace including packaging information.<a name="line.195"></a> |
| <FONT color="green">196</FONT> */<a name="line.196"></a> |
| <FONT color="green">197</FONT> public String getExtendedStackTrace() {<a name="line.197"></a> |
| <FONT color="green">198</FONT> StringBuilder sb = new StringBuilder(throwable.toString());<a name="line.198"></a> |
| <FONT color="green">199</FONT> sb.append("\n");<a name="line.199"></a> |
| <FONT color="green">200</FONT> formatElements(sb, 0, throwable.getStackTrace(), callerPackageData);<a name="line.200"></a> |
| <FONT color="green">201</FONT> if (cause != null) {<a name="line.201"></a> |
| <FONT color="green">202</FONT> formatCause(sb, cause);<a name="line.202"></a> |
| <FONT color="green">203</FONT> }<a name="line.203"></a> |
| <FONT color="green">204</FONT> return sb.toString();<a name="line.204"></a> |
| <FONT color="green">205</FONT> }<a name="line.205"></a> |
| <FONT color="green">206</FONT> <a name="line.206"></a> |
| <FONT color="green">207</FONT> /**<a name="line.207"></a> |
| <FONT color="green">208</FONT> * Format the suppressed Throwables.<a name="line.208"></a> |
| <FONT color="green">209</FONT> * @return The formatted suppressed Throwables.<a name="line.209"></a> |
| <FONT color="green">210</FONT> */<a name="line.210"></a> |
| <FONT color="green">211</FONT> public String getSuppressedStackTrace() {<a name="line.211"></a> |
| <FONT color="green">212</FONT> if (suppressed == null || suppressed.length == 0) {<a name="line.212"></a> |
| <FONT color="green">213</FONT> return "";<a name="line.213"></a> |
| <FONT color="green">214</FONT> }<a name="line.214"></a> |
| <FONT color="green">215</FONT> StringBuilder sb = new StringBuilder("Suppressed Stack Trace Elements:\n");<a name="line.215"></a> |
| <FONT color="green">216</FONT> for (ThrowableProxy proxy : suppressed) {<a name="line.216"></a> |
| <FONT color="green">217</FONT> sb.append(proxy.getExtendedStackTrace());<a name="line.217"></a> |
| <FONT color="green">218</FONT> }<a name="line.218"></a> |
| <FONT color="green">219</FONT> return sb.toString();<a name="line.219"></a> |
| <FONT color="green">220</FONT> }<a name="line.220"></a> |
| <FONT color="green">221</FONT> <a name="line.221"></a> |
| <FONT color="green">222</FONT> private void formatCause(StringBuilder sb, ThrowableProxy cause) {<a name="line.222"></a> |
| <FONT color="green">223</FONT> sb.append("Caused by: ").append(cause).append("\n");<a name="line.223"></a> |
| <FONT color="green">224</FONT> formatElements(sb, cause.commonElementCount, cause.getStackTrace(), cause.callerPackageData);<a name="line.224"></a> |
| <FONT color="green">225</FONT> if (cause.getCause() != null) {<a name="line.225"></a> |
| <FONT color="green">226</FONT> formatCause(sb, cause.cause);<a name="line.226"></a> |
| <FONT color="green">227</FONT> }<a name="line.227"></a> |
| <FONT color="green">228</FONT> }<a name="line.228"></a> |
| <FONT color="green">229</FONT> <a name="line.229"></a> |
| <FONT color="green">230</FONT> private void formatElements(StringBuilder sb, int commonCount, StackTraceElement[] causedTrace,<a name="line.230"></a> |
| <FONT color="green">231</FONT> StackTracePackageElement[] packageData) {<a name="line.231"></a> |
| <FONT color="green">232</FONT> for (int i = 0; i < packageData.length; ++i) {<a name="line.232"></a> |
| <FONT color="green">233</FONT> sb.append("\tat ");<a name="line.233"></a> |
| <FONT color="green">234</FONT> sb.append(causedTrace[i]);<a name="line.234"></a> |
| <FONT color="green">235</FONT> sb.append(" ");<a name="line.235"></a> |
| <FONT color="green">236</FONT> sb.append(packageData[i]);<a name="line.236"></a> |
| <FONT color="green">237</FONT> sb.append("\n");<a name="line.237"></a> |
| <FONT color="green">238</FONT> }<a name="line.238"></a> |
| <FONT color="green">239</FONT> if (commonCount != 0) {<a name="line.239"></a> |
| <FONT color="green">240</FONT> sb.append("\t... ").append(commonCount).append(" more").append("\n");<a name="line.240"></a> |
| <FONT color="green">241</FONT> }<a name="line.241"></a> |
| <FONT color="green">242</FONT> }<a name="line.242"></a> |
| <FONT color="green">243</FONT> <a name="line.243"></a> |
| <FONT color="green">244</FONT> /**<a name="line.244"></a> |
| <FONT color="green">245</FONT> * Initialize the cache by resolving everything in the current stack trace via Reflection.getCallerClass<a name="line.245"></a> |
| <FONT color="green">246</FONT> * or via the SecurityManager if either are available. These are the only Classes that can be trusted<a name="line.246"></a> |
| <FONT color="green">247</FONT> * to be accurate.<a name="line.247"></a> |
| <FONT color="green">248</FONT> * @return A Deque containing the current stack of Class objects.<a name="line.248"></a> |
| <FONT color="green">249</FONT> */<a name="line.249"></a> |
| <FONT color="green">250</FONT> private Stack<Class> getCurrentStack() {<a name="line.250"></a> |
| <FONT color="green">251</FONT> if (getCallerClass != null) {<a name="line.251"></a> |
| <FONT color="green">252</FONT> Stack<Class> classes = new Stack<Class>();<a name="line.252"></a> |
| <FONT color="green">253</FONT> int index = 2;<a name="line.253"></a> |
| <FONT color="green">254</FONT> Class clazz = getCallerClass(index);<a name="line.254"></a> |
| <FONT color="green">255</FONT> while (clazz != null) {<a name="line.255"></a> |
| <FONT color="green">256</FONT> classes.push(clazz);<a name="line.256"></a> |
| <FONT color="green">257</FONT> clazz = getCallerClass(++index);<a name="line.257"></a> |
| <FONT color="green">258</FONT> }<a name="line.258"></a> |
| <FONT color="green">259</FONT> return classes;<a name="line.259"></a> |
| <FONT color="green">260</FONT> } else if (securityManager != null) {<a name="line.260"></a> |
| <FONT color="green">261</FONT> Class[] array = securityManager.getClasses();<a name="line.261"></a> |
| <FONT color="green">262</FONT> Stack<Class> classes = new Stack<Class>();<a name="line.262"></a> |
| <FONT color="green">263</FONT> for (Class clazz : array) {<a name="line.263"></a> |
| <FONT color="green">264</FONT> classes.push(clazz);<a name="line.264"></a> |
| <FONT color="green">265</FONT> }<a name="line.265"></a> |
| <FONT color="green">266</FONT> return classes;<a name="line.266"></a> |
| <FONT color="green">267</FONT> }<a name="line.267"></a> |
| <FONT color="green">268</FONT> return new Stack<Class>();<a name="line.268"></a> |
| <FONT color="green">269</FONT> }<a name="line.269"></a> |
| <FONT color="green">270</FONT> <a name="line.270"></a> |
| <FONT color="green">271</FONT> /**<a name="line.271"></a> |
| <FONT color="green">272</FONT> * Resolve all the stack entries in this stack trace that are not common with the parent.<a name="line.272"></a> |
| <FONT color="green">273</FONT> * @param stack The callers Class stack.<a name="line.273"></a> |
| <FONT color="green">274</FONT> * @param map The cache of CacheEntry objects.<a name="line.274"></a> |
| <FONT color="green">275</FONT> * @param rootTrace The first stack trace resolve or null.<a name="line.275"></a> |
| <FONT color="green">276</FONT> * @param stackTrace The stack trace being resolved.<a name="line.276"></a> |
| <FONT color="green">277</FONT> * @return The StackTracePackageElement array.<a name="line.277"></a> |
| <FONT color="green">278</FONT> */<a name="line.278"></a> |
| <FONT color="green">279</FONT> private StackTracePackageElement[] resolvePackageData(Stack<Class> stack, Map<String, CacheEntry> map,<a name="line.279"></a> |
| <FONT color="green">280</FONT> StackTraceElement[] rootTrace,<a name="line.280"></a> |
| <FONT color="green">281</FONT> StackTraceElement[] stackTrace) {<a name="line.281"></a> |
| <FONT color="green">282</FONT> int stackLength;<a name="line.282"></a> |
| <FONT color="green">283</FONT> if (rootTrace != null) {<a name="line.283"></a> |
| <FONT color="green">284</FONT> int rootIndex = rootTrace.length - 1;<a name="line.284"></a> |
| <FONT color="green">285</FONT> int stackIndex = stackTrace.length - 1;<a name="line.285"></a> |
| <FONT color="green">286</FONT> while (rootIndex >= 0 && stackIndex >= 0 && rootTrace[rootIndex].equals(stackTrace[stackIndex])) {<a name="line.286"></a> |
| <FONT color="green">287</FONT> --rootIndex;<a name="line.287"></a> |
| <FONT color="green">288</FONT> --stackIndex;<a name="line.288"></a> |
| <FONT color="green">289</FONT> }<a name="line.289"></a> |
| <FONT color="green">290</FONT> commonElementCount = stackTrace.length - 1 - stackIndex;<a name="line.290"></a> |
| <FONT color="green">291</FONT> stackLength = stackIndex + 1;<a name="line.291"></a> |
| <FONT color="green">292</FONT> } else {<a name="line.292"></a> |
| <FONT color="green">293</FONT> commonElementCount = 0;<a name="line.293"></a> |
| <FONT color="green">294</FONT> stackLength = stackTrace.length;<a name="line.294"></a> |
| <FONT color="green">295</FONT> }<a name="line.295"></a> |
| <FONT color="green">296</FONT> StackTracePackageElement[] packageArray = new StackTracePackageElement[stackLength];<a name="line.296"></a> |
| <FONT color="green">297</FONT> Class clazz = stack.peek();<a name="line.297"></a> |
| <FONT color="green">298</FONT> ClassLoader lastLoader = null;<a name="line.298"></a> |
| <FONT color="green">299</FONT> for (int i = stackLength - 1; i >= 0; --i) {<a name="line.299"></a> |
| <FONT color="green">300</FONT> String className = stackTrace[i].getClassName();<a name="line.300"></a> |
| <FONT color="green">301</FONT> // The stack returned from getCurrentStack will be missing entries for java.lang.reflect.Method.invoke()<a name="line.301"></a> |
| <FONT color="green">302</FONT> // and its implementation. The Throwable might also contain stack entries that are no longer<a name="line.302"></a> |
| <FONT color="green">303</FONT> // present as those methods have returned.<a name="line.303"></a> |
| <FONT color="green">304</FONT> if (className.equals(clazz.getName())) {<a name="line.304"></a> |
| <FONT color="green">305</FONT> CacheEntry entry = resolvePackageElement(clazz, true);<a name="line.305"></a> |
| <FONT color="green">306</FONT> packageArray[i] = entry.element;<a name="line.306"></a> |
| <FONT color="green">307</FONT> lastLoader = entry.loader;<a name="line.307"></a> |
| <FONT color="green">308</FONT> stack.pop();<a name="line.308"></a> |
| <FONT color="green">309</FONT> clazz = stack.peek();<a name="line.309"></a> |
| <FONT color="green">310</FONT> } else {<a name="line.310"></a> |
| <FONT color="green">311</FONT> if (map.containsKey(className)) {<a name="line.311"></a> |
| <FONT color="green">312</FONT> CacheEntry entry = map.get(className);<a name="line.312"></a> |
| <FONT color="green">313</FONT> packageArray[i] = entry.element;<a name="line.313"></a> |
| <FONT color="green">314</FONT> if (entry.loader != null) {<a name="line.314"></a> |
| <FONT color="green">315</FONT> lastLoader = entry.loader;<a name="line.315"></a> |
| <FONT color="green">316</FONT> }<a name="line.316"></a> |
| <FONT color="green">317</FONT> } else {<a name="line.317"></a> |
| <FONT color="green">318</FONT> CacheEntry entry = resolvePackageElement(loadClass(lastLoader, className), false);<a name="line.318"></a> |
| <FONT color="green">319</FONT> packageArray[i] = entry.element;<a name="line.319"></a> |
| <FONT color="green">320</FONT> map.put(className, entry);<a name="line.320"></a> |
| <FONT color="green">321</FONT> if (entry.loader != null) {<a name="line.321"></a> |
| <FONT color="green">322</FONT> lastLoader = entry.loader;<a name="line.322"></a> |
| <FONT color="green">323</FONT> }<a name="line.323"></a> |
| <FONT color="green">324</FONT> }<a name="line.324"></a> |
| <FONT color="green">325</FONT> }<a name="line.325"></a> |
| <FONT color="green">326</FONT> }<a name="line.326"></a> |
| <FONT color="green">327</FONT> return packageArray;<a name="line.327"></a> |
| <FONT color="green">328</FONT> }<a name="line.328"></a> |
| <FONT color="green">329</FONT> <a name="line.329"></a> |
| <FONT color="green">330</FONT> <a name="line.330"></a> |
| <FONT color="green">331</FONT> /**<a name="line.331"></a> |
| <FONT color="green">332</FONT> * Construct the CacheEntry from the Class's information.<a name="line.332"></a> |
| <FONT color="green">333</FONT> * @param callerClass The Class.<a name="line.333"></a> |
| <FONT color="green">334</FONT> * @param exact True if the class was obtained via Reflection.getCallerClass.<a name="line.334"></a> |
| <FONT color="green">335</FONT> * @return The CacheEntry.<a name="line.335"></a> |
| <FONT color="green">336</FONT> */<a name="line.336"></a> |
| <FONT color="green">337</FONT> private CacheEntry resolvePackageElement(Class callerClass, boolean exact) {<a name="line.337"></a> |
| <FONT color="green">338</FONT> String location = "?";<a name="line.338"></a> |
| <FONT color="green">339</FONT> String version = "?";<a name="line.339"></a> |
| <FONT color="green">340</FONT> ClassLoader lastLoader = null;<a name="line.340"></a> |
| <FONT color="green">341</FONT> if (callerClass != null) {<a name="line.341"></a> |
| <FONT color="green">342</FONT> try {<a name="line.342"></a> |
| <FONT color="green">343</FONT> CodeSource source = callerClass.getProtectionDomain().getCodeSource();<a name="line.343"></a> |
| <FONT color="green">344</FONT> if (source != null) {<a name="line.344"></a> |
| <FONT color="green">345</FONT> URL locationURL = source.getLocation();<a name="line.345"></a> |
| <FONT color="green">346</FONT> if (locationURL != null) {<a name="line.346"></a> |
| <FONT color="green">347</FONT> String str = locationURL.toString().replace('\\', '/');<a name="line.347"></a> |
| <FONT color="green">348</FONT> int index = str.lastIndexOf("/");<a name="line.348"></a> |
| <FONT color="green">349</FONT> if (index >= 0 && index == str.length() - 1) {<a name="line.349"></a> |
| <FONT color="green">350</FONT> index = str.lastIndexOf("/", index - 1);<a name="line.350"></a> |
| <FONT color="green">351</FONT> location = str.substring(index + 1);<a name="line.351"></a> |
| <FONT color="green">352</FONT> } else {<a name="line.352"></a> |
| <FONT color="green">353</FONT> location = str.substring(index + 1);<a name="line.353"></a> |
| <FONT color="green">354</FONT> }<a name="line.354"></a> |
| <FONT color="green">355</FONT> }<a name="line.355"></a> |
| <FONT color="green">356</FONT> }<a name="line.356"></a> |
| <FONT color="green">357</FONT> } catch (Exception ex) {<a name="line.357"></a> |
| <FONT color="green">358</FONT> // Ignore the exception.<a name="line.358"></a> |
| <FONT color="green">359</FONT> }<a name="line.359"></a> |
| <FONT color="green">360</FONT> Package pkg = callerClass.getPackage();<a name="line.360"></a> |
| <FONT color="green">361</FONT> if (pkg != null) {<a name="line.361"></a> |
| <FONT color="green">362</FONT> String ver = pkg.getImplementationVersion();<a name="line.362"></a> |
| <FONT color="green">363</FONT> if (ver != null) {<a name="line.363"></a> |
| <FONT color="green">364</FONT> version = ver;<a name="line.364"></a> |
| <FONT color="green">365</FONT> }<a name="line.365"></a> |
| <FONT color="green">366</FONT> }<a name="line.366"></a> |
| <FONT color="green">367</FONT> lastLoader = callerClass.getClassLoader();<a name="line.367"></a> |
| <FONT color="green">368</FONT> }<a name="line.368"></a> |
| <FONT color="green">369</FONT> return new CacheEntry(new StackTracePackageElement(location, version, exact), lastLoader);<a name="line.369"></a> |
| <FONT color="green">370</FONT> }<a name="line.370"></a> |
| <FONT color="green">371</FONT> <a name="line.371"></a> |
| <FONT color="green">372</FONT> /**<a name="line.372"></a> |
| <FONT color="green">373</FONT> * Invoke Reflection.getCallerClass via reflection. This is slightly slower than calling the method<a name="line.373"></a> |
| <FONT color="green">374</FONT> * directly but removes any dependency on Sun's JDK being present at compile time. The difference<a name="line.374"></a> |
| <FONT color="green">375</FONT> * can be measured by running the ReflectionComparison test.<a name="line.375"></a> |
| <FONT color="green">376</FONT> * @param index The index into the stack trace.<a name="line.376"></a> |
| <FONT color="green">377</FONT> * @return The Class at the specified stack entry.<a name="line.377"></a> |
| <FONT color="green">378</FONT> */<a name="line.378"></a> |
| <FONT color="green">379</FONT> private Class getCallerClass(int index) {<a name="line.379"></a> |
| <FONT color="green">380</FONT> if (getCallerClass != null) {<a name="line.380"></a> |
| <FONT color="green">381</FONT> try {<a name="line.381"></a> |
| <FONT color="green">382</FONT> Object[] params = new Object[]{index};<a name="line.382"></a> |
| <FONT color="green">383</FONT> return (Class) getCallerClass.invoke(null, params);<a name="line.383"></a> |
| <FONT color="green">384</FONT> } catch (Exception ex) {<a name="line.384"></a> |
| <FONT color="green">385</FONT> // logger.debug("Unable to determine caller class via Sun Reflection", ex);<a name="line.385"></a> |
| <FONT color="green">386</FONT> }<a name="line.386"></a> |
| <FONT color="green">387</FONT> }<a name="line.387"></a> |
| <FONT color="green">388</FONT> return null;<a name="line.388"></a> |
| <FONT color="green">389</FONT> }<a name="line.389"></a> |
| <FONT color="green">390</FONT> <a name="line.390"></a> |
| <FONT color="green">391</FONT> /**<a name="line.391"></a> |
| <FONT color="green">392</FONT> * Loads classes not located via Reflection.getCallerClass.<a name="line.392"></a> |
| <FONT color="green">393</FONT> * @param lastLoader The ClassLoader that loaded the Class that called this Class.<a name="line.393"></a> |
| <FONT color="green">394</FONT> * @param className The name of the Class.<a name="line.394"></a> |
| <FONT color="green">395</FONT> * @return The Class object for the Class or null if it could not be located.<a name="line.395"></a> |
| <FONT color="green">396</FONT> */<a name="line.396"></a> |
| <FONT color="green">397</FONT> private Class loadClass(ClassLoader lastLoader, String className) {<a name="line.397"></a> |
| <FONT color="green">398</FONT> Class clazz;<a name="line.398"></a> |
| <FONT color="green">399</FONT> if (lastLoader != null) {<a name="line.399"></a> |
| <FONT color="green">400</FONT> try {<a name="line.400"></a> |
| <FONT color="green">401</FONT> clazz = lastLoader.loadClass(className);<a name="line.401"></a> |
| <FONT color="green">402</FONT> if (clazz != null) {<a name="line.402"></a> |
| <FONT color="green">403</FONT> return clazz;<a name="line.403"></a> |
| <FONT color="green">404</FONT> }<a name="line.404"></a> |
| <FONT color="green">405</FONT> } catch (Exception ex) {<a name="line.405"></a> |
| <FONT color="green">406</FONT> // Ignore exception.<a name="line.406"></a> |
| <FONT color="green">407</FONT> }<a name="line.407"></a> |
| <FONT color="green">408</FONT> }<a name="line.408"></a> |
| <FONT color="green">409</FONT> try {<a name="line.409"></a> |
| <FONT color="green">410</FONT> clazz = Thread.currentThread().getContextClassLoader().loadClass(className);<a name="line.410"></a> |
| <FONT color="green">411</FONT> } catch (ClassNotFoundException e) {<a name="line.411"></a> |
| <FONT color="green">412</FONT> try {<a name="line.412"></a> |
| <FONT color="green">413</FONT> clazz = Class.forName(className);<a name="line.413"></a> |
| <FONT color="green">414</FONT> } catch (ClassNotFoundException e1) {<a name="line.414"></a> |
| <FONT color="green">415</FONT> try {<a name="line.415"></a> |
| <FONT color="green">416</FONT> clazz = getClass().getClassLoader().loadClass(className);<a name="line.416"></a> |
| <FONT color="green">417</FONT> } catch (ClassNotFoundException e2) {<a name="line.417"></a> |
| <FONT color="green">418</FONT> return null;<a name="line.418"></a> |
| <FONT color="green">419</FONT> }<a name="line.419"></a> |
| <FONT color="green">420</FONT> }<a name="line.420"></a> |
| <FONT color="green">421</FONT> }<a name="line.421"></a> |
| <FONT color="green">422</FONT> return clazz;<a name="line.422"></a> |
| <FONT color="green">423</FONT> }<a name="line.423"></a> |
| <FONT color="green">424</FONT> <a name="line.424"></a> |
| <FONT color="green">425</FONT> private static void versionCheck() {<a name="line.425"></a> |
| <FONT color="green">426</FONT> Method[] methods = Throwable.class.getMethods();<a name="line.426"></a> |
| <FONT color="green">427</FONT> for (Method method : methods) {<a name="line.427"></a> |
| <FONT color="green">428</FONT> if (method.getName().equals("getSuppressed")) {<a name="line.428"></a> |
| <FONT color="green">429</FONT> getSuppressed = method;<a name="line.429"></a> |
| <FONT color="green">430</FONT> }<a name="line.430"></a> |
| <FONT color="green">431</FONT> }<a name="line.431"></a> |
| <FONT color="green">432</FONT> }<a name="line.432"></a> |
| <FONT color="green">433</FONT> <a name="line.433"></a> |
| <FONT color="green">434</FONT> /**<a name="line.434"></a> |
| <FONT color="green">435</FONT> * Determine if Reflection.getCallerClass is available.<a name="line.435"></a> |
| <FONT color="green">436</FONT> */<a name="line.436"></a> |
| <FONT color="green">437</FONT> private static void setupCallerCheck() {<a name="line.437"></a> |
| <FONT color="green">438</FONT> try {<a name="line.438"></a> |
| <FONT color="green">439</FONT> ClassLoader loader = Loader.getClassLoader();<a name="line.439"></a> |
| <FONT color="green">440</FONT> Class clazz = loader.loadClass("sun.reflect.Reflection");<a name="line.440"></a> |
| <FONT color="green">441</FONT> Method[] methods = clazz.getMethods();<a name="line.441"></a> |
| <FONT color="green">442</FONT> for (Method method : methods) {<a name="line.442"></a> |
| <FONT color="green">443</FONT> int modifier = method.getModifiers();<a name="line.443"></a> |
| <FONT color="green">444</FONT> if (method.getName().equals("getCallerClass") && Modifier.isStatic(modifier)) {<a name="line.444"></a> |
| <FONT color="green">445</FONT> getCallerClass = method;<a name="line.445"></a> |
| <FONT color="green">446</FONT> return;<a name="line.446"></a> |
| <FONT color="green">447</FONT> }<a name="line.447"></a> |
| <FONT color="green">448</FONT> }<a name="line.448"></a> |
| <FONT color="green">449</FONT> } catch (ClassNotFoundException cnfe) {<a name="line.449"></a> |
| <FONT color="green">450</FONT> LOGGER.debug("sun.reflect.Reflection is not installed");<a name="line.450"></a> |
| <FONT color="green">451</FONT> }<a name="line.451"></a> |
| <FONT color="green">452</FONT> <a name="line.452"></a> |
| <FONT color="green">453</FONT> try {<a name="line.453"></a> |
| <FONT color="green">454</FONT> PrivateSecurityManager mgr = new PrivateSecurityManager();<a name="line.454"></a> |
| <FONT color="green">455</FONT> if (mgr.getClasses() != null) {<a name="line.455"></a> |
| <FONT color="green">456</FONT> securityManager = mgr;<a name="line.456"></a> |
| <FONT color="green">457</FONT> } else {<a name="line.457"></a> |
| <FONT color="green">458</FONT> // This shouldn't happen.<a name="line.458"></a> |
| <FONT color="green">459</FONT> LOGGER.error("Unable to obtain call stack from security manager");<a name="line.459"></a> |
| <FONT color="green">460</FONT> }<a name="line.460"></a> |
| <FONT color="green">461</FONT> } catch (Exception ex) {<a name="line.461"></a> |
| <FONT color="green">462</FONT> LOGGER.debug("Unable to install security manager", ex);<a name="line.462"></a> |
| <FONT color="green">463</FONT> }<a name="line.463"></a> |
| <FONT color="green">464</FONT> }<a name="line.464"></a> |
| <FONT color="green">465</FONT> <a name="line.465"></a> |
| <FONT color="green">466</FONT> private ThrowableProxy[] getSuppressed(Throwable throwable) {<a name="line.466"></a> |
| <FONT color="green">467</FONT> ThrowableProxy[] supp = null;<a name="line.467"></a> |
| <FONT color="green">468</FONT> if (getSuppressed != null) {<a name="line.468"></a> |
| <FONT color="green">469</FONT> try {<a name="line.469"></a> |
| <FONT color="green">470</FONT> Throwable[] array = (Throwable[]) getSuppressed.invoke(throwable, null);<a name="line.470"></a> |
| <FONT color="green">471</FONT> supp = new ThrowableProxy[array.length];<a name="line.471"></a> |
| <FONT color="green">472</FONT> int i = 0;<a name="line.472"></a> |
| <FONT color="green">473</FONT> for (Throwable t : array) {<a name="line.473"></a> |
| <FONT color="green">474</FONT> supp[i] = new ThrowableProxy(t);<a name="line.474"></a> |
| <FONT color="green">475</FONT> ++i;<a name="line.475"></a> |
| <FONT color="green">476</FONT> }<a name="line.476"></a> |
| <FONT color="green">477</FONT> } catch (Exception ex) {<a name="line.477"></a> |
| <FONT color="green">478</FONT> //<a name="line.478"></a> |
| <FONT color="green">479</FONT> }<a name="line.479"></a> |
| <FONT color="green">480</FONT> }<a name="line.480"></a> |
| <FONT color="green">481</FONT> return supp;<a name="line.481"></a> |
| <FONT color="green">482</FONT> }<a name="line.482"></a> |
| <FONT color="green">483</FONT> <a name="line.483"></a> |
| <FONT color="green">484</FONT> /**<a name="line.484"></a> |
| <FONT color="green">485</FONT> * Cached StackTracePackageElement and the ClassLoader.<a name="line.485"></a> |
| <FONT color="green">486</FONT> */<a name="line.486"></a> |
| <FONT color="green">487</FONT> private class CacheEntry {<a name="line.487"></a> |
| <FONT color="green">488</FONT> private StackTracePackageElement element;<a name="line.488"></a> |
| <FONT color="green">489</FONT> private ClassLoader loader;<a name="line.489"></a> |
| <FONT color="green">490</FONT> <a name="line.490"></a> |
| <FONT color="green">491</FONT> public CacheEntry(StackTracePackageElement element, ClassLoader loader) {<a name="line.491"></a> |
| <FONT color="green">492</FONT> this.element = element;<a name="line.492"></a> |
| <FONT color="green">493</FONT> this.loader = loader;<a name="line.493"></a> |
| <FONT color="green">494</FONT> }<a name="line.494"></a> |
| <FONT color="green">495</FONT> }<a name="line.495"></a> |
| <FONT color="green">496</FONT> <a name="line.496"></a> |
| <FONT color="green">497</FONT> /**<a name="line.497"></a> |
| <FONT color="green">498</FONT> * Security Manager for accessing the call stack.<a name="line.498"></a> |
| <FONT color="green">499</FONT> */<a name="line.499"></a> |
| <FONT color="green">500</FONT> private static class PrivateSecurityManager extends SecurityManager {<a name="line.500"></a> |
| <FONT color="green">501</FONT> public Class[] getClasses() {<a name="line.501"></a> |
| <FONT color="green">502</FONT> return getClassContext();<a name="line.502"></a> |
| <FONT color="green">503</FONT> }<a name="line.503"></a> |
| <FONT color="green">504</FONT> }<a name="line.504"></a> |
| <FONT color="green">505</FONT> }<a name="line.505"></a> |
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| </PRE> |
| </BODY> |
| </HTML> |
