001/* 002 * (C) Copyright 2006-2010 Nuxeo SAS (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * bstefanescu 016 */ 017package org.nuxeo.shell.cmds; 018 019import java.io.PrintWriter; 020import java.io.StringWriter; 021 022import org.nuxeo.shell.Command; 023import org.nuxeo.shell.Context; 024import org.nuxeo.shell.Shell; 025 026/** 027 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 028 */ 029@Command(name = "trace", help = "Print the last error stack trace if any") 030public class Trace implements Runnable { 031 032 @Context 033 protected Shell shell; 034 035 public void run() { 036 Throwable t = (Throwable) shell.getProperty("last.error"); 037 if (t != null) { 038 shell.getConsole().println(); 039 shell.getConsole().println(getStackTrace(t)); 040 } else { 041 shell.getConsole().println("No stack trace to print"); 042 } 043 } 044 045 public static String getStackTrace(Throwable t) { 046 StringWriter sw = new StringWriter(); 047 PrintWriter pw = new PrintWriter(sw); 048 t.printStackTrace(pw); 049 if (t.getCause() != null && t.getCause().getClass().getName().endsWith(".RemoteException")) { 050 pw.println("Dumping remote stack trace:"); 051 t.getCause().printStackTrace(pw); 052 } 053 pw.close(); 054 return sw.getBuffer().toString(); 055 } 056}