Index: lams_central/src/java/org/lamsfoundation/lams/web/ReportWddxStructureServlet.java =================================================================== diff -u --- lams_central/src/java/org/lamsfoundation/lams/web/ReportWddxStructureServlet.java (revision 0) +++ lams_central/src/java/org/lamsfoundation/lams/web/ReportWddxStructureServlet.java (revision 0074cde340ff66da3b02e79263385e7010d81544) @@ -0,0 +1,144 @@ +/**************************************************************** + * Copyright (C) 2005 LAMS Foundation (http://lamsfoundation.org) + * ============================================================= + * License Information: http://lamsfoundation.org/licensing/lams/2.0/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2.0 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * http://www.gnu.org/licenses/gpl.txt + * **************************************************************** + */ +/* $Id$ */ +package org.lamsfoundation.lams.web; + +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.OutputStream; +import java.util.Iterator; +import java.util.Map; +import java.util.Vector; + +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpSession; + +import org.apache.log4j.Logger; +import org.lamsfoundation.lams.usermanagement.dto.UserDTO; +import org.lamsfoundation.lams.util.FileUtil; +import org.lamsfoundation.lams.util.wddx.WDDXProcessor; +import org.lamsfoundation.lams.web.servlet.AbstractStoreWDDXPacketServlet; +import org.lamsfoundation.lams.web.session.SessionManager; +import org.lamsfoundation.lams.web.util.AttributeNames; + + +/** + * Write out the contents of WDDX packet as converted to Java objects by deserialisation. + * The report files are written to the same directory as the crash dumps. + * + * @author Fiona Malikoff + * + * @web:servlet name="dumpWDDX" + * @web:servlet-mapping url-pattern="/dumpWDDX" + + */ +public class ReportWddxStructureServlet extends AbstractStoreWDDXPacketServlet { + + private static final long serialVersionUID = 1993150655543872349L; + private static Logger log = Logger.getLogger(ReportWddxStructureServlet.class); + + protected String process(String wddxPacket, HttpServletRequest request) + throws Exception + { + HttpSession ss = SessionManager.getSession(); + UserDTO user = ss !=null ? (UserDTO) ss.getAttribute(AttributeNames.USER) : null; + if ( user == null ) { + String error = "ReportWddxStructureServlet: Attempt to dump file by someone not logged in."; + log.error(error); + throw new Exception(error); + } + + String id = "DUMP" + user.getLogin(); + String filename = null; + try { + // attempt to get the special Flash flag which groups packets together - not + // all the crash dump data can come in one packet as Flash can't cope with large + // packets. + Object packet = (Object)WDDXProcessor.deserialize(wddxPacket); + byte[] dump = convertJavaToDump(packet); + filename = FileUtil.createDumpFile(dump, id, "txt"); + } catch ( Exception e ) { + String error = "ReportWddxStructureServlet: Unable to serialise packet."; + log.error(error,e); + throw e; + } + + return "

Dump file is "+filename+"

"; + } + + private byte[] convertJavaToDump(Object packet) throws IOException { + ByteArrayOutputStream out = new ByteArrayOutputStream(); + output(packet, out, ""); + return out.toByteArray(); + } + + private void output(Object obj, OutputStream out, String indent) throws IOException { + if ( obj != null ) { + if ( obj instanceof Map) { + outputMap((Map)obj,out,indent); + } else if ( obj instanceof Vector ) { + outputVector((Vector)obj, out, indent); + } else { + out.write(obj.toString().getBytes()); + } + } + } + + private void outputMap(Map map, OutputStream out, String indent) throws IOException { + byte[] indentBytes = indent.getBytes(); + out.write(indentBytes); + out.write("Map{\n".getBytes()); + String newIndent = indent+" "; + byte[] newIndentBytes = newIndent.getBytes(); + Iterator iter = map.entrySet().iterator(); + while ( iter.hasNext() ) { + out.write(newIndentBytes); + Map.Entry entry = (Map.Entry) iter.next(); + String key = (String) entry.getKey(); + out.write("[".getBytes()); + out.write(key.getBytes()); + out.write("=".getBytes()); + output(entry.getValue(), out, newIndent); + out.write( "]\n".getBytes()); + } + out.write(indentBytes); + out.write("}\n".getBytes()); + } + + private void outputVector(Vector vector, OutputStream out, String indent) throws IOException { + byte[] indentBytes = indent.getBytes(); + out.write("Vector{\n".getBytes()); + String newIndent = indent+" "; + Iterator iter = vector.iterator(); + while ( iter.hasNext() ) { + output(iter.next(), out, newIndent); + out.write("\n".getBytes()); + } + out.write(indentBytes); + out.write("}".getBytes()); + } + + protected String getMessageKey(String packet, HttpServletRequest request) { + return("ReportWddxStructureServlet"); + } +} \ No newline at end of file