/*
* Copyright (c) 1998-2010 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.log;
import com.caucho.vfs.StringWriter;
import com.caucho.vfs.WriteStream;
import java.util.logging.Formatter;
import java.util.logging.LogRecord;
/**
* A simple formatter that handles localization, substitution of
* parameters, and the inclusion of an exception stack trace if applicable.
*/
public class MessageFormatter extends Formatter {
public String format(LogRecord record)
{
return formatMessage(record);
}
/**
* The "formatted" log message, after localization, substitution of
* parameters, and the inclusion of an exception stack trace if applicable.
* <p>
* During formatting, if the source logger has a localization
* ResourceBundle and if that ResourceBundle has an entry for
* this message string, then the message string is replaced
* with the localized value.
* <p>
* If the message has parameters, java.text.MessageFormat is used to format
* the message with the parameters.
* <p>
* If the log record has an associated exception, the stack trace is
* appended to the log message.
*
* @see java.text.MessageFormat
* @see java.lang.Throwable.printStackTrace()
*/
public String formatMessage(LogRecord record)
{
String message = super.formatMessage(record);
Throwable thrown = record.getThrown();
try {
if (thrown != null) {
StringWriter sw = new StringWriter();
WriteStream os = sw.openWrite();
if (message != null &&
! message.equals(thrown.toString()) &&
! message.equals(thrown.getMessage()))
os.println(message);
Throwable rootExn = thrown;
// server/023g
/*
for (;
rootExn != null && rootExn.getCause() != null;
rootExn = rootExn.getCause()) {
}
*/
rootExn.printStackTrace(os.getPrintWriter());
message = sw.getString();
}
} catch (Throwable e) {
e.printStackTrace();
}
return message;
}
}