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yacy_search_server/source/net/yacy/kelondro/logging/SimpleLogFormatter.java

111 lines
4.0 KiB

//SimpleLogFormatter.java
//-------------------------------------
//part of YACY
//(C) by Michael Peter Christen; mc@yacy.net
//first published on http://www.anomic.de
//Frankfurt, Germany, 2004
//
//This file is contributed by Martin Thelian
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
//This program 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.
//
//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
package net.yacy.kelondro.logging;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.text.FieldPosition;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.logging.LogRecord;
import java.util.logging.SimpleFormatter;
public final class SimpleLogFormatter extends SimpleFormatter {
private final Date date = new Date();
private final FieldPosition position = new FieldPosition(0);
// e.g. 2005/05/25 11:22:53
private final SimpleDateFormat formatter = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss", Locale.US);
private final StringBuffer buffer = new StringBuffer(80);
public SimpleLogFormatter() {
super();
}
@Override
public final synchronized String format(final LogRecord record) {
final StringBuffer stringBuffer = this.buffer;
stringBuffer.setLength(0);
// adding the loglevel
final int logLevel = record.getLevel().intValue();
if (logLevel == Log.LOGLEVEL_SEVERE)
this.buffer.append(Log.LOGTOKEN_SEVERE);
else if (logLevel == Log.LOGLEVEL_WARNING)
this.buffer.append(Log.LOGTOKEN_WARNING);
else if (logLevel == Log.LOGLEVEL_CONFIG)
this.buffer.append(Log.LOGTOKEN_CONFIG);
else if (logLevel == Log.LOGLEVEL_INFO)
this.buffer.append(Log.LOGTOKEN_INFO);
else if (logLevel == Log.LOGLEVEL_FINE)
this.buffer.append(Log.LOGTOKEN_FINE);
else if (logLevel == Log.LOGLEVEL_FINER)
this.buffer.append(Log.LOGTOKEN_FINER);
else if (logLevel == Log.LOGLEVEL_FINEST)
this.buffer.append(Log.LOGTOKEN_FINEST);
else
this.buffer.append(Log.LOGTOKEN_FINE);
this.buffer.append(' ');
// adding the logging date
this.date.setTime(record.getMillis());
this.position.setBeginIndex(0);
this.formatter.format(this.date, this.buffer, this.position);
// adding the logger name
stringBuffer.append(' ');
stringBuffer.append(record.getLoggerName());
// adding the logging message
stringBuffer.append(' ');
stringBuffer.append(formatMessage(record));
// adding the stack trace if available
stringBuffer.append(System.getProperty("line.separator"));
if (record.getThrown() != null) {
StringWriter writer = null;
try {
writer = new StringWriter();
final PrintWriter printer = new PrintWriter(writer);
record.getThrown().printStackTrace(printer);
stringBuffer.append(writer.toString());
} catch (final Exception e) {
stringBuffer.append("Failed to get stack trace: ").append(e.getMessage());
} finally {
if (writer != null) try {writer.close();} catch (final Exception ex) {}
}
}
return stringBuffer.toString();
}
}