/*
* Copyright (c) 2007 BUSINESS OBJECTS SOFTWARE LIMITED
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Business Objects nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* SimpleConsoleHandler.java
* Creation date: Dec 19, 2003
* By: Frank Worsley
*/
package org.openquark.util;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.logging.Formatter;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import java.util.logging.StreamHandler;
/**
* A Java log handler that outputs messages to System.out. It uses a custom formatter
* that prints only the log message if the level is INFO or less. If the level is above INFO
* it will prefix the message with the log level. Default level for this handler is FINE.
* @author Frank Worsley
*/
public final class SimpleConsoleHandler extends StreamHandler{
/**
* A log message formatter that simply outputs the message of the log record.
* Used by the GemCutter to print message to the console without any additional info.
* @author Frank Worsley
*/
private static class ConsoleFormatter extends Formatter {
/**
* @see java.util.logging.Formatter#format(java.util.logging.LogRecord)
*/
@Override
public String format(LogRecord record) {
StringBuilder sb = new StringBuilder();
// Append the log level if it is greater than warning
if (record.getLevel().intValue() >= Level.WARNING.intValue()) {
sb.append(record.getLevel().getLocalizedName() + ": ");
}
// Append the log message
sb.append(record.getMessage() + "\n");
// Append the throwable if there is one
if (record.getThrown() != null) {
try {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
record.getThrown().printStackTrace(pw);
pw.close();
sb.append(sw.toString());
} catch (Exception ex) {
sb.append("Failed to generate a stack trace for the throwable");
}
}
return sb.toString();
}
}
/**
* Default constructor for a new SimpleConsoleHandler.
*/
public SimpleConsoleHandler() {
super(System.out, new ConsoleFormatter());
setLevel(Level.FINE);
}
/** Override this to always flush the stream. */
@Override
public void publish(LogRecord record) {
super.publish(record);
flush();
}
/** Override to just flush the stream, we don't want to close System.out. */
@Override
public void close() {
flush();
}
}