package org.apache.velocity.runtime.log;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.velocity.runtime.RuntimeServices;
/**
* Implementation of a simple java.util.logging LogChute.
*
* @author <a href="mailto:[email protected]>Nathan Bubna</a>
* @version $Id: JdkLogChute.java 703541 2008-10-10 18:09:42Z nbubna $
* @since 1.5
*/
public class JdkLogChute implements LogChute
{
/** Property key for specifying the name for the logger instance */
public static final String RUNTIME_LOG_JDK_LOGGER =
"runtime.log.logsystem.jdk.logger";
public static final String RUNTIME_LOG_JDK_LOGGER_LEVEL =
"runtime.log.logsystem.jdk.logger.level";
/** Default name for the JDK logger instance */
public static final String DEFAULT_LOG_NAME = "org.apache.velocity";
/**
*
*/
protected Logger logger = null;
/**
* @see org.apache.velocity.runtime.log.LogChute#init(org.apache.velocity.runtime.RuntimeServices)
*/
public void init(RuntimeServices rs)
{
String name = (String)rs.getProperty(RUNTIME_LOG_JDK_LOGGER);
if (name == null)
{
name = DEFAULT_LOG_NAME;
}
logger = Logger.getLogger(name);
/* get and set specified level for this logger, */
String lvl = rs.getString(RUNTIME_LOG_JDK_LOGGER_LEVEL);
if (lvl != null)
{
Level level = Level.parse(lvl);
logger.setLevel(level);
log(LogChute.DEBUG_ID, "JdkLogChute will use logger '"
+name+'\''+" at level '"+level+'\'');
}
}
/**
* Returns the java.util.logging.Level that matches
* to the specified LogChute level.
* @param level
* @return The current log level of the JDK Logger.
*/
protected Level getJdkLevel(int level)
{
switch (level)
{
case LogChute.WARN_ID:
return Level.WARNING;
case LogChute.INFO_ID:
return Level.INFO;
case LogChute.DEBUG_ID:
return Level.FINE;
case LogChute.TRACE_ID:
return Level.FINEST;
case LogChute.ERROR_ID:
return Level.SEVERE;
default:
return Level.FINER;
}
}
/**
* Logs messages
*
* @param level severity level
* @param message complete error message
*/
public void log(int level, String message)
{
log(level, message, null);
}
/**
* Send a log message from Velocity along with an exception or error
* @param level
* @param message
* @param t
*/
public void log(int level, String message, Throwable t)
{
Level jdkLevel = getJdkLevel(level);
if (t == null)
{
logger.log(jdkLevel, message);
}
else
{
logger.log(jdkLevel, message, t);
}
}
/**
* @see org.apache.velocity.runtime.log.LogChute#isLevelEnabled(int)
*/
public boolean isLevelEnabled(int level)
{
Level jdkLevel = getJdkLevel(level);
return logger.isLoggable(jdkLevel);
}
}
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