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 org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.velocity.runtime.RuntimeServices;
import org.apache.velocity.runtime.log.LogChute;
/**
* Redirects Velocity's LogChute messages to commons-logging.
*
* <p>To use, first set up commons-logging, then tell Velocity to use
* this class for logging by adding the following to your velocity.properties:
*
* <code>
* runtime.log.logsystem.class = org.apache.velocity.runtime.log.CommonsLogLogChute
* </code>
* </p>
*
* <p>You may also set this property to specify what log/name Velocity's
* messages should be logged to (example below is default).
* <code>
* runtime.log.logsystem.commons.logging.name = org.apache.velocity
* </code>
* </p>
*
* @author Nathan Bubna
* @since 1.6
* @version $Id: CommonsLogLogChute.java 71982 2004-02-18 20:11:07Z nbubna $
*/
public class CommonsLogLogChute implements LogChute
{
/** Property key for specifying the name for the log instance */
public static final String LOGCHUTE_COMMONS_LOG_NAME =
"runtime.log.logsystem.commons.logging.name";
/** Default name for the commons-logging instance */
public static final String DEFAULT_LOG_NAME = "org.apache.velocity";
/** the commons-logging Log instance */
protected Log log;
/********** LogChute methods *************/
public void init(RuntimeServices rs) throws Exception
{
String name =
(String)rs.getProperty(LOGCHUTE_COMMONS_LOG_NAME);
if (name == null)
{
name = DEFAULT_LOG_NAME;
}
log = LogFactory.getLog(name);
log(LogChute.DEBUG_ID, "CommonsLogLogChute name is '" + name + "'");
}
/**
* Send a log message from Velocity.
*/
public void log(int level, String message)
{
switch (level)
{
case LogChute.WARN_ID:
log.warn(message);
break;
case LogChute.INFO_ID:
log.info(message);
break;
case LogChute.TRACE_ID:
log.trace(message);
break;
case LogChute.ERROR_ID:
log.error(message);
break;
case LogChute.DEBUG_ID:
default:
log.debug(message);
break;
}
}
/**
* Send a log message from Velocity with an error.
*/
public void log(int level, String message, Throwable t)
{
switch (level)
{
case LogChute.WARN_ID:
log.warn(message, t);
break;
case LogChute.INFO_ID:
log.info(message, t);
break;
case LogChute.TRACE_ID:
log.trace(message, t);
break;
case LogChute.ERROR_ID:
log.error(message, t);
break;
case LogChute.DEBUG_ID:
default:
log.debug(message, t);
break;
}
}
/**
* Checks whether the specified log level is enabled.
*/
public boolean isLevelEnabled(int level)
{
switch (level)
{
case LogChute.DEBUG_ID:
return log.isDebugEnabled();
case LogChute.INFO_ID:
return log.isInfoEnabled();
case LogChute.TRACE_ID:
return log.isTraceEnabled();
case LogChute.WARN_ID:
return log.isWarnEnabled();
case LogChute.ERROR_ID:
return log.isErrorEnabled();
default:
return true;
}
}
}
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