/*
* 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.
*/
package org.apache.avalon.excalibur.logger.factory;
import org.apache.avalon.excalibur.logger.LogTargetFactory;
import org.apache.avalon.excalibur.logger.LogTargetFactoryManageable;
import org.apache.avalon.excalibur.logger.LogTargetFactoryManager;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.log.LogTarget;
import org.apache.log.Priority;
import org.apache.log.output.PriorityFilteringTarget;
/**
* PriorityFilterTargetFactory class.
*
* This factory creates LogTargets with a wrapped PriorityFilteringTarget
* around it:
*
* <pre>
*
* <priority-filter id="target-id" log-level="ERROR">
* <any-target-definition/>
* ...
* <any-target-definition/>
* </priority-filter>
*
* </pre>
* <p>
* This factory creates a PriorityFilteringTarget object with a logging Priority set
* to the value of the log-level attribute (which defaults to INFO if absent).
* The LogTarget to filter is described in child elements of the configuration (in
* the sample above named as <any-target-definition/>).
* </p>
*
* @author <a href="mailto:dev@avalon.apache.org">Avalon Development Team</a>
* @version CVS $Revision: 1.10 $ $Date: 2004/03/13 03:48:55 $
* @since 4.0
*/
public final class PriorityFilterTargetFactory
extends AbstractTargetFactory
implements LogTargetFactoryManageable
{
/** The LogTargetFactoryManager */
protected LogTargetFactoryManager m_logTargetFactoryManager;
/**
* create a LogTarget based on a Configuration
*/
public final LogTarget createTarget( final Configuration configuration )
throws ConfigurationException
{
final String loglevel = configuration.getAttribute( "log-level", "INFO" );
getLogger().debug( "loglevel is " + loglevel );
final boolean closeWrappedTargets =
configuration.getAttributeAsBoolean( "close-wrapped-targets", true );
final PriorityFilteringTarget filter = new PriorityFilteringTarget(
Priority.getPriorityForName( loglevel ), closeWrappedTargets );
final Configuration[] configs = configuration.getChildren();
for( int i = 0; i < configs.length; i++ )
{
final LogTargetFactory factory =
m_logTargetFactoryManager.getLogTargetFactory( configs[ i ].getName() );
if( null == factory )
{
throw new ConfigurationException( "Unknown target type '" + configs[ i ].getName()
+ "' at " + configs[ i ].getLocation() );
}
getLogger().debug(
"creating target " + configs[ i ].getName() + ": " + configs[ i ].toString() );
final LogTarget logtarget = factory.createTarget( configs[ i ] );
filter.addTarget( logtarget );
}
return filter;
}
/**
* get the LogTargetFactoryManager
*/
public final void setLogTargetFactoryManager( LogTargetFactoryManager logTargetFactoryManager )
{
m_logTargetFactoryManager = logTargetFactoryManager;
}
}