001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache license, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the license for the specific language governing permissions and
015 * limitations under the license.
016 */
017package org.apache.log4j.builders.appender;
018
019import org.apache.log4j.Appender;
020import org.apache.log4j.bridge.AppenderWrapper;
021import org.apache.log4j.config.PropertiesConfiguration;
022import org.apache.log4j.xml.XmlConfiguration;
023import org.apache.logging.log4j.Logger;
024import org.apache.logging.log4j.core.appender.NullAppender;
025import org.apache.logging.log4j.core.config.plugins.Plugin;
026import org.apache.logging.log4j.status.StatusLogger;
027import org.w3c.dom.Element;
028
029import java.util.Properties;
030
031import static org.apache.log4j.builders.BuilderManager.CATEGORY;
032
033/**
034 * Build a Null Appender
035 */
036@Plugin(name = "org.apache.log4j.varia.NullAppender", category = CATEGORY)
037public class NullAppenderBuilder implements AppenderBuilder {
038
039    private static final Logger LOGGER = StatusLogger.getLogger();
040
041    @Override
042    public Appender parseAppender(Element appenderElement, XmlConfiguration config) {
043        String name = appenderElement.getAttribute("name");
044        return new AppenderWrapper(NullAppender.createAppender(name));
045    }
046
047
048    @Override
049    public Appender parseAppender(final String name, final String appenderPrefix, final String layoutPrefix,
050            final String filterPrefix, final Properties props, final PropertiesConfiguration configuration) {
051        return new AppenderWrapper(NullAppender.createAppender(name));
052    }
053}