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.logging.log4j.core.appender;
018
019import org.apache.logging.log4j.core.Appender;
020import org.apache.logging.log4j.core.Core;
021import org.apache.logging.log4j.core.LogEvent;
022import org.apache.logging.log4j.core.config.plugins.Plugin;
023import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
024import org.apache.logging.log4j.core.config.plugins.PluginFactory;
025
026/**
027 * An Appender that ignores log events. Use for compatibility with version 1.2.
028 */
029@Plugin(name = NullAppender.PLUGIN_NAME, category = Core.CATEGORY_NAME, elementType = Appender.ELEMENT_TYPE, printObject = true)
030public class NullAppender extends AbstractAppender {
031
032    public static final String PLUGIN_NAME = "Null";
033
034    @PluginFactory
035    public static NullAppender createAppender(@PluginAttribute("name") final String name) {
036        return new NullAppender(name);
037    }
038
039    private NullAppender(final String name) {
040        super(name, null, null);
041        // Do nothing
042    }
043
044    @Override
045    public void append(final LogEvent event) {
046        // Do nothing
047    }
048
049}