/*
    * 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.logging.log4j.core.appender;
  
  import org.apache.logging.log4j.core.Appender;
  import org.apache.logging.log4j.core.Core;
  import org.apache.logging.log4j.core.LogEvent;
  import org.apache.logging.log4j.core.config.Property;
  import org.apache.logging.log4j.core.config.plugins.Plugin;
  import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
  import org.apache.logging.log4j.core.config.plugins.PluginFactory;
  
  /**
   * An Appender that ignores log events. Use for compatibility with version 1.2
   * and handy for composing a {@link ScriptAppenderSelector}.
   */
  @Plugin(name = NullAppender.PLUGIN_NAME, category = Core.CATEGORY_NAME, elementType = Appender.ELEMENT_TYPE, printObject = true)
  public class NullAppender extends AbstractAppender {
  
  	public static final String PLUGIN_NAME = "Null";
  
  	@PluginFactory
  	public static NullAppender createAppender(
  			@PluginAttribute(value = "name", defaultString = "null") final String name) {
  		return new NullAppender(name);
  	}
  
  	private NullAppender(final String name) {
  		super(name, null, null, true, Property.EMPTY_ARRAY);
  	}
  
  	@Override
  	public void append(final LogEvent event) {
  		// Do nothing
  	}
  
  }