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.config.composite;
018
019import org.apache.logging.log4j.core.config.AbstractConfiguration;
020import org.apache.logging.log4j.core.config.Node;
021import org.apache.logging.log4j.core.config.plugins.util.PluginManager;
022
023/**
024 * Merges two configurations together
025 */
026public interface MergeStrategy {
027
028    /**
029     * Merge the root node properties into the configuration.
030     * @param rootNode The composite root node.
031     * @param configuration The configuration to merge.
032     */
033    void mergeRootProperties(Node rootNode, AbstractConfiguration configuration);
034
035    /**
036     * Merge the soure node tree into the target node tree.
037     * @param target The target Node tree.
038     * @param source The source Node tree.
039     */
040    void mergConfigurations(Node target, Node source, PluginManager pluginManager);
041}