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 */ 017 018 package org.apache.logging.log4j.core.config.plugins.visitors; 019 020 import org.apache.logging.log4j.core.LogEvent; 021 import org.apache.logging.log4j.core.config.Configuration; 022 import org.apache.logging.log4j.core.config.Node; 023 import org.apache.logging.log4j.core.config.plugins.PluginValue; 024 025 /** 026 * PluginVisitor implementation for {@link PluginValue}. 027 */ 028 public class PluginValueVisitor extends AbstractPluginVisitor<PluginValue> { 029 public PluginValueVisitor() { 030 super(PluginValue.class); 031 } 032 033 @Override 034 public Object visit(final Configuration configuration, final Node node, final LogEvent event, 035 final StringBuilder log) { 036 final String name = this.annotation.value(); 037 final String rawValue = node.getValue() != null ? node.getValue() : 038 removeAttributeValue(node.getAttributes(), "value"); 039 final String value = this.substitutor.replace(event, rawValue); 040 log.append(name).append("=\"").append(value).append('"'); 041 return value; 042 } 043 }