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 java.util.Map; 021 022 import org.apache.logging.log4j.core.LogEvent; 023 import org.apache.logging.log4j.core.config.Configuration; 024 import org.apache.logging.log4j.core.config.Node; 025 import org.apache.logging.log4j.core.config.plugins.PluginBuilderAttribute; 026 import org.apache.logging.log4j.core.util.NameUtil; 027 028 /** 029 * PluginVisitor for PluginBuilderAttribute. If {@code null} is returned for the 030 * {@link #visit(org.apache.logging.log4j.core.config.Configuration, org.apache.logging.log4j.core.config.Node, org.apache.logging.log4j.core.LogEvent, StringBuilder)} 031 * method, then the default value of the field should remain untouched. 032 * 033 * @see org.apache.logging.log4j.core.config.plugins.util.PluginBuilder 034 */ 035 public class PluginBuilderAttributeVisitor extends AbstractPluginVisitor<PluginBuilderAttribute> { 036 037 public PluginBuilderAttributeVisitor() { 038 super(PluginBuilderAttribute.class); 039 } 040 041 @Override 042 public Object visit(final Configuration configuration, final Node node, final LogEvent event, 043 final StringBuilder log) { 044 final String overridden = this.annotation.value(); 045 final String name = overridden.isEmpty() ? this.member.getName() : overridden; 046 final Map<String, String> attributes = node.getAttributes(); 047 final String rawValue = removeAttributeValue(attributes, name, this.aliases); 048 final String replacedValue = this.substitutor.replace(event, rawValue); 049 final Object value = convert(replacedValue, null); 050 final Object debugValue = this.annotation.sensitive() ? NameUtil.md5(value + this.getClass().getName()) : value; 051 log.append(name).append("=\"").append(debugValue).append('"'); 052 return value; 053 } 054 }