| /* |
| * 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.config.plugins.visitors; |
| |
| import org.apache.logging.log4j.core.LogEvent; |
| import org.apache.logging.log4j.core.config.Configuration; |
| import org.apache.logging.log4j.core.config.Node; |
| import org.apache.logging.log4j.core.config.plugins.PluginValue; |
| import org.apache.logging.log4j.util.StringBuilders; |
| import org.apache.logging.log4j.util.Strings; |
| |
| /** |
| * PluginVisitor implementation for {@link PluginValue}. |
| */ |
| public class PluginValueVisitor extends AbstractPluginVisitor<PluginValue> { |
| public PluginValueVisitor() { |
| super(PluginValue.class); |
| } |
| |
| @Override |
| public Object visit(final Configuration configuration, final Node node, final LogEvent event, |
| final StringBuilder log) { |
| final String name = this.annotation.value(); |
| final String elementValue = node.getValue(); |
| final String attributeValue = node.getAttributes().get("value"); |
| String rawValue = null; // if neither is specified, return null (LOG4J2-1313) |
| if (Strings.isNotEmpty(elementValue)) { |
| if (Strings.isNotEmpty(attributeValue)) { |
| LOGGER.error("Configuration contains {} with both attribute value ({}) AND element" + |
| " value ({}). Please specify only one value. Using the element value.", |
| node.getName(), attributeValue, elementValue); |
| } |
| rawValue = elementValue; |
| } else { |
| rawValue = removeAttributeValue(node.getAttributes(), "value"); |
| } |
| final String value = this.substitutor.replace(event, rawValue); |
| StringBuilders.appendKeyDqValue(log, name, value); |
| return value; |
| } |
| } |