1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.logging.log4j.core.config.plugins.visitors;
19
20 import org.apache.logging.log4j.core.LogEvent;
21 import org.apache.logging.log4j.core.config.Configuration;
22 import org.apache.logging.log4j.core.config.Node;
23 import org.apache.logging.log4j.core.config.plugins.PluginValue;
24 import org.apache.logging.log4j.util.StringBuilders;
25
26 /**
27 * PluginVisitor implementation for {@link PluginValue}.
28 */
29 public class PluginValueVisitor extends AbstractPluginVisitor<PluginValue> {
30 public PluginValueVisitor() {
31 super(PluginValue.class);
32 }
33
34 @Override
35 public Object visit(final Configuration configuration, final Node node, final LogEvent event,
36 final StringBuilder log) {
37 final String name = this.annotation.value();
38 final String rawValue = node.getValue() != null ? node.getValue() :
39 removeAttributeValue(node.getAttributes(), "value");
40 final String value = this.substitutor.replace(event, rawValue);
41 StringBuilders.appendKeyDqValue(log, name, value);
42 return value;
43 }
44 }