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.commons.logging.log4j.log4j12;
19
20 import java.util.List;
21
22 import org.apache.commons.logging.log4j.StandardTests;
23 import org.apache.log4j.AppenderSkeleton;
24 import org.apache.log4j.spi.LoggingEvent;
25
26 /**
27 * A custom implementation of {@code org.apache.log4j.Appender} which
28 * converts the Log4j-specific log event record into a representation that
29 * doesn't have a dependency on log4j and stores that new representation into
30 * an external list.
31 */
32
33 public class TestAppender extends AppenderSkeleton {
34
35 // The set of logged events for this appender
36 private final List events;
37
38 /**
39 * Constructs a new instance.
40 */
41 public TestAppender(final List logEvents) {
42 events = logEvents;
43 }
44
45 @Override
46 protected void append(final LoggingEvent event) {
47 final StandardTests.LogEvent lev = new StandardTests.LogEvent();
48
49 lev.level = event.getLevel().toString();
50
51 if (event.getMessage() == null) {
52 lev.msg = null;
53 } else {
54 lev.msg = event.getMessage().toString();
55 }
56
57 if (event.getThrowableInformation() == null) {
58 lev.throwable = null;
59 } else {
60 lev.throwable = event.getThrowableInformation().getThrowable();
61 }
62
63 events.add(lev);
64 }
65
66 @Override
67 public void close() {
68 }
69
70 @Override
71 public boolean requiresLayout() {
72 return false;
73 }
74
75 }