1 /**
2 * Logback: the reliable, generic, fast and flexible logging framework.
3 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
4 *
5 * This program and the accompanying materials are dual-licensed under
6 * either the terms of the Eclipse Public License v1.0 as published by
7 * the Eclipse Foundation
8 *
9 * or (per the licensee's choosing)
10 *
11 * under the terms of the GNU Lesser General Public License version 2.1
12 * as published by the Free Software Foundation.
13 */
14 package ch.qos.logback.classic.pattern;
15
16 import java.util.List;
17
18 import org.slf4j.Marker;
19
20 import ch.qos.logback.classic.spi.ILoggingEvent;
21
22 /**
23 * Return the event's marker value(s).
24 *
25 * @author Sébastien Pennec
26 */
27 public class MarkerConverter extends ClassicConverter {
28
29 private static String EMPTY = "";
30
31 public String convert(ILoggingEvent le) {
32 List<Marker> markers = le.getMarkerList();
33 if (markers == null || markers.isEmpty()) {
34 return EMPTY;
35 }
36 int size = markers.size();
37
38 if (size == 1)
39 return markers.get(0).toString();
40
41 StringBuffer buf = new StringBuffer(32);
42 for (int i = 0; i < size; i++) {
43 if (i != 0)
44 buf.append(' ');
45 Marker m = markers.get(i);
46 buf.append(m.toString());
47 }
48 return buf.toString();
49
50 }
51
52 }