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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 chapters.layouts;
15  
16  import ch.qos.logback.classic.pattern.ClassicConverter;
17  import ch.qos.logback.classic.spi.ILoggingEvent;
18  
19  public class MySampleConverter extends ClassicConverter {
20  
21      long start = System.nanoTime();
22  
23      @Override
24      public String convert(ILoggingEvent event) {
25          long nowInNanos = System.nanoTime();
26          return Long.toString(nowInNanos - start);
27      }
28  }