/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package chapters.filters;
  
  import org.slf4j.Marker;
  import org.slf4j.MarkerFactory;
  
  import ch.qos.logback.classic.Level;
  import ch.qos.logback.classic.Logger;
  import ch.qos.logback.classic.turbo.TurboFilter;
  import ch.qos.logback.core.spi.FilterReply;
  
  public class SampleTurboFilter extends TurboFilter {
  
      String marker;
      Marker markerToAccept;
  
      @Override
      public FilterReply decide(Marker marker, Logger logger, Level level, String format, Object[] params, Throwable t) {
  
          if (!isStarted()) {
              return FilterReply.NEUTRAL;
          }
  
          if ((markerToAccept.equals(marker))) {
              return FilterReply.ACCEPT;
          } else {
              return FilterReply.NEUTRAL;
          }
      }
  
      public String getMarker() {
          return marker;
      }
  
      public void setMarker(String markerStr) {
          this.marker = markerStr;
      }
  
      @Override
      public void start() {
          if (marker != null && marker.trim().length() > 0) {
              markerToAccept = MarkerFactory.getMarker(marker);
              super.start();
          }
      }
  }