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1   /**
2    * Copyright (c) 2004-2011 QOS.ch
3    * All rights reserved.
4    *
5    * Permission is hereby granted, free  of charge, to any person obtaining
6    * a  copy  of this  software  and  associated  documentation files  (the
7    * "Software"), to  deal in  the Software without  restriction, including
8    * without limitation  the rights to  use, copy, modify,  merge, publish,
9    * distribute,  sublicense, and/or sell  copies of  the Software,  and to
10   * permit persons to whom the Software  is furnished to do so, subject to
11   * the following conditions:
12   *
13   * The  above  copyright  notice  and  this permission  notice  shall  be
14   * included in all copies or substantial portions of the Software.
15   *
16   * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
17   * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
18   * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
19   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21   * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
22   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23   *
24   */
25  package org.slf4j.ext;
26  
27  import org.slf4j.LoggerFactory;
28  import org.slf4j.Marker;
29  import org.slf4j.MarkerFactory;
30  import org.slf4j.spi.LocationAwareLogger;
31  
32  /**
33   * Simple Logger used to log events. All events are directed to a logger named "EventLogger"
34   * with a level of INFO and with an Event marker.
35   *
36   * @author Ralph Goers
37   */
38  public class EventLogger {
39  
40    private static final String FQCN = EventLogger.class.getName();
41  
42    static Marker EVENT_MARKER = MarkerFactory.getMarker("EVENT");
43  
44    private static LoggerWrapper eventLogger =
45        new LoggerWrapper(LoggerFactory.getLogger("EventLogger"), FQCN);
46  
47    /**
48     * There can only be a single EventLogger.
49     */
50    private EventLogger() {
51    }
52  
53    /**
54     * Logs the event.
55     *
56     * @param data The EventData.
57     */
58    public static void logEvent(EventData data) {
59      if (eventLogger.instanceofLAL) {
60        ((LocationAwareLogger) eventLogger.logger).log(EVENT_MARKER, FQCN,
61            LocationAwareLogger.INFO_INT, data.toXML(), new Object[] {data}, null);
62      } else {
63        eventLogger.logger.info(EVENT_MARKER, data.toXML(), data);
64      }
65    }
66  }