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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 = new LoggerWrapper(LoggerFactory.getLogger("EventLogger"), FQCN);
    45
    46      /**
    47       * There can only be a single EventLogger.
    48       */
    49      private EventLogger() {
    50      }
    51
    52      /**
    53       * Logs the event.
    54       *
    55       * @param data The EventData.
    56       */
    57      public static void logEvent(EventData data) {
    58          if (eventLogger.instanceofLAL) {
    59              ((LocationAwareLogger) eventLogger.logger).log(EVENT_MARKER, FQCN, LocationAwareLogger.INFO_INT, data.toXML(), new Object[] { data }, null);
    60          } else {
    61              eventLogger.logger.info(EVENT_MARKER, data.toXML(), data);
    62          }
    63      }
    64  }