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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.shiro.config.event;
20  
21  import org.apache.shiro.event.Subscribe;
22  import org.slf4j.Logger;
23  import org.slf4j.LoggerFactory;
24  
25  /**
26   * A stock bean listener implementation that logs all BeanEvents as TRACE log statements.
27   *
28   * @since 1.3
29   */
30  public class LoggingBeanEventListener {
31  
32      private static final Logger logger = LoggerFactory.getLogger(LoggingBeanEventListener.class);
33      private static final String SUFFIX = BeanEvent.class.getSimpleName();
34  
35      @Subscribe
36      public void onEvent(BeanEvent e) {
37          String className = e.getClass().getSimpleName();
38          int i = className.lastIndexOf(SUFFIX);
39          String subclassPrefix = i > 0 ? className.substring(0, i) : className;
40          logger.trace("{} bean '{}' [{}]", new Object[]{subclassPrefix, e.getBeanName(), e.getBean()});
41      }
42  }