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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.io.input;
18  
19  /**
20   * {@link TailerListener} Adapter.
21   *
22   * @since 2.0
23   */
24  public class TailerListenerAdapter implements TailerListener {
25  
26      /**
27       * Called each time the Tailer reaches the end of the file.
28       *
29       * <b>Note:</b> this is called from the tailer thread.
30       *
31       * Note: a future version of commons-io will pull this method up to the TailerListener interface,
32       * for now clients must subclass this class to use this feature.
33       *
34       * @since 2.5
35       */
36      public void endOfFileReached() {
37          // noop
38      }
39  
40      /**
41       * This method is called if the tailed file is not found.
42       */
43      @Override
44      public void fileNotFound() {
45          // noop
46      }
47  
48      /**
49       * Called if a file rotation is detected.
50       *
51       * This method is called before the file is reopened, and fileNotFound may
52       * be called if the new file has not yet been created.
53       */
54      @Override
55      public void fileRotated() {
56          // noop
57      }
58  
59      /**
60       * Handles an Exception .
61       * @param ex the exception.
62       */
63      @Override
64      public void handle(final Exception ex) {
65          // noop
66      }
67  
68      /**
69       * Handles a line from a Tailer.
70       * @param line the line.
71       */
72      @Override
73      public void handle(final String line) {
74          // noop
75      }
76  
77      /**
78       * The tailer will call this method during construction,
79       * giving the listener a method of stopping the tailer.
80       * @param tailer the tailer.
81       */
82      @Override
83      public void init(final Tailer tailer) {
84          // noop
85      }
86  }