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1   /*
2    *  Copyright 2010 Felix Roethenbacher
3    *
4    *  Licensed under the Apache License, Version 2.0 (the "License");
5    *  you may not use this file except in compliance with the License.
6    *  You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   *  Unless required by applicable law or agreed to in writing, software
11   *  distributed under the License is distributed on an "AS IS" BASIS,
12   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   *  See the License for the specific language governing permissions and
14   *  limitations under the License.
15   */
16  package ch.syabru.nagios.broker;
17  
18  import java.io.IOException;
19  import java.io.Writer;
20  
21  /**
22   * External command interface.
23   *
24   * @author Felix Roethenbacher
25   *
26   */
27  public interface ExternalCommand {
28  
29      /**
30       * Nagios state OK.
31       */
32      int STATE_OK = 0;
33      /**
34       * Nagios state warning.
35       */
36      int STATE_WARNING = 1;
37      /**
38       * Nagios state critical.
39       */
40      int STATE_CRITICAL = 2;
41      /**
42       * Nagios state unknown.
43       */
44      int STATE_UNKNOWN = 3;
45  
46      /**
47       * Write external command to writer.
48       * @param writer Writer.
49       * @throws IOException XX.
50       */
51      void writeCommand(Writer writer) throws IOException;
52  }