01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: * Free SoftwareFoundation, Inc.
23: * 59 Temple Place, Suite 330
24: * Boston, MA 02111-1307 USA
25: *
26: * @author Scott Ferguson
27: */
28:
29: package com.caucho.resources;
30:
31: import com.caucho.config.ConfigException;
32: import com.caucho.log.Log;
33: import com.caucho.util.L10N;
34:
35: import javax.annotation.PostConstruct;
36: import javax.annotation.Resource;
37: import java.util.concurrent.Executor;
38: import java.util.logging.Logger;
39:
40: /**
41: * The task resource starts a background task on initialization.
42: * intervals.
43: */
44: public class TaskResource {
45: private static final L10N L = new L10N(TaskResource.class);
46: private static final Logger log = Logger
47: .getLogger(TaskResource.class.getName());
48:
49: @Resource
50: private Executor _executor;
51:
52: private Runnable _work;
53:
54: /**
55: * Sets the work task.
56: */
57: public void setWork(Runnable work) {
58: _work = work;
59: }
60:
61: /**
62: * Initialization.
63: */
64: @PostConstruct
65: public void init() throws ConfigException {
66: if (_work == null)
67: throw new ConfigException(L
68: .l("TaskResource needs a <work> task."));
69: }
70:
71: /**
72: * Starting.
73: */
74: public void start() {
75: _executor.execute(_work);
76: }
77: }
|