File D:\maven-qcr-plugin-testsunitaires\qcr4java\jenkins-master\target\site\qc\core\src\main\java\hudson\triggers\SafeTimerTask.java.html

1 /*
2 * The MIT License
3 *
4 * Copyright (c) 2004-2009, Sun Microsystems, Inc., Kohsuke Kawaguchi
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 package hudson.triggers;
25
26 import org.acegisecurity.context.SecurityContext;
27 import org.acegisecurity.context.SecurityContextHolder;
28
29 import java.util.Timer;
30 import java.util.TimerTask;
31 import java.util.logging.Logger;
32 import java.util.logging.Level;
33
34 import hudson.security.ACL;
35
36 /**
37 * {@link Timer} wrapper so that a fatal error in {@link TimerTask}
38 * won't terminate the timer.
39 *
40 * <p>
41 * {@link Trigger#timer} is a shared timer instance that can be used inside Hudson to
42 * schedule a recurring work.
43 *
44 * @author Kohsuke Kawaguchi
45 * @since 1.124
46 * @see Trigger#timer
47 */
48 public abstract class SafeTimerTask extends TimerTask {
49 public final void run() {
50 // background activity gets system credential,
51 // just like executors get it.
52 SecurityContext oldContext = ACL.impersonate(ACL.SYSTEM);
53 try {
54 doRun();
55 } catch(Throwable t) {
56 LOGGER.log(Level.SEVERE, "Timer task "+this+" failed",t);
57 } finally {
58 SecurityContextHolder.setContext(oldContext);
59 }
60 }
61
62 protected abstract void doRun() throws Exception;
63
64 private static final Logger LOGGER = Logger.getLogger(SafeTimerTask.class.getName());
65 }
66