Commit | Line | Data |
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c9837b5e FT |
1 | package dolda.jsvc; |
2 | ||
3 | import java.util.logging.*; | |
4 | import java.lang.reflect.*; | |
5 | ||
6 | public class ThreadContext extends ThreadGroup { | |
7 | private Logger logger = Logger.getLogger("dolda.jsvc.context"); | |
8 | private ThreadGroup workers; | |
9 | private long reqs = 0; | |
10 | public final Responder root; | |
11 | ||
12 | public ThreadContext(ThreadGroup parent, String name, Class<?> bootclass) { | |
13 | super((parent == null)?(Thread.currentThread().getThreadGroup()):parent, name); | |
14 | workers = new ThreadGroup(this, "Worker threads") { | |
15 | public void uncaughtException(Thread t, Throwable e) { | |
16 | logger.log(Level.SEVERE, "Worker thread terminated with an uncaught exception", e); | |
17 | } | |
18 | }; | |
19 | root = bootstrap(bootclass); | |
20 | } | |
21 | ||
22 | public void uncaughtException(Thread t, Throwable e) { | |
23 | logger.log(Level.SEVERE, "Service thread " + t.toString() + " terminated with an uncaught exception", e); | |
24 | } | |
25 | ||
26 | public void shutdown() { | |
27 | interrupt(); | |
28 | if(root instanceof ContextResponder) | |
29 | ((ContextResponder)root).destroy(); | |
30 | } | |
31 | ||
32 | public RequestThread respond(Request req) { | |
33 | return(new RequestThread(root, req, workers, "Worker thread " + reqs++)); | |
34 | } | |
35 | ||
36 | private Responder bootstrap(final Class<?> bootclass) { | |
37 | final Throwable[] err = new Throwable[1]; | |
38 | final Responder[] res = new Responder[1]; | |
39 | Thread boot = new Thread(this, "JSvc boot thread") { | |
40 | public void run() { | |
41 | try { | |
42 | Method cm = bootclass.getMethod("responder"); | |
43 | Object resp = cm.invoke(null); | |
44 | if(!(resp instanceof Responder)) | |
45 | throw(new ClassCastException("JSvc bootstrapper did not return a responder")); | |
46 | res[0] = (Responder)resp; | |
47 | } catch(NoSuchMethodException e) { | |
48 | logger.log(Level.SEVERE, "Invalid JSvc bootstrapper specified", e); | |
49 | err[0] = e; | |
50 | } catch(IllegalAccessException e) { | |
51 | logger.log(Level.SEVERE, "Invalid JSvc bootstrapper specified", e); | |
52 | err[0] = e; | |
53 | } catch(InvocationTargetException e) { | |
54 | logger.log(Level.SEVERE, "JSvc bootstrapper failed", e); | |
55 | err[0] = e; | |
56 | } | |
57 | } | |
58 | }; | |
59 | boot.start(); | |
60 | try { | |
61 | boot.join(); | |
62 | } catch(InterruptedException e) { | |
63 | logger.log(Level.WARNING, "Interrupted during bootstrapping", e); | |
64 | boot.interrupt(); | |
65 | Thread.currentThread().interrupt(); | |
66 | } | |
67 | if(err[0] != null) | |
68 | throw(new RuntimeException(err[0])); | |
69 | if(res[0] == null) { | |
70 | logger.log(Level.SEVERE, "No responder returned in spite of no error having happened."); | |
71 | throw(new NullPointerException("No responder returned in spite of no error having happened.")); | |
72 | } | |
73 | return(res[0]); | |
74 | } | |
75 | } |