summaryrefslogtreecommitdiff
path: root/java/demo/Database/library/ReapTask.java
blob: ed15614eb9d6c70b23daa08ec0299b2ecd8e19c9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
// **********************************************************************
//
// Copyright (c) 2003-2015 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************

import Demo.*;

class ReapTask implements Runnable
{
    static class SessionProxyPair
    {
        SessionProxyPair(Demo.SessionPrx p, SessionI s)
        {
            glacier2proxy = null;
            proxy = p;
            session = s;
        }

        SessionProxyPair(Glacier2.SessionPrx p, SessionI s)
        {
            glacier2proxy = p;
            proxy = null;
            session = s;
        }

        Glacier2.SessionPrx glacier2proxy;
        Demo.SessionPrx proxy;
        SessionI session;
    }

    ReapTask(Ice.Logger logger, long timeout)
    {
        _logger = logger;
        _timeout = timeout;
    }

    @Override
    synchronized public void
    run()
    {
        java.util.Iterator<SessionProxyPair> p = _sessions.iterator();
        while(p.hasNext())
        {
            SessionProxyPair s = p.next();
            try
            {
                //
                // Session destruction may take time in a
                // real-world example. Therefore the current time
                // is computed for each iteration.
                //
                if((System.currentTimeMillis() - s.session.timestamp()) > _timeout * 1000)
                {
                    _logger.trace("ReapTask", "The session " +
                                  s.proxy.ice_getCommunicator().identityToString(s.proxy.ice_getIdentity()) +
                                  " has timed out.");
                    if(s.proxy != null)
                    {
                        s.proxy.destroy();
                    }
                    else
                    {
                        s.glacier2proxy.destroy();
                    }
                    p.remove();
                }
            }
            catch(Ice.ObjectNotExistException e)
            {
                p.remove();
            }
        }
    }

    synchronized public void
    terminate()
    {
        // Destroy each of the sessions, releasing any resources they
        // may hold. This calls directly on the session, not via the
        // proxy since terminate() is called after the communicator is
        // shutdown, which means calls on collocated objects are not
        // permitted.
        for(SessionProxyPair p : _sessions)
        {
            p.session.shutdown();
        }
        _sessions.clear();
    }

    synchronized public void
    add(SessionPrx proxy, SessionI session)
    {
        _sessions.add(new SessionProxyPair(proxy, session));
    }

    synchronized public void
    add(Glacier2.SessionPrx proxy, SessionI session)
    {
        _sessions.add(new SessionProxyPair(proxy, session));
    }

    private final long _timeout;
    private Ice.Logger _logger;
    private java.util.List<SessionProxyPair> _sessions = new java.util.LinkedList<SessionProxyPair>();
}