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
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/*
This file is part of GNUnet.
(C) 2011, 2012 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
package org.gnunet.peerinfo;
import org.gnunet.hello.HelloMessage;
import org.gnunet.requests.Request;
import org.gnunet.requests.RequestQueue;
import org.gnunet.util.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Interface to the service that maintains all known hosts.
*
* @author Florian Dold
*/
public class PeerInfo {
private static final Logger logger = LoggerFactory
.getLogger(AbsoluteTime.class);
private final RequestQueue requests;
private PeerIterateRequest activeRequest;
private class PeerIterateRequest extends Request {
public PeerIdentity peer;
public PeerProcessor peerProcessor;
@Override
public void transmit(Connection.MessageSink sink) {
if (peer == null) {
ListAllPeersMessage lapm = new ListAllPeersMessage();
sink.send(lapm);
} else {
ListPeerMessage lpm = new ListPeerMessage();
lpm.peer = peer;
sink.send(lpm);
}
activeRequest = this;
requests.clog();
}
}
private class PeerInfoMessageReceiver extends RunaboutMessageReceiver {
public void visit(InfoEnd infoEnd) {
activeRequest.peerProcessor.onEnd();
activeRequest = null;
requests.unclog();
}
public void visit(InfoMessage infoMessage) {
if (activeRequest == null) {
logger.warn("PEERINFO sent info message, but no request is active");
}
activeRequest.peerProcessor.onPeer(infoMessage.peerIdentity, infoMessage.hello);
}
@Override
public void handleError() {
}
}
public PeerInfo(Configuration cfg) {
Client client = new Client("peerinfo", cfg);
requests = new RequestQueue(client, new PeerInfoMessageReceiver());
}
public Cancelable iterate(RelativeTime timeout, PeerProcessor iterator) {
return iterate(timeout, null, iterator);
}
public Cancelable iterate(RelativeTime timeout, PeerIdentity peer, PeerProcessor iterator) {
PeerIterateRequest peerIterateRequest = new PeerIterateRequest();
peerIterateRequest.peer = peer;
peerIterateRequest.peerProcessor = iterator;
peerIterateRequest.setDeadline(timeout.toAbsolute());
return requests.add(peerIterateRequest);
}
public void disconnect() {
requests.destroy();
}
public static void main(String... args) {
new Program(args) {
@Override
public void run() {
final PeerInfo peerInfo = new PeerInfo(getConfiguration());
peerInfo.iterate(RelativeTime.FOREVER, new PeerProcessor() {
@Override
public void onPeer(PeerIdentity peerIdentity, HelloMessage hello) {
System.out.println("got peer");
}
@Override
public void onEnd() {
System.out.println("got peer end");
peerInfo.disconnect();
}
});
}
}.start();
}
}
|
