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source: source/ariba/communication/BaseCommunication.h@ 2850

Last change on this file since 2850 was 2483, checked in by Christoph Mayer, 16 years ago

-autolinks impl. (funktioniert noch nicht komplett, macht aber im moment nichts schlechter)
-einige fixes im ablauf etc.
File size: 9.3 KB
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1// [Licence]
2// The Ariba-Underlay Copyright
3//
4// Copyright (c) 2008-2009, Institute of Telematics, UniversitÀt Karlsruhe (TH)
5//
6// Institute of Telematics
7// UniversitÀt Karlsruhe (TH)
8// Zirkel 2, 76128 Karlsruhe
9// Germany
10//
11// Redistribution and use in source and binary forms, with or without
12// modification, are permitted provided that the following conditions are
13// met:
14//
15// 1. Redistributions of source code must retain the above copyright
16// notice, this list of conditions and the following disclaimer.
17// 2. Redistributions in binary form must reproduce the above copyright
18// notice, this list of conditions and the following disclaimer in the
19// documentation and/or other materials provided with the distribution.
20//
21// THIS SOFTWARE IS PROVIDED BY THE INSTITUTE OF TELEMATICS ``AS IS'' AND
22// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ARIBA PROJECT OR
25// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
28// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
29// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
31// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32//
33// The views and conclusions contained in the software and documentation
34// are those of the authors and should not be interpreted as representing
35// official policies, either expressed or implied, of the Institute of
36// Telematics.
37// [Licence]
38
39#ifndef BASECOMMUNICATION_H_
40#define BASECOMMUNICATION_H_
41
42#include <ext/hash_map>
43#include <ext/hash_set>
44#include <map>
45#include <set>
46#include <vector>
47#include <iostream>
48#include <deque>
49#include <algorithm>
50#include <boost/foreach.hpp>
51
52#include "ariba/utility/types.h"
53#include "ariba/utility/messages.h"
54#include "ariba/utility/logging/Logging.h"
55#include "ariba/utility/misc/Demultiplexer.hpp"
56
57#include "ariba/communication/CommunicationEvents.h"
58#include "ariba/communication/EndpointDescriptor.h"
59#include "ariba/communication/networkinfo/NetworkChangeInterface.h"
60#include "ariba/communication/networkinfo/NetworkChangeDetection.h"
61#include "ariba/communication/networkinfo/NetworkInformation.h"
62#include "ariba/communication/networkinfo/AddressInformation.h"
63#include "ariba/communication/messages/AribaBaseMsg.h"
64#include "ariba/communication/modules/transport/TransportProtocol.h"
65#include "ariba/communication/modules/network/NetworkProtocol.h"
66#include "ariba/communication/modules/network/NetworkLocator.h"
67
68#ifndef UNDERLAY_OMNET
69 #include "ariba/communication/modules/transport/tcp/TCPTransport.h"
70 #include "ariba/communication/modules/network/ip/IPv4NetworkProtocol.h"
71#endif
72
73using __gnu_cxx::hash_set;
74using __gnu_cxx::hash_map;
75
76using std::cout;
77using std::set;
78using std::map;
79using std::vector;
80using std::deque;
81using std::pair;
82using std::make_pair;
83using std::find;
84
85using ariba::communication::NetworkChangeDetection;
86using ariba::communication::NetworkChangeInterface;
87using ariba::communication::NetworkInterfaceList;
88using ariba::communication::NetworkInformation;
89using ariba::communication::AddressInformation;
90using ariba::communication::AddressList;
91using ariba::communication::AribaBaseMsg;
92using ariba::communication::CommunicationEvents;
93
94using ariba::utility::Demultiplexer;
95using ariba::utility::QoSParameterSet;
96using ariba::utility::SecurityParameterSet;
97using ariba::utility::Address;
98using ariba::utility::LinkID;
99using ariba::utility::LinkIDs;
100using ariba::utility::Message;
101using ariba::utility::MessageReceiver;
102using ariba::utility::seqnum_t;
103
104using ariba::communication::TransportProtocol;
105using ariba::communication::NetworkProtocol;
106using ariba::communication::NetworkLocator;
107#ifndef UNDERLAY_OMNET
108 using ariba::communication::IPv4NetworkProtocol;
109 using ariba::communication::TCPTransport;
110#endif
111
112namespace ariba {
113namespace communication {
114
115/**
116 * This class implements the Ariba Base Communication<br />
117 *
118 * Its primary task is to provide an abstraction to existing
119 * protocols and addressing schemes.
120 *
121 * @author Sebastian Mies, Christoph Mayer
122 */
123class BaseCommunication : public MessageReceiver, NetworkChangeInterface {
124
125 use_logging_h(BaseCommunication);
126
127public:
128 /**
129 * Constructs a Base Communication instance.
130 * Listens default on port number 41402
131 */
132 BaseCommunication(const NetworkLocator* _locallocator, const uint16_t _listenport);
133
134 /**
135 * Destructs a Base Communication instance
136 */
137 virtual ~BaseCommunication();
138
139 /**
140 * Establishes a link to another end-point
141 */
142 const LinkID establishLink(
143 const EndpointDescriptor& descriptor,
144 const QoSParameterSet& qos = QoSParameterSet::DEFAULT,
145 const SecurityParameterSet& sec = SecurityParameterSet::DEFAULT
146 );
147
148 /**
149 * Drops a link
150 *
151 * @param The link id of the link that should be dropped
152 */
153 void dropLink(const LinkID link);
154
155 /**
156 * Sends a message though an existing link to an end-point.
157 *
158 * @param lid The link identifier
159 * @param message The message to be sent
160 * @return A sequence number for this message
161 */
162 seqnum_t sendMessage(const LinkID lid, const Message* message);
163
164 /**
165 * Returns the end-point descriptor
166 *
167 * @param link the link id of the requested end-point
168 * @return The end-point descriptor of the link's end-point
169 */
170 const EndpointDescriptor& getEndpointDescriptor( const LinkID link = LinkID::UNSPECIFIED ) const;
171
172 /**
173 * Get local links to the given endpoint of all local link
174 * using the default parameter EndpointDescriptor::UNSPECIFIED
175 * @param ep The remote endpoint to get all links to.
176 * @return List of LinkID
177 */
178 LinkIDs getLocalLinks( const EndpointDescriptor& ep = EndpointDescriptor::UNSPECIFIED ) const;
179
180 /**
181 * Registers a receiver.
182 *
183 * @param _receiver The receiving side
184 */
185 void registerMessageReceiver( MessageReceiver* _receiver );
186
187 /**
188 * Unregister a receiver.
189 *
190 * @param _receiver The receiving side
191 */
192 void unregisterMessageReceiver( MessageReceiver* _receiver );
193
194 void registerEventListener( CommunicationEvents* _events );
195 void unregisterEventListener( CommunicationEvents* _events );
196
197protected:
198
199 /**
200 * Called from the Transport when async items
201 * from the SystemQueue are delivered
202 */
203 virtual bool receiveMessage( const Message* message, const LinkID& link, const NodeID& node );
204
205 /**
206 * Called when a network interface change happens
207 */
208 virtual void onNetworkChange( const NetworkChangeInterface::NetworkChangeInfo& info );
209
210private:
211
212 /**
213 * A link descriptor consisting of the
214 * end-point descriptor and currently used locator and
215 * message receiver
216 */
217 class LinkDescriptor {
218 public:
219 static const LinkDescriptor UNSPECIFIED;
220
221 LinkDescriptor() :
222 localLink(),
223 localLocator(NULL),
224 remoteLink(),
225 remoteLocator(NULL),
226 remoteEndpoint(EndpointDescriptor::UNSPECIFIED),
227 linkup(false) {
228 }
229
230 LinkDescriptor(const LinkID& _localLink, const NetworkLocator*& _localLocator,
231 const LinkID& _remoteLink, const NetworkLocator*& _remoteLocator,
232 const EndpointDescriptor& _remoteEndpoint, bool _linkup ) :
233 localLink(_localLink),
234 localLocator(_localLocator),
235 remoteLink(_remoteLink),
236 remoteLocator(_remoteLocator),
237 remoteEndpoint(_remoteEndpoint),
238 linkup(_linkup) {
239 }
240
241 LinkDescriptor( const LinkDescriptor& desc ) :
242 localLink(desc.localLink),
243 localLocator(desc.localLocator),
244 remoteLink(desc.remoteLink),
245 remoteLocator(desc.remoteLocator),
246 remoteEndpoint(desc.remoteEndpoint),
247 linkup(desc.linkup) {
248
249 BOOST_FOREACH( Message* msg, desc.waitingmsg ){
250 waitingmsg.push_back( msg );
251 }
252 }
253
254 bool isUnspecified() const {
255 return (this == &UNSPECIFIED);
256 }
257
258 LinkID localLink;
259 const NetworkLocator* localLocator;
260 LinkID remoteLink;
261 const NetworkLocator* remoteLocator;
262 EndpointDescriptor remoteEndpoint;
263
264 bool linkup;
265 deque<Message*> waitingmsg;
266 };
267
268 /**
269 * Link management: add a link
270 */
271 void addLink( const LinkDescriptor& link );
272
273 /**
274 * Link management: remove alink
275 */
276 void removeLink( const LinkID& localLink );
277
278 /**
279 * Link management: get link information using the local link
280 */
281 LinkDescriptor& queryLocalLink( const LinkID& localLink ) const;
282
283 /**
284 * Link management: get link information using the remote link
285 */
286 LinkDescriptor& queryRemoteLink( const LinkID& remoteLink ) const;
287
288 /**
289 * Link management: list of links
290 */
291 typedef vector<LinkDescriptor> LinkSet;
292
293 /**
294 * Link management: the set of currently managed links
295 */
296 LinkSet linkSet;
297
298 /**
299 * The message receiver
300 */
301 MessageReceiver* messageReceiver;
302
303 /**
304 * The local end-point descriptor
305 */
306 EndpointDescriptor localDescriptor;
307
308 /**
309 * Network information and protocol
310 */
311 NetworkProtocol* network;
312
313 /**
314 * Transport information and protocol
315 */
316 TransportProtocol* transport;
317
318#ifndef UNDERLAY_OMNET
319 /**
320 * Detect changes in the routing/interface, etc.
321 * stuff needed for mobility detection
322 */
323 NetworkChangeDetection networkMonitor;
324#endif
325
326 /**
327 * The local listen port
328 */
329 uint16_t listenport;
330
331 typedef set<CommunicationEvents*> EventListenerSet;
332 EventListenerSet eventListener;
333
334 seqnum_t currentSeqnum;
335};
336
337}} // namespace ariba, communication
338
339#endif /*BASECOMMUNICATION_H_*/
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