source: source/ariba/communication/BaseCommunication.h@ 4934

Last change on this file since 4934 was 4582, checked in by Christoph Mayer, 15 years ago
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1// [License]
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,
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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// [License]
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 <algorithm>
49#include <boost/foreach.hpp>
50
51#include "ariba/utility/types.h"
52#include "ariba/utility/messages.h"
53#include "ariba/utility/logging/Logging.h"
54#include "ariba/utility/misc/Demultiplexer.hpp"
55
56#include "ariba/communication/CommunicationEvents.h"
57#include "ariba/communication/EndpointDescriptor.h"
58#include "ariba/communication/networkinfo/NetworkChangeInterface.h"
59#include "ariba/communication/networkinfo/NetworkChangeDetection.h"
60#include "ariba/communication/networkinfo/NetworkInformation.h"
61#include "ariba/communication/networkinfo/AddressInformation.h"
62#include "ariba/communication/messages/AribaBaseMsg.h"
63#include "ariba/communication/modules/transport/TransportProtocol.h"
64#include "ariba/communication/modules/network/NetworkProtocol.h"
65#include "ariba/communication/modules/network/NetworkLocator.h"
66
67#ifndef UNDERLAY_OMNET
68 #include "ariba/communication/modules/transport/tcp/TCPTransport.h"
69 #include "ariba/communication/modules/network/ip/IPv4NetworkProtocol.h"
70#endif
71
72using __gnu_cxx::hash_set;
73using __gnu_cxx::hash_map;
74
75using std::cout;
76using std::set;
77using std::map;
78using std::vector;
79using std::pair;
80using std::make_pair;
81using std::find;
82
83using ariba::communication::NetworkChangeDetection;
84using ariba::communication::NetworkChangeInterface;
85using ariba::communication::NetworkInterfaceList;
86using ariba::communication::NetworkInformation;
87using ariba::communication::AddressInformation;
88using ariba::communication::AddressList;
89using ariba::communication::AribaBaseMsg;
90using ariba::communication::CommunicationEvents;
91
92using ariba::utility::Demultiplexer;
93using ariba::utility::QoSParameterSet;
94using ariba::utility::SecurityParameterSet;
95using ariba::utility::Address;
96using ariba::utility::LinkID;
97using ariba::utility::LinkIDs;
98using ariba::utility::Message;
99using ariba::utility::MessageReceiver;
100using ariba::utility::seqnum_t;
101
102using ariba::communication::TransportProtocol;
103using ariba::communication::NetworkProtocol;
104using ariba::communication::NetworkLocator;
105#ifndef UNDERLAY_OMNET
106 using ariba::communication::IPv4NetworkProtocol;
107 using ariba::communication::TCPTransport;
108#endif
109
110namespace ariba {
111namespace communication {
112
113/**
114 * This class implements the Ariba Base Communication<br />
115 *
116 * Its primary task is to provide an abstraction to existing
117 * protocols and addressing schemes.
118 *
119 * @author Sebastian Mies, Christoph Mayer
120 */
121class BaseCommunication : public MessageReceiver, NetworkChangeInterface {
122 use_logging_h(BaseCommunication);
123public:
124
125 /**
126 * Default ctor that just creates an empty
127 * non functional base communication
128 */
129 BaseCommunication();
130
131 /**
132 * Default dtor that does nothing
133 */
134 virtual ~BaseCommunication();
135
136 /**
137 * Startup the base communication, start modules etc.
138 */
139 void start(const NetworkLocator* _locallocator, const uint16_t _listenport);
140
141 /**
142 * stop the base communication, stop modules etc.
143 */
144 void stop();
145
146 /**
147 * Establishes a link to another end-point.
148 */
149 const LinkID establishLink(
150 const EndpointDescriptor& descriptor,
151 const LinkID& linkid = LinkID::UNSPECIFIED,
152 const QoSParameterSet& qos = QoSParameterSet::DEFAULT,
153 const SecurityParameterSet& sec = SecurityParameterSet::DEFAULT
154 );
155
156 /**
157 * Drops a link.
158 *
159 * @param The link id of the link that should be dropped
160 */
161 void dropLink(const LinkID link);
162
163 /**
164 * Sends a message though an existing link to an end-point.
165 *
166 * @param lid The link identifier
167 * @param message The message to be sent
168 * @return A sequence number for this message
169 */
170 seqnum_t sendMessage(const LinkID lid, const Message* message);
171
172 /**
173 * Returns the end-point descriptor
174 *
175 * @param link the link id of the requested end-point
176 * @return The end-point descriptor of the link's end-point
177 */
178 const EndpointDescriptor& getEndpointDescriptor( const LinkID link = LinkID::UNSPECIFIED ) const;
179
180 /**
181 * Get local links to the given endpoint of all local link
182 * using the default parameter EndpointDescriptor::UNSPECIFIED
183 * @param ep The remote endpoint to get all links to.
184 * @return List of LinkID
185 */
186 LinkIDs getLocalLinks( const EndpointDescriptor& ep = EndpointDescriptor::UNSPECIFIED ) const;
187
188 /**
189 * Registers a receiver.
190 *
191 * @param _receiver The receiving side
192 */
193 void registerMessageReceiver( MessageReceiver* _receiver );
194
195 /**
196 * Unregister a receiver.
197 *
198 * @param _receiver The receiving side
199 */
200 void unregisterMessageReceiver( MessageReceiver* _receiver );
201
202 void registerEventListener( CommunicationEvents* _events );
203 void unregisterEventListener( CommunicationEvents* _events );
204
205protected:
206
207 /**
208 * Called from the Transport when async items
209 * from the SystemQueue are delivered
210 */
211 virtual bool receiveMessage( const Message* message, const LinkID& link, const NodeID& node );
212
213 /**
214 * Called when a network interface change happens
215 */
216 virtual void onNetworkChange( const NetworkChangeInterface::NetworkChangeInfo& info );
217
218private:
219
220 /**
221 * A link descriptor consisting of the
222 * end-point descriptor and currently used locator and
223 * message receiver
224 */
225 class LinkDescriptor {
226 public:
227 static const LinkDescriptor UNSPECIFIED;
228
229 LinkDescriptor() :
230 localLink(LinkID::UNSPECIFIED),
231 localLocator(NULL),
232 remoteLink(LinkID::UNSPECIFIED),
233 remoteLocator(NULL),
234 remoteEndpoint(EndpointDescriptor::UNSPECIFIED),
235 linkup(false) {
236 }
237
238 LinkDescriptor(const LinkID& _localLink, const NetworkLocator*& _localLocator,
239 const LinkID& _remoteLink, const NetworkLocator*& _remoteLocator,
240 const EndpointDescriptor& _remoteEndpoint, bool _linkup ) :
241 localLink(_localLink),
242 localLocator(_localLocator),
243 remoteLink(_remoteLink),
244 remoteLocator(_remoteLocator),
245 remoteEndpoint(_remoteEndpoint),
246 linkup(_linkup) {
247 }
248
249 LinkDescriptor( const LinkDescriptor& desc ) :
250 localLink(desc.localLink),
251 localLocator(desc.localLocator),
252 remoteLink(desc.remoteLink),
253 remoteLocator(desc.remoteLocator),
254 remoteEndpoint(desc.remoteEndpoint),
255 linkup(desc.linkup) {
256 }
257
258 bool isUnspecified() const {
259 return (this == &UNSPECIFIED);
260 }
261
262 LinkID localLink;
263 const NetworkLocator* localLocator;
264 LinkID remoteLink;
265 const NetworkLocator* remoteLocator;
266 EndpointDescriptor remoteEndpoint;
267
268 bool linkup;
269 };
270
271 /**
272 * Link management: add a link
273 */
274 void addLink( const LinkDescriptor& link );
275
276 /**
277 * Link management: remove alink
278 */
279 void removeLink( const LinkID& localLink );
280
281 /**
282 * Link management: get link information using the local link
283 */
284 LinkDescriptor& queryLocalLink( const LinkID& localLink ) const;
285
286 /**
287 * Link management: get link information using the remote link
288 */
289 LinkDescriptor& queryRemoteLink( const LinkID& remoteLink ) const;
290
291 /**
292 * Link management: list of links
293 */
294 typedef vector<LinkDescriptor> LinkSet;
295
296 /**
297 * Link management: the set of currently managed links
298 */
299 LinkSet linkSet;
300
301 /**
302 * The message receiver
303 */
304 MessageReceiver* messageReceiver;
305
306 /**
307 * The local end-point descriptor
308 */
309 EndpointDescriptor localDescriptor;
310
311 /**
312 * Network information and protocol
313 */
314 NetworkProtocol* network;
315
316 /**
317 * Transport information and protocol
318 */
319 TransportProtocol* transport;
320
321#ifndef UNDERLAY_OMNET
322 /**
323 * Detect changes in the routing/interface, etc.
324 * stuff needed for mobility detection
325 */
326 NetworkChangeDetection networkMonitor;
327#endif
328
329 /**
330 * The local listen port
331 */
332 uint16_t listenport;
333
334 typedef set<CommunicationEvents*> EventListenerSet;
335 EventListenerSet eventListener;
336
337 seqnum_t currentSeqnum;
338};
339
340}} // namespace ariba, communication
341
342#endif /*BASECOMMUNICATION_H_*/
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