source: source/ariba/overlay/BaseOverlay.h@ 3037

Last change on this file since 3037 was 3037, checked in by Christoph Mayer, 15 years ago

-jede Menge fixes und Umstellungen
-angefangen ariba/interface los zu werden, erste dateien sind weg
File size: 10.2 KB
Line 
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 BASEOVERLAY_H_
40#define BASEOVERLAY_H_
41
42#include <map>
43#include <iostream>
44#include <algorithm>
45#include <ctime>
46#include <list>
47#include <vector>
48#include <boost/foreach.hpp>
49
50#include "ariba/utility/messages.h"
51#include "ariba/utility/types.h"
52#include "ariba/utility/misc/Helper.h"
53#include "ariba/utility/misc/Demultiplexer.hpp"
54#include "ariba/utility/logging/Logging.h"
55#include "ariba/utility/system/Timer.h"
56
57#include "ariba/communication/EndpointDescriptor.h"
58#include "ariba/communication/BaseCommunication.h"
59#include "ariba/communication/CommunicationEvents.h"
60
61#include "ariba/interface/ServiceInterface.h"
62
63#include "ariba/overlay/modules/OverlayInterface.h"
64#include "ariba/overlay/modules/OverlayFactory.h"
65#include "ariba/overlay/modules/OverlayStructureEvents.h"
66#include "ariba/overlay/messages/OverlayMsg.h"
67#include "ariba/overlay/messages/JoinRequest.h"
68#include "ariba/overlay/messages/JoinReply.h"
69
70using std::vector;
71using std::list;
72using std::cout;
73using std::map;
74using std::make_pair;
75using std::pair;
76using std::find;
77
78using ariba::communication::EndpointDescriptor;
79using ariba::communication::BaseCommunication;
80using ariba::communication::CommunicationEvents;
81
82using ariba::interface::ServiceInterface;
83
84using ariba::overlay::OverlayMsg;
85using ariba::overlay::JoinRequest;
86using ariba::overlay::JoinReply;
87using ariba::overlay::OverlayInterface;
88using ariba::overlay::OverlayFactory;
89using ariba::overlay::OverlayStructureEvents;
90
91using ariba::utility::NodeID;
92using ariba::utility::SpoVNetID;
93using ariba::utility::LinkID;
94using ariba::utility::Identifier;
95using ariba::utility::ServiceID;
96using ariba::utility::QoSParameterSet;
97using ariba::utility::SecurityParameterSet;
98using ariba::utility::Demultiplexer;
99using ariba::utility::MessageReceiver;
100using ariba::utility::MessageSender;
101using ariba::utility::seqnum_t;
102using ariba::utility::Timer;
103
104#define ovl OvlVis::instance()
105#define ovlId OvlVis::NETWORK_ID_BASE_OVERLAY
106
107// needed for friend decleration
108// in different namespace
109namespace ariba {
110 class Node;
111}
112
113namespace ariba {
114namespace overlay {
115
116class BaseOverlay :
117 public MessageReceiver,
118 public CommunicationEvents,
119 public OverlayStructureEvents,
120 protected Timer {
121
122 use_logging_h( BaseOverlay );
123 friend class ariba::Node;
124
125public:
126
127 /**
128 * Constructs a Base Overlay instance
129 */
130 BaseOverlay( BaseCommunication& _basecomm, const NodeID& _nodeid );
131
132 /**
133 * TODO
134 */
135 virtual ~BaseOverlay();
136
137 /**
138 * Starts a link establishment procedure to the specfied node
139 *
140 * @param node The node id
141 */
142 const LinkID establishLink( const NodeID& node, const ServiceID& service );
143
144 /**
145 * TODO
146 */
147 const LinkID establishLink( const EndpointDescriptor& ep, const ServiceID& service );
148
149 /**
150 * TODO
151 */
152 void dropLink( const LinkID& link );
153
154 /**
155 * TODO
156 */
157 seqnum_t sendMessage( const Message* message, const LinkID& link );
158
159 /**
160 * TODO
161 */
162 seqnum_t sendMessage( const Message* message, const NodeID& node, const ServiceID& service );
163
164 /**
165 * Send out a message to all nodes that are known in the overlay structure.
166 * Depending on the structure of the overlay, this can be very different.
167 */
168 void broadcastMessage(
169 Message* message,
170 const ServiceID& service
171 );
172
173 /**
174 * Get a list of overlay neighboring nodes.
175 */
176 vector<NodeID> getOverlayNeighbors() const;
177
178 /**
179 * Returns the end-point descriptor of a link.
180 *
181 * @param link the link id of the requested end-point
182 * @return The end-point descriptor of the link's end-point
183 */
184 const EndpointDescriptor& getEndpointDescriptor( const LinkID& link = LinkID::UNSPECIFIED ) const;
185
186 /**
187 * TODO
188 */
189 const EndpointDescriptor& getEndpointDescriptor( const NodeID& node ) const;
190
191 /**
192 * Registers a receiver.
193 *
194 * @param receiver An implementation of the receiver interface
195 */
196 bool bind( ServiceInterface* service, const ServiceID& sid );
197
198 /**
199 * Unregister a receiver.
200 *
201 * @param sid The service id to unregister
202 */
203 ServiceInterface* unbind( const ServiceID& sid );
204
205 /**
206 * Returns the own nodeID or the NodeID of the specified link
207 *
208 * @param lid The link identifier
209 * @return The NodeID of the link
210 */
211 const NodeID& getNodeID( const LinkID& lid = LinkID::UNSPECIFIED ) const ;
212
213protected:
214
215 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
216 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
217 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
218
219 void joinSpoVNet(
220 const SpoVNetID& id,
221 const EndpointDescriptor& bootstrapEp
222 );
223
224 void createSpoVNet(
225 const SpoVNetID& id,
226 const OverlayParameterSet& param = OverlayParameterSet::DEFAULT,
227 const SecurityParameterSet& sec = SecurityParameterSet::DEFAULT,
228 const QoSParameterSet& qos = QoSParameterSet::DEFAULT
229 );
230
231 void leaveSpoVNet(
232 );
233
234 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
235 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
236 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
237
238 virtual void onLinkUp( const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote );
239
240 virtual void onLinkDown( const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote );
241
242 virtual void onLinkChanged( const LinkID& id, const NetworkLocator* oldlocal, const NetworkLocator* newlocal, const NetworkLocator* oldremote, const NetworkLocator* newremote );
243
244 virtual void onLinkFail( const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote );
245
246 virtual void onLinkQoSChanged( const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote, const QoSParameterSet& qos );
247
248 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
249 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
250 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
251
252 virtual bool receiveMessage( const Message* message, const LinkID& link, const NodeID& ); // nodeid is not valid in this case!
253
254 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
255 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
256 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
257
258 /**
259 * see OverlayStructureEvents.h, called from specific OverlayInterface class
260 */
261 virtual void incomingRouteMessage( Message* msg );
262 virtual void onNodeJoin( const NodeID& node );
263
264 // for timer events
265 virtual void eventFunction();
266
267private:
268
269 /**
270 * The BaseCommunication the BaseOverlay
271 * communicates over
272 */
273 BaseCommunication& bc;
274
275 /**
276 * The nodeid of this BaseOverlay instance.
277 */
278 NodeID nodeId;
279
280 /**
281 * The SpoVNetID that we are joined to
282 * or that we have created.
283 */
284 SpoVNetID spovnetId;
285
286 /**
287 * A demultiplexer that maps listeners to service ids
288 * to deliver upcoming messages to the correct service.
289 */
290 Demultiplexer<ServiceInterface*, ServiceID> listenerMux;
291
292 /**
293 * The abstract overlay interface that implements
294 * the overlay specific functionality.
295 */
296 OverlayInterface* overlayInterface;
297
298 /**
299 * The special link to the Initiator of the SpoVNet
300 * or LinkID::UNDEFINED if we are the Initiator
301 */
302 LinkID initiatorLink;
303
304 /**
305 * The state of the BaseOverlay
306 */
307 typedef enum _BaseOverlayState {
308 BaseOverlayStateInvalid = 0,
309 BaseOverlayStateInitiator = 1,
310 BaseOverlayStateJoinInitiated = 2,
311 BaseOverlayStateCompleted = 3,
312 } BaseOverlayState;
313
314 BaseOverlayState state;
315
316 /**
317 * The initiator node
318 */
319 NodeID spovnetInitiator;
320
321 /**
322 * OvlVis
323 */
324 NodeID min, max;
325 NodeID succ, pred;
326 void updateOvlVis( const NodeID& node );
327
328 /**
329 * Link management
330 */
331 class LinkItem {
332 public:
333 static const LinkItem UNSPECIFIED;
334
335 LinkItem( const LinkID& _link, const NodeID& _node,
336 const ServiceID& _service, ServiceInterface* _interface )
337 : link( _link ), node( _node ), service( _service ), interface( _interface ),
338 autolink( false ), lastuse( time(NULL) ) {
339 }
340
341 // general information about the link
342
343 const LinkID link;
344 NodeID node;
345 ServiceID service;
346 ServiceInterface* interface;
347
348 // information needed for auto links
349
350 void markused(){
351 lastuse = time(NULL);
352 }
353
354 bool autolink;
355 time_t lastuse;
356 };
357
358 typedef map<const LinkID, LinkItem> LinkMapping;
359 typedef pair<const LinkID,LinkItem> LinkPair;
360 LinkMapping linkMapping;
361
362 // nodes with pending joines. TODO: should be cleaned every some seconds
363 // add timestamps to each, and check on occasion
364 typedef vector<NodeID> JoiningNodes;
365 JoiningNodes joiningNodes;
366
367};
368
369}} // namespace ariba, overlay
370
371#endif /*BASEOVERLAY_H_*/
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