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source: source/ariba/overlay/BaseOverlay.h@ 3375

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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 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/overlay/modules/OverlayInterface.h"
62#include "ariba/overlay/modules/OverlayFactory.h"
63#include "ariba/overlay/modules/OverlayStructureEvents.h"
64#include "ariba/overlay/messages/OverlayMsg.h"
65#include "ariba/overlay/messages/JoinRequest.h"
66#include "ariba/overlay/messages/JoinReply.h"
67
68// forward declerations
69namespace ariba {
70 class NodeListener;
71 class CommunicationListener;
72 class SideportListener;
73 namespace utility {
74 class OvlVis;
75 }
76}
77
78using std::vector;
79using std::list;
80using std::cout;
81using std::map;
82using std::make_pair;
83using std::pair;
84using std::find;
85
86using ariba::NodeListener;
87using ariba::CommunicationListener;
88
89using ariba::communication::EndpointDescriptor;
90using ariba::communication::BaseCommunication;
91using ariba::communication::CommunicationEvents;
92
93using ariba::overlay::OverlayMsg;
94using ariba::overlay::JoinRequest;
95using ariba::overlay::JoinReply;
96using ariba::overlay::OverlayInterface;
97using ariba::overlay::OverlayFactory;
98using ariba::overlay::OverlayStructureEvents;
99
100using ariba::utility::NodeID;
101using ariba::utility::SpoVNetID;
102using ariba::utility::LinkID;
103using ariba::utility::Identifier;
104using ariba::utility::ServiceID;
105using ariba::utility::QoSParameterSet;
106using ariba::utility::SecurityParameterSet;
107using ariba::utility::Demultiplexer;
108using ariba::utility::MessageReceiver;
109using ariba::utility::MessageSender;
110using ariba::utility::seqnum_t;
111using ariba::utility::Timer;
112using ariba::utility::OvlVis;
113
114#define ovl OvlVis::instance()
115#define ovlId OvlVis::NETWORK_ID_BASE_OVERLAY
116
117namespace ariba {
118namespace overlay {
119
120class BaseOverlay :
121 public MessageReceiver,
122 public CommunicationEvents,
123 public OverlayStructureEvents,
124 protected Timer {
125
126 use_logging_h( BaseOverlay );
127public:
128 /**
129 * Constructs an empty non-functional base overlay instance
130 */
131 BaseOverlay();
132
133 /**
134 * Destructs a base overlay instance
135 */
136 virtual ~BaseOverlay();
137
138 /**
139 * Starts the Base Overlay instance
140 */
141 void start( BaseCommunication& _basecomm, const NodeID& _nodeid );
142
143 /**
144 * Stops the Base Overlay instance
145 */
146 void stop();
147
148 /**
149 * Starts a link establishment procedure to the specfied node
150 * for the service with id service
151 *
152 * @param node Destination node id
153 * @param service Service to connect to
154 */
155 const LinkID establishLink( const NodeID& node, const ServiceID& service );
156
157 /**
158 * Starts a link establishment procedure to the specified
159 * endpoint and to the specified service
160 */
161 const LinkID establishLink( const EndpointDescriptor& ep, const ServiceID& service );
162
163 /**
164 * TODO
165 */
166 void dropLink( const LinkID& link );
167
168 /**
169 * TODO
170 */
171 seqnum_t sendMessage( const Message* message, const LinkID& link );
172
173 /**
174 * TODO
175 */
176 seqnum_t sendMessage( const Message* message, const NodeID& node, const ServiceID& service );
177
178 /**
179 * Send out a message to all nodes that are known in the overlay structure.
180 * Depending on the structure of the overlay, this can be very different.
181 */
182 void broadcastMessage( Message* message, const ServiceID& service );
183
184 /**
185 * Get a list of overlay neighboring nodes.
186 */
187 vector<NodeID> getOverlayNeighbors() const;
188
189 /**
190 * Returns the end-point descriptor of a link.
191 *
192 * @param link the link id of the requested end-point
193 * @return The end-point descriptor of the link's end-point
194 */
195 const EndpointDescriptor& getEndpointDescriptor( const LinkID& link = LinkID::UNSPECIFIED ) const;
196
197 /**
198 * TODO
199 */
200 const EndpointDescriptor& getEndpointDescriptor( const NodeID& node ) const;
201
202 /**
203 * TODO
204 */
205 bool bind(CommunicationListener* listener, const ServiceID& sid);
206
207 /**
208 * TODO
209 */
210 bool unbind(CommunicationListener* listener, const ServiceID& sid);
211
212 /**
213 * TODO
214 */
215 bool bind(NodeListener* listener);
216
217 /**
218 * TODO
219 */
220 bool unbind(NodeListener* listener);
221
222 /**
223 * TODO
224 */
225 bool registerSidePort(SideportListener* _sideport);
226
227 /**
228 * TODO
229 */
230 bool unregisterSidePort(SideportListener* _sideport);
231
232 /**
233 * Returns the own nodeID or the NodeID of the specified link
234 *
235 * @param lid The link identifier
236 * @return The NodeID of the link
237 */
238 const NodeID& getNodeID( const LinkID& lid = LinkID::UNSPECIFIED ) const ;
239
240 /**
241 * Return all Links for the specified remote nodeid, or all links when
242 * the node id given is set to unspecified
243 *
244 * @param nid The node id to request links for, or unspecified for all links
245 * @return a vector that contains all the link ids requested
246 */
247 vector<LinkID> getLinkIDs( const NodeID& nid = NodeID::UNSPECIFIED ) const;
248
249 /**
250 * TODO
251 */
252 void joinSpoVNet( const SpoVNetID& id, const EndpointDescriptor& bootstrapEp );
253
254 /**
255 * TODO
256 */
257 void createSpoVNet(
258 const SpoVNetID& id,
259 const OverlayParameterSet& param = OverlayParameterSet::DEFAULT,
260 const SecurityParameterSet& sec = SecurityParameterSet::DEFAULT,
261 const QoSParameterSet& qos = QoSParameterSet::DEFAULT
262 );
263
264 /**
265 * TODO
266 */
267 void leaveSpoVNet();
268
269protected:
270
271 /**
272 * @see ariba::communication::CommunicationEvents.h
273 */
274 virtual void onLinkUp( const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote );
275
276 /**
277 * @see ariba::communication::CommunicationEvents.h
278 */
279 virtual void onLinkDown( const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote );
280
281 /**
282 * @see ariba::communication::CommunicationEvents.h
283 */
284 virtual void onLinkChanged( const LinkID& id, const NetworkLocator* oldlocal, const NetworkLocator* newlocal, const NetworkLocator* oldremote, const NetworkLocator* newremote );
285
286 /**
287 * @see ariba::communication::CommunicationEvents.h
288 */
289 virtual void onLinkFail( const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote );
290
291 /**
292 * @see ariba::communication::CommunicationEvents.h
293 */
294 virtual void onLinkQoSChanged( const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote, const QoSParameterSet& qos );
295
296 /**
297 * @see ariba::communication::CommunicationEvents.h
298 */
299 virtual bool onLinkRequest( const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote );
300
301 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
302 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
303 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
304
305 /**
306 * TODO
307 */
308 virtual bool receiveMessage( const Message* message, const LinkID& link, const NodeID& ); // nodeid is not valid in this case!
309
310 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
311 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
312 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
313
314 /**
315 * see OverlayStructureEvents.h, called from specific OverlayInterface class
316 */
317 virtual void incomingRouteMessage( Message* msg );
318
319 /**
320 * see OverlayStructureEvents.h, called from specific OverlayInterface class
321 */
322 virtual void onNodeJoin( const NodeID& node );
323
324
325 /**
326 * TODO, for timer events
327 */
328 virtual void eventFunction();
329
330private:
331 /**
332 * The BaseCommunication the BaseOverlay
333 * communicates over
334 */
335 BaseCommunication* bc;
336
337 /**
338 * The nodeid of this BaseOverlay instance.
339 */
340 NodeID nodeId;
341
342 /**
343 * The SpoVNetID that we are joined to
344 * or that we have created.
345 */
346 SpoVNetID spovnetId;
347
348 /**
349 * TODO
350 */
351 Demultiplexer<CommunicationListener*, ServiceID> communicationListeners;
352
353 /**
354 * TODO
355 */
356 typedef vector<NodeListener*> NodeListenerVector;
357
358 /**
359 * TODO
360 */
361 NodeListenerVector nodeListeners;
362
363 /**
364 * TODO
365 */
366 SideportListener* sideport;
367
368 /**
369 * The abstract overlay interface that implements
370 * the overlay specific functionality.
371 */
372 OverlayInterface* overlayInterface;
373
374 /**
375 * The special link to the Initiator of the SpoVNet
376 * or LinkID::UNDEFINED if we are the Initiator
377 */
378 LinkID initiatorLink;
379
380 /**
381 * The state of the BaseOverlay
382 */
383 typedef enum _BaseOverlayState {
384 BaseOverlayStateInvalid = 0,
385 BaseOverlayStateInitiator = 1,
386 BaseOverlayStateJoinInitiated = 2,
387 BaseOverlayStateCompleted = 3,
388 } BaseOverlayState;
389
390 /**
391 * TODO
392 */
393 BaseOverlayState state;
394
395 /**
396 * The initiator node
397 */
398 NodeID spovnetInitiator;
399
400 /**
401 * OvlVis
402 */
403 NodeID min, max;
404 NodeID succ, pred;
405 void updateOvlVis( const NodeID& node );
406
407 /**
408 * Link management
409 */
410 class LinkItem {
411 public:
412 static const LinkItem UNSPECIFIED;
413
414 LinkItem()
415 : link(LinkID::UNSPECIFIED), node(NodeID::UNSPECIFIED),
416 service(ServiceID::UNSPECIFIED), interface(&CommunicationListener::DEFAULT),
417 autolink(false), lastuse(0){
418 }
419
420 LinkItem( const LinkID& _link, const NodeID& _node,
421 const ServiceID& _service, CommunicationListener* _interface )
422 : link( _link ), node( _node ), service( _service ), interface( _interface ),
423 autolink( false ), lastuse( time(NULL) ) {
424
425 assert( _interface != NULL );
426 }
427
428 // general information about the link
429
430 const LinkID link;
431 NodeID node;
432 ServiceID service;
433 CommunicationListener* interface;
434
435 // information needed for auto links
436
437 void markused(){
438 lastuse = time(NULL);
439 }
440
441 bool autolink;
442 time_t lastuse;
443 };
444
445 typedef map<const LinkID, LinkItem> LinkMapping;
446 typedef pair<const LinkID,LinkItem> LinkPair;
447 LinkMapping linkMapping;
448
449
450 /**
451 * nodes with pending joines. TODO: should be cleaned every
452 * some seconds, add timestamps to each, and check on occasion
453 */
454 typedef vector<NodeID> JoiningNodes;
455 JoiningNodes joiningNodes;
456
457};
458
459}} // namespace ariba, overlay
460
461#endif /*BASEOVERLAY_H_*/
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