An Overlay-based
Virtual Network Substrate
SpoVNet

source: source/ariba/overlay/OverlayBootstrap.cpp @ 7468

Last change on this file since 7468 was 6832, checked in by Christoph Mayer, 14 years ago

-kleine fixes

File size: 7.2 KB
Line 
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,
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// [License]
38
39#include "OverlayBootstrap.h"
40
41#include "BaseOverlay.h"
42#include "ariba/utility/bootstrap/modules/bluetoothsdp/BluetoothSdp.h"
43
44using ariba::utility::BluetoothSdp;
45
46namespace ariba {
47namespace overlay {
48
49use_logging_cpp(OverlayBootstrap);
50SystemEventType OverlayBootstrapMethodType("OverlayBootstrapMethodType");
51
52OverlayBootstrap::OverlayBootstrap()
53        :       manager( BootstrapManager::instance() ),
54                spovnetid( SpoVNetID::UNSPECIFIED ),
55                nodeid( NodeID::UNSPECIFIED ),
56                overlay( NULL ),
57                watchtimer(this),
58                haveOverlayConnection(false){
59
60        srand(time(NULL));
61
62        BluetoothSdp::CONNECTION_CHECKER = this;
63}
64
65OverlayBootstrap::~OverlayBootstrap(){
66}
67
68void OverlayBootstrap::start(BaseOverlay* _overlay, const SpoVNetID& _spovnetid, const NodeID& _nodeid){
69        overlay = _overlay;
70        spovnetid = _spovnetid;
71        nodeid = _nodeid;
72
73        logging_info("starting overlay bootstrap");
74
75        manager.registerCallback( this );
76        //manager.registerModule( BootstrapManager::BootstrapTypePeriodicBroadcast );
77        //manager.registerModule( BootstrapManager::BootstrapTypeBluetoothSdp );
78        //manager.registerModule( BootstrapManager::BootstrapTypeMulticastDns );
79
80        watchtimer.startWatchdog();
81}
82
83void OverlayBootstrap::stop(){
84        overlay = NULL;
85        spovnetid = SpoVNetID::UNSPECIFIED;
86        nodeid = NodeID::UNSPECIFIED;
87
88        logging_info("stopping overlay bootstrap");
89
90        manager.unregisterCallback( this );
91        //manager.unregisterModule( BootstrapManager::BootstrapTypePeriodicBroadcast );
92        //manager.unregisterModule( BootstrapManager::BootstrapTypeBluetoothSdp );
93        //manager.unregisterModule( BootstrapManager::BootstrapTypeMulticastDns );
94
95        watchtimer.stopWatchdog();
96}
97
98void OverlayBootstrap::handleSystemEvent(const SystemEvent& event){
99        JoinData* data = event.getData<JoinData>();
100
101        // announcement for our spovnet
102        logging_info( "found bootstrap node for our SpoVNetID " << data->spovnetid.toString()
103                        << " on NodeID " << data->nodeid.toString() << " with endpoint " << data->endpoint.toString() );
104
105        // tell the base overlay to join using this endpoint
106        assert( overlay != NULL );
107        overlay->joinSpoVNet( spovnetid, data->endpoint );
108
109        delete data;
110}
111
112void OverlayBootstrap::onBootstrapServiceFound(string name, string info1, string info2, string info3){
113        if( overlay == NULL ) return;
114        if(name.length() <= 0 || info1.length() <= 0 || info2.length() <= 0 || info3.length() <= 0) return;
115
116        //
117        // generate the types
118        //
119
120        SpoVNetID sid( info1 );
121        NodeID nid( info2 );
122        EndpointDescriptor ep( info3 );
123
124        //
125        // is this announcement of interest for us?
126        //
127
128        // announcement for another spovnet
129        if( sid != this->spovnetid ) return;
130
131        // announcement with our nodeid (either our announcement
132        // or a node with the same id, any way -> ignore)
133        if( nid == this->nodeid ) return;
134
135        //
136        // send out the bootstrap information as
137        // event to synchronize into the system queue
138        //
139
140        JoinData* data = new JoinData();
141        data->spovnetid = sid;
142        data->nodeid = nid;
143        data->endpoint = ep;
144
145        SystemQueue::instance().scheduleEvent(
146                        SystemEvent( this, OverlayBootstrapMethodType, data), 0 );
147}
148
149void OverlayBootstrap::publish(const EndpointDescriptor& _ep){
150
151        ostringstream r;
152        r << std::hex << rand();
153
154        randname = r.str();
155        manager.publish( randname, spovnetid.toString(), nodeid.toString(), _ep.toString() );
156}
157
158void OverlayBootstrap::revoke(){
159        manager.revoke( randname );
160}
161
162void OverlayBootstrap::recordJoin(const EndpointDescriptor& _ep){
163        boost::mutex::scoped_lock lock(lastJoinesMutex);
164
165        JoinData data;
166        data.spovnetid = spovnetid;
167        data.nodeid = nodeid;
168        data.endpoint = _ep;
169
170        logging_info("recording bootstrap information " << data.endpoint.toString());
171
172        lastJoines.push_front(data);
173}
174
175bool OverlayBootstrap::haveOverlayConnections(){
176        boost::mutex::scoped_lock lock(haveOverlayConnectionMutex);
177        return haveOverlayConnection;
178}
179
180void OverlayBootstrap::checkOverlayStatus(){
181
182        // if we have no overlay neighbors, try to bootstrap using
183        // bootstrap information that we already used
184
185        {       //limit history to 10 endpoints
186                boost::mutex::scoped_lock lock(lastJoinesMutex);
187                while(lastJoines.size() > 10)
188                        lastJoines.pop_back();
189        }
190
191        {
192                boost::mutex::scoped_lock lock(haveOverlayConnectionMutex);
193                haveOverlayConnection = overlay->getOverlayNeighbors().size() > 0;
194
195                // we have overlay neighbors -> ok nothing to do
196                if(haveOverlayConnection > 0) return;
197        }
198
199        // no overlay neighbors, see if we can join using old information
200        logging_info("overlay not joined, checking for earlier used bootstrap information");
201        EndpointDescriptor joinep = EndpointDescriptor::UNSPECIFIED();
202
203        // no overlay neighbors -> try out already
204        // successfully used bootstrap nodes
205        JoinData data;
206        {
207                boost::mutex::scoped_lock lock(lastJoinesMutex);
208                JoinStack::iterator i = lastJoines.begin();
209                if(i == lastJoines.end()) return;
210
211                // use last used element and then put it into back
212                joinep = (*i).endpoint;
213
214                if(lastJoines.size() >= 2)
215                        swap( *lastJoines.begin(), *(--(lastJoines.end())) );
216        }
217
218        logging_info("no overlay conenctivity detected, " <<
219                                        "trying to join using old bootstrap information: " <<
220                                        joinep.toString());
221
222        // try to join using this node, if the join is successfull
223        // the endpoint will again be inserted using recordJoin
224        overlay->joinSpoVNet( spovnetid, joinep );
225}
226
227OverlayBootstrap::WatchdogTimer::WatchdogTimer(OverlayBootstrap* _obj) : obj(_obj) {
228}
229
230void OverlayBootstrap::WatchdogTimer::startWatchdog(){
231        Timer::setInterval(5000);
232        Timer::start();
233}
234
235void OverlayBootstrap::WatchdogTimer::stopWatchdog(){
236        Timer::stop();
237}
238
239void OverlayBootstrap::WatchdogTimer::eventFunction(){
240        if(obj == NULL) return;
241        obj->checkOverlayStatus();
242}
243
244}} // namespace ariba, overlay
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