1 | // [License]
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2 | // The Ariba-Underlay Copyright
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3 | //
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4 | // Copyright (c) 2008-2009, Institute of Telematics, UniversitÀt Karlsruhe (TH)
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5 | //
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6 | // Institute of Telematics
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7 | // UniversitÀt Karlsruhe (TH)
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8 | // Zirkel 2, 76128 Karlsruhe
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9 | // Germany
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10 | //
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11 | // Redistribution and use in source and binary forms, with or without
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12 | // modification, are permitted provided that the following conditions are
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13 | // met:
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14 | //
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15 | // 1. Redistributions of source code must retain the above copyright
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16 | // notice, this list of conditions and the following disclaimer.
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17 | // 2. Redistributions in binary form must reproduce the above copyright
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18 | // notice, this list of conditions and the following disclaimer in the
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19 | // documentation and/or other materials provided with the distribution.
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20 | //
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21 | // THIS SOFTWARE IS PROVIDED BY THE INSTITUTE OF TELEMATICS ``AS IS'' AND
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22 | // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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23 | // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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24 | // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ARIBA PROJECT OR
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25 | // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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26 | // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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27 | // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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28 | // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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29 | // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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30 | // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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31 | // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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32 | //
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33 | // The views and conclusions contained in the software and documentation
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34 | // are those of the authors and should not be interpreted as representing
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35 | // official policies, either expressed or implied, of the Institute of
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36 | // Telematics.
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37 | // [License]
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38 |
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39 | #include "BaseOverlay.h"
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40 |
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41 | #include "ariba/utility/misc/OvlVis.h"
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42 | #include "ariba/NodeListener.h"
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43 | #include "ariba/CommunicationListener.h"
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44 | #include "ariba/SideportListener.h"
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45 |
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46 | #include "ariba/overlay/messages/OverlayMsg.h"
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47 | #include "ariba/overlay/messages/JoinRequest.h"
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48 | #include "ariba/overlay/messages/JoinReply.h"
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49 | #include "ariba/overlay/messages/LinkRequest.h"
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50 |
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51 | namespace ariba {
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52 | namespace overlay {
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53 |
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54 | use_logging_cpp(BaseOverlay);
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55 |
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56 | BaseOverlay::BaseOverlay()
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57 | : bc(NULL), overlayInterface(NULL), nodeId(NodeID::UNSPECIFIED),
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58 | spovnetId(SpoVNetID::UNSPECIFIED), initiatorLink(LinkID::UNSPECIFIED),
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59 | state(BaseOverlayStateInvalid), sideport(&SideportListener::DEFAULT){
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60 | }
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61 |
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62 | BaseOverlay::~BaseOverlay(){
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63 | }
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64 |
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65 | void BaseOverlay::start( BaseCommunication& _basecomm, const NodeID& _nodeid ){
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66 |
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67 | bc = &_basecomm;
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68 | nodeId = _nodeid;
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69 |
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70 | logging_info("creating base overlay");
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71 |
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72 | bc->registerMessageReceiver( this );
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73 | bc->registerEventListener( this );
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74 |
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75 | ovl.visCreate( ovlId, nodeId, string(""), string("") );
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76 | ovl.visChangeNodeColor(ovlId, nodeId, OvlVis::NODE_COLORS_GREY);
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77 |
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78 | // if (Identifier(Configuration::instance().read<unsigned long>("BASE_nodeid")) ==
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79 | // Identifier(Configuration::instance().read<unsigned long>("SOURCE"))) {
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80 | // ovl.visChangeNodeIcon(ovlId, nodeId, OvlVis::ICON_ID_CAMERA);
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81 | // } else if (Identifier(Configuration::instance().read<unsigned long>("BASE_nodeid")) ==
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82 | // Identifier(Configuration::instance().read<unsigned long>("MR_A"))) {
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83 | // ovl.visChangeNodeIcon(ovlId, nodeId, OvlVis::ICON_ID_CHARACTER_A);
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84 | // } else if (Identifier(Configuration::instance().read<unsigned long>("BASE_nodeid")) ==
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85 | // Identifier(Configuration::instance().read<unsigned long>("MR_W"))) {
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86 | // ovl.visChangeNodeIcon(ovlId, nodeId, OvlVis::ICON_ID_CHARACTER_W);
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87 | // }
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88 |
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89 | // timer for auto link management
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90 | Timer::setInterval( 5000 );
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91 | Timer::start();
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92 | }
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93 |
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94 | void BaseOverlay::stop() {
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95 |
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96 | logging_info("deleting base overlay");
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97 |
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98 | Timer::stop();
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99 | bc->unregisterMessageReceiver( this );
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100 | bc->unregisterEventListener( this );
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101 | }
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102 |
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103 | void BaseOverlay::joinSpoVNet(const SpoVNetID& id, const EndpointDescriptor& bootstrapEp){
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104 |
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105 | ovl.visShowNodeBubble ( ovlId, nodeId, "joining..." );
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106 | logging_info( "starting to join spovnet " << id.toString() <<
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107 | " with nodeid " << nodeId.toString());
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108 |
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109 | //
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110 | // contact the spovnet initiator and request
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111 | // to join. if the join is granted we will
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112 | // receive further information on the structure
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113 | // of the overlay that is used in the spovnet
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114 | //
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115 | // but first, we have to establish a link to the initiator...
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116 | //
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117 |
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118 | spovnetId = id;
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119 | state = BaseOverlayStateJoinInitiated;
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120 |
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121 | initiatorLink = bc->establishLink( bootstrapEp );
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122 | logging_info("join process initiated for " << id.toString() << "...");
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123 | }
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124 |
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125 | void BaseOverlay::leaveSpoVNet(){
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126 |
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127 | logging_info( "leaving spovnet " << spovnetId );
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128 | bool ret = ( state != this->BaseOverlayStateInvalid );
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129 |
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130 | logging_debug( "dropping all auto-links ..." );
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131 |
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132 | // now we start leaving the spovnet: fist delete all links
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133 | // that we still have in the baseoverlay initiated by
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134 | // some services, the leave the actual overlay structure,
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135 | // then leave the spovnet
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136 |
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137 | // --> drop all service links
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138 |
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139 | vector<LinkID> servicelinks;
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140 | BOOST_FOREACH( LinkPair item, linkMapping ){
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141 | if( item.second.service != OverlayInterface::OVERLAY_SERVICE_ID )
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142 | servicelinks.push_back( item.first );
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143 | }
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144 | BOOST_FOREACH( LinkID lnk, servicelinks ){
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145 | // the dropLink function will remove
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146 | // the item from the linkMapping
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147 | dropLink( lnk );
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148 | }
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149 |
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150 | // --> leave overlay structure
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151 |
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152 | logging_debug( "leaving overlay" );
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153 | // first, leave the overlay interface
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154 | if( overlayInterface != NULL )
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155 | overlayInterface->leaveOverlay();
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156 |
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157 | // --> leave spovnet
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158 |
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159 | if( state != BaseOverlayStateInitiator ){
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160 |
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161 | // then, leave the spovnet baseoverlay
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162 | OverlayMsg overMsg( OverlayMsg::OverlayMessageTypeBye, nodeId );
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163 | bc->sendMessage( initiatorLink, &overMsg );
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164 |
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165 | // drop the link and set to correct state
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166 | bc->dropLink( initiatorLink );
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167 | initiatorLink = LinkID::UNSPECIFIED;
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168 | }
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169 |
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170 | state = BaseOverlayStateInvalid;
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171 | ovl.visShutdown( ovlId, nodeId, string("") );
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172 |
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173 | // inform all registered services of the event
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174 | BOOST_FOREACH( NodeListener* i, nodeListeners ){
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175 | if( ret ) i->onLeaveCompleted( spovnetId );
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176 | else i->onLeaveFailed( spovnetId );
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177 | }
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178 | }
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179 |
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180 | void BaseOverlay::createSpoVNet(const SpoVNetID& id, const OverlayParameterSet& param, const SecurityParameterSet& sec, const QoSParameterSet& qos){
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181 |
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182 | // set the state that we are an initiator, this way incoming messages are
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183 | // handled correctly
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184 | logging_info( "creating spovnet " + id.toString() <<
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185 | " with nodeid " << nodeId.toString() );
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186 |
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187 | spovnetId = id;
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188 | state = BaseOverlayStateInitiator;
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189 |
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190 | overlayInterface = OverlayFactory::create( *this, param, nodeId, this );
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191 | if( overlayInterface == NULL ){
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192 | logging_fatal( "overlay structure not supported" );
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193 | state = BaseOverlayStateInvalid;
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194 | return;
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195 | }
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196 |
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197 | // bootstrap against ourselfs
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198 | overlayInterface->joinOverlay();
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199 | BOOST_FOREACH( NodeListener* i, nodeListeners )
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200 | i->onJoinCompleted( spovnetId );
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201 |
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202 | ovl.visChangeNodeIcon ( ovlId, nodeId, OvlVis::ICON_ID_CAMERA );
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203 | ovl.visChangeNodeColor( ovlId, nodeId, OvlVis::NODE_COLORS_GREEN);
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204 | }
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205 |
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206 |
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207 | /// establishes a link between two arbitrary nodes
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208 | const LinkID BaseOverlay::establishLink( const NodeID& node,
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209 | const ServiceID& service, const LinkID& link_id ) {
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210 |
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211 | if( !communicationListeners.contains( service ) ){
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212 | logging_error( "no registered listener on serviceid " << service.toString() );
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213 | return LinkID::UNSPECIFIED;
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214 | }
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215 |
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216 | // copy link id
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217 | LinkID linkid = link_id;
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218 |
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219 | // create link id if necessary
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220 | if (linkid.isUnspecified()) linkid = LinkID::create();
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221 |
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222 | // debug message
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223 | logging_debug( "BaseOverlay called to establish link between node " <<
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224 | node.toString() << " for service " << service.toString() );
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225 |
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226 | // create link request message with own link id
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227 | OverlayMsg overlay_msg( OverlayMsg::OverlayMessageTypeLinkRequest, service, nodeId );
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228 | uint32_t nonce = (uint32_t)(rand() ^ (rand() << 16) ^ time(NULL));
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229 | LinkRequest link_request_msg( nonce, &bc->getEndpointDescriptor() );
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230 | overlay_msg.encapsulate( &link_request_msg );
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231 | pendingLinks.insert( make_pair(nonce, linkid) );
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232 |
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233 | // debug message
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234 | logging_debug( "BaseOverlay routes LinkRequest message to node " << node.toString() );
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235 |
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236 | // route message to overlay node
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237 | overlayInterface->routeMessage( node, &overlay_msg );
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238 |
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239 | CommunicationListener* receiver = communicationListeners.get( service );
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240 | assert( receiver != NULL );
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241 |
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242 | LinkItem item (linkid, NodeID::UNSPECIFIED, service, receiver);
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243 | linkMapping.insert( make_pair(linkid, item) );
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244 |
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245 | return linkid;
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246 | }
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247 |
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248 | const LinkID BaseOverlay::establishLink( const EndpointDescriptor& ep,
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249 | const ServiceID& service, const LinkID& linkid ){
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250 |
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251 | if( !communicationListeners.contains( service ) ){
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252 | logging_error( "no registered listener on serviceid " << service.toString() );
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253 | return LinkID::UNSPECIFIED;
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254 | }
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255 |
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256 | const LinkID link = bc->establishLink( ep, linkid );
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257 |
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258 | CommunicationListener* receiver = communicationListeners.get( service );
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259 | assert( receiver != NULL );
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260 |
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261 | LinkItem item (link, NodeID::UNSPECIFIED, service, receiver);
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262 | linkMapping.insert( make_pair(link, item) );
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263 |
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264 | return link;
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265 | }
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266 |
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267 | void BaseOverlay::dropLink(const LinkID& link){
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268 |
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269 | logging_debug( "baseoverlay dropping link " << link.toString() );
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270 | LinkMapping::iterator i = linkMapping.find( link );
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271 |
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272 | // find the link item to drop
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273 | if( i == linkMapping.end() ){
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274 | logging_warn( "can't drop link, mapping unknown " << link.toString() );
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275 | return;
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276 | }
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277 |
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278 | LinkItem item = i->second;
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279 |
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280 | // delete all queued messages
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281 | if( item.waitingmsg.size() > 0 ){
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282 |
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283 | logging_warn( "dropping link " << link.toString() <<
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284 | " that has " << item.waitingmsg.size() << " waiting messages" );
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285 |
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286 | item.deleteWaiting();
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287 | }
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288 |
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289 | // erase the mapping and drop the link
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290 | linkMapping.erase( i );
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291 | bc->dropLink( link );
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292 |
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293 | // tell sideports and listeners of the drop
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294 | item.interface->onLinkDown( link, item.node );
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295 | sideport->onLinkDown(link, this->nodeId, item.node, this->spovnetId );
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296 | }
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297 |
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298 | seqnum_t BaseOverlay::sendMessage(const Message* message, const LinkID& link ){
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299 |
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300 | logging_debug( "baseoverlay is sending data message on link " << link.toString() );
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301 |
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302 | //
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303 | // get the mapping for this link
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304 | //
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305 |
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306 | LinkMapping::iterator i = linkMapping.find( link );
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307 | if( i == linkMapping.end() ){
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308 | logging_error( "could not send message. link not found " << link.toString() );
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309 | return -1;
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310 | }
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311 |
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312 | i->second.markused();
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313 |
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314 | //
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315 | // check if the link is up yet, if its an autlink queue message
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316 | //
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317 |
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318 | if( !i->second.linkup ){
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319 |
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320 | if( i->second.autolink ){
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321 | logging_info( "auto link " << link.toString() << " is not up yet, queueing message" );
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322 | i->second.waitingmsg.push_back( new Message(*message) );
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323 | } else {
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324 | logging_error("link " << link.toString() << " is not up yet, dropping message" );
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325 | }
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326 |
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327 | return -1;
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328 | }
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329 |
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330 | //
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331 | // send the message through the basecomm
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332 | //
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333 |
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334 | OverlayMsg overmsg( OverlayMsg::OverlayMessageTypeData, i->second.service, nodeId );
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335 | overmsg.encapsulate( const_cast<Message*>(message) );
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336 |
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337 | return bc->sendMessage( link, &overmsg );
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338 | }
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339 |
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340 | seqnum_t BaseOverlay::sendMessage(const Message* message, const NodeID& node, const ServiceID& service){
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341 |
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342 | LinkID link = LinkID::UNSPECIFIED;
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343 |
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344 | LinkMapping::iterator i = linkMapping.begin();
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345 | LinkMapping::iterator iend = linkMapping.end();
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346 |
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347 | //
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348 | // see if we find a link for this node and service destination
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349 | //
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350 |
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351 | for( ; i != iend; i++ ){
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352 | if( i->second.node == node && i->second.service == service ){
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353 | link = i->second.link;
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354 | break;
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355 | }
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356 | }
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357 |
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358 | //
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359 | // if we found no link, create an auto link
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360 | //
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361 |
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362 | if( link == LinkID::UNSPECIFIED ){
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363 |
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364 | logging_info( "no link could be found to send message to node " <<
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365 | node.toString() << " for service " << service.toString() <<
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366 | ". creating auto link ...");
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367 |
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368 | // call basecomm to create a link
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369 | link = establishLink( node, service );
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370 |
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371 | // this will call onlinkup on us, if everything worked we now have a mapping
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372 | LinkMapping::iterator i = linkMapping.find( link );
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373 | i->second.autolink = true;
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374 |
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375 | if( i == linkMapping.end() || link == LinkID::UNSPECIFIED ){
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376 | logging_error( "failed to establish auto link to node " << node.toString() <<
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377 | " for service " << service.toString() );
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378 | return -1;
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379 | }
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380 |
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381 | logging_debug( "establishing autolink in progress to node "
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382 | << node.toString() << " with new link-id " << link.toString() );
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383 |
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384 | } // if( link != LinkID::UNSPECIFIED )
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385 |
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386 | assert( link != LinkID::UNSPECIFIED );
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387 |
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388 | // mark the link as used, as we
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389 | // now send a message through it
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390 | i->second.markused();
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391 |
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392 | // send the message through the new link. the link may not be functional,
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393 | // but for us there is a link-id so we can send messages through it. if
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394 | // the link is not yet up and the message needs to be cached, this is the
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395 | // task of the BaseCommunication, it will cache and send it later.
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396 | return sendMessage( message, link );
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397 | }
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398 |
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399 | const EndpointDescriptor& BaseOverlay::getEndpointDescriptor(const LinkID& link) const {
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400 |
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401 | return bc->getEndpointDescriptor( link );
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402 | }
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403 |
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404 | const EndpointDescriptor& BaseOverlay::getEndpointDescriptor(const NodeID& node) const {
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405 |
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406 | if( node == nodeId || node == NodeID::UNSPECIFIED )
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407 | return bc->getEndpointDescriptor();
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408 |
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409 | if( overlayInterface == NULL ){
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410 | logging_error( "overlay interface not set, cannot resolve endpoint" );
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411 | return EndpointDescriptor::UNSPECIFIED;
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412 | }
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413 |
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414 | // TODO: if this is not a onehop overlay the operation will go asynchronously
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415 | return overlayInterface->resolveNode( node );
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416 | }
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417 |
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418 |
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419 | bool BaseOverlay::bind(CommunicationListener* listener, const ServiceID& sid){
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420 | logging_debug( "binding communication listener " << listener
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421 | << " on serviceid " << sid.toString() );
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422 |
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423 | if( communicationListeners.contains( sid ) ){
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424 | logging_error( "some listener already registered for service id "
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425 | << sid.toString() );
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426 | return false;
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427 | }
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428 |
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429 | communicationListeners.registerItem( listener, sid );
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430 | return true;
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431 | }
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432 |
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433 | bool BaseOverlay::registerSidePort(SideportListener* _sideport){
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434 | sideport = _sideport;
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435 | _sideport->configure( this );
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436 | }
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437 |
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438 | bool BaseOverlay::unregisterSidePort(SideportListener* _sideport){
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439 | sideport = &SideportListener::DEFAULT;
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440 | }
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441 |
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442 | bool BaseOverlay::unbind(CommunicationListener* listener, const ServiceID& sid){
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443 | logging_debug( "unbinding listener " << listener
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444 | << " from serviceid " << sid.toString() );
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445 |
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446 | if( !communicationListeners.contains( sid ) ){
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447 | logging_warn( "cannot unbind listener. no listener registered on service id " << sid.toString() );
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448 | return false;
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449 | }
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450 |
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451 | if( communicationListeners.get(sid) != listener ){
|
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452 | logging_warn( "listener bound to service id " << sid.toString()
|
---|
453 | << " is different than listener trying to unbind" );
|
---|
454 | return false;
|
---|
455 | }
|
---|
456 |
|
---|
457 | communicationListeners.unregisterItem( sid );
|
---|
458 | return true;
|
---|
459 | }
|
---|
460 |
|
---|
461 | bool BaseOverlay::bind(NodeListener* listener){
|
---|
462 | logging_debug( "binding node listener " << listener );
|
---|
463 |
|
---|
464 | NodeListenerVector::iterator i = find( nodeListeners.begin(), nodeListeners.end(), listener );
|
---|
465 | if( i != nodeListeners.end() ){
|
---|
466 | logging_warn( "node listener " << listener << " is already bound, cannot bind" );
|
---|
467 | return false;
|
---|
468 | }
|
---|
469 |
|
---|
470 | nodeListeners.push_back( listener );
|
---|
471 | return true;
|
---|
472 | }
|
---|
473 |
|
---|
474 | bool BaseOverlay::unbind(NodeListener* listener){
|
---|
475 | logging_debug( "unbinding node listener " << listener );
|
---|
476 |
|
---|
477 | NodeListenerVector::iterator i = find( nodeListeners.begin(), nodeListeners.end(), listener );
|
---|
478 | if( i == nodeListeners.end() ){
|
---|
479 | logging_warn( "node listener " << listener << " is not bound, cannot unbind" );
|
---|
480 | return false;
|
---|
481 | }
|
---|
482 |
|
---|
483 | nodeListeners.erase( i );
|
---|
484 | return true;
|
---|
485 | }
|
---|
486 |
|
---|
487 | void BaseOverlay::onLinkUp(const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote){
|
---|
488 |
|
---|
489 | logging_debug( "base overlay received linkup event " + id.toString() );
|
---|
490 | // TODO: updateOvlVis( getNodeID(id) );
|
---|
491 |
|
---|
492 | //
|
---|
493 | // if we get up a link while we are in the
|
---|
494 | // join phase and this is the link that
|
---|
495 | // we have initiated towards the spovnet owner
|
---|
496 | // continue the join process by sending
|
---|
497 | // a join request message through the link
|
---|
498 | //
|
---|
499 |
|
---|
500 | if( state == BaseOverlayStateJoinInitiated && id == initiatorLink){
|
---|
501 |
|
---|
502 | logging_info(
|
---|
503 | "Join has been initiated by me and the link is now up. " <<
|
---|
504 | "sending out join request for SpoVNet " << spovnetId.toString()
|
---|
505 | );
|
---|
506 |
|
---|
507 | OverlayMsg overMsg( OverlayMsg::OverlayMessageTypeJoinRequest, nodeId );
|
---|
508 | JoinRequest joinmsg( spovnetId, nodeId );
|
---|
509 | overMsg.encapsulate( &joinmsg );
|
---|
510 |
|
---|
511 | state = BaseOverlayStateJoinInitiated; // state remains in JoinInitiated
|
---|
512 | bc->sendMessage( id, &overMsg );
|
---|
513 |
|
---|
514 | return;
|
---|
515 |
|
---|
516 | } // if( state == BaseOverlayStateJoinInitiated && id == initiatorLink)
|
---|
517 |
|
---|
518 | //
|
---|
519 | // otherwise this is a link initiated by a service
|
---|
520 | // then we exchange update messages to exchange the
|
---|
521 | // service id and node id for the link. in this case
|
---|
522 | // we should have a link mapping for this link. if
|
---|
523 | // we have no link mapping this link was initiated by
|
---|
524 | // the remote side.
|
---|
525 | //
|
---|
526 |
|
---|
527 | LinkMapping::iterator i = linkMapping.find( id );
|
---|
528 |
|
---|
529 | if( i == linkMapping.end() ){
|
---|
530 |
|
---|
531 | LinkItem item (id, NodeID::UNSPECIFIED, ServiceID::UNSPECIFIED, &CommunicationListener::DEFAULT );
|
---|
532 | linkMapping.insert( make_pair(id, item) );
|
---|
533 |
|
---|
534 | } else {
|
---|
535 |
|
---|
536 | logging_debug( "sending out OverlayMessageTypeUpdate" <<
|
---|
537 | " for service " << i->second.service.toString() <<
|
---|
538 | " with local node id " << nodeId.toString() <<
|
---|
539 | " on link " << id.toString() );
|
---|
540 |
|
---|
541 | OverlayMsg overMsg(
|
---|
542 | OverlayMsg::OverlayMessageTypeUpdate,
|
---|
543 | i->second.service,
|
---|
544 | nodeId
|
---|
545 | );
|
---|
546 |
|
---|
547 | bc->sendMessage( id, &overMsg );
|
---|
548 | i->second.markused();
|
---|
549 |
|
---|
550 | } // if( i == linkMapping.end() )
|
---|
551 |
|
---|
552 | // the link is only valid for the service when we receive
|
---|
553 | // the OverlayMessageTypeUpdate from the remote node and
|
---|
554 | // have the nodeid and serviceid for the link!
|
---|
555 | }
|
---|
556 |
|
---|
557 | void BaseOverlay::onLinkDown(const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote){
|
---|
558 |
|
---|
559 | logging_debug( "link went down " << id.toString() );
|
---|
560 |
|
---|
561 | //
|
---|
562 | // tell the service that the link went
|
---|
563 | // down and remove the mapping
|
---|
564 | //
|
---|
565 |
|
---|
566 | LinkMapping::iterator i = linkMapping.find( id );
|
---|
567 | if( i == linkMapping.end() ) {
|
---|
568 | // this can also be one of the baseoverlay links that
|
---|
569 | // no mapping is stored for. therefore we issue no warning.
|
---|
570 | // it can also be a link that has been dropped and the
|
---|
571 | // mapping is already deleted in the dropLink function.
|
---|
572 | // also, the service notification is issued then in dropLink
|
---|
573 | return;
|
---|
574 | }
|
---|
575 |
|
---|
576 | i->second.interface->onLinkDown( id, i->second.node );
|
---|
577 | sideport->onLinkDown( id, this->nodeId, i->second.node, this->spovnetId );
|
---|
578 |
|
---|
579 | // delete all queued messages
|
---|
580 | if( i->second.waitingmsg.size() > 0 ){
|
---|
581 |
|
---|
582 | logging_warn( "dropping link " << id.toString() <<
|
---|
583 | " that has " << i->second.waitingmsg.size() << " waiting messages" );
|
---|
584 |
|
---|
585 | i->second.deleteWaiting();
|
---|
586 | }
|
---|
587 |
|
---|
588 | linkMapping.erase( i );
|
---|
589 | }
|
---|
590 |
|
---|
591 | void BaseOverlay::onLinkChanged(const LinkID& id, const NetworkLocator* oldlocal, const NetworkLocator* newlocal, const NetworkLocator* oldremote, const NetworkLocator* newremote){
|
---|
592 |
|
---|
593 | logging_debug( "link changed " << id.toString() );
|
---|
594 |
|
---|
595 | //
|
---|
596 | // tell the service that the link changed
|
---|
597 | //
|
---|
598 |
|
---|
599 | LinkMapping::iterator i = linkMapping.find( id );
|
---|
600 | if( i == linkMapping.end() ) return;
|
---|
601 |
|
---|
602 | i->second.interface->onLinkChanged( id, i->second.node );
|
---|
603 | sideport->onLinkChanged( id, this->nodeId, i->second.node, this->spovnetId );
|
---|
604 |
|
---|
605 | // TODO call onLinkQoSChanged?
|
---|
606 |
|
---|
607 | i->second.markused();
|
---|
608 | }
|
---|
609 |
|
---|
610 | void BaseOverlay::onLinkFail(const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote){
|
---|
611 |
|
---|
612 | logging_debug( "link failed " << id.toString() );
|
---|
613 |
|
---|
614 | //
|
---|
615 | // tell the service that the link failed
|
---|
616 | //
|
---|
617 |
|
---|
618 | LinkMapping::iterator i = linkMapping.find( id );
|
---|
619 | if( i == linkMapping.end() ) return;
|
---|
620 |
|
---|
621 | i->second.interface->onLinkFail( id, i->second.node );
|
---|
622 | sideport->onLinkFail( id, this->nodeId, i->second.node, this->spovnetId );
|
---|
623 |
|
---|
624 | i->second.markused();
|
---|
625 | }
|
---|
626 |
|
---|
627 | void BaseOverlay::onLinkQoSChanged(const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote, const QoSParameterSet& qos) {
|
---|
628 |
|
---|
629 | logging_debug( "link qos changed " << id.toString() );
|
---|
630 |
|
---|
631 | //
|
---|
632 | // tell the service that the link qos has changed
|
---|
633 | //
|
---|
634 |
|
---|
635 | LinkMapping::iterator i = linkMapping.find( id );
|
---|
636 | if( i == linkMapping.end() ) return;
|
---|
637 |
|
---|
638 | // TODO: convert QoSParameterSet to the LinkProperties properties
|
---|
639 | // TODO: currently not in the interface: i->second.interface->onLinkQoSChanged( id, i->second.node, LinkProperties::DEFAULT );
|
---|
640 |
|
---|
641 | i->second.markused();
|
---|
642 | }
|
---|
643 |
|
---|
644 | bool BaseOverlay::onLinkRequest( const LinkID& id, const NetworkLocator* local, const NetworkLocator* remote ){
|
---|
645 |
|
---|
646 | // also see in the receiveMessage function. there the higher layer service
|
---|
647 | // is asked whether to accept link requests, but there a basic link association is
|
---|
648 | // already built up, so we know the node id
|
---|
649 | logging_debug("received link request from " << remote->toString() << ", accepting");
|
---|
650 | return true;
|
---|
651 | }
|
---|
652 |
|
---|
653 |
|
---|
654 | bool BaseOverlay::receiveMessage(const Message* message,
|
---|
655 | const LinkID& link, const NodeID&
|
---|
656 | /*the nodeid is invalid in this case! removed var to prevent errors*/ ){
|
---|
657 |
|
---|
658 | // decapsulate overlay message
|
---|
659 | logging_debug( "receiveMessage: " << message->toString());
|
---|
660 | OverlayMsg* overlayMsg = const_cast<Message*>(message)->decapsulate<OverlayMsg>();
|
---|
661 | if( overlayMsg == NULL ) return false;
|
---|
662 |
|
---|
663 | // mark the link as in action
|
---|
664 | LinkMapping::iterator item = linkMapping.find( link );
|
---|
665 | if( item != linkMapping.end() ) item->second.markused();
|
---|
666 |
|
---|
667 | /* ************************************************************************
|
---|
668 | /* handle user date that we forward to the appropriate service using the
|
---|
669 | * service id in the message. as we don't know the class of message that
|
---|
670 | * the service handles, we forward it as a pure Message
|
---|
671 | */
|
---|
672 | if( overlayMsg->isType(OverlayMsg::OverlayMessageTypeData) ) {
|
---|
673 |
|
---|
674 | logging_debug( "baseoverlay received message of type OverlayMessageTypeData" );
|
---|
675 |
|
---|
676 | const ServiceID& service = overlayMsg->getService();
|
---|
677 | CommunicationListener* serviceListener = communicationListeners.get( service );
|
---|
678 |
|
---|
679 | logging_debug( "received data for service " << service.toString() );
|
---|
680 |
|
---|
681 | if( serviceListener != NULL )
|
---|
682 | serviceListener->onMessage( overlayMsg, overlayMsg->getSourceNode(), link );
|
---|
683 |
|
---|
684 | return true;
|
---|
685 |
|
---|
686 | } // if( overlayMsg->isType(OverlayMsg::OverlayMessageTypeData) )
|
---|
687 |
|
---|
688 | /* ************************************************************************
|
---|
689 | /* Handle spovnet instance join requests
|
---|
690 | */
|
---|
691 | else if( overlayMsg->isType(OverlayMsg::OverlayMessageTypeJoinRequest) &&
|
---|
692 | state == BaseOverlayStateInitiator){
|
---|
693 |
|
---|
694 | logging_debug(
|
---|
695 | "baseoverlay received message of type OverlayMessageTypeJoinRequest"
|
---|
696 | );
|
---|
697 |
|
---|
698 | JoinRequest* joinReq = overlayMsg->decapsulate<JoinRequest>();
|
---|
699 | logging_info( "received join request for spovnet " <<
|
---|
700 | joinReq->getSpoVNetID().toString() );
|
---|
701 |
|
---|
702 | /* make sure that the node actually wants to join
|
---|
703 | * the correct spovnet id that we administrate */
|
---|
704 | if( joinReq->getSpoVNetID() != spovnetId ){
|
---|
705 | logging_error( "received join request for spovnet we don't handle " <<
|
---|
706 | joinReq->getSpoVNetID().toString() );
|
---|
707 | return false;
|
---|
708 | }
|
---|
709 |
|
---|
710 | //
|
---|
711 | // only if all services allow the node to join it is allowed
|
---|
712 | // using the isJoinAllowed interface security policies can be
|
---|
713 | // implemented by higher layer services
|
---|
714 | //
|
---|
715 |
|
---|
716 | // TODO: here you can implement mechanisms to deny joining of a node
|
---|
717 | bool allow = true;
|
---|
718 |
|
---|
719 | logging_info( "sending back join reply for spovnet " <<
|
---|
720 | spovnetId.toString() << " to node " <<
|
---|
721 | overlayMsg->getSourceNode().toString() <<
|
---|
722 | ". result: " << (allow ? "allowed" : "denied") );
|
---|
723 |
|
---|
724 | joiningNodes.push_back( overlayMsg->getSourceNode() );
|
---|
725 |
|
---|
726 | // send back our spovnetid, default overlay parameters, join allow
|
---|
727 | // result, and ourself as the end-point to bootstrap the overlay against
|
---|
728 | OverlayMsg retmsg( OverlayMsg::OverlayMessageTypeJoinReply, nodeId );
|
---|
729 | JoinReply replyMsg( spovnetId, OverlayParameterSet::DEFAULT,
|
---|
730 | allow, getEndpointDescriptor() );
|
---|
731 |
|
---|
732 | retmsg.encapsulate(&replyMsg);
|
---|
733 | bc->sendMessage( link, &retmsg );
|
---|
734 |
|
---|
735 | return true;
|
---|
736 |
|
---|
737 | } // else if( overlayMsg->isType(OverlayMsg::OverlayMessageTypeJoinRequest)
|
---|
738 | // && state == BaseOverlayStateInitiator)
|
---|
739 |
|
---|
740 | /* ************************************************************************
|
---|
741 | * handle replies to spovnet instance join requests
|
---|
742 | */
|
---|
743 | else if( overlayMsg->isType(OverlayMsg::OverlayMessageTypeJoinReply) &&
|
---|
744 | state == BaseOverlayStateJoinInitiated){
|
---|
745 |
|
---|
746 | logging_debug(
|
---|
747 | "baseoverlay received message of type OverlayMessageTypeJoinReply");
|
---|
748 |
|
---|
749 | JoinReply* replyMsg = overlayMsg->decapsulate<JoinReply>();
|
---|
750 | logging_info( "received spovnet join reply" );
|
---|
751 |
|
---|
752 | // ensure that we actually wanted to get into the spovnet whose id is
|
---|
753 | // in the message
|
---|
754 | if( replyMsg->getSpoVNetID() != spovnetId ){
|
---|
755 | logging_error( "received spovnet join reply for spovnet " <<
|
---|
756 | replyMsg->getSpoVNetID().toString() <<
|
---|
757 | " but we wanted to join spovnet " <<
|
---|
758 | spovnetId.toString() );
|
---|
759 |
|
---|
760 | // state does not change here, maybe the reply does come in later
|
---|
761 | return false;
|
---|
762 | }
|
---|
763 |
|
---|
764 | // if we did not get access to the spovnet notify of the failure and
|
---|
765 | // close the link to the initiator
|
---|
766 | if( ! replyMsg->getJoinAllowed() ){
|
---|
767 |
|
---|
768 | logging_error( "our join request has been denied" );
|
---|
769 |
|
---|
770 | bc->dropLink( initiatorLink );
|
---|
771 | initiatorLink = LinkID::UNSPECIFIED;
|
---|
772 | state = BaseOverlayStateInvalid;
|
---|
773 |
|
---|
774 | // inform all registered services of the event
|
---|
775 | BOOST_FOREACH( NodeListener* i, nodeListeners ){
|
---|
776 | i->onJoinFailed( spovnetId );
|
---|
777 | }
|
---|
778 |
|
---|
779 | return true;
|
---|
780 | }
|
---|
781 |
|
---|
782 | logging_info( "join request has been accepted for spovnet " <<
|
---|
783 | spovnetId.toString() );
|
---|
784 |
|
---|
785 | // if we did get access to the spovnet we try to create the overlay
|
---|
786 | // structure as given in the reply message
|
---|
787 | overlayInterface = OverlayFactory::create( *this,
|
---|
788 | replyMsg->getParam(), nodeId, this );
|
---|
789 |
|
---|
790 | if( overlayInterface == NULL ){
|
---|
791 | logging_error( "overlay structure not supported" );
|
---|
792 |
|
---|
793 | bc->dropLink( initiatorLink );
|
---|
794 | initiatorLink = LinkID::UNSPECIFIED;
|
---|
795 | state = BaseOverlayStateInvalid;
|
---|
796 |
|
---|
797 | // inform all registered services of the event
|
---|
798 | BOOST_FOREACH( NodeListener* i, nodeListeners )
|
---|
799 | i->onJoinFailed( spovnetId );
|
---|
800 |
|
---|
801 | return true;
|
---|
802 | }
|
---|
803 |
|
---|
804 | /* now start the join process for the overlay. the join process for the
|
---|
805 | * spovnet baseoverlay is now complete. we use the endpoint for overlay
|
---|
806 | * structure bootstrapping that the initiator provided in his reply
|
---|
807 | * message */
|
---|
808 | state = BaseOverlayStateCompleted;
|
---|
809 | ovl.visChangeNodeColor( ovlId, nodeId, OvlVis::NODE_COLORS_GREEN);
|
---|
810 |
|
---|
811 | overlayInterface->createOverlay();
|
---|
812 | overlayInterface->joinOverlay( replyMsg->getBootstrapEndpoint() );
|
---|
813 |
|
---|
814 | // inform all registered services of the event
|
---|
815 | BOOST_FOREACH( NodeListener* i, nodeListeners ){
|
---|
816 | i->onJoinCompleted( spovnetId );
|
---|
817 | }
|
---|
818 |
|
---|
819 | return true;
|
---|
820 |
|
---|
821 | } // else if( overlayMsg->isType(OverlayMsg::OverlayMessageTypeJoinReply) && state == BaseOverlayStateJoinInitiated)
|
---|
822 |
|
---|
823 |
|
---|
824 | /* ************************************************************************
|
---|
825 | * handle update messages for link establishment
|
---|
826 | */
|
---|
827 | else if( overlayMsg->isType(OverlayMsg::OverlayMessageTypeUpdate) ){
|
---|
828 |
|
---|
829 | logging_debug(
|
---|
830 | "baseoverlay received message of type OverlayMessageTypeUpdate"
|
---|
831 | );
|
---|
832 |
|
---|
833 | const NodeID& sourcenode = overlayMsg->getSourceNode();
|
---|
834 | const ServiceID& service = overlayMsg->getService();
|
---|
835 |
|
---|
836 | // linkmapping for the link available? no-> ignore
|
---|
837 | LinkMapping::iterator i = linkMapping.find( link );
|
---|
838 | if( i == linkMapping.end() ) {
|
---|
839 | logging_warn( "received overlay update message for link " <<
|
---|
840 | link.toString() << " for which we have no mapping" );
|
---|
841 | return false;
|
---|
842 | }
|
---|
843 |
|
---|
844 | // update our link mapping information for this link
|
---|
845 | bool changed = ( i->second.node != sourcenode ) || ( i->second.service != service );
|
---|
846 | i->second.node = sourcenode;
|
---|
847 | i->second.service = service;
|
---|
848 |
|
---|
849 | // if our link information changed, we send out an update, too
|
---|
850 | if( changed ){
|
---|
851 | OverlayMsg overMsg( OverlayMsg::OverlayMessageTypeUpdate, i->second.service, nodeId );
|
---|
852 | bc->sendMessage( link, &overMsg );
|
---|
853 | }
|
---|
854 |
|
---|
855 | // set the correct listener service for the linkitem
|
---|
856 | // now we can tell the registered service of the linkup event
|
---|
857 | if( !communicationListeners.contains( service ) ){
|
---|
858 | logging_warn( "linkup event for service that has not been registered" );
|
---|
859 | return false;
|
---|
860 | }
|
---|
861 |
|
---|
862 | CommunicationListener* iface = communicationListeners.get( service );
|
---|
863 | if( iface == NULL || iface == &CommunicationListener::DEFAULT ){
|
---|
864 | logging_warn( "linkup event for service that has been registered "
|
---|
865 | "with a NULL interface" );
|
---|
866 | return true;
|
---|
867 | }
|
---|
868 |
|
---|
869 | i->second.interface = iface;
|
---|
870 | i->second.markused();
|
---|
871 |
|
---|
872 | // ask the service whether it wants to accept this link
|
---|
873 | if( !iface->onLinkRequest(sourcenode) ){
|
---|
874 |
|
---|
875 | logging_debug("link " << link.toString() <<
|
---|
876 | " has been denied by service " << service.toString() << ", dropping link");
|
---|
877 |
|
---|
878 | // prevent onLinkDown calls to the service
|
---|
879 | i->second.interface = &CommunicationListener::DEFAULT;
|
---|
880 | // drop the link
|
---|
881 | dropLink( link );
|
---|
882 |
|
---|
883 | return true;
|
---|
884 | }
|
---|
885 |
|
---|
886 | //
|
---|
887 | // link has been accepted, link is now up, send messages out first
|
---|
888 | //
|
---|
889 |
|
---|
890 | i->second.linkup = true;
|
---|
891 | logging_debug("link " << link.toString() <<
|
---|
892 | " has been accepted by service " << service.toString() << " and is now up");
|
---|
893 |
|
---|
894 | if( i->second.waitingmsg.size() > 0 ){
|
---|
895 | logging_info( "sending out queued messages on link " << link.toString() );
|
---|
896 |
|
---|
897 | BOOST_FOREACH( Message* msg, i->second.waitingmsg ){
|
---|
898 | sendMessage( msg, link );
|
---|
899 | delete msg;
|
---|
900 | }
|
---|
901 |
|
---|
902 | i->second.waitingmsg.clear();
|
---|
903 | }
|
---|
904 |
|
---|
905 | // call the notification functions
|
---|
906 | iface->onLinkUp( link, sourcenode );
|
---|
907 | sideport->onLinkUp( link, nodeId, sourcenode, this->spovnetId );
|
---|
908 |
|
---|
909 | return true;
|
---|
910 |
|
---|
911 | } // else if( overlayMsg->isType(OverlayMsg::OverlayMessageTypeUpdate) )
|
---|
912 |
|
---|
913 | /* ************************************************************************
|
---|
914 | * handle bye messages
|
---|
915 | */
|
---|
916 | else if( overlayMsg->isType(OverlayMsg::OverlayMessageTypeBye) ) {
|
---|
917 |
|
---|
918 | logging_debug( "BaseOverlay received message of type OverlayMessageTypeBye" );
|
---|
919 | logging_debug( "Received bye message from " <<
|
---|
920 | overlayMsg->getSourceNode().toString() );
|
---|
921 |
|
---|
922 | /* if we are the initiator and receive a bye from a node
|
---|
923 | * the node just left. if we are a node and receive a bye
|
---|
924 | * from the initiator, we have to close, too.
|
---|
925 | */
|
---|
926 | if( overlayMsg->getSourceNode() == spovnetInitiator ){
|
---|
927 |
|
---|
928 | bc->dropLink( initiatorLink );
|
---|
929 | initiatorLink = LinkID::UNSPECIFIED;
|
---|
930 | state = BaseOverlayStateInvalid;
|
---|
931 |
|
---|
932 | logging_fatal( "initiator ended spovnet" );
|
---|
933 |
|
---|
934 | // inform all registered services of the event
|
---|
935 | BOOST_FOREACH( NodeListener* i, nodeListeners ){
|
---|
936 | i->onLeaveFailed( spovnetId );
|
---|
937 | }
|
---|
938 |
|
---|
939 | } else {
|
---|
940 | // a node that said goodbye and we are the initiator don't have to
|
---|
941 | // do much here, as the node also will go out of the overlay
|
---|
942 | // structure
|
---|
943 | logging_info( "node left " << overlayMsg->getSourceNode() );
|
---|
944 | }
|
---|
945 |
|
---|
946 | return true;
|
---|
947 |
|
---|
948 | } // else if( overlayMsg->isType(OverlayMsg::OverlayMessageTypeBye))
|
---|
949 |
|
---|
950 | /* ************************************************************************
|
---|
951 | * handle link request forwarded through the overlay
|
---|
952 | */
|
---|
953 | else if( overlayMsg->isType(OverlayMsg::OverlayMessageTypeLinkRequest)) {
|
---|
954 | LinkRequest* linkReq = overlayMsg->decapsulate<LinkRequest>();
|
---|
955 | const ServiceID& service = overlayMsg->getService();
|
---|
956 | if (linkReq->isReply()) {
|
---|
957 |
|
---|
958 | // find link
|
---|
959 | PendingLinkMap::iterator i = pendingLinks.find( linkReq->getNonce() );
|
---|
960 | if ( i == pendingLinks.end() ) {
|
---|
961 | logging_error( "Nonce not found in link request" );
|
---|
962 | return true;
|
---|
963 | }
|
---|
964 |
|
---|
965 | // debug message
|
---|
966 | logging_debug( "LinkRequest reply received. Establishing link "
|
---|
967 | << i->second << " to " << (linkReq->getEndpoint()->toString())
|
---|
968 | << " for service " << service.toString()
|
---|
969 | << " with nonce " << linkReq->getNonce()
|
---|
970 | );
|
---|
971 |
|
---|
972 | // establishing link
|
---|
973 | bc->establishLink( *linkReq->getEndpoint(), i->second );
|
---|
974 | } else {
|
---|
975 | OverlayMsg overlay_msg( OverlayMsg::OverlayMessageTypeLinkRequest, service, nodeId );
|
---|
976 | LinkRequest link_request_msg(
|
---|
977 | linkReq->getNonce(), &bc->getEndpointDescriptor(), true );
|
---|
978 | overlay_msg.encapsulate( &link_request_msg );
|
---|
979 |
|
---|
980 | // debug message
|
---|
981 | logging_debug( "Sending LinkRequest reply for link with nonce " <<
|
---|
982 | linkReq->getNonce() );
|
---|
983 |
|
---|
984 | // route message back over overlay
|
---|
985 | overlayInterface->routeMessage(
|
---|
986 | overlayMsg->getSourceNode(), &overlay_msg
|
---|
987 | );
|
---|
988 | }
|
---|
989 | } // if( overlayMsg->isType(OverlayMsg::OverlayMessageTypeLinkRequest))
|
---|
990 |
|
---|
991 | /* ************************************************************************
|
---|
992 | * unknown message type ... error!
|
---|
993 | */
|
---|
994 | else {
|
---|
995 |
|
---|
996 | logging_error( "received message in invalid state! don't know " <<
|
---|
997 | "what to do with this message of type " <<
|
---|
998 | overlayMsg->getType() );
|
---|
999 | return false;
|
---|
1000 |
|
---|
1001 | } // else
|
---|
1002 |
|
---|
1003 | return false;
|
---|
1004 | }
|
---|
1005 |
|
---|
1006 | void BaseOverlay::broadcastMessage(Message* message, const ServiceID& service){
|
---|
1007 |
|
---|
1008 | logging_debug( "broadcasting message to all known nodes " <<
|
---|
1009 | "in the overlay from service " + service.toString() );
|
---|
1010 |
|
---|
1011 | OverlayInterface::NodeList nodes = overlayInterface->getKnownNodes();
|
---|
1012 |
|
---|
1013 | OverlayInterface::NodeList::iterator i = nodes.begin();
|
---|
1014 | OverlayInterface::NodeList::iterator iend = nodes.end();
|
---|
1015 |
|
---|
1016 | for( ; i != iend; i++ ){
|
---|
1017 | if( *i == nodeId) continue; // don't send to ourselfs
|
---|
1018 | sendMessage( message, *i, service );
|
---|
1019 | }
|
---|
1020 | }
|
---|
1021 |
|
---|
1022 | vector<NodeID> BaseOverlay::getOverlayNeighbors() const {
|
---|
1023 | // the known nodes _can_ also include our
|
---|
1024 | // node, so we remove ourselfs
|
---|
1025 |
|
---|
1026 | vector<NodeID> nodes = overlayInterface->getKnownNodes();
|
---|
1027 | vector<NodeID>::iterator i = find( nodes.begin(), nodes.end(), this->nodeId );
|
---|
1028 | if( i != nodes.end() ) nodes.erase( i );
|
---|
1029 |
|
---|
1030 | return nodes;
|
---|
1031 | }
|
---|
1032 |
|
---|
1033 | void BaseOverlay::updateOvlVis( const NodeID& n ) {
|
---|
1034 | NodeID node = n;
|
---|
1035 | /* void visShowNodeBubble (
|
---|
1036 | NETWORK_ID network,
|
---|
1037 | NodeID& node,
|
---|
1038 | string label
|
---|
1039 | );
|
---|
1040 | */
|
---|
1041 | using namespace std;
|
---|
1042 |
|
---|
1043 | if (node == nodeId || node.isUnspecified()) return;
|
---|
1044 |
|
---|
1045 | // min/max
|
---|
1046 | if ( node < min || min.isUnspecified() ) min = node;
|
---|
1047 | if ( node > max || max.isUnspecified() ) max = node;
|
---|
1048 |
|
---|
1049 | // successor
|
---|
1050 | if ( succ.isUnspecified() || (node > nodeId && (succ < nodeId || (node-nodeId) < (succ-nodeId))) ) {
|
---|
1051 | if (!succ.isUnspecified() && node != succ)
|
---|
1052 | ovl.visDisconnect(ovlId, nodeId, succ, string(""));
|
---|
1053 | succ = node;
|
---|
1054 | ovl.visConnect(ovlId, nodeId, succ, string(""));
|
---|
1055 | }
|
---|
1056 |
|
---|
1057 | // set successor (circle-wrap)
|
---|
1058 | if (succ.isUnspecified() && !min.isUnspecified()) {
|
---|
1059 | succ = min;
|
---|
1060 | ovl.visConnect(ovlId, nodeId, succ, string(""));
|
---|
1061 | }
|
---|
1062 | }
|
---|
1063 |
|
---|
1064 | const NodeID& BaseOverlay::getNodeID(const LinkID& lid) const {
|
---|
1065 |
|
---|
1066 | if( lid == LinkID::UNSPECIFIED ) return nodeId;
|
---|
1067 |
|
---|
1068 | LinkMapping::const_iterator i = linkMapping.find( lid );
|
---|
1069 | if( i == linkMapping.end() ) return NodeID::UNSPECIFIED;
|
---|
1070 | else return i->second.node;
|
---|
1071 | }
|
---|
1072 |
|
---|
1073 | vector<LinkID> BaseOverlay::getLinkIDs( const NodeID& nid ) const {
|
---|
1074 |
|
---|
1075 | vector<LinkID> linkvector;
|
---|
1076 |
|
---|
1077 | BOOST_FOREACH( LinkPair item, linkMapping ){
|
---|
1078 | if( item.second.node == nid || nid == NodeID::UNSPECIFIED ){
|
---|
1079 | linkvector.push_back( item.second.link );
|
---|
1080 | }
|
---|
1081 | }
|
---|
1082 |
|
---|
1083 | return linkvector;
|
---|
1084 | }
|
---|
1085 |
|
---|
1086 | void BaseOverlay::incomingRouteMessage(Message* msg){
|
---|
1087 | // gets handled as normal data message
|
---|
1088 | receiveMessage( msg, LinkID::UNSPECIFIED, NodeID::UNSPECIFIED );
|
---|
1089 | }
|
---|
1090 |
|
---|
1091 | void BaseOverlay::onNodeJoin(const NodeID& node){
|
---|
1092 |
|
---|
1093 | JoiningNodes::iterator i = std::find( joiningNodes.begin(), joiningNodes.end(), node );
|
---|
1094 | if( i == joiningNodes.end() ) return;
|
---|
1095 |
|
---|
1096 | logging_info( "node has successfully joined baseoverlay and overlay structure "
|
---|
1097 | << node.toString() );
|
---|
1098 |
|
---|
1099 | joiningNodes.erase( i );
|
---|
1100 | }
|
---|
1101 |
|
---|
1102 | void BaseOverlay::eventFunction(){
|
---|
1103 |
|
---|
1104 | list<LinkID> oldlinks;
|
---|
1105 | time_t now = time(NULL);
|
---|
1106 |
|
---|
1107 | // first gather all the links from linkMapping that need droppin
|
---|
1108 | // don't directly drop, as the dropLink function affects the
|
---|
1109 | // linkMapping structure that we are traversing here.
|
---|
1110 | // drop links after a timeout of 30s
|
---|
1111 |
|
---|
1112 | BOOST_FOREACH( LinkPair item, linkMapping ){
|
---|
1113 | if( item.second.autolink && difftime(now, item.second.lastuse) > 30)
|
---|
1114 | oldlinks.push_back( item.first );
|
---|
1115 | }
|
---|
1116 |
|
---|
1117 | BOOST_FOREACH( const LinkID lnk, oldlinks ) {
|
---|
1118 | logging_debug( "auto-link " << lnk.toString() << " timed out and is getting dropped" );
|
---|
1119 | dropLink( lnk );
|
---|
1120 | }
|
---|
1121 | }
|
---|
1122 |
|
---|
1123 | }} // namespace ariba, overlay
|
---|