1 | /* |
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2 | Copyright 2009 Virginia Polytechnic Institute and State University |
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3 | |
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4 | Licensed under the Apache License, Version 2.0 (the "License"); |
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5 | you may not use this file except in compliance with the License. |
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6 | You may obtain a copy of the License at |
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7 | |
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8 | http://www.apache.org/licenses/LICENSE-2.0 |
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9 | |
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10 | Unless required by applicable law or agreed to in writing, software |
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11 | distributed under the License is distributed on an "AS IS" BASIS, |
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12 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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13 | See the License for the specific language governing permissions and |
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14 | limitations under the License. |
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15 | */ |
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16 | |
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17 | #include <cstdlib> |
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18 | #include <cstring> |
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19 | #include <stdint.h> |
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20 | #include <math.h> |
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21 | |
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22 | #include "vtcross/common.h" |
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23 | #include "vtcross/components.h" |
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24 | #include "vtcross/containers.h" |
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25 | #include "vtcross/debug.h" |
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26 | #include "vtcross/error.h" |
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27 | #include "vtcross/socketcomm.h" |
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28 | #include "vtcross/cbr.h" |
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29 | |
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30 | // TODO this is really bad; need to move to a proper cbr.h |
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31 | #include "cbr.c" |
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32 | |
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33 | #include "sqlite3.h" |
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34 | #include "sqlite3ext.h" |
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35 | |
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36 | #define INTERFERENCE 0 |
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37 | |
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38 | #define CHANNEL 1 |
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39 | |
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40 | #define ENERGY 0 |
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41 | #define COMMUNICATION_TIME 1 |
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42 | |
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43 | #define UTILITY 4 |
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44 | |
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45 | |
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46 | |
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47 | static cbr myCBR; |
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48 | |
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49 | |
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50 | CognitiveEngine::CognitiveEngine() |
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51 | { |
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52 | LOG("Creating Cognitive Engine.\n"); |
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53 | SML_present = false; |
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54 | commandSocketFD = -1; |
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55 | srand ( time(NULL) ); |
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56 | } |
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57 | |
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58 | |
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59 | CognitiveEngine::~CognitiveEngine() |
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60 | { |
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61 | cbr_free(myCBR); |
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62 | delete [] pList; |
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63 | delete [] oList; |
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64 | delete [] uList; |
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65 | delete [] radioInfo; |
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66 | } |
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67 | |
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68 | |
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69 | CognitiveEngine::CognitiveEngine(const char *serverName, const char *serverPort, \ |
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70 | const bool SML) |
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71 | { |
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72 | LOG("Creating Cognitive Engine.\n"); |
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73 | |
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74 | pList = new Parameter[10]; |
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75 | oList = new Observable[10]; |
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76 | uList = new Utility[10]; |
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77 | radioInfo = new Radio_Info; |
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78 | |
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79 | ConnectToRemoteComponent(serverName, serverPort, SML); |
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80 | } |
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81 | |
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82 | |
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83 | void |
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84 | CognitiveEngine::SendComponentType() |
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85 | { |
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86 | SendMessage(commandSocketFD, "response_engine_cognitive"); |
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87 | LOG("Cognitive Engine responded to GetRemoteComponentType query.\n"); |
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88 | } |
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89 | |
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90 | |
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91 | void |
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92 | CognitiveEngine::ConnectToRemoteComponent(const char *serverName, \ |
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93 | const char *serverPort, const bool SML) |
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94 | { |
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95 | commandSocketFD = ClientSocket(serverName, serverPort); |
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96 | |
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97 | SML_present = SML; |
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98 | |
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99 | if(SML) { |
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100 | |
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101 | RegisterComponent(); |
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102 | LOG("Cognitive Engine connected to SML at %s.\n", serverName); |
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103 | ReceiveRadioConfiguration(); |
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104 | ReceiveExperience(); |
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105 | |
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106 | RegisterServices(); |
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107 | } |
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108 | else { |
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109 | RegisterComponent(); |
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110 | LOG("Cognitive Engine connected to shell at %s.\n", serverName); |
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111 | ReceiveRadioConfiguration(); |
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112 | ReceiveExperience(); |
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113 | } |
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114 | } |
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115 | |
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116 | void |
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117 | CognitiveEngine::ReceiveFeedback(Observable *observables, Parameter *parameters) |
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118 | { |
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119 | LOG("Cognitive Engine:: Receiving feedback.\n"); |
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120 | |
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121 | uint32_t numberColumns = |
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122 | radioInfo->numParameters; |
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123 | |
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124 | uint32_t obsColumns = radioInfo->numObservables + 1; |
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125 | uint32_t numberTotalColumns = radioInfo->numUtilities + |
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126 | radioInfo->numParameters + |
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127 | radioInfo->numObservables + 1; |
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128 | |
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129 | float valList[numberColumns]; |
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130 | float obsVals[numberColumns]; |
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131 | char *nameList[numberColumns]; |
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132 | char *obsList[obsColumns]; |
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133 | char *searchNames[1]; |
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134 | float searchVals[1]; |
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135 | int searchOps[1]; |
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136 | float returnValues[numberTotalColumns]; |
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137 | |
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138 | size_t columnObsIndex = 0; |
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139 | for (size_t i = 0; i < radioInfo->numObservables; i++){ |
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140 | obsList[columnObsIndex] = (char*)observables[i].name.c_str(); |
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141 | columnObsIndex++; |
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142 | } |
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143 | |
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144 | std::string utility_name = "utility"; |
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145 | obsList[columnObsIndex] = (char*) utility_name.c_str(); |
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146 | |
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147 | size_t columnIndex = 0; |
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148 | for (size_t i = 0; i < radioInfo->numParameters; i++){ |
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149 | nameList[columnIndex] = (char*)parameters[i].name.c_str(); |
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150 | columnIndex++; |
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151 | } |
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152 | |
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153 | size_t obsValueIndex = 0; |
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154 | for(size_t i = 0; i < radioInfo->numObservables; i++) { |
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155 | obsVals[obsValueIndex] = observables[i].value; |
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156 | obsValueIndex++; |
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157 | } |
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158 | |
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159 | /* Make sure we do not return any entries for the current channel */ |
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160 | std::string channel_name = "channel"; |
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161 | searchNames[0] = (char *) channel_name.c_str(); |
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162 | searchOps[0] = EQ; |
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163 | searchVals[0] = parameters[0].value; |
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164 | |
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165 | /* Execute CBR search and put output into returnValues */ |
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166 | cbr_search(myCBR, searchNames, searchOps, searchVals, |
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167 | 1, returnValues); |
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168 | |
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169 | /* Calculate Utility */ |
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170 | float oldUtilityValue = returnValues[UTILITY]; |
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171 | |
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172 | // Set DSA utility to take into account both the previously sensed |
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173 | // energy and the average communication time. |
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174 | |
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175 | float newUtilityValue = oldUtilityValue + observables[COMMUNICATION_TIME].value; |
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176 | |
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177 | // If communication time value is set, we know we need to change channels because of PU. |
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178 | // So we should lower the utility for this channel. |
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179 | |
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180 | if((observables[COMMUNICATION_TIME].value != 0) || (observables[ENERGY].value > 1000)) { |
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181 | newUtilityValue = newUtilityValue - 100; |
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182 | } else { |
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183 | newUtilityValue = newUtilityValue + 20; |
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184 | } |
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185 | |
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186 | |
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187 | if(newUtilityValue <= 100) |
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188 | newUtilityValue = 100; |
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189 | |
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190 | obsVals[obsValueIndex] = newUtilityValue; |
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191 | |
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192 | size_t returnValueIndex = 0; |
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193 | for(size_t i = 0; i < radioInfo->numParameters; i++) { |
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194 | valList[returnValueIndex] = parameters[i].value; |
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195 | returnValueIndex++; |
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196 | } |
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197 | |
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198 | cbr_update(myCBR, nameList, obsList, valList, obsVals, |
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199 | numberColumns, obsColumns); |
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200 | } |
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201 | |
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202 | |
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203 | void |
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204 | CognitiveEngine::WaitForSignal() |
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205 | { |
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206 | char buffer[256]; |
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207 | |
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208 | while(true) { |
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209 | memset(buffer, 0, 256); |
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210 | |
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211 | ReadMessage(commandSocketFD, buffer); |
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212 | |
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213 | // TODO this is ugly... is there a better way? Doesn't strcmp compare the |
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214 | // whole string? We only need to compare until we find a single different |
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215 | // byte... |
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216 | // |
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217 | // If we send integer op codes rather than strings, this process will be |
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218 | // MUCH faster since instead of donig string compares we can simply |
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219 | // switch on the integer value... |
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220 | if(strcmp(buffer, "update_performance") == 0) { |
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221 | |
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222 | /* Receive Set of current Parameters */ |
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223 | memset(buffer, 0, 256); |
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224 | ReadMessage(commandSocketFD, buffer); |
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225 | uint32_t numParameters = atoi(buffer); |
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226 | |
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227 | Parameter *p = new Parameter[numParameters]; |
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228 | |
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229 | for(size_t i = 0; i < numParameters; i++) { |
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230 | memset(buffer, 0, 256); |
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231 | ReadMessage(commandSocketFD, buffer); |
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232 | p[i].name = std::string(buffer); |
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233 | |
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234 | memset(buffer, 0, 256); |
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235 | ReadMessage(commandSocketFD, buffer); |
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236 | p[i].value = atof(buffer); |
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237 | } |
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238 | |
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239 | /* Receive Set of Observables */ |
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240 | memset(buffer, 0, 256); |
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241 | ReadMessage(commandSocketFD, buffer); |
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242 | uint32_t numObservables = atoi(buffer); |
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243 | |
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244 | Observable *o = new Observable[numObservables]; |
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245 | |
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246 | for(size_t i = 0; i < numObservables; i++) { |
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247 | memset(buffer, 0, 256); |
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248 | ReadMessage(commandSocketFD, buffer); |
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249 | o[i].name = std::string(buffer); |
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250 | |
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251 | memset(buffer, 0, 256); |
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252 | ReadMessage(commandSocketFD, buffer); |
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253 | o[i].value = atof(buffer); |
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254 | } |
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255 | |
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256 | ReceiveFeedback(o,p); |
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257 | |
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258 | delete [] o; |
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259 | delete [] p; |
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260 | } |
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261 | else if(strcmp(buffer, "request_optimization_service") == 0) { |
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262 | // THIS IS CURRENTLY IN DEMO MODE |
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263 | |
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264 | |
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265 | /* Receive Set of Observables */ |
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266 | LOG("\nCognitive Engine:: Receiving service name\n"); |
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267 | |
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268 | memset(buffer, 0, 256); |
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269 | ReadMessage(commandSocketFD,buffer); |
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270 | LOG("\nCognitive Engine:: Got service name, %s\n", buffer); |
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271 | |
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272 | /* Receive Set of Observables */ |
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273 | LOG("\nCognitive Engine:: Receiving Observable Parameters\n"); |
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274 | |
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275 | memset(buffer, 0, 256); |
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276 | ReadMessage(commandSocketFD,buffer); |
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277 | uint32_t numObservables = atoi(buffer); |
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278 | |
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279 | Observable *o = new Observable[numObservables]; |
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280 | |
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281 | for(size_t i = 0; i < numObservables; i++) { |
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282 | memset(buffer, 0, 256); |
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283 | ReadMessage(commandSocketFD, buffer); |
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284 | o[i].name = std::string(buffer); |
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285 | |
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286 | memset(buffer, 0, 256); |
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287 | ReadMessage(commandSocketFD, buffer); |
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288 | o[i].value = atof(buffer); |
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289 | } |
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290 | |
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291 | /* Receive Set of current Parameters */ |
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292 | LOG("Cognitive Engine:: Receiving Current Transmission Parameters\n"); |
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293 | |
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294 | memset(buffer, 0, 256); |
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295 | ReadMessage(commandSocketFD, buffer); |
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296 | uint32_t numCurrentParameters = atoi(buffer); |
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297 | |
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298 | Parameter *cp = new Parameter[numCurrentParameters]; |
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299 | |
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300 | for(size_t i = 0; i < numCurrentParameters; i++) { |
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301 | memset(buffer, 0, 256); |
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302 | ReadMessage(commandSocketFD, buffer); |
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303 | cp[i].name = std::string(buffer); |
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304 | |
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305 | memset(buffer, 0, 256); |
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306 | ReadMessage(commandSocketFD, buffer); |
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307 | cp[i].value = atof(buffer); |
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308 | } |
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309 | LOG("Cognitive Engine:: Processing parameters....\n"); |
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310 | |
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311 | // TODO need to actually do something with the observables here |
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312 | |
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313 | LOG("Cognitive Engine:: Sending Optimal Parameters to Application.\n"); |
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314 | char numParametersChar[10]; |
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315 | sprintf(numParametersChar, "%i", radioInfo->numParameters); |
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316 | SendMessage(commandSocketFD, numParametersChar); |
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317 | for(size_t i = 0; i < radioInfo->numParameters; i++) { |
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318 | SendMessage(commandSocketFD, "test"); |
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319 | SendMessage(commandSocketFD, "00"); |
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320 | } |
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321 | |
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322 | delete [] o; |
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323 | delete [] cp; |
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324 | } |
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325 | else if(strcmp(buffer, "request_optimization") == 0) { |
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326 | |
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327 | /* Receive Set of Observables */ |
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328 | LOG("\nCognitive Engine:: Receiving Observable Parameters\n"); |
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329 | |
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330 | memset(buffer, 0, 256); |
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331 | ReadMessage(commandSocketFD,buffer); |
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332 | uint32_t numObservables = atoi(buffer); |
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333 | |
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334 | Observable *o = new Observable[numObservables]; |
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335 | |
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336 | for(size_t i = 0; i < numObservables; i++) { |
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337 | memset(buffer, 0, 256); |
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338 | ReadMessage(commandSocketFD, buffer); |
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339 | o[i].name = std::string(buffer); |
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340 | |
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341 | memset(buffer, 0, 256); |
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342 | ReadMessage(commandSocketFD, buffer); |
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343 | o[i].value = atof(buffer); |
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344 | } |
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345 | |
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346 | /* Receive Set of current Parameters */ |
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347 | LOG("Cognitive Engine:: Receiving Current Transmission Parameters\n"); |
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348 | |
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349 | memset(buffer, 0, 256); |
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350 | ReadMessage(commandSocketFD, buffer); |
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351 | uint32_t numCurrentParameters = atoi(buffer); |
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352 | |
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353 | Parameter *cp = new Parameter[numCurrentParameters]; |
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354 | |
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355 | for(size_t i = 0; i < numCurrentParameters; i++) { |
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356 | memset(buffer, 0, 256); |
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357 | ReadMessage(commandSocketFD, buffer); |
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358 | cp[i].name = std::string(buffer); |
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359 | |
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360 | memset(buffer, 0, 256); |
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361 | ReadMessage(commandSocketFD, buffer); |
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362 | cp[i].value = atof(buffer); |
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363 | } |
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364 | LOG("Cognitive Engine:: Processing parameters....\n"); |
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365 | |
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366 | Parameter *solutionSet; |
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367 | |
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368 | solutionSet = GetSolution(o,cp); |
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369 | |
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370 | // TODO need to actually do something with the observables here |
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371 | |
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372 | LOG("Cognitive Engine:: Sending Optimal Parameters to Application.\n"); |
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373 | char numParametersChar[10]; |
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374 | char solutionValue[50]; |
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375 | sprintf(numParametersChar, "%i", radioInfo->numParameters); |
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376 | SendMessage(commandSocketFD, numParametersChar); |
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377 | for(size_t i = 0; i < radioInfo->numParameters; i++) { |
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378 | SendMessage(commandSocketFD, solutionSet[i].name.c_str()); |
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379 | memset(solutionValue, 0, 50); |
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380 | sprintf(solutionValue, "%f", solutionSet[i].value); |
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381 | SendMessage(commandSocketFD, solutionValue); |
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382 | } |
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383 | |
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384 | delete [] o; |
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385 | delete [] cp; |
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386 | } |
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387 | else if(strcmp(buffer, "query_component_type") == 0) { |
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388 | SendComponentType(); |
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389 | } |
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390 | else if(strcmp(buffer, "connect_sml") == 0) { |
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391 | /* This command implies that we are disconnecting from the shell and |
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392 | * connecting to a SML component. */ |
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393 | char serverName[256]; |
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394 | char serverPort[256]; |
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395 | // TODO is this going to end up being too slow? |
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396 | memset(serverName, 0, 256); |
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397 | memset(serverPort, 0, 256); |
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398 | |
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399 | ReadMessage(commandSocketFD, serverName); |
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400 | ReadMessage(commandSocketFD, serverPort); |
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401 | |
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402 | /* Only continue if we are currently connected to a shell. */ |
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403 | if(!SML_present) { |
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404 | DeregisterComponent(); |
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405 | |
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406 | shutdown(commandSocketFD, 2); |
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407 | close(commandSocketFD); |
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408 | |
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409 | ConnectToRemoteComponent(serverName, serverPort, true); |
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410 | } |
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411 | } |
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412 | else if(strcmp(buffer, "disconnect_sml") == 0) { |
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413 | /* This command implies that we are disconnecting from the SML and |
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414 | * connecting to a shell component. */ |
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415 | char serverName[256]; |
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416 | char serverPort[256]; |
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417 | // TODO is this going to end up being too slow? |
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418 | memset(serverName, 0, 256); |
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419 | memset(serverPort, 0, 256); |
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420 | |
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421 | ReadMessage(commandSocketFD, serverName); |
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422 | ReadMessage(commandSocketFD, serverPort); |
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423 | |
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424 | /* We only want to do this if we are actually connected to an SML |
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425 | * currently. */ |
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426 | if(SML_present) { |
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427 | DeregisterServices(); |
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428 | |
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429 | shutdown(commandSocketFD, 2); |
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430 | close(commandSocketFD); |
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431 | |
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432 | ConnectToRemoteComponent(serverName, serverPort, false); |
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433 | } |
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434 | } |
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435 | else if(strcmp(buffer, "reset_engine_cognitive") == 0) { |
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436 | Reset(); |
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437 | } |
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438 | else if(strcmp(buffer, "shutdown_engine_cognitive") == 0) { |
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439 | Shutdown(); |
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440 | } |
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441 | } |
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442 | } |
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443 | |
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444 | |
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445 | void |
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446 | CognitiveEngine::Shutdown() |
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447 | { |
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448 | if(SML_present) { |
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449 | //DeregisterServices(); |
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450 | DeregisterComponent(); |
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451 | } |
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452 | else { |
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453 | DeregisterComponent(); |
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454 | } |
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455 | // TODO should something else be happening here? |
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456 | } |
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457 | |
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458 | |
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459 | void |
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460 | CognitiveEngine::Reset() |
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461 | { |
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462 | LOG("Resetting Cognitive Engine.\n"); |
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463 | |
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464 | if(SML_present) { |
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465 | DeregisterServices(); |
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466 | DeregisterComponent(); |
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467 | } |
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468 | else { |
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469 | DeregisterComponent(); |
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470 | } |
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471 | } |
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472 | |
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473 | |
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474 | void |
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475 | CognitiveEngine::RegisterComponent() |
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476 | { |
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477 | char buffer[256]; |
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478 | SendMessage(commandSocketFD, "register_engine_cognitive"); |
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479 | LOG("Cognitive Engine:: Registration message sent to shell.\n"); |
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480 | |
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481 | memset(buffer, 0, 256); |
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482 | ReadMessage(commandSocketFD, buffer); |
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483 | } |
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484 | |
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485 | void |
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486 | CognitiveEngine::DeregisterComponent() |
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487 | { |
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488 | SendMessage(commandSocketFD, "deregister_engine_cognitive"); |
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489 | LOG("Cognitive Engine:: Deregistration message sent.\n"); |
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490 | |
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491 | shutdown(commandSocketFD, 2); |
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492 | close(commandSocketFD); |
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493 | commandSocketFD = -1; |
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494 | LOG("Cognitive Engine:: Shell socket closed.\n"); |
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495 | } |
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496 | |
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497 | |
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498 | void |
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499 | CognitiveEngine::RegisterServices() |
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500 | { |
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501 | LOG("Cognitive Engine:: Registering services.\n"); |
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502 | |
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503 | SendMessage(commandSocketFD, "register_service"); |
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504 | SendMessage(commandSocketFD, "test_srv"); |
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505 | |
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506 | SendMessage(commandSocketFD, "register_service"); |
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507 | SendMessage(commandSocketFD, "test_srv1"); |
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508 | |
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509 | SendMessage(commandSocketFD, "register_service"); |
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510 | SendMessage(commandSocketFD, "test_srv2"); |
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511 | |
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512 | SendMessage(commandSocketFD, "register_service"); |
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513 | SendMessage(commandSocketFD, "test_srv3"); |
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514 | |
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515 | } |
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516 | |
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517 | //Combined with deregister component since those two things must happen togeather |
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518 | void |
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519 | CognitiveEngine::DeregisterServices() |
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520 | { |
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521 | LOG("Cognitive Engine:: Deregistering services.\n"); |
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522 | |
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523 | SendMessage(commandSocketFD, "deregister_service"); |
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524 | SendMessage(commandSocketFD, "test_srv"); |
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525 | |
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526 | SendMessage(commandSocketFD, "deregister_service"); |
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527 | SendMessage(commandSocketFD, "test_srv1"); |
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528 | |
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529 | SendMessage(commandSocketFD, "deregister_service"); |
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530 | SendMessage(commandSocketFD, "test_srv2"); |
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531 | |
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532 | SendMessage(commandSocketFD, "deregister_service"); |
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533 | SendMessage(commandSocketFD, "test_srv3"); |
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534 | |
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535 | } |
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536 | |
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537 | void |
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538 | CognitiveEngine::ReceiveRadioConfiguration() |
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539 | { |
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540 | LOG("Cognitive Engine:: Receiving Radio Configuration.\n"); |
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541 | |
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542 | char buffer[256]; |
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543 | |
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544 | /* Receive Set of Utilities */ |
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545 | memset(buffer, 0, 256); |
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546 | ReadMessage(commandSocketFD, buffer); |
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547 | radioInfo->numUtilities = atoi(buffer); |
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548 | |
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549 | for(size_t i = 0; i < radioInfo->numUtilities; i++) { |
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550 | memset(buffer, 0, 256); |
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551 | ReadMessage(commandSocketFD, buffer); |
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552 | uList[i].name = std::string(buffer); |
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553 | |
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554 | memset(buffer, 0, 256); |
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555 | ReadMessage(commandSocketFD, buffer); |
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556 | uList[i].units = std::string(buffer); |
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557 | |
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558 | memset(buffer, 0, 256); |
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559 | ReadMessage(commandSocketFD, buffer); |
---|
560 | uList[i].goal = std::string(buffer); |
---|
561 | |
---|
562 | memset(buffer, 0, 256); |
---|
563 | ReadMessage(commandSocketFD, buffer); |
---|
564 | uList[i].target = atof(buffer); |
---|
565 | } |
---|
566 | |
---|
567 | /* Receive Set of Parameters */ |
---|
568 | memset(buffer, 0, 256); |
---|
569 | ReadMessage(commandSocketFD, buffer); |
---|
570 | radioInfo->numParameters = atoi(buffer); |
---|
571 | |
---|
572 | for(size_t i = 0; i < radioInfo->numParameters; i++) { |
---|
573 | memset(buffer, 0, 256); |
---|
574 | ReadMessage(commandSocketFD, buffer); |
---|
575 | pList[i].name = std::string(buffer); |
---|
576 | |
---|
577 | memset(buffer, 0, 256); |
---|
578 | ReadMessage(commandSocketFD, buffer); |
---|
579 | pList[i].units = std::string(buffer); |
---|
580 | |
---|
581 | memset(buffer, 0, 256); |
---|
582 | ReadMessage(commandSocketFD, buffer); |
---|
583 | pList[i].min = atof(buffer); |
---|
584 | |
---|
585 | memset(buffer, 0, 256); |
---|
586 | ReadMessage(commandSocketFD, buffer); |
---|
587 | pList[i].max = atof(buffer); |
---|
588 | |
---|
589 | memset(buffer, 0, 256); |
---|
590 | ReadMessage(commandSocketFD, buffer); |
---|
591 | pList[i].step = atof(buffer); |
---|
592 | |
---|
593 | memset(buffer, 0, 256); |
---|
594 | ReadMessage(commandSocketFD,buffer); |
---|
595 | pList[i].numAffects = atoi(buffer); |
---|
596 | |
---|
597 | for(size_t j = 0; j < pList[i].numAffects; j++) { |
---|
598 | memset(buffer, 0, 256); |
---|
599 | ReadMessage(commandSocketFD,buffer); |
---|
600 | // TODO for + if{break} = while? |
---|
601 | for(size_t k = 0; k < radioInfo->numUtilities; k++) { |
---|
602 | if(uList[k].name == std::string(buffer)) { |
---|
603 | pList[i].affection_list[j].u = &uList[k]; |
---|
604 | break; |
---|
605 | } |
---|
606 | } |
---|
607 | |
---|
608 | memset(buffer, 0, 256); |
---|
609 | ReadMessage(commandSocketFD, buffer); |
---|
610 | pList[i].affection_list[j].relation = std::string(buffer); |
---|
611 | } |
---|
612 | } |
---|
613 | |
---|
614 | /* Receive Set of Observables */ |
---|
615 | memset(buffer, 0, 256); |
---|
616 | ReadMessage(commandSocketFD, buffer); |
---|
617 | radioInfo->numObservables = atoi(buffer); |
---|
618 | |
---|
619 | for(size_t i = 0; i < radioInfo->numObservables; i++) { |
---|
620 | memset(buffer, 0, 256); |
---|
621 | ReadMessage(commandSocketFD, buffer); |
---|
622 | oList[i].name = std::string(buffer); |
---|
623 | |
---|
624 | memset(buffer, 0, 256); |
---|
625 | ReadMessage(commandSocketFD, buffer); |
---|
626 | oList[i].numAffects = atoi(buffer); |
---|
627 | |
---|
628 | for(size_t j = 0; j < oList[i].numAffects; j++) { |
---|
629 | memset(buffer, 0, 256); |
---|
630 | ReadMessage(commandSocketFD, buffer); |
---|
631 | // TODO for + if{break} = while? |
---|
632 | for(size_t k = 0; k < radioInfo->numUtilities; k++) { |
---|
633 | if(uList[k].name == std::string(buffer)){ |
---|
634 | oList[i].affection_list[j].u = &uList[k]; |
---|
635 | break; |
---|
636 | } |
---|
637 | } |
---|
638 | |
---|
639 | memset(buffer, 0, 256); |
---|
640 | ReadMessage(commandSocketFD, buffer); |
---|
641 | oList[i].affection_list[j].relation = std::string(buffer); |
---|
642 | } |
---|
643 | } |
---|
644 | |
---|
645 | SendMessage(commandSocketFD, "receive_config_ack"); |
---|
646 | |
---|
647 | BuildCognitiveEngine(); |
---|
648 | } |
---|
649 | |
---|
650 | void |
---|
651 | CognitiveEngine::ReceiveExperience() |
---|
652 | { |
---|
653 | LOG("Cognitive Engine:: Receiving Experience Report.\n"); |
---|
654 | char buffer[256]; |
---|
655 | uint32_t numberExp; |
---|
656 | |
---|
657 | /* Receive number of experience entries */ |
---|
658 | memset(buffer, 0, 256); |
---|
659 | ReadMessage(commandSocketFD, buffer); |
---|
660 | numberExp = atoi(buffer); |
---|
661 | |
---|
662 | LOG("Cognitive Engine:: Waiting for %i number of entries.\n", numberExp); |
---|
663 | |
---|
664 | SendMessage(commandSocketFD, "receive_exp_ack"); |
---|
665 | } |
---|
666 | |
---|
667 | |
---|
668 | /* The core of the CE is this function */ |
---|
669 | |
---|
670 | Parameter* |
---|
671 | CognitiveEngine::GetSolution(Observable *observables, Parameter *currentParameters) |
---|
672 | { |
---|
673 | LOG("Cognitive Engine:: Generating solution.\n"); |
---|
674 | |
---|
675 | /* Put together the CBR search array */ |
---|
676 | |
---|
677 | uint32_t channel = 0; |
---|
678 | char *searchNames[1]; |
---|
679 | char *sumSearchName; |
---|
680 | float searchVals[1]; |
---|
681 | float utilArray[(int)pList[0].max]; |
---|
682 | int searchOps[1]; |
---|
683 | uint32_t numberColumns = radioInfo->numUtilities + |
---|
684 | radioInfo->numParameters + |
---|
685 | radioInfo->numObservables + 1; |
---|
686 | |
---|
687 | float returnValues[numberColumns]; |
---|
688 | float sumRetVals[numberColumns]; |
---|
689 | |
---|
690 | // Total sum of utilities in sumRetVals[0] |
---|
691 | |
---|
692 | std::string channel_name = "channel"; |
---|
693 | std::string utility_name = "utility"; |
---|
694 | |
---|
695 | for( int i = 0 ; i < pList[0].max ; i++ ) { |
---|
696 | |
---|
697 | searchNames[0] = (char*) pList[0].name.c_str(); |
---|
698 | searchOps[0] = EQ; |
---|
699 | searchVals[0] = i+1; |
---|
700 | |
---|
701 | uint32_t rc = cbr_search(myCBR, searchNames, searchOps, searchVals, |
---|
702 | 1, returnValues); |
---|
703 | |
---|
704 | if(rc == 31337) { |
---|
705 | // No entry - must add |
---|
706 | |
---|
707 | char *rowNames[numberColumns]; |
---|
708 | size_t rowIndex = 0; |
---|
709 | for(size_t j = 0; j < radioInfo->numUtilities; j++) { |
---|
710 | rowNames[rowIndex] = (char*)uList[j].name.c_str(); |
---|
711 | rowIndex++; |
---|
712 | } |
---|
713 | for(size_t j = 0; j < radioInfo->numParameters; j++) { |
---|
714 | rowNames[rowIndex] = (char*)pList[j].name.c_str(); |
---|
715 | if(pList[j].name == "channel") |
---|
716 | returnValues[rowIndex] = i+1; |
---|
717 | rowIndex++; |
---|
718 | } |
---|
719 | for(size_t j = 0; j < radioInfo->numObservables; j++) { |
---|
720 | rowNames[rowIndex] = (char*)oList[j].name.c_str(); |
---|
721 | rowIndex++; |
---|
722 | } |
---|
723 | |
---|
724 | rowNames[rowIndex] = (char *) utility_name.c_str(); |
---|
725 | returnValues[rowIndex] = 500; |
---|
726 | |
---|
727 | /* Add the new optimized set to the CBR database */ |
---|
728 | |
---|
729 | cbr_add_row(myCBR, rowNames, returnValues, numberColumns); |
---|
730 | } |
---|
731 | |
---|
732 | utilArray[i] = returnValues[UTILITY]; |
---|
733 | } |
---|
734 | |
---|
735 | printf("1: %f\t2: %f\t3: %f\t4: %f\n",utilArray[0],utilArray[1],utilArray[2],utilArray[3]); |
---|
736 | // Get sum of all the channel utilities. |
---|
737 | sumSearchName = (char *) utility_name.c_str(); |
---|
738 | uint32_t rc = cbr_search_sum(myCBR, sumSearchName, sumRetVals); |
---|
739 | |
---|
740 | // Psuedo random channel selection based upon utility. |
---|
741 | int k = rand() % (int)sumRetVals[0]; |
---|
742 | int cdf_total(0); |
---|
743 | |
---|
744 | for ( int i = 0; i < pList[0].max; i++ ) { |
---|
745 | cdf_total += utilArray[i]; |
---|
746 | if(k < cdf_total) { |
---|
747 | channel = i + 1; |
---|
748 | break; |
---|
749 | } |
---|
750 | } |
---|
751 | |
---|
752 | searchNames[0] = (char*) pList[0].name.c_str(); |
---|
753 | searchOps[0] = EQ; |
---|
754 | searchVals[0] = channel; |
---|
755 | |
---|
756 | rc = cbr_search(myCBR, searchNames, searchOps, searchVals, |
---|
757 | 1, returnValues); |
---|
758 | |
---|
759 | |
---|
760 | //returnValues[CHANNEL] = rand() % (int)pList[0].max + (int)pList[0].min; |
---|
761 | returnValues[CHANNEL] = channel; |
---|
762 | |
---|
763 | /* Package up the new set of parameters in order to add |
---|
764 | the new entry into the CBR database. */ |
---|
765 | |
---|
766 | size_t returnValueIndex = 0; |
---|
767 | for(size_t i = 0; i < radioInfo->numUtilities; i++) { |
---|
768 | uList[i].value = returnValues[returnValueIndex]; |
---|
769 | returnValueIndex++; |
---|
770 | } |
---|
771 | for(size_t i = 0; i < radioInfo->numParameters; i++) { |
---|
772 | pList[i].value = returnValues[returnValueIndex]; |
---|
773 | returnValueIndex++; |
---|
774 | } |
---|
775 | for(size_t i = 0; i < radioInfo->numObservables; i++) { |
---|
776 | oList[i].value = returnValues[returnValueIndex]; |
---|
777 | returnValueIndex++; |
---|
778 | } |
---|
779 | //returnValues[returnValueIndex] = 0; |
---|
780 | |
---|
781 | char *allNames[numberColumns]; |
---|
782 | size_t allNameIndex = 0; |
---|
783 | for(size_t i = 0; i < radioInfo->numUtilities; i++) { |
---|
784 | allNames[allNameIndex] = (char*)uList[i].name.c_str(); |
---|
785 | returnValues[allNameIndex] = uList[i].target; |
---|
786 | allNameIndex++; |
---|
787 | } |
---|
788 | for(size_t i = 0; i < radioInfo->numParameters; i++) { |
---|
789 | allNames[allNameIndex] = (char*)pList[i].name.c_str(); |
---|
790 | allNameIndex++; |
---|
791 | } |
---|
792 | for(size_t i = 0; i < radioInfo->numObservables; i++) { |
---|
793 | allNames[allNameIndex] = (char*)oList[i].name.c_str(); |
---|
794 | // returnValues[allNameIndex] = 0; |
---|
795 | allNameIndex++; |
---|
796 | } |
---|
797 | |
---|
798 | allNames[allNameIndex] = (char *) utility_name.c_str(); |
---|
799 | |
---|
800 | /* Add the new optimized set to the CBR database */ |
---|
801 | cbr_add_row(myCBR, allNames, returnValues, returnValueIndex+1); |
---|
802 | |
---|
803 | |
---|
804 | /* Return the set of new parameter values. */ |
---|
805 | return pList; |
---|
806 | } |
---|
807 | |
---|
808 | |
---|
809 | Parameter* |
---|
810 | CognitiveEngine::GetSolution(Observable *observables, \ |
---|
811 | Parameter *currentParameters, std::string service) |
---|
812 | { |
---|
813 | LOG("Cognitive Engine:: Generating solution for %s service.\n", service.c_str()); |
---|
814 | |
---|
815 | return pList; |
---|
816 | } |
---|
817 | |
---|
818 | |
---|
819 | void |
---|
820 | CognitiveEngine::ReceiveFeedback(Observable *observables, Parameter *parameters, \ |
---|
821 | std::string service) |
---|
822 | { |
---|
823 | LOG("Cognitive Engine:: Receiving feedback.\n"); |
---|
824 | } |
---|
825 | |
---|
826 | |
---|
827 | void |
---|
828 | CognitiveEngine::BuildCognitiveEngine() |
---|
829 | { |
---|
830 | char filename[] = {"ex1"}; |
---|
831 | char tablename[] = {"data"}; |
---|
832 | |
---|
833 | uint32_t numberColumns = |
---|
834 | radioInfo->numUtilities + |
---|
835 | radioInfo->numParameters + |
---|
836 | radioInfo->numObservables + 1; |
---|
837 | |
---|
838 | char *cols[numberColumns]; |
---|
839 | |
---|
840 | size_t columnIndex = 0; |
---|
841 | for (size_t i = 0; i < radioInfo->numUtilities; i++){ |
---|
842 | cols[columnIndex] = (char*)uList[i].name.c_str(); |
---|
843 | columnIndex++; |
---|
844 | } |
---|
845 | |
---|
846 | char *paramCols[radioInfo->numParameters]; |
---|
847 | size_t paramColumnIndex = 0; |
---|
848 | // Also need to make parameters the unique key |
---|
849 | for (size_t i = 0; i < radioInfo->numParameters; i++){ |
---|
850 | cols[columnIndex] = (char*)pList[i].name.c_str(); |
---|
851 | paramCols[paramColumnIndex] = (char*)pList[i].name.c_str(); |
---|
852 | columnIndex++; |
---|
853 | paramColumnIndex++; |
---|
854 | } |
---|
855 | |
---|
856 | for (size_t i = 0; i < radioInfo->numObservables; i++){ |
---|
857 | cols[columnIndex] = (char*)oList[i].name.c_str(); |
---|
858 | columnIndex++; |
---|
859 | } |
---|
860 | |
---|
861 | std::string utility_name = "utility"; |
---|
862 | cols[columnIndex] = (char *)utility_name.c_str(); |
---|
863 | |
---|
864 | myCBR = cbr_create_with_primary(filename, tablename, cols, paramCols, numberColumns, radioInfo->numParameters); |
---|
865 | } |
---|
866 | |
---|