1 | #include <iostream> |
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2 | #include <sys/types.h> |
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3 | #include <sys/wait.h> |
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4 | #include "tinyxml.h" |
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5 | #include "tinystr.h" |
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6 | #include "socket/ServerSocket.h" |
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7 | #include "socket/SocketException.h" |
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8 | |
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9 | using namespace std; |
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10 | |
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11 | #define SERVER_PORT 30000 |
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12 | |
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13 | struct CE_Info { |
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14 | int numUtilities; |
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15 | int numParameters; |
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16 | int numObservables; |
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17 | }; |
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18 | |
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19 | struct Utility { |
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20 | string name; |
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21 | string units; |
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22 | string goal; |
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23 | float target; |
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24 | }; |
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25 | struct Affect { |
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26 | Utility * u; |
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27 | string relation; |
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28 | }; |
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29 | struct Parameter { |
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30 | string name; |
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31 | string units; |
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32 | float min; |
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33 | int numAffects; |
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34 | Affect affection_list[10]; |
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35 | float max; |
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36 | float step; |
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37 | }; |
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38 | |
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39 | struct Observable { |
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40 | string name; |
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41 | Affect affection_list[10]; |
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42 | int numAffects; |
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43 | }; |
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44 | |
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45 | void print_current_config(Utility * uList[], Parameter * pList[], Observable * oList[], CE_Info * ce_info) { |
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46 | int i = 0; |
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47 | int j = 0; |
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48 | |
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49 | for(i = 0; i < ce_info->numUtilities ; i++) { |
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50 | cout << "Utility: " << uList[i]->name << endl; |
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51 | cout << " Units: " << uList[i]->units << endl; |
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52 | cout << " Goal: " << uList[i]->goal << endl; |
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53 | cout << " Target: " << uList[i]->target << endl; |
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54 | } |
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55 | |
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56 | |
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57 | for(i = 0; i < ce_info->numParameters; i++) { |
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58 | cout << "Parameter: " << pList[i]->name << endl; |
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59 | cout << " Units: " << pList[i]->units << endl; |
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60 | cout << " Min: " << pList[i]->min << endl; |
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61 | cout << " Max: " << pList[i]->max << endl; |
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62 | cout << " Step: " << pList[i]->step << endl; |
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63 | for(j = 0; j < pList[i]->numAffects; j++) { |
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64 | cout << " Affect: " << pList[i]->affection_list[j].u->name << " -> " << pList[i]->affection_list[j].relation << endl; |
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65 | } |
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66 | } |
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67 | for(i = 0; i < ce_info->numObservables; i++) { |
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68 | cout << "Observable: " << oList[i]->name << endl; |
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69 | for(j = 0; j < oList[i]->numAffects; j++) { |
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70 | cout << " Affect: " << oList[i]->affection_list[j].u->name << " -> " << oList[i]->affection_list[j].relation << endl; |
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71 | } |
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72 | } |
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73 | } |
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74 | |
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75 | |
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76 | int parse_ce_config( TiXmlDocument * doc , Utility * u[], Parameter * p[], Observable * o[], CE_Info * ce_info) { |
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77 | |
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78 | TiXmlElement* pElem; //!current element |
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79 | TiXmlElement* pChild; //!current child of pElem |
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80 | TiXmlElement* pChild1; //!current child of pElem |
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81 | TiXmlElement* pSecondChild; //!current child of pElem |
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82 | TiXmlHandle hDoc(doc); //!handle to xml document |
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83 | TiXmlHandle hRoot(0); //! handle to root element |
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84 | |
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85 | int count = 0; |
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86 | int i = 0; |
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87 | int j = 0; |
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88 | int k = 0; |
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89 | |
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90 | pElem = hDoc.FirstChildElement().Element(); |
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91 | if(!pElem) { cout << "no valid root! quit-ing function!" << endl; return 0; } |
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92 | hRoot = TiXmlHandle(pElem); |
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93 | |
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94 | // Pull utility information from XML file. |
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95 | |
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96 | pElem = hRoot.FirstChild("utilities").Element(); |
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97 | pChild1 = hRoot.Child("utilities",count).Element(); |
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98 | |
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99 | |
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100 | for(pChild = pChild1->FirstChildElement("utility"); pChild; pChild = pChild->NextSiblingElement()) |
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101 | { |
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102 | u[i] = new Utility; |
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103 | const char *uName = pChild->Attribute("name"); |
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104 | if(uName) u[i]->name = uName; |
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105 | const char *uUnits = pChild->Attribute("units"); |
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106 | if(uUnits) u[i]->units = uUnits; |
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107 | const char *uGoal = pChild->Attribute("goal"); |
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108 | if(uGoal) u[i]->goal = uGoal; |
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109 | if(pChild->QueryFloatAttribute("target",&u[i]->target) != TIXML_SUCCESS) u[i]->target = -1; |
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110 | i++; |
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111 | } |
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112 | ce_info->numUtilities = i; |
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113 | cout << "Parsed " << ce_info->numUtilities << " utilities." << endl; |
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114 | |
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115 | // Pull observable information from XML file. |
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116 | i = 0; |
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117 | pElem = hRoot.FirstChild("observables").Element(); |
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118 | pChild1 = hRoot.Child("observables",count).Element(); |
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119 | |
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120 | for(pChild = pChild1->FirstChildElement("observable"); pChild; pChild = pChild->NextSiblingElement()) |
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121 | { |
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122 | |
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123 | const char *oName = pChild->Attribute("name"); |
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124 | o[i] = new Observable; |
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125 | |
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126 | if(oName) o[i]->name = oName; |
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127 | |
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128 | j = 0; |
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129 | for(pSecondChild = pChild->FirstChildElement("affect"); pSecondChild; pSecondChild = pSecondChild->NextSiblingElement()) |
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130 | { |
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131 | const char *oUtilName = pSecondChild->Attribute("utility"); |
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132 | |
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133 | // If a utility affects this parameter find the utility object and assign it |
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134 | if(oUtilName) { |
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135 | // Search for correct utility |
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136 | for(k=0;k<10;k++){ |
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137 | if(u[k]->name == oUtilName) { |
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138 | o[i]->affection_list[j].u = u[k]; |
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139 | break; |
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140 | } |
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141 | } |
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142 | } |
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143 | |
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144 | // Set relationship |
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145 | const char *oRelate = pSecondChild->Attribute("relationship"); |
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146 | if(oRelate) o[i]->affection_list[j].relation = oRelate; |
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147 | j++; |
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148 | } |
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149 | o[i]->numAffects = j; |
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150 | i++; |
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151 | } |
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152 | ce_info->numObservables = i; |
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153 | cout << "Parsed " << ce_info->numObservables << " observables." << endl; |
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154 | |
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155 | |
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156 | // Pull parameter information from XML file. |
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157 | pElem = hRoot.FirstChild("parameters").Element(); |
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158 | pChild1 = hRoot.Child("parameters",count).Element(); |
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159 | |
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160 | i = 0; |
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161 | for(pChild = pChild1->FirstChildElement("parameter"); pChild; pChild = pChild->NextSiblingElement()) |
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162 | { |
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163 | p[i] = new Parameter; |
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164 | |
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165 | const char *pName = pChild->Attribute("name"); |
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166 | if(pName) p[i]->name = pName; |
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167 | const char *pUnits = pChild->Attribute("units"); |
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168 | if(pUnits) p[i]->units = pUnits; |
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169 | |
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170 | if(pChild->QueryFloatAttribute("min",&p[i]->min) != TIXML_SUCCESS) p[i]->min = -1; |
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171 | if(pChild->QueryFloatAttribute("max",&p[i]->max) != TIXML_SUCCESS) p[i]->max = -1; |
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172 | if(pChild->QueryFloatAttribute("step",&p[i]->step) != TIXML_SUCCESS) p[i]->step = -1; |
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173 | |
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174 | j = 0; |
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175 | for(pSecondChild = pChild->FirstChildElement("affect"); pSecondChild; pSecondChild = pSecondChild->NextSiblingElement()) |
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176 | { |
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177 | const char *pUtilName = pSecondChild->Attribute("utility"); |
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178 | |
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179 | // If a utility affects this parameter find the utility object and assign it |
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180 | if(pUtilName) { |
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181 | // Search for correct utility |
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182 | for( k=0 ; u[k]!=NULL ; k++ ){ |
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183 | if(u[k]->name == pUtilName) { |
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184 | p[i]->affection_list[j].u = u[k]; |
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185 | break; |
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186 | } |
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187 | } |
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188 | } |
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189 | |
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190 | // Set relationship |
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191 | const char *pRelate = pSecondChild->Attribute("relationship"); |
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192 | if(pRelate) { |
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193 | p[i]->affection_list[j].relation = pRelate; |
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194 | } else { |
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195 | cout << "Error: No relation found." << endl; |
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196 | } |
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197 | j++; |
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198 | |
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199 | } |
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200 | p[i]->numAffects = j; |
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201 | i++; |
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202 | |
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203 | } |
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204 | ce_info->numParameters = i; |
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205 | cout << "Parsed " << ce_info->numParameters << " parameters." << endl; |
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206 | return 1; |
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207 | } |
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208 | |
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209 | |
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210 | void error(char *msg) |
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211 | { |
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212 | perror(msg); |
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213 | exit(1); |
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214 | } |
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215 | |
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216 | int ReceiveMessage(int socketfd, string message) { |
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217 | |
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218 | char buffer[256]; |
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219 | int n; |
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220 | |
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221 | // Clear incoming data buffer |
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222 | bzero(buffer,256); |
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223 | |
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224 | // Wait for incoming message |
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225 | n = read(socketfd,buffer,256); |
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226 | |
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227 | // Print message |
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228 | if (n > 0) |
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229 | printf("Here is the received meessage: %s\n",buffer); |
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230 | if(n == 0) |
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231 | printf("Client closed the socket.\n"); |
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232 | |
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233 | return n; |
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234 | } |
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235 | |
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236 | int SendMessage(int socketfd, string message) { |
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237 | int n; |
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238 | |
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239 | message.append("\0000"); |
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240 | // Write message back to client |
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241 | n = write(socketfd,message.c_str(),(message.size()+1)); |
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242 | if (n<0) |
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243 | error("Error sending to client\n"); |
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244 | if(n == 0) |
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245 | printf("Client closed the socket.\n"); |
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246 | |
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247 | return n; |
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248 | } |
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249 | |
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250 | void GetEnvironment() { |
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251 | |
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252 | } |
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253 | |
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254 | void Policy_ValidateSettings() { |
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255 | |
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256 | } |
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257 | |
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258 | // Update operating settings |
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259 | // This function will interact with the hardware "drivers" |
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260 | void UpdateRadioSettings() { |
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261 | |
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262 | } |
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263 | |
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264 | void LoadCEConfiguration(int socketfd,Utility * uList[], Parameter * pList[], Observable * oList[], CE_Info * ce_info){ |
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265 | int n,i,j; |
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266 | char counter[55]; |
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267 | char var[50]; |
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268 | int total_bytes; |
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269 | |
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270 | printf("Sending configuration to CE.\n"); |
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271 | |
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272 | // Send number of utilities |
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273 | sprintf(counter,"%d",ce_info->numUtilities); |
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274 | SendMessage(socketfd,counter); |
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275 | |
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276 | // utilities |
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277 | for(i = 0; i < ce_info->numUtilities; i++) { |
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278 | SendMessage(socketfd,uList[i]->name); |
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279 | SendMessage(socketfd,uList[i]->units); |
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280 | SendMessage(socketfd,uList[i]->goal); |
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281 | sprintf(var,"%f",uList[i]->target); |
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282 | SendMessage(socketfd,var); |
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283 | } |
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284 | |
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285 | // parameters |
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286 | sprintf(counter,"%i",ce_info->numParameters); |
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287 | SendMessage(socketfd,counter); |
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288 | for(i = 0; i < ce_info->numParameters; i++) { |
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289 | SendMessage(socketfd,pList[i]->name); |
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290 | SendMessage(socketfd,pList[i]->units); |
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291 | sprintf(var,"%f",pList[i]->min); |
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292 | SendMessage(socketfd,var); |
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293 | sprintf(var,"%f",pList[i]->max); |
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294 | SendMessage(socketfd,var); |
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295 | sprintf(var,"%f",pList[i]->step); |
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296 | SendMessage(socketfd,var); |
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297 | |
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298 | sprintf(counter,"%i",pList[i]->numAffects); |
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299 | SendMessage(socketfd,counter); |
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300 | for(j = 0; j < pList[i]->numAffects; j++) { |
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301 | SendMessage(socketfd,pList[i]->affection_list[j].u->name); |
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302 | SendMessage(socketfd,pList[i]->affection_list[j].relation); |
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303 | } |
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304 | } |
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305 | |
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306 | // observables |
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307 | sprintf(counter,"%i",ce_info->numObservables); |
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308 | SendMessage(socketfd,counter); |
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309 | for(i = 0; i < ce_info->numObservables; i++) { |
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310 | SendMessage(socketfd,oList[i]->name); |
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311 | |
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312 | sprintf(counter,"%i",oList[i]->numAffects); |
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313 | SendMessage(socketfd,counter); |
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314 | for(j = 0; j < oList[i]->numAffects; j++) { |
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315 | SendMessage(socketfd,oList[i]->affection_list[j].u->name); |
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316 | SendMessage(socketfd,oList[i]->affection_list[j].relation); |
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317 | } |
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318 | } |
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319 | |
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320 | printf("Configuration sent, waiting for ACK...\n"); |
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321 | // Receive ACK for utils |
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322 | string message; |
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323 | n = ReceiveMessage(socketfd, message); |
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324 | cout << message << endl; |
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325 | printf("ACK received.\n"); |
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326 | |
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327 | } |
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328 | |
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329 | void UpdateCEConfiguration() { |
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330 | |
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331 | } |
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332 | |
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333 | void ResetCEConfiguration(){ |
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334 | |
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335 | } |
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336 | |
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337 | void LoadCEExperience(){ |
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338 | |
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339 | } |
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340 | |
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341 | void UpdateCEExperience() { |
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342 | |
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343 | } |
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344 | |
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345 | void ResetCEExperience() { |
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346 | |
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347 | } |
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348 | |
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349 | void RequestCEOptimization() { |
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350 | |
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351 | } |
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352 | |
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353 | void RunSimulator(int socketfd,Utility * uList[], Parameter * pList[], Observable * oList[], CE_Info * ce_info) { |
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354 | |
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355 | // Set fake past environment |
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356 | LoadCEExperience(); |
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357 | |
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358 | // Set fake current environment |
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359 | RequestCEOptimization(); |
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360 | |
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361 | // Act like we are updating the hardware tranmission settings |
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362 | UpdateRadioSettings(); |
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363 | |
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364 | // Send back fake utility values |
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365 | UpdateCEExperience(); |
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366 | } |
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367 | |
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368 | void StartMessaging(int socketfd,Utility * uList[], Parameter * pList[], Observable * oList[], CE_Info * ce_info) { |
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369 | |
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370 | LoadCEConfiguration(socketfd,uList, pList, oList, ce_info); |
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371 | |
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372 | RunSimulator(socketfd,uList, pList, oList, ce_info); |
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373 | } |
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374 | |
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375 | int StartShell(int port,Utility * uList[], Parameter * pList[], Observable * oList[], CE_Info * ce_info) { |
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376 | // Start socket server |
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377 | int sockfd, newsockfd, clilen; |
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378 | struct sockaddr_in serv_addr, cli_addr; |
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379 | |
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380 | // Setup socket connection |
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381 | |
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382 | sockfd = socket(AF_INET, SOCK_STREAM, 0); |
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383 | if (sockfd < 0) |
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384 | error("ERROR opening socket"); |
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385 | bzero((char *) &serv_addr, sizeof(serv_addr)); |
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386 | serv_addr.sin_family = AF_INET; |
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387 | serv_addr.sin_addr.s_addr = INADDR_ANY; |
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388 | serv_addr.sin_port = htons(port); |
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389 | if (bind(sockfd, (struct sockaddr *) &serv_addr, |
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390 | sizeof(serv_addr)) < 0) |
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391 | error("ERROR on binding"); |
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392 | listen(sockfd,5); |
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393 | clilen = sizeof(cli_addr); |
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394 | |
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395 | //while(1) { |
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396 | newsockfd = accept(sockfd, |
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397 | (struct sockaddr *) &cli_addr, |
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398 | (socklen_t*)&clilen); |
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399 | if (newsockfd < 0) |
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400 | error("ERROR on accept"); |
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401 | |
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402 | // Begin parsing the messages |
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403 | StartMessaging(newsockfd,uList, pList, oList, ce_info); |
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404 | //} |
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405 | return 0; |
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406 | } |
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407 | |
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408 | int main(int argc, char* argv[]) { |
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409 | |
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410 | |
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411 | // CognitiveEngine CE; |
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412 | // CognitiveEngineShell Shell; |
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413 | string pFilename; |
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414 | int pid; |
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415 | |
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416 | Utility * uList[10]; |
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417 | Parameter * pList[10]; |
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418 | Observable * oList[10]; |
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419 | CE_Info ce_info; |
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420 | |
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421 | if(argc < 2) { |
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422 | cout << "Warning no XML file specific using default: example.xml" << endl; |
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423 | pFilename = "example.xml"; |
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424 | } else { |
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425 | pFilename = argv[1]; |
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426 | } |
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427 | |
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428 | TiXmlDocument doc( pFilename.c_str() ); |
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429 | bool loadOkay = doc.LoadFile(); |
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430 | if (!loadOkay) |
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431 | { |
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432 | cout << "Loading " << pFilename << " failed." << endl; |
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433 | return 0; |
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434 | } |
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435 | |
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436 | cout << "Attemping to parse " << pFilename << "." << endl; |
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437 | parse_ce_config( &doc , uList, pList, oList, &ce_info); |
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438 | cout << "Configuration file parsing completed." << endl; |
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439 | |
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440 | //print_current_config(uList, pList, oList, &ce_info); |
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441 | |
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442 | pid = fork(); |
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443 | if(pid == 0) { |
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444 | // In child process - open policy engine port. |
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445 | // StartShell(30000,uList, pList, oList, &ce_info); |
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446 | } else { |
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447 | // In parent process - open cognitive engine port. |
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448 | StartShell(30002,uList, pList, oList, &ce_info); |
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449 | } |
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450 | |
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451 | |
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452 | return 1; |
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453 | } |
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