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 | /*! Inter-component communication handled by sockets and FD's. |
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18 | * Server support has been completely implemented and tested. |
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19 | * |
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20 | * Services are stored in a SQLite DB by the ID of the CE that registered them. Service |
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21 | * support has been completely implemented and tested. |
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22 | * |
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23 | * Missions are loaded from an XML file, connected with services provided by components, |
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24 | * and run. See the documentation for the "PerformActiveMission" below for important |
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25 | * info. |
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26 | */ |
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27 | |
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28 | |
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29 | #include <cmath> |
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30 | #include <cstdio> |
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31 | #include <cstdlib> |
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32 | #include <cstring> |
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33 | #include <stdint.h> |
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34 | |
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35 | #include <arpa/inet.h> |
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36 | #include <iostream> |
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37 | #include <netinet/in.h> |
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38 | #include <netdb.h> |
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39 | #include <fcntl.h> |
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40 | #include <sqlite3.h> |
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41 | #include <string> |
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42 | #include <sys/ioctl.h> |
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43 | #include <sys/mman.h> |
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44 | #include <sys/socket.h> |
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45 | #include <sys/types.h> |
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46 | #include <sys/wait.h> |
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47 | |
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48 | #include "tinyxml/tinyxml.h" |
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49 | #include "tinyxml/tinystr.h" |
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50 | |
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51 | #include "vtcross/debug.h" |
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52 | #include "vtcross/error.h" |
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53 | #include "vtcross/common.h" |
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54 | #include "vtcross/containers.h" |
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55 | #include "vtcross/service_management_layer.h" |
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56 | #include "vtcross/socketcomm.h" |
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57 | |
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58 | |
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59 | using namespace std; |
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60 | |
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61 | |
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62 | /* Internal structs used to keep track of sqlite database information. */ |
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63 | struct services_s { |
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64 | string filename; |
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65 | string tablename; |
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66 | string command; |
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67 | sqlite3 *db; |
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68 | unsigned int num_columns; |
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69 | }; |
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70 | |
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71 | struct data_s { |
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72 | string filename; |
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73 | string tablename; |
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74 | string command; |
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75 | sqlite3 *db; |
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76 | unsigned int num_columns; |
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77 | }; |
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78 | |
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79 | typedef struct services_s *services_DB_t; |
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80 | typedef struct data_s *data_DB_t; |
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81 | |
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82 | /* Global tracking of the services and parameters that this instance of SML is |
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83 | * aware of. */ |
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84 | services_DB_t services_DB; |
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85 | data_DB_t data_DB; |
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86 | |
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87 | /* The filename of the SML configuration, used if the SML is told to reload it's |
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88 | * configuration. */ |
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89 | string _SML_Config; |
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90 | |
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91 | /* Keeps track of whether or not the 'shell' component is used by the active |
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92 | * mission. */ |
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93 | bool shellUsed; |
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94 | |
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95 | |
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96 | /* Callback function used internally by some of the SQLite3 commands for debug |
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97 | * output. Code provided by sqlite documentation. */ |
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98 | int32_t |
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99 | callback(void *notUsed, int32_t argc, char **argv, char **azColName) |
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100 | { |
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101 | for(size_t i = 0; i < argc; i++) { |
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102 | LOG("%s = %s\n", azColName[i], argv[i] ? argv[i] : "NULL"); |
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103 | } |
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104 | |
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105 | LOG("\n"); |
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106 | return 0; |
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107 | } |
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108 | |
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109 | |
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110 | ServiceManagementLayer::ServiceManagementLayer() |
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111 | { |
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112 | LOG("Creating Service Management Layer.\n"); |
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113 | |
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114 | shellSocketFD = -1; |
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115 | numberOfCognitiveEngines = 0; |
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116 | CE_Present = false; |
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117 | cogEngSrv = 1; |
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118 | } |
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119 | |
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120 | |
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121 | /* Free and clear the DB's associated with this SML in the destructor. |
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122 | * |
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123 | * Note that exiting with an error condition will cause SML to not be destructed, |
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124 | * resulting in the DB's staying in memory until the destructor is encountered in |
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125 | * future executions. */ |
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126 | ServiceManagementLayer::~ServiceManagementLayer() |
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127 | { |
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128 | char *errorMsg; |
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129 | int32_t rc; /* sqlite command return code */ |
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130 | |
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131 | services_DB->command = "drop table "; |
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132 | services_DB->command.append(services_DB->tablename); |
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133 | rc = sqlite3_exec(services_DB->db, services_DB->command.c_str(), callback, 0, &errorMsg); |
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134 | if((rc != SQLITE_OK) && (rc != 101)) |
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135 | WARNING("ServiceManagementLayer::Destructor services 'drop table' error: %s\n", errorMsg); |
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136 | |
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137 | services_DB->command = "vacuum"; |
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138 | rc = sqlite3_exec(services_DB->db, services_DB->command.c_str(), callback, 0, &errorMsg); |
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139 | if((rc != SQLITE_OK) && (rc != 101)) |
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140 | WARNING("ServiceManagementLayer::Destructor services 'vacuum' error: %s\n", errorMsg); |
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141 | |
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142 | free(services_DB); |
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143 | |
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144 | data_DB->command = "drop table "; |
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145 | data_DB->command.append(data_DB->tablename); |
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146 | rc = sqlite3_exec(data_DB->db, data_DB->command.c_str(), callback, 0, &errorMsg); |
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147 | if((rc != SQLITE_OK) && (rc != 101)) |
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148 | WARNING("ServiceManagementLayer::Destructor data 'drop table' error: %s\n", errorMsg); |
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149 | |
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150 | data_DB->command = "vacuum"; |
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151 | rc = sqlite3_exec(data_DB->db, data_DB->command.c_str(), callback, 0, &errorMsg); |
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152 | if((rc != SQLITE_OK) && (rc != 101)) |
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153 | WARNING("ServiceManagementLayer::Destructor data 'vacuum' error: %s\n", errorMsg); |
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154 | |
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155 | free(data_DB); |
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156 | } |
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157 | |
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158 | |
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159 | /* Note that sizes of CE_List, miss, and service are hardcoded for now. |
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160 | * Also, their sizes are hardcoded into the code in various places; a fix |
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161 | * for a future version. */ |
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162 | ServiceManagementLayer::ServiceManagementLayer(const char* SML_Config, \ |
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163 | const char* serverName, const char* serverPort, int16_t clientPort) |
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164 | { |
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165 | LOG("Creating Service Management Layer.\n"); |
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166 | |
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167 | _SML_Config = string(SML_Config); |
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168 | SMLport = clientPort; |
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169 | |
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170 | ConnectToShell(serverName, serverPort); |
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171 | CE_List = new CE_Reg[10]; |
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172 | |
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173 | miss = new Mission[10]; |
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174 | for(size_t i = 0; i < 10; i++) { |
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175 | miss[i].services = new Service[30]; |
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176 | } |
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177 | |
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178 | Current_ID = 0; |
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179 | |
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180 | LoadConfiguration(SML_Config, miss); |
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181 | |
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182 | CreateServicesDB(); |
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183 | CreateDataDB(); |
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184 | } |
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185 | |
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186 | |
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187 | /* CALLED BY: constructor |
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188 | * INPUTS: <none> |
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189 | * OUTPUTS: <none> |
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190 | * |
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191 | * DESCRIPTION: Create and initialize a DB to hold the services registered by components |
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192 | */ |
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193 | void |
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194 | ServiceManagementLayer::CreateServicesDB() |
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195 | { |
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196 | sqlite3_stmt *ppStmt; /* OUT: Statement handle */ |
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197 | const char *pzTail; /* OUT: Pointer to unused portion of zSql */ |
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198 | int32_t rc; /* sqlite command return code */ |
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199 | |
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200 | services_DB = new services_s; |
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201 | services_DB->filename="Services_Table"; |
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202 | sqlite3_open(services_DB->filename.c_str(), &(services_DB->db)); |
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203 | |
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204 | services_DB->tablename="Services"; |
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205 | |
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206 | /* If program execution ends in anything other than a ordered shutdown, DB's will still |
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207 | * be there for next run. Need to get rid of it so that old data isn't inadvertantly |
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208 | * used in the next execution cycle. */ |
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209 | services_DB->command = "DROP TABLE if EXISTS Services;"; |
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210 | |
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211 | rc = sqlite3_prepare_v2(services_DB->db, services_DB->command.c_str(), 128, &ppStmt, &pzTail); |
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212 | if((rc != SQLITE_OK) && (rc != 101)) |
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213 | WARNING("ServiceManagementLayer::CreateServicesDB 'prepare_stmt' error %d\n", rc); |
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214 | |
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215 | rc = sqlite3_step(ppStmt); |
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216 | if((rc != SQLITE_OK) && (rc != 101)) |
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217 | WARNING("ServiceManagementLayer::CreateServicesDB 'step' error\n"); |
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218 | |
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219 | services_DB->num_columns = 2; |
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220 | |
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221 | /* Generate command */ |
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222 | services_DB->command="CREATE TABLE "; |
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223 | services_DB->command.append(services_DB->tablename); |
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224 | services_DB->command.append("(ID_Num INT, Service_Name TEXT);"); |
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225 | |
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226 | /* Execute create table command */ |
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227 | rc = sqlite3_prepare_v2(services_DB->db, services_DB->command.c_str(), 128, &ppStmt, &pzTail); |
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228 | if((rc != SQLITE_OK) && (rc != 101)) |
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229 | WARNING("ServiceManagementLayer::CreateServicesDB 'prepare_stmt' error %d\n", rc); |
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230 | |
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231 | rc = sqlite3_step(ppStmt); |
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232 | if((rc != SQLITE_OK) && (rc != 101)) |
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233 | WARNING("ServiceManagementLayer::CreateServicesDB 'step' error\n"); |
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234 | } |
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235 | |
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236 | |
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237 | /* CALLED BY: constructor |
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238 | * INPUTS: <none> |
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239 | * OUTPUTS: <none> |
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240 | * |
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241 | * DESCRIPTION: Create and initialize a DB to hold the data sent by components |
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242 | */ |
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243 | void |
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244 | ServiceManagementLayer::CreateDataDB() |
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245 | { |
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246 | sqlite3_stmt *ppStmt; /* OUT: Statement handle */ |
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247 | const char *pzTail; /* OUT: Pointer to unused portion of zSql */ |
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248 | int32_t rc; /* sqlite command return code */ |
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249 | |
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250 | data_DB = new data_s; |
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251 | |
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252 | data_DB->filename="Data_Table"; |
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253 | sqlite3_open(data_DB->filename.c_str(), &(data_DB->db)); |
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254 | |
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255 | data_DB->tablename = "Data"; |
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256 | data_DB->command = "DROP TABLE if EXISTS Data;"; |
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257 | |
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258 | rc = sqlite3_prepare_v2(data_DB->db, data_DB->command.c_str(), 128, &ppStmt, &pzTail); |
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259 | if((rc != SQLITE_OK) && (rc != 101)) |
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260 | WARNING("ServiceManagementLayer::CreateDataDB 'prepare_stmt' error %d\n", rc); |
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261 | |
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262 | rc = sqlite3_step(ppStmt); |
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263 | if((rc != SQLITE_OK) && (rc != 101)) |
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264 | WARNING("ServiceManagementLayer::CreateDataDB 'step' error\n"); |
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265 | |
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266 | data_DB->num_columns = 2; |
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267 | |
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268 | /* First column is the name of the data (corresponding to the name of the output/input pair) |
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269 | * It is the primary key so any subsequent data with the same name will replace the row. */ |
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270 | data_DB->command = "CREATE TABLE "; |
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271 | data_DB->command.append(data_DB->tablename); |
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272 | data_DB->command.append("(Tag TEXT PRIMARY KEY ON CONFLICT REPLACE, Data TEXT);"); |
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273 | |
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274 | rc = sqlite3_prepare_v2(data_DB->db, data_DB->command.c_str(), 128, &ppStmt, &pzTail); |
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275 | if((rc != SQLITE_OK) && (rc != 101)) |
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276 | WARNING("ServiceManagementLayer::CreateDataDB 'prepare_stmt' error %d\n", rc); |
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277 | |
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278 | rc = sqlite3_step(ppStmt); |
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279 | if((rc != SQLITE_OK) && (rc != 101)) |
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280 | WARNING("ServiceManagementLayer::CreateDataDB 'step' error\n"); |
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281 | } |
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282 | |
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283 | |
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284 | /* CALLED BY: MessageHandler |
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285 | * INPUTS: <none> |
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286 | * OUTPUTS: <none> |
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287 | * |
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288 | * DESCRIPTION: Sends a message identifying this component as an SML to the Shell |
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289 | */ |
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290 | void |
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291 | ServiceManagementLayer::SendComponentType() |
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292 | { |
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293 | SendMessage(shellSocketFD, "response_sml"); |
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294 | LOG("SML responded to GetRemoteComponentType query.\n"); |
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295 | } |
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296 | |
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297 | |
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298 | /* CALLED BY: constructor |
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299 | * INPUTS: |serverName| the IPv4 name of the server (127.0.0.1 for localhost) |
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300 | * |serverPort| the port on the server to connect to |
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301 | * OUTPUTS: <none> |
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302 | * |
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303 | * DESCRIPTION: Connecting to the shell takes 2 steps |
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304 | * 1) Establish a client socket for communication |
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305 | * 2) Run the initial Registration/handshake routine |
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306 | */ |
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307 | void |
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308 | ServiceManagementLayer::ConnectToShell(const char* serverName, \ |
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309 | const char* serverPort) |
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310 | { |
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311 | shellSocketFD = ClientSocket(serverName, serverPort); |
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312 | RegisterComponent(); |
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313 | } |
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314 | |
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315 | |
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316 | /* CALLED BY: StartSMLServer |
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317 | * INPUTS: |ID| The ID number of the CE that has a message wating |
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318 | * OUTPUTS: <none> |
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319 | * |
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320 | * DESCRIPTION: Called whenever a socket is identified as being ready for communication |
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321 | * This funciton reads the message and calls the appropriate helper |
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322 | */ |
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323 | void |
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324 | ServiceManagementLayer::MessageHandler(int32_t ID) |
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325 | { |
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326 | char buffer[256]; |
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327 | memset(buffer, 0, 256); |
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328 | int32_t _FD; |
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329 | |
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330 | if(ID != -1) |
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331 | _FD = CE_List[ID].FD; |
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332 | else |
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333 | _FD = shellSocketFD; |
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334 | |
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335 | ReadMessage(_FD, buffer); |
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336 | |
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337 | /* Go down the list to call the appropriate function */ |
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338 | if(strcmp(buffer, "query_component_type") == 0) { |
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339 | SendComponentType(); |
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340 | } |
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341 | else if(strcmp(buffer, "reset_sml") == 0) { |
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342 | Reset(); |
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343 | } |
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344 | else if(strcmp(buffer, "shutdown_sml") == 0) { |
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345 | Shutdown(); |
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346 | } |
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347 | else if(strcmp(buffer, "register_engine_cognitive") == 0) { |
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348 | RegisterCognitiveEngine(ID); |
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349 | } |
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350 | else if(strcmp(buffer, "register_service") == 0) { |
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351 | ReceiveServices(ID); |
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352 | } |
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353 | else if(strcmp(buffer, "send_component_type") == 0) { |
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354 | SendComponentType(); |
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355 | } |
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356 | else if(strcmp(buffer, "list_services") == 0) { |
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357 | ListServices(); |
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358 | } |
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359 | else if(strcmp(buffer, "set_active_mission") == 0) { |
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360 | SetActiveMission(); |
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361 | } |
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362 | else if(strcmp(buffer, "request_optimization") == 0) { |
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363 | PerformActiveMission(); |
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364 | } |
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365 | else if(strcmp(buffer, "deregister_engine_cognitive") == 0) { |
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366 | DeregisterCognitiveEngine(ID); |
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367 | } |
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368 | else if(strcmp(buffer, "deregister_service") == 0) { |
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369 | DeregisterServices(ID); |
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370 | } |
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371 | } |
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372 | |
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373 | |
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374 | /* CALLED BY: MessageHandler |
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375 | * INPUTS: <none> |
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376 | * OUTPUTS: <none> |
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377 | * |
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378 | * DESCRIPTION: Deregisters the component from the Shell. |
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379 | */ |
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380 | void |
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381 | ServiceManagementLayer::Shutdown() |
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382 | { |
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383 | DeregisterComponent(); |
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384 | } |
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385 | |
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386 | |
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387 | /* CALLED BY: MessageHandler |
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388 | * INPUTS: <none> |
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389 | * OUTPUTS: <none> |
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390 | * |
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391 | * DESCRIPTION: Deregisters the component from the Shell |
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392 | */ |
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393 | void |
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394 | ServiceManagementLayer::Reset() |
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395 | { |
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396 | DeregisterComponent(); |
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397 | ReloadConfiguration(); |
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398 | } |
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399 | |
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400 | |
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401 | /* CALLED BY: ConnectToShell |
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402 | * INPUTS: <none> |
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403 | * OUTPUTS: <none> |
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404 | * |
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405 | * DESCRIPTION: Sends the registration message to the Shell |
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406 | */ |
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407 | void |
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408 | ServiceManagementLayer::RegisterComponent() |
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409 | { |
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410 | SendMessage(shellSocketFD, "register_sml"); |
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411 | LOG("ServiceManagementLayer:: Registration message sent.\n"); |
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412 | } |
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413 | |
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414 | |
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415 | /* CALLED BY: Shutdown |
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416 | * INPUTS: <none> |
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417 | * OUTPUTS: <none> |
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418 | * |
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419 | * DESCRIPTION: Closes the client socket with the shell, sends a deregstration message |
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420 | */ |
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421 | void |
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422 | ServiceManagementLayer::DeregisterComponent() |
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423 | { |
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424 | SendMessage(shellSocketFD, "deregister_sml"); |
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425 | LOG("ServiceManagementLayer:: Deregistration message sent.\n"); |
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426 | |
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427 | shutdown(shellSocketFD, 2); |
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428 | close(shellSocketFD); |
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429 | shellSocketFD = -1; |
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430 | LOG("ServiceManagementLayer:: Shell socket closed.\n"); |
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431 | } |
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432 | |
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433 | |
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434 | /* CALLED BY: RegisterCognitiveEngine |
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435 | * INPUTS: |ID| The ID number of the component where the data is to be transfered to |
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436 | * OUTPUTS: <none> |
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437 | * |
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438 | * DESCRIPTION: Streams config data directly from the shell to the CE, and checks |
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439 | * for an "ack" message from the CE after every sent message |
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440 | * to know when to stop communication. |
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441 | * |
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442 | * NOTE: Modified to check the incoming message buffer rather than the outgoing |
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443 | * message buffer to avoid a portion of the delay. May change this again to handle |
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444 | * data more inteligently, taking advantage of it's properties. |
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445 | */ |
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446 | void |
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447 | ServiceManagementLayer::TransferRadioConfiguration(int32_t ID) |
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448 | { |
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449 | struct timeval selTimeout; |
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450 | fd_set sockSet; |
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451 | int32_t rc = 1; |
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452 | char buffer[256]; |
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453 | |
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454 | /* Send data until the CE sends an ACK message back */ |
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455 | while(rc != 0) { |
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456 | memset(buffer, 0, 256); |
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457 | |
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458 | /* Receive data from Shell */ |
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459 | ReadMessage(shellSocketFD, buffer); |
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460 | |
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461 | /* Send data to CE */ |
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462 | SendMessage(CE_List[ID].FD, buffer); |
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463 | FD_ZERO(&sockSet); |
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464 | FD_SET(shellSocketFD, &sockSet); |
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465 | selTimeout.tv_sec = 0; |
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466 | selTimeout.tv_usec = 5000; |
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467 | |
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468 | /* Check ifthere is a message on the shell ready to be processed */ |
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469 | rc = select(shellSocketFD + 1, &sockSet, NULL, NULL, &selTimeout); |
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470 | } |
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471 | |
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472 | memset(buffer, 0, 256); |
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473 | ReadMessage(CE_List[ID].FD, buffer); |
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474 | SendMessage(shellSocketFD, buffer); |
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475 | } |
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476 | |
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477 | |
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478 | /* CALLED BY: RegisterCognitiveEngine |
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479 | * INPUTS: |ID| The ID number of the component where the data is to be transfered to |
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480 | * OUTPUTS: <none> |
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481 | * |
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482 | * DESCRIPTION: Simmilar to TransferRadioConfig, just with Experience data |
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483 | * |
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484 | * NOTE: Modified to check the incoming message buffer rather than the outgoing |
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485 | * message buffer to avoid a portion of the delay. May change this again to handle |
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486 | * data more inteligently, taking advantage of it's properties. |
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487 | */ |
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488 | void |
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489 | ServiceManagementLayer::TransferExperience(int32_t ID) |
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490 | { |
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491 | struct timeval selTimeout; |
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492 | fd_set sockSet; |
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493 | int32_t rc = 1; |
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494 | char buffer[256]; |
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495 | /* Send data until the CE sends an ACK message back */ |
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496 | while(rc != 0) { |
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497 | memset(buffer, 0, 256); |
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498 | |
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499 | /* Receive data from Shell */ |
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500 | ReadMessage(shellSocketFD, buffer); |
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501 | |
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502 | /* Send data to CE */ |
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503 | SendMessage(CE_List[ID].FD, buffer); |
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504 | FD_ZERO(&sockSet); |
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505 | FD_SET(shellSocketFD, &sockSet); |
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506 | selTimeout.tv_sec = 0; |
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507 | selTimeout.tv_usec = 5000; |
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508 | |
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509 | /* Check ifthere is a message on the shell ready to be processed */ |
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510 | rc = select(shellSocketFD + 1, &sockSet, NULL, NULL, &selTimeout); |
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511 | } |
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512 | |
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513 | memset(buffer, 0, 256); |
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514 | ReadMessage(CE_List[ID].FD, buffer); |
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515 | SendMessage(shellSocketFD, buffer); |
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516 | } |
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517 | |
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518 | |
---|
519 | /* CALLED BY: MessageHandler |
---|
520 | * INPUTS: |ID| The ID number of the component where service is located |
---|
521 | * OUTPUTS: <none> |
---|
522 | * |
---|
523 | * DESCRIPTION: Inserts a service into the DB with the ID of the component where it exists |
---|
524 | */ |
---|
525 | void |
---|
526 | ServiceManagementLayer::ReceiveServices(int32_t ID) |
---|
527 | { |
---|
528 | char buffer[256]; |
---|
529 | memset(buffer, 0, 256); |
---|
530 | ReadMessage(CE_List[ID].FD, buffer); |
---|
531 | |
---|
532 | /* Generate command */ |
---|
533 | services_DB->command = "insert into "; |
---|
534 | services_DB->command.append(services_DB->tablename); |
---|
535 | services_DB->command.append(" (ID_Num, Service_Name) values("); |
---|
536 | |
---|
537 | char temp[3]; |
---|
538 | memset(temp, 0, 3); |
---|
539 | sprintf(temp, "%d", ID); |
---|
540 | |
---|
541 | services_DB->command.append(temp); |
---|
542 | services_DB->command.append(", '"); |
---|
543 | services_DB->command.append(buffer); |
---|
544 | services_DB->command.append("');"); |
---|
545 | |
---|
546 | /* Execute add command */ |
---|
547 | char *errorMsg; |
---|
548 | int rc = sqlite3_exec(services_DB->db, services_DB->command.c_str(), callback, 0, &errorMsg); |
---|
549 | if((rc != SQLITE_OK) && (rc != 101)) |
---|
550 | WARNING("ServiceManagementLayer::RecieveServices DB Error %s\n", errorMsg); |
---|
551 | } |
---|
552 | |
---|
553 | |
---|
554 | /* CALLED BY: MessageHandler |
---|
555 | * INPUTS: <none> |
---|
556 | * OUTPUTS: <none> |
---|
557 | * |
---|
558 | * DESCRIPTION: This method associates the services that components provide with the |
---|
559 | * services that are requested in the mission. Each service in the mission is given |
---|
560 | * the ID and FD of a component that has registered to provide that service. Deregistration |
---|
561 | * is okay until this method is called without a reload, but ifderegistration occurs after this |
---|
562 | * method is called it needs to be called again even ifother engines also provide the services |
---|
563 | */ |
---|
564 | void |
---|
565 | ServiceManagementLayer::SetActiveMission() |
---|
566 | { |
---|
567 | char buffer[256]; |
---|
568 | memset(buffer, 0, 256); |
---|
569 | ReadMessage(shellSocketFD, buffer); |
---|
570 | |
---|
571 | uint32_t missID = atoi(buffer); |
---|
572 | for(activeMission = 0; activeMission < 10; activeMission++) { |
---|
573 | /* Find the active mission by comparing mission ID's */ |
---|
574 | if(miss[activeMission].missionID == missID) |
---|
575 | break; |
---|
576 | } |
---|
577 | |
---|
578 | LOG("ServiceManagementLayer:: Received Set Active Mission command: %i.\n", missID); |
---|
579 | |
---|
580 | /* For each service in the mission */ |
---|
581 | for(size_t i = 0; i < miss[activeMission].numServices; i++) { |
---|
582 | /* Check whether the current service is an actual service or a conditional */ |
---|
583 | if(miss[activeMission].services[i].name.compare("if") && \ |
---|
584 | miss[activeMission].services[i].name.compare("dowhile") && \ |
---|
585 | miss[activeMission].services[i].name.compare("shell")) { |
---|
586 | /* ifit is a service, search the database of registered services to find |
---|
587 | * the ID of the component that registered it */ |
---|
588 | services_DB->command="select "; |
---|
589 | services_DB->command.append(services_DB->tablename); |
---|
590 | services_DB->command.append(".* from "); |
---|
591 | services_DB->command.append( services_DB->tablename); |
---|
592 | services_DB->command.append(" where Service_Name=='"); |
---|
593 | services_DB->command.append(miss[activeMission].services[i].name); |
---|
594 | services_DB->command.append("';"); |
---|
595 | |
---|
596 | sqlite3_stmt * pStatement; |
---|
597 | int32_t rc = sqlite3_prepare_v2(services_DB->db, services_DB->command.c_str(), \ |
---|
598 | -1, &pStatement, NULL); |
---|
599 | if(rc == SQLITE_OK) { |
---|
600 | if(sqlite3_step(pStatement) == SQLITE_ROW) |
---|
601 | miss[activeMission].services[i].componentID = sqlite3_column_int(pStatement, 0); |
---|
602 | else { |
---|
603 | WARNING("services_DB:: Mission requires service %s ", \ |
---|
604 | miss[activeMission].services[i].name.c_str()); |
---|
605 | WARNING("not provided by any connected component.\n"); |
---|
606 | rc = 31337; |
---|
607 | } |
---|
608 | } else { |
---|
609 | WARNING("services_DB:: Error executing SQL statement. rc = %i\n%s\n", \ |
---|
610 | rc, services_DB->command.c_str()); |
---|
611 | } |
---|
612 | |
---|
613 | sqlite3_finalize(pStatement); |
---|
614 | miss[activeMission].services[i].socketFD = \ |
---|
615 | CE_List[miss[activeMission].services[i].componentID].FD; |
---|
616 | } |
---|
617 | /* TODO Nothing to be done for conditionals at this stage */ |
---|
618 | } |
---|
619 | |
---|
620 | SendMessage(shellSocketFD, "ack"); |
---|
621 | LOG("ServiceManagementLayer:: Done setting active mission.\n"); |
---|
622 | } |
---|
623 | |
---|
624 | |
---|
625 | /* CALLED BY: PerformActiveMission |
---|
626 | * INPUTS: |sourceID| ID of the service that is being processed |
---|
627 | * OUTPUTS: <none> |
---|
628 | * |
---|
629 | * DESCRIPTION: This is a helper method for the "PerformActiveMission" function |
---|
630 | * NOTE: This function has changed drastically from the previous implementation |
---|
631 | * |
---|
632 | * Takes an ID of a service. For that service, finds inputs in DB and forwords |
---|
633 | * those on to the engine after sending comm-starting messages. Afterwords, listenes |
---|
634 | * for the outputs so that it can store those in the database for future services or |
---|
635 | * the overall output |
---|
636 | */ |
---|
637 | void |
---|
638 | ServiceManagementLayer::TransactData(int32_t sourceID) |
---|
639 | { |
---|
640 | char buffer[256]; |
---|
641 | std::string data; |
---|
642 | char *token; |
---|
643 | |
---|
644 | /* Send a message directly to the shell */ |
---|
645 | if(miss[activeMission].services[sourceID].name.find("shell") != string::npos) { |
---|
646 | shellUsed=true; |
---|
647 | |
---|
648 | int32_t k = 0; |
---|
649 | while((k < 10) && (!miss[activeMission].input[k].empty())) { |
---|
650 | k++; |
---|
651 | } |
---|
652 | |
---|
653 | sprintf(buffer, "%d", k); |
---|
654 | SendMessage(shellSocketFD, buffer); |
---|
655 | for(int32_t t = 0; t < k; t++) { |
---|
656 | memset(buffer, 0 , 256); |
---|
657 | data_DB->command="select "; |
---|
658 | data_DB->command.append(data_DB->tablename); |
---|
659 | data_DB->command.append(".* from "); |
---|
660 | data_DB->command.append(data_DB->tablename); |
---|
661 | data_DB->command.append(" where Tag=='"); |
---|
662 | data_DB->command.append(miss[activeMission].input[t]); |
---|
663 | data_DB->command.append("';"); |
---|
664 | sqlite3_stmt * pStatement; |
---|
665 | |
---|
666 | int32_t rc = sqlite3_prepare_v2(data_DB->db, data_DB->command.c_str(), \ |
---|
667 | -1, &pStatement, NULL); |
---|
668 | if(rc == SQLITE_OK) { |
---|
669 | if(sqlite3_step(pStatement) == SQLITE_ROW) |
---|
670 | data=((const char*) sqlite3_column_text(pStatement, 1)); |
---|
671 | else { |
---|
672 | LOG("3data_DB:: Data not yet in DB., %s\n", data_DB->command.c_str()); |
---|
673 | rc = 31337; |
---|
674 | } |
---|
675 | } |
---|
676 | else { |
---|
677 | WARNING("data_DB:: Error executing SQL statement. rc = %i\n%s\n", \ |
---|
678 | rc,data_DB->command.c_str()); |
---|
679 | } |
---|
680 | |
---|
681 | sqlite3_finalize(pStatement); |
---|
682 | token = strtok((char *) data.c_str(), "@"); |
---|
683 | token = strtok(NULL, "@"); |
---|
684 | SendMessage(shellSocketFD, token); |
---|
685 | token = strtok(NULL, "@"); |
---|
686 | SendMessage(shellSocketFD, token); |
---|
687 | } |
---|
688 | |
---|
689 | return; |
---|
690 | } |
---|
691 | |
---|
692 | /* ifthis is a service command and not a shell command... */ |
---|
693 | /* Transmission starting messages */ |
---|
694 | SendMessage(miss[activeMission].services[sourceID].socketFD, "request_optimization_service"); |
---|
695 | SendMessage(miss[activeMission].services[sourceID].socketFD, \ |
---|
696 | miss[activeMission].services[sourceID].name.c_str()); |
---|
697 | } |
---|
698 | |
---|
699 | /* CALLED BY: MessageHandler |
---|
700 | * INPUTS: <none> |
---|
701 | * OUTPUTS: <none> |
---|
702 | * |
---|
703 | * DESCRIPTION: This function works by first sending the inputs from the shell to |
---|
704 | * the appropriate components. The first service should begin immeadiately, as |
---|
705 | * should any others who have all of their input parameters. When they complete, |
---|
706 | * the output path is found and the data is transfered as it becomes available |
---|
707 | * Presumably at this point the second function has all of it's parameters, so it |
---|
708 | * begins to compute, and the cycle repeats. |
---|
709 | * |
---|
710 | * Rules for active missions (currently) |
---|
711 | * -Five inputs/outputs per service and per mission |
---|
712 | * -All ordering constraints have been relaxed in this version; all data is stored |
---|
713 | * locally and only sent when requested |
---|
714 | * -ifand while support fully implemented - up to three levels (if's can be nested, but dowhiles cannot) |
---|
715 | * -For dowhiles, assumes loop condition determined on last line |
---|
716 | * |
---|
717 | * -IMPORTANT: DB uses '@' to seperate individual statements; using '@' in the data |
---|
718 | * stream will result in incorrect behavior |
---|
719 | */ |
---|
720 | void |
---|
721 | ServiceManagementLayer::PerformActiveMission() |
---|
722 | { |
---|
723 | shellUsed = false; |
---|
724 | std::string data_param; |
---|
725 | std::string data_obsv; |
---|
726 | std::string data; |
---|
727 | std::string input; |
---|
728 | std::string check; |
---|
729 | |
---|
730 | char buffer[256]; |
---|
731 | char buffer1[256]; |
---|
732 | std::string token, token2; |
---|
733 | std::string data2; |
---|
734 | |
---|
735 | int32_t rc; |
---|
736 | char *errorMsg; |
---|
737 | |
---|
738 | LOG("ServiceManagementLayer:: Received PerformActiveMission command.\n"); |
---|
739 | |
---|
740 | /* Get the inputs */ |
---|
741 | memset(buffer, 0, 256); |
---|
742 | ReadMessage(shellSocketFD, buffer); |
---|
743 | |
---|
744 | /* Receive Set of Parameters */ |
---|
745 | memset(buffer, 0, 256); |
---|
746 | ReadMessage(shellSocketFD, buffer); |
---|
747 | int32_t t = atoi(buffer); |
---|
748 | for(size_t m = 0; m < t; m++) { |
---|
749 | memset(buffer1, 0, 256); |
---|
750 | ReadMessage(shellSocketFD, buffer1); |
---|
751 | data_DB->command="insert into "; |
---|
752 | data_DB->command.append(data_DB->tablename); |
---|
753 | data_DB->command.append(" (Tag, Data) "); |
---|
754 | |
---|
755 | memset(buffer, 0, 256); |
---|
756 | ReadMessage(shellSocketFD, buffer); |
---|
757 | data_DB->command.append(" values('"); |
---|
758 | data_DB->command.append(buffer1); |
---|
759 | data_DB->command.append("', '1@"); |
---|
760 | data_DB->command.append(buffer1); |
---|
761 | data_DB->command.append("@"); |
---|
762 | data_DB->command.append(buffer); |
---|
763 | data_DB->command.append("');"); |
---|
764 | |
---|
765 | rc = sqlite3_exec(data_DB->db, data_DB->command.c_str(), callback, 0, &errorMsg); |
---|
766 | if((rc != SQLITE_OK) && (rc != 101)) |
---|
767 | WARNING("SQL error: %s\n", errorMsg); |
---|
768 | } |
---|
769 | |
---|
770 | int32_t numstatements[3] = {0 ,0 ,0}; |
---|
771 | for(size_t i; i < miss[activeMission].numServices; i++) { |
---|
772 | if(miss[activeMission].services[i].name.compare("if") == 0) { |
---|
773 | input.clear(); |
---|
774 | check.clear(); |
---|
775 | |
---|
776 | for(size_t t = 0; t < 10; t++) { |
---|
777 | if(!miss[activeMission].services[i].output[t].empty()) { |
---|
778 | input = miss[activeMission].services[i - numstatements[0] - 1].output[t]; |
---|
779 | |
---|
780 | data_DB->command="SELECT "; |
---|
781 | data_DB->command.append(data_DB->tablename); |
---|
782 | data_DB->command.append(".* from "); |
---|
783 | data_DB->command.append(data_DB->tablename); |
---|
784 | data_DB->command.append(" where Tag=='"); |
---|
785 | data_DB->command.append(input); |
---|
786 | data_DB->command.append("';"); |
---|
787 | |
---|
788 | sqlite3_stmt *pStatement; |
---|
789 | rc = sqlite3_prepare_v2(data_DB->db, data_DB->command.c_str(), \ |
---|
790 | -1, &pStatement, NULL); |
---|
791 | if(rc == SQLITE_OK) { |
---|
792 | if(sqlite3_step(pStatement) == SQLITE_ROW) |
---|
793 | data = (const char *) sqlite3_column_text(pStatement, 1); |
---|
794 | else { |
---|
795 | WARNING("1 data_DB:: Data not yet in DB.\n"); |
---|
796 | rc=31337; |
---|
797 | } |
---|
798 | } else { |
---|
799 | WARNING("data_DB:: Error executing SQL statement. rc = %i\n%s\n", \ |
---|
800 | rc,data_DB->command.c_str()); |
---|
801 | } |
---|
802 | |
---|
803 | sqlite3_finalize(pStatement); |
---|
804 | int32_t pos = data.find_last_of("@", data.length() - 2); |
---|
805 | token = data.substr(pos + 1); |
---|
806 | token.erase(token.length() - 1); |
---|
807 | data.clear(); |
---|
808 | break; |
---|
809 | } |
---|
810 | } |
---|
811 | |
---|
812 | bool doit = false; |
---|
813 | if(miss[activeMission].services[i].output[t].find(">") != string::npos) { |
---|
814 | std::string data2; |
---|
815 | data_DB->command="SELECT "; |
---|
816 | data_DB->command.append(data_DB->tablename); |
---|
817 | data_DB->command.append(".* from "); |
---|
818 | data_DB->command.append(data_DB->tablename); |
---|
819 | data_DB->command.append(" where Tag=='"); |
---|
820 | data_DB->command.append(miss[activeMission].services[i].output[t].erase(0, 1)); |
---|
821 | data_DB->command.append("';"); |
---|
822 | sqlite3_stmt *pStatement; |
---|
823 | |
---|
824 | rc = sqlite3_prepare_v2(data_DB->db, data_DB->command.c_str(), \ |
---|
825 | -1, &pStatement, NULL); |
---|
826 | if(rc == SQLITE_OK) { |
---|
827 | if(sqlite3_step(pStatement) == SQLITE_ROW) |
---|
828 | data2 = (const char *) sqlite3_column_text(pStatement, 1); |
---|
829 | else { |
---|
830 | WARNING("2 data_DB:: Data not yet in DB.\n"); |
---|
831 | rc = 31337; |
---|
832 | } |
---|
833 | } else { |
---|
834 | WARNING("data_DB:: Error executing SQL statement. rc = %i\n%s\n", \ |
---|
835 | rc, data_DB->command.c_str()); |
---|
836 | } |
---|
837 | |
---|
838 | sqlite3_finalize(pStatement); |
---|
839 | |
---|
840 | int32_t pos = data2.find_last_of("@", data2.length() - 2); |
---|
841 | token2 = data2.substr(pos + 1); |
---|
842 | token2.erase(token2.length() - 1); |
---|
843 | if(atof(token.c_str()) > atof(token2.c_str())) |
---|
844 | doit = true; |
---|
845 | } |
---|
846 | else if(miss[activeMission].services[i].output[t].find(token) != string::npos) |
---|
847 | doit = true; |
---|
848 | |
---|
849 | if(doit) { |
---|
850 | for(size_t k = i + 1; k <= i+miss[activeMission].services[i].num_conds; k++) { |
---|
851 | if(miss[activeMission].services[k].name.compare("if") == 0) { |
---|
852 | input.clear(); |
---|
853 | check.clear(); |
---|
854 | for(size_t t = 0; t < 10; t++) { |
---|
855 | if(!miss[activeMission].services[k].output[t].empty()) { |
---|
856 | input = miss[activeMission].services[k - numstatements[1] - 1].output[t]; |
---|
857 | data_DB->command="SELECT "; |
---|
858 | data_DB->command.append(data_DB->tablename); |
---|
859 | data_DB->command.append(".* from "); |
---|
860 | data_DB->command.append(data_DB->tablename); |
---|
861 | data_DB->command.append(" where Tag=='"); |
---|
862 | data_DB->command.append(input); |
---|
863 | data_DB->command.append("';"); |
---|
864 | |
---|
865 | sqlite3_stmt *pStatement; |
---|
866 | rc = sqlite3_prepare_v2(data_DB->db, data_DB->command.c_str(), \ |
---|
867 | -1, &pStatement, NULL); |
---|
868 | if(rc == SQLITE_OK) { |
---|
869 | if(sqlite3_step(pStatement) == SQLITE_ROW) |
---|
870 | data = (const char *) sqlite3_column_text(pStatement, 1); |
---|
871 | else { |
---|
872 | WARNING("3 data_DB:: Data not yet in DB.\n"); |
---|
873 | rc = 31337; |
---|
874 | } |
---|
875 | } else { |
---|
876 | WARNING("data_DB:: Error executing SQL statement. rc = %i\n%s\n", \ |
---|
877 | rc,data_DB->command.c_str()); |
---|
878 | } |
---|
879 | |
---|
880 | sqlite3_finalize(pStatement); |
---|
881 | int32_t pos = data.find_last_of("@", data.length() - 2); |
---|
882 | token = data.substr(pos + 1); |
---|
883 | token.erase(token.length() - 1); |
---|
884 | break; |
---|
885 | } |
---|
886 | } |
---|
887 | |
---|
888 | bool doit = false; |
---|
889 | if(miss[activeMission].services[k].output[t].find(">") != string::npos) { |
---|
890 | std::string data2; |
---|
891 | data_DB->command="SELECT "; |
---|
892 | data_DB->command.append(data_DB->tablename); |
---|
893 | data_DB->command.append(".* from "); |
---|
894 | data_DB->command.append(data_DB->tablename); |
---|
895 | data_DB->command.append(" where Tag=='"); |
---|
896 | data_DB->command.append(miss[activeMission].services[k].output[t].erase(0, 1)); |
---|
897 | data_DB->command.append("';"); |
---|
898 | |
---|
899 | sqlite3_stmt *pStatement; |
---|
900 | rc = sqlite3_prepare_v2(data_DB->db, data_DB->command.c_str(), \ |
---|
901 | -1, &pStatement, NULL); |
---|
902 | if(rc == SQLITE_OK) { |
---|
903 | if(sqlite3_step(pStatement) == SQLITE_ROW) |
---|
904 | data2 = (const char *) sqlite3_column_text(pStatement, 1); |
---|
905 | else { |
---|
906 | WARNING("4 data_DB:: Data not yet in DB.\n"); |
---|
907 | rc = 31337; |
---|
908 | } |
---|
909 | } else { |
---|
910 | WARNING("data_DB:: Error executing SQL statement. rc = %i\n%s\n", \ |
---|
911 | rc, data_DB->command.c_str()); |
---|
912 | } |
---|
913 | |
---|
914 | sqlite3_finalize(pStatement); |
---|
915 | int32_t pos = data2.find_last_of("@", data2.length() - 2); |
---|
916 | token2 = data2.substr(pos + 1); |
---|
917 | token2.erase(token2.length() - 1); |
---|
918 | if(atof(token.c_str()) > atof(token2.c_str())) |
---|
919 | doit = true; |
---|
920 | } |
---|
921 | else if(miss[activeMission].services[k].output[t].find(token) != string::npos) |
---|
922 | doit=true; |
---|
923 | |
---|
924 | if(doit) { |
---|
925 | for(size_t j = k + 1; j <= k+miss[activeMission].services[k].num_conds; j++) { |
---|
926 | if(miss[activeMission].services[j].name.compare("if") == 0) { |
---|
927 | input.clear(); |
---|
928 | check.clear(); |
---|
929 | for(t = 0; t < 10; t++) { |
---|
930 | if(!miss[activeMission].services[j].output[t].empty()) { |
---|
931 | input = miss[activeMission].services[j - numstatements[2] - 1].output[t]; |
---|
932 | |
---|
933 | data_DB->command="SELECT "; |
---|
934 | data_DB->command.append(data_DB->tablename); |
---|
935 | data_DB->command.append(".* from "); |
---|
936 | data_DB->command.append(data_DB->tablename); |
---|
937 | data_DB->command.append(" where Tag=='"); |
---|
938 | data_DB->command.append(input); |
---|
939 | data_DB->command.append("';"); |
---|
940 | |
---|
941 | sqlite3_stmt *pStatement; |
---|
942 | |
---|
943 | rc = sqlite3_prepare_v2(data_DB->db, data_DB->command.c_str(), -1, &pStatement, NULL); |
---|
944 | if(rc == SQLITE_OK) { |
---|
945 | if(sqlite3_step(pStatement) == SQLITE_ROW) |
---|
946 | data = (const char *) sqlite3_column_text(pStatement, 1); |
---|
947 | else { |
---|
948 | WARNING("5 data_DB:: Data not yet in DB.\n"); |
---|
949 | rc = 31337; |
---|
950 | } |
---|
951 | } else { |
---|
952 | WARNING("data_DB:: Error executing SQL statement. rc = %i\n%s\n", \ |
---|
953 | rc, data_DB->command.c_str()); |
---|
954 | } |
---|
955 | |
---|
956 | sqlite3_finalize(pStatement); |
---|
957 | int32_t pos = data.find_last_of("@", data.length()-2); |
---|
958 | token = data.substr(pos+1); |
---|
959 | token.erase(token.length()-1); |
---|
960 | data.clear(); |
---|
961 | break; |
---|
962 | } |
---|
963 | } |
---|
964 | |
---|
965 | bool doit = false; |
---|
966 | if(miss[activeMission].services[j].output[t].find(">") != string::npos) { |
---|
967 | data_DB->command="SELECT "; |
---|
968 | data_DB->command.append(data_DB->tablename); |
---|
969 | data_DB->command.append(".* from "); |
---|
970 | data_DB->command.append(data_DB->tablename); |
---|
971 | data_DB->command.append(" where Tag=='"); |
---|
972 | data_DB->command.append(miss[activeMission].services[j].output[t].erase(0, 1)); |
---|
973 | data_DB->command.append("';"); |
---|
974 | |
---|
975 | sqlite3_stmt *pStatement; |
---|
976 | rc = sqlite3_prepare_v2(data_DB->db, data_DB->command.c_str(), -1, &pStatement, NULL); |
---|
977 | if(rc == SQLITE_OK) { |
---|
978 | if(sqlite3_step(pStatement) == SQLITE_ROW) |
---|
979 | data2 = (const char *) sqlite3_column_text(pStatement, 1); |
---|
980 | else { |
---|
981 | WARNING("6 data_DB:: Data not yet in DB.\n"); |
---|
982 | rc=31337; |
---|
983 | } |
---|
984 | } else { |
---|
985 | WARNING("data_DB:: Error executing SQL statement. rc = %i\n%s\n", \ |
---|
986 | rc, data_DB->command.c_str()); |
---|
987 | } |
---|
988 | |
---|
989 | sqlite3_finalize(pStatement); |
---|
990 | |
---|
991 | int32_t pos = data2.find_last_of("@", data2.length()-2); |
---|
992 | token2 = data2.substr(pos + 1); |
---|
993 | token2.erase(token2.length()-1); |
---|
994 | |
---|
995 | if(atof(token.c_str()) > atof(token2.c_str())) |
---|
996 | doit=true; |
---|
997 | |
---|
998 | data.clear(); |
---|
999 | } |
---|
1000 | |
---|
1001 | else if(miss[activeMission].services[j].output[t].find(token) != string::npos) |
---|
1002 | doit = true; |
---|
1003 | |
---|
1004 | if(doit) { |
---|
1005 | for(size_t l = j + 1; l <= j + miss[activeMission].services[j].num_conds; l++) { |
---|
1006 | TransactData(l); |
---|
1007 | } |
---|
1008 | } |
---|
1009 | |
---|
1010 | numstatements[2] += miss[activeMission].services[j].num_conds + 1; |
---|
1011 | j += miss[activeMission].services[j].num_conds; |
---|
1012 | } else if(miss[activeMission].services[j].name.compare("dowhile") == 0) { |
---|
1013 | numstatements[0]=0; |
---|
1014 | |
---|
1015 | while(true) { |
---|
1016 | uint32_t l; |
---|
1017 | for(l = j + 1; l <= j+miss[activeMission].services[j].num_conds; l++) { |
---|
1018 | TransactData(l); |
---|
1019 | } |
---|
1020 | |
---|
1021 | data.clear(); |
---|
1022 | input.clear(); |
---|
1023 | check.clear(); |
---|
1024 | |
---|
1025 | int32_t t; |
---|
1026 | for(t = 0; t < 10; t++) { |
---|
1027 | if(!miss[activeMission].services[j].output[t].empty()){ |
---|
1028 | input=miss[activeMission].services[l-2].output[t]; |
---|
1029 | data_DB->command="SELECT "; |
---|
1030 | data_DB->command.append(data_DB->tablename); |
---|
1031 | data_DB->command.append(".* from "); |
---|
1032 | data_DB->command.append(data_DB->tablename); |
---|
1033 | data_DB->command.append(" where Tag=='"); |
---|
1034 | data_DB->command.append(input); |
---|
1035 | data_DB->command.append("';"); |
---|
1036 | sqlite3_stmt *pStatement; |
---|
1037 | |
---|
1038 | rc = sqlite3_prepare_v2(data_DB->db, data_DB->command.c_str(), -1, &pStatement, NULL); |
---|
1039 | if(rc == SQLITE_OK){ |
---|
1040 | if(sqlite3_step(pStatement) == SQLITE_ROW) |
---|
1041 | data = (const char *) sqlite3_column_text(pStatement, 1); |
---|
1042 | else { |
---|
1043 | WARNING("7 data_DB:: Data not yet in DB.: %s\n", data_DB->command.c_str()); |
---|
1044 | rc = 31337; |
---|
1045 | } |
---|
1046 | } else { |
---|
1047 | WARNING("data_DB:: SQL statement error. rc = %i\n%s\n", \ |
---|
1048 | rc, data_DB->command.c_str()); |
---|
1049 | } |
---|
1050 | |
---|
1051 | sqlite3_finalize(pStatement); |
---|
1052 | int32_t pos = data.find_last_of("@", data.length() - 2); |
---|
1053 | token = data.substr(pos + 1); |
---|
1054 | token.erase(token.length() - 1); |
---|
1055 | break; |
---|
1056 | } |
---|
1057 | } |
---|
1058 | |
---|
1059 | if(miss[activeMission].services[j].output[t].find(token) == string::npos) { |
---|
1060 | break; |
---|
1061 | } |
---|
1062 | } |
---|
1063 | |
---|
1064 | j += miss[activeMission].services[j].num_conds; |
---|
1065 | } else { |
---|
1066 | numstatements[2] = 0; |
---|
1067 | TransactData(j); |
---|
1068 | } |
---|
1069 | } |
---|
1070 | } |
---|
1071 | |
---|
1072 | numstatements[1] += miss[activeMission].services[k].num_conds + 1; |
---|
1073 | k += miss[activeMission].services[k].num_conds; |
---|
1074 | } else if(miss[activeMission].services[k].name.compare("dowhile") == 0) { |
---|
1075 | numstatements[0] = 0; |
---|
1076 | while(true) { |
---|
1077 | int32_t j; |
---|
1078 | for(j = k + 1; j <= k + miss[activeMission].services[k].num_conds; j++) { |
---|
1079 | TransactData(j); |
---|
1080 | } |
---|
1081 | |
---|
1082 | data.clear(); |
---|
1083 | input.clear(); |
---|
1084 | check.clear(); |
---|
1085 | int32_t t; |
---|
1086 | for(t = 0; t < 10; t++) { |
---|
1087 | if(!miss[activeMission].services[k].output[t].empty()) { |
---|
1088 | input = miss[activeMission].services[j - 1].output[t]; |
---|
1089 | data_DB->command="SELECT "; |
---|
1090 | data_DB->command.append(data_DB->tablename); |
---|
1091 | data_DB->command.append(".* from "); |
---|
1092 | data_DB->command.append(data_DB->tablename); |
---|
1093 | data_DB->command.append(" where Tag=='"); |
---|
1094 | data_DB->command.append(input); |
---|
1095 | data_DB->command.append("';"); |
---|
1096 | |
---|
1097 | sqlite3_stmt *pStatement; |
---|
1098 | rc = sqlite3_prepare_v2(data_DB->db, data_DB->command.c_str(), -1, &pStatement, NULL); |
---|
1099 | if(rc == SQLITE_OK) { |
---|
1100 | if(sqlite3_step(pStatement) == SQLITE_ROW) |
---|
1101 | data = (const char *) sqlite3_column_text(pStatement, 1); |
---|
1102 | else { |
---|
1103 | WARNING("8 data_DB:: Data not yet in DB.\n"); |
---|
1104 | rc = 31337; |
---|
1105 | } |
---|
1106 | } else { |
---|
1107 | WARNING("data_DB:: Error executing SQL statement. rc = %i\n%s\n", \ |
---|
1108 | rc, data_DB->command.c_str()); |
---|
1109 | } |
---|
1110 | |
---|
1111 | sqlite3_finalize(pStatement); |
---|
1112 | int32_t pos = data.find_last_of("@", data.length() - 2); |
---|
1113 | token = data.substr(pos + 1); |
---|
1114 | token.erase(token.length() - 1); |
---|
1115 | break; |
---|
1116 | } |
---|
1117 | } |
---|
1118 | |
---|
1119 | if(miss[activeMission].services[k].output[t].find(token) == string::npos) { |
---|
1120 | break; |
---|
1121 | } |
---|
1122 | } |
---|
1123 | |
---|
1124 | k += miss[activeMission].services[k].num_conds; |
---|
1125 | } else{ |
---|
1126 | numstatements[1] = 0; |
---|
1127 | TransactData(k); |
---|
1128 | } |
---|
1129 | } |
---|
1130 | } |
---|
1131 | |
---|
1132 | numstatements[0] += miss[activeMission].services[i].num_conds + 1; |
---|
1133 | i += miss[activeMission].services[i].num_conds; |
---|
1134 | } else if(miss[activeMission].services[i].name.compare("dowhile") == 0) { |
---|
1135 | numstatements[0] = 0; |
---|
1136 | while(true) { |
---|
1137 | uint32_t k; |
---|
1138 | for(k = i + 1; k <= i + miss[activeMission].services[i].num_conds; k++){ |
---|
1139 | TransactData(k); |
---|
1140 | } |
---|
1141 | |
---|
1142 | data.clear(); |
---|
1143 | input.clear(); |
---|
1144 | check.clear(); |
---|
1145 | int32_t t; |
---|
1146 | for(t = 0; t < 10; t++){ |
---|
1147 | if(!miss[activeMission].services[i].output[t].empty()) { |
---|
1148 | input = miss[activeMission].services[k - 1].output[t]; |
---|
1149 | data_DB->command="SELECT "; |
---|
1150 | data_DB->command.append(data_DB->tablename); |
---|
1151 | data_DB->command.append(".* from "); |
---|
1152 | data_DB->command.append(data_DB->tablename); |
---|
1153 | data_DB->command.append(" where Tag=='"); |
---|
1154 | data_DB->command.append(input); |
---|
1155 | data_DB->command.append("';"); |
---|
1156 | |
---|
1157 | sqlite3_stmt *pStatement; |
---|
1158 | rc = sqlite3_prepare_v2(data_DB->db, data_DB->command.c_str(), -1, &pStatement, NULL); |
---|
1159 | if(rc == SQLITE_OK) { |
---|
1160 | if(sqlite3_step(pStatement) == SQLITE_ROW) |
---|
1161 | data = (const char *) sqlite3_column_text(pStatement, 1); |
---|
1162 | else { |
---|
1163 | WARNING("10data_DB:: Data not yet in DB.\n"); |
---|
1164 | rc = 31337; |
---|
1165 | } |
---|
1166 | } else { |
---|
1167 | WARNING("data_DB:: Error executing SQL statement. rc = %i\n%s\n", \ |
---|
1168 | rc, data_DB->command.c_str()); |
---|
1169 | } |
---|
1170 | |
---|
1171 | sqlite3_finalize(pStatement); |
---|
1172 | int32_t pos = data.find_last_of("@", data.length()-2); |
---|
1173 | token = data.substr(pos + 1); |
---|
1174 | token.erase(token.length() - 1); |
---|
1175 | break; |
---|
1176 | } |
---|
1177 | } |
---|
1178 | |
---|
1179 | if(miss[activeMission].services[i].output[t].find(token) == string::npos) { |
---|
1180 | break; |
---|
1181 | } |
---|
1182 | } |
---|
1183 | |
---|
1184 | i += miss[activeMission].services[i].num_conds; |
---|
1185 | } else{ |
---|
1186 | numstatements[0] = 0; |
---|
1187 | TransactData(i); |
---|
1188 | } |
---|
1189 | } |
---|
1190 | |
---|
1191 | int32_t i = 0; |
---|
1192 | data.clear(); |
---|
1193 | |
---|
1194 | if(!shellUsed) { |
---|
1195 | int k = 0; |
---|
1196 | while(k < 10 && !miss[activeMission].input[k].empty()) { |
---|
1197 | k++; |
---|
1198 | } |
---|
1199 | |
---|
1200 | sprintf(buffer, "%d", k); |
---|
1201 | SendMessage(shellSocketFD, buffer); |
---|
1202 | |
---|
1203 | for(size_t t = 0; t < k; t++) { |
---|
1204 | SendMessage(shellSocketFD, miss[activeMission].input[t].c_str()); |
---|
1205 | SendMessage(shellSocketFD, "0"); |
---|
1206 | } |
---|
1207 | } |
---|
1208 | |
---|
1209 | LOG("ServiceManagementLayer:: Done performing active mission.\n"); |
---|
1210 | } |
---|
1211 | |
---|
1212 | |
---|
1213 | /* CALLED BY: MessageHandler |
---|
1214 | * INPUTS: <none> |
---|
1215 | * OUTPUTS: <none> |
---|
1216 | * |
---|
1217 | * DESCRIPTION: Print a list of the services currently registered and the ID's of the components that registered them |
---|
1218 | */ |
---|
1219 | void |
---|
1220 | ServiceManagementLayer::ListServices() |
---|
1221 | { |
---|
1222 | services_DB->command="select "; |
---|
1223 | services_DB->command.append(services_DB->tablename); |
---|
1224 | services_DB->command.append(".* from "); |
---|
1225 | services_DB->command.append(services_DB->tablename); |
---|
1226 | services_DB->command.append(";"); |
---|
1227 | |
---|
1228 | // Execute print (select all) command |
---|
1229 | char *errorMsg; |
---|
1230 | int32_t rc = sqlite3_exec(services_DB->db, services_DB->command.c_str(), callback, 0, &errorMsg); |
---|
1231 | if((rc != SQLITE_OK) && (rc != 101)) |
---|
1232 | WARNING("SQL error: %s\n", errorMsg); |
---|
1233 | |
---|
1234 | LOG("database %s, table %s:\n", services_DB->filename.c_str(), services_DB->tablename.c_str()); |
---|
1235 | } |
---|
1236 | |
---|
1237 | |
---|
1238 | /* CALLED BY: Reset |
---|
1239 | * INPUTS: <none> |
---|
1240 | * OUTPUTS: <none> |
---|
1241 | * |
---|
1242 | * DESCRIPTION: Clear and reinitialize the mission array, then reload the configuration file |
---|
1243 | */ |
---|
1244 | void |
---|
1245 | ServiceManagementLayer::ReloadConfiguration() |
---|
1246 | { |
---|
1247 | LOG("ServiceManagementLayer:: Reloading Configuration.\n"); |
---|
1248 | |
---|
1249 | free(miss); |
---|
1250 | |
---|
1251 | miss = new Mission[10]; |
---|
1252 | for(size_t i = 0; i < 10; i++) |
---|
1253 | miss[i].services = new Service[30]; |
---|
1254 | |
---|
1255 | LoadConfiguration(_SML_Config.c_str(), miss); |
---|
1256 | } |
---|
1257 | |
---|
1258 | |
---|
1259 | /* CALLED BY: constructor |
---|
1260 | * INPUTS: |SML_Config| Address (either relitive or full) of the XML file containing mission data |
---|
1261 | * |mList| Mission array to be modified |
---|
1262 | * OUTPUTS: <none> |
---|
1263 | * |
---|
1264 | * DESCRIPTION: IMPORTANT - See formatting instructions for correct parsing of data |
---|
1265 | * Can currently handle 10 inputs and 10 outputs per service, but easily expandable |
---|
1266 | * Also, can handle two layer of nested conditional statements, but could |
---|
1267 | * be expanded to meet additional needs. |
---|
1268 | * |
---|
1269 | * Components assigned to mission during "set active mission" stage so that |
---|
1270 | * components can still continue to register after the configuration is loaded |
---|
1271 | */ |
---|
1272 | void |
---|
1273 | ServiceManagementLayer::LoadConfiguration(const char *SML_Config, Mission* &mList) |
---|
1274 | { |
---|
1275 | TiXmlElement *pMission; |
---|
1276 | TiXmlElement *pService; |
---|
1277 | TiXmlElement *pChild0, *pChild1, *pChild2, *pChild3, *pChild4; |
---|
1278 | TiXmlHandle hRoot(0); |
---|
1279 | |
---|
1280 | LOG("ServiceManagementLayer:: Loading Configuration.\n"); |
---|
1281 | |
---|
1282 | TiXmlDocument doc("."); |
---|
1283 | doc.LoadFile(SML_Config); |
---|
1284 | bool loadOkay = doc.LoadFile(); |
---|
1285 | if(!loadOkay) |
---|
1286 | WARNING("Loading SML configuration failed: %s\n", SML_Config); |
---|
1287 | |
---|
1288 | TiXmlHandle hDoc(&doc); |
---|
1289 | |
---|
1290 | pMission = hDoc.FirstChildElement().Element(); |
---|
1291 | |
---|
1292 | if(!pMission) |
---|
1293 | WARNING("No valid root!"); |
---|
1294 | |
---|
1295 | hRoot = TiXmlHandle(pMission); |
---|
1296 | pService = pMission->FirstChildElement(); |
---|
1297 | |
---|
1298 | int32_t mission_num = 0; |
---|
1299 | |
---|
1300 | /* Iterate through the missions */ |
---|
1301 | for(pChild0 = pMission->FirstChildElement(); pChild0 ; pChild0 = pChild0->NextSiblingElement()) { |
---|
1302 | int32_t service_num = 0; |
---|
1303 | uint16_t cond_array[] = {0, 0, 0}; |
---|
1304 | |
---|
1305 | for(pChild1 = (pChild0->FirstChildElement())->FirstChildElement(); pChild1; \ |
---|
1306 | pChild1 = pChild1->NextSiblingElement()) { |
---|
1307 | |
---|
1308 | int32_t conditional_0 = service_num; |
---|
1309 | for(pChild2 = pChild1->FirstChildElement(); pChild2; pChild2 = pChild2->NextSiblingElement()) { |
---|
1310 | service_num++; |
---|
1311 | |
---|
1312 | int32_t conditional_1 = service_num; |
---|
1313 | for(pChild3 = pChild2->FirstChildElement(); pChild3; pChild3 = pChild3->NextSiblingElement()) { |
---|
1314 | service_num++; |
---|
1315 | int32_t conditional_2 = service_num; |
---|
1316 | for(pChild4 = pChild3->FirstChildElement(); pChild4; pChild4 = pChild4->NextSiblingElement()) { |
---|
1317 | service_num++; |
---|
1318 | if(pChild4->Attribute("name")) |
---|
1319 | mList[mission_num].services[service_num].name = pChild4->Attribute("name"); |
---|
1320 | else |
---|
1321 | mList[mission_num].services[service_num].name = pChild4->Value(); |
---|
1322 | |
---|
1323 | for(size_t i = 1; i <= 10; i++) { |
---|
1324 | char buffer[9]="input"; |
---|
1325 | sprintf(buffer, "%s%d", buffer, i); |
---|
1326 | if(pChild4->Attribute(buffer)) |
---|
1327 | mList[mission_num].services[service_num].input[i - 1] = pChild4->Attribute(buffer); |
---|
1328 | |
---|
1329 | char buffer2[9]="output"; |
---|
1330 | sprintf(buffer2, "%s%d", buffer2, i); |
---|
1331 | if(pChild4->Attribute(buffer2)) |
---|
1332 | mList[mission_num].services[service_num].output[i - 1] = pChild4->Attribute(buffer2); |
---|
1333 | } |
---|
1334 | |
---|
1335 | if(pChild4->Attribute("parameter")) |
---|
1336 | mList[mission_num].services[service_num].parameter = pChild4->Attribute("parameter"); |
---|
1337 | |
---|
1338 | cond_array[2]++; |
---|
1339 | } |
---|
1340 | |
---|
1341 | if(!strcmp(pChild3->Value(), "shell") || conditional_2 != service_num) { |
---|
1342 | mList[mission_num].services[conditional_2].name = pChild3->Value(); |
---|
1343 | } else { |
---|
1344 | mList[mission_num].services[service_num].name = pChild3->Attribute("name"); |
---|
1345 | } |
---|
1346 | |
---|
1347 | for(size_t i = 1; i <= 10; i++) { |
---|
1348 | char buffer[9]="input"; |
---|
1349 | sprintf(buffer, "%s%d", buffer, i); |
---|
1350 | if(pChild3->Attribute(buffer)) |
---|
1351 | mList[mission_num].services[conditional_2].input[i - 1] = pChild3->Attribute(buffer); |
---|
1352 | |
---|
1353 | char buffer2[9]="output"; |
---|
1354 | sprintf(buffer2, "%s%d", buffer2, i); |
---|
1355 | if(pChild3->Attribute(buffer2)) |
---|
1356 | mList[mission_num].services[conditional_2].output[i - 1] = pChild3->Attribute(buffer2); |
---|
1357 | } |
---|
1358 | |
---|
1359 | if(pChild3->Attribute("parameter")) |
---|
1360 | mList[mission_num].services[conditional_2].parameter = pChild3->Attribute("parameter"); |
---|
1361 | |
---|
1362 | mList[mission_num].services[conditional_2].num_conds = cond_array[2]; |
---|
1363 | cond_array[1] += cond_array[2] + 1; |
---|
1364 | cond_array[2] = 0; |
---|
1365 | } |
---|
1366 | |
---|
1367 | if(!strcmp(pChild2->Value(), "shell") || (conditional_1 != service_num)) { |
---|
1368 | mList[mission_num].services[conditional_1].name = pChild2->Value(); |
---|
1369 | } else{ |
---|
1370 | mList[mission_num].services[service_num].name = pChild2->Attribute("name"); |
---|
1371 | } |
---|
1372 | |
---|
1373 | for(int i = 1; i <= 10; i++) { |
---|
1374 | char buffer[9]="input"; |
---|
1375 | sprintf(buffer, "%s%d", buffer, i); |
---|
1376 | if(pChild2->Attribute(buffer)) |
---|
1377 | mList[mission_num].services[conditional_1].input[i - 1] = pChild2->Attribute(buffer); |
---|
1378 | |
---|
1379 | char buffer2[9]="output"; |
---|
1380 | sprintf(buffer2, "%s%d", buffer2, i); |
---|
1381 | if(pChild2->Attribute(buffer2)) |
---|
1382 | mList[mission_num].services[conditional_1].output[i - 1] = pChild2->Attribute(buffer2); |
---|
1383 | } |
---|
1384 | |
---|
1385 | if(pChild2->Attribute("parameter")) |
---|
1386 | mList[mission_num].services[conditional_1].parameter = pChild2->Attribute("parameter"); |
---|
1387 | |
---|
1388 | mList[mission_num].services[conditional_1].num_conds = cond_array[1]; |
---|
1389 | cond_array[0] += cond_array[1] + 1; |
---|
1390 | cond_array[1] = 0; |
---|
1391 | } |
---|
1392 | |
---|
1393 | if(!strcmp(pChild1->Value(), "shell") || conditional_0 != service_num) { |
---|
1394 | mList[mission_num].services[conditional_0].name = pChild1->Value(); |
---|
1395 | } else{ |
---|
1396 | mList[mission_num].services[conditional_0].name = pChild1->Attribute("name"); |
---|
1397 | } |
---|
1398 | |
---|
1399 | for(size_t i = 1; i <= 10; i++) { |
---|
1400 | char buffer[9]="input"; |
---|
1401 | sprintf(buffer, "%s%d", buffer, i); |
---|
1402 | if(pChild1->Attribute(buffer)) |
---|
1403 | mList[mission_num].services[conditional_0].input[i-1] = pChild1->Attribute(buffer); |
---|
1404 | |
---|
1405 | char buffer2[9]="output"; |
---|
1406 | sprintf(buffer2, "%s%d", buffer2, i); |
---|
1407 | if(pChild1->Attribute(buffer2)) |
---|
1408 | mList[mission_num].services[conditional_0].output[i-1] = pChild1->Attribute(buffer2); |
---|
1409 | } |
---|
1410 | |
---|
1411 | if(pChild1->Attribute("parameter")) |
---|
1412 | mList[mission_num].services[conditional_0].parameter = pChild1->Attribute("parameter"); |
---|
1413 | mList[mission_num].services[conditional_0].num_conds = cond_array[0]; |
---|
1414 | cond_array[0] = 0; |
---|
1415 | |
---|
1416 | service_num++; |
---|
1417 | } |
---|
1418 | |
---|
1419 | mList[mission_num].numServices = service_num; |
---|
1420 | mList[mission_num].name = pChild0->Attribute("name"); |
---|
1421 | mList[mission_num].missionID = atoi(pChild0->Attribute("id")); |
---|
1422 | |
---|
1423 | for(size_t i = 1; i <= 10; i++) { |
---|
1424 | char buffer[9]="param"; |
---|
1425 | sprintf(buffer, "%s%d", buffer, i); |
---|
1426 | if(pChild0->Attribute(buffer)){ |
---|
1427 | mList[mission_num].input[i-1] = pChild0->Attribute(buffer); |
---|
1428 | } |
---|
1429 | } |
---|
1430 | |
---|
1431 | mission_num++; |
---|
1432 | } |
---|
1433 | |
---|
1434 | LOG("ServiceManagementLayer:: Done Loading Configuration\n"); |
---|
1435 | } |
---|
1436 | |
---|
1437 | |
---|
1438 | /* CALLED BY: MessageHandler |
---|
1439 | * INPUTS: |ID| The ID number of the engine to be registered |
---|
1440 | * OUTPUTS: <none> |
---|
1441 | * |
---|
1442 | * DESCRIPTION: Sends a registration message onto the shell and sends the ACK back to the component |
---|
1443 | */ |
---|
1444 | void |
---|
1445 | ServiceManagementLayer::RegisterCognitiveEngine(int32_t ID) |
---|
1446 | { |
---|
1447 | SendMessage(shellSocketFD, "register_engine_cognitive"); |
---|
1448 | |
---|
1449 | LOG("ServiceManagementLayer:: CE registration message forwarded to shell.\n"); |
---|
1450 | char buffer[256]; |
---|
1451 | memset(buffer, 0, 256); |
---|
1452 | ReadMessage(shellSocketFD, buffer); |
---|
1453 | SendMessage(CE_List[ID].FD, buffer); |
---|
1454 | |
---|
1455 | TransferRadioConfiguration(ID); |
---|
1456 | memset(buffer, 0, 256); |
---|
1457 | TransferExperience(ID); |
---|
1458 | memset(buffer, 0, 256); |
---|
1459 | numberOfCognitiveEngines++; |
---|
1460 | CE_Present = true; |
---|
1461 | } |
---|
1462 | |
---|
1463 | |
---|
1464 | /* CALLED BY: MessageHandler |
---|
1465 | * INPUTS: |ID| The ID number of the engine to have it's services deregistered |
---|
1466 | * OUTPUTS: <none> |
---|
1467 | * |
---|
1468 | * DESCRIPTION: Deletes individual services from the DB |
---|
1469 | * NOTE THAT this function only needs to be called ifservice deregistration is going |
---|
1470 | * to be done at a different time than component deregistration; it is handled |
---|
1471 | * more efficiently and directly during that deregistration process. |
---|
1472 | */ |
---|
1473 | void |
---|
1474 | ServiceManagementLayer::DeregisterServices(int32_t ID) |
---|
1475 | { |
---|
1476 | char buffer[256]; |
---|
1477 | memset(buffer, 0, 256); |
---|
1478 | ReadMessage(CE_List[ID].FD, buffer); |
---|
1479 | services_DB->command="DELETE FROM "; |
---|
1480 | services_DB->command.append(services_DB->tablename); |
---|
1481 | services_DB->command.append(" WHERE ID_Num IN (SELECT "); |
---|
1482 | |
---|
1483 | char tmp[3]; |
---|
1484 | memset(tmp,0,3); |
---|
1485 | sprintf(tmp, "%d", ID); |
---|
1486 | services_DB->command.append(tmp); |
---|
1487 | services_DB->command.append(" FROM "); |
---|
1488 | services_DB->command.append(services_DB->tablename); |
---|
1489 | services_DB->command.append(" WHERE Service_Name"); |
---|
1490 | services_DB->command.append("=='"); |
---|
1491 | services_DB->command.append(buffer); |
---|
1492 | services_DB->command.append("');"); |
---|
1493 | |
---|
1494 | char *errorMsg; |
---|
1495 | int32_t rc = sqlite3_exec(services_DB->db, services_DB->command.c_str(), callback, 0, &errorMsg); |
---|
1496 | if((rc != SQLITE_OK) && (rc != 101)) |
---|
1497 | WARNING("SQL error: %s\n", errorMsg); |
---|
1498 | } |
---|
1499 | |
---|
1500 | |
---|
1501 | /* CALLED BY: MessageHandler |
---|
1502 | * INPUTS: |ID| The ID number of the engine to have it's services deregistered |
---|
1503 | * OUTPUTS: <none> |
---|
1504 | * |
---|
1505 | * DESCRIPTION: Deletes the contact info for the cognitive engine, forwards a deregistration message to the shell |
---|
1506 | * Also, deletes the services from the DB |
---|
1507 | */ |
---|
1508 | void |
---|
1509 | ServiceManagementLayer::DeregisterCognitiveEngine(int32_t ID) |
---|
1510 | { |
---|
1511 | LOG("ServiceManagementLayer:: CE deregistration message forwarded to shell.\n"); |
---|
1512 | |
---|
1513 | numberOfCognitiveEngines--; |
---|
1514 | if(numberOfCognitiveEngines == 0) |
---|
1515 | CE_Present = false; |
---|
1516 | |
---|
1517 | SendMessage(shellSocketFD, "deregister_engine_cognitive"); |
---|
1518 | char buffer[256]; |
---|
1519 | memset(buffer, 0, 256); |
---|
1520 | ReadMessage(shellSocketFD, buffer); |
---|
1521 | SendMessage(CE_List[ID].FD, buffer); |
---|
1522 | if(strcmp("deregister_ack", buffer) != 0) { |
---|
1523 | ERROR(1, "SML:: Failed to close CE socket\n"); |
---|
1524 | } |
---|
1525 | |
---|
1526 | //Deregister the services |
---|
1527 | services_DB->command="DELETE FROM "; |
---|
1528 | services_DB->command.append(services_DB->tablename); |
---|
1529 | services_DB->command.append(" WHERE "); |
---|
1530 | services_DB->command.append("ID_Num"); |
---|
1531 | services_DB->command.append("=="); |
---|
1532 | |
---|
1533 | char tmp[3]; |
---|
1534 | memset(tmp,0,3); |
---|
1535 | sprintf(tmp, "%d", ID); |
---|
1536 | services_DB->command.append(tmp); |
---|
1537 | services_DB->command.append(";"); |
---|
1538 | |
---|
1539 | char *errorMsg; |
---|
1540 | int32_t rc = sqlite3_exec(services_DB->db, services_DB->command.c_str(), callback, 0, &errorMsg); |
---|
1541 | if((rc != SQLITE_OK) && (rc != 101)) |
---|
1542 | WARNING("SQL error: %s\n", errorMsg); |
---|
1543 | |
---|
1544 | CE_List[ID].FD = -1; |
---|
1545 | CE_List[ID].ID_num = -1; |
---|
1546 | |
---|
1547 | LOG("Cognitive Radio Shell:: CE Socket closed for engine #%d.\n", ID); |
---|
1548 | } |
---|
1549 | |
---|
1550 | |
---|
1551 | /* CALLED BY: test class |
---|
1552 | * INPUTS: <none> |
---|
1553 | * OUTPUTS: <none> |
---|
1554 | * |
---|
1555 | * DESCRIPTION: Sets up a server socket and listens for communication on either that or the shell socket |
---|
1556 | */ |
---|
1557 | void |
---|
1558 | ServiceManagementLayer::StartSMLServer() |
---|
1559 | { |
---|
1560 | struct timeval selTimeout; |
---|
1561 | int32_t running = 1; |
---|
1562 | int32_t port, rc, new_sd = 1; |
---|
1563 | int32_t desc_ready = 1; |
---|
1564 | fd_set sockSet, shellSet; |
---|
1565 | |
---|
1566 | cogEngSrv = CreateTCPServerSocket(SMLport); |
---|
1567 | int32_t maxDescriptor = cogEngSrv; |
---|
1568 | |
---|
1569 | if(InitializeTCPServerPort(cogEngSrv) == -1) |
---|
1570 | ERROR(1,"Error initializing primary port\n"); |
---|
1571 | |
---|
1572 | while (running) { |
---|
1573 | /* Zero socket descriptor vector and set for server sockets */ |
---|
1574 | /* This must be reset every time select() is called */ |
---|
1575 | FD_ZERO(&sockSet); |
---|
1576 | FD_SET(cogEngSrv, &sockSet); |
---|
1577 | |
---|
1578 | for(uint16_t k = 0; k < Current_ID; k++){ |
---|
1579 | if(CE_List[k].ID_num != -1) |
---|
1580 | FD_SET(CE_List[k].FD, &sockSet); |
---|
1581 | } |
---|
1582 | |
---|
1583 | /* Timeout specification */ |
---|
1584 | /* This must be reset every time select() is called */ |
---|
1585 | selTimeout.tv_sec = 0; /* timeout (secs.) */ |
---|
1586 | selTimeout.tv_usec = 0; /* 0 microseconds */ |
---|
1587 | |
---|
1588 | /* Changed both to zero so that select will check messages from the shell |
---|
1589 | * instead of blocking when there is no command from the CE's to be processed */ |
---|
1590 | |
---|
1591 | /* Check ifthere is a message on the socket waiting to be read */ |
---|
1592 | rc = select(maxDescriptor + 1, &sockSet, NULL, NULL, &selTimeout); |
---|
1593 | if(rc == 0) { |
---|
1594 | FD_ZERO(&shellSet); |
---|
1595 | FD_SET(shellSocketFD, &shellSet); |
---|
1596 | selTimeout.tv_sec = 0; |
---|
1597 | selTimeout.tv_usec = 0; |
---|
1598 | |
---|
1599 | /* Check if there is a message on the shell socket ready to be processed */ |
---|
1600 | select(shellSocketFD + 1, &shellSet, NULL, NULL, &selTimeout); |
---|
1601 | if(FD_ISSET(shellSocketFD, &shellSet)){ |
---|
1602 | MessageHandler(-1);} |
---|
1603 | } else { |
---|
1604 | desc_ready = rc; |
---|
1605 | for(port = 0; port <= maxDescriptor && desc_ready > 0; port++) { |
---|
1606 | if(FD_ISSET(port, &sockSet)) { |
---|
1607 | desc_ready -= 1; |
---|
1608 | |
---|
1609 | /* Check ifrequest is new or on an existing open descriptor */ |
---|
1610 | if(port == cogEngSrv) { |
---|
1611 | /* If new, assign it a descriptor and give it an ID */ |
---|
1612 | new_sd = AcceptTCPConnection(port); |
---|
1613 | |
---|
1614 | if(new_sd < 0) |
---|
1615 | break; |
---|
1616 | |
---|
1617 | CE_List[Current_ID].FD = new_sd; |
---|
1618 | CE_List[Current_ID].ID_num = Current_ID; |
---|
1619 | MessageHandler(Current_ID); |
---|
1620 | Current_ID++; |
---|
1621 | |
---|
1622 | FD_SET(new_sd,&sockSet); |
---|
1623 | if(new_sd > maxDescriptor) |
---|
1624 | maxDescriptor = new_sd; |
---|
1625 | } else { |
---|
1626 | /* If old, figure out which ID it coresponds to and handle it accordingly */ |
---|
1627 | for(size_t z = 0; z < Current_ID; z++) { |
---|
1628 | if(CE_List[z].FD == port) { |
---|
1629 | MessageHandler(z); |
---|
1630 | } |
---|
1631 | } |
---|
1632 | } |
---|
1633 | } |
---|
1634 | } |
---|
1635 | } |
---|
1636 | } |
---|
1637 | |
---|
1638 | /* Close sockets */ |
---|
1639 | close(cogEngSrv); |
---|
1640 | |
---|
1641 | return; |
---|
1642 | } |
---|
1643 | |
---|