annotate OrthancServer/LuaScripting.cpp @ 1437:02f5a3f5c0a0

access to the REST API from Lua
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 30 Jun 2015 18:41:33 +0200
parents 0a3e3be59094
children 3567503c00a7
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "PrecompiledHeadersServer.h"
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34 #include "LuaScripting.h"
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35
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36 #include "ServerContext.h"
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37 #include "OrthancInitialization.h"
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38 #include "../Core/Lua/LuaFunctionCall.h"
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39 #include "../Core/HttpServer/StringHttpOutput.h"
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40
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41 #include "Scheduler/DeleteInstanceCommand.h"
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42 #include "Scheduler/StoreScuCommand.h"
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43 #include "Scheduler/StorePeerCommand.h"
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44 #include "Scheduler/ModifyInstanceCommand.h"
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45 #include "Scheduler/CallSystemCommand.h"
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46 #include "OrthancRestApi/OrthancRestApi.h"
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47
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48 #include <glog/logging.h>
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49 #include <EmbeddedResources.h>
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50
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51
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52 namespace Orthanc
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53 {
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54 OrthancRestApi* LuaScripting::GetRestApi(lua_State *state)
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55 {
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56 const void* value = LuaContext::GetGlobalVariable(state, "_RestApi");
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57 return const_cast<OrthancRestApi*>(reinterpret_cast<const OrthancRestApi*>(value));
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58 }
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59
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60
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61 int LuaScripting::RestApiGet(lua_State *state)
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62 {
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63 OrthancRestApi* restApi = GetRestApi(state);
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64 if (restApi == NULL)
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65 {
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66 LOG(ERROR) << "Lua: The REST API is unavailable";
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67 lua_pushnil(state);
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68 return 1;
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69 }
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70
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71 // Check the types of the arguments
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72 int nArgs = lua_gettop(state);
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73 if (nArgs != 1 || !lua_isstring(state, 1)) // URI
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74 {
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75 LOG(ERROR) << "Lua: Bad parameters to RestApiGet()";
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76 lua_pushnil(state);
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77 return 1;
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78 }
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79
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80 const char* uri = lua_tostring(state, 1);
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81
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82 std::string str;
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83 if (restApi->SimpleGet(str, uri))
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84 {
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85 lua_pushstring(state, str.c_str());
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86 }
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87 else
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88 {
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89 LOG(ERROR) << "Lua: Error in RestApiGet() for URI " << uri;
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90 lua_pushnil(state);
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91 }
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92
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93 return 1;
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94 }
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95
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96
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97 IServerCommand* LuaScripting::ParseOperation(const std::string& operation,
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98 const Json::Value& parameters)
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99 {
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100 if (operation == "delete")
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101 {
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102 LOG(INFO) << "Lua script to delete resource " << parameters["Resource"].asString();
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103 return new DeleteInstanceCommand(context_);
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104 }
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105
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106 if (operation == "store-scu")
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107 {
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108 std::string localAet;
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109 if (parameters.isMember("LocalAet"))
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110 {
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111 localAet = parameters["LocalAet"].asString();
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112 }
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113 else
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114 {
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115 localAet = context_.GetDefaultLocalApplicationEntityTitle();
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116 }
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117
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118 std::string modality = parameters["Modality"].asString();
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119 LOG(INFO) << "Lua script to send resource " << parameters["Resource"].asString()
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120 << " to modality " << modality << " using Store-SCU";
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121 return new StoreScuCommand(context_, localAet,
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122 Configuration::GetModalityUsingSymbolicName(modality), true);
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123 }
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124
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125 if (operation == "store-peer")
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126 {
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127 std::string peer = parameters["Peer"].asString();
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128 LOG(INFO) << "Lua script to send resource " << parameters["Resource"].asString()
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129 << " to peer " << peer << " using HTTP";
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130
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131 OrthancPeerParameters parameters;
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132 Configuration::GetOrthancPeer(parameters, peer);
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133 return new StorePeerCommand(context_, parameters, true);
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134 }
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135
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136 if (operation == "modify")
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137 {
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138 LOG(INFO) << "Lua script to modify resource " << parameters["Resource"].asString();
1433
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139 DicomModification modification;
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140 OrthancRestApi::ParseModifyRequest(modification, parameters);
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141
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142 std::auto_ptr<ModifyInstanceCommand> command(new ModifyInstanceCommand(context_, modification));
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143 return command.release();
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144 }
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145
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146 if (operation == "call-system")
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147 {
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148 LOG(INFO) << "Lua script to call system command on " << parameters["Resource"].asString();
1433
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149
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150 const Json::Value& argsIn = parameters["Arguments"];
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151 if (argsIn.type() != Json::arrayValue)
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152 {
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153 throw OrthancException(ErrorCode_BadParameterType);
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154 }
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155
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156 std::vector<std::string> args;
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157 args.reserve(argsIn.size());
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158 for (Json::Value::ArrayIndex i = 0; i < argsIn.size(); ++i)
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159 {
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160 // http://jsoncpp.sourceforge.net/namespace_json.html#7d654b75c16a57007925868e38212b4e
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161 switch (argsIn[i].type())
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162 {
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163 case Json::stringValue:
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164 args.push_back(argsIn[i].asString());
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165 break;
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166
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167 case Json::intValue:
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168 args.push_back(boost::lexical_cast<std::string>(argsIn[i].asInt()));
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169 break;
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170
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171 case Json::uintValue:
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172 args.push_back(boost::lexical_cast<std::string>(argsIn[i].asUInt()));
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173 break;
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174
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175 case Json::realValue:
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176 args.push_back(boost::lexical_cast<std::string>(argsIn[i].asFloat()));
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177 break;
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178
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179 default:
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180 throw OrthancException(ErrorCode_BadParameterType);
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181 }
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182 }
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183
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184 return new CallSystemCommand(context_, parameters["Command"].asString(), args);
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185 }
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186
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187 throw OrthancException(ErrorCode_ParameterOutOfRange);
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188 }
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189
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190
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191 void LuaScripting::InitializeJob()
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192 {
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193 lua_.Execute("_InitializeJob()");
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194 }
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195
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196
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197 void LuaScripting::SubmitJob(const std::string& description)
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198 {
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199 Json::Value operations;
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200 LuaFunctionCall call2(lua_, "_AccessJob");
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201 call2.ExecuteToJson(operations);
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202
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203 if (operations.type() != Json::arrayValue)
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204 {
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205 throw OrthancException(ErrorCode_InternalError);
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206 }
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207
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208 ServerJob job;
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209 ServerCommandInstance* previousCommand = NULL;
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diff changeset
210
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211 for (Json::Value::ArrayIndex i = 0; i < operations.size(); ++i)
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diff changeset
212 {
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diff changeset
213 if (operations[i].type() != Json::objectValue ||
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214 !operations[i].isMember("Operation"))
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215 {
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216 throw OrthancException(ErrorCode_InternalError);
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diff changeset
217 }
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diff changeset
218
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219 const Json::Value& parameters = operations[i];
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220 std::string operation = parameters["Operation"].asString();
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diff changeset
221
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diff changeset
222 ServerCommandInstance& command = job.AddCommand(ParseOperation(operation, operations[i]));
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diff changeset
223
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diff changeset
224 if (!parameters.isMember("Resource"))
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diff changeset
225 {
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diff changeset
226 throw OrthancException(ErrorCode_InternalError);
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diff changeset
227 }
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diff changeset
228
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diff changeset
229 std::string resource = parameters["Resource"].asString();
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diff changeset
230 if (resource.empty())
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diff changeset
231 {
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diff changeset
232 previousCommand->ConnectOutput(command);
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diff changeset
233 }
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diff changeset
234 else
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diff changeset
235 {
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diff changeset
236 command.AddInput(resource);
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diff changeset
237 }
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diff changeset
238
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diff changeset
239 previousCommand = &command;
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diff changeset
240 }
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diff changeset
241
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diff changeset
242 job.SetDescription(description);
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diff changeset
243 context_.GetScheduler().Submit(job);
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diff changeset
244 }
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diff changeset
245
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diff changeset
246
1437
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diff changeset
247 LuaScripting::LuaScripting(ServerContext& context) : context_(context), restApi_(NULL)
1433
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diff changeset
248 {
1437
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diff changeset
249 lua_.RegisterFunction("RestApiGet", RestApiGet);
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diff changeset
250
1433
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diff changeset
251 lua_.Execute(Orthanc::EmbeddedResources::LUA_TOOLBOX);
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diff changeset
252 lua_.SetHttpProxy(Configuration::GetGlobalStringParameter("HttpProxy", ""));
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diff changeset
253 }
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diff changeset
254
461e7554bff7 refactoring: LuaScripting
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diff changeset
255
1437
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diff changeset
256 void LuaScripting::SetOrthancRestApi(OrthancRestApi& restApi)
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diff changeset
257 {
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diff changeset
258 lua_.SetGlobalVariable("_RestApi", &restApi);
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diff changeset
259 }
02f5a3f5c0a0 access to the REST API from Lua
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diff changeset
260
02f5a3f5c0a0 access to the REST API from Lua
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diff changeset
261
02f5a3f5c0a0 access to the REST API from Lua
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diff changeset
262 void LuaScripting::ResetOrthancRestApi()
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diff changeset
263 {
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diff changeset
264 lua_.SetGlobalVariable("_RestApi", NULL);
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diff changeset
265 }
02f5a3f5c0a0 access to the REST API from Lua
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diff changeset
266
02f5a3f5c0a0 access to the REST API from Lua
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diff changeset
267
1433
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diff changeset
268 void LuaScripting::ApplyOnStoredInstance(const std::string& instanceId,
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diff changeset
269 const Json::Value& simplifiedTags,
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diff changeset
270 const Json::Value& metadata,
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271 const std::string& remoteAet,
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272 const std::string& calledAet)
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273 {
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274 static const char* NAME = "OnStoredInstance";
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275
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276 if (lua_.IsExistingFunction(NAME))
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277 {
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278 InitializeJob();
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279
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280 LuaFunctionCall call(lua_, NAME);
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281 call.PushString(instanceId);
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282 call.PushJson(simplifiedTags);
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283 call.PushJson(metadata);
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284 call.PushJson(remoteAet);
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285 call.PushJson(calledAet);
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286 call.Execute();
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287
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288 SubmitJob(std::string("Lua script: ") + NAME);
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289 }
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290 }
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291
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292
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293 void LuaScripting::SignalStoredInstance(const std::string& publicId,
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294 DicomInstanceToStore& instance,
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295 const Json::Value& simplifiedTags)
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296 {
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297 boost::mutex::scoped_lock lock(mutex_);
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298
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299 Json::Value metadata = Json::objectValue;
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300
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301 for (ServerIndex::MetadataMap::const_iterator
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302 it = instance.GetMetadata().begin();
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303 it != instance.GetMetadata().end(); ++it)
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304 {
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305 if (it->first.first == ResourceType_Instance)
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306 {
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307 metadata[EnumerationToString(it->first.second)] = it->second;
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308 }
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309 }
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310
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311 ApplyOnStoredInstance(publicId, simplifiedTags, metadata,
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312 instance.GetRemoteAet(), instance.GetCalledAet());
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313 }
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314
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315
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316
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317 void LuaScripting::OnStableResource(const ServerIndexChange& change)
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318 {
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319 const char* name;
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320
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321 switch (change.GetChangeType())
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322 {
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323 case ChangeType_StablePatient:
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324 name = "OnStablePatient";
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325 break;
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326
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327 case ChangeType_StableStudy:
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328 name = "OnStableStudy";
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329 break;
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330
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331 case ChangeType_StableSeries:
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332 name = "OnStableSeries";
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333 break;
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334
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335 default:
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336 throw OrthancException(ErrorCode_InternalError);
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337 }
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338
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339
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340 Json::Value tags;
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341 if (context_.GetIndex().LookupResource(tags, change.GetPublicId(), change.GetResourceType()))
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342 {
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343 boost::mutex::scoped_lock lock(mutex_);
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344
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345 if (lua_.IsExistingFunction(name))
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346 {
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347 InitializeJob();
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348
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349 LuaFunctionCall call(lua_, name);
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350 call.PushString(change.GetPublicId());
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351 call.PushJson(tags["MainDicomTags"]);
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352 call.Execute();
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353
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354 SubmitJob(std::string("Lua script: ") + name);
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355 }
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356 }
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357 }
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358
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359
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360
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361 void LuaScripting::SignalChange(const ServerIndexChange& change)
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362 {
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363 if (change.GetChangeType() == ChangeType_StablePatient ||
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364 change.GetChangeType() == ChangeType_StableStudy ||
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365 change.GetChangeType() == ChangeType_StableSeries)
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366 {
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367 OnStableResource(change);
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368 }
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369 }
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370
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371
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372 bool LuaScripting::FilterIncomingInstance(const Json::Value& simplified,
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373 const std::string& remoteAet)
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374 {
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375 static const char* NAME = "ReceivedInstanceFilter";
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376
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377 boost::mutex::scoped_lock lock(mutex_);
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378
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379 if (lua_.IsExistingFunction(NAME))
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380 {
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381 LuaFunctionCall call(lua_, NAME);
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382 call.PushJson(simplified);
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383 call.PushString(remoteAet);
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diff changeset
384
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385 if (!call.ExecutePredicate())
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diff changeset
386 {
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387 return false;
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388 }
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389 }
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diff changeset
390
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diff changeset
391 return true;
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diff changeset
392 }
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diff changeset
393 }