Mercurial > hg > orthanc-stone
annotate Framework/Oracle/WebAssemblyOracle.cpp @ 1242:b9b5d4378874 broker
working of WebAssemblyOracle
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 06 Jan 2020 18:08:05 +0100 |
| parents | b9f2a111c5b9 |
| children | 608983cc2512 |
| rev | line source |
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| 825 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017-2019 Osimis S.A., Belgium | |
| 6 * | |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "WebAssemblyOracle.h" | |
| 23 | |
| 24 #include "SleepOracleCommand.h" | |
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25 #include "OracleCommandExceptionMessage.h" |
| 825 | 26 |
| 27 #include <Core/OrthancException.h> | |
| 28 #include <Core/Toolbox.h> | |
| 29 | |
| 30 #include <emscripten.h> | |
| 31 #include <emscripten/html5.h> | |
| 32 #include <emscripten/fetch.h> | |
| 33 | |
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34 #if 0 |
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35 extern bool logbgo233; |
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36 extern bool logbgo115; |
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37 #endif |
| 825 | 38 |
| 39 namespace OrthancStone | |
| 40 { | |
| 41 class WebAssemblyOracle::TimeoutContext | |
| 42 { | |
| 43 private: | |
| 44 WebAssemblyOracle& oracle_; | |
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45 boost::weak_ptr<IObserver> receiver_; |
| 825 | 46 std::auto_ptr<SleepOracleCommand> command_; |
| 47 | |
| 48 public: | |
| 49 TimeoutContext(WebAssemblyOracle& oracle, | |
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50 boost::weak_ptr<IObserver> receiver, |
| 825 | 51 IOracleCommand* command) : |
| 52 oracle_(oracle), | |
| 53 receiver_(receiver) | |
| 54 { | |
| 55 if (command == NULL) | |
| 56 { | |
| 57 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 58 } | |
| 59 else | |
| 60 { | |
| 61 command_.reset(dynamic_cast<SleepOracleCommand*>(command)); | |
| 62 } | |
| 63 } | |
| 64 | |
| 65 void EmitMessage() | |
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66 { |
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67 assert(command_.get() != NULL); |
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68 |
| 825 | 69 SleepOracleCommand::TimeoutMessage message(*command_); |
| 70 oracle_.EmitMessage(receiver_, message); | |
| 71 } | |
| 72 | |
| 73 static void Callback(void *userData) | |
| 74 { | |
| 75 std::auto_ptr<TimeoutContext> context(reinterpret_cast<TimeoutContext*>(userData)); | |
| 76 context->EmitMessage(); | |
| 77 } | |
| 78 }; | |
| 79 | |
| 80 | |
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81 /** |
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82 This object is created on the heap for every http request. |
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83 It is deleted in the success (or error) callbacks. |
| 825 | 84 |
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85 This object references the receiver of the request. Since this is a raw |
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86 reference, we need additional checks to make sure we send the response to |
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87 the same object, for the object can be deleted and a new one recreated at the |
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88 same address (it often happens in the [single-threaded] browser context). |
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89 */ |
| 825 | 90 class WebAssemblyOracle::FetchContext : public boost::noncopyable |
| 91 { | |
| 92 private: | |
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93 WebAssemblyOracle& oracle_; |
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94 boost::weak_ptr<IObserver> receiver_; |
| 825 | 95 std::auto_ptr<IOracleCommand> command_; |
| 96 std::string expectedContentType_; | |
| 97 | |
| 98 public: | |
| 99 FetchContext(WebAssemblyOracle& oracle, | |
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100 boost::weak_ptr<IObserver> receiver, |
| 825 | 101 IOracleCommand* command, |
| 102 const std::string& expectedContentType) : | |
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103 oracle_(oracle), |
| 825 | 104 receiver_(receiver), |
| 105 command_(command), | |
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106 expectedContentType_(expectedContentType) |
| 825 | 107 { |
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108 LOG(TRACE) << "WebAssemblyOracle::FetchContext::FetchContext() | " |
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109 << "receiver address = " << std::hex << &receiver; |
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110 |
| 825 | 111 if (command == NULL) |
| 112 { | |
| 113 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 const std::string& GetExpectedContentType() const | |
| 118 { | |
| 119 return expectedContentType_; | |
| 120 } | |
| 121 | |
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122 IMessageEmitter& GetEmitter() const |
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123 { |
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124 return oracle_; |
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125 } |
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126 |
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127 boost::weak_ptr<IObserver> GetReceiver() const |
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128 { |
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129 return receiver_; |
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130 } |
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131 |
| 825 | 132 void EmitMessage(const IMessage& message) |
| 133 { | |
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134 LOG(TRACE) << "WebAssemblyOracle::FetchContext::EmitMessage receiver_ = " |
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135 << std::hex << &receiver_ << std::dec; |
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136 oracle_.EmitMessage(receiver_, message); |
| 825 | 137 } |
| 138 | |
| 139 IOracleCommand& GetCommand() const | |
| 140 { | |
| 141 return *command_; | |
| 142 } | |
| 143 | |
| 144 template <typename T> | |
| 145 const T& GetTypedCommand() const | |
| 146 { | |
| 147 return dynamic_cast<T&>(*command_); | |
| 148 } | |
| 149 | |
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150 #if 0 |
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151 static std::string ToString(Orthanc::HttpMethod method) |
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152 { |
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153 switch (method) { |
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154 case Orthanc::HttpMethod_Get: |
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155 return "GET"; |
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156 break; |
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157 case Orthanc::HttpMethod_Post: |
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158 return "POST"; |
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159 break; |
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160 default: |
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161 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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162 break; |
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163 } |
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164 } |
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165 static void DumpCommand(emscripten_fetch_t* fetch, std::string answer) |
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166 { |
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167 FetchContext* context = reinterpret_cast<FetchContext*>(fetch->userData); |
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168 |
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169 const auto& command = context->GetTypedCommand<OrthancRestApiCommand>(); |
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170 auto commandStr = ToString(command.GetMethod()); |
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171 LOG(TRACE) << "SuccessCallback for REST command. Method is : " << commandStr; |
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172 switch (command.GetMethod()) { |
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173 case Orthanc::HttpMethod_Get: |
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174 LOG(TRACE) << " * SuccessCallback GET URI = " << command.GetUri() << " timeout = " << command.GetTimeout(); |
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175 LOG(TRACE) << " * SuccessCallback GET RESPONSE = " << answer; |
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176 break; |
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177 case Orthanc::HttpMethod_Post: |
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178 LOG(TRACE) << " * SuccessCallback POST URI = " << command.GetUri() << " body = " << command.GetBody() << " timeout = " << command.GetTimeout(); |
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179 LOG(TRACE) << " * SuccessCallback POST RESPONSE = " << answer; |
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180 break; |
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181 default: |
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182 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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183 break; |
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184 } |
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185 } |
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186 #endif |
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187 |
| 825 | 188 static void SuccessCallback(emscripten_fetch_t *fetch) |
| 189 { | |
| 190 /** | |
| 191 * Firstly, make a local copy of the fetched information, and | |
| 192 * free data associated with the fetch. | |
| 193 **/ | |
| 194 | |
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195 if (fetch->userData == NULL) |
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196 { |
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197 LOG(ERROR) << "WebAssemblyOracle::FetchContext::SuccessCallback fetch->userData is NULL!!!!!!!"; |
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198 return; |
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199 } |
| 825 | 200 |
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201 std::auto_ptr<FetchContext> context(reinterpret_cast<FetchContext*>(fetch->userData)); |
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202 |
| 825 | 203 std::string answer; |
| 204 if (fetch->numBytes > 0) | |
| 205 { | |
| 206 answer.assign(fetch->data, fetch->numBytes); | |
| 207 } | |
| 208 | |
| 209 /** | |
| 210 * TODO - HACK - As of emscripten-1.38.31, the fetch API does | |
| 211 * not contain a way to retrieve the HTTP headers of the | |
| 212 * answer. We make the assumption that the "Content-Type" header | |
| 213 * of the response is the same as the "Accept" header of the | |
| 214 * query. This should be fixed in future versions of emscripten. | |
| 215 * https://github.com/emscripten-core/emscripten/pull/8486 | |
| 216 **/ | |
| 217 | |
| 218 HttpHeaders headers; | |
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219 if (fetch->userData != NULL) |
| 825 | 220 { |
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221 if (!context->GetExpectedContentType().empty()) |
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222 { |
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223 headers["Content-Type"] = context->GetExpectedContentType(); |
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224 } |
| 825 | 225 } |
| 226 | |
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227 #if 0 |
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228 if (context->GetCommand().GetType() == IOracleCommand::Type_OrthancRestApi) { |
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229 //if (logbgo115) |
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230 DumpCommand(fetch, answer); |
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231 } |
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232 #endif |
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233 LOG(TRACE) << "About to call emscripten_fetch_close"; |
| 825 | 234 emscripten_fetch_close(fetch); |
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235 LOG(TRACE) << "Successfully called emscripten_fetch_close"; |
| 825 | 236 |
| 237 /** | |
| 238 * Secondly, use the retrieved data. | |
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239 * IMPORTANT NOTE: the receiver might be dead. This is prevented |
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240 * by the object responsible for zombie check, later on. |
| 825 | 241 **/ |
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242 try |
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243 { |
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244 if (context.get() == NULL) |
| 825 | 245 { |
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246 LOG(ERROR) << "WebAssemblyOracle::FetchContext::SuccessCallback: (context.get() == NULL)"; |
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247 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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248 } |
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249 else |
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250 { |
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251 switch (context->GetCommand().GetType()) |
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252 { |
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253 case IOracleCommand::Type_Http: |
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254 { |
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255 HttpCommand::SuccessMessage message(context->GetTypedCommand<HttpCommand>(), headers, answer); |
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256 context->EmitMessage(message); |
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257 break; |
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258 } |
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259 |
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260 case IOracleCommand::Type_OrthancRestApi: |
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261 { |
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262 LOG(TRACE) << "WebAssemblyOracle::FetchContext::SuccessCallback. About to call context->EmitMessage(message);"; |
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263 OrthancRestApiCommand::SuccessMessage message |
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264 (context->GetTypedCommand<OrthancRestApiCommand>(), headers, answer); |
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265 context->EmitMessage(message); |
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266 break; |
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267 } |
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268 |
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269 case IOracleCommand::Type_GetOrthancImage: |
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270 { |
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271 context->GetTypedCommand<GetOrthancImageCommand>().ProcessHttpAnswer |
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272 (context->GetReceiver(), context->GetEmitter(), answer, headers); |
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273 break; |
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274 } |
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275 |
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276 case IOracleCommand::Type_GetOrthancWebViewerJpeg: |
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277 { |
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278 context->GetTypedCommand<GetOrthancWebViewerJpegCommand>().ProcessHttpAnswer |
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279 (context->GetReceiver(), context->GetEmitter(), answer); |
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280 break; |
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281 } |
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282 |
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283 default: |
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284 LOG(ERROR) << "Command type not implemented by the WebAssembly Oracle: " |
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285 << context->GetCommand().GetType(); |
| 825 | 286 } |
| 287 } | |
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288 } |
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289 catch (Orthanc::OrthancException& e) |
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290 { |
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291 LOG(ERROR) << "Error while processing a fetch answer in the oracle: " << e.What(); |
| 825 | 292 } |
| 293 } | |
| 294 | |
| 295 static void FailureCallback(emscripten_fetch_t *fetch) | |
| 296 { | |
| 297 std::auto_ptr<FetchContext> context(reinterpret_cast<FetchContext*>(fetch->userData)); | |
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298 |
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299 { |
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300 const size_t kEmscriptenStatusTextSize = sizeof(emscripten_fetch_t::statusText); |
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301 char message[kEmscriptenStatusTextSize + 1]; |
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302 memcpy(message, fetch->statusText, kEmscriptenStatusTextSize); |
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303 message[kEmscriptenStatusTextSize] = 0; |
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304 |
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305 /*LOG(ERROR) << "Fetching " << fetch->url |
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306 << " failed, HTTP failure status code: " << fetch->status |
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307 << " | statusText = " << message |
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308 << " | numBytes = " << fetch->numBytes |
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309 << " | totalBytes = " << fetch->totalBytes |
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310 << " | readyState = " << fetch->readyState;*/ |
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311 } |
| 825 | 312 |
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313 { |
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314 OracleCommandExceptionMessage message |
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315 (context->GetCommand(), Orthanc::OrthancException(Orthanc::ErrorCode_NetworkProtocol)); |
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316 context->EmitMessage(message); |
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317 } |
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318 |
| 825 | 319 /** |
| 320 * TODO - The following code leads to an infinite recursion, at | |
| 321 * least with Firefox running on incognito mode => WHY? | |
| 322 **/ | |
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323 emscripten_fetch_close(fetch); // Also free data on failure. |
| 825 | 324 } |
| 325 }; | |
| 326 | |
| 327 | |
| 328 | |
| 329 class WebAssemblyOracle::FetchCommand : public boost::noncopyable | |
| 330 { | |
| 331 private: | |
| 332 WebAssemblyOracle& oracle_; | |
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333 boost::weak_ptr<IObserver> receiver_; |
| 825 | 334 std::auto_ptr<IOracleCommand> command_; |
| 335 Orthanc::HttpMethod method_; | |
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336 std::string url_; |
| 825 | 337 std::string body_; |
| 338 HttpHeaders headers_; | |
| 339 unsigned int timeout_; | |
| 340 std::string expectedContentType_; | |
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341 bool hasCredentials_; |
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342 std::string username_; |
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343 std::string password_; |
| 825 | 344 |
| 345 public: | |
| 346 FetchCommand(WebAssemblyOracle& oracle, | |
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347 boost::weak_ptr<IObserver> receiver, |
| 825 | 348 IOracleCommand* command) : |
| 349 oracle_(oracle), | |
| 350 receiver_(receiver), | |
| 351 command_(command), | |
| 352 method_(Orthanc::HttpMethod_Get), | |
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353 timeout_(0), |
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354 hasCredentials_(false) |
| 825 | 355 { |
| 356 if (command == NULL) | |
| 357 { | |
| 358 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 359 } | |
| 360 } | |
| 361 | |
| 362 void SetMethod(Orthanc::HttpMethod method) | |
| 363 { | |
| 364 method_ = method; | |
| 365 } | |
| 366 | |
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367 void SetUrl(const std::string& url) |
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368 { |
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369 url_ = url; |
| 825 | 370 } |
| 371 | |
| 372 void SetBody(std::string& body /* will be swapped */) | |
| 373 { | |
| 374 body_.swap(body); | |
| 375 } | |
| 376 | |
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377 void AddHttpHeaders(const HttpHeaders& headers) |
| 825 | 378 { |
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379 for (HttpHeaders::const_iterator it = headers.begin(); it != headers.end(); ++it) |
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380 { |
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381 headers_[it->first] = it->second; |
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382 } |
| 825 | 383 } |
| 384 | |
| 385 void SetTimeout(unsigned int timeout) | |
| 386 { | |
| 387 timeout_ = timeout; | |
| 388 } | |
| 389 | |
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390 void SetCredentials(const std::string& username, |
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391 const std::string& password) |
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392 { |
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393 hasCredentials_ = true; |
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394 username_ = username; |
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395 password_ = password; |
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396 } |
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397 |
| 825 | 398 void Execute() |
| 399 { | |
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400 #if 0 |
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401 if (logbgo233) { |
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402 if (logbgo115) |
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403 LOG(TRACE) << " WebAssemblyOracle::Execute () command addr " << |
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404 std::hex << command_.get() << std::dec; |
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405 } |
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406 #endif |
| 825 | 407 if (command_.get() == NULL) |
| 408 { | |
| 409 // Cannot call Execute() twice | |
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410 LOG(ERROR) << "WebAssemblyOracle::Execute(): (command_.get() == NULL)"; |
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411 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 825 | 412 } |
| 413 | |
| 414 emscripten_fetch_attr_t attr; | |
| 415 emscripten_fetch_attr_init(&attr); | |
| 416 | |
| 417 const char* method; | |
| 418 | |
| 419 switch (method_) | |
| 420 { | |
| 421 case Orthanc::HttpMethod_Get: | |
| 422 method = "GET"; | |
| 423 break; | |
| 424 | |
| 425 case Orthanc::HttpMethod_Post: | |
| 426 method = "POST"; | |
| 427 break; | |
| 428 | |
| 429 case Orthanc::HttpMethod_Delete: | |
| 430 method = "DELETE"; | |
| 431 break; | |
| 432 | |
| 433 case Orthanc::HttpMethod_Put: | |
| 434 method = "PUT"; | |
| 435 break; | |
| 436 | |
| 437 default: | |
| 438 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 439 } | |
| 440 | |
| 441 strcpy(attr.requestMethod, method); | |
| 442 | |
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443 attr.attributes = EMSCRIPTEN_FETCH_LOAD_TO_MEMORY | EMSCRIPTEN_FETCH_REPLACE; |
| 825 | 444 attr.onsuccess = FetchContext::SuccessCallback; |
| 445 attr.onerror = FetchContext::FailureCallback; | |
| 446 attr.timeoutMSecs = timeout_ * 1000; | |
| 447 | |
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448 if (hasCredentials_) |
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449 { |
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450 attr.withCredentials = EM_TRUE; |
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451 attr.userName = username_.c_str(); |
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452 attr.password = password_.c_str(); |
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453 } |
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454 |
| 825 | 455 std::vector<const char*> headers; |
| 456 headers.reserve(2 * headers_.size() + 1); | |
| 457 | |
| 458 std::string expectedContentType; | |
| 459 | |
| 460 for (HttpHeaders::const_iterator it = headers_.begin(); it != headers_.end(); ++it) | |
| 461 { | |
| 462 std::string key; | |
| 463 Orthanc::Toolbox::ToLowerCase(key, it->first); | |
| 464 | |
| 465 if (key == "accept") | |
| 466 { | |
| 467 expectedContentType = it->second; | |
| 468 } | |
| 469 | |
| 470 if (key != "accept-encoding") // Web browsers forbid the modification of this HTTP header | |
| 471 { | |
| 472 headers.push_back(it->first.c_str()); | |
| 473 headers.push_back(it->second.c_str()); | |
| 474 } | |
| 475 } | |
| 476 | |
| 477 headers.push_back(NULL); // Termination of the array of HTTP headers | |
| 478 | |
| 479 attr.requestHeaders = &headers[0]; | |
| 480 | |
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481 char* requestData = NULL; |
| 825 | 482 if (!body_.empty()) |
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483 requestData = reinterpret_cast<char*>(malloc(body_.size())); |
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484 |
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485 try |
| 825 | 486 { |
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487 if (!body_.empty()) |
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488 { |
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489 memcpy(requestData, &(body_[0]), body_.size()); |
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490 attr.requestDataSize = body_.size(); |
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491 attr.requestData = requestData; |
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492 } |
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493 attr.userData = new FetchContext(oracle_, receiver_, command_.release(), expectedContentType); |
| 825 | 494 |
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495 // Must be the last call to prevent memory leak on error |
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496 #if 0 |
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497 LOG(TRACE) << "Performing " << method << " request on URI: \"" << url_ << "\""; |
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498 #endif |
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499 emscripten_fetch(&attr, url_.c_str()); |
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500 } |
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501 catch(...) |
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502 { |
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503 if(requestData != NULL) |
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504 free(requestData); |
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505 throw; |
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506 } |
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507 } |
| 825 | 508 }; |
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509 |
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510 #if 0 |
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511 static void DumpCommand(OrthancRestApiCommand* pCommand) |
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512 { |
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513 OrthancRestApiCommand& command = *pCommand; |
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514 LOG(TRACE) << "WebAssemblyOracle::Execute for REST command."; |
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515 switch (command.GetMethod()) { |
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516 case Orthanc::HttpMethod_Get: |
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517 LOG(TRACE) << " * WebAssemblyOracle::Execute GET URI = " << command.GetUri() << " timeout = " << command.GetTimeout(); |
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518 break; |
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519 case Orthanc::HttpMethod_Post: |
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520 LOG(TRACE) << " * WebAssemblyOracle::Execute POST URI = " << command.GetUri() << " body = " << command.GetBody() << " timeout = " << command.GetTimeout(); |
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521 break; |
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522 default: |
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523 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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524 break; |
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525 } |
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526 } |
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527 #endif |
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528 |
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529 |
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530 void WebAssemblyOracle::SetOrthancUrl(FetchCommand& command, |
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531 const std::string& uri) const |
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532 { |
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533 if (isLocalOrthanc_) |
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534 { |
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535 command.SetUrl(localOrthancRoot_ + uri); |
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536 } |
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537 else |
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538 { |
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539 command.SetUrl(remoteOrthanc_.GetUrl() + uri); |
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540 command.AddHttpHeaders(remoteOrthanc_.GetHttpHeaders()); |
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541 |
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542 if (!remoteOrthanc_.GetUsername().empty()) |
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543 { |
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544 command.SetCredentials(remoteOrthanc_.GetUsername(), remoteOrthanc_.GetPassword()); |
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545 } |
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546 } |
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547 } |
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548 |
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549 |
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550 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
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551 HttpCommand* command) |
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552 { |
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553 FetchCommand fetch(*this, receiver, command); |
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554 |
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555 fetch.SetMethod(command->GetMethod()); |
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556 fetch.SetUrl(command->GetUrl()); |
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557 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
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558 fetch.SetTimeout(command->GetTimeout()); |
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559 |
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560 if (command->GetMethod() == Orthanc::HttpMethod_Post || |
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561 command->GetMethod() == Orthanc::HttpMethod_Put) |
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562 { |
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563 std::string body; |
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564 command->SwapBody(body); |
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565 fetch.SetBody(body); |
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566 } |
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567 |
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568 fetch.Execute(); |
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569 } |
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570 |
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571 |
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572 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
| 825 | 573 OrthancRestApiCommand* command) |
| 574 { | |
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575 #if 0 |
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576 DumpCommand(command); |
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577 |
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578 if (logbgo233) { |
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579 if (logbgo115) |
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580 LOG(TRACE) << " WebAssemblyOracle::Execute (OrthancRestApiCommand) command addr " << |
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581 std::hex << command << std::dec; |
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582 } |
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583 #endif |
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584 |
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585 try |
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586 { |
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587 //LOG(TRACE) << "*********** WebAssemblyOracle::Execute."; |
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588 //LOG(TRACE) << "WebAssemblyOracle::Execute | command = " << command; |
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589 FetchCommand fetch(*this, receiver, command); |
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590 |
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591 fetch.SetMethod(command->GetMethod()); |
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592 SetOrthancUrl(fetch, command->GetUri()); |
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593 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
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594 fetch.SetTimeout(command->GetTimeout()); |
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595 |
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596 if (command->GetMethod() == Orthanc::HttpMethod_Post || |
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597 command->GetMethod() == Orthanc::HttpMethod_Put) |
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598 { |
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599 std::string body; |
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600 command->SwapBody(body); |
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601 fetch.SetBody(body); |
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602 } |
| 825 | 603 |
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604 fetch.Execute(); |
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605 //LOG(TRACE) << "*********** successful end of WebAssemblyOracle::Execute."; |
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606 } |
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607 catch (const Orthanc::OrthancException& e) |
| 825 | 608 { |
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609 if (e.HasDetails()) |
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610 { |
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611 LOG(ERROR) << "OrthancException in WebAssemblyOracle::Execute: " << e.What() << " Details: " << e.GetDetails(); |
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612 } |
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613 else |
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614 { |
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615 LOG(ERROR) << "OrthancException in WebAssemblyOracle::Execute: " << e.What(); |
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616 } |
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617 //LOG(TRACE) << "*********** failing end of WebAssemblyOracle::Execute."; |
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618 throw; |
| 825 | 619 } |
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620 catch (const std::exception& e) |
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621 { |
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622 LOG(ERROR) << "std::exception in WebAssemblyOracle::Execute: " << e.what(); |
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623 // LOG(TRACE) << "*********** failing end of WebAssemblyOracle::Execute."; |
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624 throw; |
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625 } |
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626 catch (...) |
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627 { |
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628 LOG(ERROR) << "Unknown exception in WebAssemblyOracle::Execute"; |
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629 // LOG(TRACE) << "*********** failing end of WebAssemblyOracle::Execute."; |
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630 throw; |
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631 } |
| 825 | 632 } |
| 633 | |
| 634 | |
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635 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
| 825 | 636 GetOrthancImageCommand* command) |
| 637 { | |
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638 #if 0 |
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639 if (logbgo233) { |
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640 if (logbgo115) |
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641 LOG(TRACE) << " WebAssemblyOracle::Execute (GetOrthancImageCommand) command addr " << |
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642 std::hex << command << std::dec; |
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643 } |
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644 #endif |
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645 |
| 825 | 646 FetchCommand fetch(*this, receiver, command); |
| 647 | |
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648 SetOrthancUrl(fetch, command->GetUri()); |
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649 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
| 825 | 650 fetch.SetTimeout(command->GetTimeout()); |
| 651 | |
| 652 fetch.Execute(); | |
| 653 } | |
| 654 | |
| 655 | |
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656 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
| 825 | 657 GetOrthancWebViewerJpegCommand* command) |
| 658 { | |
|
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659 #if 0 |
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660 if (logbgo233) { |
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661 if (logbgo115) |
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662 LOG(TRACE) << " WebAssemblyOracle::Execute (GetOrthancWebViewerJpegCommand) command addr " << std::hex << command << std::dec; |
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663 } |
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664 #endif |
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665 |
| 825 | 666 FetchCommand fetch(*this, receiver, command); |
| 667 | |
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668 SetOrthancUrl(fetch, command->GetUri()); |
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669 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
| 825 | 670 fetch.SetTimeout(command->GetTimeout()); |
| 671 | |
| 672 fetch.Execute(); | |
| 673 } | |
| 674 | |
| 675 | |
| 676 | |
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677 bool WebAssemblyOracle::Schedule(boost::shared_ptr<IObserver> receiver, |
| 825 | 678 IOracleCommand* command) |
| 679 { | |
|
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680 LOG(TRACE) << "WebAssemblyOracle::Schedule : receiver = " |
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681 << std::hex << &receiver; |
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682 |
| 825 | 683 std::auto_ptr<IOracleCommand> protection(command); |
| 684 | |
| 685 if (command == NULL) | |
| 686 { | |
| 687 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 688 } | |
| 689 | |
| 690 switch (command->GetType()) | |
| 691 { | |
|
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692 case IOracleCommand::Type_Http: |
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693 Execute(receiver, dynamic_cast<HttpCommand*>(protection.release())); |
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694 break; |
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695 |
| 825 | 696 case IOracleCommand::Type_OrthancRestApi: |
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697 //// DIAGNOSTIC. PLEASE REMOVE IF IT HAS BEEN COMMITTED BY MISTAKE |
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698 //{ |
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699 // const IObserver* pReceiver = &receiver; |
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700 // LOG(TRACE) << "WebAssemblyOracle::Schedule | pReceiver is " << pReceiver; |
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701 // LOG(TRACE) << "WebAssemblyOracle::Schedule | command = " << command; |
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702 // OrthancRestApiCommand* rac = dynamic_cast<OrthancRestApiCommand*>(protection.get()); |
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703 // LOG(TRACE) << "WebAssemblyOracle::Schedule | typed command = " << rac; |
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704 // LOG(TRACE) << "WebAssemblyOracle::Schedule" << rac->GetUri(); |
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705 //} |
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706 //// END OF BLOCK TO REMOVE |
| 825 | 707 Execute(receiver, dynamic_cast<OrthancRestApiCommand*>(protection.release())); |
| 708 break; | |
| 709 | |
| 710 case IOracleCommand::Type_GetOrthancImage: | |
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711 //// DIAGNOSTIC. PLEASE REMOVE IF IT HAS BEEN COMMITTED BY MISTAKE |
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712 //{ |
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713 // GetOrthancImageCommand* rac = dynamic_cast<GetOrthancImageCommand*>(protection.get()); |
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714 // LOG(TRACE) << "WebAssemblyOracle::Schedule" << rac->GetUri(); |
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715 //} |
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716 //// END OF BLOCK TO REMOVE |
| 825 | 717 Execute(receiver, dynamic_cast<GetOrthancImageCommand*>(protection.release())); |
| 718 break; | |
| 719 | |
| 720 case IOracleCommand::Type_GetOrthancWebViewerJpeg: | |
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721 //// DIAGNOSTIC. PLEASE REMOVE IF IT HAS BEEN COMMITTED BY MISTAKE |
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722 //{ |
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723 // GetOrthancWebViewerJpegCommand* rac = dynamic_cast<GetOrthancWebViewerJpegCommand*>(protection.get()); |
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724 // LOG(TRACE) << "WebAssemblyOracle::Schedule" << rac->GetUri(); |
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725 //} |
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726 //// END OF BLOCK TO REMOVE |
| 825 | 727 Execute(receiver, dynamic_cast<GetOrthancWebViewerJpegCommand*>(protection.release())); |
| 728 break; | |
| 729 | |
| 730 case IOracleCommand::Type_Sleep: | |
| 731 { | |
| 732 unsigned int timeoutMS = dynamic_cast<SleepOracleCommand*>(command)->GetDelay(); | |
| 733 emscripten_set_timeout(TimeoutContext::Callback, timeoutMS, | |
| 734 new TimeoutContext(*this, receiver, protection.release())); | |
| 735 break; | |
| 736 } | |
| 737 | |
| 738 default: | |
| 739 LOG(ERROR) << "Command type not implemented by the WebAssembly Oracle: " << command->GetType(); | |
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740 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
| 825 | 741 } |
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742 |
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743 return true; |
| 825 | 744 } |
| 745 } |