Mercurial > hg > orthanc-stone
annotate Framework/Oracle/WebAssemblyOracle.cpp @ 1368:33da5d02885f broker
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| author | Benjamin Golinvaux <bgo@osimis.io> |
|---|---|
| date | Sat, 18 Apr 2020 14:45:22 +0200 |
| parents | 257f2c9a02ac |
| children | 30deba7bc8e2 |
| 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 | |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 825 | 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 | |
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24 #include "OracleCommandExceptionMessage.h" |
| 825 | 25 #include "SleepOracleCommand.h" |
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26 |
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27 #if ORTHANC_ENABLE_DCMTK == 1 |
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28 # include "ParseDicomSuccessMessage.h" |
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29 static unsigned int BUCKET_SOP = 1; |
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30 #endif |
| 825 | 31 |
| 32 #include <Core/OrthancException.h> | |
| 33 #include <Core/Toolbox.h> | |
| 34 | |
| 35 #include <emscripten.h> | |
| 36 #include <emscripten/html5.h> | |
| 37 #include <emscripten/fetch.h> | |
| 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_; |
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46 std::unique_ptr<SleepOracleCommand> command_; |
| 825 | 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 { | |
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75 std::unique_ptr<TimeoutContext> context(reinterpret_cast<TimeoutContext*>(userData)); |
| 825 | 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_; |
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95 std::unique_ptr<IOracleCommand> command_; |
| 825 | 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 ORTHANC_ENABLE_DCMTK == 1 |
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151 void StoreInCache(const std::string& sopInstanceUid, |
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152 std::unique_ptr<Orthanc::ParsedDicomFile>& dicom, |
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153 size_t fileSize) |
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154 { |
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155 if (oracle_.dicomCache_.get()) |
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156 { |
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157 // Store it into the cache for future use |
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158 oracle_.dicomCache_->Acquire(BUCKET_SOP, sopInstanceUid, |
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159 dicom.release(), fileSize, true); |
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160 } |
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161 } |
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162 #endif |
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163 |
| 825 | 164 static void SuccessCallback(emscripten_fetch_t *fetch) |
| 165 { | |
| 166 /** | |
| 167 * Firstly, make a local copy of the fetched information, and | |
| 168 * free data associated with the fetch. | |
| 169 **/ | |
| 170 | |
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171 if (fetch->userData == NULL) |
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172 { |
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173 LOG(ERROR) << "WebAssemblyOracle::FetchContext::SuccessCallback fetch->userData is NULL!!!!!!!"; |
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174 return; |
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175 } |
| 825 | 176 |
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177 std::unique_ptr<FetchContext> context(reinterpret_cast<FetchContext*>(fetch->userData)); |
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178 |
| 825 | 179 std::string answer; |
| 180 if (fetch->numBytes > 0) | |
| 181 { | |
| 182 answer.assign(fetch->data, fetch->numBytes); | |
| 183 } | |
| 184 | |
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185 |
| 825 | 186 /** |
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187 * Retrieving the headers of the HTTP answer. |
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188 **/ |
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189 HttpHeaders headers; |
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190 |
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191 #if (__EMSCRIPTEN_major__ < 1 || \ |
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192 (__EMSCRIPTEN_major__ == 1 && __EMSCRIPTEN_minor__ < 38) || \ |
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193 (__EMSCRIPTEN_major__ == 1 && __EMSCRIPTEN_minor__ == 38 && __EMSCRIPTEN_tiny__ < 37)) |
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194 # warning Consider upgrading Emscripten to a version above 1.38.37, incomplete support of Fetch API |
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195 |
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196 /** |
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197 * HACK - If emscripten < 1.38.37, the fetch API does not |
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198 * contain a way to retrieve the HTTP headers of the answer. We |
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199 * make the assumption that the "Content-Type" header of the |
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200 * response is the same as the "Accept" header of the |
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201 * query. This is fixed thanks to the |
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202 * "emscripten_fetch_get_response_headers()" function that was |
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203 * added to "fetch.h" at emscripten-1.38.37 on 2019-06-26. |
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204 * |
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205 * https://github.com/emscripten-core/emscripten/blob/1.38.37/system/include/emscripten/fetch.h |
| 825 | 206 * https://github.com/emscripten-core/emscripten/pull/8486 |
| 207 **/ | |
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208 if (fetch->userData != NULL) |
| 825 | 209 { |
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210 if (!context->GetExpectedContentType().empty()) |
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211 { |
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212 headers["Content-Type"] = context->GetExpectedContentType(); |
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213 } |
| 825 | 214 } |
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215 #else |
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216 { |
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217 size_t size = emscripten_fetch_get_response_headers_length(fetch); |
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218 |
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219 std::string plainHeaders(size + 1, '\0'); |
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220 emscripten_fetch_get_response_headers(fetch, &plainHeaders[0], size + 1); |
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221 |
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222 std::vector<std::string> tokens; |
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223 Orthanc::Toolbox::TokenizeString(tokens, plainHeaders, '\n'); |
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224 |
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225 for (size_t i = 0; i < tokens.size(); i++) |
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226 { |
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227 size_t p = tokens[i].find(':'); |
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228 if (p != std::string::npos) |
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229 { |
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230 std::string key = Orthanc::Toolbox::StripSpaces(tokens[i].substr(0, p)); |
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231 std::string value = Orthanc::Toolbox::StripSpaces(tokens[i].substr(p + 1)); |
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232 headers[key] = value; |
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233 } |
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234 } |
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235 } |
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236 #endif |
| 825 | 237 |
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238 LOG(TRACE) << "About to call emscripten_fetch_close"; |
| 825 | 239 emscripten_fetch_close(fetch); |
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240 LOG(TRACE) << "Successfully called emscripten_fetch_close"; |
| 825 | 241 |
| 242 /** | |
| 243 * Secondly, use the retrieved data. | |
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244 * IMPORTANT NOTE: the receiver might be dead. This is prevented |
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245 * by the object responsible for zombie check, later on. |
| 825 | 246 **/ |
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247 try |
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248 { |
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249 if (context.get() == NULL) |
| 825 | 250 { |
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251 LOG(ERROR) << "WebAssemblyOracle::FetchContext::SuccessCallback: (context.get() == NULL)"; |
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252 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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253 } |
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254 else |
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255 { |
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256 switch (context->GetCommand().GetType()) |
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257 { |
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258 case IOracleCommand::Type_Http: |
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259 { |
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260 HttpCommand::SuccessMessage message(context->GetTypedCommand<HttpCommand>(), headers, answer); |
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261 context->EmitMessage(message); |
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262 break; |
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263 } |
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264 |
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265 case IOracleCommand::Type_OrthancRestApi: |
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266 { |
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267 LOG(TRACE) << "WebAssemblyOracle::FetchContext::SuccessCallback. About to call context->EmitMessage(message);"; |
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268 OrthancRestApiCommand::SuccessMessage message |
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269 (context->GetTypedCommand<OrthancRestApiCommand>(), headers, answer); |
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270 context->EmitMessage(message); |
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271 break; |
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272 } |
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273 |
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274 case IOracleCommand::Type_GetOrthancImage: |
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275 { |
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276 context->GetTypedCommand<GetOrthancImageCommand>().ProcessHttpAnswer |
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277 (context->GetReceiver(), context->GetEmitter(), answer, headers); |
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278 break; |
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279 } |
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280 |
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281 case IOracleCommand::Type_GetOrthancWebViewerJpeg: |
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282 { |
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283 context->GetTypedCommand<GetOrthancWebViewerJpegCommand>().ProcessHttpAnswer |
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284 (context->GetReceiver(), context->GetEmitter(), answer); |
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285 break; |
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286 } |
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287 |
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288 case IOracleCommand::Type_ParseDicomFromWado: |
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289 { |
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290 #if ORTHANC_ENABLE_DCMTK == 1 |
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291 const ParseDicomFromWadoCommand& command = |
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292 context->GetTypedCommand<ParseDicomFromWadoCommand>(); |
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293 |
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294 size_t fileSize; |
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295 std::unique_ptr<Orthanc::ParsedDicomFile> dicom |
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296 (ParseDicomSuccessMessage::ParseWadoAnswer(fileSize, answer, headers)); |
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297 |
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298 { |
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299 ParseDicomSuccessMessage message(command, *dicom, fileSize, true); |
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300 context->EmitMessage(message); |
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301 } |
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302 |
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303 context->StoreInCache(command.GetSopInstanceUid(), dicom, fileSize); |
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304 #else |
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305 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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306 #endif |
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307 break; |
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308 } |
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309 |
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310 default: |
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311 LOG(ERROR) << "Command type not implemented by the WebAssembly Oracle (in SuccessCallback): " |
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312 << context->GetCommand().GetType(); |
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313 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
| 825 | 314 } |
| 315 } | |
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316 } |
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317 catch (Orthanc::OrthancException& e) |
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318 { |
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319 LOG(INFO) << "Error while processing a fetch answer in the oracle: " << e.What(); |
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320 |
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321 { |
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322 OracleCommandExceptionMessage message(context->GetCommand(), e); |
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323 context->EmitMessage(message); |
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324 } |
| 825 | 325 } |
| 326 } | |
| 327 | |
| 328 static void FailureCallback(emscripten_fetch_t *fetch) | |
| 329 { | |
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330 std::unique_ptr<FetchContext> context(reinterpret_cast<FetchContext*>(fetch->userData)); |
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331 |
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332 { |
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333 const size_t kEmscriptenStatusTextSize = sizeof(emscripten_fetch_t::statusText); |
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334 char message[kEmscriptenStatusTextSize + 1]; |
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335 memcpy(message, fetch->statusText, kEmscriptenStatusTextSize); |
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336 message[kEmscriptenStatusTextSize] = 0; |
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337 |
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338 /*LOG(ERROR) << "Fetching " << fetch->url |
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339 << " failed, HTTP failure status code: " << fetch->status |
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340 << " | statusText = " << message |
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341 << " | numBytes = " << fetch->numBytes |
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342 << " | totalBytes = " << fetch->totalBytes |
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343 << " | readyState = " << fetch->readyState;*/ |
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344 } |
| 825 | 345 |
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346 { |
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347 OracleCommandExceptionMessage message |
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348 (context->GetCommand(), Orthanc::OrthancException(Orthanc::ErrorCode_NetworkProtocol)); |
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349 context->EmitMessage(message); |
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350 } |
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351 |
| 825 | 352 /** |
| 353 * TODO - The following code leads to an infinite recursion, at | |
| 354 * least with Firefox running on incognito mode => WHY? | |
| 355 **/ | |
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356 emscripten_fetch_close(fetch); // Also free data on failure. |
| 825 | 357 } |
| 358 }; | |
| 359 | |
| 360 | |
| 361 | |
| 362 class WebAssemblyOracle::FetchCommand : public boost::noncopyable | |
| 363 { | |
| 364 private: | |
| 365 WebAssemblyOracle& oracle_; | |
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366 boost::weak_ptr<IObserver> receiver_; |
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367 std::unique_ptr<IOracleCommand> command_; |
| 825 | 368 Orthanc::HttpMethod method_; |
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369 std::string url_; |
| 825 | 370 std::string body_; |
| 371 HttpHeaders headers_; | |
| 372 unsigned int timeout_; | |
| 373 std::string expectedContentType_; | |
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374 bool hasCredentials_; |
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375 std::string username_; |
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376 std::string password_; |
| 825 | 377 |
| 378 public: | |
| 379 FetchCommand(WebAssemblyOracle& oracle, | |
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380 boost::weak_ptr<IObserver> receiver, |
| 825 | 381 IOracleCommand* command) : |
| 382 oracle_(oracle), | |
| 383 receiver_(receiver), | |
| 384 command_(command), | |
| 385 method_(Orthanc::HttpMethod_Get), | |
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386 timeout_(0), |
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387 hasCredentials_(false) |
| 825 | 388 { |
| 389 if (command == NULL) | |
| 390 { | |
| 391 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 392 } | |
| 393 } | |
| 394 | |
| 395 void SetMethod(Orthanc::HttpMethod method) | |
| 396 { | |
| 397 method_ = method; | |
| 398 } | |
| 399 | |
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400 void SetUrl(const std::string& url) |
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401 { |
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402 url_ = url; |
| 825 | 403 } |
| 404 | |
| 405 void SetBody(std::string& body /* will be swapped */) | |
| 406 { | |
| 407 body_.swap(body); | |
| 408 } | |
| 409 | |
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410 void AddHttpHeaders(const HttpHeaders& headers) |
| 825 | 411 { |
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412 for (HttpHeaders::const_iterator it = headers.begin(); it != headers.end(); ++it) |
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413 { |
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414 headers_[it->first] = it->second; |
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415 } |
| 825 | 416 } |
| 417 | |
| 418 void SetTimeout(unsigned int timeout) | |
| 419 { | |
| 420 timeout_ = timeout; | |
| 421 } | |
| 422 | |
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423 void SetCredentials(const std::string& username, |
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424 const std::string& password) |
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425 { |
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426 hasCredentials_ = true; |
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427 username_ = username; |
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428 password_ = password; |
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429 } |
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430 |
| 825 | 431 void Execute() |
| 432 { | |
| 433 if (command_.get() == NULL) | |
| 434 { | |
| 435 // Cannot call Execute() twice | |
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436 LOG(ERROR) << "WebAssemblyOracle::Execute(): (command_.get() == NULL)"; |
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437 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 825 | 438 } |
| 439 | |
| 440 emscripten_fetch_attr_t attr; | |
| 441 emscripten_fetch_attr_init(&attr); | |
| 442 | |
| 443 const char* method; | |
| 444 | |
| 445 switch (method_) | |
| 446 { | |
| 447 case Orthanc::HttpMethod_Get: | |
| 448 method = "GET"; | |
| 449 break; | |
| 450 | |
| 451 case Orthanc::HttpMethod_Post: | |
| 452 method = "POST"; | |
| 453 break; | |
| 454 | |
| 455 case Orthanc::HttpMethod_Delete: | |
| 456 method = "DELETE"; | |
| 457 break; | |
| 458 | |
| 459 case Orthanc::HttpMethod_Put: | |
| 460 method = "PUT"; | |
| 461 break; | |
| 462 | |
| 463 default: | |
| 464 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 465 } | |
| 466 | |
| 467 strcpy(attr.requestMethod, method); | |
| 468 | |
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469 attr.attributes = EMSCRIPTEN_FETCH_LOAD_TO_MEMORY | EMSCRIPTEN_FETCH_REPLACE; |
| 825 | 470 attr.onsuccess = FetchContext::SuccessCallback; |
| 471 attr.onerror = FetchContext::FailureCallback; | |
| 472 attr.timeoutMSecs = timeout_ * 1000; | |
| 473 | |
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474 if (hasCredentials_) |
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475 { |
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476 attr.withCredentials = EM_TRUE; |
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477 attr.userName = username_.c_str(); |
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478 attr.password = password_.c_str(); |
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479 } |
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480 |
| 825 | 481 std::vector<const char*> headers; |
| 482 headers.reserve(2 * headers_.size() + 1); | |
| 483 | |
| 484 std::string expectedContentType; | |
| 485 | |
| 486 for (HttpHeaders::const_iterator it = headers_.begin(); it != headers_.end(); ++it) | |
| 487 { | |
| 488 std::string key; | |
| 489 Orthanc::Toolbox::ToLowerCase(key, it->first); | |
| 490 | |
| 491 if (key == "accept") | |
| 492 { | |
| 493 expectedContentType = it->second; | |
| 494 } | |
| 495 | |
| 496 if (key != "accept-encoding") // Web browsers forbid the modification of this HTTP header | |
| 497 { | |
| 498 headers.push_back(it->first.c_str()); | |
| 499 headers.push_back(it->second.c_str()); | |
| 500 } | |
| 501 } | |
| 502 | |
| 503 headers.push_back(NULL); // Termination of the array of HTTP headers | |
| 504 | |
| 505 attr.requestHeaders = &headers[0]; | |
| 506 | |
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507 char* requestData = NULL; |
| 825 | 508 if (!body_.empty()) |
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509 requestData = reinterpret_cast<char*>(malloc(body_.size())); |
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510 |
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511 try |
| 825 | 512 { |
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513 if (!body_.empty()) |
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514 { |
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515 memcpy(requestData, &(body_[0]), body_.size()); |
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516 attr.requestDataSize = body_.size(); |
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517 attr.requestData = requestData; |
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518 } |
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519 attr.userData = new FetchContext(oracle_, receiver_, command_.release(), expectedContentType); |
| 825 | 520 |
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521 // Must be the last call to prevent memory leak on error |
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522 emscripten_fetch(&attr, url_.c_str()); |
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523 } |
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524 catch(...) |
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525 { |
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526 if(requestData != NULL) |
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527 free(requestData); |
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528 throw; |
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529 } |
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530 } |
| 825 | 531 }; |
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532 |
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533 |
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534 void WebAssemblyOracle::SetOrthancUrl(FetchCommand& command, |
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535 const std::string& uri) const |
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536 { |
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537 if (isLocalOrthanc_) |
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538 { |
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539 command.SetUrl(localOrthancRoot_ + uri); |
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540 } |
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541 else |
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542 { |
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543 command.SetUrl(remoteOrthanc_.GetUrl() + uri); |
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544 command.AddHttpHeaders(remoteOrthanc_.GetHttpHeaders()); |
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545 |
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546 if (!remoteOrthanc_.GetUsername().empty()) |
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547 { |
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548 command.SetCredentials(remoteOrthanc_.GetUsername(), remoteOrthanc_.GetPassword()); |
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549 } |
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550 } |
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551 } |
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552 |
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553 |
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554 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
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555 HttpCommand* command) |
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556 { |
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557 FetchCommand fetch(*this, receiver, command); |
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558 |
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559 fetch.SetMethod(command->GetMethod()); |
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560 fetch.SetUrl(command->GetUrl()); |
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561 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
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562 fetch.SetTimeout(command->GetTimeout()); |
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563 |
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564 if (command->GetMethod() == Orthanc::HttpMethod_Post || |
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565 command->GetMethod() == Orthanc::HttpMethod_Put) |
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566 { |
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567 std::string body; |
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568 command->SwapBody(body); |
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569 fetch.SetBody(body); |
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570 } |
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571 |
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572 fetch.Execute(); |
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573 } |
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574 |
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575 |
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576 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
| 825 | 577 OrthancRestApiCommand* command) |
| 578 { | |
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579 try |
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580 { |
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581 //LOG(TRACE) << "*********** WebAssemblyOracle::Execute."; |
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582 //LOG(TRACE) << "WebAssemblyOracle::Execute | command = " << command; |
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583 FetchCommand fetch(*this, receiver, command); |
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584 |
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585 fetch.SetMethod(command->GetMethod()); |
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586 SetOrthancUrl(fetch, command->GetUri()); |
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587 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
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588 fetch.SetTimeout(command->GetTimeout()); |
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589 |
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590 if (command->GetMethod() == Orthanc::HttpMethod_Post || |
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591 command->GetMethod() == Orthanc::HttpMethod_Put) |
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592 { |
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593 std::string body; |
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594 command->SwapBody(body); |
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595 fetch.SetBody(body); |
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596 } |
| 825 | 597 |
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598 fetch.Execute(); |
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599 //LOG(TRACE) << "*********** successful end of WebAssemblyOracle::Execute."; |
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600 } |
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601 catch (const Orthanc::OrthancException& e) |
| 825 | 602 { |
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603 if (e.HasDetails()) |
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604 { |
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605 LOG(ERROR) << "OrthancException in WebAssemblyOracle::Execute: " << e.What() << " Details: " << e.GetDetails(); |
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606 } |
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607 else |
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608 { |
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609 LOG(ERROR) << "OrthancException in WebAssemblyOracle::Execute: " << e.What(); |
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610 } |
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611 //LOG(TRACE) << "*********** failing end of WebAssemblyOracle::Execute."; |
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612 throw; |
| 825 | 613 } |
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614 catch (const std::exception& e) |
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615 { |
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616 LOG(ERROR) << "std::exception in WebAssemblyOracle::Execute: " << e.what(); |
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617 // LOG(TRACE) << "*********** failing end of WebAssemblyOracle::Execute."; |
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618 throw; |
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619 } |
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620 catch (...) |
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621 { |
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622 LOG(ERROR) << "Unknown exception in WebAssemblyOracle::Execute"; |
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623 // LOG(TRACE) << "*********** failing end of WebAssemblyOracle::Execute."; |
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624 throw; |
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625 } |
| 825 | 626 } |
| 627 | |
| 628 | |
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629 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
| 825 | 630 GetOrthancImageCommand* command) |
| 631 { | |
| 632 FetchCommand fetch(*this, receiver, command); | |
| 633 | |
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634 SetOrthancUrl(fetch, command->GetUri()); |
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635 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
| 825 | 636 fetch.SetTimeout(command->GetTimeout()); |
| 637 | |
| 638 fetch.Execute(); | |
| 639 } | |
| 640 | |
| 641 | |
|
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642 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
| 825 | 643 GetOrthancWebViewerJpegCommand* command) |
| 644 { | |
| 645 FetchCommand fetch(*this, receiver, command); | |
| 646 | |
|
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647 SetOrthancUrl(fetch, command->GetUri()); |
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648 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
| 825 | 649 fetch.SetTimeout(command->GetTimeout()); |
| 650 | |
| 651 fetch.Execute(); | |
| 652 } | |
| 653 | |
| 654 | |
|
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655 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
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656 ParseDicomFromWadoCommand* command) |
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657 { |
|
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658 std::unique_ptr<ParseDicomFromWadoCommand> protection(command); |
|
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659 |
|
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660 #if ORTHANC_ENABLE_DCMTK == 1 |
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661 if (dicomCache_.get()) |
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662 { |
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|
663 ParsedDicomCache::Reader reader(*dicomCache_, BUCKET_SOP, protection->GetSopInstanceUid()); |
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|
664 if (reader.IsValid() && |
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|
665 reader.HasPixelData()) |
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|
666 { |
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|
667 // Reuse the DICOM file from the cache |
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668 ParseDicomSuccessMessage message(*protection, reader.GetDicom(), |
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669 reader.GetFileSize(), reader.HasPixelData()); |
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670 EmitMessage(receiver, message); |
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671 return; |
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672 } |
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673 } |
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674 #endif |
| 825 | 675 |
|
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676 switch (command->GetRestCommand().GetType()) |
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677 { |
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678 case IOracleCommand::Type_Http: |
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679 { |
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680 const HttpCommand& rest = |
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681 dynamic_cast<const HttpCommand&>(protection->GetRestCommand()); |
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682 |
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683 FetchCommand fetch(*this, receiver, protection.release()); |
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684 |
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685 fetch.SetMethod(rest.GetMethod()); |
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686 fetch.SetUrl(rest.GetUrl()); |
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687 fetch.AddHttpHeaders(rest.GetHttpHeaders()); |
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688 fetch.SetTimeout(rest.GetTimeout()); |
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689 |
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690 if (rest.GetMethod() == Orthanc::HttpMethod_Post || |
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691 rest.GetMethod() == Orthanc::HttpMethod_Put) |
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692 { |
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693 std::string body = rest.GetBody(); |
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694 fetch.SetBody(body); |
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695 } |
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696 |
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697 fetch.Execute(); |
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698 break; |
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699 } |
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700 |
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701 case IOracleCommand::Type_OrthancRestApi: |
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702 { |
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703 const OrthancRestApiCommand& rest = |
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704 dynamic_cast<const OrthancRestApiCommand&>(protection->GetRestCommand()); |
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705 |
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706 FetchCommand fetch(*this, receiver, protection.release()); |
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707 |
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708 fetch.SetMethod(rest.GetMethod()); |
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709 SetOrthancUrl(fetch, rest.GetUri()); |
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710 fetch.AddHttpHeaders(rest.GetHttpHeaders()); |
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711 fetch.SetTimeout(rest.GetTimeout()); |
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712 |
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713 if (rest.GetMethod() == Orthanc::HttpMethod_Post || |
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714 rest.GetMethod() == Orthanc::HttpMethod_Put) |
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715 { |
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716 std::string body = rest.GetBody(); |
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717 fetch.SetBody(body); |
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718 } |
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719 |
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720 fetch.Execute(); |
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721 break; |
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722 } |
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723 |
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724 default: |
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725 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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726 } |
|
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727 } |
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728 |
| 825 | 729 |
|
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730 bool WebAssemblyOracle::Schedule(boost::shared_ptr<IObserver> receiver, |
| 825 | 731 IOracleCommand* command) |
| 732 { | |
|
977
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733 LOG(TRACE) << "WebAssemblyOracle::Schedule : receiver = " |
|
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734 << std::hex << &receiver; |
|
977
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735 |
|
1298
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736 std::unique_ptr<IOracleCommand> protection(command); |
| 825 | 737 |
| 738 if (command == NULL) | |
| 739 { | |
| 740 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 741 } | |
| 742 | |
| 743 switch (command->GetType()) | |
| 744 { | |
|
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745 case IOracleCommand::Type_Http: |
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746 Execute(receiver, dynamic_cast<HttpCommand*>(protection.release())); |
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747 break; |
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748 |
| 825 | 749 case IOracleCommand::Type_OrthancRestApi: |
| 750 Execute(receiver, dynamic_cast<OrthancRestApiCommand*>(protection.release())); | |
| 751 break; | |
| 752 | |
| 753 case IOracleCommand::Type_GetOrthancImage: | |
| 754 Execute(receiver, dynamic_cast<GetOrthancImageCommand*>(protection.release())); | |
| 755 break; | |
| 756 | |
| 757 case IOracleCommand::Type_GetOrthancWebViewerJpeg: | |
| 758 break; | |
| 759 | |
| 760 case IOracleCommand::Type_Sleep: | |
| 761 { | |
| 762 unsigned int timeoutMS = dynamic_cast<SleepOracleCommand*>(command)->GetDelay(); | |
| 763 emscripten_set_timeout(TimeoutContext::Callback, timeoutMS, | |
| 764 new TimeoutContext(*this, receiver, protection.release())); | |
| 765 break; | |
| 766 } | |
| 767 | |
|
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768 case IOracleCommand::Type_ParseDicomFromWado: |
|
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769 #if ORTHANC_ENABLE_DCMTK == 1 |
|
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770 Execute(receiver, dynamic_cast<ParseDicomFromWadoCommand*>(protection.release())); |
|
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771 #else |
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772 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented, |
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773 "DCMTK must be enabled to parse DICOM files"); |
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774 #endif |
|
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775 break; |
|
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|
776 |
| 825 | 777 default: |
|
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778 LOG(ERROR) << "Command type not implemented by the WebAssembly Oracle (in Schedule): " |
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779 << command->GetType(); |
|
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780 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
| 825 | 781 } |
|
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782 |
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|
783 return true; |
| 825 | 784 } |
|
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|
785 |
|
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changeset
|
786 |
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|
787 void WebAssemblyOracle::SetDicomCacheSize(size_t size) |
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788 { |
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789 #if ORTHANC_ENABLE_DCMTK == 1 |
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790 if (size == 0) |
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791 { |
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792 dicomCache_.reset(); |
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793 } |
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794 else |
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795 { |
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|
796 dicomCache_.reset(new ParsedDicomCache(size)); |
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797 } |
|
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798 #else |
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|
799 LOG(INFO) << "DCMTK support is disabled, the DICOM cache is disabled"; |
|
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|
800 #endif |
| 825 | 801 } |
| 802 } |