Mercurial > hg > orthanc-stone
annotate Applications/Platforms/WebAssembly/WebAssemblyOracle.cpp @ 1739:9ac2a65d4172
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 06 Jan 2021 17:50:00 +0100 |
| parents | 81273beabc9f |
| children | 3889ae96d2e9 |
| rev | line source |
|---|---|
| 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) 2017-2021 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. | |
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16 * |
| 825 | 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 | |
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22 #if defined(ORTHANC_BUILDING_STONE_LIBRARY) && ORTHANC_BUILDING_STONE_LIBRARY == 1 |
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23 # include "WebAssemblyOracle_Includes.h" |
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24 #else |
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25 // This is the case when using the WebAssembly side module, and this |
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26 // source file must be compiled within the WebAssembly main module |
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27 # include <Oracle/WebAssemblyOracle_Includes.h> |
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28 #endif |
| 825 | 29 |
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30 #include <OrthancException.h> |
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31 #include <Toolbox.h> |
| 825 | 32 |
| 33 #include <emscripten.h> | |
| 34 #include <emscripten/html5.h> | |
| 35 #include <emscripten/fetch.h> | |
| 36 | |
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37 |
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38 #if ORTHANC_ENABLE_DCMTK == 1 |
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39 static unsigned int BUCKET_SOP = 1; |
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40 #endif |
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41 |
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42 |
| 825 | 43 namespace OrthancStone |
| 44 { | |
| 45 class WebAssemblyOracle::TimeoutContext | |
| 46 { | |
| 47 private: | |
| 48 WebAssemblyOracle& oracle_; | |
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49 boost::weak_ptr<IObserver> receiver_; |
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50 std::unique_ptr<SleepOracleCommand> command_; |
| 825 | 51 |
| 52 public: | |
| 53 TimeoutContext(WebAssemblyOracle& oracle, | |
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54 boost::weak_ptr<IObserver> receiver, |
| 825 | 55 IOracleCommand* command) : |
| 56 oracle_(oracle), | |
| 57 receiver_(receiver) | |
| 58 { | |
| 59 if (command == NULL) | |
| 60 { | |
| 61 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 62 } | |
| 63 else | |
| 64 { | |
| 65 command_.reset(dynamic_cast<SleepOracleCommand*>(command)); | |
| 66 } | |
| 67 } | |
| 68 | |
| 69 void EmitMessage() | |
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70 { |
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71 assert(command_.get() != NULL); |
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72 |
| 825 | 73 SleepOracleCommand::TimeoutMessage message(*command_); |
| 74 oracle_.EmitMessage(receiver_, message); | |
| 75 } | |
| 76 | |
| 77 static void Callback(void *userData) | |
| 78 { | |
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79 std::unique_ptr<TimeoutContext> context(reinterpret_cast<TimeoutContext*>(userData)); |
| 825 | 80 context->EmitMessage(); |
| 81 } | |
| 82 }; | |
| 83 | |
| 84 | |
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85 /** |
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86 This object is created on the heap for every http request. |
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87 It is deleted in the success (or error) callbacks. |
| 825 | 88 |
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89 This object references the receiver of the request. Since this is a raw |
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90 reference, we need additional checks to make sure we send the response to |
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91 the same object, for the object can be deleted and a new one recreated at the |
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92 same address (it often happens in the [single-threaded] browser context). |
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93 */ |
| 825 | 94 class WebAssemblyOracle::FetchContext : public boost::noncopyable |
| 95 { | |
| 96 private: | |
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97 WebAssemblyOracle& oracle_; |
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98 boost::weak_ptr<IObserver> receiver_; |
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99 std::unique_ptr<IOracleCommand> command_; |
| 825 | 100 std::string expectedContentType_; |
| 101 | |
| 102 public: | |
| 103 FetchContext(WebAssemblyOracle& oracle, | |
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104 boost::weak_ptr<IObserver> receiver, |
| 825 | 105 IOracleCommand* command, |
| 106 const std::string& expectedContentType) : | |
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107 oracle_(oracle), |
| 825 | 108 receiver_(receiver), |
| 109 command_(command), | |
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110 expectedContentType_(expectedContentType) |
| 825 | 111 { |
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112 if (Orthanc::Logging::IsTraceLevelEnabled()) |
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113 { |
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114 // Calling "receiver.lock()" is expensive, hence the quick check if TRACE is enabled |
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115 LOG(TRACE) << "WebAssemblyOracle::FetchContext::FetchContext() | " |
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116 << "receiver address = " << std::hex << receiver.lock().get(); |
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117 } |
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118 |
| 825 | 119 if (command == NULL) |
| 120 { | |
| 121 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 122 } | |
| 123 } | |
| 124 | |
| 125 const std::string& GetExpectedContentType() const | |
| 126 { | |
| 127 return expectedContentType_; | |
| 128 } | |
| 129 | |
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130 void EmitException(const Orthanc::OrthancException& exception) |
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131 { |
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132 assert(command_.get() != NULL); |
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133 OracleCommandExceptionMessage message(*command_, exception); |
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134 oracle_.EmitMessage(receiver_, message); |
| 825 | 135 } |
| 136 | |
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137 void ProcessFetchResult(const std::string& answer, |
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138 const HttpHeaders& headers) |
| 825 | 139 { |
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140 assert(command_.get() != NULL); |
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141 oracle_.ProcessFetchResult(receiver_, answer, headers, *command_); |
| 825 | 142 } |
| 143 | |
| 144 static void SuccessCallback(emscripten_fetch_t *fetch) | |
| 145 { | |
| 146 /** | |
| 147 * Firstly, make a local copy of the fetched information, and | |
| 148 * free data associated with the fetch. | |
| 149 **/ | |
| 150 | |
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151 if (fetch->userData == NULL) |
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152 { |
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153 LOG(ERROR) << "WebAssemblyOracle::FetchContext::SuccessCallback fetch->userData is NULL!"; |
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154 return; |
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155 } |
| 825 | 156 |
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157 std::unique_ptr<FetchContext> context(reinterpret_cast<FetchContext*>(fetch->userData)); |
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158 |
| 825 | 159 std::string answer; |
| 160 if (fetch->numBytes > 0) | |
| 161 { | |
| 162 answer.assign(fetch->data, fetch->numBytes); | |
| 163 } | |
| 164 | |
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165 |
| 825 | 166 /** |
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167 * Retrieving the headers of the HTTP answer. |
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168 **/ |
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169 HttpHeaders headers; |
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170 |
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171 #if (__EMSCRIPTEN_major__ < 1 || \ |
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172 (__EMSCRIPTEN_major__ == 1 && __EMSCRIPTEN_minor__ < 38) || \ |
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173 (__EMSCRIPTEN_major__ == 1 && __EMSCRIPTEN_minor__ == 38 && __EMSCRIPTEN_tiny__ < 37)) |
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174 # warning Consider upgrading Emscripten to a version above 1.38.37, incomplete support of Fetch API |
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175 |
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176 /** |
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177 * HACK - If emscripten < 1.38.37, the fetch API does not |
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178 * contain a way to retrieve the HTTP headers of the answer. We |
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179 * make the assumption that the "Content-Type" header of the |
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180 * response is the same as the "Accept" header of the |
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181 * query. This is fixed thanks to the |
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182 * "emscripten_fetch_get_response_headers()" function that was |
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183 * added to "fetch.h" at emscripten-1.38.37 on 2019-06-26. |
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184 * |
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185 * https://github.com/emscripten-core/emscripten/blob/1.38.37/system/include/emscripten/fetch.h |
| 825 | 186 * https://github.com/emscripten-core/emscripten/pull/8486 |
| 187 **/ | |
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188 if (fetch->userData != NULL) |
| 825 | 189 { |
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190 if (!context->GetExpectedContentType().empty()) |
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191 { |
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192 headers["Content-Type"] = context->GetExpectedContentType(); |
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193 } |
| 825 | 194 } |
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195 #else |
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196 { |
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197 size_t size = emscripten_fetch_get_response_headers_length(fetch); |
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198 |
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199 std::string plainHeaders(size + 1, '\0'); |
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200 emscripten_fetch_get_response_headers(fetch, &plainHeaders[0], size + 1); |
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201 |
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202 std::vector<std::string> tokens; |
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203 Orthanc::Toolbox::TokenizeString(tokens, plainHeaders, '\n'); |
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204 |
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205 for (size_t i = 0; i < tokens.size(); i++) |
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206 { |
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207 size_t p = tokens[i].find(':'); |
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208 if (p != std::string::npos) |
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209 { |
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210 std::string key = Orthanc::Toolbox::StripSpaces(tokens[i].substr(0, p)); |
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211 std::string value = Orthanc::Toolbox::StripSpaces(tokens[i].substr(p + 1)); |
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212 headers[key] = value; |
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213 } |
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214 } |
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215 } |
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216 #endif |
| 825 | 217 |
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218 LOG(TRACE) << "About to call emscripten_fetch_close"; |
| 825 | 219 emscripten_fetch_close(fetch); |
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220 LOG(TRACE) << "Successfully called emscripten_fetch_close"; |
| 825 | 221 |
| 222 /** | |
| 223 * Secondly, use the retrieved data. | |
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224 * IMPORTANT NOTE: the receiver might be dead. This is prevented |
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225 * by the object responsible for zombie check, later on. |
| 825 | 226 **/ |
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227 try |
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228 { |
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229 if (context.get() == NULL) |
| 825 | 230 { |
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231 LOG(ERROR) << "WebAssemblyOracle::FetchContext::SuccessCallback: (context.get() == NULL)"; |
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232 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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233 } |
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234 else |
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235 { |
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236 context->ProcessFetchResult(answer, headers); |
| 825 | 237 } |
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238 } |
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239 catch (Orthanc::OrthancException& e) |
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240 { |
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241 LOG(INFO) << "Error while processing a fetch answer in the oracle: " << e.What(); |
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242 context->EmitException(e); |
| 825 | 243 } |
| 244 } | |
| 245 | |
| 246 static void FailureCallback(emscripten_fetch_t *fetch) | |
| 247 { | |
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248 std::unique_ptr<FetchContext> context(reinterpret_cast<FetchContext*>(fetch->userData)); |
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249 |
| 1572 | 250 #if 0 |
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251 { |
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252 const size_t kEmscriptenStatusTextSize = sizeof(emscripten_fetch_t::statusText); |
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253 char message[kEmscriptenStatusTextSize + 1]; |
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254 memcpy(message, fetch->statusText, kEmscriptenStatusTextSize); |
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255 message[kEmscriptenStatusTextSize] = 0; |
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256 |
| 1572 | 257 LOG(ERROR) << "Fetching " << fetch->url |
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258 << " failed, HTTP failure status code: " << fetch->status |
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259 << " | statusText = " << message |
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260 << " | numBytes = " << fetch->numBytes |
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261 << " | totalBytes = " << fetch->totalBytes |
| 1572 | 262 << " | readyState = " << fetch->readyState; |
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263 } |
| 1572 | 264 #endif |
| 825 | 265 |
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266 context->EmitException(Orthanc::OrthancException(Orthanc::ErrorCode_NetworkProtocol)); |
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267 |
| 825 | 268 /** |
| 269 * TODO - The following code leads to an infinite recursion, at | |
| 270 * least with Firefox running on incognito mode => WHY? | |
| 271 **/ | |
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272 emscripten_fetch_close(fetch); // Also free data on failure. |
| 825 | 273 } |
| 274 }; | |
| 275 | |
| 276 | |
| 277 | |
| 278 class WebAssemblyOracle::FetchCommand : public boost::noncopyable | |
| 279 { | |
| 280 private: | |
| 281 WebAssemblyOracle& oracle_; | |
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282 boost::weak_ptr<IObserver> receiver_; |
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283 std::unique_ptr<IOracleCommand> command_; |
| 825 | 284 Orthanc::HttpMethod method_; |
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285 std::string url_; |
| 825 | 286 std::string body_; |
| 287 HttpHeaders headers_; | |
| 288 unsigned int timeout_; | |
| 289 std::string expectedContentType_; | |
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290 bool hasCredentials_; |
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291 std::string username_; |
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292 std::string password_; |
| 825 | 293 |
| 294 public: | |
| 295 FetchCommand(WebAssemblyOracle& oracle, | |
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296 boost::weak_ptr<IObserver> receiver, |
| 825 | 297 IOracleCommand* command) : |
| 298 oracle_(oracle), | |
| 299 receiver_(receiver), | |
| 300 command_(command), | |
| 301 method_(Orthanc::HttpMethod_Get), | |
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302 timeout_(0), |
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303 hasCredentials_(false) |
| 825 | 304 { |
| 305 if (command == NULL) | |
| 306 { | |
| 307 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 308 } | |
| 309 } | |
| 310 | |
| 311 void SetMethod(Orthanc::HttpMethod method) | |
| 312 { | |
| 313 method_ = method; | |
| 314 } | |
| 315 | |
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316 Orthanc::HttpMethod GetMethod() const |
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317 { |
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318 return method_; |
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319 } |
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320 |
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321 void SetUrl(const std::string& url) |
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322 { |
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323 url_ = url; |
| 825 | 324 } |
| 325 | |
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326 const std::string& GetUrl() const |
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327 { |
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328 return url_; |
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329 } |
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330 |
| 825 | 331 void SetBody(std::string& body /* will be swapped */) |
| 332 { | |
| 333 body_.swap(body); | |
| 334 } | |
| 335 | |
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336 void AddHttpHeaders(const HttpHeaders& headers) |
| 825 | 337 { |
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338 for (HttpHeaders::const_iterator it = headers.begin(); it != headers.end(); ++it) |
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339 { |
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340 headers_[it->first] = it->second; |
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341 } |
| 825 | 342 } |
| 343 | |
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344 const HttpHeaders& GetHttpHeaders() const |
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345 { |
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346 return headers_; |
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347 } |
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348 |
| 825 | 349 void SetTimeout(unsigned int timeout) |
| 350 { | |
| 351 timeout_ = timeout; | |
| 352 } | |
| 353 | |
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354 unsigned int GetTimeout() const |
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355 { |
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356 return timeout_; |
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357 } |
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358 |
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359 void SetCredentials(const std::string& username, |
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360 const std::string& password) |
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361 { |
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362 hasCredentials_ = true; |
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363 username_ = username; |
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364 password_ = password; |
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365 } |
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366 |
| 825 | 367 void Execute() |
| 368 { | |
| 369 if (command_.get() == NULL) | |
| 370 { | |
| 371 // Cannot call Execute() twice | |
|
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372 LOG(ERROR) << "WebAssemblyOracle::Execute(): (command_.get() == NULL)"; |
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373 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 825 | 374 } |
| 375 | |
| 376 emscripten_fetch_attr_t attr; | |
| 377 emscripten_fetch_attr_init(&attr); | |
| 378 | |
| 379 const char* method; | |
| 380 | |
| 381 switch (method_) | |
| 382 { | |
| 383 case Orthanc::HttpMethod_Get: | |
| 384 method = "GET"; | |
| 385 break; | |
| 386 | |
| 387 case Orthanc::HttpMethod_Post: | |
| 388 method = "POST"; | |
| 389 break; | |
| 390 | |
| 391 case Orthanc::HttpMethod_Delete: | |
| 392 method = "DELETE"; | |
| 393 break; | |
| 394 | |
| 395 case Orthanc::HttpMethod_Put: | |
| 396 method = "PUT"; | |
| 397 break; | |
| 398 | |
| 399 default: | |
| 400 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 401 } | |
| 402 | |
| 403 strcpy(attr.requestMethod, method); | |
| 404 | |
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405 attr.attributes = EMSCRIPTEN_FETCH_LOAD_TO_MEMORY | EMSCRIPTEN_FETCH_REPLACE; |
| 825 | 406 attr.onsuccess = FetchContext::SuccessCallback; |
| 407 attr.onerror = FetchContext::FailureCallback; | |
| 408 attr.timeoutMSecs = timeout_ * 1000; | |
| 409 | |
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410 if (hasCredentials_) |
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411 { |
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412 attr.withCredentials = EM_TRUE; |
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413 attr.userName = username_.c_str(); |
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414 attr.password = password_.c_str(); |
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415 } |
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416 |
| 825 | 417 std::vector<const char*> headers; |
| 418 headers.reserve(2 * headers_.size() + 1); | |
| 419 | |
| 420 std::string expectedContentType; | |
| 421 | |
| 422 for (HttpHeaders::const_iterator it = headers_.begin(); it != headers_.end(); ++it) | |
| 423 { | |
| 424 std::string key; | |
| 425 Orthanc::Toolbox::ToLowerCase(key, it->first); | |
| 426 | |
| 427 if (key == "accept") | |
| 428 { | |
| 429 expectedContentType = it->second; | |
| 430 } | |
| 431 | |
| 432 if (key != "accept-encoding") // Web browsers forbid the modification of this HTTP header | |
| 433 { | |
| 434 headers.push_back(it->first.c_str()); | |
| 435 headers.push_back(it->second.c_str()); | |
| 436 } | |
| 437 } | |
| 438 | |
| 439 headers.push_back(NULL); // Termination of the array of HTTP headers | |
| 440 | |
| 441 attr.requestHeaders = &headers[0]; | |
| 442 | |
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443 char* requestData = NULL; |
| 825 | 444 if (!body_.empty()) |
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445 requestData = reinterpret_cast<char*>(malloc(body_.size())); |
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446 |
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447 try |
| 825 | 448 { |
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449 if (!body_.empty()) |
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450 { |
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451 memcpy(requestData, &(body_[0]), body_.size()); |
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452 attr.requestDataSize = body_.size(); |
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453 attr.requestData = requestData; |
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454 } |
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455 attr.userData = new FetchContext(oracle_, receiver_, command_.release(), expectedContentType); |
| 825 | 456 |
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457 // Must be the last call to prevent memory leak on error |
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458 emscripten_fetch(&attr, url_.c_str()); |
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459 } |
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460 catch(...) |
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461 { |
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462 if(requestData != NULL) |
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463 free(requestData); |
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464 throw; |
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465 } |
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466 } |
| 825 | 467 }; |
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468 |
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469 |
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470 void WebAssemblyOracle::ProcessFetchResult(boost::weak_ptr<IObserver>& receiver, |
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471 const std::string& answer, |
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472 const HttpHeaders& headers, |
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473 const IOracleCommand& command) |
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474 { |
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475 switch (command.GetType()) |
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476 { |
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477 case IOracleCommand::Type_Http: |
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478 { |
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479 HttpCommand::SuccessMessage message(dynamic_cast<const HttpCommand&>(command), headers, answer); |
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480 EmitMessage(receiver, message); |
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481 break; |
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482 } |
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483 |
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484 case IOracleCommand::Type_OrthancRestApi: |
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485 { |
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486 LOG(TRACE) << "WebAssemblyOracle::FetchContext::SuccessCallback. About to call EmitMessage(message);"; |
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487 OrthancRestApiCommand::SuccessMessage message |
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488 (dynamic_cast<const OrthancRestApiCommand&>(command), headers, answer); |
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489 EmitMessage(receiver, message); |
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490 break; |
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491 } |
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492 |
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493 case IOracleCommand::Type_GetOrthancImage: |
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494 { |
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495 dynamic_cast<const GetOrthancImageCommand&>(command).ProcessHttpAnswer(receiver, *this, answer, headers); |
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496 break; |
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497 } |
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498 |
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499 case IOracleCommand::Type_GetOrthancWebViewerJpeg: |
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500 { |
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501 dynamic_cast<const GetOrthancWebViewerJpegCommand&>(command).ProcessHttpAnswer(receiver, *this, answer); |
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502 break; |
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503 } |
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504 |
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505 case IOracleCommand::Type_ParseDicomFromWado: |
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506 { |
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507 #if ORTHANC_ENABLE_DCMTK == 1 |
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508 const ParseDicomFromWadoCommand& c = dynamic_cast<const ParseDicomFromWadoCommand&>(command); |
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509 |
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510 size_t fileSize; |
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511 std::unique_ptr<Orthanc::ParsedDicomFile> dicom |
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512 (ParseDicomSuccessMessage::ParseWadoAnswer(fileSize, answer, headers)); |
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513 |
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514 { |
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515 ParseDicomSuccessMessage message(c, c.GetSource(), *dicom, fileSize, true); |
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516 EmitMessage(receiver, message); |
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517 } |
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518 |
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519 if (dicomCache_.get()) |
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520 { |
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521 // Store it into the cache for future use |
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522 dicomCache_->Acquire(BUCKET_SOP, c.GetSopInstanceUid(), dicom.release(), fileSize, true); |
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523 } |
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524 #else |
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525 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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526 #endif |
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527 break; |
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528 } |
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529 |
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530 default: |
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531 LOG(ERROR) << "Command type not implemented by the WebAssembly Oracle (in SuccessCallback): " |
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532 << command.GetType(); |
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533 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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534 } |
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535 } |
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536 |
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537 |
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538 void WebAssemblyOracle::SetOrthancUrl(FetchCommand& command, |
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539 const std::string& uri) const |
|
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540 { |
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541 if (isLocalOrthanc_) |
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542 { |
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543 command.SetUrl(localOrthancRoot_ + uri); |
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544 } |
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545 else |
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546 { |
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547 command.SetUrl(remoteOrthanc_.GetUrl() + uri); |
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548 command.AddHttpHeaders(remoteOrthanc_.GetHttpHeaders()); |
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549 |
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550 if (!remoteOrthanc_.GetUsername().empty()) |
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551 { |
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552 command.SetCredentials(remoteOrthanc_.GetUsername(), remoteOrthanc_.GetPassword()); |
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553 } |
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554 } |
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555 } |
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556 |
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557 |
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558 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
|
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559 HttpCommand* command) |
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560 { |
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561 FetchCommand fetch(*this, receiver, command); |
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562 |
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563 fetch.SetMethod(command->GetMethod()); |
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564 fetch.SetUrl(command->GetUrl()); |
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565 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
|
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566 fetch.SetTimeout(command->GetTimeout()); |
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567 |
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568 if (command->GetMethod() == Orthanc::HttpMethod_Post || |
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569 command->GetMethod() == Orthanc::HttpMethod_Put) |
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570 { |
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571 std::string body; |
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572 command->SwapBody(body); |
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573 fetch.SetBody(body); |
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574 } |
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575 |
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576 fetch.Execute(); |
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577 } |
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578 |
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579 |
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580 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
| 825 | 581 OrthancRestApiCommand* command) |
| 582 { | |
|
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583 try |
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584 { |
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585 //LOG(TRACE) << "*********** WebAssemblyOracle::Execute."; |
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586 //LOG(TRACE) << "WebAssemblyOracle::Execute | command = " << command; |
|
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587 FetchCommand fetch(*this, receiver, command); |
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588 |
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589 fetch.SetMethod(command->GetMethod()); |
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590 SetOrthancUrl(fetch, command->GetUri()); |
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591 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
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592 fetch.SetTimeout(command->GetTimeout()); |
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593 |
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594 if (command->GetMethod() == Orthanc::HttpMethod_Post || |
|
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595 command->GetMethod() == Orthanc::HttpMethod_Put) |
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596 { |
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597 std::string body; |
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598 command->SwapBody(body); |
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599 fetch.SetBody(body); |
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600 } |
| 825 | 601 |
|
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602 fetch.Execute(); |
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603 //LOG(TRACE) << "*********** successful end of WebAssemblyOracle::Execute."; |
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604 } |
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605 catch (const Orthanc::OrthancException& e) |
| 825 | 606 { |
|
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607 if (e.HasDetails()) |
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608 { |
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|
609 LOG(ERROR) << "OrthancException in WebAssemblyOracle::Execute: " << e.What() << " Details: " << e.GetDetails(); |
|
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610 } |
|
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611 else |
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612 { |
|
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|
613 LOG(ERROR) << "OrthancException in WebAssemblyOracle::Execute: " << e.What(); |
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|
614 } |
|
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615 //LOG(TRACE) << "*********** failing end of WebAssemblyOracle::Execute."; |
|
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616 throw; |
| 825 | 617 } |
|
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618 catch (const std::exception& e) |
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|
619 { |
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|
620 LOG(ERROR) << "std::exception in WebAssemblyOracle::Execute: " << e.what(); |
|
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|
621 // LOG(TRACE) << "*********** failing end of WebAssemblyOracle::Execute."; |
|
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changeset
|
622 throw; |
|
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|
623 } |
|
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|
624 catch (...) |
|
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|
625 { |
|
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changeset
|
626 LOG(ERROR) << "Unknown exception in WebAssemblyOracle::Execute"; |
|
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627 // LOG(TRACE) << "*********** failing end of WebAssemblyOracle::Execute."; |
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|
628 throw; |
|
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diff
changeset
|
629 } |
| 825 | 630 } |
| 631 | |
| 632 | |
|
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|
633 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
| 825 | 634 GetOrthancImageCommand* command) |
| 635 { | |
| 636 FetchCommand fetch(*this, receiver, command); | |
| 637 | |
|
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|
638 SetOrthancUrl(fetch, command->GetUri()); |
|
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changeset
|
639 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
| 825 | 640 fetch.SetTimeout(command->GetTimeout()); |
| 641 | |
| 642 fetch.Execute(); | |
| 643 } | |
| 644 | |
| 645 | |
|
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changeset
|
646 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
| 825 | 647 GetOrthancWebViewerJpegCommand* command) |
| 648 { | |
| 649 FetchCommand fetch(*this, receiver, command); | |
| 650 | |
|
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changeset
|
651 SetOrthancUrl(fetch, command->GetUri()); |
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changeset
|
652 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
| 825 | 653 fetch.SetTimeout(command->GetTimeout()); |
| 654 | |
| 655 fetch.Execute(); | |
| 656 } | |
| 657 | |
| 658 | |
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659 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
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660 ParseDicomFromWadoCommand* command) |
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661 { |
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662 std::unique_ptr<ParseDicomFromWadoCommand> protection(command); |
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663 |
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664 #if ORTHANC_ENABLE_DCMTK == 1 |
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665 if (dicomCache_.get()) |
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666 { |
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667 ParsedDicomCache::Reader reader(*dicomCache_, BUCKET_SOP, protection->GetSopInstanceUid()); |
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668 if (reader.IsValid() && |
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669 reader.HasPixelData()) |
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670 { |
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671 // Reuse the DICOM file from the cache |
|
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672 ParseDicomSuccessMessage message(*protection, protection->GetSource(), reader.GetDicom(), |
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673 reader.GetFileSize(), reader.HasPixelData()); |
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674 EmitMessage(receiver, message); |
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675 return; |
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676 } |
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677 } |
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678 #endif |
| 825 | 679 |
|
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680 switch (command->GetRestCommand().GetType()) |
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681 { |
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682 case IOracleCommand::Type_Http: |
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683 { |
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684 const HttpCommand& rest = |
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685 dynamic_cast<const HttpCommand&>(protection->GetRestCommand()); |
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686 |
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687 FetchCommand fetch(*this, receiver, protection.release()); |
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688 |
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689 fetch.SetMethod(rest.GetMethod()); |
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690 fetch.SetUrl(rest.GetUrl()); |
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691 fetch.AddHttpHeaders(rest.GetHttpHeaders()); |
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692 fetch.SetTimeout(rest.GetTimeout()); |
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693 |
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694 if (rest.GetMethod() == Orthanc::HttpMethod_Post || |
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695 rest.GetMethod() == Orthanc::HttpMethod_Put) |
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696 { |
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697 std::string body = rest.GetBody(); |
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698 fetch.SetBody(body); |
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699 } |
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700 |
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701 fetch.Execute(); |
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702 break; |
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703 } |
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704 |
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705 case IOracleCommand::Type_OrthancRestApi: |
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706 { |
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707 const OrthancRestApiCommand& rest = |
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708 dynamic_cast<const OrthancRestApiCommand&>(protection->GetRestCommand()); |
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709 |
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710 FetchCommand fetch(*this, receiver, protection.release()); |
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711 |
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712 fetch.SetMethod(rest.GetMethod()); |
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713 SetOrthancUrl(fetch, rest.GetUri()); |
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714 fetch.AddHttpHeaders(rest.GetHttpHeaders()); |
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715 fetch.SetTimeout(rest.GetTimeout()); |
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716 |
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717 if (rest.GetMethod() == Orthanc::HttpMethod_Post || |
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718 rest.GetMethod() == Orthanc::HttpMethod_Put) |
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719 { |
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720 std::string body = rest.GetBody(); |
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721 fetch.SetBody(body); |
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722 } |
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723 |
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724 fetch.Execute(); |
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725 break; |
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726 } |
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727 |
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728 default: |
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729 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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730 } |
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731 } |
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732 |
| 825 | 733 |
|
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734 bool WebAssemblyOracle::Schedule(boost::shared_ptr<IObserver> receiver, |
| 825 | 735 IOracleCommand* command) |
| 736 { | |
|
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737 LOG(TRACE) << "WebAssemblyOracle::Schedule : receiver = " |
|
1468
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|
738 << std::hex << receiver.get(); |
|
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739 |
|
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740 std::unique_ptr<IOracleCommand> protection(command); |
| 825 | 741 |
| 742 if (command == NULL) | |
| 743 { | |
| 744 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 745 } | |
| 746 | |
| 747 switch (command->GetType()) | |
| 748 { | |
|
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749 case IOracleCommand::Type_Http: |
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750 Execute(receiver, dynamic_cast<HttpCommand*>(protection.release())); |
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751 break; |
|
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752 |
| 825 | 753 case IOracleCommand::Type_OrthancRestApi: |
| 754 Execute(receiver, dynamic_cast<OrthancRestApiCommand*>(protection.release())); | |
| 755 break; | |
| 756 | |
| 757 case IOracleCommand::Type_GetOrthancImage: | |
| 758 Execute(receiver, dynamic_cast<GetOrthancImageCommand*>(protection.release())); | |
| 759 break; | |
| 760 | |
| 761 case IOracleCommand::Type_GetOrthancWebViewerJpeg: | |
|
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762 Execute(receiver, dynamic_cast<GetOrthancWebViewerJpegCommand*>(protection.release())); |
| 825 | 763 break; |
| 764 | |
| 765 case IOracleCommand::Type_Sleep: | |
| 766 { | |
| 767 unsigned int timeoutMS = dynamic_cast<SleepOracleCommand*>(command)->GetDelay(); | |
| 768 emscripten_set_timeout(TimeoutContext::Callback, timeoutMS, | |
| 769 new TimeoutContext(*this, receiver, protection.release())); | |
| 770 break; | |
| 771 } | |
| 772 | |
|
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773 case IOracleCommand::Type_ParseDicomFromWado: |
|
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774 #if ORTHANC_ENABLE_DCMTK == 1 |
|
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775 Execute(receiver, dynamic_cast<ParseDicomFromWadoCommand*>(protection.release())); |
|
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776 #else |
|
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777 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented, |
|
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778 "DCMTK must be enabled to parse DICOM files"); |
|
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779 #endif |
|
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780 break; |
|
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|
781 |
| 825 | 782 default: |
|
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783 LOG(ERROR) << "Command type not implemented by the WebAssembly Oracle (in Schedule): " |
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784 << command->GetType(); |
|
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785 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
| 825 | 786 } |
|
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787 |
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|
788 return true; |
| 825 | 789 } |
|
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|
790 |
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791 |
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792 void WebAssemblyOracle::SetDicomCacheSize(size_t size) |
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793 { |
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794 #if ORTHANC_ENABLE_DCMTK == 1 |
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795 if (size == 0) |
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796 { |
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797 dicomCache_.reset(); |
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798 } |
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799 else |
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800 { |
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801 dicomCache_.reset(new ParsedDicomCache(size)); |
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802 } |
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803 #else |
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804 LOG(INFO) << "DCMTK support is disabled, the DICOM cache is disabled"; |
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805 #endif |
| 825 | 806 } |
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807 |
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808 |
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809 WebAssemblyOracle::CachedInstanceAccessor::CachedInstanceAccessor(WebAssemblyOracle& oracle, |
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810 const std::string& sopInstanceUid) |
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811 { |
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812 #if ORTHANC_ENABLE_DCMTK == 1 |
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813 if (oracle.dicomCache_.get() != NULL) |
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814 { |
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815 reader_.reset(new ParsedDicomCache::Reader(*oracle.dicomCache_, BUCKET_SOP, sopInstanceUid)); |
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816 } |
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817 #endif |
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818 } |
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819 |
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820 bool WebAssemblyOracle::CachedInstanceAccessor::IsValid() const |
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821 { |
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822 #if ORTHANC_ENABLE_DCMTK == 1 |
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823 return (reader_.get() != NULL && |
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824 reader_->IsValid()); |
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825 #else |
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826 return false; |
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827 #endif |
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828 } |
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829 |
| 1678 | 830 #if ORTHANC_ENABLE_DCMTK == 1 |
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831 const Orthanc::ParsedDicomFile& WebAssemblyOracle::CachedInstanceAccessor::GetDicom() const |
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832 { |
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833 if (IsValid()) |
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834 { |
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835 assert(reader_.get() != NULL); |
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836 return reader_->GetDicom(); |
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837 } |
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838 else |
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839 { |
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840 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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841 } |
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842 } |
| 1678 | 843 #endif |
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844 |
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845 size_t WebAssemblyOracle::CachedInstanceAccessor::GetFileSize() const |
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846 { |
| 1678 | 847 #if ORTHANC_ENABLE_DCMTK == 1 |
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848 if (IsValid()) |
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849 { |
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850 assert(reader_.get() != NULL); |
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851 return reader_->GetFileSize(); |
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852 } |
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853 else |
| 1678 | 854 #endif |
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855 { |
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856 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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857 } |
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858 } |
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859 |
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860 bool WebAssemblyOracle::CachedInstanceAccessor::HasPixelData() const |
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861 { |
| 1678 | 862 #if ORTHANC_ENABLE_DCMTK == 1 |
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863 if (IsValid()) |
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864 { |
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865 assert(reader_.get() != NULL); |
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866 return reader_->HasPixelData(); |
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867 } |
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868 else |
| 1678 | 869 #endif |
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870 { |
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871 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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872 } |
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873 } |
| 825 | 874 } |