Mercurial > hg > orthanc-stone
annotate Framework/Oracle/WebAssemblyOracle.cpp @ 1254:7a0460c5e98e broker
don't follow redirections if contacting the Orthanc REST API
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 08 Jan 2020 14:01:36 +0100 |
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825 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2019 Osimis S.A., Belgium | |
6 * | |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU Affero General Public License | |
9 * as published by the Free Software Foundation, either version 3 of | |
10 * the License, or (at your option) any later version. | |
11 * | |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 * Affero General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Affero General Public License | |
18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 **/ | |
20 | |
21 | |
22 #include "WebAssemblyOracle.h" | |
23 | |
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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_; |
825 | 46 std::auto_ptr<SleepOracleCommand> command_; |
47 | |
48 public: | |
49 TimeoutContext(WebAssemblyOracle& oracle, | |
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50 boost::weak_ptr<IObserver> receiver, |
825 | 51 IOracleCommand* command) : |
52 oracle_(oracle), | |
53 receiver_(receiver) | |
54 { | |
55 if (command == NULL) | |
56 { | |
57 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
58 } | |
59 else | |
60 { | |
61 command_.reset(dynamic_cast<SleepOracleCommand*>(command)); | |
62 } | |
63 } | |
64 | |
65 void EmitMessage() | |
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66 { |
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67 assert(command_.get() != NULL); |
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68 |
825 | 69 SleepOracleCommand::TimeoutMessage message(*command_); |
70 oracle_.EmitMessage(receiver_, message); | |
71 } | |
72 | |
73 static void Callback(void *userData) | |
74 { | |
75 std::auto_ptr<TimeoutContext> context(reinterpret_cast<TimeoutContext*>(userData)); | |
76 context->EmitMessage(); | |
77 } | |
78 }; | |
79 | |
80 | |
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81 /** |
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82 This object is created on the heap for every http request. |
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83 It is deleted in the success (or error) callbacks. |
825 | 84 |
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85 This object references the receiver of the request. Since this is a raw |
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86 reference, we need additional checks to make sure we send the response to |
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87 the same object, for the object can be deleted and a new one recreated at the |
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88 same address (it often happens in the [single-threaded] browser context). |
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89 */ |
825 | 90 class WebAssemblyOracle::FetchContext : public boost::noncopyable |
91 { | |
92 private: | |
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93 WebAssemblyOracle& oracle_; |
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94 boost::weak_ptr<IObserver> receiver_; |
825 | 95 std::auto_ptr<IOracleCommand> command_; |
96 std::string expectedContentType_; | |
97 | |
98 public: | |
99 FetchContext(WebAssemblyOracle& oracle, | |
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100 boost::weak_ptr<IObserver> receiver, |
825 | 101 IOracleCommand* command, |
102 const std::string& expectedContentType) : | |
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103 oracle_(oracle), |
825 | 104 receiver_(receiver), |
105 command_(command), | |
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106 expectedContentType_(expectedContentType) |
825 | 107 { |
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108 LOG(TRACE) << "WebAssemblyOracle::FetchContext::FetchContext() | " |
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109 << "receiver address = " << std::hex << &receiver; |
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110 |
825 | 111 if (command == NULL) |
112 { | |
113 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
114 } | |
115 } | |
116 | |
117 const std::string& GetExpectedContentType() const | |
118 { | |
119 return expectedContentType_; | |
120 } | |
121 | |
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122 IMessageEmitter& GetEmitter() const |
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123 { |
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124 return oracle_; |
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125 } |
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126 |
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127 boost::weak_ptr<IObserver> GetReceiver() const |
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128 { |
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129 return receiver_; |
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130 } |
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131 |
825 | 132 void EmitMessage(const IMessage& message) |
133 { | |
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134 LOG(TRACE) << "WebAssemblyOracle::FetchContext::EmitMessage receiver_ = " |
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135 << std::hex << &receiver_ << std::dec; |
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136 oracle_.EmitMessage(receiver_, message); |
825 | 137 } |
138 | |
139 IOracleCommand& GetCommand() const | |
140 { | |
141 return *command_; | |
142 } | |
143 | |
144 template <typename T> | |
145 const T& GetTypedCommand() const | |
146 { | |
147 return dynamic_cast<T&>(*command_); | |
148 } | |
149 | |
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150 #if ORTHANC_ENABLE_DCMTK == 1 |
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151 void StoreInCache(const std::string& sopInstanceUid, |
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152 std::auto_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::auto_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::auto_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(); |
825 | 313 } |
314 } | |
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315 } |
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316 catch (Orthanc::OrthancException& e) |
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317 { |
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318 LOG(ERROR) << "Error while processing a fetch answer in the oracle: " << e.What(); |
825 | 319 } |
320 } | |
321 | |
322 static void FailureCallback(emscripten_fetch_t *fetch) | |
323 { | |
324 std::auto_ptr<FetchContext> context(reinterpret_cast<FetchContext*>(fetch->userData)); | |
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325 |
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326 { |
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327 const size_t kEmscriptenStatusTextSize = sizeof(emscripten_fetch_t::statusText); |
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328 char message[kEmscriptenStatusTextSize + 1]; |
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329 memcpy(message, fetch->statusText, kEmscriptenStatusTextSize); |
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330 message[kEmscriptenStatusTextSize] = 0; |
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331 |
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332 /*LOG(ERROR) << "Fetching " << fetch->url |
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333 << " failed, HTTP failure status code: " << fetch->status |
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334 << " | statusText = " << message |
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335 << " | numBytes = " << fetch->numBytes |
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336 << " | totalBytes = " << fetch->totalBytes |
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337 << " | readyState = " << fetch->readyState;*/ |
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338 } |
825 | 339 |
995
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340 { |
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341 OracleCommandExceptionMessage message |
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342 (context->GetCommand(), Orthanc::OrthancException(Orthanc::ErrorCode_NetworkProtocol)); |
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343 context->EmitMessage(message); |
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344 } |
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345 |
825 | 346 /** |
347 * TODO - The following code leads to an infinite recursion, at | |
348 * least with Firefox running on incognito mode => WHY? | |
349 **/ | |
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350 emscripten_fetch_close(fetch); // Also free data on failure. |
825 | 351 } |
352 }; | |
353 | |
354 | |
355 | |
356 class WebAssemblyOracle::FetchCommand : public boost::noncopyable | |
357 { | |
358 private: | |
359 WebAssemblyOracle& oracle_; | |
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360 boost::weak_ptr<IObserver> receiver_; |
825 | 361 std::auto_ptr<IOracleCommand> command_; |
362 Orthanc::HttpMethod method_; | |
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363 std::string url_; |
825 | 364 std::string body_; |
365 HttpHeaders headers_; | |
366 unsigned int timeout_; | |
367 std::string expectedContentType_; | |
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368 bool hasCredentials_; |
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369 std::string username_; |
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370 std::string password_; |
825 | 371 |
372 public: | |
373 FetchCommand(WebAssemblyOracle& oracle, | |
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374 boost::weak_ptr<IObserver> receiver, |
825 | 375 IOracleCommand* command) : |
376 oracle_(oracle), | |
377 receiver_(receiver), | |
378 command_(command), | |
379 method_(Orthanc::HttpMethod_Get), | |
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380 timeout_(0), |
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381 hasCredentials_(false) |
825 | 382 { |
383 if (command == NULL) | |
384 { | |
385 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
386 } | |
387 } | |
388 | |
389 void SetMethod(Orthanc::HttpMethod method) | |
390 { | |
391 method_ = method; | |
392 } | |
393 | |
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394 void SetUrl(const std::string& url) |
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395 { |
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396 url_ = url; |
825 | 397 } |
398 | |
399 void SetBody(std::string& body /* will be swapped */) | |
400 { | |
401 body_.swap(body); | |
402 } | |
403 | |
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404 void AddHttpHeaders(const HttpHeaders& headers) |
825 | 405 { |
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406 for (HttpHeaders::const_iterator it = headers.begin(); it != headers.end(); ++it) |
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407 { |
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408 headers_[it->first] = it->second; |
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409 } |
825 | 410 } |
411 | |
412 void SetTimeout(unsigned int timeout) | |
413 { | |
414 timeout_ = timeout; | |
415 } | |
416 | |
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417 void SetCredentials(const std::string& username, |
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418 const std::string& password) |
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419 { |
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420 hasCredentials_ = true; |
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421 username_ = username; |
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422 password_ = password; |
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423 } |
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424 |
825 | 425 void Execute() |
426 { | |
427 if (command_.get() == NULL) | |
428 { | |
429 // Cannot call Execute() twice | |
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430 LOG(ERROR) << "WebAssemblyOracle::Execute(): (command_.get() == NULL)"; |
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431 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
825 | 432 } |
433 | |
434 emscripten_fetch_attr_t attr; | |
435 emscripten_fetch_attr_init(&attr); | |
436 | |
437 const char* method; | |
438 | |
439 switch (method_) | |
440 { | |
441 case Orthanc::HttpMethod_Get: | |
442 method = "GET"; | |
443 break; | |
444 | |
445 case Orthanc::HttpMethod_Post: | |
446 method = "POST"; | |
447 break; | |
448 | |
449 case Orthanc::HttpMethod_Delete: | |
450 method = "DELETE"; | |
451 break; | |
452 | |
453 case Orthanc::HttpMethod_Put: | |
454 method = "PUT"; | |
455 break; | |
456 | |
457 default: | |
458 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
459 } | |
460 | |
461 strcpy(attr.requestMethod, method); | |
462 | |
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463 attr.attributes = EMSCRIPTEN_FETCH_LOAD_TO_MEMORY | EMSCRIPTEN_FETCH_REPLACE; |
825 | 464 attr.onsuccess = FetchContext::SuccessCallback; |
465 attr.onerror = FetchContext::FailureCallback; | |
466 attr.timeoutMSecs = timeout_ * 1000; | |
467 | |
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468 if (hasCredentials_) |
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469 { |
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470 attr.withCredentials = EM_TRUE; |
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471 attr.userName = username_.c_str(); |
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472 attr.password = password_.c_str(); |
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473 } |
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474 |
825 | 475 std::vector<const char*> headers; |
476 headers.reserve(2 * headers_.size() + 1); | |
477 | |
478 std::string expectedContentType; | |
479 | |
480 for (HttpHeaders::const_iterator it = headers_.begin(); it != headers_.end(); ++it) | |
481 { | |
482 std::string key; | |
483 Orthanc::Toolbox::ToLowerCase(key, it->first); | |
484 | |
485 if (key == "accept") | |
486 { | |
487 expectedContentType = it->second; | |
488 } | |
489 | |
490 if (key != "accept-encoding") // Web browsers forbid the modification of this HTTP header | |
491 { | |
492 headers.push_back(it->first.c_str()); | |
493 headers.push_back(it->second.c_str()); | |
494 } | |
495 } | |
496 | |
497 headers.push_back(NULL); // Termination of the array of HTTP headers | |
498 | |
499 attr.requestHeaders = &headers[0]; | |
500 | |
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501 char* requestData = NULL; |
825 | 502 if (!body_.empty()) |
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503 requestData = reinterpret_cast<char*>(malloc(body_.size())); |
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504 |
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505 try |
825 | 506 { |
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507 if (!body_.empty()) |
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508 { |
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509 memcpy(requestData, &(body_[0]), body_.size()); |
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510 attr.requestDataSize = body_.size(); |
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511 attr.requestData = requestData; |
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512 } |
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513 attr.userData = new FetchContext(oracle_, receiver_, command_.release(), expectedContentType); |
825 | 514 |
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515 // Must be the last call to prevent memory leak on error |
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516 emscripten_fetch(&attr, url_.c_str()); |
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517 } |
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518 catch(...) |
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519 { |
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520 if(requestData != NULL) |
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521 free(requestData); |
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522 throw; |
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523 } |
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524 } |
825 | 525 }; |
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526 |
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527 |
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528 void WebAssemblyOracle::SetOrthancUrl(FetchCommand& command, |
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529 const std::string& uri) const |
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530 { |
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531 if (isLocalOrthanc_) |
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532 { |
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533 command.SetUrl(localOrthancRoot_ + uri); |
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534 } |
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535 else |
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536 { |
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537 command.SetUrl(remoteOrthanc_.GetUrl() + uri); |
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538 command.AddHttpHeaders(remoteOrthanc_.GetHttpHeaders()); |
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539 |
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540 if (!remoteOrthanc_.GetUsername().empty()) |
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541 { |
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542 command.SetCredentials(remoteOrthanc_.GetUsername(), remoteOrthanc_.GetPassword()); |
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543 } |
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544 } |
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545 } |
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546 |
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547 |
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548 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
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549 HttpCommand* command) |
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550 { |
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551 FetchCommand fetch(*this, receiver, command); |
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552 |
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553 fetch.SetMethod(command->GetMethod()); |
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554 fetch.SetUrl(command->GetUrl()); |
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555 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
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556 fetch.SetTimeout(command->GetTimeout()); |
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557 |
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558 if (command->GetMethod() == Orthanc::HttpMethod_Post || |
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559 command->GetMethod() == Orthanc::HttpMethod_Put) |
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560 { |
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561 std::string body; |
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562 command->SwapBody(body); |
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563 fetch.SetBody(body); |
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564 } |
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565 |
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566 fetch.Execute(); |
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567 } |
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568 |
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569 |
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570 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
825 | 571 OrthancRestApiCommand* command) |
572 { | |
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573 try |
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574 { |
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575 //LOG(TRACE) << "*********** WebAssemblyOracle::Execute."; |
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576 //LOG(TRACE) << "WebAssemblyOracle::Execute | command = " << command; |
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577 FetchCommand fetch(*this, receiver, command); |
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578 |
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579 fetch.SetMethod(command->GetMethod()); |
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580 SetOrthancUrl(fetch, command->GetUri()); |
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581 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
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582 fetch.SetTimeout(command->GetTimeout()); |
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583 |
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584 if (command->GetMethod() == Orthanc::HttpMethod_Post || |
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585 command->GetMethod() == Orthanc::HttpMethod_Put) |
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586 { |
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587 std::string body; |
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588 command->SwapBody(body); |
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589 fetch.SetBody(body); |
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590 } |
825 | 591 |
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592 fetch.Execute(); |
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593 //LOG(TRACE) << "*********** successful end of WebAssemblyOracle::Execute."; |
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594 } |
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595 catch (const Orthanc::OrthancException& e) |
825 | 596 { |
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597 if (e.HasDetails()) |
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598 { |
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599 LOG(ERROR) << "OrthancException in WebAssemblyOracle::Execute: " << e.What() << " Details: " << e.GetDetails(); |
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600 } |
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601 else |
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602 { |
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603 LOG(ERROR) << "OrthancException in WebAssemblyOracle::Execute: " << e.What(); |
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604 } |
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605 //LOG(TRACE) << "*********** failing end of WebAssemblyOracle::Execute."; |
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606 throw; |
825 | 607 } |
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608 catch (const std::exception& e) |
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609 { |
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610 LOG(ERROR) << "std::exception in WebAssemblyOracle::Execute: " << e.what(); |
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611 // LOG(TRACE) << "*********** failing end of WebAssemblyOracle::Execute."; |
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612 throw; |
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613 } |
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614 catch (...) |
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615 { |
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616 LOG(ERROR) << "Unknown exception in WebAssemblyOracle::Execute"; |
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617 // LOG(TRACE) << "*********** failing end of WebAssemblyOracle::Execute."; |
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618 throw; |
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619 } |
825 | 620 } |
621 | |
622 | |
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623 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
825 | 624 GetOrthancImageCommand* command) |
625 { | |
626 FetchCommand fetch(*this, receiver, command); | |
627 | |
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628 SetOrthancUrl(fetch, command->GetUri()); |
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629 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
825 | 630 fetch.SetTimeout(command->GetTimeout()); |
631 | |
632 fetch.Execute(); | |
633 } | |
634 | |
635 | |
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636 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
825 | 637 GetOrthancWebViewerJpegCommand* command) |
638 { | |
639 FetchCommand fetch(*this, receiver, command); | |
640 | |
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641 SetOrthancUrl(fetch, command->GetUri()); |
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642 fetch.AddHttpHeaders(command->GetHttpHeaders()); |
825 | 643 fetch.SetTimeout(command->GetTimeout()); |
644 | |
645 fetch.Execute(); | |
646 } | |
647 | |
648 | |
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649 void WebAssemblyOracle::Execute(boost::weak_ptr<IObserver> receiver, |
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650 ParseDicomFromWadoCommand* command) |
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651 { |
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652 std::auto_ptr<ParseDicomFromWadoCommand> protection(command); |
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653 |
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654 #if ORTHANC_ENABLE_DCMTK == 1 |
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655 if (dicomCache_.get()) |
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656 { |
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657 ParsedDicomCache::Reader reader(*dicomCache_, BUCKET_SOP, protection->GetSopInstanceUid()); |
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658 if (reader.IsValid() && |
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659 reader.HasPixelData()) |
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660 { |
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661 // Reuse the DICOM file from the cache |
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662 ParseDicomSuccessMessage message(*protection, reader.GetDicom(), |
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663 reader.GetFileSize(), reader.HasPixelData()); |
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664 EmitMessage(receiver, message); |
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665 return; |
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666 } |
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667 } |
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668 #endif |
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669 |
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670 switch (command->GetRestCommand().GetType()) |
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671 { |
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672 case IOracleCommand::Type_Http: |
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673 { |
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674 const HttpCommand& rest = |
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675 dynamic_cast<const HttpCommand&>(protection->GetRestCommand()); |
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676 |
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677 FetchCommand fetch(*this, receiver, protection.release()); |
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678 |
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679 fetch.SetMethod(rest.GetMethod()); |
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680 fetch.SetUrl(rest.GetUrl()); |
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681 fetch.AddHttpHeaders(rest.GetHttpHeaders()); |
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682 fetch.SetTimeout(rest.GetTimeout()); |
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683 |
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684 if (rest.GetMethod() == Orthanc::HttpMethod_Post || |
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685 rest.GetMethod() == Orthanc::HttpMethod_Put) |
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686 { |
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687 std::string body = rest.GetBody(); |
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688 fetch.SetBody(body); |
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689 } |
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690 |
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691 fetch.Execute(); |
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692 break; |
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693 } |
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694 |
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695 case IOracleCommand::Type_OrthancRestApi: |
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696 { |
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697 const OrthancRestApiCommand& rest = |
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698 dynamic_cast<const OrthancRestApiCommand&>(protection->GetRestCommand()); |
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699 |
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700 FetchCommand fetch(*this, receiver, protection.release()); |
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701 |
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702 fetch.SetMethod(rest.GetMethod()); |
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703 SetOrthancUrl(fetch, rest.GetUri()); |
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704 fetch.AddHttpHeaders(rest.GetHttpHeaders()); |
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705 fetch.SetTimeout(rest.GetTimeout()); |
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706 |
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707 if (rest.GetMethod() == Orthanc::HttpMethod_Post || |
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708 rest.GetMethod() == Orthanc::HttpMethod_Put) |
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709 { |
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710 std::string body = rest.GetBody(); |
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711 fetch.SetBody(body); |
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712 } |
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713 |
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714 fetch.Execute(); |
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715 break; |
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716 } |
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717 |
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718 default: |
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719 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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720 } |
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721 } |
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722 |
825 | 723 |
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724 bool WebAssemblyOracle::Schedule(boost::shared_ptr<IObserver> receiver, |
825 | 725 IOracleCommand* command) |
726 { | |
977
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727 LOG(TRACE) << "WebAssemblyOracle::Schedule : receiver = " |
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728 << std::hex << &receiver; |
977
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729 |
825 | 730 std::auto_ptr<IOracleCommand> protection(command); |
731 | |
732 if (command == NULL) | |
733 { | |
734 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
735 } | |
736 | |
737 switch (command->GetType()) | |
738 { | |
992
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739 case IOracleCommand::Type_Http: |
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740 Execute(receiver, dynamic_cast<HttpCommand*>(protection.release())); |
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741 break; |
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742 |
825 | 743 case IOracleCommand::Type_OrthancRestApi: |
744 Execute(receiver, dynamic_cast<OrthancRestApiCommand*>(protection.release())); | |
745 break; | |
746 | |
747 case IOracleCommand::Type_GetOrthancImage: | |
748 Execute(receiver, dynamic_cast<GetOrthancImageCommand*>(protection.release())); | |
749 break; | |
750 | |
751 case IOracleCommand::Type_GetOrthancWebViewerJpeg: | |
752 break; | |
753 | |
754 case IOracleCommand::Type_Sleep: | |
755 { | |
756 unsigned int timeoutMS = dynamic_cast<SleepOracleCommand*>(command)->GetDelay(); | |
757 emscripten_set_timeout(TimeoutContext::Callback, timeoutMS, | |
758 new TimeoutContext(*this, receiver, protection.release())); | |
759 break; | |
760 } | |
761 | |
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762 case IOracleCommand::Type_ParseDicomFromWado: |
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763 #if ORTHANC_ENABLE_DCMTK == 1 |
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764 Execute(receiver, dynamic_cast<ParseDicomFromWadoCommand*>(protection.release())); |
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765 #else |
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766 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented, |
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767 "DCMTK must be enabled to parse DICOM files"); |
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768 #endif |
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769 break; |
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770 |
825 | 771 default: |
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772 LOG(ERROR) << "Command type not implemented by the WebAssembly Oracle (in Schedule): " |
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773 << command->GetType(); |
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774 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
825 | 775 } |
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776 |
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777 return true; |
825 | 778 } |
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779 |
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780 |
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781 void WebAssemblyOracle::SetDicomCacheSize(size_t size) |
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782 { |
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783 #if ORTHANC_ENABLE_DCMTK == 1 |
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784 if (size == 0) |
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785 { |
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786 dicomCache_.reset(); |
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787 } |
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788 else |
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789 { |
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790 dicomCache_.reset(new ParsedDicomCache(size)); |
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791 } |
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792 #else |
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793 LOG(INFO) << "DCMTK support is disabled, the DICOM cache is disabled"; |
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794 #endif |
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795 } |
825 | 796 } |