Mercurial > hg > orthanc-webviewer
annotate Plugin/Plugin.cpp @ 75:e15a59a4b4d4
Fix possible deadlock with other plugins in OnChangeCallback()
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 23 Sep 2015 13:33:07 +0200 |
| parents | ab5218c18b7a |
| children | abdde1dfb3eb |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU Affero General Public License | |
| 8 * as published by the Free Software Foundation, either version 3 of | |
| 9 * the License, or (at your option) any later version. | |
| 10 * | |
| 11 * This program is distributed in the hope that it will be useful, but | |
| 12 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * Affero General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU Affero General Public License | |
| 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 18 **/ | |
| 19 | |
| 20 | |
| 21 #include <boost/thread.hpp> | |
| 22 #include <boost/lexical_cast.hpp> | |
| 23 #include <EmbeddedResources.h> | |
|
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24 #include <boost/filesystem.hpp> |
| 0 | 25 |
| 26 | 26 #include "../Orthanc/Core/OrthancException.h" |
| 0 | 27 #include "ViewerToolbox.h" |
| 28 #include "ViewerPrefetchPolicy.h" | |
| 29 #include "DecodedImageAdapter.h" | |
| 30 #include "InstanceInformationAdapter.h" | |
| 31 #include "SeriesInformationAdapter.h" | |
| 32 | |
| 33 | |
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34 #if (ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER >= 9 && ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER >= 5) |
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35 # define RETURN_TYPE OrthancPluginErrorCode |
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36 # define RETURN_SUCCESS OrthancPluginErrorCode_Success |
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37 # define RETURN_FAILURE OrthancPluginErrorCode_Plugin |
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38 #else |
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39 # define RETURN_TYPE int32_t |
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40 # define RETURN_SUCCESS 0 |
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41 # define RETURN_FAILURE -1 |
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42 #endif |
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43 |
| 0 | 44 |
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45 static OrthancPluginContext* context_ = NULL; |
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46 |
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47 |
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48 |
| 0 | 49 class CacheContext |
| 50 { | |
| 51 private: | |
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52 class DynamicString : public Orthanc::IDynamicObject |
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53 { |
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54 private: |
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55 std::string value_; |
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56 |
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57 public: |
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58 DynamicString(const char* value) : value_(value) |
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59 { |
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60 } |
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61 |
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62 const std::string& GetValue() const |
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63 { |
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64 return value_; |
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65 } |
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66 }; |
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67 |
| 58 | 68 Orthanc::FilesystemStorage storage_; |
| 69 Orthanc::SQLite::Connection db_; | |
| 70 | |
| 0 | 71 std::auto_ptr<OrthancPlugins::CacheManager> cache_; |
| 72 std::auto_ptr<OrthancPlugins::CacheScheduler> scheduler_; | |
| 73 | |
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74 Orthanc::SharedMessageQueue newInstances_; |
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75 bool stop_; |
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76 boost::thread newInstancesThread_; |
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77 |
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78 |
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79 static void NewInstancesThread(CacheContext* cache) |
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80 { |
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81 while (!cache->stop_) |
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82 { |
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83 std::auto_ptr<Orthanc::IDynamicObject> obj(cache->newInstances_.Dequeue(100)); |
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84 if (obj.get() != NULL) |
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85 { |
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86 const std::string& instanceId = dynamic_cast<DynamicString&>(*obj).GetValue(); |
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87 printf("[%s]\n", instanceId.c_str()); |
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88 |
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89 // On the reception of a new instance, precompute its spatial position |
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90 cache->GetScheduler().Prefetch(OrthancPlugins::CacheBundle_InstanceInformation, instanceId); |
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91 |
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92 // Indalidate the parent series of the instance |
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93 std::string uri = "/instances/" + std::string(instanceId); |
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94 Json::Value instance; |
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95 if (OrthancPlugins::GetJsonFromOrthanc(instance, context_, uri)) |
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96 { |
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97 std::string seriesId = instance["ParentSeries"].asString(); |
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98 cache->GetScheduler().Invalidate(OrthancPlugins::CacheBundle_SeriesInformation, seriesId); |
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99 } |
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100 } |
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101 } |
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102 } |
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103 |
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104 |
| 0 | 105 public: |
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106 CacheContext(const std::string& path) : storage_(path), stop_(false) |
| 0 | 107 { |
| 108 boost::filesystem::path p(path); | |
| 58 | 109 db_.Open((p / "cache.db").string()); |
| 0 | 110 |
| 58 | 111 cache_.reset(new OrthancPlugins::CacheManager(db_, storage_)); |
| 0 | 112 //cache_->SetSanityCheckEnabled(true); // For debug |
| 113 | |
| 114 scheduler_.reset(new OrthancPlugins::CacheScheduler(*cache_, 100)); | |
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115 |
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116 newInstancesThread_ = boost::thread(NewInstancesThread, this); |
| 0 | 117 } |
| 118 | |
| 58 | 119 ~CacheContext() |
| 120 { | |
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121 stop_ = true; |
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122 if (newInstancesThread_.joinable()) |
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123 { |
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124 newInstancesThread_.join(); |
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125 } |
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126 |
| 58 | 127 scheduler_.reset(NULL); |
| 128 cache_.reset(NULL); | |
| 129 } | |
| 130 | |
| 0 | 131 OrthancPlugins::CacheScheduler& GetScheduler() |
| 132 { | |
| 133 return *scheduler_; | |
| 134 } | |
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135 |
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136 void SignalNewInstance(const char* instanceId) |
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137 { |
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138 newInstances_.Enqueue(new DynamicString(instanceId)); |
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139 } |
| 0 | 140 }; |
| 141 | |
| 142 | |
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143 |
| 0 | 144 static CacheContext* cache_ = NULL; |
| 145 | |
| 146 | |
| 147 | |
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148 static RETURN_TYPE OnChangeCallback(OrthancPluginChangeType changeType, |
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149 OrthancPluginResourceType resourceType, |
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150 const char* resourceId) |
| 0 | 151 { |
| 152 try | |
| 153 { | |
| 154 if (changeType == OrthancPluginChangeType_NewInstance && | |
| 155 resourceType == OrthancPluginResourceType_Instance) | |
| 156 { | |
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157 cache_->SignalNewInstance(resourceId); |
| 0 | 158 } |
| 159 | |
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160 return RETURN_SUCCESS; |
| 0 | 161 } |
| 162 catch (std::runtime_error& e) | |
| 163 { | |
| 164 OrthancPluginLogError(context_, e.what()); | |
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165 return RETURN_SUCCESS; // Ignore error |
| 0 | 166 } |
| 167 } | |
| 168 | |
| 169 | |
| 170 | |
| 171 template <enum OrthancPlugins::CacheBundle bundle> | |
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172 static RETURN_TYPE ServeCache(OrthancPluginRestOutput* output, |
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173 const char* url, |
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174 const OrthancPluginHttpRequest* request) |
| 0 | 175 { |
| 176 try | |
| 177 { | |
| 178 if (request->method != OrthancPluginHttpMethod_Get) | |
| 179 { | |
| 180 OrthancPluginSendMethodNotAllowed(context_, output, "GET"); | |
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181 return RETURN_SUCCESS; |
| 0 | 182 } |
| 183 | |
| 184 const std::string id = request->groups[0]; | |
| 185 std::string content; | |
| 186 | |
| 187 if (cache_->GetScheduler().Access(content, bundle, id)) | |
| 188 { | |
| 189 OrthancPluginAnswerBuffer(context_, output, content.c_str(), content.size(), "application/json"); | |
| 190 } | |
| 191 else | |
| 192 { | |
| 193 OrthancPluginSendHttpStatusCode(context_, output, 404); | |
| 194 } | |
| 195 | |
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196 return RETURN_SUCCESS; |
| 0 | 197 } |
| 198 catch (Orthanc::OrthancException& e) | |
| 199 { | |
| 200 OrthancPluginLogError(context_, e.What()); | |
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201 return RETURN_FAILURE; |
| 0 | 202 } |
| 203 catch (std::runtime_error& e) | |
| 204 { | |
| 205 OrthancPluginLogError(context_, e.what()); | |
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206 return RETURN_FAILURE; |
| 0 | 207 } |
| 208 catch (boost::bad_lexical_cast&) | |
| 209 { | |
| 210 OrthancPluginLogError(context_, "Bad lexical cast"); | |
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211 return RETURN_FAILURE; |
| 0 | 212 } |
| 213 } | |
| 214 | |
| 215 | |
| 216 | |
| 217 | |
| 218 #if ORTHANC_STANDALONE == 0 | |
| 219 static int32_t ServeWebViewer(OrthancPluginRestOutput* output, | |
| 220 const char* url, | |
| 221 const OrthancPluginHttpRequest* request) | |
| 222 { | |
| 223 if (request->method != OrthancPluginHttpMethod_Get) | |
| 224 { | |
| 225 OrthancPluginSendMethodNotAllowed(context_, output, "GET"); | |
| 226 return 0; | |
| 227 } | |
| 228 | |
| 229 const std::string path = std::string(WEB_VIEWER_PATH) + std::string(request->groups[0]); | |
| 230 const char* mime = OrthancPlugins::GetMimeType(path); | |
| 231 | |
| 232 std::string s; | |
| 233 if (OrthancPlugins::ReadFile(s, path)) | |
| 234 { | |
| 235 const char* resource = s.size() ? s.c_str() : NULL; | |
| 236 OrthancPluginAnswerBuffer(context_, output, resource, s.size(), mime); | |
| 237 } | |
| 238 else | |
| 239 { | |
| 240 std::string s = "Inexistent file in served folder: " + path; | |
| 241 OrthancPluginLogError(context_, s.c_str()); | |
| 242 OrthancPluginSendHttpStatusCode(context_, output, 404); | |
| 243 } | |
| 244 | |
| 245 return 0; | |
| 246 } | |
| 247 #endif | |
| 248 | |
| 249 | |
| 250 | |
| 31 | 251 template <enum Orthanc::EmbeddedResources::DirectoryResourceId folder> |
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252 static RETURN_TYPE ServeEmbeddedFolder(OrthancPluginRestOutput* output, |
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253 const char* url, |
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254 const OrthancPluginHttpRequest* request) |
| 0 | 255 { |
| 256 if (request->method != OrthancPluginHttpMethod_Get) | |
| 257 { | |
| 258 OrthancPluginSendMethodNotAllowed(context_, output, "GET"); | |
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259 return RETURN_SUCCESS; |
| 0 | 260 } |
| 261 | |
| 262 std::string path = "/" + std::string(request->groups[0]); | |
| 263 const char* mime = OrthancPlugins::GetMimeType(path); | |
| 264 | |
| 265 try | |
| 266 { | |
| 267 std::string s; | |
| 31 | 268 Orthanc::EmbeddedResources::GetDirectoryResource(s, folder, path.c_str()); |
| 0 | 269 |
| 270 const char* resource = s.size() ? s.c_str() : NULL; | |
| 271 OrthancPluginAnswerBuffer(context_, output, resource, s.size(), mime); | |
| 272 | |
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273 return RETURN_SUCCESS; |
| 0 | 274 } |
| 275 catch (std::runtime_error&) | |
| 276 { | |
| 277 std::string s = "Unknown static resource in plugin: " + std::string(request->groups[0]); | |
| 278 OrthancPluginLogError(context_, s.c_str()); | |
| 279 OrthancPluginSendHttpStatusCode(context_, output, 404); | |
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280 return RETURN_SUCCESS; |
| 0 | 281 } |
| 282 } | |
| 283 | |
| 284 | |
| 285 | |
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286 static RETURN_TYPE IsStableSeries(OrthancPluginRestOutput* output, |
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287 const char* url, |
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288 const OrthancPluginHttpRequest* request) |
| 19 | 289 { |
| 290 try | |
| 291 { | |
| 292 if (request->method != OrthancPluginHttpMethod_Get) | |
| 293 { | |
| 294 OrthancPluginSendMethodNotAllowed(context_, output, "GET"); | |
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295 return RETURN_SUCCESS; |
| 19 | 296 } |
| 297 | |
| 298 const std::string id = request->groups[0]; | |
| 299 Json::Value series; | |
| 300 | |
| 301 if (OrthancPlugins::GetJsonFromOrthanc(series, context_, "/series/" + id) && | |
| 302 series.type() == Json::objectValue) | |
| 303 { | |
| 304 bool value = (series["IsStable"].asBool() || | |
| 305 series["Status"].asString() == "Complete"); | |
| 306 std::string answer = value ? "true" : "false"; | |
| 307 OrthancPluginAnswerBuffer(context_, output, answer.c_str(), answer.size(), "application/json"); | |
| 308 } | |
| 309 else | |
| 310 { | |
| 311 OrthancPluginSendHttpStatusCode(context_, output, 404); | |
| 312 } | |
| 313 | |
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314 return RETURN_SUCCESS; |
| 19 | 315 } |
| 316 catch (Orthanc::OrthancException& e) | |
| 317 { | |
| 318 OrthancPluginLogError(context_, e.What()); | |
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319 return RETURN_FAILURE; |
| 19 | 320 } |
| 321 catch (std::runtime_error& e) | |
| 322 { | |
| 323 OrthancPluginLogError(context_, e.what()); | |
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324 return RETURN_FAILURE; |
| 19 | 325 } |
| 326 catch (boost::bad_lexical_cast&) | |
| 327 { | |
| 328 OrthancPluginLogError(context_, "Bad lexical cast"); | |
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329 return RETURN_FAILURE; |
| 19 | 330 } |
| 331 } | |
| 332 | |
| 0 | 333 |
| 334 extern "C" | |
| 335 { | |
| 336 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context) | |
| 337 { | |
| 338 using namespace OrthancPlugins; | |
| 339 | |
| 340 context_ = context; | |
| 341 OrthancPluginLogWarning(context_, "Initializing the Web viewer"); | |
| 342 | |
| 343 | |
| 344 /* Check the version of the Orthanc core */ | |
| 345 if (OrthancPluginCheckVersion(context_) == 0) | |
| 346 { | |
| 347 char info[1024]; | |
| 348 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin", | |
| 349 context_->orthancVersion, | |
| 350 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER, | |
| 351 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER, | |
| 352 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER); | |
| 353 OrthancPluginLogError(context_, info); | |
| 354 return -1; | |
| 355 } | |
| 356 | |
| 357 OrthancPluginSetDescription(context_, "Provides a Web viewer of DICOM series within Orthanc."); | |
| 358 | |
| 359 | |
| 360 /* By default, use half of the available processing cores for the decoding of DICOM images */ | |
| 361 int decodingThreads = boost::thread::hardware_concurrency() / 2; | |
| 362 if (decodingThreads == 0) | |
| 363 { | |
| 364 decodingThreads = 1; | |
| 365 } | |
| 366 | |
| 367 | |
| 368 try | |
| 369 { | |
| 370 /* Read the configuration of the Web viewer */ | |
| 371 Json::Value configuration; | |
| 372 if (!ReadConfiguration(configuration, context)) | |
| 373 { | |
| 374 OrthancPluginLogError(context_, "Unable to read the configuration file of Orthanc"); | |
| 375 return -1; | |
| 376 } | |
| 377 | |
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378 // By default, the cache of the Web viewer is located inside the |
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379 // "StorageDirectory" of Orthanc |
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380 boost::filesystem::path cachePath = GetStringValue(configuration, "StorageDirectory", "."); |
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381 cachePath /= "WebViewerCache"; |
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382 int cacheSize = 100; // By default, a cache of 100 MB is used |
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383 |
| 0 | 384 if (configuration.isMember("WebViewer")) |
| 385 { | |
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386 std::string key = "CachePath"; |
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387 if (!configuration["WebViewer"].isMember(key)) |
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388 { |
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389 // For backward compatibility with the initial release of the Web viewer |
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390 key = "Cache"; |
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391 } |
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392 |
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393 cachePath = GetStringValue(configuration["WebViewer"], key, cachePath.string()); |
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394 cacheSize = GetIntegerValue(configuration["WebViewer"], "CacheSize", cacheSize); |
| 0 | 395 decodingThreads = GetIntegerValue(configuration["WebViewer"], "Threads", decodingThreads); |
| 396 } | |
| 397 | |
| 398 std::string message = ("Web viewer using " + boost::lexical_cast<std::string>(decodingThreads) + | |
| 399 " threads for the decoding of the DICOM images"); | |
| 400 OrthancPluginLogWarning(context_, message.c_str()); | |
| 401 | |
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402 if (decodingThreads <= 0 || |
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403 cacheSize <= 0) |
| 0 | 404 { |
| 405 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 406 } | |
| 407 | |
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408 message = "Storing the cache of the Web viewer in folder: " + cachePath.string(); |
| 0 | 409 OrthancPluginLogWarning(context_, message.c_str()); |
| 410 | |
| 411 | |
| 412 /* Create the cache */ | |
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413 cache_ = new CacheContext(cachePath.string()); |
| 0 | 414 cache_->GetScheduler().RegisterPolicy(new ViewerPrefetchPolicy(context_)); |
| 415 cache_->GetScheduler().Register(CacheBundle_SeriesInformation, | |
| 416 new SeriesInformationAdapter(context_, cache_->GetScheduler()), 1); | |
| 417 cache_->GetScheduler().Register(CacheBundle_InstanceInformation, | |
| 418 new InstanceInformationAdapter(context_), 1); | |
| 419 cache_->GetScheduler().Register(CacheBundle_DecodedImage, | |
| 420 new DecodedImageAdapter(context_), decodingThreads); | |
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421 |
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422 |
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423 /* Set the quotas */ |
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424 cache_->GetScheduler().SetQuota(CacheBundle_SeriesInformation, 1000, 0); // Keep info about 1000 series |
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425 cache_->GetScheduler().SetQuota(CacheBundle_InstanceInformation, 10000, 0); // Keep info about 10,000 instances |
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426 |
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427 message = "Web viewer using a cache of " + boost::lexical_cast<std::string>(cacheSize) + " MB"; |
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428 OrthancPluginLogWarning(context_, message.c_str()); |
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429 |
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430 cache_->GetScheduler().SetQuota(CacheBundle_DecodedImage, 0, static_cast<uint64_t>(cacheSize) * 1024 * 1024); |
| 0 | 431 } |
| 432 catch (std::runtime_error& e) | |
| 433 { | |
| 434 OrthancPluginLogError(context_, e.what()); | |
| 435 return -1; | |
| 436 } | |
| 437 catch (Orthanc::OrthancException& e) | |
| 438 { | |
| 439 OrthancPluginLogError(context_, e.What()); | |
| 440 return -1; | |
| 441 } | |
| 442 | |
| 443 | |
| 444 /* Install the callbacks */ | |
| 445 OrthancPluginRegisterRestCallback(context_, "/web-viewer/series/(.*)", ServeCache<CacheBundle_SeriesInformation>); | |
| 19 | 446 OrthancPluginRegisterRestCallback(context_, "/web-viewer/is-stable-series/(.*)", IsStableSeries); |
| 0 | 447 OrthancPluginRegisterRestCallback(context_, "/web-viewer/instances/(.*)", ServeCache<CacheBundle_DecodedImage>); |
| 31 | 448 OrthancPluginRegisterRestCallback(context, "/web-viewer/libs/(.*)", ServeEmbeddedFolder<Orthanc::EmbeddedResources::JAVASCRIPT_LIBS>); |
| 0 | 449 |
| 450 #if ORTHANC_STANDALONE == 1 | |
| 31 | 451 OrthancPluginRegisterRestCallback(context, "/web-viewer/app/(.*)", ServeEmbeddedFolder<Orthanc::EmbeddedResources::WEB_VIEWER>); |
| 0 | 452 #else |
| 453 OrthancPluginRegisterRestCallback(context, "/web-viewer/app/(.*)", ServeWebViewer); | |
| 454 #endif | |
| 455 | |
| 456 OrthancPluginRegisterOnChangeCallback(context, OnChangeCallback); | |
| 457 | |
| 458 | |
| 459 /* Extend the default Orthanc Explorer with custom JavaScript */ | |
| 460 std::string explorer; | |
| 31 | 461 Orthanc::EmbeddedResources::GetFileResource(explorer, Orthanc::EmbeddedResources::ORTHANC_EXPLORER); |
| 0 | 462 OrthancPluginExtendOrthancExplorer(context_, explorer.c_str()); |
| 463 | |
| 464 return 0; | |
| 465 } | |
| 466 | |
| 467 | |
| 468 ORTHANC_PLUGINS_API void OrthancPluginFinalize() | |
| 469 { | |
| 470 OrthancPluginLogWarning(context_, "Finalizing the Web viewer"); | |
| 471 | |
| 472 if (cache_ != NULL) | |
| 473 { | |
| 474 delete cache_; | |
| 475 cache_ = NULL; | |
| 476 } | |
| 477 } | |
| 478 | |
| 479 | |
| 480 ORTHANC_PLUGINS_API const char* OrthancPluginGetName() | |
| 481 { | |
| 482 return "web-viewer"; | |
| 483 } | |
| 484 | |
| 485 | |
| 486 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion() | |
| 487 { | |
| 12 | 488 return ORTHANC_WEBVIEWER_VERSION; |
| 0 | 489 } |
| 490 } |