Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Loaders/LoaderStateMachine.cpp @ 1534:0443d04416d9
don't discard the windowing altered by mouse
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 07 Aug 2020 21:48:43 +0200 |
| parents | 244ad1e4e76a |
| children | 85e117739eca |
| rev | line source |
|---|---|
| 815 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
|
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 815 | 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 "LoaderStateMachine.h" | |
| 23 | |
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24 #include "../Loaders/ILoadersContext.h" |
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26 #include <OrthancException.h> |
| 815 | 27 |
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28 namespace OrthancStone |
| 815 | 29 { |
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30 void LoaderStateMachine::State::Handle(const OrthancStone::OrthancRestApiCommand::SuccessMessage& message) |
| 815 | 31 { |
| 32 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 33 } | |
| 34 | |
| 35 | |
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36 void LoaderStateMachine::State::Handle(const OrthancStone::GetOrthancImageCommand::SuccessMessage& message) |
| 815 | 37 { |
| 38 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 39 } | |
| 40 | |
| 41 | |
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42 void LoaderStateMachine::State::Handle(const OrthancStone::GetOrthancWebViewerJpegCommand::SuccessMessage& message) |
| 815 | 43 { |
| 44 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 45 } | |
| 46 | |
| 47 | |
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48 void LoaderStateMachine::Schedule(OrthancStone::OracleCommandBase* command) |
| 815 | 49 { |
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50 LOG(TRACE) << "LoaderStateMachine(" << std::hex << this << std::dec << ")::Schedule()"; |
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51 |
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52 std::unique_ptr<OrthancStone::OracleCommandBase> protection(command); |
| 815 | 53 |
| 54 if (command == NULL) | |
| 55 { | |
| 56 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 57 } | |
| 58 | |
| 59 if (!command->HasPayload()) | |
| 60 { | |
| 61 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange, | |
| 62 "The payload must contain the next state"); | |
| 63 } | |
| 64 pendingCommands_.push_back(protection.release()); | |
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65 |
| 815 | 66 Step(); |
| 67 } | |
| 68 | |
| 69 | |
| 70 void LoaderStateMachine::Start() | |
| 71 { | |
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72 LOG(TRACE) << "LoaderStateMachine(" << std::hex << this << std::dec << ")::Start()"; |
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73 |
| 815 | 74 if (active_) |
| 75 { | |
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76 LOG(TRACE) << "LoaderStateMachine::Start() called while active_ is true"; |
| 815 | 77 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 78 } | |
| 79 | |
| 80 active_ = true; | |
| 81 | |
| 82 for (size_t i = 0; i < simultaneousDownloads_; i++) | |
| 83 { | |
| 84 Step(); | |
| 85 } | |
| 86 } | |
| 87 | |
| 88 | |
| 89 void LoaderStateMachine::Step() | |
| 90 { | |
| 91 if (!pendingCommands_.empty() && | |
| 92 activeCommands_ < simultaneousDownloads_) | |
| 93 { | |
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94 |
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95 OrthancStone::IOracleCommand* nextCommand = pendingCommands_.front(); |
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96 |
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97 LOG(TRACE) << " LoaderStateMachine(" << std::hex << this << std::dec << |
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98 ")::Step(): activeCommands_ (" << activeCommands_ << |
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99 ") < simultaneousDownloads_ (" << simultaneousDownloads_ << |
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100 ") --> will Schedule command addr " << std::hex << nextCommand << std::dec; |
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101 |
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102 { |
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103 std::unique_ptr<OrthancStone::ILoadersContext::ILock> lock(loadersContext_.Lock()); |
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104 boost::shared_ptr<IObserver> observer(GetSharedObserver()); |
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105 lock->Schedule(observer, 0, nextCommand); // TODO: priority! |
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106 } |
| 815 | 107 pendingCommands_.pop_front(); |
| 108 | |
| 109 activeCommands_++; | |
| 110 } | |
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111 else |
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112 { |
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113 LOG(TRACE) << " LoaderStateMachine(" << std::hex << this << std::dec << |
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114 ")::Step(): activeCommands_ (" << activeCommands_ << |
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115 ") >= simultaneousDownloads_ (" << simultaneousDownloads_ << |
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116 ") --> will NOT Schedule command"; |
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117 } |
| 815 | 118 } |
| 119 | |
| 120 | |
| 121 void LoaderStateMachine::Clear() | |
| 122 { | |
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123 LOG(TRACE) << "LoaderStateMachine(" << std::hex << this << std::dec << ")::Clear()"; |
| 815 | 124 for (PendingCommands::iterator it = pendingCommands_.begin(); |
| 125 it != pendingCommands_.end(); ++it) | |
| 126 { | |
| 127 delete *it; | |
| 128 } | |
| 129 | |
| 130 pendingCommands_.clear(); | |
| 131 } | |
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132 |
| 815 | 133 |
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134 void LoaderStateMachine::HandleExceptionMessage(const OrthancStone::OracleCommandExceptionMessage& message) |
| 815 | 135 { |
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136 LOG(ERROR) << "LoaderStateMachine::HandleExceptionMessage: error in the state machine, stopping all processing"; |
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137 LOG(ERROR) << "Error: " << message.GetException().What() << " Details: " << |
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138 message.GetException().GetDetails(); |
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139 Clear(); |
| 815 | 140 } |
| 141 | |
| 142 template <typename T> | |
| 143 void LoaderStateMachine::HandleSuccessMessage(const T& message) | |
| 144 { | |
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145 if (activeCommands_ <= 0) { |
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146 LOG(ERROR) << "LoaderStateMachine(" << std::hex << this << std::dec << ")::HandleSuccessMessage : activeCommands_ should be > 0 but is: " << activeCommands_; |
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147 } |
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148 else { |
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149 activeCommands_--; |
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150 try |
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151 { |
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152 dynamic_cast<State&>(message.GetOrigin().GetPayload()).Handle(message); |
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153 Step(); |
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154 } |
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155 catch (Orthanc::OrthancException& e) |
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156 { |
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157 LOG(ERROR) << "Error in the state machine, stopping all processing: " << |
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158 e.What() << " Details: " << e.GetDetails(); |
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159 Clear(); |
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160 } |
| 815 | 161 } |
| 162 } | |
| 163 | |
| 164 | |
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165 LoaderStateMachine::LoaderStateMachine( |
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166 OrthancStone::ILoadersContext& loadersContext) |
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167 : loadersContext_(loadersContext) |
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168 , active_(false) |
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169 , simultaneousDownloads_(4) |
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170 , activeCommands_(0) |
| 815 | 171 { |
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172 using OrthancStone::ILoadersContext; |
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173 |
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174 LOG(TRACE) |
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175 << "LoaderStateMachine(" << std::hex << this |
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176 << std::dec << ")::LoaderStateMachine()"; |
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177 } |
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178 |
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179 void LoaderStateMachine::PostConstructor() |
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180 { |
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181 std::unique_ptr<OrthancStone::ILoadersContext::ILock> |
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182 lock(loadersContext_.Lock()); |
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183 |
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184 OrthancStone::IObservable& observable = lock->GetOracleObservable(); |
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185 |
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186 // TODO => Move this out of constructor |
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187 Register<OrthancStone::OrthancRestApiCommand::SuccessMessage>( |
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188 observable, &LoaderStateMachine::HandleSuccessMessage); |
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189 Register<OrthancStone::GetOrthancImageCommand::SuccessMessage>( |
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190 observable, &LoaderStateMachine::HandleSuccessMessage); |
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191 Register<OrthancStone::GetOrthancWebViewerJpegCommand::SuccessMessage>( |
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192 observable, &LoaderStateMachine::HandleSuccessMessage); |
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193 Register<OrthancStone::OracleCommandExceptionMessage>( |
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194 observable, &LoaderStateMachine::HandleExceptionMessage); |
| 815 | 195 } |
| 196 | |
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197 LoaderStateMachine::~LoaderStateMachine() |
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198 { |
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199 LOG(TRACE) << "LoaderStateMachine(" << std::hex << this << std::dec << ")::~LoaderStateMachine()"; |
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200 Clear(); |
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201 } |
| 815 | 202 |
| 203 void LoaderStateMachine::SetSimultaneousDownloads(unsigned int count) | |
| 204 { | |
| 205 if (active_) | |
| 206 { | |
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207 LOG(ERROR) << "LoaderStateMachine::SetSimultaneousDownloads called while active_ is true"; |
| 815 | 208 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 209 } | |
| 210 else if (count == 0) | |
| 211 { | |
| 212 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 213 } | |
| 214 else | |
| 215 { | |
| 216 simultaneousDownloads_ = count; | |
| 217 } | |
| 218 } | |
| 219 } |