Mercurial > hg > orthanc-stone
annotate Framework/Loaders/LoaderStateMachine.cpp @ 1224:37bc7f115f81 broker
integration mainline->broker
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Sat, 07 Dec 2019 18:45:37 +0100 |
| parents | a0a33e5ea5bb |
| children |
| rev | line source |
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| 815 | 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 "LoaderStateMachine.h" | |
| 23 | |
| 24 #include <Core/OrthancException.h> | |
| 25 | |
| 26 namespace OrthancStone | |
| 27 { | |
| 28 void LoaderStateMachine::State::Handle(const OrthancRestApiCommand::SuccessMessage& message) | |
| 29 { | |
| 30 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 31 } | |
| 32 | |
| 33 | |
| 34 void LoaderStateMachine::State::Handle(const GetOrthancImageCommand::SuccessMessage& message) | |
| 35 { | |
| 36 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 37 } | |
| 38 | |
| 39 | |
| 40 void LoaderStateMachine::State::Handle(const GetOrthancWebViewerJpegCommand::SuccessMessage& message) | |
| 41 { | |
| 42 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 43 } | |
| 44 | |
| 45 | |
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46 void LoaderStateMachine::Schedule(OracleCommandBase* command) |
| 815 | 47 { |
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48 LOG(TRACE) << "LoaderStateMachine(" << std::hex << this << std::dec << ")::Schedule()"; |
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49 |
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50 std::auto_ptr<OracleCommandBase> protection(command); |
| 815 | 51 |
| 52 if (command == NULL) | |
| 53 { | |
| 54 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 55 } | |
| 56 | |
| 57 if (!command->HasPayload()) | |
| 58 { | |
| 59 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange, | |
| 60 "The payload must contain the next state"); | |
| 61 } | |
| 62 pendingCommands_.push_back(protection.release()); | |
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63 |
| 815 | 64 Step(); |
| 65 } | |
| 66 | |
| 67 | |
| 68 void LoaderStateMachine::Start() | |
| 69 { | |
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70 LOG(TRACE) << "LoaderStateMachine(" << std::hex << this << std::dec << ")::Start()"; |
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71 |
| 815 | 72 if (active_) |
| 73 { | |
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74 LOG(TRACE) << "LoaderStateMachine::Start() called while active_ is true"; |
| 815 | 75 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 76 } | |
| 77 | |
| 78 active_ = true; | |
| 79 | |
| 80 for (size_t i = 0; i < simultaneousDownloads_; i++) | |
| 81 { | |
| 82 Step(); | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 | |
| 87 void LoaderStateMachine::Step() | |
| 88 { | |
| 89 if (!pendingCommands_.empty() && | |
| 90 activeCommands_ < simultaneousDownloads_) | |
| 91 { | |
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92 |
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93 IOracleCommand* nextCommand = pendingCommands_.front(); |
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94 |
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95 LOG(TRACE) << " LoaderStateMachine(" << std::hex << this << std::dec << |
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96 ")::Step(): activeCommands_ (" << activeCommands_ << |
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97 ") < simultaneousDownloads_ (" << simultaneousDownloads_ << |
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98 ") --> will Schedule command addr " << std::hex << nextCommand << std::dec; |
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99 |
| 1075 | 100 boost::shared_ptr<IObserver> observer(GetSharedObserver()); |
| 101 oracle_.Schedule(observer, nextCommand); | |
| 815 | 102 pendingCommands_.pop_front(); |
| 103 | |
| 104 activeCommands_++; | |
| 105 } | |
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106 else |
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107 { |
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108 LOG(TRACE) << " LoaderStateMachine(" << std::hex << this << std::dec << |
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109 ")::Step(): activeCommands_ (" << activeCommands_ << |
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110 ") >= simultaneousDownloads_ (" << simultaneousDownloads_ << |
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111 ") --> will NOT Schedule command"; |
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112 } |
| 815 | 113 } |
| 114 | |
| 115 | |
| 116 void LoaderStateMachine::Clear() | |
| 117 { | |
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118 LOG(TRACE) << "LoaderStateMachine(" << std::hex << this << std::dec << ")::Clear()"; |
| 815 | 119 for (PendingCommands::iterator it = pendingCommands_.begin(); |
| 120 it != pendingCommands_.end(); ++it) | |
| 121 { | |
| 122 delete *it; | |
| 123 } | |
| 124 | |
| 125 pendingCommands_.clear(); | |
| 126 } | |
| 127 | |
| 128 | |
| 129 void LoaderStateMachine::HandleExceptionMessage(const OracleCommandExceptionMessage& message) | |
| 130 { | |
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131 LOG(ERROR) << "LoaderStateMachine::HandleExceptionMessage: error in the state machine, stopping all processing"; |
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132 LOG(ERROR) << "Error: " << message.GetException().What() << " Details: " << |
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133 message.GetException().GetDetails(); |
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134 Clear(); |
| 815 | 135 } |
| 136 | |
| 137 template <typename T> | |
| 138 void LoaderStateMachine::HandleSuccessMessage(const T& message) | |
| 139 { | |
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140 if (activeCommands_ <= 0) { |
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141 LOG(ERROR) << "LoaderStateMachine(" << std::hex << this << std::dec << ")::HandleSuccessMessage : activeCommands_ should be > 0 but is: " << activeCommands_; |
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142 } |
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143 else { |
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144 activeCommands_--; |
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145 try |
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146 { |
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147 dynamic_cast<State&>(message.GetOrigin().GetPayload()).Handle(message); |
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148 Step(); |
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149 } |
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150 catch (Orthanc::OrthancException& e) |
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151 { |
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152 LOG(ERROR) << "Error in the state machine, stopping all processing: " << |
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153 e.What() << " Details: " << e.GetDetails(); |
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154 Clear(); |
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155 } |
| 815 | 156 } |
| 157 } | |
| 158 | |
| 159 | |
| 160 LoaderStateMachine::LoaderStateMachine(IOracle& oracle, | |
| 161 IObservable& oracleObservable) : | |
| 162 oracle_(oracle), | |
| 163 active_(false), | |
| 164 simultaneousDownloads_(4), | |
| 165 activeCommands_(0) | |
| 166 { | |
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167 LOG(TRACE) << "LoaderStateMachine(" << std::hex << this << std::dec << ")::LoaderStateMachine()"; |
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168 |
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169 // TODO => Move this out of constructor |
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170 Register<OrthancRestApiCommand::SuccessMessage>(oracleObservable, &LoaderStateMachine::HandleSuccessMessage); |
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171 Register<GetOrthancImageCommand::SuccessMessage>(oracleObservable, &LoaderStateMachine::HandleSuccessMessage); |
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172 Register<GetOrthancWebViewerJpegCommand::SuccessMessage>(oracleObservable, &LoaderStateMachine::HandleSuccessMessage); |
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173 Register<OracleCommandExceptionMessage>(oracleObservable, &LoaderStateMachine::HandleExceptionMessage); |
| 815 | 174 } |
| 175 | |
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176 LoaderStateMachine::~LoaderStateMachine() |
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177 { |
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178 LOG(TRACE) << "LoaderStateMachine(" << std::hex << this << std::dec << ")::~LoaderStateMachine()"; |
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179 Clear(); |
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180 } |
| 815 | 181 |
| 182 void LoaderStateMachine::SetSimultaneousDownloads(unsigned int count) | |
| 183 { | |
| 184 if (active_) | |
| 185 { | |
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186 LOG(ERROR) << "LoaderStateMachine::SetSimultaneousDownloads called while active_ is true"; |
| 815 | 187 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
| 188 } | |
| 189 else if (count == 0) | |
| 190 { | |
| 191 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 192 } | |
| 193 else | |
| 194 { | |
| 195 simultaneousDownloads_ = count; | |
| 196 } | |
| 197 } | |
| 198 } |