Mercurial > hg > orthanc-stone
annotate Framework/Loaders/LoaderStateMachine.cpp @ 879:12b591d5d63c am-dev
some Qt integration (wip)
| author | Alain Mazy <alain@mazy.be> |
|---|---|
| date | Fri, 05 Jul 2019 14:52:43 +0200 |
| parents | 47fc7919977d |
| children | a7351ad54960 |
| 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 | |
| 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 | |
| 46 void LoaderStateMachine::Schedule(OracleCommandWithPayload* command) | |
| 47 { | |
| 48 std::auto_ptr<OracleCommandWithPayload> protection(command); | |
| 49 | |
| 50 if (command == NULL) | |
| 51 { | |
| 52 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 53 } | |
| 54 | |
| 55 if (!command->HasPayload()) | |
| 56 { | |
| 57 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange, | |
| 58 "The payload must contain the next state"); | |
| 59 } | |
| 60 | |
| 61 pendingCommands_.push_back(protection.release()); | |
| 62 Step(); | |
| 63 } | |
| 64 | |
| 65 | |
| 66 void LoaderStateMachine::Start() | |
| 67 { | |
| 68 if (active_) | |
| 69 { | |
| 70 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 71 } | |
| 72 | |
| 73 active_ = true; | |
| 74 | |
| 75 for (size_t i = 0; i < simultaneousDownloads_; i++) | |
| 76 { | |
| 77 Step(); | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 | |
| 82 void LoaderStateMachine::Step() | |
| 83 { | |
| 84 if (!pendingCommands_.empty() && | |
| 85 activeCommands_ < simultaneousDownloads_) | |
| 86 { | |
| 87 oracle_.Schedule(*this, pendingCommands_.front()); | |
| 88 pendingCommands_.pop_front(); | |
| 89 | |
| 90 activeCommands_++; | |
| 91 } | |
| 92 } | |
| 93 | |
| 94 | |
| 95 void LoaderStateMachine::Clear() | |
| 96 { | |
| 97 for (PendingCommands::iterator it = pendingCommands_.begin(); | |
| 98 it != pendingCommands_.end(); ++it) | |
| 99 { | |
| 100 delete *it; | |
| 101 } | |
| 102 | |
| 103 pendingCommands_.clear(); | |
| 104 } | |
| 105 | |
| 106 | |
| 107 void LoaderStateMachine::HandleExceptionMessage(const OracleCommandExceptionMessage& message) | |
| 108 { | |
| 109 LOG(ERROR) << "Error in the state machine, stopping all processing"; | |
|
840
47fc7919977d
Added details on errors in LoaderStateMachine + dummy change in loader.cpp
Benjamin Golinvaux <bgo@osimis.io>
parents:
815
diff
changeset
|
110 LOG(ERROR) << "Error: " << message.GetException().What() << " Details: " << |
|
47fc7919977d
Added details on errors in LoaderStateMachine + dummy change in loader.cpp
Benjamin Golinvaux <bgo@osimis.io>
parents:
815
diff
changeset
|
111 message.GetException().GetDetails(); |
|
47fc7919977d
Added details on errors in LoaderStateMachine + dummy change in loader.cpp
Benjamin Golinvaux <bgo@osimis.io>
parents:
815
diff
changeset
|
112 Clear(); |
| 815 | 113 } |
| 114 | |
| 115 | |
| 116 template <typename T> | |
| 117 void LoaderStateMachine::HandleSuccessMessage(const T& message) | |
| 118 { | |
| 119 assert(activeCommands_ > 0); | |
| 120 activeCommands_--; | |
| 121 | |
| 122 try | |
| 123 { | |
| 124 dynamic_cast<State&>(message.GetOrigin().GetPayload()).Handle(message); | |
| 125 Step(); | |
| 126 } | |
| 127 catch (Orthanc::OrthancException& e) | |
| 128 { | |
|
840
47fc7919977d
Added details on errors in LoaderStateMachine + dummy change in loader.cpp
Benjamin Golinvaux <bgo@osimis.io>
parents:
815
diff
changeset
|
129 LOG(ERROR) << "Error in the state machine, stopping all processing: " << |
|
47fc7919977d
Added details on errors in LoaderStateMachine + dummy change in loader.cpp
Benjamin Golinvaux <bgo@osimis.io>
parents:
815
diff
changeset
|
130 e.What() << " Details: " << e.GetDetails(); |
| 815 | 131 Clear(); |
| 132 } | |
| 133 } | |
| 134 | |
| 135 | |
| 136 LoaderStateMachine::LoaderStateMachine(IOracle& oracle, | |
| 137 IObservable& oracleObservable) : | |
| 138 IObserver(oracleObservable.GetBroker()), | |
| 139 oracle_(oracle), | |
| 140 active_(false), | |
| 141 simultaneousDownloads_(4), | |
| 142 activeCommands_(0) | |
| 143 { | |
| 144 oracleObservable.RegisterObserverCallback( | |
| 145 new Callable<LoaderStateMachine, OrthancRestApiCommand::SuccessMessage> | |
| 146 (*this, &LoaderStateMachine::HandleSuccessMessage)); | |
| 147 | |
| 148 oracleObservable.RegisterObserverCallback( | |
| 149 new Callable<LoaderStateMachine, GetOrthancImageCommand::SuccessMessage> | |
| 150 (*this, &LoaderStateMachine::HandleSuccessMessage)); | |
| 151 | |
| 152 oracleObservable.RegisterObserverCallback( | |
| 153 new Callable<LoaderStateMachine, GetOrthancWebViewerJpegCommand::SuccessMessage> | |
| 154 (*this, &LoaderStateMachine::HandleSuccessMessage)); | |
| 155 | |
| 156 oracleObservable.RegisterObserverCallback( | |
| 157 new Callable<LoaderStateMachine, OracleCommandExceptionMessage> | |
| 158 (*this, &LoaderStateMachine::HandleExceptionMessage)); | |
| 159 } | |
| 160 | |
| 161 | |
| 162 void LoaderStateMachine::SetSimultaneousDownloads(unsigned int count) | |
| 163 { | |
| 164 if (active_) | |
| 165 { | |
| 166 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 167 } | |
| 168 else if (count == 0) | |
| 169 { | |
| 170 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 171 } | |
| 172 else | |
| 173 { | |
| 174 simultaneousDownloads_ = count; | |
| 175 } | |
| 176 } | |
| 177 } |