Mercurial > hg > orthanc-stone
annotate Framework/Loaders/LoaderStateMachine.h @ 1444:687457d4018f loader-injection-feature
Getter for slice processor
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Tue, 26 May 2020 12:11:18 +0200 |
parents | f4a06ad1580b |
children | 30deba7bc8e2 |
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 | |
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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 #pragma once | |
23 | |
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24 #include "../Messages/IObservable.h" |
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25 #include "../Messages/ObserverBase.h" |
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26 #include "../Oracle/GetOrthancImageCommand.h" |
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27 #include "../Oracle/GetOrthancWebViewerJpegCommand.h" |
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28 #include "../Oracle/IOracle.h" |
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29 #include "../Oracle/OracleCommandExceptionMessage.h" |
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30 #include "../Oracle/OrthancRestApiCommand.h" |
815 | 31 |
32 #include <Core/IDynamicObject.h> | |
33 | |
34 #include <list> | |
35 | |
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36 namespace OrthancStone |
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37 { |
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38 class ILoadersContext; |
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39 |
815 | 40 /** |
41 This class is supplied with Oracle commands and will schedule up to | |
42 simultaneousDownloads_ of them at the same time, then will schedule the | |
43 rest once slots become available. It is used, a.o., by the | |
44 OrtancMultiframeVolumeLoader class. | |
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45 |
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46 To use it, you need to create commands that derive from State. |
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47 |
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48 You need to initialize them with the object that must be called when |
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49 an answer is received. |
815 | 50 */ |
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51 |
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52 class LoaderStateMachine : public OrthancStone::ObserverBase<LoaderStateMachine> |
815 | 53 { |
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54 public: |
815 | 55 class State : public Orthanc::IDynamicObject |
56 { | |
57 private: | |
58 LoaderStateMachine& that_; | |
59 | |
60 public: | |
61 State(LoaderStateMachine& that) : | |
62 that_(that) | |
63 { | |
64 } | |
65 | |
66 State(const State& currentState) : | |
67 that_(currentState.that_) | |
68 { | |
69 } | |
70 | |
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71 void Schedule(OrthancStone::OracleCommandBase* command) const |
815 | 72 { |
73 that_.Schedule(command); | |
74 } | |
75 | |
76 template <typename T> | |
77 T& GetLoader() const | |
78 { | |
79 return dynamic_cast<T&>(that_); | |
80 } | |
81 | |
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82 virtual void Handle(const OrthancStone::OrthancRestApiCommand::SuccessMessage& message); |
815 | 83 |
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84 virtual void Handle(const OrthancStone::GetOrthancImageCommand::SuccessMessage& message); |
815 | 85 |
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86 virtual void Handle(const OrthancStone::GetOrthancWebViewerJpegCommand::SuccessMessage& message); |
815 | 87 }; |
88 | |
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89 void Schedule(OrthancStone::OracleCommandBase* command); |
815 | 90 |
91 void Start(); | |
92 | |
93 private: | |
94 void Step(); | |
95 | |
96 void Clear(); | |
97 | |
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98 void HandleExceptionMessage(const OrthancStone::OracleCommandExceptionMessage& message); |
815 | 99 |
100 template <typename T> | |
101 void HandleSuccessMessage(const T& message); | |
102 | |
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103 typedef std::list<OrthancStone::IOracleCommand*> PendingCommands; |
815 | 104 |
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105 OrthancStone::ILoadersContext& loadersContext_; |
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106 bool active_; |
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107 unsigned int simultaneousDownloads_; |
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108 PendingCommands pendingCommands_; |
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109 unsigned int activeCommands_; |
815 | 110 |
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111 |
815 | 112 public: |
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113 LoaderStateMachine(OrthancStone::ILoadersContext& loadersContext); |
815 | 114 |
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115 void PostConstructor(); |
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116 |
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117 virtual ~LoaderStateMachine(); |
815 | 118 |
119 bool IsActive() const | |
120 { | |
121 return active_; | |
122 } | |
123 | |
124 void SetSimultaneousDownloads(unsigned int count); | |
125 }; | |
126 } |