Mercurial > hg > orthanc-stone
annotate Framework/Loaders/LoaderStateMachine.h @ 1138:1a73f852810a broker
integration mainline->broker
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 07 Nov 2019 07:28:39 +0100 |
parents | 8e3763d1736a |
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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 #pragma once | |
23 | |
24 #include "../Messages/IObservable.h" | |
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25 #include "../Messages/ObserverBase.h" |
815 | 26 #include "../Oracle/GetOrthancImageCommand.h" |
27 #include "../Oracle/GetOrthancWebViewerJpegCommand.h" | |
28 #include "../Oracle/IOracle.h" | |
29 #include "../Oracle/OracleCommandExceptionMessage.h" | |
30 #include "../Oracle/OrthancRestApiCommand.h" | |
31 | |
32 #include <Core/IDynamicObject.h> | |
33 | |
34 #include <list> | |
35 | |
36 namespace OrthancStone | |
37 { | |
38 /** | |
39 This class is supplied with Oracle commands and will schedule up to | |
40 simultaneousDownloads_ of them at the same time, then will schedule the | |
41 rest once slots become available. It is used, a.o., by the | |
42 OrtancMultiframeVolumeLoader class. | |
43 */ | |
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44 class LoaderStateMachine : public ObserverBase<LoaderStateMachine> |
815 | 45 { |
46 protected: | |
47 class State : public Orthanc::IDynamicObject | |
48 { | |
49 private: | |
50 LoaderStateMachine& that_; | |
51 | |
52 public: | |
53 State(LoaderStateMachine& that) : | |
54 that_(that) | |
55 { | |
56 } | |
57 | |
58 State(const State& currentState) : | |
59 that_(currentState.that_) | |
60 { | |
61 } | |
62 | |
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63 void Schedule(OracleCommandBase* command) const |
815 | 64 { |
65 that_.Schedule(command); | |
66 } | |
67 | |
68 template <typename T> | |
69 T& GetLoader() const | |
70 { | |
71 return dynamic_cast<T&>(that_); | |
72 } | |
73 | |
74 virtual void Handle(const OrthancRestApiCommand::SuccessMessage& message); | |
75 | |
76 virtual void Handle(const GetOrthancImageCommand::SuccessMessage& message); | |
77 | |
78 virtual void Handle(const GetOrthancWebViewerJpegCommand::SuccessMessage& message); | |
79 }; | |
80 | |
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81 void Schedule(OracleCommandBase* command); |
815 | 82 |
83 void Start(); | |
84 | |
85 private: | |
86 void Step(); | |
87 | |
88 void Clear(); | |
89 | |
90 void HandleExceptionMessage(const OracleCommandExceptionMessage& message); | |
91 | |
92 template <typename T> | |
93 void HandleSuccessMessage(const T& message); | |
94 | |
95 typedef std::list<IOracleCommand*> PendingCommands; | |
96 | |
97 IOracle& oracle_; | |
98 bool active_; | |
99 unsigned int simultaneousDownloads_; | |
100 PendingCommands pendingCommands_; | |
101 unsigned int activeCommands_; | |
102 | |
103 public: | |
104 LoaderStateMachine(IOracle& oracle, | |
105 IObservable& oracleObservable); | |
106 | |
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107 virtual ~LoaderStateMachine(); |
815 | 108 |
109 bool IsActive() const | |
110 { | |
111 return active_; | |
112 } | |
113 | |
114 void SetSimultaneousDownloads(unsigned int count); | |
115 }; | |
116 } |