Mercurial > hg > orthanc-stone
annotate Framework/Loaders/LoaderStateMachine.cpp @ 964:91f827272c1f toa2019082701
Added cache-control headers for POST requests + #ifdef'd tracing logs + trace on context restored
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Tue, 27 Aug 2019 14:28:19 +0200 |
parents | a7351ad54960 |
children | 38409549db43 |
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 | |
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26 #if 0 |
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27 extern bool logbgo233; |
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28 extern bool logbgo115; |
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29 #endif |
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30 |
815 | 31 namespace OrthancStone |
32 { | |
33 void LoaderStateMachine::State::Handle(const OrthancRestApiCommand::SuccessMessage& message) | |
34 { | |
35 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
36 } | |
37 | |
38 | |
39 void LoaderStateMachine::State::Handle(const GetOrthancImageCommand::SuccessMessage& message) | |
40 { | |
41 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
42 } | |
43 | |
44 | |
45 void LoaderStateMachine::State::Handle(const GetOrthancWebViewerJpegCommand::SuccessMessage& message) | |
46 { | |
47 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
48 } | |
49 | |
50 | |
51 void LoaderStateMachine::Schedule(OracleCommandWithPayload* command) | |
52 { | |
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53 #if 0 |
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54 if (logbgo233) { |
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55 if (logbgo115) |
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56 LOG(TRACE) << " LoaderStateMachine::Schedule()"; |
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57 } |
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58 #endif |
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59 |
815 | 60 std::auto_ptr<OracleCommandWithPayload> protection(command); |
61 | |
62 if (command == NULL) | |
63 { | |
64 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
65 } | |
66 | |
67 if (!command->HasPayload()) | |
68 { | |
69 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange, | |
70 "The payload must contain the next state"); | |
71 } | |
72 | |
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73 #if 0 |
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74 if (logbgo233) { |
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75 if (logbgo115) |
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76 LOG(TRACE) << " * LoaderStateMachine::Schedule(): adding command with addr: " << std::hex << protection.get() << std::dec << " pendingCommands_.size() is now : " << pendingCommands_.size()+1; |
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77 } |
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78 #endif |
815 | 79 pendingCommands_.push_back(protection.release()); |
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80 |
815 | 81 Step(); |
82 } | |
83 | |
84 | |
85 void LoaderStateMachine::Start() | |
86 { | |
87 if (active_) | |
88 { | |
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89 LOG(TRACE) << "LoaderStateMachine::Start() called while active_ is true"; |
815 | 90 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
91 } | |
92 | |
93 active_ = true; | |
94 | |
95 for (size_t i = 0; i < simultaneousDownloads_; i++) | |
96 { | |
97 Step(); | |
98 } | |
99 } | |
100 | |
101 | |
102 void LoaderStateMachine::Step() | |
103 { | |
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104 #if 0 |
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105 if (logbgo115) |
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106 LOG(TRACE) << " LoaderStateMachine::Step(): pendingCommands_.size() = " << pendingCommands_.size(); |
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107 #endif |
815 | 108 if (!pendingCommands_.empty() && |
109 activeCommands_ < simultaneousDownloads_) | |
110 { | |
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111 |
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112 IOracleCommand* nextCommand = pendingCommands_.front(); |
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113 |
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114 #if 0 |
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115 if (logbgo233) { |
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116 if (logbgo115) |
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117 LOG(TRACE) << " * LoaderStateMachine::Step(): activeCommands_ (" << activeCommands_ << ") < simultaneousDownloads_ (" << simultaneousDownloads_ << ") --> will Schedule command addr " << std::hex << nextCommand << std::dec; |
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118 } |
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119 #endif |
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120 |
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121 oracle_.Schedule(*this, nextCommand); |
815 | 122 pendingCommands_.pop_front(); |
123 | |
124 activeCommands_++; | |
125 } | |
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126 else |
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127 { |
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128 #if 0 |
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129 if (logbgo233) { |
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130 if (logbgo115) |
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131 LOG(TRACE) << " * pendingCommands_.size() == " << pendingCommands_.size() << " LoaderStateMachine::Step(): activeCommands_ (" << activeCommands_ << ") >= simultaneousDownloads_ (" << simultaneousDownloads_ << ") --> will NOT Schedule anything"; |
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132 } |
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133 #endif |
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134 } |
815 | 135 } |
136 | |
137 | |
138 void LoaderStateMachine::Clear() | |
139 { | |
140 for (PendingCommands::iterator it = pendingCommands_.begin(); | |
141 it != pendingCommands_.end(); ++it) | |
142 { | |
143 delete *it; | |
144 } | |
145 | |
146 pendingCommands_.clear(); | |
147 } | |
148 | |
149 | |
150 void LoaderStateMachine::HandleExceptionMessage(const OracleCommandExceptionMessage& message) | |
151 { | |
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152 LOG(ERROR) << "LoaderStateMachine::HandleExceptionMessage: error in the state machine, stopping all processing"; |
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153 LOG(ERROR) << "Error: " << message.GetException().What() << " Details: " << |
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154 message.GetException().GetDetails(); |
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155 Clear(); |
815 | 156 } |
157 | |
158 template <typename T> | |
159 void LoaderStateMachine::HandleSuccessMessage(const T& message) | |
160 { | |
161 assert(activeCommands_ > 0); | |
162 activeCommands_--; | |
163 | |
164 try | |
165 { | |
166 dynamic_cast<State&>(message.GetOrigin().GetPayload()).Handle(message); | |
167 Step(); | |
168 } | |
169 catch (Orthanc::OrthancException& e) | |
170 { | |
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171 LOG(ERROR) << "Error in the state machine, stopping all processing: " << |
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172 e.What() << " Details: " << e.GetDetails(); |
815 | 173 Clear(); |
174 } | |
175 } | |
176 | |
177 | |
178 LoaderStateMachine::LoaderStateMachine(IOracle& oracle, | |
179 IObservable& oracleObservable) : | |
180 IObserver(oracleObservable.GetBroker()), | |
181 oracle_(oracle), | |
182 active_(false), | |
183 simultaneousDownloads_(4), | |
184 activeCommands_(0) | |
185 { | |
186 oracleObservable.RegisterObserverCallback( | |
187 new Callable<LoaderStateMachine, OrthancRestApiCommand::SuccessMessage> | |
188 (*this, &LoaderStateMachine::HandleSuccessMessage)); | |
189 | |
190 oracleObservable.RegisterObserverCallback( | |
191 new Callable<LoaderStateMachine, GetOrthancImageCommand::SuccessMessage> | |
192 (*this, &LoaderStateMachine::HandleSuccessMessage)); | |
193 | |
194 oracleObservable.RegisterObserverCallback( | |
195 new Callable<LoaderStateMachine, GetOrthancWebViewerJpegCommand::SuccessMessage> | |
196 (*this, &LoaderStateMachine::HandleSuccessMessage)); | |
197 | |
198 oracleObservable.RegisterObserverCallback( | |
199 new Callable<LoaderStateMachine, OracleCommandExceptionMessage> | |
200 (*this, &LoaderStateMachine::HandleExceptionMessage)); | |
201 } | |
202 | |
203 | |
204 void LoaderStateMachine::SetSimultaneousDownloads(unsigned int count) | |
205 { | |
206 if (active_) | |
207 { | |
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208 LOG(ERROR) << "LoaderStateMachine::SetSimultaneousDownloads called while active_ is true"; |
815 | 209 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
210 } | |
211 else if (count == 0) | |
212 { | |
213 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
214 } | |
215 else | |
216 { | |
217 simultaneousDownloads_ = count; | |
218 } | |
219 } | |
220 } |