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annotate OrthancStone/Sources/Messages/IObservable.cpp @ 1871:7053b8a0aaec

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Jan 2022 11:18:48 +0100
parents 3889ae96d2e9
children 07964689cb0b
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
1871
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #include "IObservable.h"
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25
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26 #include "../StoneException.h"
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27
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28 #include <Logging.h>
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29
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30 #include <cassert>
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31 #include <stdexcept>
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32
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33 namespace OrthancStone
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34 {
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35 IObservable::~IObservable()
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36 {
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37 // delete all callables (this will also unregister them from the broker)
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38 for (Callables::const_iterator it = callables_.begin();
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39 it != callables_.end(); ++it)
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40 {
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41 for (std::set<ICallable*>::const_iterator
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42 it2 = it->second.begin(); it2 != it->second.end(); ++it2)
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43 {
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44 delete *it2;
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45 }
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46 }
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47 }
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48
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49
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50 void IObservable::RegisterCallable(ICallable* callable)
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51 {
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52 if (callable == NULL)
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53 {
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54 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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55 }
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56
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57 const MessageIdentifier& id = callable->GetMessageIdentifier();
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58 callables_[id].insert(callable);
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59 }
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60
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61 void IObservable::EmitMessageInternal(const IObserver* receiver,
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62 const IMessage& message)
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63 {
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64 //LOG(TRACE) << "IObservable::EmitMessageInternal receiver = " << std::hex << receiver << std::dec;
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65 Callables::const_iterator found = callables_.find(message.GetIdentifier());
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66
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67 if (found != callables_.end())
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68 {
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69 for (std::set<ICallable*>::const_iterator
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70 it = found->second.begin(); it != found->second.end(); ++it)
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71 {
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72 assert(*it != NULL);
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73
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74 boost::shared_ptr<IObserver> observer((*it)->GetObserver().lock());
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75
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76 if (observer)
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77 {
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78 if (receiver == NULL || // Are we broadcasting?
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79 observer.get() == receiver) // Not broadcasting, but this is the receiver
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80 {
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81 try
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82 {
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83 (*it)->Apply(message);
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84 }
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85 catch (Orthanc::OrthancException& e)
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86 {
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87 LOG(ERROR) << "Exception on callable: " << e.What();
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88 }
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89 catch (StoneException& e)
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90 {
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91 LOG(ERROR) << "Exception on callable: " << e.What();
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92 }
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93 catch (std::exception& e)
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94 {
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95 LOG(ERROR) << "C++ exception on callable: " << e.what();
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96 }
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97 catch (...)
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98 {
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99 LOG(ERROR) << "Native exception on callable";
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100 }
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101 }
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102 }
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103 else
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104 {
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105 // TODO => Remove "it" from the list of callables => This
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106 // allows to suppress the need for "Unregister()"
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107 }
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108 }
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109 }
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110 }
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111
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113 void IObservable::BroadcastMessage(const IMessage& message)
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114 {
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115 EmitMessageInternal(NULL, message);
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116 }
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118
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119 void IObservable::EmitMessage(boost::weak_ptr<IObserver> observer,
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120 const IMessage& message)
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121 {
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122 //LOG(TRACE) << "IObservable::EmitMessage observer = " << std::hex << observer.get() << std::dec;
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123
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124 boost::shared_ptr<IObserver> lock(observer.lock());
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125 if (lock)
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126 {
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127 EmitMessageInternal(lock.get(), message);
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128 }
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129 }
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130 }