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annotate OrthancStone/Sources/Messages/IObservable.cpp @ 1598:8563ea5d8ae4

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relicensing some files, cf. osimis bm26 and chu agreement on 2020-05-20
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 26 Oct 2020 20:49:28 +0100
parents 244ad1e4e76a
children 9ac2a65d4172
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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
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #include "IObservable.h"
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24
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25 #include "../StoneException.h"
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26
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27 #include <Logging.h>
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29 #include <cassert>
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30
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31 namespace OrthancStone
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32 {
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33 IObservable::~IObservable()
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34 {
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35 // delete all callables (this will also unregister them from the broker)
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36 for (Callables::const_iterator it = callables_.begin();
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37 it != callables_.end(); ++it)
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38 {
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39 for (std::set<ICallable*>::const_iterator
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40 it2 = it->second.begin(); it2 != it->second.end(); ++it2)
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41 {
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42 delete *it2;
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43 }
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44 }
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45 }
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47
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48 void IObservable::RegisterCallable(ICallable* callable)
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49 {
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50 if (callable == NULL)
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51 {
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52 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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53 }
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54
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55 const MessageIdentifier& id = callable->GetMessageIdentifier();
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56 callables_[id].insert(callable);
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57 }
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58
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59 void IObservable::EmitMessageInternal(const IObserver* receiver,
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60 const IMessage& message)
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61 {
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62 //LOG(TRACE) << "IObservable::EmitMessageInternal receiver = " << std::hex << receiver << std::dec;
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63 Callables::const_iterator found = callables_.find(message.GetIdentifier());
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64
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65 if (found != callables_.end())
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66 {
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67 for (std::set<ICallable*>::const_iterator
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68 it = found->second.begin(); it != found->second.end(); ++it)
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69 {
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70 assert(*it != NULL);
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71
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72 boost::shared_ptr<IObserver> observer((*it)->GetObserver().lock());
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73
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74 if (observer)
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75 {
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76 if (receiver == NULL || // Are we broadcasting?
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77 observer.get() == receiver) // Not broadcasting, but this is the receiver
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78 {
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79 try
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80 {
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81 (*it)->Apply(message);
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82 }
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83 catch (Orthanc::OrthancException& e)
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84 {
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85 LOG(ERROR) << "Exception on callable: " << e.What();
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86 }
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87 catch (StoneException& e)
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88 {
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89 LOG(ERROR) << "Exception on callable: " << e.What();
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90 }
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91 catch (...)
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92 {
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93 LOG(ERROR) << "Native exception on callable";
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94 }
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95 }
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96 }
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97 else
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98 {
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99 // TODO => Remove "it" from the list of callables => This
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100 // allows to suppress the need for "Unregister()"
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101 }
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102 }
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103 }
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104 }
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105
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107 void IObservable::BroadcastMessage(const IMessage& message)
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108 {
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109 EmitMessageInternal(NULL, message);
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110 }
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112
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113 void IObservable::EmitMessage(boost::weak_ptr<IObserver> observer,
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114 const IMessage& message)
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115 {
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116 //LOG(TRACE) << "IObservable::EmitMessage observer = " << std::hex << observer.get() << std::dec;
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117
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118 boost::shared_ptr<IObserver> lock(observer.lock());
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119 if (lock)
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120 {
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121 EmitMessageInternal(lock.get(), message);
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122 }
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123 }
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124 }