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annotate Framework/Messages/IObservable.cpp @ 1186:3284c3fd96ad broker

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 22 Nov 2019 09:51:47 +0100
parents 5e164c629923
children 0ca50d275b9a
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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) 2017-2019 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 Affero 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 * Affero 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 Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "IObservable.h"
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23
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24 #include "../StoneException.h"
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25
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26 #include <Core/Logging.h>
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27
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28 #include <cassert>
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29
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30 namespace OrthancStone
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31 {
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32 IObservable::~IObservable()
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33 {
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34 // delete all callables (this will also unregister them from the broker)
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35 for (Callables::const_iterator it = callables_.begin();
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36 it != callables_.end(); ++it)
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37 {
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38 for (std::set<ICallable*>::const_iterator
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39 it2 = it->second.begin(); it2 != it->second.end(); ++it2)
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40 {
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41 delete *it2;
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42 }
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43 }
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44 }
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46
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47 void IObservable::RegisterCallable(ICallable* callable)
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48 {
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49 if (callable == NULL)
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50 {
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51 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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52 }
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53
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54 const MessageIdentifier& id = callable->GetMessageIdentifier();
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55 callables_[id].insert(callable);
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56 }
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57
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58 void IObservable::EmitMessageInternal(const IObserver* receiver,
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59 const IMessage& message)
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60 {
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61 //LOG(TRACE) << "IObservable::EmitMessageInternal receiver = " << std::hex << receiver << std::dec;
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62 Callables::const_iterator found = callables_.find(message.GetIdentifier());
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63
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64 if (found != callables_.end())
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65 {
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66 for (std::set<ICallable*>::const_iterator
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67 it = found->second.begin(); it != found->second.end(); ++it)
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68 {
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69 assert(*it != NULL);
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71 boost::shared_ptr<IObserver> observer((*it)->GetObserver().lock());
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72
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73 if (observer)
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74 {
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75 if (receiver == NULL || // Are we broadcasting?
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76 observer.get() == receiver) // Not broadcasting, but this is the receiver
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77 {
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78 try
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79 {
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80 (*it)->Apply(message);
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81 }
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82 catch (Orthanc::OrthancException& e)
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83 {
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84 LOG(ERROR) << "Exception on callable: " << e.What();
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85 }
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86 catch (StoneException& e)
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87 {
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88 LOG(ERROR) << "Exception on callable: " << e.What();
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89 }
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90 catch (...)
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91 {
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92 LOG(ERROR) << "Native exception on callable";
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93 }
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94 }
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95 }
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96 else
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97 {
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98 // TODO => Remove "it" from the list of callables => This
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99 // allows to suppress the need for "Unregister()"
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100 }
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101 }
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102 }
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103 }
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104
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106 void IObservable::BroadcastMessage(const IMessage& message)
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107 {
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108 EmitMessageInternal(NULL, message);
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109 }
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111
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112 void IObservable::EmitMessage(boost::weak_ptr<IObserver> observer,
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113 const IMessage& message)
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114 {
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115 //LOG(TRACE) << "IObservable::EmitMessage observer = " << std::hex << &observer << std::dec;
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116
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117 boost::shared_ptr<IObserver> lock(observer.lock());
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118 if (lock)
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119 {
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120 EmitMessageInternal(lock.get(), message);
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121 }
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122 }
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123 }