Mercurial > hg > orthanc-python
annotate Sources/ReceivedInstanceCallback.cpp @ 122:45722358d459 fix-leak
added PythonBytes
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 30 Aug 2023 08:14:02 +0200 |
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rev | line source |
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1 /** |
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2 * Python plugin for Orthanc |
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3 * Copyright (C) 2020-2022 Osimis S.A., Belgium |
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4 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
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5 * |
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6 * This program is free software: you can redistribute it and/or |
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7 * modify it under the terms of the GNU Affero General Public License |
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8 * as published by the Free Software Foundation, either version 3 of |
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9 * the License, or (at your option) any later version. |
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10 * |
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11 * This program is distributed in the hope that it will be useful, but |
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 * Affero General Public License for more details. |
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15 * |
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16 * You should have received a copy of the GNU Affero General Public License |
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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18 **/ |
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19 |
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20 |
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21 #include "ReceivedInstanceCallback.h" |
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22 |
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23 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h" |
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24 #include "ICallbackRegistration.h" |
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25 #include "PythonString.h" |
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26 |
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27 |
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28 #if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 10, 0) |
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29 |
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30 #include <Compatibility.h> // For std::unique_ptr<> |
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31 |
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32 static PyObject* receivedInstanceCallback_ = NULL; |
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33 |
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34 |
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35 static OrthancPluginReceivedInstanceAction ReceivedInstanceCallback( |
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36 OrthancPluginMemoryBuffer64* modifiedDicomBuffer /* out */, |
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37 const void* receivedDicomBuffer, |
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38 uint64_t receivedDicomBufferSize, |
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39 OrthancPluginInstanceOrigin origin) |
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40 { |
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41 try |
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42 { |
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43 PythonLock lock; |
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44 |
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45 PythonObject args(lock, PyTuple_New(2)); |
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46 |
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47 PyTuple_SetItem(args.GetPyObject(), 0, PyBytes_FromStringAndSize(reinterpret_cast<const char*>(receivedDicomBuffer), receivedDicomBufferSize)); |
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48 PyTuple_SetItem(args.GetPyObject(), 1, PyLong_FromLong(origin)); |
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49 |
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50 PythonObject result(lock, PyObject_CallObject(receivedInstanceCallback_, args.GetPyObject())); |
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51 |
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52 std::string traceback; |
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53 if (lock.HasErrorOccurred(traceback)) |
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54 { |
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55 OrthancPlugins::LogError("Error in the Python received instance callback, traceback:\n" + traceback); |
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56 return OrthancPluginReceivedInstanceAction_KeepAsIs; |
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57 } |
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58 else if (!PyTuple_Check(result.GetPyObject()) || PyTuple_Size(result.GetPyObject()) != 2) |
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59 { |
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60 OrthancPlugins::LogError("The Python received instance callback has not returned a tuple as expected"); |
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61 return OrthancPluginReceivedInstanceAction_KeepAsIs; |
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62 } |
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63 else |
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64 { |
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65 PyObject* returnCode = PyTuple_GET_ITEM(result.GetPyObject(), 0); |
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66 PyObject* modifiedDicom = PyTuple_GET_ITEM(result.GetPyObject(), 1); |
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67 |
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68 if (!PyLong_Check(returnCode)) |
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69 { |
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70 OrthancPlugins::LogError("The Python received instance callback has not returned an int as the first element of the return tuple"); |
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71 return OrthancPluginReceivedInstanceAction_KeepAsIs; |
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72 } |
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73 |
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74 OrthancPluginReceivedInstanceAction resultCode = static_cast<OrthancPluginReceivedInstanceAction>(PyLong_AsLong(returnCode)); |
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75 |
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76 if (resultCode == OrthancPluginReceivedInstanceAction_KeepAsIs || |
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77 resultCode == OrthancPluginReceivedInstanceAction_Discard) |
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78 { |
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79 return resultCode; |
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80 } |
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81 else |
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82 { |
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83 char* pythonBuffer = NULL; |
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84 Py_ssize_t pythonSize = 0; |
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85 if (PyBytes_AsStringAndSize(modifiedDicom, &pythonBuffer, &pythonSize) == 1) |
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86 { |
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87 OrthancPlugins::LogError("Cannot access the byte buffer returned by the Python received instance callback"); |
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88 return OrthancPluginReceivedInstanceAction_KeepAsIs; |
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89 } |
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90 else |
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91 { |
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92 OrthancPluginCreateMemoryBuffer64(OrthancPlugins::GetGlobalContext(), modifiedDicomBuffer, pythonSize); |
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93 |
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94 if (pythonSize != 0) |
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95 { |
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96 if (modifiedDicomBuffer->data == NULL) |
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97 { |
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98 OrthancPlugins::LogError("Cannot allocate memory in the Python received instance callback"); |
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99 return OrthancPluginReceivedInstanceAction_KeepAsIs; |
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100 } |
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101 else |
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102 { |
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103 memcpy(modifiedDicomBuffer->data, pythonBuffer, pythonSize); |
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104 } |
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105 } |
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106 |
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107 return OrthancPluginReceivedInstanceAction_Modify; |
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108 } |
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109 } |
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110 } |
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111 } |
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112 catch (OrthancPlugins::PluginException& e) |
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113 { |
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114 OrthancPlugins::LogError("Error in the Python received instance callback: " + |
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115 std::string(e.What(OrthancPlugins::GetGlobalContext()))); |
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116 } |
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117 |
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118 return OrthancPluginReceivedInstanceAction_KeepAsIs; |
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119 } |
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120 |
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121 |
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122 PyObject* RegisterReceivedInstanceCallback(PyObject* module, PyObject* args) |
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123 { |
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124 // The GIL is locked at this point (no need to create "PythonLock") |
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125 |
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126 class Registration : public ICallbackRegistration |
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127 { |
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128 public: |
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129 virtual void Register() ORTHANC_OVERRIDE |
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130 { |
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131 OrthancPluginRegisterReceivedInstanceCallback( |
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132 OrthancPlugins::GetGlobalContext(), ReceivedInstanceCallback); |
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133 } |
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134 }; |
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135 |
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136 Registration registration; |
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137 return ICallbackRegistration::Apply( |
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138 registration, args, receivedInstanceCallback_, "Python received instance callback"); |
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139 } |
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140 |
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141 |
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142 void FinalizeReceivedInstanceCallback() |
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143 { |
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144 ICallbackRegistration::Unregister(receivedInstanceCallback_); |
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145 } |
100
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146 |
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147 #else |
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148 |
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149 #warning OrthancPluginRegisterReceivedInstanceCallback() is not supported |
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150 |
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151 PyObject* RegisterReceivedInstanceCallback(PyObject* module, PyObject* args) |
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152 { |
102
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153 PyErr_SetString(PyExc_RuntimeError, "The version of your Orthanc SDK doesn't provide OrthancPluginRegisterReceivedInstanceCallback()"); |
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154 return NULL; |
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155 } |
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156 |
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157 void FinalizeReceivedInstanceCallback() |
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158 { |
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159 } |
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160 |
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161 #endif |