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annotate Sources/ReceivedInstanceCallback.cpp @ 213:f8dc8dd2da76

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documented orthanc.RegisterIncomingCStoreInstanceFilter() and orthanc.RegisterReceivedInstanceCallback()
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 03 Jul 2024 14:56:51 +0200
parents c8de83fe7faa
children 3678a028f1f6
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1 /**
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2 * Python plugin for Orthanc
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3 * Copyright (C) 2020-2023 Osimis S.A., Belgium
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4 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium
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5 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, 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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22 #include "ReceivedInstanceCallback.h"
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24 #include "PythonHeaderWrapper.h"
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26 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h"
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27 #include "ICallbackRegistration.h"
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28 #include "PythonString.h"
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31 #if ORTHANC_PLUGINS_VERSION_IS_ABOVE(1, 10, 0)
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33 #include <Compatibility.h> // For std::unique_ptr<>
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35 static PyObject* receivedInstanceCallback_ = NULL;
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38 static OrthancPluginReceivedInstanceAction ReceivedInstanceCallback(
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39 OrthancPluginMemoryBuffer64* modifiedDicomBuffer /* out */,
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40 const void* receivedDicomBuffer,
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41 uint64_t receivedDicomBufferSize,
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42 OrthancPluginInstanceOrigin origin)
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43 {
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44 try
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45 {
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46 PythonLock lock;
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47
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48 PythonObject args(lock, PyTuple_New(2));
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50 PyTuple_SetItem(args.GetPyObject(), 0, PyBytes_FromStringAndSize(reinterpret_cast<const char*>(receivedDicomBuffer), receivedDicomBufferSize));
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51 PyTuple_SetItem(args.GetPyObject(), 1, PyLong_FromLong(origin));
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53 PythonObject result(lock, PyObject_CallObject(receivedInstanceCallback_, args.GetPyObject()));
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55 std::string traceback;
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56 if (lock.HasErrorOccurred(traceback))
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57 {
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58 ORTHANC_PLUGINS_LOG_ERROR("Error in the Python received instance callback, traceback:\n" + traceback);
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59 return OrthancPluginReceivedInstanceAction_KeepAsIs;
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60 }
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61 else if (!PyTuple_Check(result.GetPyObject()) || PyTuple_Size(result.GetPyObject()) != 2)
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62 {
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63 ORTHANC_PLUGINS_LOG_ERROR("The Python received instance callback has not returned a tuple as expected");
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64 return OrthancPluginReceivedInstanceAction_KeepAsIs;
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65 }
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66 else
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67 {
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68 PyObject* returnCode = PyTuple_GET_ITEM(result.GetPyObject(), 0);
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69 PyObject* modifiedDicom = PyTuple_GET_ITEM(result.GetPyObject(), 1);
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71 if (!PyLong_Check(returnCode))
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72 {
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73 ORTHANC_PLUGINS_LOG_ERROR("The Python received instance callback has not returned an int as the first element of the return tuple");
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74 return OrthancPluginReceivedInstanceAction_KeepAsIs;
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75 }
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77 OrthancPluginReceivedInstanceAction resultCode = static_cast<OrthancPluginReceivedInstanceAction>(PyLong_AsLong(returnCode));
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79 if (resultCode == OrthancPluginReceivedInstanceAction_KeepAsIs ||
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80 resultCode == OrthancPluginReceivedInstanceAction_Discard)
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81 {
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82 return resultCode;
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83 }
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84 else
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85 {
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86 char* pythonBuffer = NULL;
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87 Py_ssize_t pythonSize = 0;
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88 if (PyBytes_AsStringAndSize(modifiedDicom, &pythonBuffer, &pythonSize) == 1)
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89 {
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90 ORTHANC_PLUGINS_LOG_ERROR("Cannot access the byte buffer returned by the Python received instance callback");
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91 return OrthancPluginReceivedInstanceAction_KeepAsIs;
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92 }
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93 else
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94 {
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95 OrthancPluginCreateMemoryBuffer64(OrthancPlugins::GetGlobalContext(), modifiedDicomBuffer, pythonSize);
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97 if (pythonSize != 0)
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98 {
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99 if (modifiedDicomBuffer->data == NULL)
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100 {
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101 ORTHANC_PLUGINS_LOG_ERROR("Cannot allocate memory in the Python received instance callback");
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102 return OrthancPluginReceivedInstanceAction_KeepAsIs;
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103 }
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104 else
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105 {
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106 memcpy(modifiedDicomBuffer->data, pythonBuffer, pythonSize);
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107 }
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108 }
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109
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110 return OrthancPluginReceivedInstanceAction_Modify;
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111 }
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112 }
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113 }
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114 }
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115 catch (OrthancPlugins::PluginException& e)
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116 {
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117 ORTHANC_PLUGINS_LOG_ERROR("Error in the Python received instance callback: " +
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118 std::string(e.What(OrthancPlugins::GetGlobalContext())));
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119 }
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120
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121 return OrthancPluginReceivedInstanceAction_KeepAsIs;
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122 }
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125 PyObject* RegisterReceivedInstanceCallback(PyObject* module, PyObject* args)
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126 {
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127 // The GIL is locked at this point (no need to create "PythonLock")
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128
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129 class Registration : public ICallbackRegistration
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130 {
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131 public:
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132 virtual void Register() ORTHANC_OVERRIDE
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133 {
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134 OrthancPluginRegisterReceivedInstanceCallback(
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135 OrthancPlugins::GetGlobalContext(), ReceivedInstanceCallback);
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136 }
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137 };
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138
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139 Registration registration;
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140 return ICallbackRegistration::Apply(
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141 registration, args, receivedInstanceCallback_, "Python received instance callback");
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142 }
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143
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144
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145 void FinalizeReceivedInstanceCallback()
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146 {
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147 ICallbackRegistration::Unregister(receivedInstanceCallback_);
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148 }
100
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149
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150 #else
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151
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152 #warning OrthancPluginRegisterReceivedInstanceCallback() is not supported
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153
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154 PyObject* RegisterReceivedInstanceCallback(PyObject* module, PyObject* args)
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155 {
102
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156 PyErr_SetString(PyExc_RuntimeError, "The version of your Orthanc SDK doesn't provide OrthancPluginRegisterReceivedInstanceCallback()");
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157 return NULL;
100
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158 }
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159
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160 void FinalizeReceivedInstanceCallback()
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161 {
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162 }
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163
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164 #endif