annotate Sources/ReceivedInstanceCallback.cpp @ 122:45722358d459 fix-leak

added PythonBytes
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 30 Aug 2023 08:14:02 +0200
parents d2259c4cd677
children 65ec5597ec70
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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21 #include "ReceivedInstanceCallback.h"
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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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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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32 static PyObject* receivedInstanceCallback_ = NULL;
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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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50 PythonObject result(lock, PyObject_CallObject(receivedInstanceCallback_, args.GetPyObject()));
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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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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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74 OrthancPluginReceivedInstanceAction resultCode = static_cast<OrthancPluginReceivedInstanceAction>(PyLong_AsLong(returnCode));
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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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parents:
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144 ICallbackRegistration::Unregister(receivedInstanceCallback_);
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145 }
100
e2b2e1d4e1bb fixed compatibility with Orthanc SDK 1.8.1
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 99
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146
e2b2e1d4e1bb fixed compatibility with Orthanc SDK 1.8.1
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 99
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147 #else
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Sebastien Jodogne <s.jodogne@gmail.com>
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148
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 99
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149 #warning OrthancPluginRegisterReceivedInstanceCallback() is not supported
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150
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 99
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151 PyObject* RegisterReceivedInstanceCallback(PyObject* module, PyObject* args)
e2b2e1d4e1bb fixed compatibility with Orthanc SDK 1.8.1
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 99
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152 {
102
ed994991a20b improved error handling
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 101
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153 PyErr_SetString(PyExc_RuntimeError, "The version of your Orthanc SDK doesn't provide OrthancPluginRegisterReceivedInstanceCallback()");
ed994991a20b improved error handling
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parents: 101
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154 return NULL;
100
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parents: 99
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155 }
e2b2e1d4e1bb fixed compatibility with Orthanc SDK 1.8.1
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 99
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156
e2b2e1d4e1bb fixed compatibility with Orthanc SDK 1.8.1
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 99
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157 void FinalizeReceivedInstanceCallback()
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 99
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158 {
e2b2e1d4e1bb fixed compatibility with Orthanc SDK 1.8.1
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 99
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159 }
e2b2e1d4e1bb fixed compatibility with Orthanc SDK 1.8.1
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 99
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160
e2b2e1d4e1bb fixed compatibility with Orthanc SDK 1.8.1
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 99
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161 #endif