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annotate Sources/StorageArea.cpp @ 79:068551520123

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New Python function: "orthanc.RegisterStorageArea()"
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 12 Aug 2021 17:52:17 +0200
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children ad31ac9a6fef
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79
068551520123 New Python function: "orthanc.RegisterStorageArea()"
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1 /**
068551520123 New Python function: "orthanc.RegisterStorageArea()"
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2 * Python plugin for Orthanc
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3 * Copyright (C) 2020-2021 Osimis S.A., Belgium
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4 *
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5 * This program is free software: you can redistribute it and/or
068551520123 New Python function: "orthanc.RegisterStorageArea()"
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6 * modify it under the terms of the GNU Affero General Public License
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7 * as published by the Free Software Foundation, either version 3 of
068551520123 New Python function: "orthanc.RegisterStorageArea()"
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8 * the License, or (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful, but
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11 * WITHOUT ANY WARRANTY; without even the implied warranty of
068551520123 New Python function: "orthanc.RegisterStorageArea()"
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 * Affero General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU Affero General Public License
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 **/
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18
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19
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20 #include "StorageArea.h"
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21
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22 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h"
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23 #include "PythonString.h"
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24
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25
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26 static PyObject* createCallback_ = NULL;
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27 static PyObject* readCallback_ = NULL;
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28 static PyObject* removeCallback_ = NULL;
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29
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30
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31 static OrthancPluginErrorCode RunCallback(PythonLock& lock,
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32 PyObject* callback,
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33 PythonObject& args,
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34 const std::string& name)
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35 {
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36 PythonObject result(lock, PyObject_CallObject(callback, args.GetPyObject()));
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37
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38 std::string traceback;
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39 if (lock.HasErrorOccurred(traceback))
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40 {
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41 OrthancPlugins::LogError("Error in the Python " + name + " callback, traceback:\n" + traceback);
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42 return OrthancPluginErrorCode_Plugin;
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43 }
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44 else
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45 {
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46 return OrthancPluginErrorCode_Success;
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47 }
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48 }
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49
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50
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51 static OrthancPluginErrorCode StorageCreate(const char *uuid,
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52 const void *content,
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53 int64_t size,
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54 OrthancPluginContentType type)
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55 {
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56 try
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57 {
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58 if (createCallback_ == NULL)
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59 {
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60 throw OrthancPlugins::PluginException(OrthancPluginErrorCode_InternalError);
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61 }
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62
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63 PythonLock lock;
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64
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65 PythonObject args(lock, PyTuple_New(3));
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66
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67 PythonString str(lock, uuid);
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68 PyTuple_SetItem(args.GetPyObject(), 0, str.Release());
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69 PyTuple_SetItem(args.GetPyObject(), 1, PyLong_FromLong(type));
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70 PyTuple_SetItem(args.GetPyObject(), 2, PyBytes_FromStringAndSize(reinterpret_cast<const char*>(content), size));
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71
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72 return RunCallback(lock, createCallback_, args, "StorageCreate");
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73 }
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74 catch (OrthancPlugins::PluginException& e)
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75 {
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76 return e.GetErrorCode();
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77 }
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78 }
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79
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80
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81 static OrthancPluginErrorCode StorageRead(void **content,
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82 int64_t *size,
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83 const char *uuid,
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84 OrthancPluginContentType type)
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85 {
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86 try
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87 {
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88 if (readCallback_ == NULL)
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89 {
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90 throw OrthancPlugins::PluginException(OrthancPluginErrorCode_InternalError);
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91 }
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92
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93 PythonLock lock;
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94
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95 PythonObject args(lock, PyTuple_New(2));
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96
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97 PythonString str(lock, uuid);
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98 PyTuple_SetItem(args.GetPyObject(), 0, str.Release());
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99 PyTuple_SetItem(args.GetPyObject(), 1, PyLong_FromLong(type));
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100
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101 PythonObject result(lock, PyObject_CallObject(readCallback_, args.GetPyObject()));
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102
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103 std::string traceback;
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104 if (lock.HasErrorOccurred(traceback))
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105 {
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106 OrthancPlugins::LogError("Error in the Python StorageRead callback, traceback:\n" + traceback);
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107 return OrthancPluginErrorCode_Plugin;
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108 }
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109 else if (!PyBytes_Check(result.GetPyObject()))
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110 {
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111 OrthancPlugins::LogError("The Python StorageRead callback has not returned a byte array as expected");
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112 return OrthancPluginErrorCode_Plugin;
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113 }
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114 else
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115 {
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116 char* pythonBuffer = NULL;
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117 Py_ssize_t pythonSize = 0;
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118 if (PyBytes_AsStringAndSize(result.GetPyObject(), &pythonBuffer, &pythonSize) == 1)
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119 {
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120 OrthancPlugins::LogError("Cannot access the byte buffer returned by the Python StorageRead callback");
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121 return OrthancPluginErrorCode_Plugin;
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122 }
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123 else
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124 {
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125 if (pythonSize == 0)
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126 {
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127 *content = NULL;
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128 *size = 0;
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129 }
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130 else
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131 {
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132 *content = malloc(pythonSize);
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133 *size = pythonSize;
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134 if (*content == NULL)
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
135 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
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diff changeset
136 return OrthancPluginErrorCode_NotEnoughMemory;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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137 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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138
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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139 memcpy(*content, pythonBuffer, pythonSize);
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
140 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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141
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Sebastien Jodogne <s.jodogne@gmail.com>
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142 return OrthancPluginErrorCode_Success;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
143 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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144 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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145 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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146 catch (OrthancPlugins::PluginException& e)
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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147 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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148 return e.GetErrorCode();
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149 }
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150 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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151
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152
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Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
153 static OrthancPluginErrorCode StorageRemove(const char *uuid,
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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154 OrthancPluginContentType type)
068551520123 New Python function: "orthanc.RegisterStorageArea()"
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155 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
156 try
068551520123 New Python function: "orthanc.RegisterStorageArea()"
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157 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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158 if (removeCallback_ == NULL)
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Sebastien Jodogne <s.jodogne@gmail.com>
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159 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
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160 throw OrthancPlugins::PluginException(OrthancPluginErrorCode_InternalError);
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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161 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
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162
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
163 PythonLock lock;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
164
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Sebastien Jodogne <s.jodogne@gmail.com>
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165 PythonObject args(lock, PyTuple_New(2));
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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166
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Sebastien Jodogne <s.jodogne@gmail.com>
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167 PythonString str(lock, uuid);
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Sebastien Jodogne <s.jodogne@gmail.com>
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168 PyTuple_SetItem(args.GetPyObject(), 0, str.Release());
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169 PyTuple_SetItem(args.GetPyObject(), 1, PyLong_FromLong(type));
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parents:
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170
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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171 return RunCallback(lock, removeCallback_, args, "StorageRemove");
068551520123 New Python function: "orthanc.RegisterStorageArea()"
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172 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
173 catch (OrthancPlugins::PluginException& e)
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
174 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
175 return e.GetErrorCode();
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
176 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
177 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
178
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
179
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
180 PyObject* RegisterStorageArea(PyObject* module, PyObject* args)
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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181 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
182 // The GIL is locked at this point (no need to create "PythonLock")
068551520123 New Python function: "orthanc.RegisterStorageArea()"
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parents:
diff changeset
183
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
184 PyObject* a = NULL;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
185 PyObject* b = NULL;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
186 PyObject* c = NULL;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
187
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
188 if (!PyArg_ParseTuple(args, "OOO", &a, &b, &c) ||
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
189 a == NULL ||
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
190 b == NULL ||
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
191 c == NULL)
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
192 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
193 PyErr_SetString(PyExc_ValueError, "Expected three callback functions to register a custom storage area");
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
194 return NULL;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
195 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
196 else if (createCallback_ != NULL ||
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
197 readCallback_ != NULL ||
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
198 removeCallback_ != NULL)
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
199 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
200 PyErr_SetString(PyExc_RuntimeError, "Cannot register twice a custom storage area");
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
201 return NULL;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
202 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
203 else
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
204 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
205 OrthancPlugins::LogInfo("Registering a custom storage area in Python");
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
206
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
207 OrthancPluginRegisterStorageArea(OrthancPlugins::GetGlobalContext(),
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
208 StorageCreate, StorageRead, StorageRemove);
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
209
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
210 createCallback_ = a;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
211 Py_XINCREF(createCallback_);
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
212
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
213 readCallback_ = b;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
214 Py_XINCREF(readCallback_);
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
215
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
216 removeCallback_ = c;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
217 Py_XINCREF(removeCallback_);
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
218
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
219 Py_INCREF(Py_None);
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
220 return Py_None;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
221 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
222 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
223
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
224
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
225 void FinalizeStorageArea()
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
226 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
227 PythonLock lock;
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
228
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
229 if (createCallback_ != NULL)
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
230 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
231 Py_XDECREF(createCallback_);
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
232 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
233
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
234 if (readCallback_ != NULL)
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
235 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
236 Py_XDECREF(readCallback_);
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
237 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
238
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
239 if (removeCallback_ != NULL)
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
240 {
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
241 Py_XDECREF(removeCallback_);
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
242 }
068551520123 New Python function: "orthanc.RegisterStorageArea()"
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
243 }