annotate Sources/OnStoredInstanceCallback.cpp @ 26:b0d1308280d8

Added the PYTHON_WINDOWS_USE_RELEASE_LIBS CMake option to allow usage of debug or release Python builds when building in debug mode under Windows with Visual Studio.
author Benjamin Golinvaux <bgo@osimis.io>
date Mon, 06 Apr 2020 20:39:49 +0200
parents 26762eb9d704
children fd58eb5749ed
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1 /**
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2 * Python plugin for Orthanc
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3 * Copyright (C) 2017-2020 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
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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
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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
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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 "OnStoredInstanceCallback.h"
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21
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22 #include "PythonObject.h"
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23 #include "Autogenerated/sdk.h"
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24
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25 #include <OrthancPluginCppWrapper.h>
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28 static PyObject* storedInstanceCallback_ = NULL;
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31 static OrthancPluginErrorCode OnStoredInstanceCallback(OrthancPluginDicomInstance *instance,
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32 const char *instanceId)
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33 {
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34 try
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35 {
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36 PythonLock lock;
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37
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38 /**
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39 * Construct an instance object of the "orthanc.RestOutput"
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40 * class. This is done by calling the constructor function
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41 * "sdk_OrthancPluginRestOutput_Type".
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42 **/
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43 PythonObject args(lock, PyTuple_New(2));
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44 PyTuple_SetItem(args.GetPyObject(), 0, PyLong_FromSsize_t((intptr_t) instance));
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45 PyTuple_SetItem(args.GetPyObject(), 1, PyBool_FromLong(true /* borrowed, don't destruct */));
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46 PyObject *pInst = PyObject_CallObject(GetOrthancPluginDicomInstanceType(), args.GetPyObject());
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47
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48 /**
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49 * Construct the arguments tuple (output, uri)
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50 **/
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51 PythonObject args2(lock, PyTuple_New(2));
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52 PyTuple_SetItem(args2.GetPyObject(), 0, pInst);
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53 PyTuple_SetItem(args2.GetPyObject(), 1, PyUnicode_FromString(instanceId));
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54
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55 PythonObject result(lock, PyObject_CallObject(storedInstanceCallback_, args2.GetPyObject()));
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56
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57 std::string traceback;
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58 if (lock.HasErrorOccurred(traceback))
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59 {
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60 OrthancPlugins::LogError("Error in the Python on-change callback, "
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61 "traceback:\n" + traceback);
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62 return OrthancPluginErrorCode_Plugin;
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63 }
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64 else
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65 {
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66 return OrthancPluginErrorCode_Success;
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67 }
0
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68 }
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69 catch (OrthancPlugins::PluginException& e)
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70 {
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71 return e.GetErrorCode();
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72 }
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73 }
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76 PyObject* RegisterOnStoredInstanceCallback(PyObject* module, PyObject* args)
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77 {
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78 // The GIL is locked at this point (no need to create "PythonLock")
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79
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80 // https://docs.python.org/3/extending/extending.html#calling-python-functions-from-c
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81 PyObject* callback = NULL;
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82
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83 if (!PyArg_ParseTuple(args, "O", &callback) ||
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84 callback == NULL)
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85 {
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86 PyErr_SetString(PyExc_ValueError, "Expected a callback function");
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87 return NULL;
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88 }
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89
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90 if (storedInstanceCallback_ != NULL)
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91 {
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92 PyErr_SetString(PyExc_RuntimeError, "Can only register one Python on-stored-instance callback");
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93 return NULL;
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94 }
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95
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96 OrthancPlugins::LogInfo("Registering a Python on-stored-instance callback");
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97
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98 OrthancPluginRegisterOnStoredInstanceCallback(
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99 OrthancPlugins::GetGlobalContext(), OnStoredInstanceCallback);
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100
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101 storedInstanceCallback_ = callback;
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102 Py_XINCREF(storedInstanceCallback_);
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103
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104 Py_INCREF(Py_None);
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105 return Py_None;
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106 }
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107
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108
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109 void FinalizeOnStoredInstanceCallback()
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110 {
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111 PythonLock lock;
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112
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113 if (storedInstanceCallback_ != NULL)
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114 {
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115 Py_XDECREF(storedInstanceCallback_);
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116 }
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117 }