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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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26
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27
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28 static PyObject* storedInstanceCallback_ = NULL;
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29
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30
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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 return OrthancPluginErrorCode_Success;
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57 }
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58 catch (OrthancPlugins::PluginException& e)
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59 {
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60 return e.GetErrorCode();
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61 }
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62 }
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63
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64
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65 PyObject* RegisterOnStoredInstanceCallback(PyObject* module, PyObject* args)
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66 {
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67 // The GIL is locked at this point (no need to create "PythonLock")
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68
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69 // https://docs.python.org/3/extending/extending.html#calling-python-functions-from-c
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70 PyObject* callback = NULL;
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71
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72 if (!PyArg_ParseTuple(args, "O", &callback) ||
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73 callback == NULL)
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74 {
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75 PyErr_SetString(PyExc_ValueError, "Expected a callback function");
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76 return NULL;
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77 }
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78
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79 if (storedInstanceCallback_ != NULL)
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80 {
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81 PyErr_SetString(PyExc_RuntimeError, "Can only register one Python on-stored-instance callback");
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82 return NULL;
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83 }
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84
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85 OrthancPlugins::LogInfo("Registering a Python on-stored-instance callback");
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86
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87 OrthancPluginRegisterOnStoredInstanceCallback(
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88 OrthancPlugins::GetGlobalContext(), OnStoredInstanceCallback);
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89
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90 storedInstanceCallback_ = callback;
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91 Py_XINCREF(storedInstanceCallback_);
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92
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93 Py_INCREF(Py_None);
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94 return Py_None;
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95 }
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96
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97
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98 void FinalizeOnStoredInstanceCallback()
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99 {
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100 PythonLock lock;
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101
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102 if (storedInstanceCallback_ != NULL)
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103 {
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104 Py_XDECREF(storedInstanceCallback_);
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105 }
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106 }
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