Mercurial > hg > orthanc-python
annotate Sources/OnStoredInstanceCallback.cpp @ 63:32de70a1e4c7
New functions from the SDK wrapped in Python: CreateDicom, RegisterFindCallback, RegisterMoveCallback
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 10 Jun 2021 18:19:27 +0200 |
parents | 23f3099bed47 |
children | 0b3ef425db31 |
rev | line source |
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0 | 1 /** |
2 * Python plugin for Orthanc | |
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3 * Copyright (C) 2020-2021 Osimis S.A., Belgium |
0 | 4 * |
5 * This program is free software: you can redistribute it and/or | |
6 * modify it under the terms of the GNU Affero General Public License | |
7 * as published by the Free Software Foundation, either version 3 of | |
8 * the License, or (at your option) any later version. | |
9 * | |
10 * This program is distributed in the hope that it will be useful, but | |
11 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 * Affero General Public License for more details. | |
14 * | |
15 * You should have received a copy of the GNU Affero General Public License | |
16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 **/ | |
18 | |
19 | |
20 #include "OnStoredInstanceCallback.h" | |
21 | |
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22 #include "PythonString.h" |
0 | 23 #include "Autogenerated/sdk.h" |
24 | |
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25 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h" |
0 | 26 |
27 | |
28 static PyObject* storedInstanceCallback_ = NULL; | |
29 | |
30 | |
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31 static OrthancPluginErrorCode OnStoredInstanceCallback(const OrthancPluginDicomInstance *instance, |
0 | 32 const char *instanceId) |
33 { | |
34 try | |
35 { | |
36 PythonLock lock; | |
37 | |
38 /** | |
39 * Construct an instance object of the "orthanc.RestOutput" | |
40 * class. This is done by calling the constructor function | |
41 * "sdk_OrthancPluginRestOutput_Type". | |
42 **/ | |
43 PythonObject args(lock, PyTuple_New(2)); | |
44 PyTuple_SetItem(args.GetPyObject(), 0, PyLong_FromSsize_t((intptr_t) instance)); | |
45 PyTuple_SetItem(args.GetPyObject(), 1, PyBool_FromLong(true /* borrowed, don't destruct */)); | |
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New functions from the SDK wrapped in Python: CreateDicom, RegisterFindCallback, RegisterMoveCallback
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46 PyObject *pInst = PyObject_CallObject((PyObject*) GetOrthancPluginDicomInstanceType(), args.GetPyObject()); |
0 | 47 |
48 /** | |
49 * Construct the arguments tuple (output, uri) | |
50 **/ | |
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51 PythonString str(lock, instanceId); |
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52 |
0 | 53 PythonObject args2(lock, PyTuple_New(2)); |
54 PyTuple_SetItem(args2.GetPyObject(), 0, pInst); | |
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55 PyTuple_SetItem(args2.GetPyObject(), 1, str.Release()); |
0 | 56 |
57 PythonObject result(lock, PyObject_CallObject(storedInstanceCallback_, args2.GetPyObject())); | |
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58 |
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59 std::string traceback; |
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60 if (lock.HasErrorOccurred(traceback)) |
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61 { |
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62 OrthancPlugins::LogError("Error in the Python on-change callback, " |
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63 "traceback:\n" + traceback); |
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64 return OrthancPluginErrorCode_Plugin; |
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65 } |
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66 else |
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67 { |
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68 return OrthancPluginErrorCode_Success; |
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69 } |
0 | 70 } |
71 catch (OrthancPlugins::PluginException& e) | |
72 { | |
73 return e.GetErrorCode(); | |
74 } | |
75 } | |
76 | |
77 | |
78 PyObject* RegisterOnStoredInstanceCallback(PyObject* module, PyObject* args) | |
79 { | |
80 // The GIL is locked at this point (no need to create "PythonLock") | |
81 | |
82 // https://docs.python.org/3/extending/extending.html#calling-python-functions-from-c | |
83 PyObject* callback = NULL; | |
84 | |
85 if (!PyArg_ParseTuple(args, "O", &callback) || | |
86 callback == NULL) | |
87 { | |
88 PyErr_SetString(PyExc_ValueError, "Expected a callback function"); | |
89 return NULL; | |
90 } | |
91 | |
92 if (storedInstanceCallback_ != NULL) | |
93 { | |
94 PyErr_SetString(PyExc_RuntimeError, "Can only register one Python on-stored-instance callback"); | |
95 return NULL; | |
96 } | |
97 | |
98 OrthancPlugins::LogInfo("Registering a Python on-stored-instance callback"); | |
99 | |
100 OrthancPluginRegisterOnStoredInstanceCallback( | |
101 OrthancPlugins::GetGlobalContext(), OnStoredInstanceCallback); | |
102 | |
103 storedInstanceCallback_ = callback; | |
104 Py_XINCREF(storedInstanceCallback_); | |
105 | |
106 Py_INCREF(Py_None); | |
107 return Py_None; | |
108 } | |
109 | |
110 | |
111 void FinalizeOnStoredInstanceCallback() | |
112 { | |
113 PythonLock lock; | |
114 | |
115 if (storedInstanceCallback_ != NULL) | |
116 { | |
117 Py_XDECREF(storedInstanceCallback_); | |
118 } | |
119 } |