Mercurial > hg > orthanc-python
annotate Sources/OnStoredInstanceCallback.cpp @ 56:23f3099bed47
upgrade to year 2021
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 06 Jan 2021 18:17:53 +0100 |
| parents | ee76cced46a5 |
| children | 32de70a1e4c7 |
| rev | line source |
|---|---|
| 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 */)); | |
| 46 PyObject *pInst = PyObject_CallObject(GetOrthancPluginDicomInstanceType(), args.GetPyObject()); | |
| 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 } |