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5fa16feb PP |
1 | /* |
2 | * The MIT License (MIT) | |
3 | * | |
4 | * Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com> | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | ||
25 | #include "logging/comp-logging.h" | |
26 | ||
27 | /* | |
28 | * This hash table associates a BT component class object address to a | |
29 | * user-defined Python class (PyObject *). The keys and values are NOT | |
30 | * owned by this hash table. The Python class objects are owned by the | |
31 | * Python module, which should not be unloaded until it is not possible | |
32 | * to create a user Python component anyway. | |
33 | * | |
34 | * This hash table is written to when a user-defined Python component | |
35 | * class is created by one of the bt_bt2_component_class_*_create() | |
36 | * functions. | |
37 | * | |
38 | * This function is read from when a user calls bt_component_create() | |
39 | * with a component class pointer created by one of the functions above. | |
40 | * In this case, the original Python class needs to be found to | |
41 | * instantiate it and associate the created Python component object with | |
42 | * a BT component object instance. | |
43 | */ | |
44 | ||
45 | static GHashTable *bt_cc_ptr_to_py_cls; | |
46 | ||
47 | static | |
48 | void register_cc_ptr_to_py_cls(struct bt_component_class *bt_cc, | |
49 | PyObject *py_cls) | |
50 | { | |
51 | if (!bt_cc_ptr_to_py_cls) { | |
52 | /* | |
53 | * Lazy-initializing this GHashTable because GLib | |
54 | * might not be initialized yet and it needs to be | |
55 | * before we call g_hash_table_new() | |
56 | */ | |
57 | BT_LOGD_STR("Creating native component class to Python component class hash table."); | |
58 | bt_cc_ptr_to_py_cls = g_hash_table_new(g_direct_hash, g_direct_equal); | |
59 | BT_ASSERT(bt_cc_ptr_to_py_cls); | |
60 | } | |
61 | ||
62 | g_hash_table_insert(bt_cc_ptr_to_py_cls, (gpointer) bt_cc, | |
63 | (gpointer) py_cls); | |
64 | } | |
65 | ||
66 | static | |
67 | PyObject *lookup_cc_ptr_to_py_cls(const bt_component_class *bt_cc) | |
68 | { | |
69 | if (!bt_cc_ptr_to_py_cls) { | |
70 | BT_LOGW("Cannot look up Python component class because hash table is NULL: " | |
71 | "comp-cls-addr=%p", bt_cc); | |
72 | return NULL; | |
73 | } | |
74 | ||
75 | return (PyObject *) g_hash_table_lookup(bt_cc_ptr_to_py_cls, | |
76 | (gconstpointer) bt_cc); | |
77 | } | |
78 | ||
5fa16feb PP |
79 | /* Library destructor */ |
80 | ||
81 | __attribute__((destructor)) | |
82 | static | |
83 | void native_comp_class_dtor(void) { | |
84 | /* Destroy component class association hash table */ | |
85 | if (bt_cc_ptr_to_py_cls) { | |
86 | BT_LOGD_STR("Destroying native component class to Python component class hash table."); | |
87 | g_hash_table_destroy(bt_cc_ptr_to_py_cls); | |
88 | } | |
89 | } | |
90 | ||
5fa16feb PP |
91 | static inline |
92 | int py_exc_to_status(bt_self_component_class *self_component_class, | |
93 | bt_self_component *self_component, | |
94 | bt_self_message_iterator *self_message_iterator, | |
95 | const char *module_name, int active_log_level) | |
96 | { | |
97 | int status = __BT_FUNC_STATUS_OK; | |
98 | PyObject *exc = PyErr_Occurred(); | |
99 | ||
100 | if (!exc) { | |
101 | goto end; | |
102 | } | |
103 | ||
104 | if (PyErr_GivenExceptionMatches(exc, | |
105 | py_mod_bt2_exc_try_again_type)) { | |
106 | status = __BT_FUNC_STATUS_AGAIN; | |
107 | } else if (PyErr_GivenExceptionMatches(exc, | |
108 | py_mod_bt2_exc_stop_type)) { | |
109 | status = __BT_FUNC_STATUS_END; | |
110 | } else if (PyErr_GivenExceptionMatches(exc, | |
111 | py_mod_bt2_exc_unknown_object_type)) { | |
112 | status = __BT_FUNC_STATUS_UNKNOWN_OBJECT; | |
113 | } else { | |
114 | /* | |
115 | * Unknown exception: convert to general error. | |
116 | * | |
117 | * Because we only want to fetch the log level when | |
118 | * we actually get an exception, and not systematically | |
119 | * when we call py_exc_to_status() (as py_exc_to_status() | |
120 | * can return `__BT_FUNC_STATUS_OK`), we get it here | |
121 | * depending on the actor's type. | |
122 | */ | |
123 | if (self_component) { | |
124 | active_log_level = get_self_component_log_level( | |
125 | self_component); | |
126 | } else if (self_message_iterator) { | |
127 | active_log_level = get_self_message_iterator_log_level( | |
128 | self_message_iterator); | |
129 | } | |
130 | ||
131 | BT_ASSERT(active_log_level != -1); | |
132 | log_exception_and_maybe_append_error(BT_LOG_WARNING, | |
133 | active_log_level, true, | |
134 | self_component_class, self_component, | |
135 | self_message_iterator, module_name); | |
136 | ||
137 | if (PyErr_GivenExceptionMatches(exc, | |
138 | py_mod_bt2_exc_memory_error)) { | |
139 | status = __BT_FUNC_STATUS_MEMORY_ERROR; | |
140 | } else { | |
141 | status = __BT_FUNC_STATUS_ERROR; | |
142 | } | |
143 | } | |
144 | ||
145 | end: | |
146 | PyErr_Clear(); | |
147 | return status; | |
148 | } | |
149 | ||
150 | static | |
151 | int py_exc_to_status_component_class( | |
152 | bt_self_component_class *self_component_class, | |
153 | int active_log_level) | |
154 | { | |
155 | return py_exc_to_status(self_component_class, NULL, NULL, NULL, | |
156 | active_log_level); | |
157 | } | |
158 | ||
159 | static | |
160 | int py_exc_to_status_component(bt_self_component *self_component) | |
161 | { | |
162 | return py_exc_to_status(NULL, self_component, NULL, NULL, -1); | |
163 | } | |
164 | ||
165 | static | |
166 | int py_exc_to_status_message_iterator( | |
167 | bt_self_message_iterator *self_message_iterator) | |
168 | { | |
169 | return py_exc_to_status(NULL, NULL, self_message_iterator, NULL, -1); | |
170 | } | |
171 | ||
172 | /* Component class proxy methods (delegate to the attached Python object) */ | |
173 | ||
174 | static | |
175 | bt_component_class_init_method_status component_class_init( | |
176 | bt_self_component *self_component, | |
177 | void *self_component_v, | |
178 | swig_type_info *self_comp_cls_type_swig_type, | |
179 | const bt_value *params, | |
180 | void *init_method_data) | |
181 | { | |
182 | const bt_component *component = bt_self_component_as_component(self_component); | |
183 | const bt_component_class *component_class = bt_component_borrow_class_const(component); | |
184 | bt_component_class_init_method_status status = __BT_FUNC_STATUS_OK; | |
185 | PyObject *py_cls = NULL; | |
186 | PyObject *py_comp = NULL; | |
187 | PyObject *py_params_ptr = NULL; | |
188 | PyObject *py_comp_ptr = NULL; | |
189 | bt_logging_level log_level = get_self_component_log_level( | |
190 | self_component); | |
191 | ||
192 | (void) init_method_data; | |
193 | ||
194 | BT_ASSERT(self_component); | |
195 | BT_ASSERT(self_component_v); | |
196 | BT_ASSERT(self_comp_cls_type_swig_type); | |
197 | ||
198 | /* | |
199 | * Get the user-defined Python class which created this | |
200 | * component's class in the first place (borrowed | |
201 | * reference). | |
202 | */ | |
203 | py_cls = lookup_cc_ptr_to_py_cls(component_class); | |
204 | if (!py_cls) { | |
205 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
206 | "Cannot find Python class associated to native component class: " | |
207 | "comp-cls-addr=%p", component_class); | |
208 | goto error; | |
209 | } | |
210 | ||
211 | /* Parameters pointer -> SWIG pointer Python object */ | |
212 | py_params_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(params), | |
213 | SWIGTYPE_p_bt_value, 0); | |
214 | if (!py_params_ptr) { | |
215 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
216 | "Failed to create a SWIG pointer object."); | |
217 | goto error; | |
218 | } | |
219 | ||
220 | py_comp_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(self_component_v), | |
221 | self_comp_cls_type_swig_type, 0); | |
222 | if (!py_comp_ptr) { | |
223 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
224 | "Failed to create a SWIG pointer object."); | |
225 | goto error; | |
226 | } | |
227 | ||
228 | /* | |
229 | * Do the equivalent of this: | |
230 | * | |
231 | * py_comp = py_cls._bt_init_from_native(py_comp_ptr, py_params_ptr) | |
232 | * | |
233 | * _UserComponentType._bt_init_from_native() calls the Python | |
234 | * component object's __init__() function. | |
235 | */ | |
236 | py_comp = PyObject_CallMethod(py_cls, | |
237 | "_bt_init_from_native", "(OO)", py_comp_ptr, py_params_ptr); | |
238 | if (!py_comp) { | |
239 | BT_COMP_LOG_CUR_LVL(BT_LOG_WARNING, log_level, self_component, | |
240 | "Failed to call Python class's _bt_init_from_native() method: " | |
241 | "py-cls-addr=%p", py_cls); | |
242 | status = py_exc_to_status_component(self_component); | |
243 | goto end; | |
244 | } | |
245 | ||
246 | /* | |
247 | * Our user Python component object is now fully created and | |
248 | * initialized by the user. Since we just created it, this | |
249 | * native component is its only (persistent) owner. | |
250 | */ | |
251 | bt_self_component_set_data(self_component, py_comp); | |
252 | py_comp = NULL; | |
253 | goto end; | |
254 | ||
255 | error: | |
256 | status = __BT_FUNC_STATUS_ERROR; | |
257 | ||
258 | /* | |
259 | * Clear any exception: we're returning a bad status anyway. If | |
260 | * this call originated from Python (creation from a plugin's | |
261 | * component class, for example), then the user gets an | |
262 | * appropriate creation error. | |
263 | */ | |
264 | PyErr_Clear(); | |
265 | ||
266 | end: | |
267 | Py_XDECREF(py_comp); | |
268 | Py_XDECREF(py_params_ptr); | |
269 | Py_XDECREF(py_comp_ptr); | |
270 | return status; | |
271 | } | |
272 | ||
273 | /* | |
274 | * Method of bt_component_class_source to initialize a bt_self_component_source | |
275 | * of that class. | |
276 | */ | |
277 | ||
278 | static | |
279 | bt_component_class_init_method_status component_class_source_init( | |
280 | bt_self_component_source *self_component_source, | |
281 | const bt_value *params, void *init_method_data) | |
282 | { | |
283 | bt_self_component *self_component = bt_self_component_source_as_self_component(self_component_source); | |
284 | return component_class_init( | |
285 | self_component, | |
286 | self_component_source, | |
287 | SWIGTYPE_p_bt_self_component_source, | |
288 | params, init_method_data); | |
289 | } | |
290 | ||
291 | static | |
292 | bt_component_class_init_method_status component_class_filter_init( | |
293 | bt_self_component_filter *self_component_filter, | |
294 | const bt_value *params, void *init_method_data) | |
295 | { | |
296 | bt_self_component *self_component = bt_self_component_filter_as_self_component(self_component_filter); | |
297 | return component_class_init( | |
298 | self_component, | |
299 | self_component_filter, | |
300 | SWIGTYPE_p_bt_self_component_filter, | |
301 | params, init_method_data); | |
302 | } | |
303 | ||
304 | static | |
305 | bt_component_class_init_method_status component_class_sink_init( | |
306 | bt_self_component_sink *self_component_sink, | |
307 | const bt_value *params, void *init_method_data) | |
308 | { | |
309 | bt_self_component *self_component = bt_self_component_sink_as_self_component(self_component_sink); | |
310 | return component_class_init( | |
311 | self_component, | |
312 | self_component_sink, | |
313 | SWIGTYPE_p_bt_self_component_sink, | |
314 | params, init_method_data); | |
315 | } | |
316 | ||
317 | static | |
318 | void component_class_finalize(bt_self_component *self_component) | |
319 | { | |
320 | PyObject *py_comp = bt_self_component_get_data(self_component); | |
321 | BT_ASSERT(py_comp); | |
322 | ||
323 | /* Call user's _user_finalize() method */ | |
324 | PyObject *py_method_result = PyObject_CallMethod(py_comp, | |
325 | "_user_finalize", NULL); | |
326 | ||
327 | if (PyErr_Occurred()) { | |
328 | bt_logging_level log_level = get_self_component_log_level( | |
329 | self_component); | |
330 | ||
331 | BT_COMP_LOG_CUR_LVL(BT_LOG_WARNING, log_level, self_component, | |
332 | "User component's _user_finalize() method raised an exception: ignoring:"); | |
333 | logw_exception(log_level); | |
334 | } | |
335 | ||
336 | /* | |
337 | * Ignore any exception raised by the _user_finalize() method | |
338 | * because it won't change anything at this point: the component | |
339 | * is being destroyed anyway. | |
340 | */ | |
341 | PyErr_Clear(); | |
342 | Py_XDECREF(py_method_result); | |
343 | Py_DECREF(py_comp); | |
344 | } | |
345 | ||
346 | static | |
347 | void component_class_source_finalize(bt_self_component_source *self_component_source) | |
348 | { | |
349 | bt_self_component *self_component = bt_self_component_source_as_self_component(self_component_source); | |
350 | component_class_finalize(self_component); | |
351 | } | |
352 | ||
353 | static | |
354 | void component_class_filter_finalize(bt_self_component_filter *self_component_filter) | |
355 | { | |
356 | bt_self_component *self_component = bt_self_component_filter_as_self_component(self_component_filter); | |
357 | component_class_finalize(self_component); | |
358 | } | |
359 | ||
360 | static | |
361 | void component_class_sink_finalize(bt_self_component_sink *self_component_sink) | |
362 | { | |
363 | bt_self_component *self_component = bt_self_component_sink_as_self_component(self_component_sink); | |
364 | component_class_finalize(self_component); | |
365 | } | |
366 | ||
367 | static | |
368 | bt_bool component_class_can_seek_beginning( | |
369 | bt_self_message_iterator *self_message_iterator) | |
370 | { | |
371 | PyObject *py_iter; | |
372 | PyObject *py_result = NULL; | |
373 | bt_bool can_seek_beginning = false; | |
374 | ||
375 | py_iter = bt_self_message_iterator_get_data(self_message_iterator); | |
376 | BT_ASSERT(py_iter); | |
377 | ||
378 | py_result = PyObject_GetAttrString(py_iter, "_bt_can_seek_beginning_from_native"); | |
379 | ||
380 | BT_ASSERT(!py_result || PyBool_Check(py_result)); | |
381 | ||
382 | if (py_result) { | |
383 | can_seek_beginning = PyObject_IsTrue(py_result); | |
384 | } else { | |
385 | /* | |
386 | * Once can_seek_beginning can report errors, convert the | |
387 | * exception to a status. For now, log and return false; | |
388 | */ | |
389 | loge_exception_message_iterator(self_message_iterator); | |
390 | PyErr_Clear(); | |
391 | } | |
392 | ||
393 | Py_XDECREF(py_result); | |
394 | ||
395 | return can_seek_beginning; | |
396 | } | |
397 | ||
398 | static | |
399 | bt_component_class_message_iterator_seek_beginning_method_status | |
400 | component_class_seek_beginning(bt_self_message_iterator *self_message_iterator) | |
401 | { | |
402 | PyObject *py_iter; | |
403 | PyObject *py_result; | |
404 | bt_component_class_message_iterator_seek_beginning_method_status status; | |
405 | ||
406 | py_iter = bt_self_message_iterator_get_data(self_message_iterator); | |
407 | BT_ASSERT(py_iter); | |
408 | py_result = PyObject_CallMethod(py_iter, "_bt_seek_beginning_from_native", | |
409 | NULL); | |
410 | BT_ASSERT(!py_result || py_result == Py_None); | |
411 | status = py_exc_to_status_message_iterator(self_message_iterator); | |
412 | Py_XDECREF(py_result); | |
413 | return status; | |
414 | } | |
415 | ||
416 | static | |
417 | bt_component_class_port_connected_method_status component_class_port_connected( | |
418 | bt_self_component *self_component, | |
419 | void *self_component_port, | |
420 | swig_type_info *self_component_port_swig_type, | |
421 | bt_port_type self_component_port_type, | |
422 | const void *other_port, | |
423 | swig_type_info *other_port_swig_type) | |
424 | { | |
425 | bt_component_class_port_connected_method_status status; | |
426 | PyObject *py_comp = NULL; | |
427 | PyObject *py_self_port_ptr = NULL; | |
428 | PyObject *py_other_port_ptr = NULL; | |
429 | PyObject *py_method_result = NULL; | |
430 | bt_logging_level log_level = get_self_component_log_level( | |
431 | self_component); | |
432 | ||
433 | py_comp = bt_self_component_get_data(self_component); | |
434 | BT_ASSERT(py_comp); | |
435 | py_self_port_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(self_component_port), | |
436 | self_component_port_swig_type, 0); | |
437 | if (!py_self_port_ptr) { | |
438 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
439 | "Failed to create a SWIG pointer object."); | |
440 | status = __BT_FUNC_STATUS_MEMORY_ERROR; | |
441 | goto end; | |
442 | } | |
443 | ||
444 | py_other_port_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(other_port), | |
445 | other_port_swig_type, 0); | |
446 | if (!py_other_port_ptr) { | |
447 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
448 | "Failed to create a SWIG pointer object."); | |
449 | status = __BT_FUNC_STATUS_MEMORY_ERROR; | |
450 | goto end; } | |
451 | ||
452 | py_method_result = PyObject_CallMethod(py_comp, | |
453 | "_bt_port_connected_from_native", "(OiO)", py_self_port_ptr, | |
454 | self_component_port_type, py_other_port_ptr); | |
455 | BT_ASSERT(!py_method_result || py_method_result == Py_None); | |
456 | status = py_exc_to_status_component(self_component); | |
457 | ||
458 | end: | |
459 | Py_XDECREF(py_self_port_ptr); | |
460 | Py_XDECREF(py_other_port_ptr); | |
461 | Py_XDECREF(py_method_result); | |
462 | return status; | |
463 | } | |
464 | ||
465 | static | |
466 | bt_component_class_port_connected_method_status | |
467 | component_class_source_output_port_connected( | |
468 | bt_self_component_source *self_component_source, | |
469 | bt_self_component_port_output *self_component_port_output, | |
470 | const bt_port_input *other_port_input) | |
471 | { | |
472 | bt_self_component *self_component = bt_self_component_source_as_self_component(self_component_source); | |
473 | ||
474 | return component_class_port_connected( | |
475 | self_component, | |
476 | self_component_port_output, | |
477 | SWIGTYPE_p_bt_self_component_port_output, | |
478 | BT_PORT_TYPE_OUTPUT, | |
479 | other_port_input, | |
480 | SWIGTYPE_p_bt_port_input); | |
481 | } | |
482 | ||
483 | static | |
484 | bt_component_class_port_connected_method_status | |
485 | component_class_filter_input_port_connected( | |
486 | bt_self_component_filter *self_component_filter, | |
487 | bt_self_component_port_input *self_component_port_input, | |
488 | const bt_port_output *other_port_output) | |
489 | { | |
490 | bt_self_component *self_component = bt_self_component_filter_as_self_component(self_component_filter); | |
491 | ||
492 | return component_class_port_connected( | |
493 | self_component, | |
494 | self_component_port_input, | |
495 | SWIGTYPE_p_bt_self_component_port_input, | |
496 | BT_PORT_TYPE_INPUT, | |
497 | other_port_output, | |
498 | SWIGTYPE_p_bt_port_output); | |
499 | } | |
500 | ||
501 | static | |
502 | bt_component_class_port_connected_method_status | |
503 | component_class_filter_output_port_connected( | |
504 | bt_self_component_filter *self_component_filter, | |
505 | bt_self_component_port_output *self_component_port_output, | |
506 | const bt_port_input *other_port_input) | |
507 | { | |
508 | bt_self_component *self_component = bt_self_component_filter_as_self_component(self_component_filter); | |
509 | ||
510 | return component_class_port_connected( | |
511 | self_component, | |
512 | self_component_port_output, | |
513 | SWIGTYPE_p_bt_self_component_port_output, | |
514 | BT_PORT_TYPE_OUTPUT, | |
515 | other_port_input, | |
516 | SWIGTYPE_p_bt_port_input); | |
517 | } | |
518 | ||
519 | static | |
520 | bt_component_class_port_connected_method_status | |
521 | component_class_sink_input_port_connected( | |
522 | bt_self_component_sink *self_component_sink, | |
523 | bt_self_component_port_input *self_component_port_input, | |
524 | const bt_port_output *other_port_output) | |
525 | { | |
526 | bt_self_component *self_component = bt_self_component_sink_as_self_component(self_component_sink); | |
527 | ||
528 | return component_class_port_connected( | |
529 | self_component, | |
530 | self_component_port_input, | |
531 | SWIGTYPE_p_bt_self_component_port_input, | |
532 | BT_PORT_TYPE_INPUT, | |
533 | other_port_output, | |
534 | SWIGTYPE_p_bt_port_output); | |
535 | } | |
536 | ||
537 | static | |
538 | bt_component_class_sink_graph_is_configured_method_status | |
539 | component_class_sink_graph_is_configured( | |
540 | bt_self_component_sink *self_component_sink) | |
541 | { | |
542 | PyObject *py_comp = NULL; | |
543 | PyObject *py_method_result = NULL; | |
544 | bt_component_class_sink_graph_is_configured_method_status status = __BT_FUNC_STATUS_OK; | |
545 | bt_self_component *self_component = bt_self_component_sink_as_self_component(self_component_sink); | |
546 | ||
547 | py_comp = bt_self_component_get_data(self_component); | |
548 | py_method_result = PyObject_CallMethod(py_comp, | |
549 | "_bt_graph_is_configured_from_native", NULL); | |
550 | BT_ASSERT(!py_method_result || py_method_result == Py_None); | |
551 | status = py_exc_to_status_component(self_component); | |
552 | Py_XDECREF(py_method_result); | |
553 | return status; | |
554 | } | |
555 | ||
556 | static | |
557 | bt_component_class_query_method_status component_class_query( | |
558 | const bt_component_class *component_class, | |
559 | bt_self_component_class *self_component_class, | |
560 | bt_private_query_executor *priv_query_executor, | |
561 | const char *object, const bt_value *params, | |
562 | const bt_value **result) | |
563 | { | |
564 | PyObject *py_cls = NULL; | |
565 | PyObject *py_params_ptr = NULL; | |
566 | PyObject *py_priv_query_exec_ptr = NULL; | |
567 | PyObject *py_query_func = NULL; | |
568 | PyObject *py_object = NULL; | |
569 | PyObject *py_results_addr = NULL; | |
570 | bt_component_class_query_method_status status = __BT_FUNC_STATUS_OK; | |
571 | const bt_query_executor *query_exec = | |
572 | bt_private_query_executor_as_query_executor_const( | |
573 | priv_query_executor); | |
574 | bt_logging_level log_level = | |
575 | bt_query_executor_get_logging_level(query_exec); | |
576 | ||
577 | py_cls = lookup_cc_ptr_to_py_cls(component_class); | |
578 | if (!py_cls) { | |
579 | BT_LOG_WRITE_CUR_LVL(BT_LOG_ERROR, log_level, BT_LOG_TAG, | |
580 | "Cannot find Python class associated to native component class: " | |
581 | "comp-cls-addr=%p", component_class); | |
582 | goto error; | |
583 | } | |
584 | ||
585 | py_params_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(params), | |
586 | SWIGTYPE_p_bt_value, 0); | |
587 | if (!py_params_ptr) { | |
588 | BT_LOG_WRITE_CUR_LVL(BT_LOG_ERROR, log_level, BT_LOG_TAG, | |
589 | "Failed to create a SWIG pointer object."); | |
590 | goto error; | |
591 | } | |
592 | ||
593 | py_priv_query_exec_ptr = SWIG_NewPointerObj( | |
594 | SWIG_as_voidptr(priv_query_executor), | |
595 | SWIGTYPE_p_bt_private_query_executor, 0); | |
596 | if (!py_priv_query_exec_ptr) { | |
597 | BT_LOG_WRITE_CUR_LVL(BT_LOG_ERROR, log_level, BT_LOG_TAG, | |
598 | "Failed to create a SWIG pointer object."); | |
599 | goto error; | |
600 | } | |
601 | ||
602 | py_object = SWIG_FromCharPtr(object); | |
603 | if (!py_object) { | |
604 | BT_LOG_WRITE_CUR_LVL(BT_LOG_ERROR, log_level, BT_LOG_TAG, | |
605 | "Failed to create a Python string."); | |
606 | goto error; | |
607 | } | |
608 | ||
609 | py_results_addr = PyObject_CallMethod(py_cls, | |
610 | "_bt_query_from_native", "(OOO)", py_priv_query_exec_ptr, | |
611 | py_object, py_params_ptr); | |
612 | if (!py_results_addr) { | |
613 | BT_LOG_WRITE_CUR_LVL(BT_LOG_WARNING, log_level, BT_LOG_TAG, | |
614 | "Failed to call Python class's _bt_query_from_native() method: " | |
615 | "py-cls-addr=%p", py_cls); | |
616 | status = py_exc_to_status_component_class(self_component_class, | |
617 | log_level); | |
618 | goto end; | |
619 | } | |
620 | ||
621 | /* | |
622 | * The returned object, on success, is an integer object | |
623 | * (PyLong) containing the address of a BT value object (new | |
624 | * reference). | |
625 | */ | |
626 | *result = PyLong_AsVoidPtr(py_results_addr); | |
627 | BT_ASSERT(!PyErr_Occurred()); | |
628 | BT_ASSERT(*result); | |
629 | goto end; | |
630 | ||
631 | error: | |
632 | PyErr_Clear(); | |
633 | status = __BT_FUNC_STATUS_ERROR; | |
634 | ||
635 | end: | |
636 | Py_XDECREF(py_params_ptr); | |
637 | Py_XDECREF(py_priv_query_exec_ptr); | |
638 | Py_XDECREF(py_query_func); | |
639 | Py_XDECREF(py_object); | |
640 | Py_XDECREF(py_results_addr); | |
641 | return status; | |
642 | } | |
643 | ||
644 | static | |
645 | bt_component_class_query_method_status component_class_source_query( | |
646 | bt_self_component_class_source *self_component_class_source, | |
647 | bt_private_query_executor *priv_query_executor, | |
648 | const char *object, const bt_value *params, | |
649 | const bt_value **result) | |
650 | { | |
651 | const bt_component_class_source *component_class_source = bt_self_component_class_source_as_component_class_source(self_component_class_source); | |
652 | const bt_component_class *component_class = bt_component_class_source_as_component_class_const(component_class_source); | |
653 | bt_self_component_class *self_component_class = bt_self_component_class_source_as_self_component_class(self_component_class_source); | |
654 | ||
655 | return component_class_query(component_class, self_component_class, | |
656 | priv_query_executor, object, params, result); | |
657 | } | |
658 | ||
659 | static | |
660 | bt_component_class_query_method_status component_class_filter_query( | |
661 | bt_self_component_class_filter *self_component_class_filter, | |
662 | bt_private_query_executor *priv_query_executor, | |
663 | const char *object, const bt_value *params, | |
664 | const bt_value **result) | |
665 | { | |
666 | const bt_component_class_filter *component_class_filter = bt_self_component_class_filter_as_component_class_filter(self_component_class_filter); | |
667 | const bt_component_class *component_class = bt_component_class_filter_as_component_class_const(component_class_filter); | |
668 | bt_self_component_class *self_component_class = bt_self_component_class_filter_as_self_component_class(self_component_class_filter); | |
669 | ||
670 | return component_class_query(component_class, self_component_class, | |
671 | priv_query_executor, object, params, result); | |
672 | } | |
673 | ||
674 | static | |
675 | bt_component_class_query_method_status component_class_sink_query( | |
676 | bt_self_component_class_sink *self_component_class_sink, | |
677 | bt_private_query_executor *priv_query_executor, | |
678 | const char *object, const bt_value *params, | |
679 | const bt_value **result) | |
680 | { | |
681 | const bt_component_class_sink *component_class_sink = bt_self_component_class_sink_as_component_class_sink(self_component_class_sink); | |
682 | const bt_component_class *component_class = bt_component_class_sink_as_component_class_const(component_class_sink); | |
683 | bt_self_component_class *self_component_class = bt_self_component_class_sink_as_self_component_class(self_component_class_sink); | |
684 | ||
685 | return component_class_query(component_class, self_component_class, | |
686 | priv_query_executor, object, params, result); | |
687 | } | |
688 | ||
689 | static | |
690 | bt_component_class_message_iterator_init_method_status | |
691 | component_class_message_iterator_init( | |
692 | bt_self_message_iterator *self_message_iterator, | |
693 | bt_self_component *self_component, | |
694 | bt_self_component_port_output *self_component_port_output) | |
695 | { | |
696 | bt_component_class_message_iterator_init_method_status status = __BT_FUNC_STATUS_OK; | |
697 | PyObject *py_comp_cls = NULL; | |
698 | PyObject *py_iter_cls = NULL; | |
699 | PyObject *py_iter_ptr = NULL; | |
700 | PyObject *py_component_port_output_ptr = NULL; | |
701 | PyObject *py_init_method_result = NULL; | |
702 | PyObject *py_iter = NULL; | |
703 | PyObject *py_comp; | |
704 | bt_logging_level log_level = get_self_component_log_level( | |
705 | self_component); | |
706 | ||
707 | py_comp = bt_self_component_get_data(self_component); | |
708 | ||
709 | /* Find user's Python message iterator class */ | |
710 | py_comp_cls = PyObject_GetAttrString(py_comp, "__class__"); | |
711 | if (!py_comp_cls) { | |
712 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
713 | "Cannot get Python object's `__class__` attribute."); | |
714 | goto python_error; | |
715 | } | |
716 | ||
717 | py_iter_cls = PyObject_GetAttrString(py_comp_cls, "_iter_cls"); | |
718 | if (!py_iter_cls) { | |
719 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
720 | "Cannot get Python class's `_iter_cls` attribute."); | |
721 | goto python_error; | |
722 | } | |
723 | ||
724 | py_iter_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(self_message_iterator), | |
725 | SWIGTYPE_p_bt_self_message_iterator, 0); | |
726 | if (!py_iter_ptr) { | |
727 | const char *err = "Failed to create a SWIG pointer object."; | |
728 | ||
729 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
730 | "%s", err); | |
731 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_MESSAGE_ITERATOR( | |
732 | self_message_iterator, err); | |
733 | goto error; | |
734 | } | |
735 | ||
736 | /* | |
737 | * Create object with borrowed native message iterator | |
738 | * reference: | |
739 | * | |
740 | * py_iter = py_iter_cls.__new__(py_iter_cls, py_iter_ptr) | |
741 | */ | |
742 | py_iter = PyObject_CallMethod(py_iter_cls, "__new__", | |
743 | "(OO)", py_iter_cls, py_iter_ptr); | |
744 | if (!py_iter) { | |
745 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
746 | "Failed to call Python class's __new__() method: " | |
747 | "py-cls-addr=%p", py_iter_cls); | |
748 | goto python_error; | |
749 | } | |
750 | ||
751 | /* | |
752 | * Initialize object: | |
753 | * | |
754 | * py_iter.__init__(self_output_port) | |
755 | * | |
756 | * through the _init_for_native helper static method. | |
757 | * | |
758 | * At this point, py_iter._ptr is set, so this initialization | |
759 | * function has access to self._component (which gives it the | |
760 | * user Python component object from which the iterator was | |
761 | * created). | |
762 | */ | |
763 | py_component_port_output_ptr = SWIG_NewPointerObj( | |
764 | SWIG_as_voidptr(self_component_port_output), | |
765 | SWIGTYPE_p_bt_self_component_port_output, 0); | |
766 | if (!py_component_port_output_ptr) { | |
767 | const char *err = "Failed to create a SWIG pointer object."; | |
768 | ||
769 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
770 | "%s", err); | |
771 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_MESSAGE_ITERATOR( | |
772 | self_message_iterator, err); | |
773 | goto error; | |
774 | } | |
775 | ||
776 | py_init_method_result = PyObject_CallMethod(py_iter, | |
777 | "_bt_init_from_native", "O", py_component_port_output_ptr); | |
778 | if (!py_init_method_result) { | |
779 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_component, | |
780 | "User's __init__() method failed:"); | |
781 | goto python_error; | |
782 | } | |
783 | ||
784 | /* | |
785 | * Since the Python code can never instantiate a user-defined | |
786 | * message iterator class, the native message iterator | |
787 | * object does NOT belong to a user Python message iterator | |
788 | * object (borrowed reference). However this Python object is | |
789 | * owned by this native message iterator object. | |
790 | * | |
791 | * In the Python world, the lifetime of the native message | |
792 | * iterator is managed by a _GenericMessageIterator | |
793 | * instance: | |
794 | * | |
795 | * _GenericMessageIterator instance: | |
796 | * owns a native bt_message_iterator object (iter) | |
797 | * owns a _UserMessageIterator instance (py_iter) | |
798 | * self._ptr is a borrowed reference to the | |
799 | * native bt_private_connection_private_message_iterator | |
800 | * object (iter) | |
801 | */ | |
802 | bt_self_message_iterator_set_data(self_message_iterator, py_iter); | |
803 | py_iter = NULL; | |
804 | goto end; | |
805 | ||
806 | python_error: | |
807 | /* Handling of errors that cause a Python exception to be set. */ | |
808 | status = py_exc_to_status_message_iterator(self_message_iterator); | |
809 | BT_ASSERT(status != __BT_FUNC_STATUS_OK); | |
810 | goto end; | |
811 | ||
812 | error: | |
813 | /* Handling of errors that don't cause a Python exception to be set. */ | |
814 | status = __BT_FUNC_STATUS_ERROR; | |
815 | ||
816 | end: | |
817 | BT_ASSERT(!PyErr_Occurred()); | |
818 | ||
819 | Py_XDECREF(py_comp_cls); | |
820 | Py_XDECREF(py_iter_cls); | |
821 | Py_XDECREF(py_iter_ptr); | |
822 | Py_XDECREF(py_component_port_output_ptr); | |
823 | Py_XDECREF(py_init_method_result); | |
824 | Py_XDECREF(py_iter); | |
825 | return status; | |
826 | } | |
827 | ||
828 | static | |
829 | bt_component_class_message_iterator_init_method_status | |
830 | component_class_source_message_iterator_init( | |
831 | bt_self_message_iterator *self_message_iterator, | |
832 | bt_self_component_source *self_component_source, | |
833 | bt_self_component_port_output *self_component_port_output) | |
834 | { | |
835 | bt_self_component *self_component = bt_self_component_source_as_self_component(self_component_source); | |
836 | ||
837 | return component_class_message_iterator_init(self_message_iterator, self_component, self_component_port_output); | |
838 | } | |
839 | ||
840 | static | |
841 | bt_component_class_message_iterator_init_method_status | |
842 | component_class_filter_message_iterator_init( | |
843 | bt_self_message_iterator *self_message_iterator, | |
844 | bt_self_component_filter *self_component_filter, | |
845 | bt_self_component_port_output *self_component_port_output) | |
846 | { | |
847 | bt_self_component *self_component = bt_self_component_filter_as_self_component(self_component_filter); | |
848 | ||
849 | return component_class_message_iterator_init(self_message_iterator, self_component, self_component_port_output); | |
850 | } | |
851 | ||
852 | static | |
853 | void component_class_message_iterator_finalize( | |
854 | bt_self_message_iterator *message_iterator) | |
855 | { | |
856 | PyObject *py_message_iter = bt_self_message_iterator_get_data( | |
857 | message_iterator); | |
858 | PyObject *py_method_result = NULL; | |
859 | ||
860 | BT_ASSERT(py_message_iter); | |
861 | ||
862 | /* Call user's _user_finalize() method */ | |
863 | py_method_result = PyObject_CallMethod(py_message_iter, | |
864 | "_user_finalize", NULL); | |
865 | ||
866 | if (PyErr_Occurred()) { | |
867 | bt_self_component *self_comp = | |
868 | bt_self_message_iterator_borrow_component( | |
869 | message_iterator); | |
870 | bt_logging_level log_level = get_self_component_log_level( | |
871 | self_comp); | |
872 | ||
873 | BT_COMP_LOG_CUR_LVL(BT_LOG_WARNING, log_level, self_comp, | |
874 | "User's _user_finalize() method raised an exception: ignoring:"); | |
875 | logw_exception(get_self_message_iterator_log_level( | |
876 | message_iterator)); | |
877 | } | |
878 | ||
879 | /* | |
880 | * Ignore any exception raised by the _user_finalize() method | |
881 | * because it won't change anything at this point: the component | |
882 | * is being destroyed anyway. | |
883 | */ | |
884 | PyErr_Clear(); | |
885 | Py_XDECREF(py_method_result); | |
886 | Py_DECREF(py_message_iter); | |
887 | } | |
888 | ||
889 | /* Valid for both sources and filters. */ | |
890 | ||
891 | static | |
892 | bt_component_class_message_iterator_next_method_status | |
893 | component_class_message_iterator_next( | |
894 | bt_self_message_iterator *message_iterator, | |
895 | bt_message_array_const msgs, uint64_t capacity, | |
896 | uint64_t *count) | |
897 | { | |
898 | bt_component_class_message_iterator_next_method_status status = __BT_FUNC_STATUS_OK; | |
899 | PyObject *py_message_iter = bt_self_message_iterator_get_data(message_iterator); | |
900 | PyObject *py_method_result = NULL; | |
901 | ||
902 | BT_ASSERT(py_message_iter); | |
903 | py_method_result = PyObject_CallMethod(py_message_iter, | |
904 | "_bt_next_from_native", NULL); | |
905 | if (!py_method_result) { | |
906 | status = py_exc_to_status_message_iterator(message_iterator); | |
907 | BT_ASSERT(status != __BT_FUNC_STATUS_OK); | |
908 | goto end; | |
909 | } | |
910 | ||
911 | /* | |
912 | * The returned object, on success, is an integer object | |
913 | * (PyLong) containing the address of a native message | |
914 | * object (which is now ours). | |
915 | */ | |
916 | msgs[0] = PyLong_AsVoidPtr(py_method_result); | |
917 | *count = 1; | |
918 | ||
919 | /* Clear potential overflow error; should never happen */ | |
920 | BT_ASSERT(!PyErr_Occurred()); | |
921 | goto end; | |
922 | ||
923 | end: | |
924 | Py_XDECREF(py_method_result); | |
925 | return status; | |
926 | } | |
927 | ||
928 | static | |
929 | bt_component_class_sink_consume_method_status | |
930 | component_class_sink_consume(bt_self_component_sink *self_component_sink) | |
931 | { | |
932 | bt_self_component *self_component = bt_self_component_sink_as_self_component(self_component_sink); | |
933 | PyObject *py_comp = bt_self_component_get_data(self_component); | |
934 | PyObject *py_method_result = NULL; | |
935 | bt_component_class_sink_consume_method_status status; | |
936 | ||
937 | BT_ASSERT(py_comp); | |
938 | py_method_result = PyObject_CallMethod(py_comp, | |
939 | "_user_consume", NULL); | |
940 | status = py_exc_to_status_component(self_component); | |
941 | BT_ASSERT(py_method_result || status != __BT_FUNC_STATUS_OK); | |
942 | Py_XDECREF(py_method_result); | |
943 | return status; | |
944 | } | |
945 | ||
946 | static | |
947 | int component_class_set_help_and_desc( | |
948 | bt_component_class *component_class, | |
949 | const char *description, const char *help) | |
950 | { | |
951 | int ret; | |
952 | ||
953 | if (description) { | |
954 | ret = bt_component_class_set_description(component_class, description); | |
955 | if (ret) { | |
956 | BT_LOGE("Cannot set component class's description: " | |
957 | "comp-cls-addr=%p", component_class); | |
958 | goto end; | |
959 | } | |
960 | } | |
961 | ||
962 | if (help) { | |
963 | ret = bt_component_class_set_help(component_class, help); | |
964 | if (ret) { | |
965 | BT_LOGE("Cannot set component class's help text: " | |
966 | "comp-cls-addr=%p", component_class); | |
967 | goto end; | |
968 | } | |
969 | } | |
970 | ||
971 | ret = 0; | |
972 | ||
973 | end: | |
974 | return ret; | |
975 | } | |
976 | ||
977 | static | |
978 | bt_component_class_source *bt_bt2_component_class_source_create( | |
979 | PyObject *py_cls, const char *name, const char *description, | |
980 | const char *help) | |
981 | { | |
982 | bt_component_class_source *component_class_source; | |
983 | bt_component_class *component_class; | |
984 | int ret; | |
985 | ||
986 | BT_ASSERT(py_cls); | |
987 | component_class_source = bt_component_class_source_create(name, | |
988 | component_class_message_iterator_next); | |
989 | if (!component_class_source) { | |
990 | BT_LOGE_STR("Cannot create source component class."); | |
991 | goto end; | |
992 | } | |
993 | ||
994 | component_class = bt_component_class_source_as_component_class(component_class_source); | |
995 | ||
996 | if (component_class_set_help_and_desc(component_class, description, help)) { | |
997 | goto end; | |
998 | } | |
999 | ||
1000 | ret = bt_component_class_source_set_init_method(component_class_source, component_class_source_init); | |
1001 | BT_ASSERT(ret == 0); | |
1002 | ret = bt_component_class_source_set_finalize_method(component_class_source, component_class_source_finalize); | |
1003 | BT_ASSERT(ret == 0); | |
1004 | ret = bt_component_class_source_set_message_iterator_can_seek_beginning_method(component_class_source, | |
1005 | component_class_can_seek_beginning); | |
1006 | BT_ASSERT(ret == 0); | |
1007 | ret = bt_component_class_source_set_message_iterator_seek_beginning_method(component_class_source, | |
1008 | component_class_seek_beginning); | |
1009 | BT_ASSERT(ret == 0); | |
1010 | ret = bt_component_class_source_set_output_port_connected_method(component_class_source, | |
1011 | component_class_source_output_port_connected); | |
1012 | BT_ASSERT(ret == 0); | |
1013 | ret = bt_component_class_source_set_query_method(component_class_source, component_class_source_query); | |
1014 | BT_ASSERT(ret == 0); | |
1015 | ret = bt_component_class_source_set_message_iterator_init_method( | |
1016 | component_class_source, component_class_source_message_iterator_init); | |
1017 | BT_ASSERT(ret == 0); | |
1018 | ret = bt_component_class_source_set_message_iterator_finalize_method( | |
1019 | component_class_source, component_class_message_iterator_finalize); | |
1020 | BT_ASSERT(ret == 0); | |
1021 | register_cc_ptr_to_py_cls(component_class, py_cls); | |
1022 | ||
1023 | end: | |
1024 | return component_class_source; | |
1025 | } | |
1026 | ||
1027 | static | |
1028 | bt_component_class_filter *bt_bt2_component_class_filter_create( | |
1029 | PyObject *py_cls, const char *name, const char *description, | |
1030 | const char *help) | |
1031 | { | |
1032 | bt_component_class *component_class; | |
1033 | bt_component_class_filter *component_class_filter; | |
1034 | int ret; | |
1035 | ||
1036 | BT_ASSERT(py_cls); | |
1037 | component_class_filter = bt_component_class_filter_create(name, | |
1038 | component_class_message_iterator_next); | |
1039 | if (!component_class_filter) { | |
1040 | BT_LOGE_STR("Cannot create filter component class."); | |
1041 | goto end; | |
1042 | } | |
1043 | ||
1044 | component_class = bt_component_class_filter_as_component_class(component_class_filter); | |
1045 | ||
1046 | if (component_class_set_help_and_desc(component_class, description, help)) { | |
1047 | goto end; | |
1048 | } | |
1049 | ||
1050 | ret = bt_component_class_filter_set_init_method(component_class_filter, component_class_filter_init); | |
1051 | BT_ASSERT(ret == 0); | |
1052 | ret = bt_component_class_filter_set_finalize_method (component_class_filter, component_class_filter_finalize); | |
1053 | BT_ASSERT(ret == 0); | |
1054 | ret = bt_component_class_filter_set_message_iterator_can_seek_beginning_method(component_class_filter, | |
1055 | component_class_can_seek_beginning); | |
1056 | BT_ASSERT(ret == 0); | |
1057 | ret = bt_component_class_filter_set_message_iterator_seek_beginning_method(component_class_filter, | |
1058 | component_class_seek_beginning); | |
1059 | BT_ASSERT(ret == 0); | |
1060 | ret = bt_component_class_filter_set_input_port_connected_method(component_class_filter, | |
1061 | component_class_filter_input_port_connected); | |
1062 | BT_ASSERT(ret == 0); | |
1063 | ret = bt_component_class_filter_set_output_port_connected_method(component_class_filter, | |
1064 | component_class_filter_output_port_connected); | |
1065 | BT_ASSERT(ret == 0); | |
1066 | ret = bt_component_class_filter_set_query_method(component_class_filter, component_class_filter_query); | |
1067 | BT_ASSERT(ret == 0); | |
1068 | ret = bt_component_class_filter_set_message_iterator_init_method( | |
1069 | component_class_filter, component_class_filter_message_iterator_init); | |
1070 | BT_ASSERT(ret == 0); | |
1071 | ret = bt_component_class_filter_set_message_iterator_finalize_method( | |
1072 | component_class_filter, component_class_message_iterator_finalize); | |
1073 | BT_ASSERT(ret == 0); | |
1074 | register_cc_ptr_to_py_cls(component_class, py_cls); | |
1075 | ||
1076 | end: | |
1077 | return component_class_filter; | |
1078 | } | |
1079 | ||
1080 | static | |
1081 | bt_component_class_sink *bt_bt2_component_class_sink_create( | |
1082 | PyObject *py_cls, const char *name, const char *description, | |
1083 | const char *help) | |
1084 | { | |
1085 | bt_component_class_sink *component_class_sink; | |
1086 | bt_component_class *component_class; | |
1087 | int ret; | |
1088 | ||
1089 | BT_ASSERT(py_cls); | |
1090 | component_class_sink = bt_component_class_sink_create(name, component_class_sink_consume); | |
1091 | ||
1092 | if (!component_class_sink) { | |
1093 | BT_LOGE_STR("Cannot create sink component class."); | |
1094 | goto end; | |
1095 | } | |
1096 | ||
1097 | component_class = bt_component_class_sink_as_component_class(component_class_sink); | |
1098 | ||
1099 | if (component_class_set_help_and_desc(component_class, description, help)) { | |
1100 | goto end; | |
1101 | } | |
1102 | ||
1103 | ret = bt_component_class_sink_set_init_method(component_class_sink, component_class_sink_init); | |
1104 | BT_ASSERT(ret == 0); | |
1105 | ret = bt_component_class_sink_set_finalize_method(component_class_sink, component_class_sink_finalize); | |
1106 | BT_ASSERT(ret == 0); | |
1107 | ret = bt_component_class_sink_set_input_port_connected_method(component_class_sink, | |
1108 | component_class_sink_input_port_connected); | |
1109 | BT_ASSERT(ret == 0); | |
1110 | ret = bt_component_class_sink_set_graph_is_configured_method(component_class_sink, | |
1111 | component_class_sink_graph_is_configured); | |
1112 | BT_ASSERT(ret == 0); | |
1113 | ret = bt_component_class_sink_set_query_method(component_class_sink, component_class_sink_query); | |
1114 | BT_ASSERT(ret == 0); | |
1115 | register_cc_ptr_to_py_cls(component_class, py_cls); | |
1116 | ||
1117 | end: | |
1118 | return component_class_sink; | |
1119 | } |