1 /**
2 * collectd - src/python.c
3 * Copyright (C) 2009 Sven Trenkel
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Sven Trenkel <collectd at semidefinite.de>
25 **/
27 #include <Python.h>
28 #include <structmember.h>
30 #include <signal.h>
31 #if HAVE_PTHREAD_H
32 # include <pthread.h>
33 #endif
35 #include "collectd.h"
36 #include "common.h"
38 #include "cpython.h"
40 typedef struct cpy_callback_s {
41 char *name;
42 PyObject *callback;
43 PyObject *data;
44 struct cpy_callback_s *next;
45 } cpy_callback_t;
47 static char log_doc[] = "This function sends a string to all logging plugins.";
49 static char flush_doc[] = "flush([plugin][, timeout][, identifier]) -> None\n"
50 "\n"
51 "Flushes the cache of another plugin.";
53 static char unregister_doc[] = "Unregisters a callback. This function needs exactly one parameter either\n"
54 "the function to unregister or the callback identifier to unregister.";
56 static char reg_log_doc[] = "register_log(callback[, data][, name]) -> identifier\n"
57 "\n"
58 "Register a callback function for log messages.\n"
59 "\n"
60 "'callback' is a callable object that will be called every time something\n"
61 " is logged.\n"
62 "'data' is an optional object that will be passed back to the callback\n"
63 " function every time it is called.\n"
64 "'name' is an optional identifier for this callback. The default name\n"
65 " is 'python.<module>'.\n"
66 " Every callback needs a unique identifier, so if you want to\n"
67 " register this callback multiple time from the same module you need\n"
68 " to specify a name here.\n"
69 "'identifier' is the full identifier assigned to this callback.\n"
70 "\n"
71 "The callback function will be called with two or three parameters:\n"
72 "severity: An integer that should be compared to the LOG_ constants.\n"
73 "message: The text to be logged.\n"
74 "data: The optional data parameter passed to the register function.\n"
75 " If the parameter was omitted it will be omitted here, too.";
77 static char reg_init_doc[] = "register_init(callback[, data][, name]) -> identifier\n"
78 "\n"
79 "Register a callback function that will be executed once after the config.\n"
80 "file has been read, all plugins heve been loaded and the collectd has\n"
81 "forked into the background.\n"
82 "\n"
83 "'callback' is a callable object that will be executed.\n"
84 "'data' is an optional object that will be passed back to the callback\n"
85 " function when it is called.\n"
86 "'name' is an optional identifier for this callback. The default name\n"
87 " is 'python.<module>'.\n"
88 " Every callback needs a unique identifier, so if you want to\n"
89 " register this callback multiple time from the same module you need\n"
90 " to specify a name here.\n"
91 "'identifier' is the full identifier assigned to this callback.\n"
92 "\n"
93 "The callback function will be called without parameters, except for\n"
94 "data if it was supplied.";
96 static char reg_config_doc[] = "register_config(callback[, data][, name]) -> identifier\n"
97 "\n"
98 "Register a callback function for config file entries.\n"
99 "'callback' is a callable object that will be called for every config block.\n"
100 "'data' is an optional object that will be passed back to the callback\n"
101 " function every time it is called.\n"
102 "'name' is an optional identifier for this callback. The default name\n"
103 " is 'python.<module>'.\n"
104 " Every callback needs a unique identifier, so if you want to\n"
105 " register this callback multiple time from the same module you need\n"
106 " to specify a name here.\n"
107 "'identifier' is the full identifier assigned to this callback.\n"
108 "\n"
109 "The callback function will be called with one or two parameters:\n"
110 "config: A Config object.\n"
111 "data: The optional data parameter passed to the register function.\n"
112 " If the parameter was omitted it will be omitted here, too.";
114 static char reg_read_doc[] = "register_read(callback[, interval][, data][, name]) -> identifier\n"
115 "\n"
116 "Register a callback function for reading data. It will just be called\n"
117 "in a fixed interval to signal that it's time to dispatch new values.\n"
118 "'callback' is a callable object that will be called every time something\n"
119 " is logged.\n"
120 "'interval' is the number of seconds between between calls to the callback\n"
121 " function. Full float precision is supported here.\n"
122 "'data' is an optional object that will be passed back to the callback\n"
123 " function every time it is called.\n"
124 "'name' is an optional identifier for this callback. The default name\n"
125 " is 'python.<module>'.\n"
126 " Every callback needs a unique identifier, so if you want to\n"
127 " register this callback multiple time from the same module you need\n"
128 " to specify a name here.\n"
129 "'identifier' is the full identifier assigned to this callback.\n"
130 "\n"
131 "The callback function will be called without parameters, except for\n"
132 "data if it was supplied.";
134 static char reg_write_doc[] = "register_write(callback[, data][, name]) -> identifier\n"
135 "\n"
136 "Register a callback function to receive values dispatched by other plugins.\n"
137 "'callback' is a callable object that will be called every time a value\n"
138 " is dispatched.\n"
139 "'data' is an optional object that will be passed back to the callback\n"
140 " function every time it is called.\n"
141 "'name' is an optional identifier for this callback. The default name\n"
142 " is 'python.<module>'.\n"
143 " Every callback needs a unique identifier, so if you want to\n"
144 " register this callback multiple time from the same module you need\n"
145 " to specify a name here.\n"
146 "'identifier' is the full identifier assigned to this callback.\n"
147 "\n"
148 "The callback function will be called with one or two parameters:\n"
149 "values: A Values object which is a copy of the dispatched values.\n"
150 "data: The optional data parameter passed to the register function.\n"
151 " If the parameter was omitted it will be omitted here, too.";
153 static char reg_notification_doc[] = "register_notification(callback[, data][, name]) -> identifier\n"
154 "\n"
155 "Register a callback function for notifications.\n"
156 "'callback' is a callable object that will be called every time a notification\n"
157 " is dispatched.\n"
158 "'data' is an optional object that will be passed back to the callback\n"
159 " function every time it is called.\n"
160 "'name' is an optional identifier for this callback. The default name\n"
161 " is 'python.<module>'.\n"
162 " Every callback needs a unique identifier, so if you want to\n"
163 " register this callback multiple time from the same module you need\n"
164 " to specify a name here.\n"
165 "'identifier' is the full identifier assigned to this callback.\n"
166 "\n"
167 "The callback function will be called with one or two parameters:\n"
168 "notification: A copy of the notification that was dispatched.\n"
169 "data: The optional data parameter passed to the register function.\n"
170 " If the parameter was omitted it will be omitted here, too.";
172 static char reg_flush_doc[] = "register_flush(callback[, data][, name]) -> identifier\n"
173 "\n"
174 "Register a callback function for flush messages.\n"
175 "'callback' is a callable object that will be called every time a plugin\n"
176 " requests a flush for either this or all plugins.\n"
177 "'data' is an optional object that will be passed back to the callback\n"
178 " function every time it is called.\n"
179 "'name' is an optional identifier for this callback. The default name\n"
180 " is 'python.<module>'.\n"
181 " Every callback needs a unique identifier, so if you want to\n"
182 " register this callback multiple time from the same module you need\n"
183 " to specify a name here.\n"
184 "'identifier' is the full identifier assigned to this callback.\n"
185 "\n"
186 "The callback function will be called with two or three parameters:\n"
187 "timeout: Indicates that only data older than 'timeout' seconds is to\n"
188 " be flushed.\n"
189 "id: Specifies which values are to be flushed.\n"
190 "data: The optional data parameter passed to the register function.\n"
191 " If the parameter was omitted it will be omitted here, too.";
193 static char reg_shutdown_doc[] = "register_shutdown(callback[, data][, name]) -> identifier\n"
194 "\n"
195 "Register a callback function for collectd shutdown.\n"
196 "'callback' is a callable object that will be called once collectd is\n"
197 " shutting down.\n"
198 "'data' is an optional object that will be passed back to the callback\n"
199 " function if it is called.\n"
200 "'name' is an optional identifier for this callback. The default name\n"
201 " is 'python.<module>'.\n"
202 " Every callback needs a unique identifier, so if you want to\n"
203 " register this callback multiple time from the same module you need\n"
204 " to specify a name here.\n"
205 "'identifier' is the full identifier assigned to this callback.\n"
206 "\n"
207 "The callback function will be called with no parameters except for\n"
208 " data if it was supplied.";
211 static int do_interactive = 0;
213 /* This is our global thread state. Python saves some stuff in thread-local
214 * storage. So if we allow the interpreter to run in the background
215 * (the scriptwriters might have created some threads from python), we have
216 * to save the state so we can resume it later after shutdown. */
218 static PyThreadState *state;
220 static PyObject *cpy_format_exception;
222 static cpy_callback_t *cpy_config_callbacks;
223 static cpy_callback_t *cpy_init_callbacks;
224 static cpy_callback_t *cpy_shutdown_callbacks;
226 static void cpy_destroy_user_data(void *data) {
227 cpy_callback_t *c = data;
228 free(c->name);
229 Py_DECREF(c->callback);
230 Py_XDECREF(c->data);
231 free(c);
232 }
234 /* You must hold the GIL to call this function!
235 * But if you managed to extract the callback parameter then you probably already do. */
237 static void cpy_build_name(char *buf, size_t size, PyObject *callback, const char *name) {
238 const char *module = NULL;
239 PyObject *mod = NULL;
241 if (name != NULL) {
242 snprintf(buf, size, "python.%s", name);
243 return;
244 }
246 mod = PyObject_GetAttrString(callback, "__module__"); /* New reference. */
247 if (mod != NULL)
248 module = cpy_unicode_or_bytes_to_string(&mod);
250 if (module != NULL) {
251 snprintf(buf, size, "python.%s", module);
252 Py_XDECREF(mod);
253 PyErr_Clear();
254 return;
255 }
256 Py_XDECREF(mod);
258 snprintf(buf, size, "python.%p", callback);
259 PyErr_Clear();
260 }
262 void cpy_log_exception(const char *context) {
263 int l = 0, i;
264 const char *typename = NULL, *message = NULL;
265 PyObject *type, *value, *traceback, *tn, *m, *list;
267 PyErr_Fetch(&type, &value, &traceback);
268 PyErr_NormalizeException(&type, &value, &traceback);
269 if (type == NULL) return;
270 tn = PyObject_GetAttrString(type, "__name__"); /* New reference. */
271 m = PyObject_Str(value); /* New reference. */
272 if (tn != NULL)
273 typename = cpy_unicode_or_bytes_to_string(&tn);
274 if (m != NULL)
275 message = cpy_unicode_or_bytes_to_string(&m);
276 if (typename == NULL)
277 typename = "NamelessException";
278 if (message == NULL)
279 message = "N/A";
280 Py_BEGIN_ALLOW_THREADS
281 ERROR("Unhandled python exception in %s: %s: %s", context, typename, message);
282 Py_END_ALLOW_THREADS
283 Py_XDECREF(tn);
284 Py_XDECREF(m);
285 if (!cpy_format_exception) {
286 PyErr_Clear();
287 Py_XDECREF(type);
288 Py_XDECREF(value);
289 Py_XDECREF(traceback);
290 return;
291 }
292 if (!traceback) {
293 PyErr_Clear();
294 return;
295 }
296 list = PyObject_CallFunction(cpy_format_exception, "NNN", type, value, traceback); /* New reference. */
297 if (list)
298 l = PyObject_Length(list);
299 for (i = 0; i < l; ++i) {
300 char *s;
301 PyObject *line;
303 line = PyList_GET_ITEM(list, i); /* Borrowed reference. */
304 Py_INCREF(line);
305 s = strdup(cpy_unicode_or_bytes_to_string(&line));
306 Py_DECREF(line);
307 if (s[strlen(s) - 1] == '\n')
308 s[strlen(s) - 1] = 0;
309 Py_BEGIN_ALLOW_THREADS
310 ERROR("%s", s);
311 Py_END_ALLOW_THREADS
312 free(s);
313 }
314 Py_XDECREF(list);
315 PyErr_Clear();
316 }
318 static int cpy_read_callback(user_data_t *data) {
319 cpy_callback_t *c = data->data;
320 PyObject *ret;
322 CPY_LOCK_THREADS
323 ret = PyObject_CallFunctionObjArgs(c->callback, c->data, (void *) 0); /* New reference. */
324 if (ret == NULL) {
325 cpy_log_exception("read callback");
326 } else {
327 Py_DECREF(ret);
328 }
329 CPY_RELEASE_THREADS
330 if (ret == NULL)
331 return 1;
332 return 0;
333 }
335 static int cpy_write_callback(const data_set_t *ds, const value_list_t *value_list, user_data_t *data) {
336 int i;
337 cpy_callback_t *c = data->data;
338 PyObject *ret, *list, *temp, *dict = NULL, *val;
339 Values *v;
341 CPY_LOCK_THREADS
342 list = PyList_New(value_list->values_len); /* New reference. */
343 if (list == NULL) {
344 cpy_log_exception("write callback");
345 CPY_RETURN_FROM_THREADS 0;
346 }
347 for (i = 0; i < value_list->values_len; ++i) {
348 if (ds->ds->type == DS_TYPE_COUNTER) {
349 if ((long) value_list->values[i].counter == value_list->values[i].counter)
350 PyList_SetItem(list, i, PyInt_FromLong(value_list->values[i].counter));
351 else
352 PyList_SetItem(list, i, PyLong_FromUnsignedLongLong(value_list->values[i].counter));
353 } else if (ds->ds->type == DS_TYPE_GAUGE) {
354 PyList_SetItem(list, i, PyFloat_FromDouble(value_list->values[i].gauge));
355 } else if (ds->ds->type == DS_TYPE_DERIVE) {
356 if ((long) value_list->values[i].derive == value_list->values[i].derive)
357 PyList_SetItem(list, i, PyInt_FromLong(value_list->values[i].derive));
358 else
359 PyList_SetItem(list, i, PyLong_FromLongLong(value_list->values[i].derive));
360 } else if (ds->ds->type == DS_TYPE_ABSOLUTE) {
361 if ((long) value_list->values[i].absolute == value_list->values[i].absolute)
362 PyList_SetItem(list, i, PyInt_FromLong(value_list->values[i].absolute));
363 else
364 PyList_SetItem(list, i, PyLong_FromUnsignedLongLong(value_list->values[i].absolute));
365 } else {
366 Py_BEGIN_ALLOW_THREADS
367 ERROR("cpy_write_callback: Unknown value type %d.", ds->ds->type);
368 Py_END_ALLOW_THREADS
369 Py_DECREF(list);
370 CPY_RETURN_FROM_THREADS 0;
371 }
372 if (PyErr_Occurred() != NULL) {
373 cpy_log_exception("value building for write callback");
374 Py_DECREF(list);
375 CPY_RETURN_FROM_THREADS 0;
376 }
377 }
378 dict = PyDict_New();
379 if (value_list->meta) {
380 int i, num;
381 char **table;
382 meta_data_t *meta = value_list->meta;
384 num = meta_data_toc(meta, &table);
385 for (i = 0; i < num; ++i) {
386 int type;
387 char *string;
388 int64_t si;
389 uint64_t ui;
390 double d;
391 _Bool b;
393 type = meta_data_type(meta, table[i]);
394 if (type == MD_TYPE_STRING) {
395 if (meta_data_get_string(meta, table[i], &string))
396 continue;
397 temp = cpy_string_to_unicode_or_bytes(string);
398 free(string);
399 PyDict_SetItemString(dict, table[i], temp);
400 Py_XDECREF(temp);
401 } else if (type == MD_TYPE_SIGNED_INT) {
402 if (meta_data_get_signed_int(meta, table[i], &si))
403 continue;
404 temp = PyObject_CallFunctionObjArgs((void *) &SignedType, PyLong_FromLongLong(si), (void *) 0);
405 PyDict_SetItemString(dict, table[i], temp);
406 Py_XDECREF(temp);
407 } else if (type == MD_TYPE_UNSIGNED_INT) {
408 if (meta_data_get_unsigned_int(meta, table[i], &ui))
409 continue;
410 temp = PyObject_CallFunctionObjArgs((void *) &UnsignedType, PyLong_FromUnsignedLongLong(ui), (void *) 0);
411 PyDict_SetItemString(dict, table[i], temp);
412 Py_XDECREF(temp);
413 } else if (type == MD_TYPE_DOUBLE) {
414 if (meta_data_get_double(meta, table[i], &d))
415 continue;
416 temp = PyFloat_FromDouble(d);
417 PyDict_SetItemString(dict, table[i], temp);
418 Py_XDECREF(temp);
419 } else if (type == MD_TYPE_BOOLEAN) {
420 if (meta_data_get_boolean(meta, table[i], &b))
421 continue;
422 if (b)
423 PyDict_SetItemString(dict, table[i], Py_True);
424 else
425 PyDict_SetItemString(dict, table[i], Py_False);
426 }
427 free(table[i]);
428 }
429 free(table);
430 }
431 val = Values_New(); /* New reference. */
432 v = (Values *) val;
433 sstrncpy(v->data.host, value_list->host, sizeof(v->data.host));
434 sstrncpy(v->data.type, value_list->type, sizeof(v->data.type));
435 sstrncpy(v->data.type_instance, value_list->type_instance, sizeof(v->data.type_instance));
436 sstrncpy(v->data.plugin, value_list->plugin, sizeof(v->data.plugin));
437 sstrncpy(v->data.plugin_instance, value_list->plugin_instance, sizeof(v->data.plugin_instance));
438 v->data.time = CDTIME_T_TO_DOUBLE(value_list->time);
439 v->interval = CDTIME_T_TO_DOUBLE(value_list->interval);
440 Py_CLEAR(v->values);
441 v->values = list;
442 Py_CLEAR(v->meta);
443 v->meta = dict;
444 ret = PyObject_CallFunctionObjArgs(c->callback, v, c->data, (void *) 0); /* New reference. */
445 Py_XDECREF(val);
446 if (ret == NULL) {
447 cpy_log_exception("write callback");
448 } else {
449 Py_DECREF(ret);
450 }
451 CPY_RELEASE_THREADS
452 return 0;
453 }
455 static int cpy_notification_callback(const notification_t *notification, user_data_t *data) {
456 cpy_callback_t *c = data->data;
457 PyObject *ret, *notify;
458 Notification *n;
460 CPY_LOCK_THREADS
461 notify = Notification_New(); /* New reference. */
462 n = (Notification *) notify;
463 sstrncpy(n->data.host, notification->host, sizeof(n->data.host));
464 sstrncpy(n->data.type, notification->type, sizeof(n->data.type));
465 sstrncpy(n->data.type_instance, notification->type_instance, sizeof(n->data.type_instance));
466 sstrncpy(n->data.plugin, notification->plugin, sizeof(n->data.plugin));
467 sstrncpy(n->data.plugin_instance, notification->plugin_instance, sizeof(n->data.plugin_instance));
468 n->data.time = CDTIME_T_TO_DOUBLE(notification->time);
469 sstrncpy(n->message, notification->message, sizeof(n->message));
470 n->severity = notification->severity;
471 ret = PyObject_CallFunctionObjArgs(c->callback, n, c->data, (void *) 0); /* New reference. */
472 Py_XDECREF(notify);
473 if (ret == NULL) {
474 cpy_log_exception("notification callback");
475 } else {
476 Py_DECREF(ret);
477 }
478 CPY_RELEASE_THREADS
479 return 0;
480 }
482 static void cpy_log_callback(int severity, const char *message, user_data_t *data) {
483 cpy_callback_t * c = data->data;
484 PyObject *ret, *text;
486 CPY_LOCK_THREADS
487 text = cpy_string_to_unicode_or_bytes(message);
488 if (c->data == NULL)
489 ret = PyObject_CallFunction(c->callback, "iN", severity, text); /* New reference. */
490 else
491 ret = PyObject_CallFunction(c->callback, "iNO", severity, text, c->data); /* New reference. */
493 if (ret == NULL) {
494 /* FIXME */
495 /* Do we really want to trigger a log callback because a log callback failed?
496 * Probably not. */
497 PyErr_Print();
498 /* In case someone wanted to be clever, replaced stderr and failed at that. */
499 PyErr_Clear();
500 } else {
501 Py_DECREF(ret);
502 }
503 CPY_RELEASE_THREADS
504 }
506 static void cpy_flush_callback(int timeout, const char *id, user_data_t *data) {
507 cpy_callback_t * c = data->data;
508 PyObject *ret, *text;
510 CPY_LOCK_THREADS
511 text = cpy_string_to_unicode_or_bytes(id);
512 if (c->data == NULL)
513 ret = PyObject_CallFunction(c->callback, "iN", timeout, text); /* New reference. */
514 else
515 ret = PyObject_CallFunction(c->callback, "iNO", timeout, text, c->data); /* New reference. */
517 if (ret == NULL) {
518 cpy_log_exception("flush callback");
519 } else {
520 Py_DECREF(ret);
521 }
522 CPY_RELEASE_THREADS
523 }
525 static PyObject *cpy_register_generic(cpy_callback_t **list_head, PyObject *args, PyObject *kwds) {
526 char buf[512];
527 cpy_callback_t *c;
528 const char *name = NULL;
529 PyObject *callback = NULL, *data = NULL, *mod = NULL;
530 static char *kwlist[] = {"callback", "data", "name", NULL};
532 if (PyArg_ParseTupleAndKeywords(args, kwds, "O|Oet", kwlist, &callback, &data, NULL, &name) == 0) return NULL;
533 if (PyCallable_Check(callback) == 0) {
534 PyErr_SetString(PyExc_TypeError, "callback needs a be a callable object.");
535 return NULL;
536 }
537 cpy_build_name(buf, sizeof(buf), callback, name);
539 Py_INCREF(callback);
540 Py_XINCREF(data);
541 c = malloc(sizeof(*c));
542 c->name = strdup(buf);
543 c->callback = callback;
544 c->data = data;
545 c->next = *list_head;
546 *list_head = c;
547 Py_XDECREF(mod);
548 return cpy_string_to_unicode_or_bytes(buf);
549 }
551 static PyObject *cpy_flush(cpy_callback_t **list_head, PyObject *args, PyObject *kwds) {
552 int timeout = -1;
553 const char *plugin = NULL, *identifier = NULL;
554 static char *kwlist[] = {"plugin", "timeout", "identifier", NULL};
556 if (PyArg_ParseTupleAndKeywords(args, kwds, "|etiet", kwlist, NULL, &plugin, &timeout, NULL, &identifier) == 0) return NULL;
557 Py_BEGIN_ALLOW_THREADS
558 plugin_flush(plugin, timeout, identifier);
559 Py_END_ALLOW_THREADS
560 Py_RETURN_NONE;
561 }
563 static PyObject *cpy_register_config(PyObject *self, PyObject *args, PyObject *kwds) {
564 return cpy_register_generic(&cpy_config_callbacks, args, kwds);
565 }
567 static PyObject *cpy_register_init(PyObject *self, PyObject *args, PyObject *kwds) {
568 return cpy_register_generic(&cpy_init_callbacks, args, kwds);
569 }
571 typedef int reg_function_t(const char *name, void *callback, void *data);
573 static PyObject *cpy_register_generic_userdata(void *reg, void *handler, PyObject *args, PyObject *kwds) {
574 char buf[512];
575 reg_function_t *register_function = (reg_function_t *) reg;
576 cpy_callback_t *c = NULL;
577 user_data_t *user_data = NULL;
578 const char *name = NULL;
579 PyObject *callback = NULL, *data = NULL;
580 static char *kwlist[] = {"callback", "data", "name", NULL};
582 if (PyArg_ParseTupleAndKeywords(args, kwds, "O|Oet", kwlist, &callback, &data, NULL, &name) == 0) return NULL;
583 if (PyCallable_Check(callback) == 0) {
584 PyErr_SetString(PyExc_TypeError, "callback needs a be a callable object.");
585 return NULL;
586 }
587 cpy_build_name(buf, sizeof(buf), callback, name);
589 Py_INCREF(callback);
590 Py_XINCREF(data);
591 c = malloc(sizeof(*c));
592 c->name = strdup(buf);
593 c->callback = callback;
594 c->data = data;
595 c->next = NULL;
596 user_data = malloc(sizeof(*user_data));
597 user_data->free_func = cpy_destroy_user_data;
598 user_data->data = c;
599 register_function(buf, handler, user_data);
600 return cpy_string_to_unicode_or_bytes(buf);
601 }
603 static PyObject *cpy_register_read(PyObject *self, PyObject *args, PyObject *kwds) {
604 char buf[512];
605 cpy_callback_t *c = NULL;
606 user_data_t *user_data = NULL;
607 double interval = 0;
608 const char *name = NULL;
609 PyObject *callback = NULL, *data = NULL;
610 struct timespec ts;
611 static char *kwlist[] = {"callback", "interval", "data", "name", NULL};
613 if (PyArg_ParseTupleAndKeywords(args, kwds, "O|dOet", kwlist, &callback, &interval, &data, NULL, &name) == 0) return NULL;
614 if (PyCallable_Check(callback) == 0) {
615 PyErr_SetString(PyExc_TypeError, "callback needs a be a callable object.");
616 return NULL;
617 }
618 cpy_build_name(buf, sizeof(buf), callback, name);
620 Py_INCREF(callback);
621 Py_XINCREF(data);
622 c = malloc(sizeof(*c));
623 c->name = strdup(buf);
624 c->callback = callback;
625 c->data = data;
626 c->next = NULL;
627 user_data = malloc(sizeof(*user_data));
628 user_data->free_func = cpy_destroy_user_data;
629 user_data->data = c;
630 ts.tv_sec = interval;
631 ts.tv_nsec = (interval - ts.tv_sec) * 1000000000;
632 plugin_register_complex_read(/* group = */ NULL, buf,
633 cpy_read_callback, &ts, user_data);
634 return cpy_string_to_unicode_or_bytes(buf);
635 }
637 static PyObject *cpy_register_log(PyObject *self, PyObject *args, PyObject *kwds) {
638 return cpy_register_generic_userdata((void *) plugin_register_log,
639 (void *) cpy_log_callback, args, kwds);
640 }
642 static PyObject *cpy_register_write(PyObject *self, PyObject *args, PyObject *kwds) {
643 return cpy_register_generic_userdata((void *) plugin_register_write,
644 (void *) cpy_write_callback, args, kwds);
645 }
647 static PyObject *cpy_register_notification(PyObject *self, PyObject *args, PyObject *kwds) {
648 return cpy_register_generic_userdata((void *) plugin_register_notification,
649 (void *) cpy_notification_callback, args, kwds);
650 }
652 static PyObject *cpy_register_flush(PyObject *self, PyObject *args, PyObject *kwds) {
653 return cpy_register_generic_userdata((void *) plugin_register_flush,
654 (void *) cpy_flush_callback, args, kwds);
655 }
657 static PyObject *cpy_register_shutdown(PyObject *self, PyObject *args, PyObject *kwds) {
658 return cpy_register_generic(&cpy_shutdown_callbacks, args, kwds);
659 }
661 static PyObject *cpy_error(PyObject *self, PyObject *args) {
662 const char *text;
663 if (PyArg_ParseTuple(args, "et", NULL, &text) == 0) return NULL;
664 Py_BEGIN_ALLOW_THREADS
665 plugin_log(LOG_ERR, "%s", text);
666 Py_END_ALLOW_THREADS
667 Py_RETURN_NONE;
668 }
670 static PyObject *cpy_warning(PyObject *self, PyObject *args) {
671 const char *text;
672 if (PyArg_ParseTuple(args, "et", NULL, &text) == 0) return NULL;
673 Py_BEGIN_ALLOW_THREADS
674 plugin_log(LOG_WARNING, "%s", text);
675 Py_END_ALLOW_THREADS
676 Py_RETURN_NONE;
677 }
679 static PyObject *cpy_notice(PyObject *self, PyObject *args) {
680 const char *text;
681 if (PyArg_ParseTuple(args, "et", NULL, &text) == 0) return NULL;
682 Py_BEGIN_ALLOW_THREADS
683 plugin_log(LOG_NOTICE, "%s", text);
684 Py_END_ALLOW_THREADS
685 Py_RETURN_NONE;
686 }
688 static PyObject *cpy_info(PyObject *self, PyObject *args) {
689 const char *text;
690 if (PyArg_ParseTuple(args, "et", NULL, &text) == 0) return NULL;
691 Py_BEGIN_ALLOW_THREADS
692 plugin_log(LOG_INFO, "%s", text);
693 Py_END_ALLOW_THREADS
694 Py_RETURN_NONE;
695 }
697 static PyObject *cpy_debug(PyObject *self, PyObject *args) {
698 #ifdef COLLECT_DEBUG
699 const char *text;
700 if (PyArg_ParseTuple(args, "et", NULL, &text) == 0) return NULL;
701 Py_BEGIN_ALLOW_THREADS
702 plugin_log(LOG_DEBUG, "%s", text);
703 Py_END_ALLOW_THREADS
704 #endif
705 Py_RETURN_NONE;
706 }
708 static PyObject *cpy_unregister_generic(cpy_callback_t **list_head, PyObject *arg, const char *desc) {
709 char buf[512];
710 const char *name;
711 cpy_callback_t *prev = NULL, *tmp;
713 Py_INCREF(arg);
714 name = cpy_unicode_or_bytes_to_string(&arg);
715 if (name == NULL) {
716 PyErr_Clear();
717 if (!PyCallable_Check(arg)) {
718 PyErr_SetString(PyExc_TypeError, "This function needs a string or a callable object as its only parameter.");
719 Py_DECREF(arg);
720 return NULL;
721 }
722 cpy_build_name(buf, sizeof(buf), arg, NULL);
723 name = buf;
724 }
725 for (tmp = *list_head; tmp; prev = tmp, tmp = tmp->next)
726 if (strcmp(name, tmp->name) == 0)
727 break;
729 Py_DECREF(arg);
730 if (tmp == NULL) {
731 PyErr_Format(PyExc_RuntimeError, "Unable to unregister %s callback '%s'.", desc, name);
732 return NULL;
733 }
734 /* Yes, this is actually save. To call this function the caller has to
735 * hold the GIL. Well, save as long as there is only one GIL anyway ... */
736 if (prev == NULL)
737 *list_head = tmp->next;
738 else
739 prev->next = tmp->next;
740 cpy_destroy_user_data(tmp);
741 Py_RETURN_NONE;
742 }
744 typedef int cpy_unregister_function_t(const char *name);
746 static PyObject *cpy_unregister_generic_userdata(cpy_unregister_function_t *unreg, PyObject *arg, const char *desc) {
747 char buf[512];
748 const char *name;
750 Py_INCREF(arg);
751 name = cpy_unicode_or_bytes_to_string(&arg);
752 if (name == NULL) {
753 PyErr_Clear();
754 if (!PyCallable_Check(arg)) {
755 PyErr_SetString(PyExc_TypeError, "This function needs a string or a callable object as its only parameter.");
756 Py_DECREF(arg);
757 return NULL;
758 }
759 cpy_build_name(buf, sizeof(buf), arg, NULL);
760 name = buf;
761 }
762 if (unreg(name) == 0) {
763 Py_DECREF(arg);
764 Py_RETURN_NONE;
765 }
766 PyErr_Format(PyExc_RuntimeError, "Unable to unregister %s callback '%s'.", desc, name);
767 Py_DECREF(arg);
768 return NULL;
769 }
771 static PyObject *cpy_unregister_log(PyObject *self, PyObject *arg) {
772 return cpy_unregister_generic_userdata(plugin_unregister_log, arg, "log");
773 }
775 static PyObject *cpy_unregister_init(PyObject *self, PyObject *arg) {
776 return cpy_unregister_generic(&cpy_init_callbacks, arg, "init");
777 }
779 static PyObject *cpy_unregister_config(PyObject *self, PyObject *arg) {
780 return cpy_unregister_generic(&cpy_config_callbacks, arg, "config");
781 }
783 static PyObject *cpy_unregister_read(PyObject *self, PyObject *arg) {
784 return cpy_unregister_generic_userdata(plugin_unregister_read, arg, "read");
785 }
787 static PyObject *cpy_unregister_write(PyObject *self, PyObject *arg) {
788 return cpy_unregister_generic_userdata(plugin_unregister_write, arg, "write");
789 }
791 static PyObject *cpy_unregister_notification(PyObject *self, PyObject *arg) {
792 return cpy_unregister_generic_userdata(plugin_unregister_notification, arg, "notification");
793 }
795 static PyObject *cpy_unregister_flush(PyObject *self, PyObject *arg) {
796 return cpy_unregister_generic_userdata(plugin_unregister_flush, arg, "flush");
797 }
799 static PyObject *cpy_unregister_shutdown(PyObject *self, PyObject *arg) {
800 return cpy_unregister_generic(&cpy_shutdown_callbacks, arg, "shutdown");
801 }
803 static PyMethodDef cpy_methods[] = {
804 {"debug", cpy_debug, METH_VARARGS, log_doc},
805 {"info", cpy_info, METH_VARARGS, log_doc},
806 {"notice", cpy_notice, METH_VARARGS, log_doc},
807 {"warning", cpy_warning, METH_VARARGS, log_doc},
808 {"error", cpy_error, METH_VARARGS, log_doc},
809 {"flush", (PyCFunction) cpy_flush, METH_VARARGS | METH_KEYWORDS, flush_doc},
810 {"register_log", (PyCFunction) cpy_register_log, METH_VARARGS | METH_KEYWORDS, reg_log_doc},
811 {"register_init", (PyCFunction) cpy_register_init, METH_VARARGS | METH_KEYWORDS, reg_init_doc},
812 {"register_config", (PyCFunction) cpy_register_config, METH_VARARGS | METH_KEYWORDS, reg_config_doc},
813 {"register_read", (PyCFunction) cpy_register_read, METH_VARARGS | METH_KEYWORDS, reg_read_doc},
814 {"register_write", (PyCFunction) cpy_register_write, METH_VARARGS | METH_KEYWORDS, reg_write_doc},
815 {"register_notification", (PyCFunction) cpy_register_notification, METH_VARARGS | METH_KEYWORDS, reg_notification_doc},
816 {"register_flush", (PyCFunction) cpy_register_flush, METH_VARARGS | METH_KEYWORDS, reg_flush_doc},
817 {"register_shutdown", (PyCFunction) cpy_register_shutdown, METH_VARARGS | METH_KEYWORDS, reg_shutdown_doc},
818 {"unregister_log", cpy_unregister_log, METH_O, unregister_doc},
819 {"unregister_init", cpy_unregister_init, METH_O, unregister_doc},
820 {"unregister_config", cpy_unregister_config, METH_O, unregister_doc},
821 {"unregister_read", cpy_unregister_read, METH_O, unregister_doc},
822 {"unregister_write", cpy_unregister_write, METH_O, unregister_doc},
823 {"unregister_notification", cpy_unregister_notification, METH_O, unregister_doc},
824 {"unregister_flush", cpy_unregister_flush, METH_O, unregister_doc},
825 {"unregister_shutdown", cpy_unregister_shutdown, METH_O, unregister_doc},
826 {0, 0, 0, 0}
827 };
829 static int cpy_shutdown(void) {
830 cpy_callback_t *c;
831 PyObject *ret;
833 /* This can happen if the module was loaded but not configured. */
834 if (state != NULL)
835 PyEval_RestoreThread(state);
837 for (c = cpy_shutdown_callbacks; c; c = c->next) {
838 ret = PyObject_CallFunctionObjArgs(c->callback, c->data, (void *) 0); /* New reference. */
839 if (ret == NULL)
840 cpy_log_exception("shutdown callback");
841 else
842 Py_DECREF(ret);
843 }
844 PyErr_Print();
845 Py_Finalize();
846 return 0;
847 }
849 static void cpy_int_handler(int sig) {
850 return;
851 }
853 static void *cpy_interactive(void *data) {
854 sigset_t sigset;
855 struct sigaction sig_int_action, old;
857 /* Signal handler in a plugin? Bad stuff, but the best way to
858 * handle it I guess. In an interactive session people will
859 * press Ctrl+C at some time, which will generate a SIGINT.
860 * This will cause collectd to shutdown, thus killing the
861 * interactive interpreter, and leaving the terminal in a
862 * mess. Chances are, this isn't what the user wanted to do.
863 *
864 * So this is the plan:
865 * 1. Block SIGINT in the main thread.
866 * 2. Install our own signal handler that does nothing.
867 * 3. Unblock SIGINT in the interactive thread.
868 *
869 * This will make sure that SIGINT won't kill collectd but
870 * still interrupt syscalls like sleep and pause.
871 * It does not raise a KeyboardInterrupt exception because so
872 * far nobody managed to figure out how to do that. */
873 memset (&sig_int_action, '\0', sizeof (sig_int_action));
874 sig_int_action.sa_handler = cpy_int_handler;
875 sigaction (SIGINT, &sig_int_action, &old);
877 sigemptyset(&sigset);
878 sigaddset(&sigset, SIGINT);
879 pthread_sigmask(SIG_UNBLOCK, &sigset, NULL);
880 PyEval_AcquireThread(state);
881 if (PyImport_ImportModule("readline") == NULL) {
882 /* This interactive session will suck. */
883 cpy_log_exception("interactive session init");
884 }
885 PyRun_InteractiveLoop(stdin, "<stdin>");
886 PyErr_Print();
887 PyEval_ReleaseThread(state);
888 NOTICE("python: Interactive interpreter exited, stopping collectd ...");
889 /* Restore the original collectd SIGINT handler and raise SIGINT.
890 * The main thread still has SIGINT blocked and there's nothing we
891 * can do about that so this thread will handle it. But that's not
892 * important, except that it won't interrupt the main loop and so
893 * it might take a few seconds before collectd really shuts down. */
894 sigaction (SIGINT, &old, NULL);
895 raise(SIGINT);
896 pause();
897 return NULL;
898 }
900 static int cpy_init(void) {
901 cpy_callback_t *c;
902 PyObject *ret;
903 static pthread_t thread;
904 sigset_t sigset;
906 if (!Py_IsInitialized()) {
907 WARNING("python: Plugin loaded but not configured.");
908 plugin_unregister_shutdown("python");
909 return 0;
910 }
911 PyEval_InitThreads();
912 /* Now it's finally OK to use python threads. */
913 for (c = cpy_init_callbacks; c; c = c->next) {
914 ret = PyObject_CallFunctionObjArgs(c->callback, c->data, (void *) 0); /* New reference. */
915 if (ret == NULL)
916 cpy_log_exception("init callback");
917 else
918 Py_DECREF(ret);
919 }
920 sigemptyset(&sigset);
921 sigaddset(&sigset, SIGINT);
922 pthread_sigmask(SIG_BLOCK, &sigset, NULL);
923 state = PyEval_SaveThread();
924 if (do_interactive) {
925 if (pthread_create(&thread, NULL, cpy_interactive, NULL)) {
926 ERROR("python: Error creating thread for interactive interpreter.");
927 }
928 }
930 return 0;
931 }
933 static PyObject *cpy_oconfig_to_pyconfig(oconfig_item_t *ci, PyObject *parent) {
934 int i;
935 PyObject *item, *values, *children, *tmp;
937 if (parent == NULL)
938 parent = Py_None;
940 values = PyTuple_New(ci->values_num); /* New reference. */
941 for (i = 0; i < ci->values_num; ++i) {
942 if (ci->values[i].type == OCONFIG_TYPE_STRING) {
943 PyTuple_SET_ITEM(values, i, cpy_string_to_unicode_or_bytes(ci->values[i].value.string));
944 } else if (ci->values[i].type == OCONFIG_TYPE_NUMBER) {
945 PyTuple_SET_ITEM(values, i, PyFloat_FromDouble(ci->values[i].value.number));
946 } else if (ci->values[i].type == OCONFIG_TYPE_BOOLEAN) {
947 PyTuple_SET_ITEM(values, i, PyBool_FromLong(ci->values[i].value.boolean));
948 }
949 }
951 tmp = cpy_string_to_unicode_or_bytes(ci->key);
952 item = PyObject_CallFunction((void *) &ConfigType, "NONO", tmp, parent, values, Py_None);
953 if (item == NULL)
954 return NULL;
955 children = PyTuple_New(ci->children_num); /* New reference. */
956 for (i = 0; i < ci->children_num; ++i) {
957 PyTuple_SET_ITEM(children, i, cpy_oconfig_to_pyconfig(ci->children + i, item));
958 }
959 tmp = ((Config *) item)->children;
960 ((Config *) item)->children = children;
961 Py_XDECREF(tmp);
962 return item;
963 }
965 #ifdef IS_PY3K
966 static struct PyModuleDef collectdmodule = {
967 PyModuleDef_HEAD_INIT,
968 "collectd", /* name of module */
969 "The python interface to collectd", /* module documentation, may be NULL */
970 -1,
971 cpy_methods
972 };
974 PyMODINIT_FUNC PyInit_collectd(void) {
975 return PyModule_Create(&collectdmodule);
976 }
977 #endif
979 static int cpy_config(oconfig_item_t *ci) {
980 int i;
981 char *argv = "";
982 PyObject *sys, *tb;
983 PyObject *sys_path;
984 PyObject *module;
986 /* Ok in theory we shouldn't do initialization at this point
987 * but we have to. In order to give python scripts a chance
988 * to register a config callback we need to be able to execute
989 * python code during the config callback so we have to start
990 * the interpreter here. */
991 /* Do *not* use the python "thread" module at this point! */
993 #ifdef IS_PY3K
994 /* Add a builtin module, before Py_Initialize */
995 PyImport_AppendInittab("collectd", PyInit_collectd);
996 #endif
998 Py_Initialize();
1000 PyType_Ready(&ConfigType);
1001 PyType_Ready(&PluginDataType);
1002 ValuesType.tp_base = &PluginDataType;
1003 PyType_Ready(&ValuesType);
1004 NotificationType.tp_base = &PluginDataType;
1005 PyType_Ready(&NotificationType);
1006 SignedType.tp_base = &PyLong_Type;
1007 PyType_Ready(&SignedType);
1008 UnsignedType.tp_base = &PyLong_Type;
1009 PyType_Ready(&UnsignedType);
1010 sys = PyImport_ImportModule("sys"); /* New reference. */
1011 if (sys == NULL) {
1012 cpy_log_exception("python initialization");
1013 return 1;
1014 }
1015 sys_path = PyObject_GetAttrString(sys, "path"); /* New reference. */
1016 Py_DECREF(sys);
1017 if (sys_path == NULL) {
1018 cpy_log_exception("python initialization");
1019 return 1;
1020 }
1021 PySys_SetArgv(1, &argv);
1022 PyList_SetSlice(sys_path, 0, 1, NULL);
1024 #ifdef IS_PY3K
1025 module = PyImport_ImportModule("collectd");
1026 #else
1027 module = Py_InitModule("collectd", cpy_methods); /* Borrowed reference. */
1028 #endif
1029 PyModule_AddObject(module, "Config", (void *) &ConfigType); /* Steals a reference. */
1030 PyModule_AddObject(module, "Values", (void *) &ValuesType); /* Steals a reference. */
1031 PyModule_AddObject(module, "Notification", (void *) &NotificationType); /* Steals a reference. */
1032 PyModule_AddObject(module, "Signed", (void *) &SignedType); /* Steals a reference. */
1033 PyModule_AddObject(module, "Unsigned", (void *) &UnsignedType); /* Steals a reference. */
1034 PyModule_AddIntConstant(module, "LOG_DEBUG", LOG_DEBUG);
1035 PyModule_AddIntConstant(module, "LOG_INFO", LOG_INFO);
1036 PyModule_AddIntConstant(module, "LOG_NOTICE", LOG_NOTICE);
1037 PyModule_AddIntConstant(module, "LOG_WARNING", LOG_WARNING);
1038 PyModule_AddIntConstant(module, "LOG_ERROR", LOG_ERR);
1039 PyModule_AddIntConstant(module, "NOTIF_FAILURE", NOTIF_FAILURE);
1040 PyModule_AddIntConstant(module, "NOTIF_WARNING", NOTIF_WARNING);
1041 PyModule_AddIntConstant(module, "NOTIF_OKAY", NOTIF_OKAY);
1042 for (i = 0; i < ci->children_num; ++i) {
1043 oconfig_item_t *item = ci->children + i;
1045 if (strcasecmp(item->key, "Interactive") == 0) {
1046 if (item->values_num != 1 || item->values[0].type != OCONFIG_TYPE_BOOLEAN)
1047 continue;
1048 do_interactive = item->values[0].value.boolean;
1049 } else if (strcasecmp(item->key, "Encoding") == 0) {
1050 if (item->values_num != 1 || item->values[0].type != OCONFIG_TYPE_STRING)
1051 continue;
1052 /* Why is this even necessary? And undocumented? */
1053 if (PyUnicode_SetDefaultEncoding(item->values[0].value.string))
1054 cpy_log_exception("setting default encoding");
1055 } else if (strcasecmp(item->key, "LogTraces") == 0) {
1056 if (item->values_num != 1 || item->values[0].type != OCONFIG_TYPE_BOOLEAN)
1057 continue;
1058 if (!item->values[0].value.boolean) {
1059 Py_XDECREF(cpy_format_exception);
1060 cpy_format_exception = NULL;
1061 continue;
1062 }
1063 if (cpy_format_exception)
1064 continue;
1065 tb = PyImport_ImportModule("traceback"); /* New reference. */
1066 if (tb == NULL) {
1067 cpy_log_exception("python initialization");
1068 continue;
1069 }
1070 cpy_format_exception = PyObject_GetAttrString(tb, "format_exception"); /* New reference. */
1071 Py_DECREF(tb);
1072 if (cpy_format_exception == NULL)
1073 cpy_log_exception("python initialization");
1074 } else if (strcasecmp(item->key, "ModulePath") == 0) {
1075 char *dir = NULL;
1076 PyObject *dir_object;
1078 if (cf_util_get_string(item, &dir) != 0)
1079 continue;
1080 dir_object = cpy_string_to_unicode_or_bytes(dir); /* New reference. */
1081 if (dir_object == NULL) {
1082 ERROR("python plugin: Unable to convert \"%s\" to "
1083 "a python object.", dir);
1084 free(dir);
1085 cpy_log_exception("python initialization");
1086 continue;
1087 }
1088 if (PyList_Append(sys_path, dir_object) != 0) {
1089 ERROR("python plugin: Unable to append \"%s\" to "
1090 "python module path.", dir);
1091 cpy_log_exception("python initialization");
1092 }
1093 Py_DECREF(dir_object);
1094 free(dir);
1095 } else if (strcasecmp(item->key, "Import") == 0) {
1096 char *module_name = NULL;
1097 PyObject *module;
1099 if (cf_util_get_string(item, &module_name) != 0)
1100 continue;
1101 module = PyImport_ImportModule(module_name); /* New reference. */
1102 if (module == NULL) {
1103 ERROR("python plugin: Error importing module \"%s\".", module_name);
1104 cpy_log_exception("importing module");
1105 }
1106 free(module_name);
1107 Py_XDECREF(module);
1108 } else if (strcasecmp(item->key, "Module") == 0) {
1109 char *name = NULL;
1110 cpy_callback_t *c;
1111 PyObject *ret;
1113 if (cf_util_get_string(item, &name) != 0)
1114 continue;
1115 for (c = cpy_config_callbacks; c; c = c->next) {
1116 if (strcasecmp(c->name + 7, name) == 0)
1117 break;
1118 }
1119 if (c == NULL) {
1120 WARNING("python plugin: Found a configuration for the \"%s\" plugin, "
1121 "but the plugin isn't loaded or didn't register "
1122 "a configuration callback.", name);
1123 free(name);
1124 continue;
1125 }
1126 free(name);
1127 if (c->data == NULL)
1128 ret = PyObject_CallFunction(c->callback, "N",
1129 cpy_oconfig_to_pyconfig(item, NULL)); /* New reference. */
1130 else
1131 ret = PyObject_CallFunction(c->callback, "NO",
1132 cpy_oconfig_to_pyconfig(item, NULL), c->data); /* New reference. */
1133 if (ret == NULL)
1134 cpy_log_exception("loading module");
1135 else
1136 Py_DECREF(ret);
1137 } else {
1138 WARNING("python plugin: Ignoring unknown config key \"%s\".", item->key);
1139 }
1140 }
1141 Py_DECREF(sys_path);
1142 return 0;
1143 }
1145 void module_register(void) {
1146 plugin_register_complex_config("python", cpy_config);
1147 plugin_register_init("python", cpy_init);
1148 plugin_register_shutdown("python", cpy_shutdown);
1149 }