2 * collectd - src/perl.c
3 * Copyright (C) 2007, 2008 Sebastian Harl
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Sebastian Harl <sh at tokkee.org>
23 * This plugin embeds a Perl interpreter into collectd and provides an
24 * interface for collectd plugins written in perl.
27 /* do not automatically get the thread specific perl interpreter */
28 #define PERL_NO_GET_CONTEXT
30 #define DONT_POISON_SPRINTF_YET 1
32 #undef DONT_POISON_SPRINTF_YET
34 #include "configfile.h"
39 #if defined(COLLECT_DEBUG) && COLLECT_DEBUG && defined(__GNUC__) && __GNUC__
40 # pragma GCC poison sprintf
45 /* Some versions of Perl define their own version of DEBUG... :-/ */
50 /* ... while we want the definition found in plugin.h. */
56 #if !defined(USE_ITHREADS)
57 # error "Perl does not support ithreads!"
58 #endif /* !defined(USE_ITHREADS) */
60 /* clear the Perl sub's stack frame
61 * (this should only be used inside an XSUB) */
62 #define CLEAR_STACK_FRAME PL_stack_sp = PL_stack_base + *PL_markstack_ptr
66 #define PLUGIN_WRITE 2
67 #define PLUGIN_SHUTDOWN 3
69 #define PLUGIN_NOTIF 5
70 #define PLUGIN_FLUSH 6
72 #define PLUGIN_TYPES 7
74 #define PLUGIN_CONFIG 254
75 #define PLUGIN_DATASET 255
77 #define log_debug(...) DEBUG ("perl: " __VA_ARGS__)
78 #define log_info(...) INFO ("perl: " __VA_ARGS__)
79 #define log_warn(...) WARNING ("perl: " __VA_ARGS__)
80 #define log_err(...) ERROR ("perl: " __VA_ARGS__)
82 /* this is defined in DynaLoader.a */
83 void boot_DynaLoader (PerlInterpreter *, CV *);
85 static XS (Collectd_plugin_register_ds);
86 static XS (Collectd_plugin_unregister_ds);
87 static XS (Collectd_plugin_dispatch_values);
88 static XS (Collectd__plugin_write);
89 static XS (Collectd__plugin_flush);
90 static XS (Collectd_plugin_dispatch_notification);
91 static XS (Collectd_plugin_log);
92 static XS (Collectd_call_by_name);
98 typedef struct c_ithread_s {
99 /* the thread's Perl interpreter */
100 PerlInterpreter *interp;
102 /* double linked list of threads */
103 struct c_ithread_s *prev;
104 struct c_ithread_s *next;
112 /* some usage stats */
113 int number_of_threads;
114 #endif /* COLLECT_DEBUG */
116 pthread_mutex_t mutex;
123 /* if perl_threads != NULL perl_threads->head must
124 * point to the "base" thread */
125 static c_ithread_list_t *perl_threads = NULL;
127 /* the key used to store each pthread's ithread */
128 static pthread_key_t perl_thr_key;
130 static int perl_argc = 0;
131 static char **perl_argv = NULL;
133 static char base_name[DATA_MAX_NAME_LEN] = "";
140 { "Collectd::plugin_register_data_set", Collectd_plugin_register_ds },
141 { "Collectd::plugin_unregister_data_set", Collectd_plugin_unregister_ds },
142 { "Collectd::plugin_dispatch_values", Collectd_plugin_dispatch_values },
143 { "Collectd::_plugin_write", Collectd__plugin_write },
144 { "Collectd::_plugin_flush", Collectd__plugin_flush },
145 { "Collectd::plugin_dispatch_notification",
146 Collectd_plugin_dispatch_notification },
147 { "Collectd::plugin_log", Collectd_plugin_log },
148 { "Collectd::call_by_name", Collectd_call_by_name },
157 { "Collectd::TYPE_INIT", PLUGIN_INIT },
158 { "Collectd::TYPE_READ", PLUGIN_READ },
159 { "Collectd::TYPE_WRITE", PLUGIN_WRITE },
160 { "Collectd::TYPE_SHUTDOWN", PLUGIN_SHUTDOWN },
161 { "Collectd::TYPE_LOG", PLUGIN_LOG },
162 { "Collectd::TYPE_NOTIF", PLUGIN_NOTIF },
163 { "Collectd::TYPE_FLUSH", PLUGIN_FLUSH },
164 { "Collectd::TYPE_CONFIG", PLUGIN_CONFIG },
165 { "Collectd::TYPE_DATASET", PLUGIN_DATASET },
166 { "Collectd::DS_TYPE_COUNTER", DS_TYPE_COUNTER },
167 { "Collectd::DS_TYPE_GAUGE", DS_TYPE_GAUGE },
168 { "Collectd::LOG_ERR", LOG_ERR },
169 { "Collectd::LOG_WARNING", LOG_WARNING },
170 { "Collectd::LOG_NOTICE", LOG_NOTICE },
171 { "Collectd::LOG_INFO", LOG_INFO },
172 { "Collectd::LOG_DEBUG", LOG_DEBUG },
173 { "Collectd::NOTIF_FAILURE", NOTIF_FAILURE },
174 { "Collectd::NOTIF_WARNING", NOTIF_WARNING },
175 { "Collectd::NOTIF_OKAY", NOTIF_OKAY },
184 { "Collectd::hostname_g", hostname_g },
193 { "Collectd::interval_g", &interval_g },
198 * Helper functions for data type conversion.
213 static int hv2data_source (pTHX_ HV *hash, data_source_t *ds)
217 if ((NULL == hash) || (NULL == ds))
220 if (NULL != (tmp = hv_fetch (hash, "name", 4, 0))) {
221 sstrncpy (ds->name, SvPV_nolen (*tmp), sizeof (ds->name));
224 log_err ("hv2data_source: No DS name given.");
228 if (NULL != (tmp = hv_fetch (hash, "type", 4, 0))) {
229 ds->type = SvIV (*tmp);
231 if ((DS_TYPE_COUNTER != ds->type) && (DS_TYPE_GAUGE != ds->type)) {
232 log_err ("hv2data_source: Invalid DS type.");
237 ds->type = DS_TYPE_COUNTER;
240 if (NULL != (tmp = hv_fetch (hash, "min", 3, 0)))
241 ds->min = SvNV (*tmp);
245 if (NULL != (tmp = hv_fetch (hash, "max", 3, 0)))
246 ds->max = SvNV (*tmp);
250 } /* static int hv2data_source (HV *, data_source_t *) */
252 static int av2value (pTHX_ char *name, AV *array, value_t *value, int len)
254 const data_set_t *ds;
258 if ((NULL == name) || (NULL == array) || (NULL == value))
261 if (av_len (array) < len - 1)
262 len = av_len (array) + 1;
267 ds = plugin_get_ds (name);
269 log_err ("av2value: Unknown dataset \"%s\"", name);
273 if (ds->ds_num < len) {
274 log_warn ("av2value: Value length exceeds data set length.");
278 for (i = 0; i < len; ++i) {
279 SV **tmp = av_fetch (array, i, 0);
282 if (DS_TYPE_COUNTER == ds->ds[i].type)
283 value[i].counter = SvIV (*tmp);
285 value[i].gauge = SvNV (*tmp);
292 } /* static int av2value (char *, AV *, value_t *, int) */
297 * values => [ @values ],
301 * plugin_instance => $pinstance,
302 * type_instance => $tinstance,
305 static int hv2value_list (pTHX_ HV *hash, value_list_t *vl)
309 if ((NULL == hash) || (NULL == vl))
312 if (NULL == (tmp = hv_fetch (hash, "type", 4, 0))) {
313 log_err ("hv2value_list: No type given.");
317 sstrncpy (vl->type, SvPV_nolen (*tmp), sizeof (vl->type));
319 if ((NULL == (tmp = hv_fetch (hash, "values", 6, 0)))
320 || (! (SvROK (*tmp) && (SVt_PVAV == SvTYPE (SvRV (*tmp)))))) {
321 log_err ("hv2value_list: No valid values given.");
326 AV *array = (AV *)SvRV (*tmp);
327 int len = av_len (array) + 1;
332 vl->values = (value_t *)smalloc (len * sizeof (value_t));
333 vl->values_len = av2value (aTHX_ vl->type, (AV *)SvRV (*tmp),
336 if (-1 == vl->values_len) {
342 if (NULL != (tmp = hv_fetch (hash, "time", 4, 0)))
343 vl->time = (time_t)SvIV (*tmp);
345 if (NULL != (tmp = hv_fetch (hash, "interval", 8, 0)))
346 vl->interval = SvIV (*tmp);
348 if (NULL != (tmp = hv_fetch (hash, "host", 4, 0)))
349 sstrncpy (vl->host, SvPV_nolen (*tmp), sizeof (vl->host));
351 sstrncpy (vl->host, hostname_g, sizeof (vl->host));
353 if (NULL != (tmp = hv_fetch (hash, "plugin", 6, 0)))
354 sstrncpy (vl->plugin, SvPV_nolen (*tmp), sizeof (vl->plugin));
356 if (NULL != (tmp = hv_fetch (hash, "plugin_instance", 15, 0)))
357 sstrncpy (vl->plugin_instance, SvPV_nolen (*tmp),
358 sizeof (vl->plugin_instance));
360 if (NULL != (tmp = hv_fetch (hash, "type_instance", 13, 0)))
361 sstrncpy (vl->type_instance, SvPV_nolen (*tmp),
362 sizeof (vl->type_instance));
364 } /* static int hv2value_list (pTHX_ HV *, value_list_t *) */
366 static int av2data_set (pTHX_ AV *array, char *name, data_set_t *ds)
370 if ((NULL == array) || (NULL == name) || (NULL == ds))
373 len = av_len (array);
376 log_err ("av2data_set: Invalid data set.");
380 ds->ds = (data_source_t *)smalloc ((len + 1) * sizeof (data_source_t));
381 ds->ds_num = len + 1;
383 for (i = 0; i <= len; ++i) {
384 SV **elem = av_fetch (array, i, 0);
387 log_err ("av2data_set: Failed to fetch data source %i.", i);
391 if (! (SvROK (*elem) && (SVt_PVHV == SvTYPE (SvRV (*elem))))) {
392 log_err ("av2data_set: Invalid data source.");
396 if (-1 == hv2data_source (aTHX_ (HV *)SvRV (*elem), &ds->ds[i]))
399 log_debug ("av2data_set: "
400 "DS.name = \"%s\", DS.type = %i, DS.min = %f, DS.max = %f",
401 ds->ds[i].name, ds->ds[i].type, ds->ds[i].min, ds->ds[i].max);
404 sstrncpy (ds->type, name, sizeof (ds->type));
406 } /* static int av2data_set (pTHX_ AV *, data_set_t *) */
411 * severity => $severity,
417 * plugin_instance => $instance,
418 * type_instance => $type_instance,
419 * meta => [ { name => <name>, value => <value> }, ... ]
422 static int av2notification_meta (pTHX_ AV *array, notification_meta_t **meta)
424 notification_meta_t **m = meta;
426 int len = av_len (array);
429 for (i = 0; i <= len; ++i) {
430 SV **tmp = av_fetch (array, i, 0);
436 if (! (SvROK (*tmp) && (SVt_PVHV == SvTYPE (SvRV (*tmp))))) {
437 log_warn ("av2notification_meta: Skipping invalid "
438 "meta information.");
442 hash = (HV *)SvRV (*tmp);
444 *m = (notification_meta_t *)smalloc (sizeof (**m));
446 if (NULL == (tmp = hv_fetch (hash, "name", 4, 0))) {
447 log_warn ("av2notification_meta: Skipping invalid "
448 "meta information.");
452 sstrncpy ((*m)->name, SvPV_nolen (*tmp), sizeof ((*m)->name));
454 if (NULL == (tmp = hv_fetch (hash, "value", 5, 0))) {
455 log_warn ("av2notification_meta: Skipping invalid "
456 "meta information.");
463 (*m)->nm_value.nm_double = SvNVX (*tmp);
464 (*m)->type = NM_TYPE_DOUBLE;
466 else if (SvUOK (*tmp)) {
467 (*m)->nm_value.nm_unsigned_int = SvUVX (*tmp);
468 (*m)->type = NM_TYPE_UNSIGNED_INT;
470 else if (SvIOK (*tmp)) {
471 (*m)->nm_value.nm_signed_int = SvIVX (*tmp);
472 (*m)->type = NM_TYPE_SIGNED_INT;
475 (*m)->nm_value.nm_string = sstrdup (SvPV_nolen (*tmp));
476 (*m)->type = NM_TYPE_STRING;
483 } /* static int av2notification_meta (AV *, notification_meta_t *) */
485 static int hv2notification (pTHX_ HV *hash, notification_t *n)
489 if ((NULL == hash) || (NULL == n))
492 if (NULL != (tmp = hv_fetch (hash, "severity", 8, 0)))
493 n->severity = SvIV (*tmp);
495 n->severity = NOTIF_FAILURE;
497 if (NULL != (tmp = hv_fetch (hash, "time", 4, 0)))
498 n->time = (time_t)SvIV (*tmp);
500 n->time = time (NULL);
502 if (NULL != (tmp = hv_fetch (hash, "message", 7, 0)))
503 sstrncpy (n->message, SvPV_nolen (*tmp), sizeof (n->message));
505 if (NULL != (tmp = hv_fetch (hash, "host", 4, 0)))
506 sstrncpy (n->host, SvPV_nolen (*tmp), sizeof (n->host));
508 sstrncpy (n->host, hostname_g, sizeof (n->host));
510 if (NULL != (tmp = hv_fetch (hash, "plugin", 6, 0)))
511 sstrncpy (n->plugin, SvPV_nolen (*tmp), sizeof (n->plugin));
513 if (NULL != (tmp = hv_fetch (hash, "plugin_instance", 15, 0)))
514 sstrncpy (n->plugin_instance, SvPV_nolen (*tmp),
515 sizeof (n->plugin_instance));
517 if (NULL != (tmp = hv_fetch (hash, "type", 4, 0)))
518 sstrncpy (n->type, SvPV_nolen (*tmp), sizeof (n->type));
520 if (NULL != (tmp = hv_fetch (hash, "type_instance", 13, 0)))
521 sstrncpy (n->type_instance, SvPV_nolen (*tmp),
522 sizeof (n->type_instance));
525 while (NULL != (tmp = hv_fetch (hash, "meta", 4, 0))) {
526 if (! (SvROK (*tmp) && (SVt_PVAV == SvTYPE (SvRV (*tmp))))) {
527 log_warn ("hv2notification: Ignoring invalid meta information.");
531 if (0 != av2notification_meta (aTHX_ (AV *)SvRV (*tmp), &n->meta)) {
532 plugin_notification_meta_free (n->meta);
539 } /* static int hv2notification (pTHX_ HV *, notification_t *) */
541 static int data_set2av (pTHX_ data_set_t *ds, AV *array)
545 if ((NULL == ds) || (NULL == array))
548 av_extend (array, ds->ds_num);
550 for (i = 0; i < ds->ds_num; ++i) {
551 HV *source = newHV ();
553 if (NULL == hv_store (source, "name", 4,
554 newSVpv (ds->ds[i].name, 0), 0))
557 if (NULL == hv_store (source, "type", 4, newSViv (ds->ds[i].type), 0))
560 if (! isnan (ds->ds[i].min))
561 if (NULL == hv_store (source, "min", 3,
562 newSVnv (ds->ds[i].min), 0))
565 if (! isnan (ds->ds[i].max))
566 if (NULL == hv_store (source, "max", 3,
567 newSVnv (ds->ds[i].max), 0))
570 if (NULL == av_store (array, i, newRV_noinc ((SV *)source)))
574 } /* static int data_set2av (data_set_t *, AV *) */
576 static int value_list2hv (pTHX_ value_list_t *vl, data_set_t *ds, HV *hash)
583 if ((NULL == vl) || (NULL == ds) || (NULL == hash))
586 len = vl->values_len;
588 if (ds->ds_num < len) {
589 log_warn ("value2av: Value length exceeds data set length.");
594 av_extend (values, len - 1);
596 for (i = 0; i < len; ++i) {
599 if (DS_TYPE_COUNTER == ds->ds[i].type)
600 val = newSViv (vl->values[i].counter);
602 val = newSVnv (vl->values[i].gauge);
604 if (NULL == av_store (values, i, val)) {
610 if (NULL == hv_store (hash, "values", 6, newRV_noinc ((SV *)values), 0))
614 if (NULL == hv_store (hash, "time", 4, newSViv (vl->time), 0))
617 if (NULL == hv_store (hash, "interval", 8, newSViv (vl->interval), 0))
620 if ('\0' != vl->host[0])
621 if (NULL == hv_store (hash, "host", 4, newSVpv (vl->host, 0), 0))
624 if ('\0' != vl->plugin[0])
625 if (NULL == hv_store (hash, "plugin", 6, newSVpv (vl->plugin, 0), 0))
628 if ('\0' != vl->plugin_instance[0])
629 if (NULL == hv_store (hash, "plugin_instance", 15,
630 newSVpv (vl->plugin_instance, 0), 0))
633 if ('\0' != vl->type[0])
634 if (NULL == hv_store (hash, "type", 4, newSVpv (vl->type, 0), 0))
637 if ('\0' != vl->type_instance[0])
638 if (NULL == hv_store (hash, "type_instance", 13,
639 newSVpv (vl->type_instance, 0), 0))
642 } /* static int value2av (value_list_t *, data_set_t *, HV *) */
644 static int notification_meta2av (pTHX_ notification_meta_t *meta, AV *array)
654 av_extend (array, meta_num);
656 for (i = 0; NULL != meta; meta = meta->next, ++i) {
660 if (NULL == hv_store (m, "name", 4, newSVpv (meta->name, 0), 0))
663 if (NM_TYPE_STRING == meta->type)
664 value = newSVpv (meta->nm_value.nm_string, 0);
665 else if (NM_TYPE_SIGNED_INT == meta->type)
666 value = newSViv (meta->nm_value.nm_signed_int);
667 else if (NM_TYPE_UNSIGNED_INT == meta->type)
668 value = newSVuv (meta->nm_value.nm_unsigned_int);
669 else if (NM_TYPE_DOUBLE == meta->type)
670 value = newSVnv (meta->nm_value.nm_double);
671 else if (NM_TYPE_BOOLEAN == meta->type)
672 value = meta->nm_value.nm_boolean ? &PL_sv_yes : &PL_sv_no;
676 if (NULL == hv_store (m, "value", 5, value, 0)) {
681 if (NULL == av_store (array, i, newRV_noinc ((SV *)m))) {
688 } /* static int notification_meta2av (notification_meta_t *, AV *) */
690 static int notification2hv (pTHX_ notification_t *n, HV *hash)
692 if (NULL == hv_store (hash, "severity", 8, newSViv (n->severity), 0))
696 if (NULL == hv_store (hash, "time", 4, newSViv (n->time), 0))
699 if ('\0' != *n->message)
700 if (NULL == hv_store (hash, "message", 7, newSVpv (n->message, 0), 0))
703 if ('\0' != *n->host)
704 if (NULL == hv_store (hash, "host", 4, newSVpv (n->host, 0), 0))
707 if ('\0' != *n->plugin)
708 if (NULL == hv_store (hash, "plugin", 6, newSVpv (n->plugin, 0), 0))
711 if ('\0' != *n->plugin_instance)
712 if (NULL == hv_store (hash, "plugin_instance", 15,
713 newSVpv (n->plugin_instance, 0), 0))
716 if ('\0' != *n->type)
717 if (NULL == hv_store (hash, "type", 4, newSVpv (n->type, 0), 0))
720 if ('\0' != *n->type_instance)
721 if (NULL == hv_store (hash, "type_instance", 13,
722 newSVpv (n->type_instance, 0), 0))
725 if (NULL != n->meta) {
727 if ((0 != notification_meta2av (aTHX_ n->meta, meta))
728 || (NULL == hv_store (hash, "meta", 4,
729 newRV_noinc ((SV *)meta), 0))) {
736 } /* static int notification2hv (notification_t *, HV *) */
738 static int oconfig_item2hv (pTHX_ oconfig_item_t *ci, HV *hash)
745 if (NULL == hv_store (hash, "key", 3, newSVpv (ci->key, 0), 0))
749 if (0 < ci->values_num)
750 av_extend (values, ci->values_num);
752 if (NULL == hv_store (hash, "values", 6, newRV_noinc ((SV *)values), 0)) {
758 for (i = 0; i < ci->values_num; ++i) {
761 switch (ci->values[i].type) {
762 case OCONFIG_TYPE_STRING:
763 value = newSVpv (ci->values[i].value.string, 0);
765 case OCONFIG_TYPE_NUMBER:
766 value = newSVnv ((NV)ci->values[i].value.number);
768 case OCONFIG_TYPE_BOOLEAN:
769 value = ci->values[i].value.boolean ? &PL_sv_yes : &PL_sv_no;
772 log_err ("oconfig_item2hv: Invalid value type %i.",
774 value = &PL_sv_undef;
777 if (NULL == av_store (values, i, value)) {
783 /* ignoring 'parent' member which is uninteresting in this case */
786 if (0 < ci->children_num)
787 av_extend (children, ci->children_num);
789 if (NULL == hv_store (hash, "children", 8, newRV_noinc ((SV *)children), 0)) {
795 for (i = 0; i < ci->children_num; ++i) {
796 HV *child = newHV ();
798 if (0 != oconfig_item2hv (aTHX_ ci->children + i, child)) {
804 if (NULL == av_store (children, i, newRV_noinc ((SV *)child))) {
811 } /* static int oconfig_item2hv (pTHX_ oconfig_item_t *, HV *) */
814 * Internal functions.
817 static char *get_module_name (char *buf, size_t buf_len, const char *module) {
819 if (base_name[0] == '\0')
820 status = ssnprintf (buf, buf_len, "%s", module);
822 status = ssnprintf (buf, buf_len, "%s::%s", base_name, module);
823 if ((status < 0) || ((unsigned int)status >= buf_len))
826 } /* char *get_module_name */
829 * Add a plugin's data set definition.
831 static int pplugin_register_data_set (pTHX_ char *name, AV *dataset)
837 if ((NULL == name) || (NULL == dataset))
840 if (0 != av2data_set (aTHX_ dataset, name, &ds))
843 ret = plugin_register_data_set (&ds);
847 } /* static int pplugin_register_data_set (char *, SV *) */
850 * Remove a plugin's data set definition.
852 static int pplugin_unregister_data_set (char *name)
856 return plugin_unregister_data_set (name);
857 } /* static int pplugin_unregister_data_set (char *) */
860 * Submit the values to the write functions.
862 static int pplugin_dispatch_values (pTHX_ HV *values)
864 value_list_t vl = VALUE_LIST_INIT;
871 if (0 != hv2value_list (aTHX_ values, &vl))
874 ret = plugin_dispatch_values (&vl);
878 } /* static int pplugin_dispatch_values (char *, HV *) */
881 * Submit the values to a single write function.
883 static int pplugin_write (pTHX_ const char *plugin, AV *data_set, HV *values)
886 value_list_t vl = VALUE_LIST_INIT;
893 if (0 != hv2value_list (aTHX_ values, &vl))
896 if ((NULL != data_set)
897 && (0 != av2data_set (aTHX_ data_set, vl.type, &ds)))
900 ret = plugin_write (plugin, NULL == data_set ? NULL : &ds, &vl);
902 log_warn ("Dispatching value to plugin \"%s\" failed with status %i.",
903 NULL == plugin ? "<any>" : plugin, ret);
905 if (NULL != data_set)
909 } /* static int pplugin_write (const char *plugin, HV *, HV *) */
912 * Dispatch a notification.
914 static int pplugin_dispatch_notification (pTHX_ HV *notif)
923 memset (&n, 0, sizeof (n));
925 if (0 != hv2notification (aTHX_ notif, &n))
928 ret = plugin_dispatch_notification (&n);
929 plugin_notification_meta_free (n.meta);
931 } /* static int pplugin_dispatch_notification (HV *) */
934 * Call all working functions of the given type.
936 static int pplugin_call_all (pTHX_ int type, ...)
945 if ((type < 0) || (type >= PLUGIN_TYPES))
955 XPUSHs (sv_2mortal (newSViv ((IV)type)));
957 if (PLUGIN_WRITE == type) {
959 * $_[0] = $plugin_type;
974 * values => [ $v1, ... ],
979 * plugin_instance => $instance,
980 * type_instance => $type_instance
989 ds = va_arg (ap, data_set_t *);
990 vl = va_arg (ap, value_list_t *);
992 if (-1 == data_set2av (aTHX_ ds, pds)) {
995 pds = (AV *)&PL_sv_undef;
999 if (-1 == value_list2hv (aTHX_ vl, ds, pvl)) {
1002 pvl = (HV *)&PL_sv_undef;
1006 XPUSHs (sv_2mortal (newSVpv (ds->type, 0)));
1007 XPUSHs (sv_2mortal (newRV_noinc ((SV *)pds)));
1008 XPUSHs (sv_2mortal (newRV_noinc ((SV *)pvl)));
1010 else if (PLUGIN_LOG == type) {
1016 XPUSHs (sv_2mortal (newSViv (va_arg (ap, int))));
1017 XPUSHs (sv_2mortal (newSVpv (va_arg (ap, char *), 0)));
1019 else if (PLUGIN_NOTIF == type) {
1023 * severity => $severity,
1027 * plugin => $plugin,
1029 * plugin_instance => $instance,
1030 * type_instance => $type_instance
1034 HV *notif = newHV ();
1036 n = va_arg (ap, notification_t *);
1038 if (-1 == notification2hv (aTHX_ n, notif)) {
1041 notif = (HV *)&PL_sv_undef;
1045 XPUSHs (sv_2mortal (newRV_noinc ((SV *)notif)));
1047 else if (PLUGIN_FLUSH == type) {
1050 * $_[1] = $identifier;
1052 XPUSHs (sv_2mortal (newSViv (va_arg (ap, int))));
1053 XPUSHs (sv_2mortal (newSVpv (va_arg (ap, char *), 0)));
1058 retvals = call_pv ("Collectd::plugin_call_all", G_SCALAR);
1073 } /* static int pplugin_call_all (int, ...) */
1076 * Exported Perl API.
1080 * Collectd::plugin_register_data_set (type, dataset).
1083 * type of the dataset
1086 * dataset to be registered
1088 static XS (Collectd_plugin_register_ds)
1096 log_err ("Usage: Collectd::plugin_register_data_set(type, dataset)");
1100 log_debug ("Collectd::plugin_register_data_set: "
1101 "type = \"%s\", dataset = \"%s\"",
1102 SvPV_nolen (ST (0)), SvPV_nolen (ST (1)));
1106 if (SvROK (data) && (SVt_PVAV == SvTYPE (SvRV (data)))) {
1107 ret = pplugin_register_data_set (aTHX_ SvPV_nolen (ST (0)),
1111 log_err ("Collectd::plugin_register_data_set: Invalid data.");
1119 } /* static XS (Collectd_plugin_register_ds) */
1122 * Collectd::plugin_unregister_data_set (type).
1125 * type of the dataset
1127 static XS (Collectd_plugin_unregister_ds)
1132 log_err ("Usage: Collectd::plugin_unregister_data_set(type)");
1136 log_debug ("Collectd::plugin_unregister_data_set: type = \"%s\"",
1137 SvPV_nolen (ST (0)));
1139 if (0 == pplugin_unregister_data_set (SvPV_nolen (ST (0))))
1143 } /* static XS (Collectd_plugin_register_ds) */
1146 * Collectd::plugin_dispatch_values (name, values).
1149 * name of the plugin
1152 * value list to submit
1154 static XS (Collectd_plugin_dispatch_values)
1164 log_warn ("Collectd::plugin_dispatch_values with two arguments "
1165 "is deprecated - pass the type through values->{type}.");
1168 else if (1 != items) {
1169 log_err ("Usage: Collectd::plugin_dispatch_values(values)");
1173 log_debug ("Collectd::plugin_dispatch_values: values=\"%s\"",
1174 SvPV_nolen (ST (values_idx)));
1176 values = ST (values_idx);
1178 if (! (SvROK (values) && (SVt_PVHV == SvTYPE (SvRV (values))))) {
1179 log_err ("Collectd::plugin_dispatch_values: Invalid values.");
1183 if (((2 == items) && (NULL == ST (0))) || (NULL == values))
1186 if ((2 == items) && (NULL == hv_store ((HV *)SvRV (values), "type", 4,
1187 newSVsv (ST (0)), 0))) {
1188 log_err ("Collectd::plugin_dispatch_values: Could not store type.");
1192 ret = pplugin_dispatch_values (aTHX_ (HV *)SvRV (values));
1198 } /* static XS (Collectd_plugin_dispatch_values) */
1200 /* Collectd::plugin_write (plugin, ds, vl).
1203 * name of the plugin to call, may be 'undef'
1206 * data-set that describes the submitted values, may be 'undef'
1209 * value-list to be written
1211 static XS (Collectd__plugin_write)
1222 log_err ("Usage: Collectd::plugin_write(plugin, ds, vl)");
1226 log_debug ("Collectd::plugin_write: plugin=\"%s\", ds=\"%s\", vl=\"%s\"",
1227 SvPV_nolen (ST (0)), SvOK (ST (1)) ? SvPV_nolen (ST (1)) : "",
1228 SvPV_nolen (ST (2)));
1230 if (! SvOK (ST (0)))
1233 plugin = SvPV_nolen (ST (0));
1236 if (SvROK (ds) && (SVt_PVAV == SvTYPE (SvRV (ds))))
1237 ds_array = (AV *)SvRV (ds);
1238 else if (! SvOK (ds))
1241 log_err ("Collectd::plugin_write: Invalid data-set.");
1246 if (! (SvROK (vl) && (SVt_PVHV == SvTYPE (SvRV (vl))))) {
1247 log_err ("Collectd::plugin_write: Invalid value-list.");
1251 ret = pplugin_write (aTHX_ plugin, ds_array, (HV *)SvRV (vl));
1257 } /* static XS (Collectd__plugin_write) */
1260 * Collectd::_plugin_flush (plugin, timeout, identifier).
1263 * name of the plugin to flush
1266 * timeout to use when flushing the data
1269 * data-set identifier to flush
1271 static XS (Collectd__plugin_flush)
1273 char *plugin = NULL;
1280 log_err ("Usage: Collectd::_plugin_flush(plugin, timeout, id)");
1285 plugin = SvPV_nolen (ST (0));
1288 timeout = (int)SvIV (ST (1));
1291 id = SvPV_nolen (ST (2));
1293 log_debug ("Collectd::_plugin_flush: plugin = \"%s\", timeout = %i, "
1294 "id = \"%s\"", plugin, timeout, id);
1296 if (0 == plugin_flush (plugin, timeout, id))
1300 } /* static XS (Collectd__plugin_flush) */
1303 * Collectd::plugin_dispatch_notification (notif).
1306 * notification to dispatch
1308 static XS (Collectd_plugin_dispatch_notification)
1317 log_err ("Usage: Collectd::plugin_dispatch_notification(notif)");
1321 log_debug ("Collectd::plugin_dispatch_notification: notif = \"%s\"",
1322 SvPV_nolen (ST (0)));
1326 if (! (SvROK (notif) && (SVt_PVHV == SvTYPE (SvRV (notif))))) {
1327 log_err ("Collectd::plugin_dispatch_notification: Invalid notif.");
1331 ret = pplugin_dispatch_notification (aTHX_ (HV *)SvRV (notif));
1337 } /* static XS (Collectd_plugin_dispatch_notification) */
1340 * Collectd::plugin_log (level, message).
1343 * log level (LOG_DEBUG, ... LOG_ERR)
1348 static XS (Collectd_plugin_log)
1353 log_err ("Usage: Collectd::plugin_log(level, message)");
1357 plugin_log (SvIV (ST (0)), "%s", SvPV_nolen (ST (1)));
1359 } /* static XS (Collectd_plugin_log) */
1362 * Collectd::call_by_name (...).
1364 * Call a Perl sub identified by its name passed through $Collectd::cb_name.
1366 static XS (Collectd_call_by_name)
1371 if (NULL == (tmp = get_sv ("Collectd::cb_name", 0))) {
1372 sv_setpv (get_sv ("@", 1), "cb_name has not been set");
1377 name = SvPV_nolen (tmp);
1379 if (NULL == get_cv (name, 0)) {
1380 sv_setpvf (get_sv ("@", 1), "unknown callback \"%s\"", name);
1385 /* simply pass on the subroutine call without touching the stack,
1386 * thus leaving any arguments and return values in place */
1388 } /* static XS (Collectd_call_by_name) */
1391 * collectd's perl interpreter based thread implementation.
1393 * This has been inspired by Perl's ithreads introduced in version 5.6.0.
1396 /* must be called with perl_threads->mutex locked */
1397 static void c_ithread_destroy (c_ithread_t *ithread)
1399 dTHXa (ithread->interp);
1401 assert (NULL != perl_threads);
1403 PERL_SET_CONTEXT (aTHX);
1404 log_debug ("Shutting down Perl interpreter %p...", aTHX);
1409 --perl_threads->number_of_threads;
1410 #endif /* COLLECT_DEBUG */
1412 perl_destruct (aTHX);
1415 if (NULL == ithread->prev)
1416 perl_threads->head = ithread->next;
1418 ithread->prev->next = ithread->next;
1420 if (NULL == ithread->next)
1421 perl_threads->tail = ithread->prev;
1423 ithread->next->prev = ithread->prev;
1427 } /* static void c_ithread_destroy (c_ithread_t *) */
1429 static void c_ithread_destructor (void *arg)
1431 c_ithread_t *ithread = (c_ithread_t *)arg;
1432 c_ithread_t *t = NULL;
1434 if (NULL == perl_threads)
1437 pthread_mutex_lock (&perl_threads->mutex);
1439 for (t = perl_threads->head; NULL != t; t = t->next)
1443 /* the ithread no longer exists */
1447 c_ithread_destroy (ithread);
1449 pthread_mutex_unlock (&perl_threads->mutex);
1451 } /* static void c_ithread_destructor (void *) */
1453 /* must be called with perl_threads->mutex locked */
1454 static c_ithread_t *c_ithread_create (PerlInterpreter *base)
1456 c_ithread_t *t = NULL;
1459 assert (NULL != perl_threads);
1461 t = (c_ithread_t *)smalloc (sizeof (c_ithread_t));
1462 memset (t, 0, sizeof (c_ithread_t));
1464 t->interp = (NULL == base)
1466 : perl_clone (base, CLONEf_KEEP_PTR_TABLE);
1470 if ((NULL != base) && (NULL != PL_endav)) {
1471 av_clear (PL_endav);
1472 av_undef (PL_endav);
1477 ++perl_threads->number_of_threads;
1478 #endif /* COLLECT_DEBUG */
1482 if (NULL == perl_threads->tail) {
1483 perl_threads->head = t;
1487 perl_threads->tail->next = t;
1488 t->prev = perl_threads->tail;
1491 perl_threads->tail = t;
1493 pthread_setspecific (perl_thr_key, (const void *)t);
1495 } /* static c_ithread_t *c_ithread_create (PerlInterpreter *) */
1498 * Interface to collectd.
1501 static int perl_init (void)
1505 if (NULL == perl_threads)
1509 c_ithread_t *t = NULL;
1511 pthread_mutex_lock (&perl_threads->mutex);
1512 t = c_ithread_create (perl_threads->head->interp);
1513 pthread_mutex_unlock (&perl_threads->mutex);
1518 log_debug ("perl_init: c_ithread: interp = %p (active threads: %i)",
1519 aTHX, perl_threads->number_of_threads);
1520 return pplugin_call_all (aTHX_ PLUGIN_INIT);
1521 } /* static int perl_init (void) */
1523 static int perl_read (void)
1527 if (NULL == perl_threads)
1531 c_ithread_t *t = NULL;
1533 pthread_mutex_lock (&perl_threads->mutex);
1534 t = c_ithread_create (perl_threads->head->interp);
1535 pthread_mutex_unlock (&perl_threads->mutex);
1540 log_debug ("perl_read: c_ithread: interp = %p (active threads: %i)",
1541 aTHX, perl_threads->number_of_threads);
1542 return pplugin_call_all (aTHX_ PLUGIN_READ);
1543 } /* static int perl_read (void) */
1545 static int perl_write (const data_set_t *ds, const value_list_t *vl)
1549 if (NULL == perl_threads)
1553 c_ithread_t *t = NULL;
1555 pthread_mutex_lock (&perl_threads->mutex);
1556 t = c_ithread_create (perl_threads->head->interp);
1557 pthread_mutex_unlock (&perl_threads->mutex);
1562 log_debug ("perl_write: c_ithread: interp = %p (active threads: %i)",
1563 aTHX, perl_threads->number_of_threads);
1564 return pplugin_call_all (aTHX_ PLUGIN_WRITE, ds, vl);
1565 } /* static int perl_write (const data_set_t *, const value_list_t *) */
1567 static void perl_log (int level, const char *msg)
1571 if (NULL == perl_threads)
1575 c_ithread_t *t = NULL;
1577 pthread_mutex_lock (&perl_threads->mutex);
1578 t = c_ithread_create (perl_threads->head->interp);
1579 pthread_mutex_unlock (&perl_threads->mutex);
1584 pplugin_call_all (aTHX_ PLUGIN_LOG, level, msg);
1586 } /* static void perl_log (int, const char *) */
1588 static int perl_notify (const notification_t *notif)
1592 if (NULL == perl_threads)
1596 c_ithread_t *t = NULL;
1598 pthread_mutex_lock (&perl_threads->mutex);
1599 t = c_ithread_create (perl_threads->head->interp);
1600 pthread_mutex_unlock (&perl_threads->mutex);
1604 return pplugin_call_all (aTHX_ PLUGIN_NOTIF, notif);
1605 } /* static int perl_notify (const notification_t *) */
1607 static int perl_flush (int timeout, const char *identifier)
1611 if (NULL == perl_threads)
1615 c_ithread_t *t = NULL;
1617 pthread_mutex_lock (&perl_threads->mutex);
1618 t = c_ithread_create (perl_threads->head->interp);
1619 pthread_mutex_unlock (&perl_threads->mutex);
1623 return pplugin_call_all (aTHX_ PLUGIN_FLUSH, timeout, identifier);
1624 } /* static int perl_flush (const int) */
1626 static int perl_shutdown (void)
1628 c_ithread_t *t = NULL;
1634 plugin_unregister_complex_config ("perl");
1636 if (NULL == perl_threads)
1640 c_ithread_t *t = NULL;
1642 pthread_mutex_lock (&perl_threads->mutex);
1643 t = c_ithread_create (perl_threads->head->interp);
1644 pthread_mutex_unlock (&perl_threads->mutex);
1649 log_debug ("perl_shutdown: c_ithread: interp = %p (active threads: %i)",
1650 aTHX, perl_threads->number_of_threads);
1652 plugin_unregister_log ("perl");
1653 plugin_unregister_notification ("perl");
1654 plugin_unregister_init ("perl");
1655 plugin_unregister_read ("perl");
1656 plugin_unregister_write ("perl");
1657 plugin_unregister_flush ("perl");
1659 ret = pplugin_call_all (aTHX_ PLUGIN_SHUTDOWN);
1661 pthread_mutex_lock (&perl_threads->mutex);
1662 t = perl_threads->tail;
1665 c_ithread_t *thr = t;
1667 /* the pointer has to be advanced before destroying
1668 * the thread as this will free the memory */
1671 c_ithread_destroy (thr);
1674 pthread_mutex_unlock (&perl_threads->mutex);
1675 pthread_mutex_destroy (&perl_threads->mutex);
1677 sfree (perl_threads);
1679 pthread_key_delete (perl_thr_key);
1683 plugin_unregister_shutdown ("perl");
1685 } /* static void perl_shutdown (void) */
1688 * Access functions for global variables.
1690 * These functions implement the "magic" used to access
1691 * the global variables from Perl.
1694 static int g_pv_get (pTHX_ SV *var, MAGIC *mg)
1696 char *pv = mg->mg_ptr;
1699 } /* static int g_pv_get (pTHX_ SV *, MAGIC *) */
1701 static int g_pv_set (pTHX_ SV *var, MAGIC *mg)
1703 char *pv = mg->mg_ptr;
1704 sstrncpy (pv, SvPV_nolen (var), DATA_MAX_NAME_LEN);
1706 } /* static int g_pv_set (pTHX_ SV *, MAGIC *) */
1708 static int g_iv_get (pTHX_ SV *var, MAGIC *mg)
1710 int *iv = (int *)mg->mg_ptr;
1711 sv_setiv (var, *iv);
1713 } /* static int g_iv_get (pTHX_ SV *, MAGIC *) */
1715 static int g_iv_set (pTHX_ SV *var, MAGIC *mg)
1717 int *iv = (int *)mg->mg_ptr;
1718 *iv = (int)SvIV (var);
1720 } /* static int g_iv_set (pTHX_ SV *, MAGIC *) */
1722 static MGVTBL g_pv_vtbl = {
1723 g_pv_get, g_pv_set, NULL, NULL, NULL, NULL, NULL
1724 #if HAVE_PERL_STRUCT_MGVTBL_SVT_LOCAL
1728 static MGVTBL g_iv_vtbl = {
1729 g_iv_get, g_iv_set, NULL, NULL, NULL, NULL, NULL
1730 #if HAVE_PERL_STRUCT_MGVTBL_SVT_LOCAL
1735 /* bootstrap the Collectd module */
1736 static void xs_init (pTHX)
1740 char *file = __FILE__;
1746 /* enable usage of Perl modules using shared libraries */
1747 newXS ("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
1750 for (i = 0; NULL != api[i].f; ++i)
1751 newXS (api[i].name, api[i].f, file);
1753 stash = gv_stashpv ("Collectd", 1);
1755 /* export "constants" */
1756 for (i = 0; '\0' != constants[i].name[0]; ++i)
1757 newCONSTSUB (stash, constants[i].name, newSViv (constants[i].value));
1759 /* export global variables
1760 * by adding "magic" to the SV's representing the globale variables
1761 * perl is able to automagically call the get/set function when
1762 * accessing any such variable (this is basically the same as using
1764 /* global strings */
1765 for (i = 0; '\0' != g_strings[i].name[0]; ++i) {
1766 tmp = get_sv (g_strings[i].name, 1);
1767 sv_magicext (tmp, NULL, PERL_MAGIC_ext, &g_pv_vtbl,
1768 g_strings[i].var, 0);
1771 /* global integers */
1772 for (i = 0; '\0' != g_integers[i].name[0]; ++i) {
1773 tmp = get_sv (g_integers[i].name, 1);
1774 sv_magicext (tmp, NULL, PERL_MAGIC_ext, &g_iv_vtbl,
1775 (char *)g_integers[i].var, 0);
1778 } /* static void xs_init (pTHX) */
1780 /* Initialize the global Perl interpreter. */
1781 static int init_pi (int argc, char **argv)
1785 if (NULL != perl_threads)
1788 log_info ("Initializing Perl interpreter...");
1793 for (i = 0; i < argc; ++i)
1794 log_debug ("argv[%i] = \"%s\"", i, argv[i]);
1796 #endif /* COLLECT_DEBUG */
1798 if (0 != pthread_key_create (&perl_thr_key, c_ithread_destructor)) {
1799 log_err ("init_pi: pthread_key_create failed");
1801 /* this must not happen - cowardly giving up if it does */
1806 /* On FreeBSD, PERL_SYS_INIT3 expands to some expression which
1807 * triggers a "value computed is not used" warning by gcc. */
1810 PERL_SYS_INIT3 (&argc, &argv, &environ);
1812 perl_threads = (c_ithread_list_t *)smalloc (sizeof (c_ithread_list_t));
1813 memset (perl_threads, 0, sizeof (c_ithread_list_t));
1815 pthread_mutex_init (&perl_threads->mutex, NULL);
1816 /* locking the mutex should not be necessary at this point
1817 * but let's just do it for the sake of completeness */
1818 pthread_mutex_lock (&perl_threads->mutex);
1820 perl_threads->head = c_ithread_create (NULL);
1821 perl_threads->tail = perl_threads->head;
1823 if (NULL == (perl_threads->head->interp = perl_alloc ())) {
1824 log_err ("init_pi: Not enough memory.");
1828 aTHX = perl_threads->head->interp;
1829 pthread_mutex_unlock (&perl_threads->mutex);
1831 perl_construct (aTHX);
1833 PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
1835 if (0 != perl_parse (aTHX_ xs_init, argc, argv, NULL)) {
1836 SV *err = get_sv ("@", 1);
1837 log_err ("init_pi: Unable to bootstrap Collectd: %s",
1840 perl_destruct (perl_threads->head->interp);
1841 perl_free (perl_threads->head->interp);
1842 sfree (perl_threads);
1844 pthread_key_delete (perl_thr_key);
1848 /* Set $0 to "collectd" because perl_parse() has to set it to "-e". */
1849 sv_setpv (get_sv ("0", 0), "collectd");
1853 plugin_register_log ("perl", perl_log);
1854 plugin_register_notification ("perl", perl_notify);
1855 plugin_register_init ("perl", perl_init);
1857 plugin_register_read ("perl", perl_read);
1859 plugin_register_write ("perl", perl_write);
1860 plugin_register_flush ("perl", perl_flush);
1861 plugin_register_shutdown ("perl", perl_shutdown);
1863 } /* static int init_pi (const char **, const int) */
1866 * LoadPlugin "<Plugin>"
1868 static int perl_config_loadplugin (pTHX_ oconfig_item_t *ci)
1870 char module_name[DATA_MAX_NAME_LEN];
1874 if ((0 != ci->children_num) || (1 != ci->values_num)
1875 || (OCONFIG_TYPE_STRING != ci->values[0].type)) {
1876 log_err ("LoadPlugin expects a single string argument.");
1880 value = ci->values[0].value.string;
1882 if (NULL == get_module_name (module_name, sizeof (module_name), value)) {
1883 log_err ("Invalid module name %s", value);
1887 if (0 != init_pi (perl_argc, perl_argv))
1890 assert (NULL != perl_threads);
1891 assert (NULL != perl_threads->head);
1893 aTHX = perl_threads->head->interp;
1895 log_debug ("perl_config: loading perl plugin \"%s\"", value);
1896 load_module (PERL_LOADMOD_NOIMPORT,
1897 newSVpv (module_name, strlen (module_name)), Nullsv);
1899 } /* static int perl_config_loadplugin (oconfig_item_it *) */
1904 static int perl_config_basename (pTHX_ oconfig_item_t *ci)
1908 if ((0 != ci->children_num) || (1 != ci->values_num)
1909 || (OCONFIG_TYPE_STRING != ci->values[0].type)) {
1910 log_err ("BaseName expects a single string argument.");
1914 value = ci->values[0].value.string;
1916 log_debug ("perl_config: Setting plugin basename to \"%s\"", value);
1917 sstrncpy (base_name, value, sizeof (base_name));
1919 } /* static int perl_config_basename (oconfig_item_it *) */
1922 * EnableDebugger "<Package>"|""
1924 static int perl_config_enabledebugger (pTHX_ oconfig_item_t *ci)
1928 if ((0 != ci->children_num) || (1 != ci->values_num)
1929 || (OCONFIG_TYPE_STRING != ci->values[0].type)) {
1930 log_err ("EnableDebugger expects a single string argument.");
1934 if (NULL != perl_threads) {
1935 log_warn ("EnableDebugger has no effects if used after LoadPlugin.");
1939 value = ci->values[0].value.string;
1941 perl_argv = (char **)realloc (perl_argv,
1942 (++perl_argc + 1) * sizeof (char *));
1944 if (NULL == perl_argv) {
1945 log_err ("perl_config: Not enough memory.");
1949 if ('\0' == value[0]) {
1950 perl_argv[perl_argc - 1] = "-d";
1953 perl_argv[perl_argc - 1] = (char *)smalloc (strlen (value) + 4);
1954 sstrncpy (perl_argv[perl_argc - 1], "-d:", 4);
1955 sstrncpy (perl_argv[perl_argc - 1] + 3, value, strlen (value) + 1);
1958 perl_argv[perl_argc] = NULL;
1960 } /* static int perl_config_enabledebugger (oconfig_item_it *) */
1963 * IncludeDir "<Dir>"
1965 static int perl_config_includedir (pTHX_ oconfig_item_t *ci)
1969 if ((0 != ci->children_num) || (1 != ci->values_num)
1970 || (OCONFIG_TYPE_STRING != ci->values[0].type)) {
1971 log_err ("IncludeDir expects a single string argument.");
1975 value = ci->values[0].value.string;
1978 perl_argv = (char **)realloc (perl_argv,
1979 (++perl_argc + 1) * sizeof (char *));
1981 if (NULL == perl_argv) {
1982 log_err ("perl_config: Not enough memory.");
1986 perl_argv[perl_argc - 1] = (char *)smalloc (strlen (value) + 3);
1987 sstrncpy(perl_argv[perl_argc - 1], "-I", 3);
1988 sstrncpy(perl_argv[perl_argc - 1] + 2, value, strlen (value) + 1);
1990 perl_argv[perl_argc] = NULL;
1993 /* prepend the directory to @INC */
1994 av_unshift (GvAVn (PL_incgv), 1);
1995 av_store (GvAVn (PL_incgv), 0, newSVpv (value, strlen (value)));
1998 } /* static int perl_config_includedir (oconfig_item_it *) */
2003 static int perl_config_plugin (pTHX_ oconfig_item_t *ci)
2013 if ((1 != ci->values_num) || (OCONFIG_TYPE_STRING != ci->values[0].type)) {
2014 log_err ("LoadPlugin expects a single string argument.");
2018 plugin = ci->values[0].value.string;
2021 if (0 != oconfig_item2hv (aTHX_ ci, config)) {
2025 log_err ("Unable to convert configuration to a Perl hash value.");
2026 config = (HV *)&PL_sv_undef;
2034 XPUSHs (sv_2mortal (newSVpv (plugin, 0)));
2035 XPUSHs (sv_2mortal (newRV_noinc ((SV *)config)));
2039 retvals = call_pv ("Collectd::_plugin_dispatch_config", G_SCALAR);
2054 } /* static int perl_config_plugin (oconfig_item_it *) */
2056 static int perl_config (oconfig_item_t *ci)
2063 for (i = 0; i < ci->children_num; ++i) {
2064 oconfig_item_t *c = ci->children + i;
2065 int current_status = 0;
2067 if (NULL != perl_threads)
2068 aTHX = PERL_GET_CONTEXT;
2070 if (0 == strcasecmp (c->key, "LoadPlugin"))
2071 current_status = perl_config_loadplugin (aTHX_ c);
2072 else if (0 == strcasecmp (c->key, "BaseName"))
2073 current_status = perl_config_basename (aTHX_ c);
2074 else if (0 == strcasecmp (c->key, "EnableDebugger"))
2075 current_status = perl_config_enabledebugger (aTHX_ c);
2076 else if (0 == strcasecmp (c->key, "IncludeDir"))
2077 current_status = perl_config_includedir (aTHX_ c);
2078 else if (0 == strcasecmp (c->key, "Plugin"))
2079 current_status = perl_config_plugin (aTHX_ c);
2082 log_warn ("Ignoring unknown config key \"%s\".", c->key);
2086 /* fatal error - it's up to perl_config_* to clean up */
2087 if (0 > current_status) {
2088 log_err ("Configuration failed with a fatal error - "
2089 "plugin disabled!");
2090 return current_status;
2093 status += current_status;
2096 } /* static int perl_config (oconfig_item_t *) */
2098 void module_register (void)
2101 perl_argv = (char **)smalloc ((perl_argc + 1) * sizeof (char *));
2103 /* default options for the Perl interpreter */
2105 perl_argv[1] = "-MCollectd";
2106 perl_argv[2] = "-e";
2108 perl_argv[4] = NULL;
2110 plugin_register_complex_config ("perl", perl_config);
2112 } /* void module_register (void) */
2114 /* vim: set sw=4 ts=4 tw=78 noexpandtab : */