2 * collectd - src/perl.c
3 * Copyright (C) 2007 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.
29 #include "configfile.h"
36 /* Some versions of Perl define their own version of DEBUG... :-/ */
41 /* ... while we want the definition found in plugin.h. */
47 #define PLUGIN_WRITE 2
48 #define PLUGIN_SHUTDOWN 3
51 #define PLUGIN_TYPES 5
53 #define PLUGIN_DATASET 255
55 #define log_debug(...) DEBUG ("perl: " __VA_ARGS__)
56 #define log_info(...) INFO ("perl: " __VA_ARGS__)
57 #define log_warn(...) WARNING ("perl: " __VA_ARGS__)
58 #define log_err(...) ERROR ("perl: " __VA_ARGS__)
61 /* this is defined in DynaLoader.a */
62 void boot_DynaLoader (PerlInterpreter *, CV *);
64 static XS (Collectd_plugin_register);
65 static XS (Collectd_plugin_unregister);
66 static XS (Collectd_plugin_dispatch_values);
67 static XS (Collectd_plugin_log);
91 /* valid configuration file keys */
92 static const char *config_keys[] =
98 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
100 static PerlInterpreter *perl = NULL;
102 static int perl_argc = 0;
103 static char **perl_argv = NULL;
105 static char base_name[DATA_MAX_NAME_LEN] = "";
107 static char *plugin_types[] = { "init", "read", "write", "shutdown" };
108 static HV *plugins[PLUGIN_TYPES];
109 static HV *data_sets;
116 { "Collectd::plugin_register", Collectd_plugin_register },
117 { "Collectd::plugin_unregister", Collectd_plugin_unregister },
118 { "Collectd::plugin_dispatch_values", Collectd_plugin_dispatch_values },
119 { "Collectd::plugin_log", Collectd_plugin_log },
125 * Helper functions for data type conversion.
140 static int hv2data_source (HV *hash, data_source_t *ds)
144 if ((NULL == hash) || (NULL == ds))
147 if (NULL != (tmp = Perl_hv_fetch (perl, hash, "name", 4, 0))) {
148 strncpy (ds->name, SvPV_nolen (*tmp), DATA_MAX_NAME_LEN);
149 ds->name[DATA_MAX_NAME_LEN - 1] = '\0';
152 log_err ("hv2data_source: No DS name given.");
156 if (NULL != (tmp = Perl_hv_fetch (perl, hash, "type", 4, 0))) {
157 ds->type = SvIV (*tmp);
159 if ((DS_TYPE_COUNTER != ds->type) && (DS_TYPE_GAUGE != ds->type)) {
160 log_err ("hv2data_source: Invalid DS type.");
165 ds->type = DS_TYPE_COUNTER;
168 if (NULL != (tmp = Perl_hv_fetch (perl, hash, "min", 3, 0)))
169 ds->min = SvNV (*tmp);
173 if (NULL != (tmp = Perl_hv_fetch (perl, hash, "max", 3, 0)))
174 ds->max = SvNV (*tmp);
178 } /* static data_source_t *hv2data_source (HV *) */
180 static int av2value (char *name, AV *array, value_t *value, int len)
184 ds_types_t *ds = NULL;
188 if ((NULL == name) || (NULL == array) || (NULL == value))
191 if (Perl_av_len (perl, array) < len - 1)
192 len = Perl_av_len (perl, array) + 1;
197 tmp = Perl_hv_fetch (perl, data_sets, name, strlen (name), 0);
199 log_err ("av2value: No dataset for \"%s\".", name);
202 ds = (ds_types_t *)SvIV ((SV *)SvRV (*tmp));
205 log_warn ("av2value: Value length exceeds data set length.");
209 for (i = 0; i < len; ++i) {
210 SV **tmp = Perl_av_fetch (perl, array, i, 0);
213 if (DS_TYPE_COUNTER == ds->values[i])
214 value[i].counter = SvIV (*tmp);
216 value[i].gauge = SvNV (*tmp);
223 } /* static int av2value (char *, AV *, value_t *, int) */
225 static int data_set2av (data_set_t *ds, AV *array)
229 if ((NULL == ds) || (NULL == array))
232 Perl_av_extend (perl, array, ds->ds_num);
234 for (i = 0; i < ds->ds_num; ++i) {
235 HV *source = Perl_newHV (perl);
237 if (NULL == Perl_hv_store (perl, source, "name", 4,
238 Perl_newSVpv (perl, ds->ds[i].name, 0), 0))
241 if (NULL == Perl_hv_store (perl, source, "type", 4,
242 Perl_newSViv (perl, ds->ds[i].type), 0))
245 if (! isnan (ds->ds[i].min))
246 if (NULL == Perl_hv_store (perl, source, "min", 3,
247 Perl_newSVnv (perl, ds->ds[i].min), 0))
250 if (! isnan (ds->ds[i].max))
251 if (NULL == Perl_hv_store (perl, source, "max", 3,
252 Perl_newSVnv (perl, ds->ds[i].max), 0))
255 if (NULL == Perl_av_store (perl, array, i,
256 Perl_newRV_noinc (perl, (SV *)source)))
260 } /* static int data_set2av (data_set_t *, AV *) */
262 static int value_list2hv (value_list_t *vl, data_set_t *ds, HV *hash)
269 if ((NULL == vl) || (NULL == ds) || (NULL == hash))
272 len = vl->values_len;
274 if (ds->ds_num < len) {
275 log_warn ("value2av: Value length exceeds data set length.");
279 values = Perl_newAV (perl);
280 Perl_av_extend (perl, values, len - 1);
282 for (i = 0; i < len; ++i) {
285 if (DS_TYPE_COUNTER == ds->ds[i].type)
286 val = Perl_newSViv (perl, vl->values[i].counter);
288 val = Perl_newSVnv (perl, vl->values[i].gauge);
290 if (NULL == Perl_av_store (perl, values, i, val)) {
291 Perl_av_undef (perl, values);
296 if (NULL == Perl_hv_store (perl, hash, "values", 6,
297 Perl_newRV_noinc (perl, (SV *)values), 0))
301 if (NULL == Perl_hv_store (perl, hash, "time", 4,
302 Perl_newSViv (perl, vl->time), 0))
305 if ('\0' != vl->host[0])
306 if (NULL == Perl_hv_store (perl, hash, "host", 4,
307 Perl_newSVpv (perl, vl->host, 0), 0))
310 if ('\0' != vl->plugin[0])
311 if (NULL == Perl_hv_store (perl, hash, "plugin", 6,
312 Perl_newSVpv (perl, vl->plugin, 0), 0))
315 if ('\0' != vl->plugin_instance[0])
316 if (NULL == Perl_hv_store (perl, hash, "plugin_instance", 15,
317 Perl_newSVpv (perl, vl->plugin_instance, 0), 0))
320 if ('\0' != vl->type_instance[0])
321 if (NULL == Perl_hv_store (perl, hash, "type_instance", 13,
322 Perl_newSVpv (perl, vl->type_instance, 0), 0))
325 } /* static int value2av (value_list_t *, data_set_t *, HV *) */
329 * Internal functions.
332 static char *get_module_name (char *buf, size_t buf_len, const char *module) {
334 if (base_name[0] == '\0')
335 status = snprintf (buf, buf_len, "%s", module);
337 status = snprintf (buf, buf_len, "%s::%s", base_name, module);
338 if ((status < 0) || (status >= buf_len))
340 buf[buf_len - 1] = '\0';
342 } /* char *get_module_name */
345 * Add a new plugin with the given name.
347 static int pplugin_register (int type, const char *name, SV *sub)
351 if ((type < 0) || (type >= PLUGIN_TYPES))
357 p = (pplugin_t *)smalloc (sizeof (pplugin_t));
358 /* this happens during parsing of config file,
359 * thus interval_g is not set correctly */
362 p->sub = Perl_newSVsv (perl, sub);
364 if (NULL == Perl_hv_store (perl, plugins[type], name, strlen (name),
365 Perl_sv_setref_pv (perl, Perl_newSV (perl, 0), 0, p), 0)) {
366 log_debug ("pplugin_register: Failed to add plugin \"%s\" (\"%s\")",
367 name, SvPV_nolen (sub));
368 Perl_sv_free (perl, p->sub);
373 } /* static int pplugin_register (int, char *, SV *) */
376 * Removes the plugin with the given name and frees any ressources.
378 static int pplugin_unregister (int type, char *name)
382 if ((type < 0) || (type >= PLUGIN_TYPES))
388 /* freeing the allocated memory of the element itself (pplugin_t *) causes
389 * a segfault during perl_destruct () thus I assume perl somehow takes
392 tmp = Perl_hv_delete (perl, plugins[type], name, strlen (name), 0);
394 pplugin_t *p = (pplugin_t *)SvIV ((SV *)SvRV (tmp));
395 Perl_sv_free (perl, p->sub);
398 } /* static int pplugin_unregister (char *) */
401 * Add a plugin's data set definition.
403 static int pplugin_register_data_set (char *name, AV *dataset)
408 data_source_t *ds = NULL;
409 data_set_t *set = NULL;
411 ds_types_t *types = NULL;
413 if ((NULL == name) || (NULL == dataset))
416 len = Perl_av_len (perl, dataset);
421 ds = (data_source_t *)smalloc ((len + 1) * sizeof (data_source_t));
422 set = (data_set_t *)smalloc (sizeof (data_set_t));
424 types = (ds_types_t *)smalloc (sizeof (ds_types_t));
425 types->len = len + 1;
426 types->values = (int *)smalloc ((types->len) * sizeof (int));
428 for (i = 0; i <= len; ++i) {
429 SV **elem = Perl_av_fetch (perl, dataset, i, 0);
434 if (! (SvROK (*elem) && (SVt_PVHV == SvTYPE (SvRV (*elem))))) {
435 log_err ("pplugin_register_data_set: Invalid data source.");
439 if (-1 == hv2data_source ((HV *)SvRV (*elem), &ds[i]))
442 types->values[i] = ds[i].type;
443 log_debug ("pplugin_register_data_set: "
444 "DS.name = \"%s\", DS.type = %i, DS.min = %f, DS.max = %f",
445 ds[i].name, ds[i].type, ds[i].min, ds[i].max);
448 if (NULL == Perl_hv_store (perl, data_sets, name, strlen (name),
449 Perl_sv_setref_pv (perl, Perl_newSV (perl, 0), 0, types), 0))
452 strncpy (set->type, name, DATA_MAX_NAME_LEN);
453 set->type[DATA_MAX_NAME_LEN - 1] = '\0';
455 set->ds_num = len + 1;
457 return plugin_register_data_set (set);
458 } /* static int pplugin_register_data_set (char *, SV *) */
461 * Remove a plugin's data set definition.
463 static int pplugin_unregister_data_set (char *name)
470 /* freeing the allocated memory of the element itself (ds_types_t *)
471 * causes a segfault during perl_destruct () thus I assume perl somehow
472 * takes care of this... */
474 tmp = Perl_hv_delete (perl, data_sets, name, strlen (name), 0);
476 ds_types_t *ds = (ds_types_t *)SvIV ((SV *)SvRV (tmp));
479 return plugin_unregister_data_set (name);
480 } /* static int pplugin_unregister_data_set (char *) */
483 * Submit the values to the write functions.
487 * values => [ @values ],
491 * plugin_instance => $pinstance,
492 * type_instance => $tinstance,
495 static int pplugin_dispatch_values (char *name, HV *values)
497 value_list_t list = VALUE_LIST_INIT;
504 if ((NULL == name) || (NULL == values))
507 if ((NULL == (tmp = Perl_hv_fetch (perl, values, "values", 6, 0)))
508 || (! (SvROK (*tmp) && (SVt_PVAV == SvTYPE (SvRV (*tmp)))))) {
509 log_err ("pplugin_dispatch_values: No valid values given.");
514 AV *array = (AV *)SvRV (*tmp);
515 int len = Perl_av_len (perl, array) + 1;
517 val = (value_t *)smalloc (len * sizeof (value_t));
519 list.values_len = av2value (name, (AV *)SvRV (*tmp), val, len);
522 if (-1 == list.values_len) {
528 if (NULL != (tmp = Perl_hv_fetch (perl, values, "time", 4, 0))) {
529 list.time = (time_t)SvIV (*tmp);
532 list.time = time (NULL);
535 if (NULL != (tmp = Perl_hv_fetch (perl, values, "host", 4, 0))) {
536 strncpy (list.host, SvPV_nolen (*tmp), DATA_MAX_NAME_LEN);
537 list.host[DATA_MAX_NAME_LEN - 1] = '\0';
540 strcpy (list.host, hostname_g);
543 if (NULL != (tmp = Perl_hv_fetch (perl, values, "plugin", 6, 0))) {
544 strncpy (list.plugin, SvPV_nolen (*tmp), DATA_MAX_NAME_LEN);
545 list.plugin[DATA_MAX_NAME_LEN - 1] = '\0';
548 if (NULL != (tmp = Perl_hv_fetch (perl, values,
549 "plugin_instance", 15, 0))) {
550 strncpy (list.plugin_instance, SvPV_nolen (*tmp), DATA_MAX_NAME_LEN);
551 list.plugin_instance[DATA_MAX_NAME_LEN - 1] = '\0';
554 if (NULL != (tmp = Perl_hv_fetch (perl, values, "type_instance", 13, 0))) {
555 strncpy (list.type_instance, SvPV_nolen (*tmp), DATA_MAX_NAME_LEN);
556 list.type_instance[DATA_MAX_NAME_LEN - 1] = '\0';
559 ret = plugin_dispatch_values (name, &list);
563 } /* static int pplugin_dispatch_values (char *, HV *) */
566 * Call a plugin's working function.
568 static int pplugin_call (int type, char *name, SV *sub, va_list ap)
571 I32 xflags = G_NOARGS;
577 if ((type < 0) || (type >= PLUGIN_TYPES))
585 if (PLUGIN_WRITE == type) {
587 * $_[0] = $plugin_type;
602 * values => [ $v1, ... ],
606 * plugin_instance => $instance,
607 * type_instance => $type_instance
613 AV *pds = Perl_newAV (perl);
614 HV *pvl = Perl_newHV (perl);
616 ds = va_arg (ap, data_set_t *);
617 vl = va_arg (ap, value_list_t *);
619 if (-1 == data_set2av (ds, pds))
622 if (-1 == value_list2hv (vl, ds, pvl))
625 XPUSHs (sv_2mortal (Perl_newSVpv (perl, ds->type, 0)));
626 XPUSHs (sv_2mortal (Perl_newRV_noinc (perl, (SV *)pds)));
627 XPUSHs (sv_2mortal (Perl_newRV_noinc (perl, (SV *)pvl)));
631 else if (PLUGIN_LOG == type) {
637 XPUSHs (sv_2mortal (Perl_newSViv (perl, va_arg (ap, int))));
638 XPUSHs (sv_2mortal (Perl_newSVpv (perl, va_arg (ap, char *), 0)));
645 /* prevent an endless loop */
646 if (PLUGIN_LOG != type)
647 log_debug ("pplugin_call: executing %s::%s->%s()",
648 base_name, name, plugin_types[type]);
650 retvals = Perl_call_sv (perl, sub, G_SCALAR | xflags);
654 if (PLUGIN_LOG != type)
655 log_warn ("pplugin_call: "
656 "%s::%s->%s() returned void - assuming true",
657 base_name, name, plugin_types[type]);
669 } /* static int pplugin_call (int, char *, SV *, va_list) */
672 * Call all working functions of the given type.
674 static int pplugin_call_all (int type, ...)
681 if ((type < 0) || (type >= PLUGIN_TYPES))
684 if (0 == Perl_hv_iterinit (perl, plugins[type]))
687 while (NULL != (tmp = Perl_hv_iternextsv (perl, plugins[type],
696 p = (pplugin_t *)SvIV ((SV *)SvRV (tmp));
698 if (p->wait_left > 0)
699 p->wait_left -= interval_g;
701 if (p->wait_left > 0)
704 if (0 == (status = pplugin_call (type, plugin, p->sub, ap))) {
706 p->wait_time = interval_g;
708 else if (PLUGIN_READ == type) {
709 p->wait_left = p->wait_time;
712 if (p->wait_time > 86400)
713 p->wait_time = 86400;
715 log_warn ("%s->read() failed. Will suspend it for %i seconds.",
716 plugin, p->wait_left);
718 else if (PLUGIN_INIT == type) {
721 log_err ("%s->init() failed. Plugin will be disabled.",
724 for (i = 0; i < PLUGIN_TYPES; ++i)
725 pplugin_unregister (i, plugin);
727 else if (PLUGIN_LOG != type) {
728 log_warn ("%s->%s() failed with status %i.",
729 plugin, plugin_types[type], status);
735 } /* static int pplugin_call_all (int, ...) */
743 * Collectd::plugin_register (type, name, data).
746 * init, read, write, shutdown, data set
752 * reference to the plugin's subroutine that does the work or the data set
755 static XS (Collectd_plugin_register)
765 log_err ("Usage: Collectd::plugin_register(type, name, data)");
769 log_debug ("Collectd::plugin_register: "
770 "type = \"%i\", name = \"%s\", \"%s\"",
771 (int)SvIV (ST (0)), SvPV_nolen (ST (1)), SvPV_nolen (ST (2)));
773 type = (int)SvIV (ST (0));
776 if ((type >= 0) && (type < PLUGIN_TYPES)
777 && SvROK (data) && (SVt_PVCV == SvTYPE (SvRV (data)))) {
778 ret = pplugin_register (type, SvPV_nolen (ST (1)), data);
780 else if ((type == PLUGIN_DATASET)
781 && SvROK (data) && (SVt_PVAV == SvTYPE (SvRV (data)))) {
782 ret = pplugin_register_data_set (SvPV_nolen (ST (1)),
786 log_err ("Collectd::plugin_register: Invalid data.");
794 } /* static XS (Collectd_plugin_register) */
797 * Collectd::plugin_unregister (type, name).
800 * init, read, write, shutdown, data set
805 static XS (Collectd_plugin_unregister)
813 log_err ("Usage: Collectd::plugin_unregister(type, name)");
817 log_debug ("Collectd::plugin_unregister: type = \"%i\", name = \"%s\"",
818 (int)SvIV (ST (0)), SvPV_nolen (ST (1)));
820 type = (int)SvIV (ST (0));
822 if ((type >= 0) && (type < PLUGIN_TYPES)) {
823 ret = pplugin_unregister (type, SvPV_nolen (ST (1)));
825 else if (type == PLUGIN_DATASET) {
826 ret = pplugin_unregister_data_set (SvPV_nolen (ST (1)));
829 log_err ("Collectd::plugin_unregister: Invalid type.");
837 } /* static XS (Collectd_plugin_unregister) */
840 * Collectd::plugin_dispatch_values (name, values).
846 * value list to submit
848 static XS (Collectd_plugin_dispatch_values)
857 log_err ("Usage: Collectd::plugin_dispatch_values(name, values)");
861 log_debug ("Collectd::plugin_dispatch_values: "
862 "name = \"%s\", values=\"%s\"",
863 SvPV_nolen (ST (0)), SvPV_nolen (ST (1)));
867 if (! (SvROK (values) && (SVt_PVHV == SvTYPE (SvRV (values))))) {
868 log_err ("Collectd::plugin_dispatch_values: Invalid values.");
872 if ((NULL == ST (0)) || (NULL == values))
875 ret = pplugin_dispatch_values (SvPV_nolen (ST (0)), (HV *)SvRV (values));
881 } /* static XS (Collectd_plugin_dispatch_values) */
884 * Collectd::plugin_log (level, message).
887 * log level (LOG_DEBUG, ... LOG_ERR)
892 static XS (Collectd_plugin_log)
897 log_err ("Usage: Collectd::plugin_log(level, message)");
901 log_debug ("Collectd::plugin_log: level = %i, message = \"%s\"",
902 SvIV (ST (0)), SvPV_nolen (ST (1)));
903 plugin_log (SvIV (ST (0)), SvPV_nolen (ST (1)));
905 } /* static XS (Collectd_plugin_log) */
908 * Collectd::bootstrap ().
910 static XS (boot_Collectd)
913 char *file = __FILE__;
920 { "Collectd::TYPE_INIT", Perl_newSViv (perl, PLUGIN_INIT) },
921 { "Collectd::TYPE_READ", Perl_newSViv (perl, PLUGIN_READ) },
922 { "Collectd::TYPE_WRITE", Perl_newSViv (perl, PLUGIN_WRITE) },
923 { "Collectd::TYPE_SHUTDOWN", Perl_newSViv (perl, PLUGIN_SHUTDOWN) },
924 { "Collectd::TYPE_LOG", Perl_newSViv (perl, PLUGIN_LOG) },
925 { "Collectd::TYPE_DATASET", Perl_newSViv (perl, PLUGIN_DATASET) },
926 { "Collectd::DS_TYPE_COUNTER", Perl_newSViv (perl, DS_TYPE_COUNTER) },
927 { "Collectd::DS_TYPE_GAUGE", Perl_newSViv (perl, DS_TYPE_GAUGE) },
928 { "Collectd::LOG_ERR", Perl_newSViv (perl, LOG_ERR) },
929 { "Collectd::LOG_WARNING", Perl_newSViv (perl, LOG_WARNING) },
930 { "Collectd::LOG_NOTICE", Perl_newSViv (perl, LOG_NOTICE) },
931 { "Collectd::LOG_INFO", Perl_newSViv (perl, LOG_INFO) },
932 { "Collectd::LOG_DEBUG", Perl_newSViv (perl, LOG_DEBUG) },
940 if ((1 > items) || (2 < items)) {
941 log_err ("Usage: Collectd::bootstrap(name[, version])");
945 XS_VERSION_BOOTCHECK;
948 for (i = 0; NULL != api[i].f; ++i)
949 Perl_newXS (perl, api[i].name, api[i].f, file);
951 stash = Perl_gv_stashpv (perl, "Collectd", 1);
953 /* export "constants" */
954 for (i = 0; NULL != consts[i].value; ++i)
955 Perl_newCONSTSUB (perl, stash, consts[i].name, consts[i].value);
957 } /* static XS (boot_Collectd) */
961 * Interface to collectd.
964 static int perl_init (void)
969 PERL_SET_CONTEXT (perl);
970 return pplugin_call_all (PLUGIN_INIT);
971 } /* static int perl_init (void) */
973 static int perl_read (void)
978 PERL_SET_CONTEXT (perl);
979 return pplugin_call_all (PLUGIN_READ);
980 } /* static int perl_read (void) */
982 static int perl_write (const data_set_t *ds, const value_list_t *vl)
987 PERL_SET_CONTEXT (perl);
988 return pplugin_call_all (PLUGIN_WRITE, ds, vl);
989 } /* static int perl_write (const data_set_t *, const value_list_t *) */
991 static void perl_log (int level, const char *msg)
996 PERL_SET_CONTEXT (perl);
997 pplugin_call_all (PLUGIN_LOG, level, msg);
999 } /* static void perl_log (int, const char *) */
1001 static int perl_shutdown (void)
1006 plugin_unregister_log ("perl");
1007 plugin_unregister_config ("perl");
1008 plugin_unregister_init ("perl");
1009 plugin_unregister_read ("perl");
1010 plugin_unregister_write ("perl");
1015 PERL_SET_CONTEXT (perl);
1016 ret = pplugin_call_all (PLUGIN_SHUTDOWN);
1018 for (i = 0; i < PLUGIN_TYPES; ++i) {
1019 if (0 < Perl_hv_iterinit (perl, plugins[i])) {
1023 while (NULL != Perl_hv_iternextsv (perl, plugins[i], &k, &l)) {
1024 pplugin_unregister (i, k);
1028 Perl_hv_undef (perl, plugins[i]);
1031 if (0 < Perl_hv_iterinit (perl, data_sets)) {
1035 while (NULL != Perl_hv_iternextsv (perl, data_sets, &k, &l)) {
1036 pplugin_unregister_data_set (k);
1040 Perl_hv_undef (perl, data_sets);
1043 Perl_sv_report_used (perl);
1044 #endif /* COLLECT_DEBUG */
1046 perl_destruct (perl);
1052 plugin_unregister_shutdown ("perl");
1054 } /* static void perl_shutdown (void) */
1056 static void xs_init (pTHX)
1058 char *file = __FILE__;
1062 /* build the Collectd module into the perl interpreter */
1063 Perl_newXS (perl, "Collectd::bootstrap", boot_Collectd, file);
1065 /* enable usage of Perl modules using shared libraries */
1066 Perl_newXS (perl, "DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
1068 } /* static void xs_init (pTHX) */
1070 /* Initialize the global Perl interpreter. */
1071 static int init_pi (int argc, char **argv)
1078 log_info ("Initializing Perl interpreter...");
1080 for (i = 0; i < argc; ++i)
1081 log_debug ("argv[%i] = \"%s\"", i, argv[i]);
1082 #endif /* COLLECT_DEBUG */
1084 PERL_SYS_INIT3 (&argc, &argv, &environ);
1086 if (NULL == (perl = perl_alloc ())) {
1087 log_err ("module_register: Not enough memory.");
1090 perl_construct (perl);
1092 PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
1094 if (0 != perl_parse (perl, xs_init, argc, argv, NULL)) {
1095 log_err ("module_register: Unable to bootstrap Collectd.");
1100 for (i = 0; i < PLUGIN_TYPES; ++i)
1101 plugins[i] = Perl_newHV (perl);
1103 data_sets = Perl_newHV (perl);
1105 plugin_register_log ("perl", perl_log);
1106 plugin_register_init ("perl", perl_init);
1108 plugin_register_read ("perl", perl_read);
1110 plugin_register_write ("perl", perl_write);
1111 plugin_register_shutdown ("perl", perl_shutdown);
1113 } /* static int init_pi (const char **, const int) */
1115 static int perl_config (const char *key, const char *value)
1117 log_debug ("perl_config: key = \"%s\", value=\"%s\"", key, value);
1119 if (0 == strcasecmp (key, "LoadPlugin")) {
1120 char module_name[DATA_MAX_NAME_LEN];
1122 if (get_module_name (module_name, sizeof (module_name), value)
1124 log_err ("Invalid module name %s", value);
1126 } /* if (get_module_name == NULL) */
1128 init_pi (perl_argc, perl_argv);
1130 log_info ("perl_config: loading perl plugin \"%s\"", value);
1131 Perl_load_module (perl, PERL_LOADMOD_NOIMPORT,
1132 Perl_newSVpv (perl, module_name, strlen (module_name)),
1135 else if (0 == strcasecmp (key, "BaseName")) {
1136 log_debug ("perl_config: Setting plugin basename to \"%s\"", value);
1137 strncpy (base_name, value, sizeof (base_name));
1138 base_name[sizeof (base_name) - 1] = '\0';
1140 else if (0 == strcasecmp (key, "IncludeDir")) {
1141 perl_argv = (char **)realloc (perl_argv,
1142 (++perl_argc + 1) * sizeof (char *));
1144 if (NULL == perl_argv) {
1145 log_err ("perl_config: Not enough memory.");
1149 perl_argv[perl_argc - 1] = (char *)smalloc (strlen (value) + 3);
1150 sstrncpy(perl_argv[perl_argc - 1], "-I", 3);
1151 sstrncpy(perl_argv[perl_argc - 1] + 2, value, strlen (value) + 1);
1153 perl_argv[perl_argc] = NULL;
1159 } /* static int perl_config (char *, char *) */
1161 void module_register (void)
1164 perl_argv = (char **)smalloc ((perl_argc + 1) * sizeof (char *));
1166 /* default options for the Perl interpreter */
1168 perl_argv[1] = "-MCollectd";
1169 perl_argv[2] = "-e";
1171 perl_argv[4] = NULL;
1173 plugin_register_config ("perl", perl_config, config_keys, config_keys_num);
1175 } /* void module_register (void) */
1177 /* vim: set sw=4 ts=4 tw=78 noexpandtab : */