forked from collectd/collectd
/
perl.c
2546 lines (2008 loc) · 58.1 KB
/
perl.c
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/**
* collectd - src/perl.c
* Copyright (C) 2007-2009 Sebastian Harl
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; only version 2 of the License is applicable.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author:
* Sebastian Harl <sh at tokkee.org>
**/
/*
* This plugin embeds a Perl interpreter into collectd and provides an
* interface for collectd plugins written in perl.
*/
/* do not automatically get the thread specific perl interpreter */
#define PERL_NO_GET_CONTEXT
#define DONT_POISON_SPRINTF_YET 1
#include "collectd.h"
#undef DONT_POISON_SPRINTF_YET
#include "configfile.h"
#if HAVE_STDBOOL_H
# include <stdbool.h>
#endif
#include <EXTERN.h>
#include <perl.h>
#if defined(COLLECT_DEBUG) && COLLECT_DEBUG && defined(__GNUC__) && __GNUC__
# pragma GCC poison sprintf
#endif
#include <XSUB.h>
/* Some versions of Perl define their own version of DEBUG... :-/ */
#ifdef DEBUG
# undef DEBUG
#endif /* DEBUG */
/* ... while we want the definition found in plugin.h. */
#include "plugin.h"
#include "common.h"
#include "filter_chain.h"
#include <pthread.h>
#if !defined(USE_ITHREADS)
# error "Perl does not support ithreads!"
#endif /* !defined(USE_ITHREADS) */
/* clear the Perl sub's stack frame
* (this should only be used inside an XSUB) */
#define CLEAR_STACK_FRAME PL_stack_sp = PL_stack_base + *PL_markstack_ptr
#define PLUGIN_INIT 0
#define PLUGIN_READ 1
#define PLUGIN_WRITE 2
#define PLUGIN_SHUTDOWN 3
#define PLUGIN_LOG 4
#define PLUGIN_NOTIF 5
#define PLUGIN_FLUSH 6
#define PLUGIN_TYPES 7
#define PLUGIN_CONFIG 254
#define PLUGIN_DATASET 255
#define FC_MATCH 0
#define FC_TARGET 1
#define FC_TYPES 2
#define FC_CB_CREATE 0
#define FC_CB_DESTROY 1
#define FC_CB_EXEC 2
#define FC_CB_TYPES 3
#define log_debug(...) DEBUG ("perl: " __VA_ARGS__)
#define log_info(...) INFO ("perl: " __VA_ARGS__)
#define log_warn(...) WARNING ("perl: " __VA_ARGS__)
#define log_err(...) ERROR ("perl: " __VA_ARGS__)
/* this is defined in DynaLoader.a */
void boot_DynaLoader (PerlInterpreter *, CV *);
static XS (Collectd_plugin_register_ds);
static XS (Collectd_plugin_unregister_ds);
static XS (Collectd_plugin_dispatch_values);
static XS (Collectd__plugin_write);
static XS (Collectd__plugin_flush);
static XS (Collectd_plugin_dispatch_notification);
static XS (Collectd_plugin_log);
static XS (Collectd__fc_register);
static XS (Collectd_call_by_name);
/*
* private data types
*/
typedef struct c_ithread_s {
/* the thread's Perl interpreter */
PerlInterpreter *interp;
/* double linked list of threads */
struct c_ithread_s *prev;
struct c_ithread_s *next;
} c_ithread_t;
typedef struct {
c_ithread_t *head;
c_ithread_t *tail;
#if COLLECT_DEBUG
/* some usage stats */
int number_of_threads;
#endif /* COLLECT_DEBUG */
pthread_mutex_t mutex;
} c_ithread_list_t;
/* name / user_data for Perl matches / targets */
typedef struct {
char *name;
SV *user_data;
} pfc_user_data_t;
#define PFC_USER_DATA_FREE(data) \
do { \
sfree ((data)->name); \
if (NULL != (data)->user_data) \
sv_free ((data)->user_data); \
sfree (data); \
} while (0)
/*
* Public variable
*/
extern char **environ;
/*
* private variables
*/
/* if perl_threads != NULL perl_threads->head must
* point to the "base" thread */
static c_ithread_list_t *perl_threads = NULL;
/* the key used to store each pthread's ithread */
static pthread_key_t perl_thr_key;
static int perl_argc = 0;
static char **perl_argv = NULL;
static char base_name[DATA_MAX_NAME_LEN] = "";
static struct {
char name[64];
XS ((*f));
} api[] =
{
{ "Collectd::plugin_register_data_set", Collectd_plugin_register_ds },
{ "Collectd::plugin_unregister_data_set", Collectd_plugin_unregister_ds },
{ "Collectd::plugin_dispatch_values", Collectd_plugin_dispatch_values },
{ "Collectd::_plugin_write", Collectd__plugin_write },
{ "Collectd::_plugin_flush", Collectd__plugin_flush },
{ "Collectd::plugin_dispatch_notification",
Collectd_plugin_dispatch_notification },
{ "Collectd::plugin_log", Collectd_plugin_log },
{ "Collectd::_fc_register", Collectd__fc_register },
{ "Collectd::call_by_name", Collectd_call_by_name },
{ "", NULL }
};
struct {
char name[64];
int value;
} constants[] =
{
{ "Collectd::TYPE_INIT", PLUGIN_INIT },
{ "Collectd::TYPE_READ", PLUGIN_READ },
{ "Collectd::TYPE_WRITE", PLUGIN_WRITE },
{ "Collectd::TYPE_SHUTDOWN", PLUGIN_SHUTDOWN },
{ "Collectd::TYPE_LOG", PLUGIN_LOG },
{ "Collectd::TYPE_NOTIF", PLUGIN_NOTIF },
{ "Collectd::TYPE_FLUSH", PLUGIN_FLUSH },
{ "Collectd::TYPE_CONFIG", PLUGIN_CONFIG },
{ "Collectd::TYPE_DATASET", PLUGIN_DATASET },
{ "Collectd::DS_TYPE_COUNTER", DS_TYPE_COUNTER },
{ "Collectd::DS_TYPE_GAUGE", DS_TYPE_GAUGE },
{ "Collectd::DS_TYPE_DERIVE", DS_TYPE_DERIVE },
{ "Collectd::DS_TYPE_ABSOLUTE", DS_TYPE_ABSOLUTE },
{ "Collectd::LOG_ERR", LOG_ERR },
{ "Collectd::LOG_WARNING", LOG_WARNING },
{ "Collectd::LOG_NOTICE", LOG_NOTICE },
{ "Collectd::LOG_INFO", LOG_INFO },
{ "Collectd::LOG_DEBUG", LOG_DEBUG },
{ "Collectd::FC_MATCH", FC_MATCH },
{ "Collectd::FC_TARGET", FC_TARGET },
{ "Collectd::FC_CB_CREATE", FC_CB_CREATE },
{ "Collectd::FC_CB_DESTROY", FC_CB_DESTROY },
{ "Collectd::FC_CB_EXEC", FC_CB_EXEC },
{ "Collectd::FC_MATCH_NO_MATCH", FC_MATCH_NO_MATCH },
{ "Collectd::FC_MATCH_MATCHES", FC_MATCH_MATCHES },
{ "Collectd::FC_TARGET_CONTINUE", FC_TARGET_CONTINUE },
{ "Collectd::FC_TARGET_STOP", FC_TARGET_STOP },
{ "Collectd::FC_TARGET_RETURN", FC_TARGET_RETURN },
{ "Collectd::NOTIF_FAILURE", NOTIF_FAILURE },
{ "Collectd::NOTIF_WARNING", NOTIF_WARNING },
{ "Collectd::NOTIF_OKAY", NOTIF_OKAY },
{ "", 0 }
};
struct {
char name[64];
char *var;
} g_strings[] =
{
{ "Collectd::hostname_g", hostname_g },
{ "", NULL }
};
/*
* Helper functions for data type conversion.
*/
/*
* data source:
* [
* {
* name => $ds_name,
* type => $ds_type,
* min => $ds_min,
* max => $ds_max
* },
* ...
* ]
*/
static int hv2data_source (pTHX_ HV *hash, data_source_t *ds)
{
SV **tmp = NULL;
if ((NULL == hash) || (NULL == ds))
return -1;
if (NULL != (tmp = hv_fetch (hash, "name", 4, 0))) {
sstrncpy (ds->name, SvPV_nolen (*tmp), sizeof (ds->name));
}
else {
log_err ("hv2data_source: No DS name given.");
return -1;
}
if (NULL != (tmp = hv_fetch (hash, "type", 4, 0))) {
ds->type = SvIV (*tmp);
if ((DS_TYPE_COUNTER != ds->type)
&& (DS_TYPE_GAUGE != ds->type)
&& (DS_TYPE_DERIVE != ds->type)
&& (DS_TYPE_ABSOLUTE != ds->type)) {
log_err ("hv2data_source: Invalid DS type.");
return -1;
}
}
else {
ds->type = DS_TYPE_COUNTER;
}
if (NULL != (tmp = hv_fetch (hash, "min", 3, 0)))
ds->min = SvNV (*tmp);
else
ds->min = NAN;
if (NULL != (tmp = hv_fetch (hash, "max", 3, 0)))
ds->max = SvNV (*tmp);
else
ds->max = NAN;
return 0;
} /* static int hv2data_source (HV *, data_source_t *) */
static int av2value (pTHX_ char *name, AV *array, value_t *value, int len)
{
const data_set_t *ds;
int i = 0;
if ((NULL == name) || (NULL == array) || (NULL == value))
return -1;
if (av_len (array) < len - 1)
len = av_len (array) + 1;
if (0 >= len)
return -1;
ds = plugin_get_ds (name);
if (NULL == ds) {
log_err ("av2value: Unknown dataset \"%s\"", name);
return -1;
}
if (ds->ds_num < len) {
log_warn ("av2value: Value length exceeds data set length.");
len = ds->ds_num;
}
for (i = 0; i < len; ++i) {
SV **tmp = av_fetch (array, i, 0);
if (NULL != tmp) {
if (DS_TYPE_COUNTER == ds->ds[i].type)
value[i].counter = SvIV (*tmp);
else if (DS_TYPE_GAUGE == ds->ds[i].type)
value[i].gauge = SvNV (*tmp);
else if (DS_TYPE_DERIVE == ds->ds[i].type)
value[i].derive = SvIV (*tmp);
else if (DS_TYPE_ABSOLUTE == ds->ds[i].type)
value[i].absolute = SvIV (*tmp);
}
else {
return -1;
}
}
return len;
} /* static int av2value (char *, AV *, value_t *, int) */
/*
* value list:
* {
* values => [ @values ],
* time => $time,
* host => $host,
* plugin => $plugin,
* plugin_instance => $pinstance,
* type_instance => $tinstance,
* }
*/
static int hv2value_list (pTHX_ HV *hash, value_list_t *vl)
{
SV **tmp;
if ((NULL == hash) || (NULL == vl))
return -1;
if (NULL == (tmp = hv_fetch (hash, "type", 4, 0))) {
log_err ("hv2value_list: No type given.");
return -1;
}
sstrncpy (vl->type, SvPV_nolen (*tmp), sizeof (vl->type));
if ((NULL == (tmp = hv_fetch (hash, "values", 6, 0)))
|| (! (SvROK (*tmp) && (SVt_PVAV == SvTYPE (SvRV (*tmp)))))) {
log_err ("hv2value_list: No valid values given.");
return -1;
}
{
AV *array = (AV *)SvRV (*tmp);
int len = av_len (array) + 1;
if (len <= 0)
return -1;
vl->values = (value_t *)smalloc (len * sizeof (value_t));
vl->values_len = av2value (aTHX_ vl->type, (AV *)SvRV (*tmp),
vl->values, len);
if (-1 == vl->values_len) {
sfree (vl->values);
return -1;
}
}
if (NULL != (tmp = hv_fetch (hash, "time", 4, 0)))
{
double t = SvNV (*tmp);
vl->time = DOUBLE_TO_CDTIME_T (t);
}
if (NULL != (tmp = hv_fetch (hash, "interval", 8, 0)))
{
double t = SvNV (*tmp);
vl->interval = DOUBLE_TO_CDTIME_T (t);
}
if (NULL != (tmp = hv_fetch (hash, "host", 4, 0)))
sstrncpy (vl->host, SvPV_nolen (*tmp), sizeof (vl->host));
else
sstrncpy (vl->host, hostname_g, sizeof (vl->host));
if (NULL != (tmp = hv_fetch (hash, "plugin", 6, 0)))
sstrncpy (vl->plugin, SvPV_nolen (*tmp), sizeof (vl->plugin));
if (NULL != (tmp = hv_fetch (hash, "plugin_instance", 15, 0)))
sstrncpy (vl->plugin_instance, SvPV_nolen (*tmp),
sizeof (vl->plugin_instance));
if (NULL != (tmp = hv_fetch (hash, "type_instance", 13, 0)))
sstrncpy (vl->type_instance, SvPV_nolen (*tmp),
sizeof (vl->type_instance));
return 0;
} /* static int hv2value_list (pTHX_ HV *, value_list_t *) */
static int av2data_set (pTHX_ AV *array, char *name, data_set_t *ds)
{
int len, i;
if ((NULL == array) || (NULL == name) || (NULL == ds))
return -1;
len = av_len (array);
if (-1 == len) {
log_err ("av2data_set: Invalid data set.");
return -1;
}
ds->ds = (data_source_t *)smalloc ((len + 1) * sizeof (data_source_t));
ds->ds_num = len + 1;
for (i = 0; i <= len; ++i) {
SV **elem = av_fetch (array, i, 0);
if (NULL == elem) {
log_err ("av2data_set: Failed to fetch data source %i.", i);
return -1;
}
if (! (SvROK (*elem) && (SVt_PVHV == SvTYPE (SvRV (*elem))))) {
log_err ("av2data_set: Invalid data source.");
return -1;
}
if (-1 == hv2data_source (aTHX_ (HV *)SvRV (*elem), &ds->ds[i]))
return -1;
log_debug ("av2data_set: "
"DS.name = \"%s\", DS.type = %i, DS.min = %f, DS.max = %f",
ds->ds[i].name, ds->ds[i].type, ds->ds[i].min, ds->ds[i].max);
}
sstrncpy (ds->type, name, sizeof (ds->type));
return 0;
} /* static int av2data_set (pTHX_ AV *, data_set_t *) */
/*
* notification:
* {
* severity => $severity,
* time => $time,
* message => $msg,
* host => $host,
* plugin => $plugin,
* type => $type,
* plugin_instance => $instance,
* type_instance => $type_instance,
* meta => [ { name => <name>, value => <value> }, ... ]
* }
*/
static int av2notification_meta (pTHX_ AV *array, notification_meta_t **meta)
{
notification_meta_t **m = meta;
int len = av_len (array);
int i;
for (i = 0; i <= len; ++i) {
SV **tmp = av_fetch (array, i, 0);
HV *hash;
if (NULL == tmp)
return -1;
if (! (SvROK (*tmp) && (SVt_PVHV == SvTYPE (SvRV (*tmp))))) {
log_warn ("av2notification_meta: Skipping invalid "
"meta information.");
continue;
}
hash = (HV *)SvRV (*tmp);
*m = (notification_meta_t *)smalloc (sizeof (**m));
if (NULL == (tmp = hv_fetch (hash, "name", 4, 0))) {
log_warn ("av2notification_meta: Skipping invalid "
"meta information.");
free (*m);
continue;
}
sstrncpy ((*m)->name, SvPV_nolen (*tmp), sizeof ((*m)->name));
if (NULL == (tmp = hv_fetch (hash, "value", 5, 0))) {
log_warn ("av2notification_meta: Skipping invalid "
"meta information.");
free ((*m)->name);
free (*m);
continue;
}
if (SvNOK (*tmp)) {
(*m)->nm_value.nm_double = SvNVX (*tmp);
(*m)->type = NM_TYPE_DOUBLE;
}
else if (SvUOK (*tmp)) {
(*m)->nm_value.nm_unsigned_int = SvUVX (*tmp);
(*m)->type = NM_TYPE_UNSIGNED_INT;
}
else if (SvIOK (*tmp)) {
(*m)->nm_value.nm_signed_int = SvIVX (*tmp);
(*m)->type = NM_TYPE_SIGNED_INT;
}
else {
(*m)->nm_value.nm_string = sstrdup (SvPV_nolen (*tmp));
(*m)->type = NM_TYPE_STRING;
}
(*m)->next = NULL;
m = &((*m)->next);
}
return 0;
} /* static int av2notification_meta (AV *, notification_meta_t *) */
static int hv2notification (pTHX_ HV *hash, notification_t *n)
{
SV **tmp = NULL;
if ((NULL == hash) || (NULL == n))
return -1;
if (NULL != (tmp = hv_fetch (hash, "severity", 8, 0)))
n->severity = SvIV (*tmp);
else
n->severity = NOTIF_FAILURE;
if (NULL != (tmp = hv_fetch (hash, "time", 4, 0)))
{
double t = SvNV (*tmp);
n->time = DOUBLE_TO_CDTIME_T (t);
}
else
n->time = cdtime ();
if (NULL != (tmp = hv_fetch (hash, "message", 7, 0)))
sstrncpy (n->message, SvPV_nolen (*tmp), sizeof (n->message));
if (NULL != (tmp = hv_fetch (hash, "host", 4, 0)))
sstrncpy (n->host, SvPV_nolen (*tmp), sizeof (n->host));
else
sstrncpy (n->host, hostname_g, sizeof (n->host));
if (NULL != (tmp = hv_fetch (hash, "plugin", 6, 0)))
sstrncpy (n->plugin, SvPV_nolen (*tmp), sizeof (n->plugin));
if (NULL != (tmp = hv_fetch (hash, "plugin_instance", 15, 0)))
sstrncpy (n->plugin_instance, SvPV_nolen (*tmp),
sizeof (n->plugin_instance));
if (NULL != (tmp = hv_fetch (hash, "type", 4, 0)))
sstrncpy (n->type, SvPV_nolen (*tmp), sizeof (n->type));
if (NULL != (tmp = hv_fetch (hash, "type_instance", 13, 0)))
sstrncpy (n->type_instance, SvPV_nolen (*tmp),
sizeof (n->type_instance));
n->meta = NULL;
while (NULL != (tmp = hv_fetch (hash, "meta", 4, 0))) {
if (! (SvROK (*tmp) && (SVt_PVAV == SvTYPE (SvRV (*tmp))))) {
log_warn ("hv2notification: Ignoring invalid meta information.");
break;
}
if (0 != av2notification_meta (aTHX_ (AV *)SvRV (*tmp), &n->meta)) {
plugin_notification_meta_free (n->meta);
n->meta = NULL;
return -1;
}
break;
}
return 0;
} /* static int hv2notification (pTHX_ HV *, notification_t *) */
static int data_set2av (pTHX_ data_set_t *ds, AV *array)
{
int i = 0;
if ((NULL == ds) || (NULL == array))
return -1;
av_extend (array, ds->ds_num);
for (i = 0; i < ds->ds_num; ++i) {
HV *source = newHV ();
if (NULL == hv_store (source, "name", 4,
newSVpv (ds->ds[i].name, 0), 0))
return -1;
if (NULL == hv_store (source, "type", 4, newSViv (ds->ds[i].type), 0))
return -1;
if (! isnan (ds->ds[i].min))
if (NULL == hv_store (source, "min", 3,
newSVnv (ds->ds[i].min), 0))
return -1;
if (! isnan (ds->ds[i].max))
if (NULL == hv_store (source, "max", 3,
newSVnv (ds->ds[i].max), 0))
return -1;
if (NULL == av_store (array, i, newRV_noinc ((SV *)source)))
return -1;
}
return 0;
} /* static int data_set2av (data_set_t *, AV *) */
static int value_list2hv (pTHX_ value_list_t *vl, data_set_t *ds, HV *hash)
{
AV *values = NULL;
int i = 0;
int len = 0;
if ((NULL == vl) || (NULL == ds) || (NULL == hash))
return -1;
len = vl->values_len;
if (ds->ds_num < len) {
log_warn ("value2av: Value length exceeds data set length.");
len = ds->ds_num;
}
values = newAV ();
av_extend (values, len - 1);
for (i = 0; i < len; ++i) {
SV *val = NULL;
if (DS_TYPE_COUNTER == ds->ds[i].type)
val = newSViv (vl->values[i].counter);
else if (DS_TYPE_GAUGE == ds->ds[i].type)
val = newSVnv (vl->values[i].gauge);
else if (DS_TYPE_DERIVE == ds->ds[i].type)
val = newSViv (vl->values[i].derive);
else if (DS_TYPE_ABSOLUTE == ds->ds[i].type)
val = newSViv (vl->values[i].absolute);
if (NULL == av_store (values, i, val)) {
av_undef (values);
return -1;
}
}
if (NULL == hv_store (hash, "values", 6, newRV_noinc ((SV *)values), 0))
return -1;
if (0 != vl->time)
{
double t = CDTIME_T_TO_DOUBLE (vl->time);
if (NULL == hv_store (hash, "time", 4, newSVnv (t), 0))
return -1;
}
{
double t = CDTIME_T_TO_DOUBLE (vl->interval);
if (NULL == hv_store (hash, "interval", 8, newSVnv (t), 0))
return -1;
}
if ('\0' != vl->host[0])
if (NULL == hv_store (hash, "host", 4, newSVpv (vl->host, 0), 0))
return -1;
if ('\0' != vl->plugin[0])
if (NULL == hv_store (hash, "plugin", 6, newSVpv (vl->plugin, 0), 0))
return -1;
if ('\0' != vl->plugin_instance[0])
if (NULL == hv_store (hash, "plugin_instance", 15,
newSVpv (vl->plugin_instance, 0), 0))
return -1;
if ('\0' != vl->type[0])
if (NULL == hv_store (hash, "type", 4, newSVpv (vl->type, 0), 0))
return -1;
if ('\0' != vl->type_instance[0])
if (NULL == hv_store (hash, "type_instance", 13,
newSVpv (vl->type_instance, 0), 0))
return -1;
return 0;
} /* static int value2av (value_list_t *, data_set_t *, HV *) */
static int notification_meta2av (pTHX_ notification_meta_t *meta, AV *array)
{
int meta_num = 0;
int i;
while (meta) {
++meta_num;
meta = meta->next;
}
av_extend (array, meta_num);
for (i = 0; NULL != meta; meta = meta->next, ++i) {
HV *m = newHV ();
SV *value;
if (NULL == hv_store (m, "name", 4, newSVpv (meta->name, 0), 0))
return -1;
if (NM_TYPE_STRING == meta->type)
value = newSVpv (meta->nm_value.nm_string, 0);
else if (NM_TYPE_SIGNED_INT == meta->type)
value = newSViv (meta->nm_value.nm_signed_int);
else if (NM_TYPE_UNSIGNED_INT == meta->type)
value = newSVuv (meta->nm_value.nm_unsigned_int);
else if (NM_TYPE_DOUBLE == meta->type)
value = newSVnv (meta->nm_value.nm_double);
else if (NM_TYPE_BOOLEAN == meta->type)
value = meta->nm_value.nm_boolean ? &PL_sv_yes : &PL_sv_no;
else
return -1;
if (NULL == hv_store (m, "value", 5, value, 0)) {
sv_free (value);
return -1;
}
if (NULL == av_store (array, i, newRV_noinc ((SV *)m))) {
hv_clear (m);
hv_undef (m);
return -1;
}
}
return 0;
} /* static int notification_meta2av (notification_meta_t *, AV *) */
static int notification2hv (pTHX_ notification_t *n, HV *hash)
{
if (NULL == hv_store (hash, "severity", 8, newSViv (n->severity), 0))
return -1;
if (0 != n->time)
{
double t = CDTIME_T_TO_DOUBLE (n->time);
if (NULL == hv_store (hash, "time", 4, newSVnv (t), 0))
return -1;
}
if ('\0' != *n->message)
if (NULL == hv_store (hash, "message", 7, newSVpv (n->message, 0), 0))
return -1;
if ('\0' != *n->host)
if (NULL == hv_store (hash, "host", 4, newSVpv (n->host, 0), 0))
return -1;
if ('\0' != *n->plugin)
if (NULL == hv_store (hash, "plugin", 6, newSVpv (n->plugin, 0), 0))
return -1;
if ('\0' != *n->plugin_instance)
if (NULL == hv_store (hash, "plugin_instance", 15,
newSVpv (n->plugin_instance, 0), 0))
return -1;
if ('\0' != *n->type)
if (NULL == hv_store (hash, "type", 4, newSVpv (n->type, 0), 0))
return -1;
if ('\0' != *n->type_instance)
if (NULL == hv_store (hash, "type_instance", 13,
newSVpv (n->type_instance, 0), 0))
return -1;
if (NULL != n->meta) {
AV *meta = newAV ();
if ((0 != notification_meta2av (aTHX_ n->meta, meta))
|| (NULL == hv_store (hash, "meta", 4,
newRV_noinc ((SV *)meta), 0))) {
av_clear (meta);
av_undef (meta);
return -1;
}
}
return 0;
} /* static int notification2hv (notification_t *, HV *) */
static int oconfig_item2hv (pTHX_ oconfig_item_t *ci, HV *hash)
{
int i;
AV *values;
AV *children;
if (NULL == hv_store (hash, "key", 3, newSVpv (ci->key, 0), 0))
return -1;
values = newAV ();
if (0 < ci->values_num)
av_extend (values, ci->values_num);
if (NULL == hv_store (hash, "values", 6, newRV_noinc ((SV *)values), 0)) {
av_clear (values);
av_undef (values);
return -1;
}
for (i = 0; i < ci->values_num; ++i) {
SV *value;
switch (ci->values[i].type) {
case OCONFIG_TYPE_STRING:
value = newSVpv (ci->values[i].value.string, 0);
break;
case OCONFIG_TYPE_NUMBER:
value = newSVnv ((NV)ci->values[i].value.number);
break;
case OCONFIG_TYPE_BOOLEAN:
value = ci->values[i].value.boolean ? &PL_sv_yes : &PL_sv_no;
break;
default:
log_err ("oconfig_item2hv: Invalid value type %i.",
ci->values[i].type);
value = &PL_sv_undef;
}
if (NULL == av_store (values, i, value)) {
sv_free (value);
return -1;
}
}
/* ignoring 'parent' member which is uninteresting in this case */
children = newAV ();
if (0 < ci->children_num)
av_extend (children, ci->children_num);
if (NULL == hv_store (hash, "children", 8, newRV_noinc ((SV *)children), 0)) {
av_clear (children);
av_undef (children);
return -1;
}
for (i = 0; i < ci->children_num; ++i) {
HV *child = newHV ();
if (0 != oconfig_item2hv (aTHX_ ci->children + i, child)) {
hv_clear (child);
hv_undef (child);
return -1;
}
if (NULL == av_store (children, i, newRV_noinc ((SV *)child))) {
hv_clear (child);
hv_undef (child);
return -1;
}
}
return 0;
} /* static int oconfig_item2hv (pTHX_ oconfig_item_t *, HV *) */
/*
* Internal functions.
*/
static char *get_module_name (char *buf, size_t buf_len, const char *module) {
int status = 0;
if (base_name[0] == '\0')
status = ssnprintf (buf, buf_len, "%s", module);
else
status = ssnprintf (buf, buf_len, "%s::%s", base_name, module);
if ((status < 0) || ((unsigned int)status >= buf_len))
return (NULL);
return (buf);
} /* char *get_module_name */
/*
* Add a plugin's data set definition.
*/
static int pplugin_register_data_set (pTHX_ char *name, AV *dataset)
{
int ret = 0;
data_set_t ds;
if ((NULL == name) || (NULL == dataset))
return -1;
if (0 != av2data_set (aTHX_ dataset, name, &ds))
return -1;
ret = plugin_register_data_set (&ds);
free (ds.ds);
return ret;
} /* static int pplugin_register_data_set (char *, SV *) */
/*
* Remove a plugin's data set definition.
*/
static int pplugin_unregister_data_set (char *name)
{
if (NULL == name)
return 0;
return plugin_unregister_data_set (name);
} /* static int pplugin_unregister_data_set (char *) */
/*
* Submit the values to the write functions.
*/
static int pplugin_dispatch_values (pTHX_ HV *values)
{
value_list_t vl = VALUE_LIST_INIT;
int ret = 0;
if (NULL == values)
return -1;
if (0 != hv2value_list (aTHX_ values, &vl))
return -1;
ret = plugin_dispatch_values (&vl);
sfree (vl.values);
return ret;
} /* static int pplugin_dispatch_values (char *, HV *) */
/*
* Submit the values to a single write function.
*/
static int pplugin_write (pTHX_ const char *plugin, AV *data_set, HV *values)
{
data_set_t ds;
value_list_t vl = VALUE_LIST_INIT;
int ret;
if (NULL == values)
return -1;
if (0 != hv2value_list (aTHX_ values, &vl))
return -1;
if ((NULL != data_set)
&& (0 != av2data_set (aTHX_ data_set, vl.type, &ds)))
return -1;
ret = plugin_write (plugin, NULL == data_set ? NULL : &ds, &vl);
if (0 != ret)
log_warn ("Dispatching value to plugin \"%s\" failed with status %i.",
NULL == plugin ? "<any>" : plugin, ret);
if (NULL != data_set)
sfree (ds.ds);
sfree (vl.values);
return ret;
} /* static int pplugin_write (const char *plugin, HV *, HV *) */
/*
* Dispatch a notification.
*/
static int pplugin_dispatch_notification (pTHX_ HV *notif)
{
notification_t n;
int ret;
if (NULL == notif)
return -1;
memset (&n, 0, sizeof (n));
if (0 != hv2notification (aTHX_ notif, &n))
return -1;
ret = plugin_dispatch_notification (&n);
plugin_notification_meta_free (n.meta);
return ret;