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// SPDX-License-Identifier: GPL-3.0-or-later
#define NETDATA_HEALTH_INTERNALS
#include "rrd.h"
// ----------------------------------------------------------------------------
static int rrdcalctemplate_is_there_label_restriction(RRDCALCTEMPLATE *rt, RRDHOST *host) {
if(!rt->labels)
return 0;
errno = 0;
struct label *move = host->labels.head;
char cmp[CONFIG_FILE_LINE_MAX+1];
int ret;
if(move) {
rrdhost_check_rdlock(host);
netdata_rwlock_rdlock(&host->labels.labels_rwlock);
while(move) {
snprintfz(cmp, CONFIG_FILE_LINE_MAX, "%s=%s", move->key, move->value);
if (simple_pattern_matches(rt->splabels, move->key) ||
simple_pattern_matches(rt->splabels, cmp)) {
break;
}
move = move->next;
}
netdata_rwlock_unlock(&host->labels.labels_rwlock);
if(!move) {
error("Health template '%s' cannot be applied, because the host %s does not have the label(s) '%s'",
rt->name,
host->hostname,
rt->labels
);
ret = 1;
} else {
ret = 0;
}
} else {
ret =0;
}
return ret;
}
static inline int rrdcalctemplate_test_additional_restriction(RRDCALCTEMPLATE *rt, RRDSET *st) {
if (rt->family_pattern && !simple_pattern_matches(rt->family_pattern, st->family))
return 0;
if (rt->module_pattern && !simple_pattern_matches(rt->module_pattern, st->module_name))
return 0;
if (rt->plugin_pattern && !simple_pattern_matches(rt->plugin_pattern, st->plugin_name))
return 0;
return 1;
}
// RRDCALCTEMPLATE management
/**
* RRDCALC TEMPLATE LINK MATCHING
*
* @param rt is the template used to create the chart.
* @param st is the chart where the alarm will be attached.
*/
void rrdcalctemplate_link_matching_test(RRDCALCTEMPLATE *rt, RRDSET *st, RRDHOST *host) {
if(rt->hash_context == st->hash_context && !strcmp(rt->context, st->context) &&
rrdcalctemplate_test_additional_restriction(rt, st) ) {
if (!rrdcalctemplate_is_there_label_restriction(rt, host)) {
RRDCALC *rc = rrdcalc_create_from_template(host, rt, st->id);
if (unlikely(!rc))
info("Health tried to create alarm from template '%s' on chart '%s' of host '%s', but it failed",
rt->name, st->id, host->hostname);
#ifdef NETDATA_INTERNAL_CHECKS
else if (rc->rrdset != st &&
!rc->foreachdim) //When we have a template with foreadhdim, the child will be added to the index late
error("Health alarm '%s.%s' should be linked to chart '%s', but it is not",
rc->chart ? rc->chart : "NOCHART", rc->name, st->id);
#endif
}
}
}
void rrdcalctemplate_link_matching(RRDSET *st) {
RRDHOST *host = st->rrdhost;
RRDCALCTEMPLATE *rt;
for(rt = host->templates; rt ; rt = rt->next) {
rrdcalctemplate_link_matching_test(rt, st, host);
}
for(rt = host->alarms_template_with_foreach; rt ; rt = rt->next) {
rrdcalctemplate_link_matching_test(rt, st, host);
}
}
inline void rrdcalctemplate_free(RRDCALCTEMPLATE *rt) {
if(unlikely(!rt)) return;
expression_free(rt->calculation);
expression_free(rt->warning);
expression_free(rt->critical);
freez(rt->family_match);
simple_pattern_free(rt->family_pattern);
freez(rt->plugin_match);
simple_pattern_free(rt->plugin_pattern);
freez(rt->module_match);
simple_pattern_free(rt->module_pattern);
freez(rt->name);
freez(rt->exec);
freez(rt->recipient);
freez(rt->context);
freez(rt->source);
freez(rt->units);
freez(rt->info);
freez(rt->dimensions);
freez(rt->foreachdim);
freez(rt->labels);
simple_pattern_free(rt->spdim);
simple_pattern_free(rt->splabels);
freez(rt);
}
inline void rrdcalctemplate_unlink_and_free(RRDHOST *host, RRDCALCTEMPLATE *rt) {
if(unlikely(!rt)) return;
debug(D_HEALTH, "Health removing template '%s' of host '%s'", rt->name, host->hostname);
if(host->templates == rt) {
host->templates = rt->next;
}
else {
RRDCALCTEMPLATE *t;
for (t = host->templates; t && t->next != rt; t = t->next ) ;
if(t) {
t->next = rt->next;
rt->next = NULL;
}
else
error("Cannot find RRDCALCTEMPLATE '%s' linked in host '%s'", rt->name, host->hostname);
}
rrdcalctemplate_free(rt);
}
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