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// SPDX-License-Identifier: GPL-3.0-or-later
#include "rrd.h"
// ----------------------------------------------------------------------------
// 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.
*/
static char *rrdcalc_alert_name_with_dimension(const char *name, size_t namelen, const char *dim, size_t dimlen) {
char *newname,*move;
newname = mallocz(namelen + dimlen + 2);
move = newname;
memcpy(move, name, namelen);
move += namelen;
*move++ = '_';
memcpy(move, dim, dimlen);
move += dimlen;
*move = '\0';
return newname;
}
bool rrdcalctemplate_check_rrdset_conditions(RRDCALCTEMPLATE *rt, RRDSET *st, RRDHOST *host) {
if(rt->context != st->context)
return false;
if(rt->foreach_dimension_pattern && !rrdset_number_of_dimensions(st))
return false;
if (rt->charts_pattern && !simple_pattern_matches_string(rt->charts_pattern, st->name) && !simple_pattern_matches_string(rt->charts_pattern, st->id))
return false;
if (rt->module_pattern && !simple_pattern_matches_string(rt->module_pattern, st->module_name))
return false;
if (rt->plugin_pattern && !simple_pattern_matches_string(rt->plugin_pattern, st->plugin_name))
return false;
if(host->rrdlabels && rt->host_labels_pattern && !rrdlabels_match_simple_pattern_parsed(host->rrdlabels,
rt->host_labels_pattern,
'=', NULL))
return false;
if(st->rrdlabels && rt->chart_labels_pattern && !rrdlabels_match_simple_pattern_parsed(st->rrdlabels,
rt->chart_labels_pattern,
'=', NULL))
return false;
return true;
}
void rrdcalctemplate_check_rrddim_conditions_and_link(RRDCALCTEMPLATE *rt, RRDSET *st, RRDDIM *rd, RRDHOST *host) {
if (simple_pattern_matches_string(rt->foreach_dimension_pattern, rd->id) ||
simple_pattern_matches_string(rt->foreach_dimension_pattern, rd->name)) {
char *overwrite_alert_name = rrdcalc_alert_name_with_dimension(
rrdcalctemplate_name(rt), string_strlen(rt->name), rrddim_name(rd), string_strlen(rd->name));
rrdcalc_add_from_rrdcalctemplate(host, rt, st, overwrite_alert_name, rrddim_name(rd));
freez(overwrite_alert_name);
}
}
void rrdcalctemplate_check_conditions_and_link(RRDCALCTEMPLATE *rt, RRDSET *st, RRDHOST *host) {
if(!rrdcalctemplate_check_rrdset_conditions(rt, st, host))
return;
if(!rt->foreach_dimension_pattern) {
rrdcalc_add_from_rrdcalctemplate(host, rt, st, NULL, NULL);
return;
}
RRDDIM *rd;
rrddim_foreach_read(rd, st) {
rrdcalctemplate_check_rrddim_conditions_and_link(rt, st, rd, host);
}
rrddim_foreach_done(rd);
}
void rrdcalctemplate_link_matching_templates_to_rrdset(RRDSET *st) {
RRDHOST *host = st->rrdhost;
RRDCALCTEMPLATE *rt;
foreach_rrdcalctemplate_read(host, rt) {
rrdcalctemplate_check_conditions_and_link(rt, st, host);
}
foreach_rrdcalctemplate_done(rt);
}
static void rrdcalctemplate_free_internals(RRDCALCTEMPLATE *rt) {
expression_free(rt->calculation);
expression_free(rt->warning);
expression_free(rt->critical);
string_freez(rt->plugin_match);
simple_pattern_free(rt->plugin_pattern);
string_freez(rt->module_match);
simple_pattern_free(rt->module_pattern);
string_freez(rt->charts_match);
simple_pattern_free(rt->charts_pattern);
string_freez(rt->name);
string_freez(rt->exec);
string_freez(rt->recipient);
string_freez(rt->classification);
string_freez(rt->component);
string_freez(rt->type);
string_freez(rt->context);
string_freez(rt->source);
string_freez(rt->units);
string_freez(rt->info);
string_freez(rt->dimensions);
string_freez(rt->foreach_dimension);
string_freez(rt->host_labels);
string_freez(rt->chart_labels);
simple_pattern_free(rt->foreach_dimension_pattern);
simple_pattern_free(rt->host_labels_pattern);
simple_pattern_free(rt->chart_labels_pattern);
}
void rrdcalctemplate_free_unused_rrdcalctemplate_loaded_from_config(RRDCALCTEMPLATE *rt) {
if(unlikely(!rt)) return;
rrdcalctemplate_free_internals(rt);
freez(rt);
}
static void rrdcalctemplate_insert_callback(const DICTIONARY_ITEM *item __maybe_unused, void *rrdcalctemplate, void *added_bool) {
RRDCALCTEMPLATE *rt = rrdcalctemplate; (void)rt;
bool *added = added_bool;
*added = true;
netdata_log_debug(D_HEALTH, "Health configuration adding template '%s'"
": context '%s'"
", exec '%s'"
", recipient '%s'"
", green " NETDATA_DOUBLE_FORMAT_AUTO
", red " NETDATA_DOUBLE_FORMAT_AUTO
", lookup: group %d"
", after %d"
", before %d"
", options %u"
", dimensions '%s'"
", for each dimension '%s'"
", update every %d"
", calculation '%s'"
", warning '%s'"
", critical '%s'"
", source '%s'"
", delay up %d"
", delay down %d"
", delay max %d"
", delay_multiplier %f"
", warn_repeat_every %u"
", crit_repeat_every %u",
rrdcalctemplate_name(rt),
(rt->context)?string2str(rt->context):"NONE",
(rt->exec)?rrdcalctemplate_exec(rt):"DEFAULT",
(rt->recipient)?rrdcalctemplate_recipient(rt):"DEFAULT",
rt->green,
rt->red,
(int)rt->group,
rt->after,
rt->before,
rt->options,
(rt->dimensions)?rrdcalctemplate_dimensions(rt):"NONE",
(rt->foreach_dimension)?rrdcalctemplate_foreachdim(rt):"NONE",
rt->update_every,
(rt->calculation)?rt->calculation->parsed_as:"NONE",
(rt->warning)?rt->warning->parsed_as:"NONE",
(rt->critical)?rt->critical->parsed_as:"NONE",
rrdcalctemplate_source(rt),
rt->delay_up_duration,
rt->delay_down_duration,
rt->delay_max_duration,
rt->delay_multiplier,
rt->warn_repeat_every,
rt->crit_repeat_every
);
}
static void rrdcalctemplate_delete_callback(const DICTIONARY_ITEM *item __maybe_unused, void *rrdcalctemplate, void *rrdhost __maybe_unused) {
RRDCALCTEMPLATE *rt = rrdcalctemplate;
rrdcalctemplate_free_internals(rt);
}
void rrdcalctemplate_index_init(RRDHOST *host) {
if(!host->rrdcalctemplate_root_index) {
host->rrdcalctemplate_root_index = dictionary_create_advanced(DICT_OPTION_DONT_OVERWRITE_VALUE | DICT_OPTION_FIXED_SIZE,
&dictionary_stats_category_rrdhealth, sizeof(RRDCALCTEMPLATE));
dictionary_register_insert_callback(host->rrdcalctemplate_root_index, rrdcalctemplate_insert_callback, NULL);
dictionary_register_delete_callback(host->rrdcalctemplate_root_index, rrdcalctemplate_delete_callback, host);
}
}
void rrdcalctemplate_index_destroy(RRDHOST *host) {
dictionary_destroy(host->rrdcalctemplate_root_index);
host->rrdcalctemplate_root_index = NULL;
}
inline void rrdcalctemplate_delete_all(RRDHOST *host) {
dictionary_flush(host->rrdcalctemplate_root_index);
}
#define RRDCALCTEMPLATE_MAX_KEY_SIZE 1024
void rrdcalctemplate_add_from_config(RRDHOST *host, RRDCALCTEMPLATE *rt) {
if(unlikely(!rt->context)) {
netdata_log_error("Health configuration for template '%s' does not have a context", rrdcalctemplate_name(rt));
return;
}
if(unlikely(!rt->update_every)) {
netdata_log_error("Health configuration for template '%s' has no frequency (parameter 'every'). Ignoring it.", rrdcalctemplate_name(rt));
return;
}
if(unlikely(!RRDCALCTEMPLATE_HAS_DB_LOOKUP(rt) && !rt->calculation && !rt->warning && !rt->critical)) {
netdata_log_error("Health configuration for template '%s' is useless (no calculation, no warning and no critical evaluation)", rrdcalctemplate_name(rt));
return;
}
char key[RRDCALCTEMPLATE_MAX_KEY_SIZE + 1];
size_t key_len = snprintfz(key, RRDCALCTEMPLATE_MAX_KEY_SIZE, "%s", rrdcalctemplate_name(rt));
bool added = false;
dictionary_set_advanced(host->rrdcalctemplate_root_index, key, (ssize_t)(key_len + 1), rt, sizeof(*rt), &added);
if(added)
freez(rt);
else {
netdata_log_info("Health configuration template '%s' already exists for host '%s'.", rrdcalctemplate_name(rt), rrdhost_hostname(host));
rrdcalctemplate_free_unused_rrdcalctemplate_loaded_from_config(rt);
}
}
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