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// SPDX-License-Identifier: GPL-3.0-or-later
#define NETDATA_HEALTH_INTERNALS
#include "rrd.h"
// ----------------------------------------------------------------------------
// RRDSETVAR management
// CHART VARIABLES
static inline void rrdsetvar_free_variables(RRDSETVAR *rs) {
RRDSET *st = rs->rrdset;
RRDHOST *host = st->rrdhost;
// ------------------------------------------------------------------------
// CHART
rrdvar_free(host, &st->rrdvar_root_index, rs->var_local);
rs->var_local = NULL;
// ------------------------------------------------------------------------
// FAMILY
rrdvar_free(host, &st->rrdfamily->rrdvar_root_index, rs->var_family);
rs->var_family = NULL;
rrdvar_free(host, &st->rrdfamily->rrdvar_root_index, rs->var_family_name);
rs->var_family_name = NULL;
// ------------------------------------------------------------------------
// HOST
rrdvar_free(host, &host->rrdvar_root_index, rs->var_host);
rs->var_host = NULL;
rrdvar_free(host, &host->rrdvar_root_index, rs->var_host_name);
rs->var_host_name = NULL;
// ------------------------------------------------------------------------
// KEYS
freez(rs->key_fullid);
rs->key_fullid = NULL;
freez(rs->key_fullname);
rs->key_fullname = NULL;
}
static inline void rrdsetvar_create_variables(RRDSETVAR *rs) {
RRDSET *st = rs->rrdset;
RRDHOST *host = st->rrdhost;
RRDVAR_OPTIONS options = rs->options;
if(rs->options & RRDVAR_OPTION_ALLOCATED)
options &= ~ RRDVAR_OPTION_ALLOCATED;
// ------------------------------------------------------------------------
// free the old ones (if any)
rrdsetvar_free_variables(rs);
// ------------------------------------------------------------------------
// KEYS
char buffer[RRDVAR_MAX_LENGTH + 1];
snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->id, rs->variable);
rs->key_fullid = strdupz(buffer);
snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->name, rs->variable);
rs->key_fullname = strdupz(buffer);
// ------------------------------------------------------------------------
// CHART
rs->var_local = rrdvar_create_and_index("local", &st->rrdvar_root_index, rs->variable, rs->type, options, rs->value);
// ------------------------------------------------------------------------
// FAMILY
rs->var_family = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_fullid, rs->type, options, rs->value);
rs->var_family_name = rrdvar_create_and_index("family", &st->rrdfamily->rrdvar_root_index, rs->key_fullname, rs->type, options, rs->value);
// ------------------------------------------------------------------------
// HOST
rs->var_host = rrdvar_create_and_index("host", &host->rrdvar_root_index, rs->key_fullid, rs->type, options, rs->value);
rs->var_host_name = rrdvar_create_and_index("host", &host->rrdvar_root_index, rs->key_fullname, rs->type, options, rs->value);
}
RRDSETVAR *rrdsetvar_create(RRDSET *st, const char *variable, RRDVAR_TYPE type, void *value, RRDVAR_OPTIONS options) {
debug(D_VARIABLES, "RRDVARSET create for chart id '%s' name '%s' with variable name '%s'", st->id, st->name, variable);
RRDSETVAR *rs = (RRDSETVAR *)callocz(1, sizeof(RRDSETVAR));
rs->variable = strdupz(variable);
rs->hash = simple_hash(rs->variable);
rs->type = type;
rs->value = value;
rs->options = options;
rs->rrdset = st;
rs->next = st->variables;
st->variables = rs;
rrdsetvar_create_variables(rs);
return rs;
}
void rrdsetvar_rename_all(RRDSET *st) {
debug(D_VARIABLES, "RRDSETVAR rename for chart id '%s' name '%s'", st->id, st->name);
RRDSETVAR *rs;
for(rs = st->variables; rs ; rs = rs->next)
rrdsetvar_create_variables(rs);
rrdsetcalc_link_matching(st);
}
void rrdsetvar_free(RRDSETVAR *rs) {
RRDSET *st = rs->rrdset;
debug(D_VARIABLES, "RRDSETVAR free for chart id '%s' name '%s', variable '%s'", st->id, st->name, rs->variable);
if(st->variables == rs) {
st->variables = rs->next;
}
else {
RRDSETVAR *t;
for (t = st->variables; t && t->next != rs; t = t->next);
if(!t) error("RRDSETVAR '%s' not found in chart '%s' variables linked list", rs->key_fullname, st->id);
else t->next = rs->next;
}
rrdsetvar_free_variables(rs);
freez(rs->variable);
if(rs->options & RRDVAR_OPTION_ALLOCATED)
freez(rs->value);
freez(rs);
}
// --------------------------------------------------------------------------------------------------------------------
// custom chart variables
RRDSETVAR *rrdsetvar_custom_chart_variable_create(RRDSET *st, const char *name) {
RRDHOST *host = st->rrdhost;
char *n = strdupz(name);
rrdvar_fix_name(n);
uint32_t hash = simple_hash(n);
rrdset_wrlock(st);
// find it
RRDSETVAR *rs;
for(rs = st->variables; rs ; rs = rs->next) {
if(hash == rs->hash && strcmp(n, rs->variable) == 0) {
rrdset_unlock(st);
if(rs->options & RRDVAR_OPTION_CUSTOM_CHART_VAR) {
free(n);
return rs;
}
else {
error("RRDSETVAR: custom variable '%s' on chart '%s' of host '%s', conflicts with an internal chart variable", n, st->id, host->hostname);
free(n);
return NULL;
}
}
}
// not found, allocate one
calculated_number *v = mallocz(sizeof(calculated_number));
*v = NAN;
rs = rrdsetvar_create(st, n, RRDVAR_TYPE_CALCULATED, v, RRDVAR_OPTION_ALLOCATED|RRDVAR_OPTION_CUSTOM_CHART_VAR);
rrdset_unlock(st);
freez(n);
return rs;
}
void rrdsetvar_custom_chart_variable_set(RRDSETVAR *rs, calculated_number value) {
if(rs->type != RRDVAR_TYPE_CALCULATED || !(rs->options & RRDVAR_OPTION_CUSTOM_CHART_VAR) || !(rs->options & RRDVAR_OPTION_ALLOCATED)) {
error("RRDSETVAR: requested to set variable '%s' of chart '%s' on host '%s' to value " CALCULATED_NUMBER_FORMAT " but the variable is not a custom chart one.", rs->variable, rs->rrdset->id, rs->rrdset->rrdhost->hostname, value);
}
else {
calculated_number *v = rs->value;
if(*v != value) {
*v = value;
// mark the chart to be sent upstream
rrdset_flag_clear(rs->rrdset, RRDSET_FLAG_UPSTREAM_EXPOSED);
}
}
}
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