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// SPDX-License-Identifier: GPL-3.0-or-later
#define NETDATA_RRD_INTERNALS
#include "rrd.h"
// ----------------------------------------------------------------------------
// RRDDIM index
int rrddim_compare(void* a, void* b) {
if(((RRDDIM *)a)->hash < ((RRDDIM *)b)->hash) return -1;
else if(((RRDDIM *)a)->hash > ((RRDDIM *)b)->hash) return 1;
else return strcmp(((RRDDIM *)a)->id, ((RRDDIM *)b)->id);
}
#define rrddim_index_add(st, rd) (RRDDIM *)avl_insert_lock(&((st)->dimensions_index), (avl *)(rd))
#define rrddim_index_del(st,rd ) (RRDDIM *)avl_remove_lock(&((st)->dimensions_index), (avl *)(rd))
static inline RRDDIM *rrddim_index_find(RRDSET *st, const char *id, uint32_t hash) {
RRDDIM tmp = {
.id = id,
.hash = (hash)?hash:simple_hash(id)
};
return (RRDDIM *)avl_search_lock(&(st->dimensions_index), (avl *) &tmp);
}
// ----------------------------------------------------------------------------
// RRDDIM - find a dimension
inline RRDDIM *rrddim_find(RRDSET *st, const char *id) {
debug(D_RRD_CALLS, "rrddim_find() for chart %s, dimension %s", st->name, id);
return rrddim_index_find(st, id, 0);
}
// ----------------------------------------------------------------------------
// RRDDIM rename a dimension
inline int rrddim_set_name(RRDSET *st, RRDDIM *rd, const char *name) {
if(unlikely(!name || !*name || !strcmp(rd->name, name)))
return 0;
debug(D_RRD_CALLS, "rrddim_set_name() from %s.%s to %s.%s", st->name, rd->name, st->name, name);
char varname[CONFIG_MAX_NAME + 1];
snprintfz(varname, CONFIG_MAX_NAME, "dim %s name", rd->id);
rd->name = config_set_default(st->config_section, varname, name);
rd->hash_name = simple_hash(rd->name);
rrddimvar_rename_all(rd);
rd->exposed = 0;
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
return 1;
}
inline int rrddim_set_algorithm(RRDSET *st, RRDDIM *rd, RRD_ALGORITHM algorithm) {
if(unlikely(rd->algorithm == algorithm))
return 0;
debug(D_RRD_CALLS, "Updating algorithm of dimension '%s/%s' from %s to %s", st->id, rd->name, rrd_algorithm_name(rd->algorithm), rrd_algorithm_name(algorithm));
rd->algorithm = algorithm;
rd->exposed = 0;
rrdset_flag_set(st, RRDSET_FLAG_HOMEGENEOUS_CHECK);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
return 1;
}
inline int rrddim_set_multiplier(RRDSET *st, RRDDIM *rd, collected_number multiplier) {
if(unlikely(rd->multiplier == multiplier))
return 0;
debug(D_RRD_CALLS, "Updating multiplier of dimension '%s/%s' from " COLLECTED_NUMBER_FORMAT " to " COLLECTED_NUMBER_FORMAT, st->id, rd->name, rd->multiplier, multiplier);
rd->multiplier = multiplier;
rd->exposed = 0;
rrdset_flag_set(st, RRDSET_FLAG_HOMEGENEOUS_CHECK);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
return 1;
}
inline int rrddim_set_divisor(RRDSET *st, RRDDIM *rd, collected_number divisor) {
if(unlikely(rd->divisor == divisor))
return 0;
debug(D_RRD_CALLS, "Updating divisor of dimension '%s/%s' from " COLLECTED_NUMBER_FORMAT " to " COLLECTED_NUMBER_FORMAT, st->id, rd->name, rd->divisor, divisor);
rd->divisor = divisor;
rd->exposed = 0;
rrdset_flag_set(st, RRDSET_FLAG_HOMEGENEOUS_CHECK);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
return 1;
}
// ----------------------------------------------------------------------------
// RRDDIM create a dimension
RRDDIM *rrddim_add_custom(RRDSET *st, const char *id, const char *name, collected_number multiplier, collected_number divisor, RRD_ALGORITHM algorithm, RRD_MEMORY_MODE memory_mode) {
rrdset_wrlock(st);
rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
RRDDIM *rd = rrddim_find(st, id);
if(unlikely(rd)) {
debug(D_RRD_CALLS, "Cannot create rrd dimension '%s/%s', it already exists.", st->id, name?name:"<NONAME>");
rrddim_set_name(st, rd, name);
rrddim_set_algorithm(st, rd, algorithm);
rrddim_set_multiplier(st, rd, multiplier);
rrddim_set_divisor(st, rd, divisor);
rrdset_unlock(st);
return rd;
}
RRDHOST *host = st->rrdhost;
char filename[FILENAME_MAX + 1];
char fullfilename[FILENAME_MAX + 1];
char varname[CONFIG_MAX_NAME + 1];
unsigned long size = sizeof(RRDDIM) + (st->entries * sizeof(storage_number));
debug(D_RRD_CALLS, "Adding dimension '%s/%s'.", st->id, id);
rrdset_strncpyz_name(filename, id, FILENAME_MAX);
snprintfz(fullfilename, FILENAME_MAX, "%s/%s.db", st->cache_dir, filename);
if(memory_mode == RRD_MEMORY_MODE_SAVE || memory_mode == RRD_MEMORY_MODE_MAP || memory_mode == RRD_MEMORY_MODE_RAM) {
rd = (RRDDIM *)mymmap(
(memory_mode == RRD_MEMORY_MODE_RAM)?NULL:fullfilename
, size
, ((memory_mode == RRD_MEMORY_MODE_MAP) ? MAP_SHARED : MAP_PRIVATE)
, 1
);
if(likely(rd)) {
// we have a file mapped for rd
memset(&rd->avl, 0, sizeof(avl));
rd->id = NULL;
rd->name = NULL;
rd->cache_filename = NULL;
rd->variables = NULL;
rd->next = NULL;
rd->rrdset = NULL;
rd->exposed = 0;
struct timeval now;
now_realtime_timeval(&now);
if(memory_mode == RRD_MEMORY_MODE_RAM) {
memset(rd, 0, size);
}
else {
int reset = 0;
if(strcmp(rd->magic, RRDDIMENSION_MAGIC) != 0) {
info("Initializing file %s.", fullfilename);
memset(rd, 0, size);
reset = 1;
}
else if(rd->memsize != size) {
error("File %s does not have the desired size, expected %lu but found %lu. Clearing it.", fullfilename, size, rd->memsize);
memset(rd, 0, size);
reset = 1;
}
else if(rd->update_every != st->update_every) {
error("File %s does not have the same update frequency, expected %d but found %d. Clearing it.", fullfilename, st->update_every, rd->update_every);
memset(rd, 0, size);
reset = 1;
}
else if(dt_usec(&now,
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