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netdata/database/rrddim.c

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// SPDX-License-Identifier: GPL-3.0-or-later
#define NETDATA_RRD_INTERNALS
#include "rrd.h"
#ifdef ENABLE_DBENGINE
#include "database/engine/rrdengineapi.h"
#endif
#include "storage_engine.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_t *)(rd))
#define rrddim_index_del(st,rd ) (RRDDIM *)avl_remove_lock(&((st)->dimensions_index), (avl_t *)(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_t *) &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 || (rd->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);
if (rd->name)
freez((void *) rd->name);
rd->name = strdupz(name);
rd->hash_name = simple_hash(rd->name);
if (!st->state->is_ar_chart)
rrddimvar_rename_all(rd);
rd->exposed = 0;
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
ml_dimension_update_name(st, rd, name);
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_HOMOGENEOUS_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_HOMOGENEOUS_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_HOMOGENEOUS_CHECK);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
return 1;
}
// ----------------------------------------------------------------------------
// RRDDIM create a dimension
void rrdcalc_link_to_rrddim(RRDDIM *rd, RRDSET *st, RRDHOST *host) {
RRDCALC *rrdc;
for (rrdc = host->alarms_with_foreach; rrdc ; rrdc = rrdc->next) {
if (simple_pattern_matches(rrdc->spdim, rd->id) || simple_pattern_matches(rrdc->spdim, rd->name)) {
if (rrdc->hash_chart == st->hash_name || !strcmp(rrdc->chart, st->name) || !strcmp(rrdc->chart, st->id)) {
char *name = alarm_name_with_dim(rrdc->name, strlen(rrdc->name), rd->name, strlen(rd->name));
if(rrdcalc_exists(host, st->name, name, 0, 0)) {
freez(name);
continue;
}
netdata_rwlock_wrlock(&host->health_log.alarm_log_rwlock);
RRDCALC *child = rrdcalc_create_from_rrdcalc(rrdc, host, name, rd->name);
netdata_rwlock_unlock(&host->health_log.alarm_log_rwlock);
if (child) {
rrdcalc_add_to_host(host, child);
RRDCALC *rdcmp = (RRDCALC *) avl_insert_lock(&(host)->alarms_idx_health_log,(avl_t *)child);
if (rdcmp != child) {
error("Cannot insert the alarm index ID %s",child->name);
}
}
else {
error("Cannot allocate a new alarm.");
rrdc->foreachcounter--;
}
}
}
}
}
// Return either
// 0 : Dimension is live
// last collected time : Dimension is not live
#ifdef ENABLE_ACLK
time_t calc_dimension_liveness(RRDDIM *rd, time_t now)
{
time_t last_updated = rd->last_collected_time.tv_sec;
int live;
if (rd->state->aclk_live_status == 1)
live =
((now - last_updated) <
MIN(rrdset_free_obsolete_time, RRDSET_MINIMUM_DIM_OFFLINE_MULTIPLIER * rd->update_every));
else
live = ((now - last_updated) < RRDSET_MINIMUM_DIM_LIVE_MULTIPLIER * rd->update_every);
return live ? 0 : last_updated;
}
#endif
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)
{
RRDHOST *host = st->rrdhost;
rrdset_wrlock(st);
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>");
int rc = rrddim_set_name(st, rd, name);
rc += rrddim_set_algorithm(st, rd, algorithm);
rc += rrddim_set_multiplier(st, rd, multiplier);
rc += rrddim_set_divisor(st, rd, divisor);
if (rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED)) {
store_active_dimension(&rd->state->metric_uuid);
rd->state->collect_ops.init(rd);
rrddim_flag_clear(rd, RRDDIM_FLAG_ARCHIVED);
rrddimvar_create(rd, RRDVAR_TYPE_CALCULATED, NULL, NULL, &rd->last_stored_value, RRDVAR_OPTION_DEFAULT);
rrddimvar_create(rd, RRDVAR_TYPE_COLLECTED, NULL, "_raw", &rd->last_collected_value, RRDVAR_OPTION_DEFAULT);
rrddimvar_create(rd, RRDVAR_TYPE_TIME_T, NULL, "_last_collected_t", &rd->last_collected_time.tv_sec, RRDVAR_OPTION_DEFAULT);
rrddim_flag_set(rd, RRDDIM_FLAG_PENDING_FOREACH_ALARM);
rrdset_flag_set(st, RRDSET_FLAG_PENDING_FOREACH_ALARMS);
rrdhost_flag_set(host, RRDHOST_FLAG_PENDING_FOREACH_ALARMS);
}
if (unlikely(rc)) {
debug(D_METADATALOG, "DIMENSION [%s] metadata updated", rd->id);
(void)sql_store_dimension(&rd->state->metric_uuid, rd->rrdset->chart_uuid, rd->id, rd->name, rd->multiplier, rd->divisor,
rd->algorithm);
#ifdef ENABLE_ACLK
queue_dimension_to_aclk(rd, calc_dimension_liveness(rd, now_realtime_sec()));
#endif
rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
}
rrdset_unlock(st);
return rd;
}
rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
rd = callocz(1, sizeof(RRDDIM));
rd->id = strdupz(id);
rd->hash = simple_hash(rd->id);
rd->name = (name && *name)?strdupz(name):strdupz(rd->id);
rd->hash_name = simple_hash(rd->name);
rd->algorithm = algorithm;
rd->multiplier = multiplier;
rd->divisor = divisor;
if(!rd->divisor) rd->divisor = 1;
rd->entries = st->entries;
rd->update_every = st->update_every;
if(rrdset_flag_check(st, RRDSET_FLAG_STORE_FIRST))
rd->collections_counter = 1;
rd->rrdset = st;
if(memory_mode == RRD_MEMORY_MODE_MAP || memory_mode == RRD_MEMORY_MODE_SAVE) {
if(!rrddim_memory_load_or_create_map_save(st, rd, memory_mode)) {
info("Failed to use memory mode %s for chart '%s', dimension '%s', falling back to ram", (memory_mode == RRD_MEMORY_MODE_MAP)?"map":"save", st->name, rd->name);
memory_mode = RRD_MEMORY_MODE_RAM;
}
}
if(memory_mode == RRD_MEMORY_MODE_RAM) {
size_t entries = st->entries;
if(!entries) entries = 5;
rd->db = netdata_mmap(NULL, entries * sizeof(storage_number), MAP_PRIVATE, 1);
if(!rd->db) {
info("Failed to use memory mode ram for chart '%s', dimension '%s', falling back to alloc", st->name, rd->name);
memory_mode = RRD_MEMORY_MODE_ALLOC;
}
else rd->memsize = entries * sizeof(storage_number);
}
if(memory_mode == RRD_MEMORY_MODE_ALLOC || memory_mode == RRD_MEMORY_MODE_NONE) {
size_t entries = st->entries;
if(entries < 5) entries = 5;
rd->db = callocz(entries, sizeof(storage_number));
rd->memsize = entries * sizeof(storage_number);
}
rd->rrd_memory_mode = memory_mode;
rd->state = callocz(1, sizeof(*rd->state));
#ifdef ENABLE_ACLK
rd->state->aclk_live_status = -1;
#endif
(void) find_dimension_uuid(st, rd, &(rd->state->metric_uuid));
STORAGE_ENGINE* eng = storage_engine_get(memory_mode);
rd->state->collect_ops = eng->api.collect_ops;
rd->state->query_ops = eng->api.query_ops;
#ifdef ENABLE_DBENGINE
if(memory_mode == RRD_MEMORY_MODE_DBENGINE) {
rrdeng_metric_init(rd);
}
#endif
store_active_dimension(&rd->state->metric_uuid);
rd->state->collect_ops.init(rd);
// append this dimension
if(!st->dimensions)
st->dimensions = rd;
else {
RRDDIM *td = st->dimensions;
if(td->algorithm != rd->algorithm || ABS(td->multiplier) != ABS(rd->multiplier) || ABS(td->divisor) != ABS(rd->divisor)) {
if(!rrdset_flag_check(st, RRDSET_FLAG_HETEROGENEOUS)) {
#ifdef NETDATA_INTERNAL_CHECKS
info("Dimension '%s' added on chart '%s' of host '%s' is not homogeneous to other dimensions already present (algorithm is '%s' vs '%s', multiplier is " COLLECTED_NUMBER_FORMAT " vs " COLLECTED_NUMBER_FORMAT ", divisor is " COLLECTED_NUMBER_FORMAT " vs " COLLECTED_NUMBER_FORMAT ").",
rd->name,
st->name,
host->hostname,
rrd_algorithm_name(rd->algorithm), rrd_algorithm_name(td->algorithm),
rd->multiplier, td->multiplier,
rd->divisor, td->divisor
);
#endif
rrdset_flag_set(st, RRDSET_FLAG_HETEROGENEOUS);
}
}
for(; td->next; td = td->next) ;
td->next = rd;
}
if(host->health_enabled && !st->state->is_ar_chart) {
rrddimvar_create(rd, RRDVAR_TYPE_CALCULATED, NULL, NULL, &rd->last_stored_value, RRDVAR_OPTION_DEFAULT);
rrddimvar_create(rd, RRDVAR_TYPE_COLLECTED, NULL, "_raw", &rd->last_collected_value, RRDVAR_OPTION_DEFAULT);
rrddimvar_create(rd, RRDVAR_TYPE_TIME_T, NULL, "_last_collected_t", &rd->last_collected_time.tv_sec, RRDVAR_OPTION_DEFAULT);
}
if(unlikely(rrddim_index_add(st, rd) != rd))
error("RRDDIM: INTERNAL ERROR: attempt to index duplicate dimension '%s' on chart '%s'", rd->id, st->id);
rrddim_flag_set(rd, RRDDIM_FLAG_PENDING_FOREACH_ALARM);
rrdset_flag_set(st, RRDSET_FLAG_PENDING_FOREACH_ALARMS);
rrdhost_flag_set(host, RRDHOST_FLAG_PENDING_FOREACH_ALARMS);
ml_new_dimension(rd);
rrdset_unlock(st);
return(rd);
}
// ----------------------------------------------------------------------------
// RRDDIM remove / free a dimension
void rrddim_free(RRDSET *st, RRDDIM *rd)
{
ml_delete_dimension(rd);
debug(D_RRD_CALLS, "rrddim_free() %s.%s", st->name, rd->name);
if (!rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED)) {
uint8_t can_delete_metric = rd->state->collect_ops.finalize(rd);
if (can_delete_metric && rd->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
/* This metric has no data and no references */
delete_dimension_uuid(&rd->state->metric_uuid);
}
}
if(rd == st->dimensions)
st->dimensions = rd->next;
else {
RRDDIM *i;
for (i = st->dimensions; i && i->next != rd; i = i->next) ;
if (i && i->next == rd)
i->next = rd->next;
else
error("Request to free dimension '%s.%s' but it is not linked.", st->id, rd->name);
}
rd->next = NULL;
while(rd->variables)
rrddimvar_free(rd->variables);
if(unlikely(rrddim_index_del(st, rd) != rd))
error("RRDDIM: INTERNAL ERROR: attempt to remove from index dimension '%s' on chart '%s', removed a different dimension.", rd->id, st->id);
// free(rd->annotations);
//#ifdef ENABLE_ACLK
// if (!netdata_exit)
// aclk_send_dimension_update(rd);
//#endif
freez((void *)rd->id);
freez((void *)rd->name);
freez(rd->state);
// this will free MEMORY_MODE_SAVE and MEMORY_MODE_MAP structures
rrddim_memory_file_free(rd);
if(rd->db) {
if(rd->rrd_memory_mode == RRD_MEMORY_MODE_RAM)
munmap(rd->db, rd->memsize);
else
freez(rd->db);
}
freez(rd);
}
// ----------------------------------------------------------------------------
// RRDDIM - set dimension options
int rrddim_hide(RRDSET *st, const char *id) {
debug(D_RRD_CALLS, "rrddim_hide() for chart %s, dimension %s", st->name, id);
RRDHOST *host = st->rrdhost;
RRDDIM *rd = rrddim_find(st, id);
if(unlikely(!rd)) {
error("Cannot find dimension with id '%s' on stats '%s' (%s) on host '%s'.", id, st->name, st->id, host->hostname);
return 1;
}
if (!rrddim_flag_check(rd, RRDDIM_FLAG_META_HIDDEN))
(void)sql_set_dimension_option(&rd->state->metric_uuid, "hidden");
rrddim_flag_set(rd, RRDDIM_FLAG_HIDDEN);
rrddim_flag_set(rd, RRDDIM_FLAG_META_HIDDEN);
return 0;
}
int rrddim_unhide(RRDSET *st, const char *id) {
debug(D_RRD_CALLS, "rrddim_unhide() for chart %s, dimension %s", st->name, id);
RRDHOST *host = st->rrdhost;
RRDDIM *rd = rrddim_find(st, id);
if(unlikely(!rd)) {
error("Cannot find dimension with id '%s' on stats '%s' (%s) on host '%s'.", id, st->name, st->id, host->hostname);
return 1;
}
if (rrddim_flag_check(rd, RRDDIM_FLAG_META_HIDDEN))
(void)sql_set_dimension_option(&rd->state->metric_uuid, NULL);
rrddim_flag_clear(rd, RRDDIM_FLAG_HIDDEN);
rrddim_flag_clear(rd, RRDDIM_FLAG_META_HIDDEN);
return 0;
}
inline void rrddim_is_obsolete(RRDSET *st, RRDDIM *rd) {
debug(D_RRD_CALLS, "rrddim_is_obsolete() for chart %s, dimension %s", st->name, rd->name);
if(unlikely(rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED))) {
info("Cannot obsolete already archived dimension %s from chart %s", rd->name, st->name);
return;
}
rrddim_flag_set(rd, RRDDIM_FLAG_OBSOLETE);
rrdset_flag_set(st, RRDSET_FLAG_OBSOLETE_DIMENSIONS);
}
inline void rrddim_isnot_obsolete(RRDSET *st __maybe_unused, RRDDIM *rd) {
debug(D_RRD_CALLS, "rrddim_isnot_obsolete() for chart %s, dimension %s", st->name, rd->name);
rrddim_flag_clear(rd, RRDDIM_FLAG_OBSOLETE);
}
// ----------------------------------------------------------------------------
// RRDDIM - collect values for a dimension
inline collected_number rrddim_set_by_pointer(RRDSET *st __maybe_unused, RRDDIM *rd, collected_number value) {
debug(D_RRD_CALLS, "rrddim_set_by_pointer() for chart %s, dimension %s, value " COLLECTED_NUMBER_FORMAT, st->name, rd->name, value);
now_realtime_timeval(&rd->last_collected_time);
rd->collected_value = value;
rd->updated = 1;
rd->collections_counter++;
collected_number v = (value >= 0) ? value : -value;
if(unlikely(v > rd->collected_value_max)) rd->collected_value_max = v;
// fprintf(stderr, "%s.%s %llu " COLLECTED_NUMBER_FORMAT " dt %0.6f" " rate " NETDATA_DOUBLE_FORMAT "\n", st->name, rd->name, st->usec_since_last_update, value, (float)((double)st->usec_since_last_update / (double)1000000), (NETDATA_DOUBLE)((value - rd->last_collected_value) * (NETDATA_DOUBLE)rd->multiplier / (NETDATA_DOUBLE)rd->divisor * 1000000.0 / (NETDATA_DOUBLE)st->usec_since_last_update));
return rd->last_collected_value;
}
collected_number rrddim_set(RRDSET *st, const char *id, collected_number value) {
RRDHOST *host = st->rrdhost;
RRDDIM *rd = rrddim_find(st, id);
if(unlikely(!rd)) {
error("Cannot find dimension with id '%s' on stats '%s' (%s) on host '%s'.", id, st->name, st->id, host->hostname);
return 0;
}
return rrddim_set_by_pointer(st, rd, value);
}
// ----------------------------------------------------------------------------
// compatibility layer for RRDDIM files v019
#define RRDDIMENSION_MAGIC_V019 "NETDATA RRD DIMENSION FILE V019"
struct avl_element_v019 {
void *avl_link[2];
signed char avl_balance;
};
struct rrddim_map_save_v019 {
struct avl_element_v019 avl; // ignored
void *id; // ignored
void *name; // ignored
uint32_t algorithm; // print warning on mismatch - update on load
uint32_t rrd_memory_mode; // ignored
long long multiplier; // print warning on mismatch - update on load
long long divisor; // print warning on mismatch - update on load
uint32_t flags; // ignored
uint32_t hash; // ignored
uint32_t hash_name; // ignored
void *cache_filename; // ignored - we use it to keep the filename to save back
size_t collections_counter; // ignored
void *state; // ignored
size_t unused[8]; // ignored
long long collected_value_max; // ignored
unsigned int updated:1; // ignored
unsigned int exposed:1; // ignored
struct timeval last_collected_time; // check to reset all - ignored after load
long double calculated_value; // ignored
long double last_calculated_value; // ignored
long double last_stored_value; // ignored
long long collected_value; // ignored
long long last_collected_value; // ignored
long double collected_volume; // ignored
long double stored_volume; // ignored
void *next; // ignored
void *rrdset; // ignored
long entries; // check to reset all - update on load
int update_every; // check to reset all - update on load
size_t memsize; // check to reset all - update on load
char magic[sizeof(RRDDIMENSION_MAGIC_V019) + 1];// check to reset all - update on load
void *variables; // ignored
storage_number values[]; // the array of values
};
size_t rrddim_memory_file_header_size(void) {
return sizeof(struct rrddim_map_save_v019);
}
void rrddim_memory_file_update(RRDDIM *rd) {
if(!rd->rd_on_file) return;
struct rrddim_map_save_v019 *rd_on_file = rd->rd_on_file;
rd_on_file->last_collected_time.tv_sec = rd->last_collected_time.tv_sec;
rd_on_file->last_collected_time.tv_usec = rd->last_collected_time.tv_usec;
}
void rrddim_memory_file_free(RRDDIM *rd) {
if(!rd->rd_on_file) return;
// needed for memory mode map, to save the latest state
rrddim_memory_file_update(rd);
struct rrddim_map_save_v019 *rd_on_file = rd->rd_on_file;
freez(rd_on_file->cache_filename);
munmap(rd_on_file, rd_on_file->memsize);
// remove the pointers from the RRDDIM
rd->rd_on_file = NULL;
rd->db = NULL;
}
const char *rrddim_cache_filename(RRDDIM *rd) {
if(!rd->rd_on_file) return NULL;
struct rrddim_map_save_v019 *rd_on_file = rd->rd_on_file;
return rd_on_file->cache_filename;
}
void rrddim_memory_file_save(RRDDIM *rd) {
if(!rd->rd_on_file) return;
rrddim_memory_file_update(rd);
struct rrddim_map_save_v019 *rd_on_file = rd->rd_on_file;
if(rd_on_file->rrd_memory_mode != RRD_MEMORY_MODE_SAVE) return;
memory_file_save(rd_on_file->cache_filename, rd_on_file, rd_on_file->memsize);
}
bool rrddim_memory_load_or_create_map_save(RRDSET *st, RRDDIM *rd, RRD_MEMORY_MODE memory_mode) {
if(memory_mode != RRD_MEMORY_MODE_SAVE && memory_mode != RRD_MEMORY_MODE_MAP)
return false;
struct rrddim_map_save_v019 *rd_on_file = NULL;
unsigned long size = sizeof(struct rrddim_map_save_v019) + (st->entries * sizeof(storage_number));
char filename[FILENAME_MAX + 1];
char fullfilename[FILENAME_MAX + 1];
rrdset_strncpyz_name(filename, rd->id, FILENAME_MAX);
snprintfz(fullfilename, FILENAME_MAX, "%s/%s.db", st->cache_dir, filename);
rd_on_file = (struct rrddim_map_save_v019 *)netdata_mmap(fullfilename, size,
((memory_mode == RRD_MEMORY_MODE_MAP) ? MAP_SHARED : MAP_PRIVATE), 1);
if(unlikely(!rd_on_file)) return false;
struct timeval now;
now_realtime_timeval(&now);
int reset = 0;
if(strcmp(rd_on_file->magic, RRDDIMENSION_MAGIC_V019) != 0) {
info("Initializing file %s.", fullfilename);
memset(rd_on_file, 0, size);
reset = 1;
}
else if(rd_on_file->memsize != size) {
error("File %s does not have the desired size, expected %lu but found %lu. Clearing it.", fullfilename, size, rd_on_file->memsize);
memset(rd_on_file, 0, size);
reset = 1;
}
else if(rd_on_file->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_on_file->update_every);
memset(rd_on_file, 0, size);
reset = 1;
}
else if(dt_usec(&now, &rd_on_file->last_collected_time) > (rd_on_file->entries * rd_on_file->update_every * USEC_PER_SEC)) {
info("File %s is too old (last collected %llu seconds ago, but the database is %ld seconds). Clearing it.", fullfilename, dt_usec(&now, &rd_on_file->last_collected_time) / USEC_PER_SEC, rd_on_file->entries * rd_on_file->update_every);
memset(rd_on_file, 0, size);
reset = 1;
}
if(!reset) {
if(rd_on_file->algorithm != rd->algorithm)
info("File %s does not have the expected algorithm (expected %u '%s', found %u '%s'). Previous values may be wrong.",
fullfilename, rd->algorithm, rrd_algorithm_name(rd->algorithm), rd_on_file->algorithm, rrd_algorithm_name(rd_on_file->algorithm));
if(rd_on_file->multiplier != rd->multiplier)
info("File %s does not have the expected multiplier (expected " COLLECTED_NUMBER_FORMAT ", found " COLLECTED_NUMBER_FORMAT "). Previous values may be wrong.", fullfilename, rd->multiplier, rd_on_file->multiplier);
if(rd_on_file->divisor != rd->divisor)
info("File %s does not have the expected divisor (expected " COLLECTED_NUMBER_FORMAT ", found " COLLECTED_NUMBER_FORMAT "). Previous values may be wrong.", fullfilename, rd->divisor, rd_on_file->divisor);
}
// zero the entire header
memset(rd_on_file, 0, sizeof(struct rrddim_map_save_v019));
// set the important fields
strcpy(rd_on_file->magic, RRDDIMENSION_MAGIC_V019);
rd_on_file->algorithm = rd->algorithm;
rd_on_file->multiplier = rd->multiplier;
rd_on_file->divisor = rd->divisor;
rd_on_file->entries = st->entries;
rd_on_file->update_every = rd->update_every;
rd_on_file->memsize = size;
rd_on_file->rrd_memory_mode = memory_mode;
rd_on_file->cache_filename = strdupz(fullfilename);
rd->db = &rd_on_file->values[0];
rd->rd_on_file = rd_on_file;
rd->memsize = size;
rrddim_memory_file_update(rd);
return true;
}
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