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netdata/database/rrdset.c

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// SPDX-License-Identifier: GPL-3.0-or-later
#define NETDATA_RRD_INTERNALS
#include "rrd.h"
#include <sched.h>
void __rrdset_check_rdlock(RRDSET *st, const char *file, const char *function, const unsigned long line) {
debug(D_RRD_CALLS, "Checking read lock on chart '%s'", st->id);
int ret = netdata_rwlock_trywrlock(&st->rrdset_rwlock);
if(ret == 0)
fatal("RRDSET '%s' should be read-locked, but it is not, at function %s() at line %lu of file '%s'", st->id, function, line, file);
}
void __rrdset_check_wrlock(RRDSET *st, const char *file, const char *function, const unsigned long line) {
debug(D_RRD_CALLS, "Checking write lock on chart '%s'", st->id);
int ret = netdata_rwlock_tryrdlock(&st->rrdset_rwlock);
if(ret == 0)
fatal("RRDSET '%s' should be write-locked, but it is not, at function %s() at line %lu of file '%s'", st->id, function, line, file);
}
// ----------------------------------------------------------------------------
// RRDSET index
int rrdset_compare(void* a, void* b) {
if(((RRDSET *)a)->hash < ((RRDSET *)b)->hash) return -1;
else if(((RRDSET *)a)->hash > ((RRDSET *)b)->hash) return 1;
else return strcmp(((RRDSET *)a)->id, ((RRDSET *)b)->id);
}
static RRDSET *rrdset_index_find(RRDHOST *host, const char *id, uint32_t hash) {
RRDSET tmp;
strncpyz(tmp.id, id, RRD_ID_LENGTH_MAX);
tmp.hash = (hash)?hash:simple_hash(tmp.id);
return (RRDSET *)avl_search_lock(&(host->rrdset_root_index), (avl_t *) &tmp);
}
// ----------------------------------------------------------------------------
// RRDSET name index
#define rrdset_from_avlname(avlname_ptr) ((RRDSET *)((avlname_ptr) - offsetof(RRDSET, avlname)))
int rrdset_compare_name(void* a, void* b) {
RRDSET *A = rrdset_from_avlname(a);
RRDSET *B = rrdset_from_avlname(b);
// fprintf(stderr, "COMPARING: %s with %s\n", A->name, B->name);
if(A->hash_name < B->hash_name) return -1;
else if(A->hash_name > B->hash_name) return 1;
else return strcmp(A->name, B->name);
}
RRDSET *rrdset_index_add_name(RRDHOST *host, RRDSET *st) {
void *result;
// fprintf(stderr, "ADDING: %s (name: %s)\n", st->id, st->name);
result = avl_insert_lock(&host->rrdset_root_index_name, (avl_t *) (&st->avlname));
if(result) return rrdset_from_avlname(result);
return NULL;
}
RRDSET *rrdset_index_del_name(RRDHOST *host, RRDSET *st) {
void *result;
// fprintf(stderr, "DELETING: %s (name: %s)\n", st->id, st->name);
result = (RRDSET *)avl_remove_lock(&((host)->rrdset_root_index_name), (avl_t *)(&st->avlname));
if(result) return rrdset_from_avlname(result);
return NULL;
}
// ----------------------------------------------------------------------------
// RRDSET - find charts
static inline RRDSET *rrdset_index_find_name(RRDHOST *host, const char *name, uint32_t hash) {
void *result = NULL;
RRDSET tmp;
tmp.name = name;
tmp.hash_name = (hash)?hash:simple_hash(tmp.name);
result = avl_search_lock(&host->rrdset_root_index_name, (avl_t *) (&(tmp.avlname)));
if(result) return rrdset_from_avlname(result);
return NULL;
}
inline RRDSET *rrdset_find(RRDHOST *host, const char *id) {
debug(D_RRD_CALLS, "rrdset_find() for chart '%s' in host '%s'", id, host->hostname);
RRDSET *st = rrdset_index_find(host, id, 0);
return(st);
}
inline RRDSET *rrdset_find_bytype(RRDHOST *host, const char *type, const char *id) {
debug(D_RRD_CALLS, "rrdset_find_bytype() for chart '%s.%s' in host '%s'", type, id, host->hostname);
char buf[RRD_ID_LENGTH_MAX + 1];
strncpyz(buf, type, RRD_ID_LENGTH_MAX - 1);
strcat(buf, ".");
int len = (int) strlen(buf);
strncpyz(&buf[len], id, (size_t) (RRD_ID_LENGTH_MAX - len));
return(rrdset_find(host, buf));
}
inline RRDSET *rrdset_find_byname(RRDHOST *host, const char *name) {
debug(D_RRD_CALLS, "rrdset_find_byname() for chart '%s' in host '%s'", name, host->hostname);
RRDSET *st = rrdset_index_find_name(host, name, 0);
return(st);
}
// ----------------------------------------------------------------------------
// RRDSET - rename charts
char *rrdset_strncpyz_name(char *to, const char *from, size_t length) {
char c, *p = to;
while (length-- && (c = *from++)) {
if(c != '.' && c != '-' && !isalnum(c))
c = '_';
*p++ = c;
}
*p = '\0';
return to;
}
int rrdset_set_name(RRDSET *st, const char *name) {
if(unlikely(st->name && !strcmp(st->name, name)))
return 1;
RRDHOST *host = st->rrdhost;
debug(D_RRD_CALLS, "rrdset_set_name() old: '%s', new: '%s'", st->name?st->name:"", name);
char full_name[RRD_ID_LENGTH_MAX + 1];
char sanitized_name[CONFIG_MAX_VALUE + 1];
char new_name[CONFIG_MAX_VALUE + 1];
snprintfz(full_name, RRD_ID_LENGTH_MAX, "%s.%s", st->type, name);
rrdset_strncpyz_name(sanitized_name, full_name, CONFIG_MAX_VALUE);
strncpyz(new_name, sanitized_name, CONFIG_MAX_VALUE);
if(rrdset_index_find_name(host, new_name, 0)) {
debug(D_RRD_CALLS, "RRDSET: chart name '%s' on host '%s' already exists.", new_name, host->hostname);
if(!strcmp(st->id, full_name) && !st->name) {
unsigned i = 1;
do {
snprintfz(new_name, CONFIG_MAX_VALUE, "%s_%u", sanitized_name, i);
i++;
} while (rrdset_index_find_name(host, new_name, 0));
info("RRDSET: using name '%s' for chart '%s' on host '%s'.", new_name, full_name, host->hostname);
} else {
return 0;
}
}
if(st->name) {
rrdset_index_del_name(host, st);
st->name = strdupz(new_name);
st->hash_name = simple_hash(st->name);
rrdsetvar_rename_all(st);
}
else {
st->name = strdupz(new_name);
st->hash_name = simple_hash(st->name);
}
rrdset_wrlock(st);
RRDDIM *rd;
rrddim_foreach_write(rd, st)
rrddimvar_rename_all(rd);
rrdset_unlock(st);
if(unlikely(rrdset_index_add_name(host, st) != st))
error("RRDSET: INTERNAL ERROR: attempted to index duplicate chart name '%s'", st->name);
rrdset_flag_clear(st, RRDSET_FLAG_EXPORTING_SEND);
rrdset_flag_clear(st, RRDSET_FLAG_EXPORTING_IGNORE);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_SEND);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_IGNORE);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
return 2;
}
inline void rrdset_is_obsolete(RRDSET *st) {
if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_ARCHIVED))) {
info("Cannot obsolete already archived chart %s", st->name);
return;
}
if(unlikely(!(rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE)))) {
rrdset_flag_set(st, RRDSET_FLAG_OBSOLETE);
st->rrdhost->obsolete_charts_count++;
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
// the chart will not get more updates (data collection)
// so, we have to push its definition now
rrdset_push_chart_definition_now(st);
}
}
inline void rrdset_isnot_obsolete(RRDSET *st) {
if(unlikely((rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE)))) {
rrdset_flag_clear(st, RRDSET_FLAG_OBSOLETE);
st->rrdhost->obsolete_charts_count--;
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
// the chart will be pushed upstream automatically
// due to data collection
}
}
inline void rrdset_update_heterogeneous_flag(RRDSET *st) {
RRDHOST *host = st->rrdhost;
(void)host;
RRDDIM *rd;
rrdset_flag_clear(st, RRDSET_FLAG_HOMOGENEOUS_CHECK);
RRD_ALGORITHM algorithm = st->dimensions->algorithm;
collected_number multiplier = ABS(st->dimensions->multiplier);
collected_number divisor = ABS(st->dimensions->divisor);
rrddim_foreach_read(rd, st) {
if(algorithm != rd->algorithm || multiplier != ABS(rd->multiplier) || 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(algorithm),
rd->multiplier, multiplier,
rd->divisor, divisor
);
#endif
rrdset_flag_set(st, RRDSET_FLAG_HETEROGENEOUS);
}
return;
}
}
rrdset_flag_clear(st, RRDSET_FLAG_HETEROGENEOUS);
}
// ----------------------------------------------------------------------------
// RRDSET - reset a chart
void rrdset_reset(RRDSET *st) {
debug(D_RRD_CALLS, "rrdset_reset() %s", st->name);
st->last_collected_time.tv_sec = 0;
st->last_collected_time.tv_usec = 0;
st->last_updated.tv_sec = 0;
st->last_updated.tv_usec = 0;
st->current_entry = 0;
st->counter = 0;
st->counter_done = 0;
st->rrddim_page_alignment = 0;
RRDDIM *rd;
rrddim_foreach_read(rd, st) {
rd->last_collected_time.tv_sec = 0;
rd->last_collected_time.tv_usec = 0;
rd->collections_counter = 0;
// memset(rd->values, 0, rd->entries * sizeof(storage_number));
#ifdef ENABLE_DBENGINE
if (RRD_MEMORY_MODE_DBENGINE == st->rrd_memory_mode && !rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED)) {
rrdeng_store_metric_flush_current_page(rd);
}
#endif
}
}
// ----------------------------------------------------------------------------
// RRDSET - helpers for rrdset_create()
inline long align_entries_to_pagesize(RRD_MEMORY_MODE mode, long entries) {
if(mode == RRD_MEMORY_MODE_DBENGINE) return 0;
if(mode == RRD_MEMORY_MODE_NONE) return 5;
if(entries < 5) entries = 5;
if(entries > RRD_HISTORY_ENTRIES_MAX) entries = RRD_HISTORY_ENTRIES_MAX;
if(mode == RRD_MEMORY_MODE_MAP || mode == RRD_MEMORY_MODE_SAVE || mode == RRD_MEMORY_MODE_RAM) {
long header_size = 0;
if(mode == RRD_MEMORY_MODE_MAP || mode == RRD_MEMORY_MODE_SAVE)
header_size = (long)rrddim_memory_file_header_size();
long page = (long)sysconf(_SC_PAGESIZE);
long size = (long)(header_size + entries * sizeof(storage_number));
if (unlikely(size % page)) {
size -= (size % page);
size += page;
long n = (long)((size - header_size) / sizeof(storage_number));
return n;
}
}
return entries;
}
static inline void last_collected_time_align(RRDSET *st) {
st->last_collected_time.tv_sec -= st->last_collected_time.tv_sec % st->update_every;
if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_STORE_FIRST)))
st->last_collected_time.tv_usec = 0;
else
st->last_collected_time.tv_usec = 500000;
}
static inline void last_updated_time_align(RRDSET *st) {
st->last_updated.tv_sec -= st->last_updated.tv_sec % st->update_every;
st->last_updated.tv_usec = 0;
}
// ----------------------------------------------------------------------------
// RRDSET - free a chart
void rrdset_free(RRDSET *st) {
if(unlikely(!st)) return;
RRDHOST *host = st->rrdhost;
rrdhost_check_wrlock(host); // make sure we have a write lock on the host
rrdset_wrlock(st); // lock this RRDSET
// info("Removing chart '%s' ('%s')", st->id, st->name);
// ------------------------------------------------------------------------
// remove it from the indexes
if(unlikely(rrdset_index_del(host, st) != st))
error("RRDSET: INTERNAL ERROR: attempt to remove from index chart '%s', removed a different chart.", st->id);
rrdset_index_del_name(host, st);
// ------------------------------------------------------------------------
// free its children structures
freez(st->exporting_flags);
while(st->variables) rrdsetvar_free(st->variables);
// while(st->alarms) rrdsetcalc_unlink(st->alarms);
/* We must free all connected alarms here in case this has been an ephemeral chart whose alarm was
* created by a template. This leads to an effective memory leak, which cannot be detected since the
* alarms will still be connected to the host, and freed during shutdown. */
while(st->alarms) rrdcalc_unlink_and_free(st->rrdhost, st->alarms);
while(st->dimensions) rrddim_free(st, st->dimensions);
rrdfamily_free(host, st->rrdfamily);
debug(D_RRD_CALLS, "RRDSET: Cleaning up remaining chart variables for host '%s', chart '%s'", host->hostname, st->id);
rrdvar_free_remaining_variables(host, &st->rrdvar_root_index);
// ------------------------------------------------------------------------
// unlink it from the host
if(st == host->rrdset_root) {
host->rrdset_root = st->next;
}
else {
// find the previous one
RRDSET *s;
for(s = host->rrdset_root; s && s->next != st ; s = s->next) ;
// bypass it
if(s) s->next = st->next;
else error("Request to free RRDSET '%s': cannot find it under host '%s'", st->id, host->hostname);
}
rrdset_unlock(st);
// ------------------------------------------------------------------------
// free it
netdata_rwlock_destroy(&st->rrdset_rwlock);
// free directly allocated members
freez((void *)st->name);
freez(st->type);
freez(st->family);
freez(st->title);
freez(st->units);
freez(st->context);
freez(st->cache_dir);
freez(st->plugin_name);
freez(st->module_name);
freez(st->state->old_title);
freez(st->state->old_units);
freez(st->state->old_context);
rrdlabels_destroy(st->state->chart_labels);
freez(st->state);
freez(st->chart_uuid);
rrdset_memory_file_free(st);
freez(st);
}
void rrdset_save(RRDSET *st) {
rrdset_check_rdlock(st);
rrdset_memory_file_save(st);
RRDDIM *rd;
rrddim_foreach_read(rd, st)
rrddim_memory_file_save(rd);
}
void rrdset_delete(RRDSET *st) {
RRDDIM *rd;
rrdset_check_rdlock(st);
info("Deleting chart '%s' ('%s') from disk...", st->id, st->name);
if(st->rrd_memory_mode == RRD_MEMORY_MODE_SAVE || st->rrd_memory_mode == RRD_MEMORY_MODE_MAP) {
const char *cache_filename = rrdset_cache_filename(st);
if(cache_filename) {
info("Deleting chart header file '%s'.", cache_filename);
if (unlikely(unlink(cache_filename) == -1))
error("Cannot delete chart header file '%s'", cache_filename);
}
else
error("Cannot find the cache filename of chart '%s'", st->id);
}
rrddim_foreach_read(rd, st) {
const char *cache_filename = rrddim_cache_filename(rd);
if(!cache_filename) continue;
info("Deleting dimension file '%s'.", cache_filename);
if(unlikely(unlink(cache_filename) == -1))
error("Cannot delete dimension file '%s'", cache_filename);
}
recursively_delete_dir(st->cache_dir, "left-over chart");
}
void rrdset_delete_obsolete_dimensions(RRDSET *st) {
RRDDIM *rd;
rrdset_check_rdlock(st);
info("Deleting dimensions of chart '%s' ('%s') from disk...", st->id, st->name);
rrddim_foreach_read(rd, st) {
if(rrddim_flag_check(rd, RRDDIM_FLAG_OBSOLETE)) {
const char *cache_filename = rrddim_cache_filename(rd);
if(!cache_filename) continue;
info("Deleting dimension file '%s'.", cache_filename);
if(unlikely(unlink(cache_filename) == -1))
error("Cannot delete dimension file '%s'", cache_filename);
}
}
}
// ----------------------------------------------------------------------------
// RRDSET - create a chart
static inline RRDSET *rrdset_find_on_create(RRDHOST *host, const char *fullid) {
RRDSET *st = rrdset_find(host, fullid);
if(unlikely(st)) {
rrdset_isnot_obsolete(st);
debug(D_RRD_CALLS, "RRDSET '%s', already exists.", fullid);
return st;
}
return NULL;
}
RRDSET *rrdset_create_custom(
RRDHOST *host
, const char *type
, const char *id
, const char *name
, const char *family
, const char *context
, const char *title
, const char *units
, const char *plugin
, const char *module
, long priority
, int update_every
, RRDSET_TYPE chart_type
, RRD_MEMORY_MODE memory_mode
, long history_entries
) {
if(!type || !type[0]) {
fatal("Cannot create rrd stats without a type: id '%s', name '%s', family '%s', context '%s', title '%s', units '%s', plugin '%s', module '%s'."
, (id && *id)?id:"<unset>"
, (name && *name)?name:"<unset>"
, (family && *family)?family:"<unset>"
, (context && *context)?context:"<unset>"
, (title && *title)?title:"<unset>"
, (units && *units)?units:"<unset>"
, (plugin && *plugin)?plugin:"<unset>"
, (module && *module)?module:"<unset>"
);
return NULL;
}
if(!id || !id[0]) {
fatal("Cannot create rrd stats without an id: type '%s', name '%s', family '%s', context '%s', title '%s', units '%s', plugin '%s', module '%s'."
, type
, (name && *name)?name:"<unset>"
, (family && *family)?family:"<unset>"
, (context && *context)?context:"<unset>"
, (title && *title)?title:"<unset>"
, (units && *units)?units:"<unset>"
, (plugin && *plugin)?plugin:"<unset>"
, (module && *module)?module:"<unset>"
);
return NULL;
}
if (host != localhost) {
host->senders_last_chart_command = now_realtime_sec();
}
// ------------------------------------------------------------------------
// check if it already exists
char fullid[RRD_ID_LENGTH_MAX + 1];
snprintfz(fullid, RRD_ID_LENGTH_MAX, "%s.%s", type, id);
int changed_from_archived_to_active = 0;
RRDSET *st = rrdset_find_on_create(host, fullid);
if (st) {
int mark_rebuild = 0;
if (rrdset_flag_check(st, RRDSET_FLAG_ARCHIVED)) {
rrdset_flag_clear(st, RRDSET_FLAG_ARCHIVED);
changed_from_archived_to_active = 1;
mark_rebuild |= META_CHART_ACTIVATED;
}
char *old_plugin = NULL, *old_module = NULL, *old_title = NULL, *old_context = NULL,
*old_title_v = NULL, *old_context_v = NULL, *old_units_v = NULL, *old_units = NULL;
int rc;
if(unlikely(name))
rc = rrdset_set_name(st, name);
else
rc = rrdset_set_name(st, id);
if (rc == 2)
mark_rebuild |= META_CHART_UPDATED;
if (unlikely(st->priority != priority)) {
st->priority = priority;
mark_rebuild |= META_CHART_UPDATED;
}
if (unlikely(st->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE && st->update_every != update_every)) {
st->update_every = update_every;
mark_rebuild |= META_CHART_UPDATED;
}
if (plugin && st->plugin_name) {
if (unlikely(strcmp(plugin, st->plugin_name))) {
old_plugin = st->plugin_name;
st->plugin_name = strdupz(plugin);
mark_rebuild |= META_PLUGIN_UPDATED;
}
} else {
if (plugin != st->plugin_name) { // one is NULL?
old_plugin = st->plugin_name;
st->plugin_name = plugin ? strdupz(plugin) : NULL;
mark_rebuild |= META_PLUGIN_UPDATED;
}
}
if (module && st->module_name) {
if (unlikely(strcmp(module, st->module_name))) {
old_module = st->module_name;
st->module_name = strdupz(module);
mark_rebuild |= META_MODULE_UPDATED;
}
} else {
if (module != st->module_name) {
if (st->module_name && *st->module_name) {
old_module = st->module_name;
st->module_name = module ? strdupz(module) : NULL;
mark_rebuild |= META_MODULE_UPDATED;
}
}
}
if (unlikely(title && st->state->old_title && strcmp(st->state->old_title, title))) {
char *new_title = strdupz(title);
old_title_v = st->state->old_title;
st->state->old_title = strdupz(title);
json_fix_string(new_title);
old_title = st->title;
st->title = new_title;
mark_rebuild |= META_CHART_UPDATED;
}
if (unlikely(units && st->state->old_units && strcmp(st->state->old_units, units))) {
char *new_units = strdupz(units);
old_units_v = st->state->old_units;
st->state->old_units = strdupz(units);
json_fix_string(new_units);
old_units= st->units;
st->units = new_units;
mark_rebuild |= META_CHART_UPDATED;
}
if (st->chart_type != chart_type) {
st->chart_type = chart_type;
mark_rebuild |= META_CHART_UPDATED;
}
if (unlikely(context && st->state->old_context && strcmp(st->state->old_context, context))) {
char *new_context = strdupz(context);
old_context_v = st->state->old_context;
st->state->old_context = strdupz(context);
json_fix_string(new_context);
old_context = st->context;
st->context = new_context;
st->hash_context = simple_hash(st->context);
mark_rebuild |= META_CHART_UPDATED;
}
if (mark_rebuild) {
rrdset_flag_clear(st, RRDSET_FLAG_ACLK);
freez(old_plugin);
freez(old_module);
freez(old_title);
freez(old_units);
freez(old_context);
freez(old_title_v);
freez(old_units_v);
freez(old_context_v);
if (mark_rebuild != META_CHART_ACTIVATED) {
info("Collector updated metadata for chart %s", st->id);
sched_yield();
}
}
if (mark_rebuild & (META_CHART_UPDATED | META_PLUGIN_UPDATED | META_MODULE_UPDATED)) {
debug(D_METADATALOG, "CHART [%s] metadata updated", st->id);
int rc = update_chart_metadata(st->chart_uuid, st, id, name);
if (unlikely(rc))
error_report("Failed to update chart metadata in the database");
if (!changed_from_archived_to_active) {
rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
}
}
/* Fall-through during switch from archived to active so that the host lock is taken and health is linked */
if (!changed_from_archived_to_active)
return st;
}
rrdhost_wrlock(host);
st = rrdset_find_on_create(host, fullid);
if(st) {
if (changed_from_archived_to_active) {
rrdset_flag_clear(st, RRDSET_FLAG_ARCHIVED);
rrdsetvar_create(st, "last_collected_t", RRDVAR_TYPE_TIME_T, &st->last_collected_time.tv_sec, RRDVAR_OPTION_DEFAULT);
rrdsetvar_create(st, "collected_total_raw", RRDVAR_TYPE_TOTAL, &st->last_collected_total, RRDVAR_OPTION_DEFAULT);
rrdsetvar_create(st, "green", RRDVAR_TYPE_CALCULATED, &st->green, RRDVAR_OPTION_DEFAULT);
rrdsetvar_create(st, "red", RRDVAR_TYPE_CALCULATED, &st->red, RRDVAR_OPTION_DEFAULT);
rrdsetvar_create(st, "update_every", RRDVAR_TYPE_INT, &st->update_every, RRDVAR_OPTION_DEFAULT);
rrdsetcalc_link_matching(st);
rrdcalctemplate_link_matching(st);
}
rrdhost_unlock(host);
rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
return st;
}
// ------------------------------------------------------------------------
// get the options from the config, we need to create it
long entries = 5;
if (memory_mode != RRD_MEMORY_MODE_DBENGINE)
entries = align_entries_to_pagesize(memory_mode, history_entries);
char *cache_dir = rrdset_cache_dir(host, fullid);
// ------------------------------------------------------------------------
// load it or allocate it
debug(D_RRD_CALLS, "Creating RRD_STATS for '%s.%s'.", type, id);
st = callocz(1, sizeof(RRDSET));
st->state = callocz(1, sizeof(*st->state));
strcpy(st->id, fullid);
st->hash = simple_hash(st->id);
st->rrdhost = host;
st->cache_dir = cache_dir;
st->entries = entries;
st->update_every = update_every;
if(memory_mode == RRD_MEMORY_MODE_SAVE || memory_mode == RRD_MEMORY_MODE_MAP) {
if(!rrdset_memory_load_or_create_map_save(st, memory_mode)) {
info("Failed to use memory mode %s for chart '%s', falling back to ram", (memory_mode == RRD_MEMORY_MODE_MAP)?"map":"save", st->name);
memory_mode = RRD_MEMORY_MODE_RAM;
}
}
st->rrd_memory_mode = memory_mode;
st->plugin_name = plugin?strdupz(plugin):NULL;
st->module_name = module?strdupz(module):NULL;
st->chart_type = chart_type;
st->type = strdupz(type);
st->family = family ? strdupz(family) : strdupz(st->type);
json_fix_string(st->family);
st->state->is_ar_chart = strcmp(st->id, ML_ANOMALY_RATES_CHART_ID) == 0;
st->units = units ? strdupz(units) : strdupz("");
st->state->old_units = strdupz(st->units);
json_fix_string(st->units);
st->context = context ? strdupz(context) : strdupz(st->id);
st->state->old_context = strdupz(st->context);
json_fix_string(st->context);
st->hash_context = simple_hash(st->context);
st->priority = priority;
rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
st->green = NAN;
st->red = NAN;
st->gap_when_lost_iterations_above = (int) (gap_when_lost_iterations_above + 2);
avl_init_lock(&st->dimensions_index, rrddim_compare);
avl_init_lock(&st->rrdvar_root_index, rrdvar_compare);
netdata_rwlock_init(&st->rrdset_rwlock);
st->state->chart_labels = rrdlabels_create();
if(name && *name && rrdset_set_name(st, name))
// we did set the name
;
else
// could not use the name, use the id
rrdset_set_name(st, id);
st->title = strdupz(title);
st->state->old_title = strdupz(st->title);
json_fix_string(st->title);
st->rrdfamily = rrdfamily_create(host, st->family);
st->next = host->rrdset_root;
host->rrdset_root = st;
if(host->health_enabled) {
rrdsetvar_create(st, "last_collected_t", RRDVAR_TYPE_TIME_T, &st->last_collected_time.tv_sec, RRDVAR_OPTION_DEFAULT);
rrdsetvar_create(st, "collected_total_raw", RRDVAR_TYPE_TOTAL, &st->last_collected_total, RRDVAR_OPTION_DEFAULT);
rrdsetvar_create(st, "green", RRDVAR_TYPE_CALCULATED, &st->green, RRDVAR_OPTION_DEFAULT);
rrdsetvar_create(st, "red", RRDVAR_TYPE_CALCULATED, &st->red, RRDVAR_OPTION_DEFAULT);
rrdsetvar_create(st, "update_every", RRDVAR_TYPE_INT, &st->update_every, RRDVAR_OPTION_DEFAULT);
}
if(unlikely(rrdset_index_add(host, st) != st))
error("RRDSET: INTERNAL ERROR: attempt to index duplicate chart '%s'", st->id);
rrdsetcalc_link_matching(st);
rrdcalctemplate_link_matching(st);
st->chart_uuid = find_chart_uuid(host, type, id, name);
if (unlikely(!st->chart_uuid))
st->chart_uuid = create_chart_uuid(st, id, name);
else
update_chart_metadata(st->chart_uuid, st, id, name);
store_active_chart(st->chart_uuid);
compute_chart_hash(st);
rrdhost_unlock(host);
return(st);
}
// ----------------------------------------------------------------------------
// RRDSET - data collection iteration control
inline void rrdset_next_usec_unfiltered(RRDSET *st, usec_t microseconds) {
if(unlikely(!st->last_collected_time.tv_sec || !microseconds || (rrdset_flag_check(st, RRDSET_FLAG_SYNC_CLOCK)))) {
// call the full next_usec() function
rrdset_next_usec(st, microseconds);
return;
}
st->usec_since_last_update = microseconds;
}
inline void rrdset_next_usec(RRDSET *st, usec_t microseconds) {
struct timeval now;
now_realtime_timeval(&now);
#ifdef NETDATA_INTERNAL_CHECKS
char *discard_reason = NULL;
usec_t discarded = microseconds;
#endif
if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_SYNC_CLOCK))) {
// the chart needs to be re-synced to current time
rrdset_flag_clear(st, RRDSET_FLAG_SYNC_CLOCK);
// discard the microseconds supplied
microseconds = 0;
#ifdef NETDATA_INTERNAL_CHECKS
if(!discard_reason) discard_reason = "SYNC CLOCK FLAG";
#endif
}
if(unlikely(!st->last_collected_time.tv_sec)) {
// the first entry
microseconds = st->update_every * USEC_PER_SEC;
#ifdef NETDATA_INTERNAL_CHECKS
if(!discard_reason) discard_reason = "FIRST DATA COLLECTION";
#endif
}
else if(unlikely(!microseconds)) {
// no dt given by the plugin
microseconds = dt_usec(&now, &st->last_collected_time);
#ifdef NETDATA_INTERNAL_CHECKS
if(!discard_reason) discard_reason = "NO USEC GIVEN BY COLLECTOR";
#endif
}
else {
// microseconds has the time since the last collection
susec_t since_last_usec = dt_usec_signed(&now, &st->last_collected_time);
if(unlikely(since_last_usec < 0)) {
// oops! the database is in the future
#ifdef NETDATA_INTERNAL_CHECKS
info("RRD database for chart '%s' on host '%s' is %0.5" NETDATA_DOUBLE_MODIFIER
" secs in the future (counter #%zu, update #%zu). Adjusting it to current time.", st->id, st->rrdhost->hostname, (NETDATA_DOUBLE)-since_last_usec / USEC_PER_SEC, st->counter, st->counter_done);
#endif
st->last_collected_time.tv_sec = now.tv_sec - st->update_every;
st->last_collected_time.tv_usec = now.tv_usec;
last_collected_time_align(st);
st->last_updated.tv_sec = now.tv_sec - st->update_every;
st->last_updated.tv_usec = now.tv_usec;
last_updated_time_align(st);
microseconds = st->update_every * USEC_PER_SEC;
#ifdef NETDATA_INTERNAL_CHECKS
if(!discard_reason) discard_reason = "COLLECTION TIME IN FUTURE";
#endif
}
else if(unlikely((usec_t)since_last_usec > (usec_t)(st->update_every * 5 * USEC_PER_SEC))) {
// oops! the database is too far behind
#ifdef NETDATA_INTERNAL_CHECKS
info("RRD database for chart '%s' on host '%s' is %0.5" NETDATA_DOUBLE_MODIFIER
" secs in the past (counter #%zu, update #%zu). Adjusting it to current time.", st->id, st->rrdhost->hostname, (NETDATA_DOUBLE)since_last_usec / USEC_PER_SEC, st->counter, st->counter_done);
#endif
microseconds = (usec_t)since_last_usec;
#ifdef NETDATA_INTERNAL_CHECKS
if(!discard_reason) discard_reason = "COLLECTION TIME TOO FAR IN THE PAST";
#endif
}
#ifdef NETDATA_INTERNAL_CHECKS
if(since_last_usec > 0 && (susec_t)microseconds < since_last_usec) {
static __thread susec_t min_delta = USEC_PER_SEC * 3600, permanent_min_delta = 0;
static __thread time_t last_t = 0;
// the first time initialize it so that it will make the check later
if(last_t == 0) last_t = now.tv_sec + 60;
susec_t delta = since_last_usec - (susec_t)microseconds;
if(delta < min_delta) min_delta = delta;
if(now.tv_sec >= last_t + 60) {
last_t = now.tv_sec;
if(min_delta > permanent_min_delta) {
info("MINIMUM MICROSECONDS DELTA of thread %d increased from %lld to %lld (+%lld)", gettid(), permanent_min_delta, min_delta, min_delta - permanent_min_delta);
permanent_min_delta = min_delta;
}
min_delta = USEC_PER_SEC * 3600;
}
}
#endif
}
#ifdef NETDATA_INTERNAL_CHECKS
debug(D_RRD_CALLS, "rrdset_next_usec() for chart %s with microseconds %llu", st->name, microseconds);
rrdset_debug(st, "NEXT: %llu microseconds", microseconds);
if(discarded && discarded != microseconds)
info("host '%s', chart '%s': discarded data collection time of %llu usec, replaced with %llu usec, reason: '%s'", st->rrdhost->hostname, st->id, discarded, microseconds, discard_reason?discard_reason:"UNDEFINED");
#endif
st->usec_since_last_update = microseconds;
}
// ----------------------------------------------------------------------------
// RRDSET - process the collected values for all dimensions of a chart
static inline usec_t rrdset_init_last_collected_time(RRDSET *st) {
now_realtime_timeval(&st->last_collected_time);
last_collected_time_align(st);
usec_t last_collect_ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec;
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "initialized last collected time to %0.3" NETDATA_DOUBLE_MODIFIER, (NETDATA_DOUBLE)last_collect_ut / USEC_PER_SEC);
#endif
return last_collect_ut;
}
static inline usec_t rrdset_update_last_collected_time(RRDSET *st) {
usec_t last_collect_ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec;
usec_t ut = last_collect_ut + st->usec_since_last_update;
st->last_collected_time.tv_sec = (time_t) (ut / USEC_PER_SEC);
st->last_collected_time.tv_usec = (suseconds_t) (ut % USEC_PER_SEC);
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "updated last collected time to %0.3" NETDATA_DOUBLE_MODIFIER, (NETDATA_DOUBLE)last_collect_ut / USEC_PER_SEC);
#endif
return last_collect_ut;
}
static inline usec_t rrdset_init_last_updated_time(RRDSET *st) {
// copy the last collected time to last updated time
st->last_updated.tv_sec = st->last_collected_time.tv_sec;
st->last_updated.tv_usec = st->last_collected_time.tv_usec;
if(rrdset_flag_check(st, RRDSET_FLAG_STORE_FIRST))
st->last_updated.tv_sec -= st->update_every;
last_updated_time_align(st);
usec_t last_updated_ut = st->last_updated.tv_sec * USEC_PER_SEC + st->last_updated.tv_usec;
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "initialized last updated time to %0.3" NETDATA_DOUBLE_MODIFIER, (NETDATA_DOUBLE)last_updated_ut / USEC_PER_SEC);
#endif
return last_updated_ut;
}
static inline size_t rrdset_done_interpolate(
RRDSET *st
, usec_t update_every_ut
, usec_t last_stored_ut
, usec_t next_store_ut
, usec_t last_collect_ut
, usec_t now_collect_ut
, char store_this_entry
, uint32_t has_reset_value
) {
RRDDIM *rd;
size_t stored_entries = 0; // the number of entries we have stored in the db, during this call to rrdset_done()
usec_t first_ut = last_stored_ut, last_ut = 0;
(void)first_ut;
ssize_t iterations = (ssize_t)((now_collect_ut - last_stored_ut) / (update_every_ut));
if((now_collect_ut % (update_every_ut)) == 0) iterations++;
size_t counter = st->counter;
long current_entry = st->current_entry;
SN_FLAGS storage_flags = SN_DEFAULT_FLAGS;
if (has_reset_value)
storage_flags |= SN_EXISTS_RESET;
for( ; next_store_ut <= now_collect_ut ; last_collect_ut = next_store_ut, next_store_ut += update_every_ut, iterations-- ) {
#ifdef NETDATA_INTERNAL_CHECKS
if(iterations < 0) { error("INTERNAL CHECK: %s: iterations calculation wrapped! first_ut = %llu, last_stored_ut = %llu, next_store_ut = %llu, now_collect_ut = %llu", st->name, first_ut, last_stored_ut, next_store_ut, now_collect_ut); }
rrdset_debug(st, "last_stored_ut = %0.3" NETDATA_DOUBLE_MODIFIER " (last updated time)", (NETDATA_DOUBLE)last_stored_ut/USEC_PER_SEC);
rrdset_debug(st, "next_store_ut = %0.3" NETDATA_DOUBLE_MODIFIER " (next interpolation point)", (NETDATA_DOUBLE)next_store_ut/USEC_PER_SEC);
#endif
last_ut = next_store_ut;
rrddim_foreach_read(rd, st) {
if (rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED))
continue;
NETDATA_DOUBLE new_value;
switch(rd->algorithm) {
case RRD_ALGORITHM_INCREMENTAL:
new_value = (NETDATA_DOUBLE)
( rd->calculated_value
* (NETDATA_DOUBLE)(next_store_ut - last_collect_ut)
/ (NETDATA_DOUBLE)(now_collect_ut - last_collect_ut)
);
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: CALC2 INC " NETDATA_DOUBLE_FORMAT " = "
NETDATA_DOUBLE_FORMAT
" * (%llu - %llu)"
" / (%llu - %llu)"
, rd->name
, new_value
, rd->calculated_value
, next_store_ut, last_collect_ut
, now_collect_ut, last_collect_ut
);
#endif
rd->calculated_value -= new_value;
new_value += rd->last_calculated_value;
rd->last_calculated_value = 0;
new_value /= (NETDATA_DOUBLE)st->update_every;
if(unlikely(next_store_ut - last_stored_ut < update_every_ut)) {
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: COLLECTION POINT IS SHORT " NETDATA_DOUBLE_FORMAT " - EXTRAPOLATING",
rd->name
, (NETDATA_DOUBLE)(next_store_ut - last_stored_ut)
);
#endif
new_value = new_value * (NETDATA_DOUBLE)(st->update_every * USEC_PER_SEC) / (NETDATA_DOUBLE)(next_store_ut - last_stored_ut);
}
break;
case RRD_ALGORITHM_ABSOLUTE:
case RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL:
case RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL:
default:
if(iterations == 1) {
// this is the last iteration
// do not interpolate
// just show the calculated value
new_value = rd->calculated_value;
}
else {
// we have missed an update
// interpolate in the middle values
new_value = (NETDATA_DOUBLE)
( ( (rd->calculated_value - rd->last_calculated_value)
* (NETDATA_DOUBLE)(next_store_ut - last_collect_ut)
/ (NETDATA_DOUBLE)(now_collect_ut - last_collect_ut)
)
+ rd->last_calculated_value
);
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: CALC2 DEF " NETDATA_DOUBLE_FORMAT " = ((("
"(" NETDATA_DOUBLE_FORMAT " - " NETDATA_DOUBLE_FORMAT ")"
" * %llu"
" / %llu) + " NETDATA_DOUBLE_FORMAT, rd->name
, new_value
, rd->calculated_value, rd->last_calculated_value
, (next_store_ut - first_ut)
, (now_collect_ut - first_ut), rd->last_calculated_value
);
#endif
}
break;
}
if(unlikely(!store_this_entry)) {
(void) ml_is_anomalous(rd, 0, false);
rd->state->collect_ops.store_metric(rd, next_store_ut, NAN, SN_EMPTY_SLOT);
continue;
}
if(likely(rd->updated && rd->collections_counter > 1 && iterations < st->gap_when_lost_iterations_above)) {
uint32_t dim_storage_flags = storage_flags;
if (ml_is_anomalous(rd, new_value, true)) {
// clear anomaly bit: 0 -> is anomalous, 1 -> not anomalous
dim_storage_flags &= ~ ((uint32_t) SN_ANOMALY_BIT);
}
rd->state->collect_ops.store_metric(rd, next_store_ut, new_value, dim_storage_flags);
rd->last_stored_value = new_value;
}
else {
(void) ml_is_anomalous(rd, 0, false);
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: STORE[%ld] = NON EXISTING "
, rd->name
, current_entry
);
#endif
rd->state->collect_ops.store_metric(rd, next_store_ut, NAN, SN_EMPTY_SLOT);
rd->last_stored_value = NAN;
}
stored_entries++;
}
// reset the storage flags for the next point, if any;
storage_flags = SN_DEFAULT_FLAGS;
st->counter = ++counter;
st->current_entry = current_entry = ((current_entry + 1) >= st->entries) ? 0 : current_entry + 1;
st->last_updated.tv_sec = (time_t) (last_ut / USEC_PER_SEC);
st->last_updated.tv_usec = 0;
last_stored_ut = next_store_ut;
}
/*
st->counter = counter;
st->current_entry = current_entry;
if(likely(last_ut)) {
st->last_updated.tv_sec = (time_t) (last_ut / USEC_PER_SEC);
st->last_updated.tv_usec = 0;
}
*/
return stored_entries;
}
static inline void rrdset_done_fill_the_gap(RRDSET *st) {
usec_t update_every_ut = st->update_every * USEC_PER_SEC;
usec_t now_collect_ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec;
long c = 0, entries = st->entries;
RRDDIM *rd;
rrddim_foreach_read(rd, st) {
usec_t next_store_ut = (st->last_updated.tv_sec + st->update_every) * USEC_PER_SEC;
long current_entry = st->current_entry;
for(c = 0; c < entries && next_store_ut <= now_collect_ut ; next_store_ut += update_every_ut, c++) {
rd->db[current_entry] = SN_EMPTY_SLOT;
current_entry = ((current_entry + 1) >= entries) ? 0 : current_entry + 1;
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: STORE[%ld] = NON EXISTING (FILLED THE GAP)", rd->name, current_entry);
#endif
}
}
if(c > 0) {
c--;
st->last_updated.tv_sec += c * st->update_every;
st->current_entry += c;
st->counter += c;
if(st->current_entry >= st->entries)
st->current_entry -= st->entries;
}
}
void rrdset_done(RRDSET *st) {
if(unlikely(netdata_exit)) return;
debug(D_RRD_CALLS, "rrdset_done() for chart %s", st->name);
RRDDIM *rd;
char
store_this_entry = 1, // boolean: 1 = store this entry, 0 = don't store this entry
first_entry = 0; // boolean: 1 = this is the first entry seen for this chart, 0 = all other entries
usec_t
last_collect_ut = 0, // the timestamp in microseconds, of the last collected value
now_collect_ut = 0, // the timestamp in microseconds, of this collected value (this is NOW)
last_stored_ut = 0, // the timestamp in microseconds, of the last stored entry in the db
next_store_ut = 0, // the timestamp in microseconds, of the next entry to store in the db
update_every_ut = st->update_every * USEC_PER_SEC; // st->update_every in microseconds
netdata_thread_disable_cancelability();
// a read lock is OK here
rrdset_rdlock(st);
#ifdef ENABLE_ACLK
if (likely(!st->state->is_ar_chart)) {
if (unlikely(!rrdset_flag_check(st, RRDSET_FLAG_ACLK))) {
if (likely(st->dimensions && st->counter_done && !queue_chart_to_aclk(st))) {
rrdset_flag_set(st, RRDSET_FLAG_ACLK);
}
}
}
#endif
if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE))) {
error("Chart '%s' has the OBSOLETE flag set, but it is collected.", st->id);
rrdset_isnot_obsolete(st);
}
// check if the chart has a long time to be updated
if(unlikely(st->usec_since_last_update > st->entries * update_every_ut &&
st->rrd_memory_mode != RRD_MEMORY_MODE_DBENGINE && st->rrd_memory_mode != RRD_MEMORY_MODE_NONE)) {
info("host '%s', chart %s: took too long to be updated (counter #%zu, update #%zu, %0.3" NETDATA_DOUBLE_MODIFIER
" secs). Resetting it.", st->rrdhost->hostname, st->name, st->counter, st->counter_done, (NETDATA_DOUBLE)st->usec_since_last_update / USEC_PER_SEC);
rrdset_reset(st);
st->usec_since_last_update = update_every_ut;
store_this_entry = 0;
first_entry = 1;
}
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "microseconds since last update: %llu", st->usec_since_last_update);
#endif
// set last_collected_time
if(unlikely(!st->last_collected_time.tv_sec)) {
// it is the first entry
// set the last_collected_time to now
last_collect_ut = rrdset_init_last_collected_time(st) - update_every_ut;
// the first entry should not be stored
store_this_entry = 0;
first_entry = 1;
}
else {
// it is not the first entry
// calculate the proper last_collected_time, using usec_since_last_update
last_collect_ut = rrdset_update_last_collected_time(st);
}
if (unlikely(st->rrd_memory_mode == RRD_MEMORY_MODE_NONE)) {
goto after_first_database_work;
}
// if this set has not been updated in the past
// we fake the last_update time to be = now - usec_since_last_update
if(unlikely(!st->last_updated.tv_sec)) {
// it has never been updated before
// set a fake last_updated, in the past using usec_since_last_update
rrdset_init_last_updated_time(st);
// the first entry should not be stored
store_this_entry = 0;
first_entry = 1;
}
// check if we will re-write the entire data set
if(unlikely(dt_usec(&st->last_collected_time, &st->last_updated) > st->entries * update_every_ut &&
st->rrd_memory_mode != RRD_MEMORY_MODE_DBENGINE)) {
info(
"%s: too old data (last updated at %"PRId64".%"PRId64", last collected at %"PRId64".%"PRId64"). "
"Resetting it. Will not store the next entry.",
st->name,
(int64_t)st->last_updated.tv_sec,
(int64_t)st->last_updated.tv_usec,
(int64_t)st->last_collected_time.tv_sec,
(int64_t)st->last_collected_time.tv_usec);
rrdset_reset(st);
rrdset_init_last_updated_time(st);
st->usec_since_last_update = update_every_ut;
// the first entry should not be stored
store_this_entry = 0;
first_entry = 1;
}
#ifdef ENABLE_DBENGINE
// check if we will re-write the entire page
if(unlikely(st->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE &&
dt_usec(&st->last_collected_time, &st->last_updated) > (RRDENG_BLOCK_SIZE / sizeof(storage_number)) * update_every_ut)) {
info(
"%s: too old data (last updated at %" PRId64 ".%" PRId64 ", last collected at %" PRId64 ".%" PRId64 "). "
"Resetting it. Will not store the next entry.",
st->name,
(int64_t)st->last_updated.tv_sec,
(int64_t)st->last_updated.tv_usec,
(int64_t)st->last_collected_time.tv_sec,
(int64_t)st->last_collected_time.tv_usec);
rrdset_reset(st);
rrdset_init_last_updated_time(st);
st->usec_since_last_update = update_every_ut;
// the first entry should not be stored
store_this_entry = 0;
first_entry = 1;
}
#endif
// these are the 3 variables that will help us in interpolation
// last_stored_ut = the last time we added a value to the storage
// now_collect_ut = the time the current value has been collected
// next_store_ut = the time of the next interpolation point
now_collect_ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec;
last_stored_ut = st->last_updated.tv_sec * USEC_PER_SEC + st->last_updated.tv_usec;
next_store_ut = (st->last_updated.tv_sec + st->update_every) * USEC_PER_SEC;
if(unlikely(!st->counter_done)) {
// if we have not collected metrics this session (st->counter_done == 0)
// and we have collected metrics for this chart in the past (st->counter != 0)
// fill the gap (the chart has been just loaded from disk)
if(unlikely(st->counter) && st->rrd_memory_mode != RRD_MEMORY_MODE_DBENGINE) {
// TODO this should be inside the storage engine
rrdset_done_fill_the_gap(st);
last_stored_ut = st->last_updated.tv_sec * USEC_PER_SEC + st->last_updated.tv_usec;
next_store_ut = (st->last_updated.tv_sec + st->update_every) * USEC_PER_SEC;
}
if (st->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
// set a fake last_updated to jump to current time
rrdset_init_last_updated_time(st);
last_stored_ut = st->last_updated.tv_sec * USEC_PER_SEC + st->last_updated.tv_usec;
next_store_ut = (st->last_updated.tv_sec + st->update_every) * USEC_PER_SEC;
}
if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_STORE_FIRST))) {
store_this_entry = 1;
last_collect_ut = next_store_ut - update_every_ut;
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "Fixed first entry.");
#endif
}
else {
store_this_entry = 0;
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "Will not store the next entry.");
#endif
}
}
after_first_database_work:
st->counter_done++;
if(unlikely(st->rrdhost->rrdpush_send_enabled))
rrdset_done_push(st);
if (unlikely(st->rrd_memory_mode == RRD_MEMORY_MODE_NONE)) {
goto after_second_database_work;
}
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "last_collect_ut = %0.3" NETDATA_DOUBLE_MODIFIER " (last collection time)", (NETDATA_DOUBLE)last_collect_ut/USEC_PER_SEC);
rrdset_debug(st, "now_collect_ut = %0.3" NETDATA_DOUBLE_MODIFIER " (current collection time)", (NETDATA_DOUBLE)now_collect_ut/USEC_PER_SEC);
rrdset_debug(st, "last_stored_ut = %0.3" NETDATA_DOUBLE_MODIFIER " (last updated time)", (NETDATA_DOUBLE)last_stored_ut/USEC_PER_SEC);
rrdset_debug(st, "next_store_ut = %0.3" NETDATA_DOUBLE_MODIFIER " (next interpolation point)", (NETDATA_DOUBLE)next_store_ut/USEC_PER_SEC);
#endif
// calculate totals and count the dimensions
int dimensions = 0;
st->collected_total = 0;
rrddim_foreach_read(rd, st) {
if (rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED))
continue;
dimensions++;
if(likely(rd->updated))
st->collected_total += rd->collected_value;
}
uint32_t has_reset_value = 0;
// process all dimensions to calculate their values
// based on the collected figures only
// at this stage we do not interpolate anything
rrddim_foreach_read(rd, st) {
if (rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED))
continue;
if(unlikely(!rd->updated)) {
rd->calculated_value = 0;
continue;
}
if(unlikely(rrddim_flag_check(rd, RRDDIM_FLAG_OBSOLETE))) {
error("Dimension %s in chart '%s' has the OBSOLETE flag set, but it is collected.", rd->name, st->id);
rrddim_isnot_obsolete(st, rd);
}
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: START "
" last_collected_value = " COLLECTED_NUMBER_FORMAT
" collected_value = " COLLECTED_NUMBER_FORMAT
" last_calculated_value = " NETDATA_DOUBLE_FORMAT
" calculated_value = " NETDATA_DOUBLE_FORMAT, rd->name
, rd->last_collected_value
, rd->collected_value
, rd->last_calculated_value
, rd->calculated_value
);
#endif
switch(rd->algorithm) {
case RRD_ALGORITHM_ABSOLUTE:
rd->calculated_value = (NETDATA_DOUBLE)rd->collected_value
* (NETDATA_DOUBLE)rd->multiplier
/ (NETDATA_DOUBLE)rd->divisor;
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: CALC ABS/ABS-NO-IN " NETDATA_DOUBLE_FORMAT " = "
COLLECTED_NUMBER_FORMAT
" * " NETDATA_DOUBLE_FORMAT
" / " NETDATA_DOUBLE_FORMAT, rd->name
, rd->calculated_value
, rd->collected_value
, (NETDATA_DOUBLE)rd->multiplier
, (NETDATA_DOUBLE)rd->divisor
);
#endif
break;
case RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL:
if(unlikely(!st->collected_total))
rd->calculated_value = 0;
else
// the percentage of the current value
// over the total of all dimensions
rd->calculated_value =
(NETDATA_DOUBLE)100
* (NETDATA_DOUBLE)rd->collected_value
/ (NETDATA_DOUBLE)st->collected_total;
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: CALC PCENT-ROW " NETDATA_DOUBLE_FORMAT " = 100"
" * " COLLECTED_NUMBER_FORMAT
" / " COLLECTED_NUMBER_FORMAT
, rd->name
, rd->calculated_value
, rd->collected_value
, st->collected_total
);
#endif
break;
case RRD_ALGORITHM_INCREMENTAL:
if(unlikely(rd->collections_counter <= 1)) {
rd->calculated_value = 0;
continue;
}
// If the new is smaller than the old (an overflow, or reset), set the old equal to the new
// to reset the calculation (it will give zero as the calculation for this second).
// It is imperative to set the comparison to uint64_t since type collected_number is signed and
// produces wrong results as far as incremental counters are concerned.
if(unlikely((uint64_t)rd->last_collected_value > (uint64_t)rd->collected_value)) {
debug(D_RRD_STATS, "%s.%s: RESET or OVERFLOW. Last collected value = " COLLECTED_NUMBER_FORMAT ", current = " COLLECTED_NUMBER_FORMAT
, st->name, rd->name
, rd->last_collected_value
, rd->collected_value);
if(!(rrddim_flag_check(rd, RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS)))
has_reset_value = 1;
uint64_t last = (uint64_t)rd->last_collected_value;
uint64_t new = (uint64_t)rd->collected_value;
uint64_t max = (uint64_t)rd->collected_value_max;
uint64_t cap = 0;
// Signed values are handled by exploiting two's complement which will produce positive deltas
if (max > 0x00000000FFFFFFFFULL)
cap = 0xFFFFFFFFFFFFFFFFULL; // handles signed and unsigned 64-bit counters
else
cap = 0x00000000FFFFFFFFULL; // handles signed and unsigned 32-bit counters
uint64_t delta = cap - last + new;
uint64_t max_acceptable_rate = (cap / 100) * MAX_INCREMENTAL_PERCENT_RATE;
// If the delta is less than the maximum acceptable rate and the previous value was near the cap
// then this is an overflow. There can be false positives such that a reset is detected as an
// overflow.
// TODO: remember recent history of rates and compare with current rate to reduce this chance.
if (delta < max_acceptable_rate) {
rd->calculated_value +=
(NETDATA_DOUBLE) delta
* (NETDATA_DOUBLE) rd->multiplier
/ (NETDATA_DOUBLE) rd->divisor;
} else {
// This is a reset. Any overflow with a rate greater than MAX_INCREMENTAL_PERCENT_RATE will also
// be detected as a reset instead.
rd->calculated_value += (NETDATA_DOUBLE)0;
}
}
else {
rd->calculated_value +=
(NETDATA_DOUBLE) (rd->collected_value - rd->last_collected_value)
* (NETDATA_DOUBLE) rd->multiplier
/ (NETDATA_DOUBLE) rd->divisor;
}
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: CALC INC PRE " NETDATA_DOUBLE_FORMAT " = ("
COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT
")"
" * " NETDATA_DOUBLE_FORMAT
" / " NETDATA_DOUBLE_FORMAT, rd->name
, rd->calculated_value
, rd->collected_value, rd->last_collected_value
, (NETDATA_DOUBLE)rd->multiplier
, (NETDATA_DOUBLE)rd->divisor
);
#endif
break;
case RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL:
if(unlikely(rd->collections_counter <= 1)) {
rd->calculated_value = 0;
continue;
}
// if the new is smaller than the old (an overflow, or reset), set the old equal to the new
// to reset the calculation (it will give zero as the calculation for this second)
if(unlikely(rd->last_collected_value > rd->collected_value)) {
debug(D_RRD_STATS, "%s.%s: RESET or OVERFLOW. Last collected value = " COLLECTED_NUMBER_FORMAT ", current = " COLLECTED_NUMBER_FORMAT
, st->name, rd->name
, rd->last_collected_value
, rd->collected_value
);
if(!(rrddim_flag_check(rd, RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS)))
has_reset_value = 1;
rd->last_collected_value = rd->collected_value;
}
// the percentage of the current increment
// over the increment of all dimensions together
if(unlikely(st->collected_total == st->last_collected_total))
rd->calculated_value = 0;
else
rd->calculated_value =
(NETDATA_DOUBLE)100
* (NETDATA_DOUBLE)(rd->collected_value - rd->last_collected_value)
/ (NETDATA_DOUBLE)(st->collected_total - st->last_collected_total);
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: CALC PCENT-DIFF " NETDATA_DOUBLE_FORMAT " = 100"
" * (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")"
" / (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")"
, rd->name
, rd->calculated_value
, rd->collected_value, rd->last_collected_value
, st->collected_total, st->last_collected_total
);
#endif
break;
default:
// make the default zero, to make sure
// it gets noticed when we add new types
rd->calculated_value = 0;
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: CALC " NETDATA_DOUBLE_FORMAT " = 0"
, rd->name
, rd->calculated_value
);
#endif
break;
}
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: PHASE2 "
" last_collected_value = " COLLECTED_NUMBER_FORMAT
" collected_value = " COLLECTED_NUMBER_FORMAT
" last_calculated_value = " NETDATA_DOUBLE_FORMAT
" calculated_value = " NETDATA_DOUBLE_FORMAT, rd->name
, rd->last_collected_value
, rd->collected_value
, rd->last_calculated_value
, rd->calculated_value
);
#endif
}
// at this point we have all the calculated values ready
// it is now time to interpolate values on a second boundary
#ifdef NETDATA_INTERNAL_CHECKS
if(unlikely(now_collect_ut < next_store_ut)) {
// this is collected in the same interpolation point
rrdset_debug(st, "THIS IS IN THE SAME INTERPOLATION POINT");
info("INTERNAL CHECK: host '%s', chart '%s' is collected in the same interpolation point: short by %llu microseconds", st->rrdhost->hostname, st->name, next_store_ut - now_collect_ut);
}
#endif
rrdset_done_interpolate(st
, update_every_ut
, last_stored_ut
, next_store_ut
, last_collect_ut
, now_collect_ut
, store_this_entry
, has_reset_value
);
after_second_database_work:
st->last_collected_total = st->collected_total;
#ifdef ENABLE_ACLK
time_t mark = now_realtime_sec();
#endif
rrddim_foreach_read(rd, st) {
if (rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED))
continue;
#ifdef ENABLE_ACLK
if (likely(!st->state->is_ar_chart)) {
if (!rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN) && likely(rrdset_flag_check(st, RRDSET_FLAG_ACLK)))
queue_dimension_to_aclk(rd, calc_dimension_liveness(rd, mark));
}
#endif
if(unlikely(!rd->updated))
continue;
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: setting last_collected_value (old: " COLLECTED_NUMBER_FORMAT ") to last_collected_value (new: " COLLECTED_NUMBER_FORMAT ")", rd->name, rd->last_collected_value, rd->collected_value);
#endif
rd->last_collected_value = rd->collected_value;
switch(rd->algorithm) {
case RRD_ALGORITHM_INCREMENTAL:
if(unlikely(!first_entry)) {
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: setting last_calculated_value (old: " NETDATA_DOUBLE_FORMAT
") to last_calculated_value (new: " NETDATA_DOUBLE_FORMAT ")", rd->name, rd->last_calculated_value + rd->calculated_value, rd->calculated_value);
#endif
rd->last_calculated_value += rd->calculated_value;
}
else {
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "THIS IS THE FIRST POINT");
#endif
}
break;
case RRD_ALGORITHM_ABSOLUTE:
case RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL:
case RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL:
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: setting last_calculated_value (old: " NETDATA_DOUBLE_FORMAT
") to last_calculated_value (new: " NETDATA_DOUBLE_FORMAT ")", rd->name, rd->last_calculated_value, rd->calculated_value);
#endif
rd->last_calculated_value = rd->calculated_value;
break;
}
rd->calculated_value = 0;
rd->collected_value = 0;
rd->updated = 0;
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: END "
" last_collected_value = " COLLECTED_NUMBER_FORMAT
" collected_value = " COLLECTED_NUMBER_FORMAT
" last_calculated_value = " NETDATA_DOUBLE_FORMAT
" calculated_value = " NETDATA_DOUBLE_FORMAT, rd->name
, rd->last_collected_value
, rd->collected_value
, rd->last_calculated_value
, rd->calculated_value
);
#endif
}
// ALL DONE ABOUT THE DATA UPDATE
// --------------------------------------------------------------------
if(unlikely(st->rrd_memory_mode == RRD_MEMORY_MODE_MAP)) {
// update the memory mapped files with the latest values
rrdset_memory_file_update(st);
rrddim_foreach_read(rd, st) {
rrddim_memory_file_update(rd);
}
}
// find if there are any obsolete dimensions
if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE_DIMENSIONS))) {
rrddim_foreach_read(rd, st)
if(unlikely(rrddim_flag_check(rd, RRDDIM_FLAG_OBSOLETE)))
break;
if(unlikely(rd)) {
time_t now = now_realtime_sec();
RRDDIM *last;
// there is a dimension to free
// upgrade our read lock to a write lock
rrdset_unlock(st);
rrdset_wrlock(st);
for( rd = st->dimensions, last = NULL ; likely(rd) ; ) {
if(unlikely(rrddim_flag_check(rd, RRDDIM_FLAG_OBSOLETE) && !rrddim_flag_check(rd, RRDDIM_FLAG_ACLK)
&& (rd->last_collected_time.tv_sec + rrdset_free_obsolete_time < now))) {
info("Removing obsolete dimension '%s' (%s) of '%s' (%s).", rd->name, rd->id, st->name, st->id);
const char *cache_filename = rrddim_cache_filename(rd);
if(cache_filename) {
info("Deleting dimension file '%s'.", cache_filename);
if (unlikely(unlink(cache_filename) == -1))
error("Cannot delete dimension file '%s'", cache_filename);
}
#ifdef ENABLE_DBENGINE
if (rd->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
rrddim_flag_set(rd, RRDDIM_FLAG_ARCHIVED);
while(rd->variables)
rrddimvar_free(rd->variables);
rrddim_flag_clear(rd, RRDDIM_FLAG_OBSOLETE);
/* only a collector can mark a chart as obsolete, so we must remove the reference */
uint8_t can_delete_metric = rd->state->collect_ops.finalize(rd);
if (can_delete_metric) {
/* This metric has no data and no references */
delete_dimension_uuid(&rd->state->metric_uuid);
} else {
/* Do not delete this dimension */
#ifdef ENABLE_ACLK
queue_dimension_to_aclk(rd, calc_dimension_liveness(rd, mark));
#endif
last = rd;
rd = rd->next;
continue;
}
}
#endif
if(unlikely(!last)) {
rrddim_free(st, rd);
rd = st->dimensions;
continue;
}
else {
rrddim_free(st, rd);
rd = last->next;
continue;
}
}
last = rd;
rd = rd->next;
}
}
else {
rrdset_flag_clear(st, RRDSET_FLAG_OBSOLETE_DIMENSIONS);
}
}
rrdset_unlock(st);
netdata_thread_enable_cancelability();
}
// ----------------------------------------------------------------------------
// compatibility layer for RRDSET files v019
#define RRDSET_MAGIC_V019 "NETDATA RRD SET FILE V019"
#define RRD_ID_LENGTH_MAX_V019 200
struct avl_element_v019 {
void *avl_link[2];
signed char avl_balance;
};
struct avl_tree_type_v019 {
void *root;
int (*compar)(void *a, void *b);
};
struct avl_tree_lock_v019 {
struct avl_tree_type_v019 avl_tree;
pthread_rwlock_t rwlock;
};
struct rrdset_map_save_v019 {
struct avl_element_v019 avl; // ignored
struct avl_element_v019 avlname; // ignored
char id[RRD_ID_LENGTH_MAX_V019 + 1]; // check to reset all - update on load
void *name; // ignored
void *unused_ptr; // ignored
void *type; // ignored
void *family; // ignored
void *title; // ignored
void *units; // ignored
void *context; // ignored
uint32_t hash_context; // ignored
uint32_t chart_type; // ignored
int update_every; // check to reset all - update on load
long entries; // check to reset all - update on load
long current_entry; // NEEDS TO BE UPDATED - FIXED ON LOAD
uint32_t flags; // ignored
void *exporting_flags; // ignored
int gap_when_lost_iterations_above; // ignored
long priority; // ignored
uint32_t rrd_memory_mode; // ignored
void *cache_dir; // ignored
char cache_filename[FILENAME_MAX+1]; // ignored - update on load
pthread_rwlock_t rrdset_rwlock; // ignored
size_t counter; // NEEDS TO BE UPDATED - maintained on load
size_t counter_done; // ignored
union { //
time_t last_accessed_time; // ignored
time_t last_entry_t; // ignored
}; //
time_t upstream_resync_time; // ignored
void *plugin_name; // ignored
void *module_name; // ignored
void *chart_uuid; // ignored
void *state; // ignored
size_t unused[3]; // ignored
size_t rrddim_page_alignment; // ignored
uint32_t hash; // ignored
uint32_t hash_name; // ignored
usec_t usec_since_last_update; // NEEDS TO BE UPDATED - maintained on load
struct timeval last_updated; // NEEDS TO BE UPDATED - check to reset all - fixed on load
struct timeval last_collected_time; // ignored
long long collected_total; // NEEDS TO BE UPDATED - maintained on load
long long last_collected_total; // NEEDS TO BE UPDATED - maintained on load
void *rrdfamily; // ignored
void *rrdhost; // ignored
void *next; // ignored
long double green; // ignored
long double red; // ignored
struct avl_tree_lock_v019 rrdvar_root_index; // ignored
void *variables; // ignored
void *alarms; // ignored
unsigned long memsize; // check to reset all - update on load
char magic[sizeof(RRDSET_MAGIC_V019) + 1]; // check to reset all - update on load
struct avl_tree_lock_v019 dimensions_index; // ignored
void *dimensions; // ignored
};
void rrdset_memory_file_update(RRDSET *st) {
if(!st->st_on_file) return;
struct rrdset_map_save_v019 *st_on_file = st->st_on_file;
st_on_file->current_entry = st->current_entry;
st_on_file->counter = st->counter;
st_on_file->usec_since_last_update = st->usec_since_last_update;
st_on_file->last_updated.tv_sec = st->last_updated.tv_sec;
st_on_file->last_updated.tv_usec = st->last_updated.tv_usec;
st_on_file->collected_total = st->collected_total;
st_on_file->last_collected_total = st->last_collected_total;
}
const char *rrdset_cache_filename(RRDSET *st) {
if(!st->st_on_file) return NULL;
struct rrdset_map_save_v019 *st_on_file = st->st_on_file;
return st_on_file->cache_filename;
}
void rrdset_memory_file_free(RRDSET *st) {
if(!st->st_on_file) return;
// needed for memory mode map, to save the latest state
rrdset_memory_file_update(st);
struct rrdset_map_save_v019 *st_on_file = st->st_on_file;
munmap(st_on_file, st_on_file->memsize);
// remove the pointers from the RRDDIM
st->st_on_file = NULL;
}
void rrdset_memory_file_save(RRDSET *st) {
if(!st->st_on_file) return;
rrdset_memory_file_update(st);
struct rrdset_map_save_v019 *st_on_file = st->st_on_file;
if(st_on_file->rrd_memory_mode != RRD_MEMORY_MODE_SAVE) return;
memory_file_save(st_on_file->cache_filename, st->st_on_file, st_on_file->memsize);
}
bool rrdset_memory_load_or_create_map_save(RRDSET *st, RRD_MEMORY_MODE memory_mode) {
if(memory_mode != RRD_MEMORY_MODE_SAVE && memory_mode != RRD_MEMORY_MODE_MAP)
return false;
char fullfilename[FILENAME_MAX + 1];
snprintfz(fullfilename, FILENAME_MAX, "%s/main.db", st->cache_dir);
unsigned long size = sizeof(struct rrdset_map_save_v019);
struct rrdset_map_save_v019 *st_on_file = (struct rrdset_map_save_v019 *)netdata_mmap(
fullfilename, size,
((memory_mode == RRD_MEMORY_MODE_MAP) ? MAP_SHARED : MAP_PRIVATE),
0);
if(!st_on_file) return false;
time_t now = now_realtime_sec();
if(strcmp(st_on_file->magic, RRDSET_MAGIC_V019) != 0) {
info("Initializing file '%s'.", fullfilename);
memset(st_on_file, 0, size);
}
else if(strncmp(st_on_file->id, st->id, RRD_ID_LENGTH_MAX_V019) != 0) {
error("File '%s' contents are not for chart '%s'. Clearing it.", fullfilename, st->id);
memset(st_on_file, 0, size);
}
else if(st_on_file->memsize != size || st_on_file->entries != st->entries) {
error("File '%s' does not have the desired size. Clearing it.", fullfilename);
memset(st_on_file, 0, size);
}
else if(st_on_file->update_every != st->update_every) {
error("File '%s' does not have the desired granularity. Clearing it.", fullfilename);
memset(st_on_file, 0, size);
}
else if((now - st_on_file->last_updated.tv_sec) > st->update_every * st->entries) {
info("File '%s' is too old. Clearing it.", fullfilename);
memset(st_on_file, 0, size);
}
else if(st_on_file->last_updated.tv_sec > now + st->update_every) {
error("File '%s' refers to the future by %zd secs. Resetting it to now.", fullfilename, (ssize_t)(st_on_file->last_updated.tv_sec - now));
st_on_file->last_updated.tv_sec = now;
}
if(st_on_file->current_entry >= st_on_file->entries)
st_on_file->current_entry = 0;
// make sure the database is aligned
bool align_last_updated = false;
if(st_on_file->last_updated.tv_sec) {
st_on_file->update_every = st->update_every;
align_last_updated = true;
}
// copy the useful values to st
st->current_entry = st_on_file->current_entry;
st->counter = st_on_file->counter;
st->usec_since_last_update = st_on_file->usec_since_last_update;
st->last_updated.tv_sec = st_on_file->last_updated.tv_sec;
st->last_updated.tv_usec = st_on_file->last_updated.tv_usec;
st->collected_total = st_on_file->collected_total;
st->last_collected_total = st_on_file->last_collected_total;
// link it to st
st->st_on_file = st_on_file;
// clear everything
memset(st_on_file, 0, size);
// set the values we need
strncpyz(st_on_file->id, st->id, RRD_ID_LENGTH_MAX_V019 + 1);
strcpy(st_on_file->cache_filename, fullfilename);
strcpy(st_on_file->magic, RRDSET_MAGIC_V019);
st_on_file->memsize = size;
st_on_file->entries = st->entries;
st_on_file->update_every = st->update_every;
st_on_file->rrd_memory_mode = memory_mode;
if(align_last_updated)
last_updated_time_align(st);
// copy the useful values back to st_on_file
rrdset_memory_file_update(st);
return true;
}
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