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rrdset.c
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// SPDX-License-Identifier: GPL-3.0-or-later
#define NETDATA_RRD_INTERNALS
#include "rrd.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 *) &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 *) (&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 *)(&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);
// fprintf(stderr, "SEARCHING: %s\n", name);
result = avl_search_lock(&host->rrdset_root_index_name, (avl *) (&(tmp.avlname)));
if(result) {
RRDSET *st = rrdset_from_avlname(result);
if(strcmp(st->magic, RRDSET_MAGIC) != 0)
error("Search for RRDSET %s returned an invalid RRDSET %s (name %s)", name, st->id, st->name);
// fprintf(stderr, "FOUND: %s\n", name);
return rrdset_from_avlname(result);
}
// fprintf(stderr, "NOT FOUND: %s\n", name);
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 != '.' && !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 b[CONFIG_MAX_VALUE + 1];
char n[RRD_ID_LENGTH_MAX + 1];
snprintfz(n, RRD_ID_LENGTH_MAX, "%s.%s", st->type, name);
rrdset_strncpyz_name(b, n, CONFIG_MAX_VALUE);
if(rrdset_index_find_name(host, b, 0)) {
error("RRDSET: chart name '%s' on host '%s' already exists.", b, host->hostname);
return 0;
}
if(st->name) {
rrdset_index_del_name(host, st);
st->name = config_set_default(st->config_section, "name", b);
st->hash_name = simple_hash(st->name);
rrdsetvar_rename_all(st);
}
else {
st->name = config_get(st->config_section, "name", b);
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_BACKEND_SEND);
rrdset_flag_clear(st, RRDSET_FLAG_BACKEND_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 1;
}
inline void rrdset_is_obsolete(RRDSET *st) {
if(unlikely(!(rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE)))) {
rrdset_flag_set(st, RRDSET_FLAG_OBSOLETE);
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);
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) {
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(unlikely(entries < 5)) entries = 5;
if(unlikely(entries > RRD_HISTORY_ENTRIES_MAX)) entries = RRD_HISTORY_ENTRIES_MAX;
if(unlikely(mode == RRD_MEMORY_MODE_NONE || mode == RRD_MEMORY_MODE_ALLOC))
return entries;
long page = (size_t)sysconf(_SC_PAGESIZE);
long size = sizeof(RRDDIM) + entries * sizeof(storage_number);
if(unlikely(size % page)) {
size -= (size % page);
size += page;
long n = (size - sizeof(RRDDIM)) / 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
while(st->variables) rrdsetvar_free(st->variables);
while(st->alarms) rrdsetcalc_unlink(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(st->config_section);
freez(st->plugin_name);
freez(st->module_name);
switch(st->rrd_memory_mode) {
case RRD_MEMORY_MODE_SAVE:
case RRD_MEMORY_MODE_MAP:
case RRD_MEMORY_MODE_RAM:
case RRD_MEMORY_MODE_DBENGINE:
debug(D_RRD_CALLS, "Unmapping stats '%s'.", st->name);
munmap(st, st->memsize);
break;
case RRD_MEMORY_MODE_ALLOC:
case RRD_MEMORY_MODE_NONE:
freez(st);
break;
}
}
void rrdset_save(RRDSET *st) {
rrdset_check_rdlock(st);
// info("Saving chart '%s' ('%s')", st->id, st->name);
if(st->rrd_memory_mode == RRD_MEMORY_MODE_SAVE) {
debug(D_RRD_STATS, "Saving stats '%s' to '%s'.", st->name, st->cache_filename);
memory_file_save(st->cache_filename, st, st->memsize);
}
RRDDIM *rd;
rrddim_foreach_read(rd, st) {
if(likely(rd->rrd_memory_mode == RRD_MEMORY_MODE_SAVE)) {
debug(D_RRD_STATS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename);
memory_file_save(rd->cache_filename, rd, rd->memsize);
}
}
}
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) {
info("Deleting chart header file '%s'.", st->cache_filename);
if(unlikely(unlink(st->cache_filename) == -1))
error("Cannot delete chart header file '%s'", st->cache_filename);
}
rrddim_foreach_read(rd, st) {
if(likely(rd->rrd_memory_mode == RRD_MEMORY_MODE_SAVE || rd->rrd_memory_mode == RRD_MEMORY_MODE_MAP)) {
info("Deleting dimension file '%s'.", rd->cache_filename);
if(unlikely(unlink(rd->cache_filename) == -1))
error("Cannot delete dimension file '%s'", rd->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)) {
if(likely(rd->rrd_memory_mode == RRD_MEMORY_MODE_SAVE || rd->rrd_memory_mode == RRD_MEMORY_MODE_MAP)) {
info("Deleting dimension file '%s'.", rd->cache_filename);
if(unlikely(unlink(rd->cache_filename) == -1))
error("Cannot delete dimension file '%s'", rd->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;
}
// ------------------------------------------------------------------------
// check if it already exists
char fullid[RRD_ID_LENGTH_MAX + 1];
snprintfz(fullid, RRD_ID_LENGTH_MAX, "%s.%s", type, id);
RRDSET *st = rrdset_find_on_create(host, fullid);
if(st) {
rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
return st;
}
rrdhost_wrlock(host);
st = rrdset_find_on_create(host, fullid);
if(st) {
rrdhost_unlock(host);
rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
return st;
}
char fullfilename[FILENAME_MAX + 1];
// ------------------------------------------------------------------------
// compose the config_section for this chart
char config_section[RRD_ID_LENGTH_MAX + 1];
if(host == localhost)
strcpy(config_section, fullid);
else
snprintfz(config_section, RRD_ID_LENGTH_MAX, "%s/%s", host->machine_guid, fullid);
// ------------------------------------------------------------------------
// get the options from the config, we need to create it
long rentries = config_get_number(config_section, "history", history_entries);
long entries = align_entries_to_pagesize(memory_mode, rentries);
if(entries != rentries) entries = config_set_number(config_section, "history", entries);
if(memory_mode == RRD_MEMORY_MODE_NONE && entries != rentries)
entries = config_set_number(config_section, "history", 10);
int enabled = config_get_boolean(config_section, "enabled", 1);
if(!enabled) entries = 5;
if(memory_mode == RRD_MEMORY_MODE_DBENGINE)
entries = config_set_number(config_section, "history", 5);
unsigned long size = sizeof(RRDSET);
char *cache_dir = rrdset_cache_dir(host, fullid, config_section);
time_t now = now_realtime_sec();
// ------------------------------------------------------------------------
// load it or allocate it
debug(D_RRD_CALLS, "Creating RRD_STATS for '%s.%s'.", type, id);
snprintfz(fullfilename, FILENAME_MAX, "%s/main.db", cache_dir);
if(memory_mode == RRD_MEMORY_MODE_SAVE || memory_mode == RRD_MEMORY_MODE_MAP ||
memory_mode == RRD_MEMORY_MODE_RAM || memory_mode == RRD_MEMORY_MODE_DBENGINE) {
st = (RRDSET *) mymmap(
(memory_mode == RRD_MEMORY_MODE_RAM || memory_mode == RRD_MEMORY_MODE_DBENGINE)?NULL:fullfilename
, size
, ((memory_mode == RRD_MEMORY_MODE_MAP) ? MAP_SHARED : MAP_PRIVATE)
, 0
);
if(st) {
memset(&st->avl, 0, sizeof(avl));
memset(&st->avlname, 0, sizeof(avl));
memset(&st->rrdvar_root_index, 0, sizeof(avl_tree_lock));
memset(&st->dimensions_index, 0, sizeof(avl_tree_lock));
memset(&st->rrdset_rwlock, 0, sizeof(netdata_rwlock_t));
st->name = NULL;
st->config_section = NULL;
st->type = NULL;
st->family = NULL;
st->title = NULL;
st->units = NULL;
st->context = NULL;
st->cache_dir = NULL;
st->plugin_name = NULL;
st->module_name = NULL;
st->dimensions = NULL;
st->rrdfamily = NULL;
st->rrdhost = NULL;
st->next = NULL;
st->variables = NULL;
st->alarms = NULL;
st->flags = 0x00000000;
if(memory_mode == RRD_MEMORY_MODE_RAM || memory_mode == RRD_MEMORY_MODE_DBENGINE) {
memset(st, 0, size);
}
else {
if(strcmp(st->magic, RRDSET_MAGIC) != 0) {
info("Initializing file %s.", fullfilename);
memset(st, 0, size);
}
else if(strcmp(st->id, fullid) != 0) {
error("File %s contents are not for chart %s. Clearing it.", fullfilename, fullid);
// munmap(st, size);
// st = NULL;
memset(st, 0, size);
}
else if(st->memsize != size || st->entries != entries) {
error("File %s does not have the desired size. Clearing it.", fullfilename);
memset(st, 0, size);
}
else if(st->update_every != update_every) {
error("File %s does not have the desired update frequency. Clearing it.", fullfilename);
memset(st, 0, size);
}
else if((now - st->last_updated.tv_sec) > update_every * entries) {
info("File %s is too old. Clearing it.", fullfilename);
memset(st, 0, size);
}
else if(st->last_updated.tv_sec > now + update_every) {
error("File %s refers to the future by %zd secs. Resetting it to now.", fullfilename, (ssize_t)(st->last_updated.tv_sec - now));
st->last_updated.tv_sec = now;
}
// make sure the database is aligned
if(st->last_updated.tv_sec) {
st->update_every = update_every;
last_updated_time_align(st);
}
}
// make sure we have the right memory mode
// even if we cleared the memory
st->rrd_memory_mode = memory_mode;
}
}
if(unlikely(!st)) {
st = callocz(1, size);
if (memory_mode == RRD_MEMORY_MODE_DBENGINE)
st->rrd_memory_mode = RRD_MEMORY_MODE_DBENGINE;
else
st->rrd_memory_mode = (memory_mode == RRD_MEMORY_MODE_NONE) ? RRD_MEMORY_MODE_NONE : RRD_MEMORY_MODE_ALLOC;
}
st->plugin_name = plugin?strdupz(plugin):NULL;
st->module_name = module?strdupz(module):NULL;
st->config_section = strdupz(config_section);
st->rrdhost = host;
st->memsize = size;
st->entries = entries;
st->update_every = update_every;
if(st->current_entry >= st->entries) st->current_entry = 0;
strcpy(st->cache_filename, fullfilename);
strcpy(st->magic, RRDSET_MAGIC);
strcpy(st->id, fullid);
st->hash = simple_hash(st->id);
st->cache_dir = cache_dir;
st->chart_type = rrdset_type_id(config_get(st->config_section, "chart type", rrdset_type_name(chart_type)));
st->type = config_get(st->config_section, "type", type);
st->family = config_get(st->config_section, "family", family?family:st->type);
json_fix_string(st->family);
st->units = config_get(st->config_section, "units", units?units:"");
json_fix_string(st->units);
st->context = config_get(st->config_section, "context", context?context:st->id);
json_fix_string(st->context);
st->hash_context = simple_hash(st->context);
st->priority = config_get_number(st->config_section, "priority", priority);
if(enabled)
rrdset_flag_set(st, RRDSET_FLAG_ENABLED);
else
rrdset_flag_clear(st, RRDSET_FLAG_ENABLED);
rrdset_flag_clear(st, RRDSET_FLAG_DETAIL);
rrdset_flag_clear(st, RRDSET_FLAG_DEBUG);
rrdset_flag_clear(st, RRDSET_FLAG_OBSOLETE);
rrdset_flag_clear(st, RRDSET_FLAG_BACKEND_SEND);
rrdset_flag_clear(st, RRDSET_FLAG_BACKEND_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);
rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK);
// if(!strcmp(st->id, "disk_util.dm-0")) {
// st->debug = 1;
// error("enabled debugging for '%s'", st->id);
// }
// else error("not enabled debugging for '%s'", st->id);
st->green = NAN;
st->red = NAN;
st->last_collected_time.tv_sec = 0;
st->last_collected_time.tv_usec = 0;
st->counter_done = 0;
st->rrddim_page_alignment = 0;
st->gap_when_lost_iterations_above = (int) (gap_when_lost_iterations_above + 2);
st->last_accessed_time = 0;
st->upstream_resync_time = 0;
avl_init_lock(&st->dimensions_index, rrddim_compare);
avl_init_lock(&st->rrdvar_root_index, rrdvar_compare);
netdata_rwlock_init(&st->rrdset_rwlock);
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 = config_get(st->config_section, "title", 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);
rrdhost_cleanup_obsolete_charts(host);
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_noatomic(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_noatomic(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
info("RRD database for chart '%s' on host '%s' is %0.5" LONG_DOUBLE_MODIFIER " secs in the future (counter #%zu, update #%zu). Adjusting it to current time.", st->id, st->rrdhost->hostname, (LONG_DOUBLE)-since_last_usec / USEC_PER_SEC, st->counter, st->counter_done);
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
info("RRD database for chart '%s' on host '%s' is %0.5" LONG_DOUBLE_MODIFIER " secs in the past (counter #%zu, update #%zu). Adjusting it to current time.", st->id, st->rrdhost->hostname, (LONG_DOUBLE)since_last_usec / USEC_PER_SEC, st->counter, st->counter_done);
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" LONG_DOUBLE_MODIFIER, (LONG_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" LONG_DOUBLE_MODIFIER, (LONG_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" LONG_DOUBLE_MODIFIER, (LONG_DOUBLE)last_updated_ut / USEC_PER_SEC);
#endif
return last_updated_ut;
}
static inline void rrdset_done_push_exclusive(RRDSET *st) {
// usec_t update_every_ut = st->update_every * USEC_PER_SEC; // st->update_every in microseconds
//
// if(unlikely(st->usec_since_last_update > update_every_ut * remote_clock_resync_iterations)) {
// error("Chart '%s' was last collected %llu usec before. Resetting it.", st->id, st->usec_since_last_update);
// rrdset_reset(st);
// st->usec_since_last_update = update_every_ut;
// }
if(unlikely(!st->last_collected_time.tv_sec)) {
// it is the first entry
// set the last_collected_time to now
rrdset_init_last_collected_time(st);
}
else {
// it is not the first entry
// calculate the proper last_collected_time, using usec_since_last_update
rrdset_update_last_collected_time(st);
}
st->counter_done++;
rrdset_rdlock(st);
rrdset_done_push(st);
rrdset_unlock(st);
}
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 storage_flags
) {
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;
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" LONG_DOUBLE_MODIFIER " (last updated time)", (LONG_DOUBLE)last_stored_ut/USEC_PER_SEC);
rrdset_debug(st, "next_store_ut = %0.3" LONG_DOUBLE_MODIFIER " (next interpolation point)", (LONG_DOUBLE)next_store_ut/USEC_PER_SEC);
#endif
last_ut = next_store_ut;
rrddim_foreach_read(rd, st) {
calculated_number new_value;
switch(rd->algorithm) {
case RRD_ALGORITHM_INCREMENTAL:
new_value = (calculated_number)
( rd->calculated_value
* (calculated_number)(next_store_ut - last_collect_ut)
/ (calculated_number)(now_collect_ut - last_collect_ut)
);
#ifdef NETDATA_INTERNAL_CHECKS
rrdset_debug(st, "%s: CALC2 INC "
CALCULATED_NUMBER_FORMAT " = "
CALCULATED_NUMBER_FORMAT