+#define NETDATA_RRD_INTERNALS 1
#include "common.h"
-#define RRD_DEFAULT_GAP_INTERPOLATIONS 1
-
// ----------------------------------------------------------------------------
// globals
int rrd_delete_unupdated_dimensions = 0;
*/
-int rrd_update_every = UPDATE_EVERY;
-int rrd_default_history_entries = RRD_DEFAULT_HISTORY_ENTRIES;
-int rrd_memory_mode = RRD_MEMORY_MODE_SAVE;
+int default_rrd_update_every = UPDATE_EVERY;
+int default_rrd_history_entries = RRD_DEFAULT_HISTORY_ENTRIES;
+RRD_MEMORY_MODE default_rrd_memory_mode = RRD_MEMORY_MODE_SAVE;
-static int rrdset_compare(void* a, void* b);
-static int rrdset_compare_name(void* a, void* b);
-static int rrdfamily_compare(void *a, void *b);
// ----------------------------------------------------------------------------
-// RRDHOST
-
-RRDHOST localhost = {
- .hostname = "localhost",
- .rrdset_root = NULL,
- .rrdset_root_rwlock = PTHREAD_RWLOCK_INITIALIZER,
- .rrdset_root_index = {
- { NULL, rrdset_compare },
- AVL_LOCK_INITIALIZER
- },
- .rrdset_root_index_name = {
- { NULL, rrdset_compare_name },
- AVL_LOCK_INITIALIZER
- },
- .rrdfamily_root_index = {
- { NULL, rrdfamily_compare },
- AVL_LOCK_INITIALIZER
- },
- .variables_root_index = {
- { NULL, rrdvar_compare },
- AVL_LOCK_INITIALIZER
- },
- .health_log = {
- .next_log_id = 1,
- .next_alarm_id = 1,
- .count = 0,
- .max = 1000,
- .alarms = NULL,
- .alarm_log_rwlock = PTHREAD_RWLOCK_INITIALIZER
- }
-};
-
-void rrdhost_init(char *hostname) {
- localhost.hostname = hostname;
- localhost.health_log.next_log_id =
- localhost.health_log.next_alarm_id = now_realtime_sec();
-}
-
-void rrdhost_rwlock(RRDHOST *host) {
- pthread_rwlock_wrlock(&host->rrdset_root_rwlock);
-}
-
-void rrdhost_rdlock(RRDHOST *host) {
- pthread_rwlock_rdlock(&host->rrdset_root_rwlock);
-}
-
-void rrdhost_unlock(RRDHOST *host) {
- pthread_rwlock_unlock(&host->rrdset_root_rwlock);
-}
-
-void rrdhost_check_rdlock_int(RRDHOST *host, const char *file, const char *function, const unsigned long line) {
- int ret = pthread_rwlock_trywrlock(&host->rrdset_root_rwlock);
-
- if(ret == 0)
- fatal("RRDHOST '%s' should be read-locked, but it is not, at function %s() at line %lu of file '%s'", host->hostname, function, line, file);
-}
-
-void rrdhost_check_wrlock_int(RRDHOST *host, const char *file, const char *function, const unsigned long line) {
- int ret = pthread_rwlock_tryrdlock(&host->rrdset_root_rwlock);
-
- if(ret == 0)
- fatal("RRDHOST '%s' should be write-locked, but it is not, at function %s() at line %lu of file '%s'", host->hostname, function, line, file);
-}
-
-// ----------------------------------------------------------------------------
-// RRDFAMILY index
-
-static int rrdfamily_compare(void *a, void *b) {
- if(((RRDFAMILY *)a)->hash_family < ((RRDFAMILY *)b)->hash_family) return -1;
- else if(((RRDFAMILY *)a)->hash_family > ((RRDFAMILY *)b)->hash_family) return 1;
- else return strcmp(((RRDFAMILY *)a)->family, ((RRDFAMILY *)b)->family);
-}
-
-#define rrdfamily_index_add(host, rc) (RRDFAMILY *)avl_insert_lock(&((host)->rrdfamily_root_index), (avl *)(rc))
-#define rrdfamily_index_del(host, rc) (RRDFAMILY *)avl_remove_lock(&((host)->rrdfamily_root_index), (avl *)(rc))
-
-static RRDFAMILY *rrdfamily_index_find(RRDHOST *host, const char *id, uint32_t hash) {
- RRDFAMILY tmp;
- tmp.family = id;
- tmp.hash_family = (hash)?hash:simple_hash(tmp.family);
-
- return (RRDFAMILY *)avl_search_lock(&(host->rrdfamily_root_index), (avl *) &tmp);
-}
-
-RRDFAMILY *rrdfamily_create(const char *id) {
- RRDFAMILY *rc = rrdfamily_index_find(&localhost, id, 0);
- if(!rc) {
- rc = callocz(1, sizeof(RRDFAMILY));
+// RRD - memory modes
- rc->family = strdupz(id);
- rc->hash_family = simple_hash(rc->family);
-
- // initialize the variables index
- avl_init_lock(&rc->variables_root_index, rrdvar_compare);
-
- RRDFAMILY *ret = rrdfamily_index_add(&localhost, rc);
- if(ret != rc)
- fatal("RRDFAMILY: INTERNAL ERROR: Expected to INSERT RRDFAMILY '%s' into index, but inserted '%s'.", rc->family, (ret)?ret->family:"NONE");
- }
-
- rc->use_count++;
- return rc;
-}
+inline const char *rrd_memory_mode_name(RRD_MEMORY_MODE id) {
+ switch(id) {
+ case RRD_MEMORY_MODE_RAM:
+ return RRD_MEMORY_MODE_RAM_NAME;
-void rrdfamily_free(RRDFAMILY *rc) {
- rc->use_count--;
- if(!rc->use_count) {
- RRDFAMILY *ret = rrdfamily_index_del(&localhost, rc);
- if(ret != rc)
- fatal("RRDFAMILY: INTERNAL ERROR: Expected to DELETE RRDFAMILY '%s' from index, but deleted '%s'.", rc->family, (ret)?ret->family:"NONE");
+ case RRD_MEMORY_MODE_MAP:
+ return RRD_MEMORY_MODE_MAP_NAME;
- if(rc->variables_root_index.avl_tree.root != NULL)
- fatal("RRDFAMILY: INTERNAL ERROR: Variables index of RRDFAMILY '%s' that is freed, is not empty.", rc->family);
+ case RRD_MEMORY_MODE_NONE:
+ return RRD_MEMORY_MODE_NONE_NAME;
- freez((void *)rc->family);
- freez(rc);
+ case RRD_MEMORY_MODE_SAVE:
+ default:
+ return RRD_MEMORY_MODE_SAVE_NAME;
}
}
-// ----------------------------------------------------------------------------
-// RRDSET index
+RRD_MEMORY_MODE rrd_memory_mode_id(const char *name) {
+ if(unlikely(!strcmp(name, RRD_MEMORY_MODE_RAM_NAME)))
+ return RRD_MEMORY_MODE_RAM;
+ else if(unlikely(!strcmp(name, RRD_MEMORY_MODE_MAP_NAME)))
+ return RRD_MEMORY_MODE_MAP;
+ else if(unlikely(!strcmp(name, RRD_MEMORY_MODE_NONE_NAME)))
+ return RRD_MEMORY_MODE_NONE;
-static 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);
+ return RRD_MEMORY_MODE_SAVE;
}
-#define rrdset_index_add(host, st) (RRDSET *)avl_insert_lock(&((host)->rrdset_root_index), (avl *)(st))
-#define rrdset_index_del(host, st) (RRDSET *)avl_remove_lock(&((host)->rrdset_root_index), (avl *)(st))
-
-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
+// RRD - algorithms types
-#define rrdset_from_avlname(avlname_ptr) ((RRDSET *)((avlname_ptr) - offsetof(RRDSET, avlname)))
+RRD_ALGORITHM rrd_algorithm_id(const char *name) {
+ if(strcmp(name, RRD_ALGORITHM_INCREMENTAL_NAME) == 0)
+ return RRD_ALGORITHM_INCREMENTAL;
-static int rrdset_compare_name(void* a, void* b) {
- RRDSET *A = rrdset_from_avlname(a);
- RRDSET *B = rrdset_from_avlname(b);
+ else if(strcmp(name, RRD_ALGORITHM_ABSOLUTE_NAME) == 0)
+ return RRD_ALGORITHM_ABSOLUTE;
- // fprintf(stderr, "COMPARING: %s with %s\n", A->name, B->name);
+ else if(strcmp(name, RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL_NAME) == 0)
+ return RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL;
- 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);
-}
+ else if(strcmp(name, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL_NAME) == 0)
+ return RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL;
-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;
+ else
+ return RRD_ALGORITHM_ABSOLUTE;
}
-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;
-}
+const char *rrd_algorithm_name(RRD_ALGORITHM algorithm) {
+ switch(algorithm) {
+ case RRD_ALGORITHM_ABSOLUTE:
+ default:
+ return RRD_ALGORITHM_ABSOLUTE_NAME;
-static 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);
+ case RRD_ALGORITHM_INCREMENTAL:
+ return RRD_ALGORITHM_INCREMENTAL_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))
- error("Search for RRDSET %s returned an invalid RRDSET %s (name %s)", name, st->id, st->name);
+ case RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL:
+ return RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL_NAME;
- // fprintf(stderr, "FOUND: %s\n", name);
- return rrdset_from_avlname(result);
+ case RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL:
+ return RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL_NAME;
}
- // fprintf(stderr, "NOT FOUND: %s\n", name);
- return NULL;
}
// ----------------------------------------------------------------------------
-// RRDDIM index
+// RRD - chart types
-static int rrddim_compare(void* a, void* b) {
- if(((RRDDIM *)a)->hash < ((RRDDIM *)b)->hash) return -1;
- else if(((RRDDIM *)a)->hash > ((RRDDIM *)b)->hash) return 1;
- else return strcmp(((RRDDIM *)a)->id, ((RRDDIM *)b)->id);
-}
-
-#define rrddim_index_add(st, rd) (RRDDIM *)avl_insert_lock(&((st)->dimensions_index), (avl *)(rd))
-#define rrddim_index_del(st,rd ) (RRDDIM *)avl_remove_lock(&((st)->dimensions_index), (avl *)(rd))
+inline RRDSET_TYPE rrdset_type_id(const char *name) {
+ if(unlikely(strcmp(name, RRDSET_TYPE_AREA_NAME) == 0))
+ return RRDSET_TYPE_AREA;
-static RRDDIM *rrddim_index_find(RRDSET *st, const char *id, uint32_t hash) {
- RRDDIM tmp;
- strncpyz(tmp.id, id, RRD_ID_LENGTH_MAX);
- tmp.hash = (hash)?hash:simple_hash(tmp.id);
+ else if(unlikely(strcmp(name, RRDSET_TYPE_STACKED_NAME) == 0))
+ return RRDSET_TYPE_STACKED;
- return (RRDDIM *)avl_search_lock(&(st->dimensions_index), (avl *) &tmp);
+ else // if(unlikely(strcmp(name, RRDSET_TYPE_LINE_NAME) == 0))
+ return RRDSET_TYPE_LINE;
}
-// ----------------------------------------------------------------------------
-// chart types
-
-int rrdset_type_id(const char *name)
-{
- if(unlikely(strcmp(name, RRDSET_TYPE_AREA_NAME) == 0)) return RRDSET_TYPE_AREA;
- else if(unlikely(strcmp(name, RRDSET_TYPE_STACKED_NAME) == 0)) return RRDSET_TYPE_STACKED;
- else if(unlikely(strcmp(name, RRDSET_TYPE_LINE_NAME) == 0)) return RRDSET_TYPE_LINE;
- return RRDSET_TYPE_LINE;
-}
-
-const char *rrdset_type_name(int chart_type)
-{
- static char line[] = RRDSET_TYPE_LINE_NAME;
- static char area[] = RRDSET_TYPE_AREA_NAME;
- static char stacked[] = RRDSET_TYPE_STACKED_NAME;
-
+const char *rrdset_type_name(RRDSET_TYPE chart_type) {
switch(chart_type) {
case RRDSET_TYPE_LINE:
- return line;
+ default:
+ return RRDSET_TYPE_LINE_NAME;
case RRDSET_TYPE_AREA:
- return area;
+ return RRDSET_TYPE_AREA_NAME;
case RRDSET_TYPE_STACKED:
- return stacked;
+ return RRDSET_TYPE_STACKED_NAME;
}
- return line;
}
-// ----------------------------------------------------------------------------
-// load / save
-
-const char *rrd_memory_mode_name(int id)
-{
- static const char ram[] = RRD_MEMORY_MODE_RAM_NAME;
- static const char map[] = RRD_MEMORY_MODE_MAP_NAME;
- static const char save[] = RRD_MEMORY_MODE_SAVE_NAME;
-
- switch(id) {
- case RRD_MEMORY_MODE_RAM:
- return ram;
-
- case RRD_MEMORY_MODE_MAP:
- return map;
-
- case RRD_MEMORY_MODE_SAVE:
- default:
- return save;
- }
-
- return save;
-}
-
-int rrd_memory_mode_id(const char *name)
-{
- if(unlikely(!strcmp(name, RRD_MEMORY_MODE_RAM_NAME)))
- return RRD_MEMORY_MODE_RAM;
- else if(unlikely(!strcmp(name, RRD_MEMORY_MODE_MAP_NAME)))
- return RRD_MEMORY_MODE_MAP;
-
- return RRD_MEMORY_MODE_SAVE;
-}
-
-// ----------------------------------------------------------------------------
-// algorithms types
-
-int rrddim_algorithm_id(const char *name)
-{
- if(strcmp(name, RRDDIM_INCREMENTAL_NAME) == 0) return RRDDIM_INCREMENTAL;
- if(strcmp(name, RRDDIM_ABSOLUTE_NAME) == 0) return RRDDIM_ABSOLUTE;
- if(strcmp(name, RRDDIM_PCENT_OVER_ROW_TOTAL_NAME) == 0) return RRDDIM_PCENT_OVER_ROW_TOTAL;
- if(strcmp(name, RRDDIM_PCENT_OVER_DIFF_TOTAL_NAME) == 0) return RRDDIM_PCENT_OVER_DIFF_TOTAL;
- return RRDDIM_ABSOLUTE;
-}
-
-const char *rrddim_algorithm_name(int chart_type)
-{
- static char absolute[] = RRDDIM_ABSOLUTE_NAME;
- static char incremental[] = RRDDIM_INCREMENTAL_NAME;
- static char percentage_of_absolute_row[] = RRDDIM_PCENT_OVER_ROW_TOTAL_NAME;
- static char percentage_of_incremental_row[] = RRDDIM_PCENT_OVER_DIFF_TOTAL_NAME;
-
- switch(chart_type) {
- case RRDDIM_ABSOLUTE:
- return absolute;
-
- case RRDDIM_INCREMENTAL:
- return incremental;
-
- case RRDDIM_PCENT_OVER_ROW_TOTAL:
- return percentage_of_absolute_row;
-
- case RRDDIM_PCENT_OVER_DIFF_TOTAL:
- return percentage_of_incremental_row;
- }
- return absolute;
-}
-
-// ----------------------------------------------------------------------------
-// chart names
-
-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;
-}
-
-void rrdset_set_name(RRDSET *st, const char *name)
-{
- if(unlikely(st->name && !strcmp(st->name, name)))
- return;
-
- debug(D_RRD_CALLS, "rrdset_set_name() old: %s, new: %s", 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(st->name) {
- rrdset_index_del_name(&localhost, st);
- st->name = config_set_default(st->id, "name", b);
- st->hash_name = simple_hash(st->name);
- rrdsetvar_rename_all(st);
- }
- else {
- st->name = config_get(st->id, "name", b);
- st->hash_name = simple_hash(st->name);
- }
-
- pthread_rwlock_wrlock(&st->rwlock);
- RRDDIM *rd;
- for(rd = st->dimensions; rd ;rd = rd->next)
- rrddimvar_rename_all(rd);
- pthread_rwlock_unlock(&st->rwlock);
-
- if(unlikely(rrdset_index_add_name(&localhost, st) != st))
- error("RRDSET: INTERNAL ERROR: attempted to index duplicate chart name '%s'", st->name);
-}
// ----------------------------------------------------------------------------
-// cache directory
+// RRD - cache directory
-char *rrdset_cache_dir(const char *id)
-{
+char *rrdset_cache_dir(RRDHOST *host, const char *id, const char *config_section) {
char *ret = NULL;
char b[FILENAME_MAX + 1];
char n[FILENAME_MAX + 1];
rrdset_strncpyz_name(b, id, FILENAME_MAX);
- snprintfz(n, FILENAME_MAX, "%s/%s", netdata_configured_cache_dir, b);
- ret = config_get(id, "cache directory", n);
+ snprintfz(n, FILENAME_MAX, "%s/%s", host->cache_dir, b);
+ ret = config_get(config_section, "cache directory", n);
- if(rrd_memory_mode == RRD_MEMORY_MODE_MAP || rrd_memory_mode == RRD_MEMORY_MODE_SAVE) {
+ if(host->rrd_memory_mode == RRD_MEMORY_MODE_MAP || host->rrd_memory_mode == RRD_MEMORY_MODE_SAVE) {
int r = mkdir(ret, 0775);
if(r != 0 && errno != EEXIST)
error("Cannot create directory '%s'", ret);
return ret;
}
-
-// ----------------------------------------------------------------------------
-// core functions
-
-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;
-
- RRDDIM *rd;
- for(rd = st->dimensions; rd ; rd = rd->next) {
- rd->last_collected_time.tv_sec = 0;
- rd->last_collected_time.tv_usec = 0;
- rd->counter = 0;
- memset(rd->values, 0, rd->entries * sizeof(storage_number));
- }
-}
-static inline long align_entries_to_pagesize(long entries) {
- if(entries < 5) entries = 5;
- if(entries > RRD_HISTORY_ENTRIES_MAX) entries = RRD_HISTORY_ENTRIES_MAX;
-
-#ifdef NETDATA_LOG_ALLOCATIONS
- long page = (size_t)sysconf(_SC_PAGESIZE);
-
- long size = sizeof(RRDDIM) + entries * sizeof(storage_number);
- if(size % page) {
- size -= (size % page);
- size += page;
-
- long n = (size - sizeof(RRDDIM)) / sizeof(storage_number);
- return n;
- }
-
- return entries;
-#else
- return entries;
-#endif
-}
-
-static inline void timeval_align(struct timeval *tv, int update_every) {
- tv->tv_sec -= tv->tv_sec % update_every;
- tv->tv_usec = 500000;
-}
-
-RRDSET *rrdset_create(const char *type, const char *id, const char *name, const char *family, const char *context, const char *title, const char *units, long priority, int update_every, int chart_type)
-{
- if(!type || !type[0]) {
- fatal("Cannot create rrd stats without a type.");
- return NULL;
- }
-
- if(!id || !id[0]) {
- fatal("Cannot create rrd stats without an id.");
- return NULL;
- }
-
- char fullid[RRD_ID_LENGTH_MAX + 1];
- char fullfilename[FILENAME_MAX + 1];
-
- snprintfz(fullid, RRD_ID_LENGTH_MAX, "%s.%s", type, id);
-
- RRDSET *st = rrdset_find(fullid);
- if(st) {
- debug(D_RRD_CALLS, "RRDSET '%s', already exists.", fullid);
- return st;
- }
-
- long rentries = config_get_number(fullid, "history", rrd_default_history_entries);
- long entries = align_entries_to_pagesize(rentries);
- if(entries != rentries) entries = config_set_number(fullid, "history", entries);
-
- int enabled = config_get_boolean(fullid, "enabled", 1);
- if(!enabled) entries = 5;
-
- unsigned long size = sizeof(RRDSET);
- char *cache_dir = rrdset_cache_dir(fullid);
-
- debug(D_RRD_CALLS, "Creating RRD_STATS for '%s.%s'.", type, id);
-
- snprintfz(fullfilename, FILENAME_MAX, "%s/main.db", cache_dir);
- if(rrd_memory_mode != RRD_MEMORY_MODE_RAM) st = (RRDSET *)mymmap(fullfilename, size, ((rrd_memory_mode == RRD_MEMORY_MODE_MAP)?MAP_SHARED:MAP_PRIVATE), 0);
- if(st) {
- if(strcmp(st->magic, RRDSET_MAGIC) != 0) {
- errno = 0;
- info("Initializing file %s.", fullfilename);
- memset(st, 0, size);
- }
- else if(strcmp(st->id, fullid) != 0) {
- errno = 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) {
- errno = 0;
- error("File %s does not have the desired size. Clearing it.", fullfilename);
- memset(st, 0, size);
- }
- else if(st->update_every != update_every) {
- errno = 0;
- error("File %s does not have the desired update frequency. Clearing it.", fullfilename);
- memset(st, 0, size);
- }
- else if((now_realtime_sec() - st->last_updated.tv_sec) > update_every * entries) {
- errno = 0;
- error("File %s is too old. Clearing it.", fullfilename);
- memset(st, 0, size);
- }
-
- // make sure the database is aligned
- if(st->last_updated.tv_sec)
- timeval_align(&st->last_updated, update_every);
- }
-
- if(st) {
- st->name = NULL;
- st->type = NULL;
- st->family = NULL;
- st->context = NULL;
- st->title = NULL;
- st->units = NULL;
- st->dimensions = NULL;
- st->next = NULL;
- st->mapped = rrd_memory_mode;
- st->variables = NULL;
- st->alarms = NULL;
- memset(&st->rwlock, 0, sizeof(pthread_rwlock_t));
- memset(&st->avl, 0, sizeof(avl));
- memset(&st->avlname, 0, sizeof(avl));
- memset(&st->variables_root_index, 0, sizeof(avl_tree_lock));
- memset(&st->dimensions_index, 0, sizeof(avl_tree_lock));
- }
- else {
- st = callocz(1, size);
- st->mapped = RRD_MEMORY_MODE_RAM;
- }
-
- 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->id, "chart type", rrdset_type_name(chart_type)));
- st->type = config_get(st->id, "type", type);
- st->family = config_get(st->id, "family", family?family:st->type);
- st->units = config_get(st->id, "units", units?units:"");
-
- st->context = config_get(st->id, "context", context?context:st->id);
- st->hash_context = simple_hash(st->context);
-
- st->priority = config_get_number(st->id, "priority", priority);
- st->enabled = enabled;
-
- st->isdetail = 0;
- st->debug = 0;
-
- // 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->gap_when_lost_iterations_above = (int) (
- config_get_number(st->id, "gap when lost iterations above", RRD_DEFAULT_GAP_INTERPOLATIONS) + 2);
-
- avl_init_lock(&st->dimensions_index, rrddim_compare);
- avl_init_lock(&st->variables_root_index, rrdvar_compare);
-
- pthread_rwlock_init(&st->rwlock, NULL);
- rrdhost_rwlock(&localhost);
-
- if(name && *name) rrdset_set_name(st, name);
- else rrdset_set_name(st, id);
-
- {
- char varvalue[CONFIG_MAX_VALUE + 1];
- char varvalue2[CONFIG_MAX_VALUE + 1];
- snprintfz(varvalue, CONFIG_MAX_VALUE, "%s (%s)", title?title:"", st->name);
- json_escape_string(varvalue2, varvalue, sizeof(varvalue2));
- st->title = config_get(st->id, "title", varvalue2);
- }
-
- st->rrdfamily = rrdfamily_create(st->family);
- st->rrdhost = &localhost;
-
- st->next = localhost.rrdset_root;
- localhost.rrdset_root = st;
-
- if(health_enabled) {
- rrdsetvar_create(st, "last_collected_t", RRDVAR_TYPE_TIME_T, &st->last_collected_time.tv_sec, 0);
- rrdsetvar_create(st, "collected_total_raw", RRDVAR_TYPE_TOTAL, &st->last_collected_total, 0);
- rrdsetvar_create(st, "green", RRDVAR_TYPE_CALCULATED, &st->green, 0);
- rrdsetvar_create(st, "red", RRDVAR_TYPE_CALCULATED, &st->red, 0);
- rrdsetvar_create(st, "update_every", RRDVAR_TYPE_INT, &st->update_every, 0);
- }
-
- if(unlikely(rrdset_index_add(&localhost, st) != st))
- error("RRDSET: INTERNAL ERROR: attempt to index duplicate chart '%s'", st->id);
-
- rrdsetcalc_link_matching(st);
- rrdcalctemplate_link_matching(st);
-
- rrdhost_unlock(&localhost);
-
- return(st);
-}
-
-RRDDIM *rrddim_add(RRDSET *st, const char *id, const char *name, long multiplier, long divisor, int algorithm)
-{
- RRDDIM *rd = rrddim_find(st, id);
- if(rd) {
- debug(D_RRD_CALLS, "Cannot create rrd dimension '%s/%s', it already exists.", st->id, name?name:"<NONAME>");
- return rd;
- }
-
- char filename[FILENAME_MAX + 1];
- char fullfilename[FILENAME_MAX + 1];
-
- char varname[CONFIG_MAX_NAME + 1];
- unsigned long size = sizeof(RRDDIM) + (st->entries * sizeof(storage_number));
-
- debug(D_RRD_CALLS, "Adding dimension '%s/%s'.", st->id, id);
-
- rrdset_strncpyz_name(filename, id, FILENAME_MAX);
- snprintfz(fullfilename, FILENAME_MAX, "%s/%s.db", st->cache_dir, filename);
-
- if(rrd_memory_mode != RRD_MEMORY_MODE_RAM)
- rd = (RRDDIM *)mymmap(fullfilename, size, ((rrd_memory_mode == RRD_MEMORY_MODE_MAP)?MAP_SHARED:MAP_PRIVATE), 1);
-
- if(rd) {
- struct timeval now;
- now_realtime_timeval(&now);
-
- if(strcmp(rd->magic, RRDDIMENSION_MAGIC) != 0) {
- errno = 0;
- info("Initializing file %s.", fullfilename);
- memset(rd, 0, size);
- }
- else if(rd->memsize != size) {
- errno = 0;
- error("File %s does not have the desired size. Clearing it.", fullfilename);
- memset(rd, 0, size);
- }
- else if(rd->multiplier != multiplier) {
- errno = 0;
- error("File %s does not have the same multiplier. Clearing it.", fullfilename);
- memset(rd, 0, size);
- }
- else if(rd->divisor != divisor) {
- errno = 0;
- error("File %s does not have the same divisor. Clearing it.", fullfilename);
- memset(rd, 0, size);
- }
- else if(rd->update_every != st->update_every) {
- errno = 0;
- error("File %s does not have the same refresh frequency. Clearing it.", fullfilename);
- memset(rd, 0, size);
- }
- else if(dt_usec(&now, &rd->last_collected_time) > (rd->entries * rd->update_every * USEC_PER_SEC)) {
- errno = 0;
- error("File %s is too old. Clearing it.", fullfilename);
- memset(rd, 0, size);
- }
- else if(strcmp(rd->id, id) != 0) {
- errno = 0;
- error("File %s contents are not for dimension %s. Clearing it.", fullfilename, id);
- // munmap(rd, size);
- // rd = NULL;
- memset(rd, 0, size);
- }
-
- if(rd->algorithm && rd->algorithm != algorithm)
- error("File %s does not have the expected algorithm (expected %d '%s', found %d '%s'). Previous values may be wrong.", fullfilename, algorithm, rrddim_algorithm_name(algorithm), rd->algorithm, rrddim_algorithm_name(rd->algorithm));
- }
-
- if(rd) {
- // we have a file mapped for rd
- rd->mapped = rrd_memory_mode;
- rd->flags = 0x00000000;
- rd->variables = NULL;
- rd->next = NULL;
- rd->name = NULL;
- memset(&rd->avl, 0, sizeof(avl));
- }
- else {
- // if we didn't manage to get a mmap'd dimension, just create one
-
- rd = callocz(1, size);
- rd->mapped = RRD_MEMORY_MODE_RAM;
- }
- rd->memsize = size;
-
- strcpy(rd->magic, RRDDIMENSION_MAGIC);
- strcpy(rd->cache_filename, fullfilename);
- strncpyz(rd->id, id, RRD_ID_LENGTH_MAX);
- rd->hash = simple_hash(rd->id);
-
- snprintfz(varname, CONFIG_MAX_NAME, "dim %s name", rd->id);
- rd->name = config_get(st->id, varname, (name && *name)?name:rd->id);
-
- snprintfz(varname, CONFIG_MAX_NAME, "dim %s algorithm", rd->id);
- rd->algorithm = rrddim_algorithm_id(config_get(st->id, varname, rrddim_algorithm_name(algorithm)));
-
- snprintfz(varname, CONFIG_MAX_NAME, "dim %s multiplier", rd->id);
- rd->multiplier = config_get_number(st->id, varname, multiplier);
-
- snprintfz(varname, CONFIG_MAX_NAME, "dim %s divisor", rd->id);
- rd->divisor = config_get_number(st->id, varname, divisor);
- if(!rd->divisor) rd->divisor = 1;
-
- rd->entries = st->entries;
- rd->update_every = st->update_every;
-
- // prevent incremental calculation spikes
- rd->counter = 0;
- rd->updated = 0;
- rd->calculated_value = 0;
- rd->last_calculated_value = 0;
- rd->collected_value = 0;
- rd->last_collected_value = 0;
- rd->collected_volume = 0;
- rd->stored_volume = 0;
- rd->last_stored_value = 0;
- rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS);
- rd->last_collected_time.tv_sec = 0;
- rd->last_collected_time.tv_usec = 0;
- rd->rrdset = st;
-
- // append this dimension
- pthread_rwlock_wrlock(&st->rwlock);
- if(!st->dimensions)
- st->dimensions = rd;
- else {
- RRDDIM *td = st->dimensions;
- for(; td->next; td = td->next) ;
- td->next = rd;
- }
-
- if(health_enabled) {
- rrddimvar_create(rd, RRDVAR_TYPE_CALCULATED, NULL, NULL, &rd->last_stored_value, 0);
- rrddimvar_create(rd, RRDVAR_TYPE_COLLECTED, NULL, "_raw", &rd->last_collected_value, 0);
- rrddimvar_create(rd, RRDVAR_TYPE_TIME_T, NULL, "_last_collected_t", &rd->last_collected_time.tv_sec, 0);
- }
-
- pthread_rwlock_unlock(&st->rwlock);
-
- if(unlikely(rrddim_index_add(st, rd) != rd))
- error("RRDDIM: INTERNAL ERROR: attempt to index duplicate dimension '%s' on chart '%s'", rd->id, st->id);
-
- return(rd);
-}
-
-void rrddim_set_name(RRDSET *st, RRDDIM *rd, const char *name)
-{
- if(unlikely(rd->name && !strcmp(rd->name, name)))
- return;
-
- debug(D_RRD_CALLS, "rrddim_set_name() from %s.%s to %s.%s", st->name, rd->name, st->name, name);
-
- char varname[CONFIG_MAX_NAME + 1];
- snprintfz(varname, CONFIG_MAX_NAME, "dim %s name", rd->id);
- rd->name = config_set_default(st->id, varname, name);
-
- rrddimvar_rename_all(rd);
-}
-
-void rrddim_free(RRDSET *st, RRDDIM *rd)
-{
- debug(D_RRD_CALLS, "rrddim_free() %s.%s", st->name, rd->name);
-
- if(rd == st->dimensions)
- st->dimensions = rd->next;
- else {
- RRDDIM *i;
- for (i = st->dimensions; i && i->next != rd; i = i->next) ;
-
- if (i && i->next == rd)
- i->next = rd->next;
- else
- error("Request to free dimension '%s.%s' but it is not linked.", st->id, rd->name);
- }
- rd->next = NULL;
-
- while(rd->variables)
- rrddimvar_free(rd->variables);
-
- if(unlikely(rrddim_index_del(st, rd) != rd))
- error("RRDDIM: INTERNAL ERROR: attempt to remove from index dimension '%s' on chart '%s', removed a different dimension.", rd->id, st->id);
-
- // free(rd->annotations);
- if(rd->mapped == RRD_MEMORY_MODE_SAVE) {
- debug(D_RRD_CALLS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename);
- savememory(rd->cache_filename, rd, rd->memsize);
-
- debug(D_RRD_CALLS, "Unmapping dimension '%s'.", rd->name);
- munmap(rd, rd->memsize);
- }
- else if(rd->mapped == RRD_MEMORY_MODE_MAP) {
- debug(D_RRD_CALLS, "Unmapping dimension '%s'.", rd->name);
- munmap(rd, rd->memsize);
- }
- else {
- debug(D_RRD_CALLS, "Removing dimension '%s'.", rd->name);
- freez(rd);
- }
-}
-
-void rrdset_free_all(void)
-{
- info("Freeing all memory...");
-
- rrdhost_rwlock(&localhost);
-
- RRDSET *st;
- for(st = localhost.rrdset_root; st ;) {
- RRDSET *next = st->next;
-
- pthread_rwlock_wrlock(&st->rwlock);
-
- while(st->variables)
- rrdsetvar_free(st->variables);
-
- while(st->alarms)
- rrdsetcalc_unlink(st->alarms);
-
- while(st->dimensions)
- rrddim_free(st, st->dimensions);
-
- if(unlikely(rrdset_index_del(&localhost, st) != st))
- error("RRDSET: INTERNAL ERROR: attempt to remove from index chart '%s', removed a different chart.", st->id);
-
- rrdset_index_del_name(&localhost, st);
-
- st->rrdfamily->use_count--;
- if(!st->rrdfamily->use_count)
- rrdfamily_free(st->rrdfamily);
-
- pthread_rwlock_unlock(&st->rwlock);
-
- if(st->mapped == RRD_MEMORY_MODE_SAVE || st->mapped == RRD_MEMORY_MODE_MAP) {
- debug(D_RRD_CALLS, "Unmapping stats '%s'.", st->name);
- munmap(st, st->memsize);
- }
- else
- freez(st);
-
- st = next;
- }
- localhost.rrdset_root = NULL;
-
- rrdhost_unlock(&localhost);
-
- info("Memory cleanup completed...");
-}
-
-void rrdset_save_all(void) {
- info("Saving database...");
-
- RRDSET *st;
- RRDDIM *rd;
-
- // we get an write lock
- // to ensure only one thread is saving the database
- rrdhost_rwlock(&localhost);
-
- for(st = localhost.rrdset_root; st ; st = st->next) {
- pthread_rwlock_rdlock(&st->rwlock);
-
- if(st->mapped == RRD_MEMORY_MODE_SAVE) {
- debug(D_RRD_CALLS, "Saving stats '%s' to '%s'.", st->name, st->cache_filename);
- savememory(st->cache_filename, st, st->memsize);
- }
-
- for(rd = st->dimensions; rd ; rd = rd->next) {
- if(likely(rd->mapped == RRD_MEMORY_MODE_SAVE)) {
- debug(D_RRD_CALLS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename);
- savememory(rd->cache_filename, rd, rd->memsize);
- }
- }
-
- pthread_rwlock_unlock(&st->rwlock);
- }
-
- rrdhost_unlock(&localhost);
-}
-
-
-RRDSET *rrdset_find(const char *id)
-{
- debug(D_RRD_CALLS, "rrdset_find() for chart %s", id);
-
- RRDSET *st = rrdset_index_find(&localhost, id, 0);
- return(st);
-}
-
-RRDSET *rrdset_find_bytype(const char *type, const char *id)
-{
- debug(D_RRD_CALLS, "rrdset_find_bytype() for chart %s.%s", type, id);
-
- 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(buf));
-}
-
-RRDSET *rrdset_find_byname(const char *name)
-{
- debug(D_RRD_CALLS, "rrdset_find_byname() for chart %s", name);
-
- RRDSET *st = rrdset_index_find_name(&localhost, name, 0);
- return(st);
-}
-
-RRDDIM *rrddim_find(RRDSET *st, const char *id)
-{
- debug(D_RRD_CALLS, "rrddim_find() for chart %s, dimension %s", st->name, id);
-
- return rrddim_index_find(st, id, 0);
-}
-
-int rrddim_hide(RRDSET *st, const char *id)
-{
- debug(D_RRD_CALLS, "rrddim_hide() for chart %s, dimension %s", st->name, id);
-
- RRDDIM *rd = rrddim_find(st, id);
- if(unlikely(!rd)) {
- error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id);
- return 1;
- }
-
- rd->flags |= RRDDIM_FLAG_HIDDEN;
- return 0;
-}
-
-int rrddim_unhide(RRDSET *st, const char *id)
-{
- debug(D_RRD_CALLS, "rrddim_unhide() for chart %s, dimension %s", st->name, id);
-
- RRDDIM *rd = rrddim_find(st, id);
- if(unlikely(!rd)) {
- error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id);
- return 1;
- }
-
- if(rd->flags & RRDDIM_FLAG_HIDDEN) rd->flags ^= RRDDIM_FLAG_HIDDEN;
- return 0;
-}
-
-collected_number rrddim_set_by_pointer(RRDSET *st, RRDDIM *rd, collected_number value)
-{
- debug(D_RRD_CALLS, "rrddim_set_by_pointer() for chart %s, dimension %s, value " COLLECTED_NUMBER_FORMAT, st->name, rd->name, value);
-
- now_realtime_timeval(&rd->last_collected_time);
- rd->collected_value = value;
- rd->updated = 1;
- rd->counter++;
-
- // fprintf(stderr, "%s.%s %llu " COLLECTED_NUMBER_FORMAT " dt %0.6f" " rate " CALCULATED_NUMBER_FORMAT "\n", st->name, rd->name, st->usec_since_last_update, value, (float)((double)st->usec_since_last_update / (double)1000000), (calculated_number)((value - rd->last_collected_value) * (calculated_number)rd->multiplier / (calculated_number)rd->divisor * 1000000.0 / (calculated_number)st->usec_since_last_update));
-
- return rd->last_collected_value;
-}
-
-collected_number rrddim_set(RRDSET *st, const char *id, collected_number value)
-{
- RRDDIM *rd = rrddim_find(st, id);
- if(unlikely(!rd)) {
- error("Cannot find dimension with id '%s' on stats '%s' (%s).", id, st->name, st->id);
- return 0;
- }
-
- return rrddim_set_by_pointer(st, rd, value);
-}
-
-void rrdset_next_usec_unfiltered(RRDSET *st, usec_t microseconds)
-{
- if(unlikely(!st->last_collected_time.tv_sec || !microseconds)) {
- // the first entry
- microseconds = st->update_every * USEC_PER_SEC;
- }
- st->usec_since_last_update = microseconds;
-}
-
-void rrdset_next_usec(RRDSET *st, usec_t microseconds)
-{
- struct timeval now;
- now_realtime_timeval(&now);
-
- if(unlikely(!st->last_collected_time.tv_sec)) {
- // the first entry
- microseconds = st->update_every * USEC_PER_SEC;
- }
- else if(unlikely(!microseconds)) {
- // no dt given by the plugin
- microseconds = dt_usec(&now, &st->last_collected_time);
- }
- else {
- // microseconds has the time since the last collection
-#ifdef NETDATA_INTERNAL_CHECKS
- usec_t now_usec = timeval_usec(&now);
- usec_t last_usec = timeval_usec(&st->last_collected_time);
-#endif
- usec_t since_last_usec = dt_usec(&now, &st->last_collected_time);
-
- // verify the microseconds given is good
- if(unlikely(microseconds > since_last_usec)) {
- debug(D_RRD_CALLS, "dt %llu usec given is too big - it leads %llu usec to the future, for chart '%s' (%s).", microseconds, microseconds - since_last_usec, st->name, st->id);
-
-#ifdef NETDATA_INTERNAL_CHECKS
- if(unlikely(last_usec + microseconds > now_usec + 1000))
- error("dt %llu usec given is too big - it leads %llu usec to the future, for chart '%s' (%s).", microseconds, microseconds - since_last_usec, st->name, st->id);
-#endif
-
- microseconds = since_last_usec;
- }
- else if(unlikely(microseconds < since_last_usec * 0.8)) {
- debug(D_RRD_CALLS, "dt %llu usec given is too small - expected %llu usec up to -20%%, for chart '%s' (%s).", microseconds, since_last_usec, st->name, st->id);
-
-#ifdef NETDATA_INTERNAL_CHECKS
- error("dt %llu usec given is too small - expected %llu usec up to -20%%, for chart '%s' (%s).", microseconds, since_last_usec, st->name, st->id);
-#endif
- microseconds = since_last_usec;
- }
- }
- debug(D_RRD_CALLS, "rrdset_next_usec() for chart %s with microseconds %llu", st->name, microseconds);
-
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: NEXT: %llu microseconds", st->name, microseconds);
- st->usec_since_last_update = microseconds;
-}
-
-usec_t rrdset_done(RRDSET *st)
-{
- if(unlikely(netdata_exit)) return 0;
-
- debug(D_RRD_CALLS, "rrdset_done() for chart %s", st->name);
-
- RRDDIM *rd;
-
- int
- pthreadoldcancelstate; // store the old cancelable pthread state, to restore it at the end
-
- 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
-
- unsigned int
- stored_entries = 0; // the number of entries we have stored in the db, during this call to rrdset_done()
-
- usec_t
- last_collect_ut, // the timestamp in microseconds, of the last collected value
- now_collect_ut, // the timestamp in microseconds, of this collected value (this is NOW)
- last_stored_ut, // the timestamp in microseconds, of the last stored entry in the db
- next_store_ut, // 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
-
- if(unlikely(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &pthreadoldcancelstate) != 0))
- error("Cannot set pthread cancel state to DISABLE.");
-
- // a read lock is OK here
- pthread_rwlock_rdlock(&st->rwlock);
-
-/*
- // enable the chart, if it was disabled
- if(unlikely(rrd_delete_unupdated_dimensions) && !st->enabled)
- st->enabled = 1;
-*/
-
- // check if the chart has a long time to be updated
- if(unlikely(st->usec_since_last_update > st->entries * update_every_ut)) {
- info("%s: took too long to be updated (%0.3Lf secs). Resetting it.", st->name, (long double)(st->usec_since_last_update / 1000000.0));
- rrdset_reset(st);
- st->usec_since_last_update = update_every_ut;
- first_entry = 1;
- }
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: microseconds since last update: %llu", st->name, st->usec_since_last_update);
-
- // set last_collected_time
- if(unlikely(!st->last_collected_time.tv_sec)) {
- // it is the first entry
- // set the last_collected_time to now
- now_realtime_timeval(&st->last_collected_time);
- timeval_align(&st->last_collected_time, st->update_every);
-
- last_collect_ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec - update_every_ut;
-
- // the first entry should not be stored
- store_this_entry = 0;
- first_entry = 1;
-
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: has not set last_collected_time. Setting it now. Will not store the next entry.", st->name);
- }
- else {
- // it is not the first entry
- // calculate the proper last_collected_time, using usec_since_last_update
- 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);
- }
-
- // 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
- usec_t ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec - st->usec_since_last_update;
- st->last_updated.tv_sec = (time_t) (ut / USEC_PER_SEC);
- st->last_updated.tv_usec = (suseconds_t) (ut % USEC_PER_SEC);
-
- // the first entry should not be stored
- store_this_entry = 0;
- first_entry = 1;
-
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: initializing last_updated to now - %llu microseconds (%0.3Lf). Will not store the next entry.", st->name, st->usec_since_last_update, (long double)ut/1000000.0);
- }
-
- // 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)) {
- info("%s: too old data (last updated at %ld.%ld, last collected at %ld.%ld). Resetting it. Will not store the next entry.", st->name, st->last_updated.tv_sec, st->last_updated.tv_usec, st->last_collected_time.tv_sec, st->last_collected_time.tv_usec);
- rrdset_reset(st);
-
- st->usec_since_last_update = update_every_ut;
-
- now_realtime_timeval(&st->last_collected_time);
- timeval_align(&st->last_collected_time, st->update_every);
-
- usec_t ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec - st->usec_since_last_update;
- st->last_updated.tv_sec = (time_t) (ut / USEC_PER_SEC);
- st->last_updated.tv_usec = (suseconds_t) (ut % USEC_PER_SEC);
-
- // the first entry should not be stored
- store_this_entry = 0;
- first_entry = 1;
- }
-
- // 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
- last_stored_ut = st->last_updated.tv_sec * USEC_PER_SEC + st->last_updated.tv_usec;
- now_collect_ut = st->last_collected_time.tv_sec * USEC_PER_SEC + st->last_collected_time.tv_usec;
- next_store_ut = (st->last_updated.tv_sec + st->update_every) * USEC_PER_SEC;
-
- if(unlikely(st->debug)) {
- debug(D_RRD_STATS, "%s: last_collect_ut = %0.3Lf (last collection time)", st->name, (long double)last_collect_ut/1000000.0);
- debug(D_RRD_STATS, "%s: now_collect_ut = %0.3Lf (current collection time)", st->name, (long double)now_collect_ut/1000000.0);
- debug(D_RRD_STATS, "%s: last_stored_ut = %0.3Lf (last updated time)", st->name, (long double)last_stored_ut/1000000.0);
- debug(D_RRD_STATS, "%s: next_store_ut = %0.3Lf (next interpolation point)", st->name, (long double)next_store_ut/1000000.0);
- }
-
- if(unlikely(!st->counter_done)) {
- store_this_entry = 0;
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: Will not store the next entry.", st->name);
- }
- st->counter_done++;
-
- // calculate totals and count the dimensions
- int dimensions;
- st->collected_total = 0;
- for( rd = st->dimensions, dimensions = 0 ; rd ; rd = rd->next, dimensions++ )
- if(likely(rd->updated)) st->collected_total += rd->collected_value;
-
- uint32_t storage_flags = SN_EXISTS;
-
- // process all dimensions to calculate their values
- // based on the collected figures only
- // at this stage we do not interpolate anything
- for( rd = st->dimensions ; rd ; rd = rd->next ) {
-
- if(unlikely(!rd->updated)) {
- rd->calculated_value = 0;
- continue;
- }
-
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: START "
- " last_collected_value = " COLLECTED_NUMBER_FORMAT
- " collected_value = " COLLECTED_NUMBER_FORMAT
- " last_calculated_value = " CALCULATED_NUMBER_FORMAT
- " calculated_value = " CALCULATED_NUMBER_FORMAT
- , st->id, rd->name
- , rd->last_collected_value
- , rd->collected_value
- , rd->last_calculated_value
- , rd->calculated_value
- );
-
- switch(rd->algorithm) {
- case RRDDIM_ABSOLUTE:
- rd->calculated_value = (calculated_number)rd->collected_value
- * (calculated_number)rd->multiplier
- / (calculated_number)rd->divisor;
-
- if(unlikely(st->debug))
- debug(D_RRD_STATS, "%s/%s: CALC ABS/ABS-NO-IN "
- CALCULATED_NUMBER_FORMAT " = "
- COLLECTED_NUMBER_FORMAT
- " * " CALCULATED_NUMBER_FORMAT
- " / " CALCULATED_NUMBER_FORMAT
- , st->id, rd->name
- , rd->calculated_value
- , rd->collected_value
- , (calculated_number)rd->multiplier
- , (calculated_number)rd->divisor
- );
- break;
-
- case RRDDIM_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 =
- (calculated_number)100
- * (calculated_number)rd->collected_value
- / (calculated_number)st->collected_total;
-
- if(unlikely(st->debug))
- debug(D_RRD_STATS, "%s/%s: CALC PCENT-ROW "
- CALCULATED_NUMBER_FORMAT " = 100"
- " * " COLLECTED_NUMBER_FORMAT
- " / " COLLECTED_NUMBER_FORMAT
- , st->id, rd->name
- , rd->calculated_value
- , rd->collected_value
- , st->collected_total
- );
- break;
-
- case RRDDIM_INCREMENTAL:
- if(unlikely(rd->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(!(rd->flags & RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS)) storage_flags = SN_EXISTS_RESET;
- rd->last_collected_value = rd->collected_value;
- }
-
- rd->calculated_value +=
- (calculated_number)(rd->collected_value - rd->last_collected_value)
- * (calculated_number)rd->multiplier
- / (calculated_number)rd->divisor;
-
- if(unlikely(st->debug))
- debug(D_RRD_STATS, "%s/%s: CALC INC PRE "
- CALCULATED_NUMBER_FORMAT " = ("
- COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT
- ")"
- " * " CALCULATED_NUMBER_FORMAT
- " / " CALCULATED_NUMBER_FORMAT
- , st->id, rd->name
- , rd->calculated_value
- , rd->collected_value, rd->last_collected_value
- , (calculated_number)rd->multiplier
- , (calculated_number)rd->divisor
- );
- break;
-
- case RRDDIM_PCENT_OVER_DIFF_TOTAL:
- if(unlikely(rd->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(!(rd->flags & RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS)) storage_flags = SN_EXISTS_RESET;
- 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 =
- (calculated_number)100
- * (calculated_number)(rd->collected_value - rd->last_collected_value)
- / (calculated_number)(st->collected_total - st->last_collected_total);
-
- if(unlikely(st->debug))
- debug(D_RRD_STATS, "%s/%s: CALC PCENT-DIFF "
- CALCULATED_NUMBER_FORMAT " = 100"
- " * (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")"
- " / (" COLLECTED_NUMBER_FORMAT " - " COLLECTED_NUMBER_FORMAT ")"
- , st->id, rd->name
- , rd->calculated_value
- , rd->collected_value, rd->last_collected_value
- , st->collected_total, st->last_collected_total
- );
- break;
-
- default:
- // make the default zero, to make sure
- // it gets noticed when we add new types
- rd->calculated_value = 0;
-
- if(unlikely(st->debug))
- debug(D_RRD_STATS, "%s/%s: CALC "
- CALCULATED_NUMBER_FORMAT " = 0"
- , st->id, rd->name
- , rd->calculated_value
- );
- break;
- }
-
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: PHASE2 "
- " last_collected_value = " COLLECTED_NUMBER_FORMAT
- " collected_value = " COLLECTED_NUMBER_FORMAT
- " last_calculated_value = " CALCULATED_NUMBER_FORMAT
- " calculated_value = " CALCULATED_NUMBER_FORMAT
- , st->id, rd->name
- , rd->last_collected_value
- , rd->collected_value
- , rd->last_calculated_value
- , rd->calculated_value
- );
-
- }
-
- // at this point we have all the calculated values ready
- // it is now time to interpolate values on a second boundary
-
- if(unlikely(now_collect_ut < next_store_ut)) {
- // this is collected in the same interpolation point
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: THIS IS IN THE SAME INTERPOLATION POINT", st->name);
-#ifdef NETDATA_INTERNAL_CHECKS
- info("%s is collected in the same interpolation point: short by %llu microseconds", st->name, next_store_ut - now_collect_ut);
-#endif
- }
-
- usec_t first_ut = last_stored_ut;
- long long iterations = (now_collect_ut - last_stored_ut) / (update_every_ut);
- if((now_collect_ut % (update_every_ut)) == 0) iterations++;
-
- 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("%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); }
-#endif
-
- if(unlikely(st->debug)) {
- debug(D_RRD_STATS, "%s: last_stored_ut = %0.3Lf (last updated time)", st->name, (long double)last_stored_ut/1000000.0);
- debug(D_RRD_STATS, "%s: next_store_ut = %0.3Lf (next interpolation point)", st->name, (long double)next_store_ut/1000000.0);
- }
-
- st->last_updated.tv_sec = (time_t) (next_store_ut / USEC_PER_SEC);
- st->last_updated.tv_usec = 0;
-
- for( rd = st->dimensions ; likely(rd) ; rd = rd->next ) {
- calculated_number new_value;
-
- switch(rd->algorithm) {
- case RRDDIM_INCREMENTAL:
- new_value = (calculated_number)
- ( rd->calculated_value
- * (calculated_number)(next_store_ut - last_collect_ut)
- / (calculated_number)(now_collect_ut - last_collect_ut)
- );
-
- if(unlikely(st->debug))
- debug(D_RRD_STATS, "%s/%s: CALC2 INC "
- CALCULATED_NUMBER_FORMAT " = "
- CALCULATED_NUMBER_FORMAT
- " * %llu"
- " / %llu"
- , st->id, rd->name
- , new_value
- , rd->calculated_value
- , (next_store_ut - last_stored_ut)
- , (now_collect_ut - last_stored_ut)
- );
-
- rd->calculated_value -= new_value;
- new_value += rd->last_calculated_value;
- rd->last_calculated_value = 0;
- new_value /= (calculated_number)st->update_every;
-
- if(unlikely(next_store_ut - last_stored_ut < update_every_ut)) {
- if(unlikely(st->debug))
- debug(D_RRD_STATS, "%s/%s: COLLECTION POINT IS SHORT " CALCULATED_NUMBER_FORMAT " - EXTRAPOLATING",
- st->id, rd->name
- , (calculated_number)(next_store_ut - last_stored_ut)
- );
- new_value = new_value * (calculated_number)(st->update_every * 1000000) / (calculated_number)(next_store_ut - last_stored_ut);
- }
- break;
-
- case RRDDIM_ABSOLUTE:
- case RRDDIM_PCENT_OVER_ROW_TOTAL:
- case RRDDIM_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 = (calculated_number)
- ( ( (rd->calculated_value - rd->last_calculated_value)
- * (calculated_number)(next_store_ut - last_collect_ut)
- / (calculated_number)(now_collect_ut - last_collect_ut)
- )
- + rd->last_calculated_value
- );
-
- if(unlikely(st->debug))
- debug(D_RRD_STATS, "%s/%s: CALC2 DEF "
- CALCULATED_NUMBER_FORMAT " = ((("
- "(" CALCULATED_NUMBER_FORMAT " - " CALCULATED_NUMBER_FORMAT ")"
- " * %llu"
- " / %llu) + " CALCULATED_NUMBER_FORMAT
- , st->id, 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
- );
- }
- break;
- }
-
- if(unlikely(!store_this_entry)) {
- rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS);
- continue;
- }
-
- if(likely(rd->updated && rd->counter > 1 && iterations < st->gap_when_lost_iterations_above)) {
- rd->values[st->current_entry] = pack_storage_number(new_value, storage_flags );
- rd->last_stored_value = new_value;
-
- if(unlikely(st->debug))
- debug(D_RRD_STATS, "%s/%s: STORE[%ld] "
- CALCULATED_NUMBER_FORMAT " = " CALCULATED_NUMBER_FORMAT
- , st->id, rd->name
- , st->current_entry
- , unpack_storage_number(rd->values[st->current_entry]), new_value
- );
- }
- else {
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: STORE[%ld] = NON EXISTING "
- , st->id, rd->name
- , st->current_entry
- );
- rd->values[st->current_entry] = pack_storage_number(0, SN_NOT_EXISTS);
- rd->last_stored_value = NAN;
- }
-
- stored_entries++;
-
- if(unlikely(st->debug)) {
- calculated_number t1 = new_value * (calculated_number)rd->multiplier / (calculated_number)rd->divisor;
- calculated_number t2 = unpack_storage_number(rd->values[st->current_entry]);
- calculated_number accuracy = accuracy_loss(t1, t2);
- debug(D_RRD_STATS, "%s/%s: UNPACK[%ld] = " CALCULATED_NUMBER_FORMAT " FLAGS=0x%08x (original = " CALCULATED_NUMBER_FORMAT ", accuracy loss = " CALCULATED_NUMBER_FORMAT "%%%s)"
- , st->id, rd->name
- , st->current_entry
- , t2
- , get_storage_number_flags(rd->values[st->current_entry])
- , t1
- , accuracy
- , (accuracy > ACCURACY_LOSS) ? " **TOO BIG** " : ""
- );
-
- rd->collected_volume += t1;
- rd->stored_volume += t2;
- accuracy = accuracy_loss(rd->collected_volume, rd->stored_volume);
- debug(D_RRD_STATS, "%s/%s: VOLUME[%ld] = " CALCULATED_NUMBER_FORMAT ", calculated = " CALCULATED_NUMBER_FORMAT ", accuracy loss = " CALCULATED_NUMBER_FORMAT "%%%s"
- , st->id, rd->name
- , st->current_entry
- , rd->stored_volume
- , rd->collected_volume
- , accuracy
- , (accuracy > ACCURACY_LOSS) ? " **TOO BIG** " : ""
- );
-
- }
- }
- // reset the storage flags for the next point, if any;
- storage_flags = SN_EXISTS;
-
- st->counter++;
- st->current_entry = ((st->current_entry + 1) >= st->entries) ? 0 : st->current_entry + 1;
- last_stored_ut = next_store_ut;
- }
-
- st->last_collected_total = st->collected_total;
-
- for( rd = st->dimensions; rd ; rd = rd->next ) {
- if(unlikely(!rd->updated)) continue;
-
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: setting last_collected_value (old: " COLLECTED_NUMBER_FORMAT ") to last_collected_value (new: " COLLECTED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_collected_value, rd->collected_value);
- rd->last_collected_value = rd->collected_value;
-
- switch(rd->algorithm) {
- case RRDDIM_INCREMENTAL:
- if(unlikely(!first_entry)) {
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: setting last_calculated_value (old: " CALCULATED_NUMBER_FORMAT ") to last_calculated_value (new: " CALCULATED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_calculated_value + rd->calculated_value, rd->calculated_value);
- rd->last_calculated_value += rd->calculated_value;
- }
- else {
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: THIS IS THE FIRST POINT", st->name);
- }
- break;
-
- case RRDDIM_ABSOLUTE:
- case RRDDIM_PCENT_OVER_ROW_TOTAL:
- case RRDDIM_PCENT_OVER_DIFF_TOTAL:
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: setting last_calculated_value (old: " CALCULATED_NUMBER_FORMAT ") to last_calculated_value (new: " CALCULATED_NUMBER_FORMAT ")", st->id, rd->name, rd->last_calculated_value, rd->calculated_value);
- rd->last_calculated_value = rd->calculated_value;
- break;
- }
-
- rd->calculated_value = 0;
- rd->collected_value = 0;
- rd->updated = 0;
-
- if(unlikely(st->debug)) debug(D_RRD_STATS, "%s/%s: END "
- " last_collected_value = " COLLECTED_NUMBER_FORMAT
- " collected_value = " COLLECTED_NUMBER_FORMAT
- " last_calculated_value = " CALCULATED_NUMBER_FORMAT
- " calculated_value = " CALCULATED_NUMBER_FORMAT
- , st->id, rd->name
- , rd->last_collected_value
- , rd->collected_value
- , rd->last_calculated_value
- , rd->calculated_value
- );
- }
-
- // ALL DONE ABOUT THE DATA UPDATE
- // --------------------------------------------------------------------
-
-/*
- // find if there are any obsolete dimensions (not updated recently)
- if(unlikely(rrd_delete_unupdated_dimensions)) {
-
- for( rd = st->dimensions; likely(rd) ; rd = rd->next )
- if((rd->last_collected_time.tv_sec + (rrd_delete_unupdated_dimensions * st->update_every)) < st->last_collected_time.tv_sec)
- break;
-
- if(unlikely(rd)) {
- RRDDIM *last;
- // there is dimension to free
- // upgrade our read lock to a write lock
- pthread_rwlock_unlock(&st->rwlock);
- pthread_rwlock_wrlock(&st->rwlock);
-
- for( rd = st->dimensions, last = NULL ; likely(rd) ; ) {
- // remove it only it is not updated in rrd_delete_unupdated_dimensions seconds
-
- if(unlikely((rd->last_collected_time.tv_sec + (rrd_delete_unupdated_dimensions * st->update_every)) < st->last_collected_time.tv_sec)) {
- info("Removing obsolete dimension '%s' (%s) of '%s' (%s).", rd->name, rd->id, st->name, st->id);
-
- if(unlikely(!last)) {
- st->dimensions = rd->next;
- rd->next = NULL;
- rrddim_free(st, rd);
- rd = st->dimensions;
- continue;
- }
- else {
- last->next = rd->next;
- rd->next = NULL;
- rrddim_free(st, rd);
- rd = last->next;
- continue;
- }
- }
-
- last = rd;
- rd = rd->next;
- }
-
- if(unlikely(!st->dimensions)) {
- info("Disabling chart %s (%s) since it does not have any dimensions", st->name, st->id);
- st->enabled = 0;
- }
- }
- }
-*/
-
- pthread_rwlock_unlock(&st->rwlock);
-
- if(unlikely(pthread_setcancelstate(pthreadoldcancelstate, NULL) != 0))
- error("Cannot set pthread cancel state to RESTORE (%d).", pthreadoldcancelstate);
-
- return(st->usec_since_last_update);
-}
projects / netdata.git / blobdiff