diff options
Diffstat (limited to 'src/rrd.c')
| -rw-r--r-- | src/rrd.c | 1642 |
1 files changed, 65 insertions, 1577 deletions
@@ -1,7 +1,6 @@ +#define NETDATA_RRD_INTERNALS 1 #include "common.h" -#define RRD_DEFAULT_GAP_INTERPOLATIONS 1 - // ---------------------------------------------------------------------------- // globals @@ -12,402 +11,124 @@ 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 - -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)) +// RRD - chart types -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); +inline RRDSET_TYPE rrdset_type_id(const char *name) { + if(unlikely(strcmp(name, RRDSET_TYPE_AREA_NAME) == 0)) + return RRDSET_TYPE_AREA; - return (RRDDIM *)avl_search_lock(&(st->dimensions_index), (avl *) &tmp); -} - -// ---------------------------------------------------------------------------- -// chart types + else if(unlikely(strcmp(name, RRDSET_TYPE_STACKED_NAME) == 0)) + return RRDSET_TYPE_STACKED; -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; + else // if(unlikely(strcmp(name, RRDSET_TYPE_LINE_NAME) == 0)) + 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 +// RRD - cache directory -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 - -char *rrdset_cache_dir(const char *id) -{ +char *rrdset_cache_dir(RRDHOST *host, const char *id, const char *config_section) { char *ret = NULL; - static char *cache_dir = NULL; - if(!cache_dir) { - cache_dir = config_get("global", "cache directory", CACHE_DIR); - int r = mkdir(cache_dir, 0755); - if(r != 0 && errno != EEXIST) - error("Cannot create directory '%s'", cache_dir); - } - char b[FILENAME_MAX + 1]; char n[FILENAME_MAX + 1]; rrdset_strncpyz_name(b, id, FILENAME_MAX); - snprintfz(n, FILENAME_MAX, "%s/%s", 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); @@ -415,1236 +136,3 @@ char *rrdset_cache_dir(const char *id) 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) { - error("Cannot create rrd stats for '%s', it 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->algorithm != algorithm) { - errno = 0; - error("File %s does not have the same algorithm. 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) { - // 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 - usec_t now_usec = timeval_usec(&now); - usec_t last_usec = timeval_usec(&st->last_collected_time); - 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); -} |