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-rwxr-xr-xsrc/rrd.c1338
1 files changed, 1338 insertions, 0 deletions
diff --git a/src/rrd.c b/src/rrd.c
new file mode 100755
index 00000000..2dce02e6
--- /dev/null
+++ b/src/rrd.c
@@ -0,0 +1,1338 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stddef.h>
+#include <string.h>
+#include <unistd.h>
+#include <time.h>
+#include <sys/time.h>
+#include <sys/mman.h>
+#include <pthread.h>
+#include <errno.h>
+#include <ctype.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <stdlib.h>
+
+#include "common.h"
+#include "log.h"
+#include "appconfig.h"
+
+#include "rrd.h"
+
+#define RRD_DEFAULT_GAP_INTERPOLATIONS 1
+
+// ----------------------------------------------------------------------------
+// globals
+
+// if not zero it gives the time (in seconds) to remove un-updated dimensions
+// DO NOT ENABLE
+// if dimensions are removed, the chart generation will have to run again
+int rrd_delete_unupdated_dimensions = 0;
+
+int rrd_update_every = UPDATE_EVERY;
+int rrd_default_history_entries = RRD_DEFAULT_HISTORY_ENTRIES;
+
+RRDSET *rrdset_root = NULL;
+pthread_rwlock_t rrdset_root_rwlock = PTHREAD_RWLOCK_INITIALIZER;
+
+int rrd_memory_mode = RRD_MEMORY_MODE_SAVE;
+
+
+// ----------------------------------------------------------------------------
+// RRDSET index
+
+static int rrdset_iterator(avl *a) { if(a) {}; return 0; }
+
+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);
+}
+
+avl_tree rrdset_root_index = {
+ NULL,
+ rrdset_compare,
+#ifdef AVL_LOCK_WITH_MUTEX
+ PTHREAD_MUTEX_INITIALIZER
+#else
+ PTHREAD_RWLOCK_INITIALIZER
+#endif
+};
+
+#define rrdset_index_add(st) avl_insert(&rrdset_root_index, (avl *)(st))
+#define rrdset_index_del(st) avl_remove(&rrdset_root_index, (avl *)(st))
+
+static RRDSET *rrdset_index_find(const char *id, uint32_t hash) {
+ RRDSET *result = NULL, tmp;
+ strncpy(tmp.id, id, RRD_ID_LENGTH_MAX);
+ tmp.id[RRD_ID_LENGTH_MAX] = '\0';
+ tmp.hash = (hash)?hash:simple_hash(tmp.id);
+
+ avl_search(&(rrdset_root_index), (avl *)&tmp, rrdset_iterator, (avl **)&result);
+ return result;
+}
+
+// ----------------------------------------------------------------------------
+// RRDSET name index
+
+#define rrdset_from_avlname(avlname_ptr) ((RRDSET *)((avlname_ptr) - offsetof(RRDSET, avlname)))
+
+static int rrdset_iterator_name(avl *a) { if(a) {}; return 0; }
+
+static int rrdset_compare_name(void* a, void* b) {
+ RRDSET *A = rrdset_from_avlname(a);
+ RRDSET *B = rrdset_from_avlname(b);
+
+ // fprintf(stderr, "COMPARING: %s with %s\n", A->name, B->name);
+
+ if(A->hash_name < B->hash_name) return -1;
+ else if(A->hash_name > B->hash_name) return 1;
+ else return strcmp(A->name, B->name);
+}
+
+avl_tree rrdset_root_index_name = {
+ NULL,
+ rrdset_compare_name,
+#ifdef AVL_LOCK_WITH_MUTEX
+ PTHREAD_MUTEX_INITIALIZER
+#else
+ PTHREAD_RWLOCK_INITIALIZER
+#endif
+};
+
+int rrdset_index_add_name(RRDSET *st) {
+ // fprintf(stderr, "ADDING: %s (name: %s)\n", st->id, st->name);
+ return avl_insert(&rrdset_root_index_name, (avl *)(&st->avlname));
+}
+
+#define rrdset_index_del_name(st) avl_remove(&rrdset_root_index_name, (avl *)(&st->avlname))
+
+static RRDSET *rrdset_index_find_name(const char *name, uint32_t hash) {
+ void *result = NULL;
+ RRDSET tmp;
+ tmp.name = name;
+ tmp.hash_name = (hash)?hash:simple_hash(tmp.name);
+
+ // fprintf(stderr, "SEARCHING: %s\n", name);
+ avl_search(&(rrdset_root_index_name), (avl *)(&(tmp.avlname)), rrdset_iterator_name, (avl **)&result);
+ 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);
+
+ // fprintf(stderr, "FOUND: %s\n", name);
+ return rrdset_from_avlname(result);
+ }
+ // fprintf(stderr, "NOT FOUND: %s\n", name);
+ return NULL;
+}
+
+
+// ----------------------------------------------------------------------------
+// RRDDIM index
+
+static int rrddim_iterator(avl *a) { if(a) {}; return 0; }
+
+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) avl_insert(&((st)->dimensions_index), (avl *)(rd))
+#define rrddim_index_del(st,rd ) avl_remove(&((st)->dimensions_index), (avl *)(rd))
+
+static RRDDIM *rrddim_index_find(RRDSET *st, const char *id, uint32_t hash) {
+ RRDDIM *result = NULL, tmp;
+ strncpy(tmp.id, id, RRD_ID_LENGTH_MAX);
+ tmp.id[RRD_ID_LENGTH_MAX] = '\0';
+ tmp.hash = (hash)?hash:simple_hash(tmp.id);
+
+ avl_search(&(st->dimensions_index), (avl *)&tmp, rrddim_iterator, (avl **)&result);
+ return result;
+}
+
+// ----------------------------------------------------------------------------
+// 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;
+
+ switch(chart_type) {
+ case RRDSET_TYPE_LINE:
+ return line;
+
+ case RRDSET_TYPE_AREA:
+ return area;
+
+ case RRDSET_TYPE_STACKED:
+ return stacked;
+ }
+ 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_ABSOLUTE_NAME) == 0) return RRDDIM_ABSOLUTE;
+ if(strcmp(name, RRDDIM_INCREMENTAL_NAME) == 0) return RRDDIM_INCREMENTAL;
+ 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_strncpy_name(char *to, const char *from, int length)
+{
+ int i;
+ for(i = 0; i < length && from[i] ;i++) {
+ if(from[i] == '.' || isalpha(from[i]) || isdigit(from[i])) to[i] = from[i];
+ else to[i] = '_';
+ }
+ if(i < length) to[i] = '\0';
+ to[length - 1] = '\0';
+
+ return to;
+}
+
+void rrdset_set_name(RRDSET *st, const char *name)
+{
+ debug(D_RRD_CALLS, "rrdset_set_name() old: %s, new: %s", st->name, name);
+
+ if(st->name) rrdset_index_del_name(st);
+
+ char b[CONFIG_MAX_VALUE + 1];
+ char n[RRD_ID_LENGTH_MAX + 1];
+
+ snprintf(n, RRD_ID_LENGTH_MAX, "%s.%s", st->type, name);
+ rrdset_strncpy_name(b, n, CONFIG_MAX_VALUE);
+ st->name = config_get(st->id, "name", b);
+ st->hash_name = simple_hash(st->name);
+
+ rrdset_index_add_name(st);
+}
+
+// ----------------------------------------------------------------------------
+// cache directory
+
+char *rrdset_cache_dir(const char *id)
+{
+ char *ret = NULL;
+
+ static char *cache_dir = NULL;
+ if(!cache_dir) cache_dir = config_get("global", "cache directory", CACHE_DIR);
+
+ char b[FILENAME_MAX + 1];
+ char n[FILENAME_MAX + 1];
+ rrdset_strncpy_name(b, id, FILENAME_MAX);
+
+ snprintf(n, FILENAME_MAX, "%s/%s", cache_dir, b);
+ ret = config_get(id, "cache directory", n);
+
+ if(rrd_memory_mode == RRD_MEMORY_MODE_MAP || 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;
+ bzero(rd->values, rd->entries * sizeof(storage_number));
+ }
+}
+
+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];
+ RRDSET *st = NULL;
+
+ snprintf(fullid, RRD_ID_LENGTH_MAX, "%s.%s", type, id);
+
+ st = rrdset_find(fullid);
+ if(st) {
+ error("Cannot create rrd stats for '%s', it already exists.", fullid);
+ return st;
+ }
+
+ long entries = config_get_number(fullid, "history", rrd_default_history_entries);
+ if(entries < 5) entries = config_set_number(fullid, "history", 5);
+ if(entries > RRD_HISTORY_ENTRIES_MAX) entries = config_set_number(fullid, "history", RRD_HISTORY_ENTRIES_MAX);
+
+ 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);
+
+ snprintf(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);
+ bzero(st, 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;
+ bzero(st, size);
+ }
+ else if(st->memsize != size || st->entries != entries) {
+ errno = 0;
+ error("File %s does not have the desired size. Clearing it.", fullfilename);
+ bzero(st, size);
+ }
+ else if(st->update_every != update_every) {
+ errno = 0;
+ error("File %s does not have the desired update frequency. Clearing it.", fullfilename);
+ bzero(st, size);
+ }
+ else if((time(NULL) - st->last_updated.tv_sec) > update_every * entries) {
+ errno = 0;
+ error("File %s is too old. Clearing it.", fullfilename);
+ bzero(st, size);
+ }
+ }
+
+ 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;
+ }
+ else {
+ st = calloc(1, size);
+ if(!st) {
+ fatal("Cannot allocate memory for RRD_STATS %s.%s", type, id);
+ return NULL;
+ }
+ st->mapped = RRD_MEMORY_MODE_RAM;
+ }
+ st->memsize = size;
+ st->entries = entries;
+ st->update_every = update_every;
+
+ 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->context = config_get(st->id, "context", context?context:st->id);
+ st->units = config_get(st->id, "units", units?units:"");
+
+ st->priority = config_get_number(st->id, "priority", priority);
+ st->enabled = enabled;
+
+ st->isdetail = 0;
+ st->debug = 0;
+
+ 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(&st->dimensions_index, rrddim_compare);
+
+ pthread_rwlock_init(&st->rwlock, NULL);
+ pthread_rwlock_wrlock(&rrdset_root_rwlock);
+
+ if(name && *name) rrdset_set_name(st, name);
+ else rrdset_set_name(st, id);
+
+ {
+ char varvalue[CONFIG_MAX_VALUE + 1];
+ snprintf(varvalue, CONFIG_MAX_VALUE, "%s (%s)", title?title:"", st->name);
+ st->title = config_get(st->id, "title", varvalue);
+ }
+
+ st->next = rrdset_root;
+ rrdset_root = st;
+
+ rrdset_index_add(st);
+
+ pthread_rwlock_unlock(&rrdset_root_rwlock);
+
+ return(st);
+}
+
+RRDDIM *rrddim_add(RRDSET *st, const char *id, const char *name, long multiplier, long divisor, int algorithm)
+{
+ char filename[FILENAME_MAX + 1];
+ char fullfilename[FILENAME_MAX + 1];
+
+ char varname[CONFIG_MAX_NAME + 1];
+ RRDDIM *rd = NULL;
+ unsigned long size = sizeof(RRDDIM) + (st->entries * sizeof(storage_number));
+
+ debug(D_RRD_CALLS, "Adding dimension '%s/%s'.", st->id, id);
+
+ rrdset_strncpy_name(filename, id, FILENAME_MAX);
+ snprintf(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;
+ gettimeofday(&now, NULL);
+
+ if(strcmp(rd->magic, RRDDIMENSION_MAGIC) != 0) {
+ errno = 0;
+ info("Initializing file %s.", fullfilename);
+ bzero(rd, size);
+ }
+ else if(rd->memsize != size) {
+ errno = 0;
+ error("File %s does not have the desired size. Clearing it.", fullfilename);
+ bzero(rd, size);
+ }
+ else if(rd->multiplier != multiplier) {
+ errno = 0;
+ error("File %s does not have the same multiplier. Clearing it.", fullfilename);
+ bzero(rd, size);
+ }
+ else if(rd->divisor != divisor) {
+ errno = 0;
+ error("File %s does not have the same divisor. Clearing it.", fullfilename);
+ bzero(rd, size);
+ }
+ else if(rd->algorithm != algorithm) {
+ errno = 0;
+ error("File %s does not have the same algorithm. Clearing it.", fullfilename);
+ bzero(rd, size);
+ }
+ else if(rd->update_every != st->update_every) {
+ errno = 0;
+ error("File %s does not have the same refresh frequency. Clearing it.", fullfilename);
+ bzero(rd, size);
+ }
+ else if(usecdiff(&now, &rd->last_collected_time) > (rd->entries * rd->update_every * 1000000ULL)) {
+ errno = 0;
+ error("File %s is too old. Clearing it.", fullfilename);
+ bzero(rd, 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;
+ bzero(rd, size);
+ }
+ }
+
+ if(rd) {
+ // we have a file mapped for rd
+ rd->mapped = rrd_memory_mode;
+ rd->flags = 0x00000000;
+ rd->next = NULL;
+ rd->name = NULL;
+ }
+ else {
+ // if we didn't manage to get a mmap'd dimension, just create one
+
+ rd = calloc(1, size);
+ if(!rd) {
+ fatal("Cannot allocate RRD_DIMENSION %s/%s.", st->id, id);
+ return NULL;
+ }
+
+ rd->mapped = RRD_MEMORY_MODE_RAM;
+ }
+ rd->memsize = size;
+
+ strcpy(rd->magic, RRDDIMENSION_MAGIC);
+ strcpy(rd->cache_filename, fullfilename);
+ strncpy(rd->id, id, RRD_ID_LENGTH_MAX);
+ rd->hash = simple_hash(rd->id);
+
+ snprintf(varname, CONFIG_MAX_NAME, "dim %s name", rd->id);
+ rd->name = config_get(st->id, varname, (name && *name)?name:rd->id);
+
+ snprintf(varname, CONFIG_MAX_NAME, "dim %s algorithm", rd->id);
+ rd->algorithm = rrddim_algorithm_id(config_get(st->id, varname, rrddim_algorithm_name(algorithm)));
+
+ snprintf(varname, CONFIG_MAX_NAME, "dim %s multiplier", rd->id);
+ rd->multiplier = config_get_number(st->id, varname, multiplier);
+
+ snprintf(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;
+
+ // 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;
+ }
+ pthread_rwlock_unlock(&st->rwlock);
+
+ rrddim_index_add(st, rd);
+
+ return(rd);
+}
+
+void rrddim_set_name(RRDSET *st, RRDDIM *rd, const char *name)
+{
+ debug(D_RRD_CALLS, "rrddim_set_name() %s.%s", st->name, rd->name);
+
+ char varname[CONFIG_MAX_NAME + 1];
+ snprintf(varname, CONFIG_MAX_NAME, "dim %s name", rd->id);
+ config_set_default(st->id, varname, name);
+}
+
+void rrddim_free(RRDSET *st, RRDDIM *rd)
+{
+ debug(D_RRD_CALLS, "rrddim_free() %s.%s", st->name, rd->name);
+
+ RRDDIM *i, *last = NULL;
+ for(i = st->dimensions; i && i != rd ; i = i->next) last = i;
+
+ if(!i) {
+ error("Request to free dimension %s.%s but it is not linked.", st->id, rd->name);
+ return;
+ }
+
+ if(last) last->next = rd->next;
+ else st->dimensions = rd->next;
+ rd->next = NULL;
+
+ rrddim_index_del(st, rd);
+
+ // 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);
+ free(rd);
+ }
+}
+
+void rrdset_free_all(void)
+{
+ info("Freeing all memory...");
+
+ RRDSET *st;
+ for(st = rrdset_root; st ;) {
+ RRDSET *next = st->next;
+
+ while(st->dimensions)
+ rrddim_free(st, st->dimensions);
+
+ rrdset_index_del(st);
+
+ 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);
+
+ debug(D_RRD_CALLS, "Unmapping stats '%s'.", st->name);
+ munmap(st, st->memsize);
+ }
+ else if(st->mapped == RRD_MEMORY_MODE_MAP) {
+ debug(D_RRD_CALLS, "Unmapping stats '%s'.", st->name);
+ munmap(st, st->memsize);
+ }
+ else
+ free(st);
+
+ st = next;
+ }
+ rrdset_root = NULL;
+
+ info("Memory cleanup completed...");
+}
+
+void rrdset_save_all(void)
+{
+ debug(D_RRD_CALLS, "rrdset_save_all()");
+
+ RRDSET *st;
+ RRDDIM *rd;
+
+ pthread_rwlock_wrlock(&rrdset_root_rwlock);
+ for(st = rrdset_root; st ; st = st->next) {
+ pthread_rwlock_wrlock(&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);
+ }
+ pthread_rwlock_unlock(&rrdset_root_rwlock);
+}
+
+
+RRDSET *rrdset_find(const char *id)
+{
+ debug(D_RRD_CALLS, "rrdset_find() for chart %s", id);
+
+ RRDSET *st = rrdset_index_find(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];
+
+ strncpy(buf, type, RRD_ID_LENGTH_MAX - 1);
+ buf[RRD_ID_LENGTH_MAX - 1] = '\0';
+ strcat(buf, ".");
+ int len = (int) strlen(buf);
+ strncpy(&buf[len], id, (size_t) (RRD_ID_LENGTH_MAX - len));
+ buf[RRD_ID_LENGTH_MAX] = '\0';
+
+ 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(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);
+
+ gettimeofday(&rd->last_collected_time, NULL);
+ rd->collected_value = value;
+ rd->updated = 1;
+ rd->counter++;
+
+ 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(RRDSET *st, unsigned long long microseconds)
+{
+ if(!microseconds) rrdset_next(st);
+ else {
+ 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;
+ }
+}
+
+void rrdset_next(RRDSET *st)
+{
+ unsigned long long microseconds = 0;
+
+ if(likely(st->last_collected_time.tv_sec)) {
+ struct timeval now;
+ gettimeofday(&now, NULL);
+ microseconds = usecdiff(&now, &st->last_collected_time);
+ }
+ // prevent infinite loop
+ else microseconds = st->update_every * 1000000ULL;
+
+ rrdset_next_usec(st, microseconds);
+}
+
+void rrdset_next_plugins(RRDSET *st)
+{
+ rrdset_next(st);
+}
+
+unsigned long long rrdset_done(RRDSET *st)
+{
+ debug(D_RRD_CALLS, "rrdset_done() for chart %s", st->name);
+
+ RRDDIM *rd, *last;
+ int oldstate, store_this_entry = 1, first_entry = 0;
+ unsigned long long last_ut, now_ut, next_ut, stored_entries = 0;
+
+ if(unlikely(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &oldstate) != 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
+ st->enabled = 1;
+
+ // check if the chart has a long time to be updated
+ if(unlikely(st->usec_since_last_update > st->entries * st->update_every * 1000000ULL)) {
+ info("%s: took too long to be updated (%0.3Lf secs). Reseting it.", st->name, (long double)(st->usec_since_last_update / 1000000.0));
+ rrdset_reset(st);
+ st->usec_since_last_update = st->update_every * 1000000ULL;
+ 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
+ gettimeofday(&st->last_collected_time, NULL);
+
+ // 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
+ unsigned long long ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec + st->usec_since_last_update;
+ st->last_collected_time.tv_sec = (time_t) (ut / 1000000ULL);
+ st->last_collected_time.tv_usec = (useconds_t) (ut % 1000000ULL);
+ }
+
+ // 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
+ unsigned long long ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec - st->usec_since_last_update;
+ st->last_updated.tv_sec = (time_t) (ut / 1000000ULL);
+ st->last_updated.tv_usec = (useconds_t) (ut % 1000000ULL);
+
+ // 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(usecdiff(&st->last_collected_time, &st->last_updated) > st->update_every * st->entries * 1000000ULL)) {
+ info("%s: too old data (last updated at %u.%u, last collected at %u.%u). Reseting 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 = st->update_every * 1000000ULL;
+
+ gettimeofday(&st->last_collected_time, NULL);
+
+ unsigned long long ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec - st->usec_since_last_update;
+ st->last_updated.tv_sec = (time_t) (ut / 1000000ULL);
+ st->last_updated.tv_usec = (useconds_t) (ut % 1000000ULL);
+
+ // 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_ut = the last time we added a value to the storage
+ // now_ut = the time the current value is taken at
+ // next_ut = the time of the next interpolation point
+ last_ut = st->last_updated.tv_sec * 1000000ULL + st->last_updated.tv_usec;
+ now_ut = st->last_collected_time.tv_sec * 1000000ULL + st->last_collected_time.tv_usec;
+ next_ut = (st->last_updated.tv_sec + st->update_every) * 1000000ULL;
+
+ if(unlikely(!first_entry && now_ut < next_ut)) {
+ if(unlikely(st->debug)) debug(D_RRD_STATS, "%s: THIS IS IN THE SAME INTERPOLATION POINT", st->name);
+ }
+
+ if(unlikely(st->debug)) {
+ debug(D_RRD_STATS, "%s: last ut = %0.3Lf (last updated time)", st->name, (long double)last_ut/1000000.0);
+ debug(D_RRD_STATS, "%s: now ut = %0.3Lf (current update time)", st->name, (long double)now_ut/1000000.0);
+ debug(D_RRD_STATS, "%s: next ut = %0.3Lf (next interpolation point)", st->name, (long double)next_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 ; likely(rd) ; rd = rd->next, dimensions++ )
+ 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 ; likely(rd) ; rd = rd->next ) {
+
+ 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->updated || 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->updated || rd->counter <= 1)) {
+ rd->calculated_value = 0;
+ continue;
+ }
+
+ // 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 = rd->last_calculated_value;
+ 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
+
+ unsigned long long first_ut = last_ut;
+ long long iterations = (now_ut - last_ut) / (st->update_every * 1000000ULL);
+ if((now_ut % (st->update_every * 1000000ULL)) == 0) iterations++;
+
+ for( ; likely(next_ut <= now_ut) ; next_ut += st->update_every * 1000000ULL, iterations-- ) {
+#ifdef NETDATA_INTERNAL_CHECKS
+ if(iterations < 0) { error("%s: iterations calculation wrapped! first_ut = %llu, last_ut = %llu, next_ut = %llu, now_ut = %llu", st->name, first_ut, last_ut, next_ut, now_ut); }
+#endif
+
+ if(unlikely(st->debug)) {
+ debug(D_RRD_STATS, "%s: last ut = %0.3Lf (last updated time)", st->name, (long double)last_ut/1000000.0);
+ debug(D_RRD_STATS, "%s: next ut = %0.3Lf (next interpolation point)", st->name, (long double)next_ut/1000000.0);
+ }
+
+ st->last_updated.tv_sec = (time_t) (next_ut / 1000000ULL);
+ 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_ut - last_ut)
+ / (calculated_number)(now_ut - last_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_ut - last_ut)
+ , (now_ut - last_ut)
+ );
+
+ rd->calculated_value -= new_value;
+ new_value += rd->last_calculated_value;
+ rd->last_calculated_value = 0;
+ new_value /= (calculated_number)st->update_every;
+ 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_ut - first_ut)
+ / (calculated_number)(now_ut - first_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_ut - first_ut)
+ , (now_ut - first_ut), rd->last_calculated_value
+ );
+
+ // this is wrong
+ // it fades the value towards the target
+ // while we know the calculated value is different
+ // if(likely(next_ut + st->update_every * 1000000ULL > now_ut)) rd->calculated_value = new_value;
+ }
+ break;
+ }
+
+ if(unlikely(!store_this_entry)) {
+ store_this_entry = 1;
+ 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 );
+
+ 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);
+ }
+
+ 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_ut = next_ut;
+ }
+
+ // align next interpolation to last collection point
+ if(likely(stored_entries || !store_this_entry)) {
+ st->last_updated.tv_sec = st->last_collected_time.tv_sec;
+ st->last_updated.tv_usec = st->last_collected_time.tv_usec;
+ }
+
+ for( rd = st->dimensions; likely(rd) ; rd = rd->next ) {
+ if(unlikely(!rd->updated)) continue;
+
+ if(likely(stored_entries || !store_this_entry)) {
+ 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;
+
+ 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;
+ }
+
+ 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
+ );
+ }
+ st->last_collected_total = st->collected_total;
+
+ // 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)) {
+ // 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(oldstate, NULL) != 0))
+ error("Cannot set pthread cancel state to RESTORE (%d).", oldstate);
+
+ return(st->usec_since_last_update);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 21:50:23 +0000