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-rw-r--r--web/api/queries/ses/ses.h92
1 files changed, 0 insertions, 92 deletions
diff --git a/web/api/queries/ses/ses.h b/web/api/queries/ses/ses.h
deleted file mode 100644
index de8645ff..00000000
--- a/web/api/queries/ses/ses.h
+++ /dev/null
@@ -1,92 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#ifndef NETDATA_API_QUERIES_SES_H
-#define NETDATA_API_QUERIES_SES_H
-
-#include "../query.h"
-#include "../rrdr.h"
-
-struct tg_ses {
- NETDATA_DOUBLE alpha;
- NETDATA_DOUBLE alpha_other;
- NETDATA_DOUBLE level;
- size_t count;
-};
-
-static size_t tg_ses_max_window_size = 15;
-
-static inline void tg_ses_init(void) {
- long long ret = config_get_number(CONFIG_SECTION_WEB, "ses max tg_des_window", (long long)tg_ses_max_window_size);
- if(ret <= 1) {
- config_set_number(CONFIG_SECTION_WEB, "ses max tg_des_window", (long long)tg_ses_max_window_size);
- }
- else {
- tg_ses_max_window_size = (size_t) ret;
- }
-}
-
-static inline NETDATA_DOUBLE tg_ses_window(RRDR *r, struct tg_ses *g) {
- (void)g;
-
- NETDATA_DOUBLE points;
- if(r->view.group == 1) {
- // provide a running DES
- points = (NETDATA_DOUBLE)r->time_grouping.points_wanted;
- }
- else {
- // provide a SES with flush points
- points = (NETDATA_DOUBLE)r->view.group;
- }
-
- return (points > (NETDATA_DOUBLE)tg_ses_max_window_size) ? (NETDATA_DOUBLE)tg_ses_max_window_size : points;
-}
-
-static inline void tg_ses_set_alpha(RRDR *r, struct tg_ses *g) {
- // https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average
- // A commonly used value for alpha is 2 / (N + 1)
- g->alpha = 2.0 / (tg_ses_window(r, g) + 1.0);
- g->alpha_other = 1.0 - g->alpha;
-}
-
-static inline void tg_ses_create(RRDR *r, const char *options __maybe_unused) {
- struct tg_ses *g = (struct tg_ses *)onewayalloc_callocz(r->internal.owa, 1, sizeof(struct tg_ses));
- tg_ses_set_alpha(r, g);
- g->level = 0.0;
- r->time_grouping.data = g;
-}
-
-// resets when switches dimensions
-// so, clear everything to restart
-static inline void tg_ses_reset(RRDR *r) {
- struct tg_ses *g = (struct tg_ses *)r->time_grouping.data;
- g->level = 0.0;
- g->count = 0;
-}
-
-static inline void tg_ses_free(RRDR *r) {
- onewayalloc_freez(r->internal.owa, r->time_grouping.data);
- r->time_grouping.data = NULL;
-}
-
-static inline void tg_ses_add(RRDR *r, NETDATA_DOUBLE value) {
- struct tg_ses *g = (struct tg_ses *)r->time_grouping.data;
-
- if(unlikely(!g->count))
- g->level = value;
-
- g->level = g->alpha * value + g->alpha_other * g->level;
- g->count++;
-}
-
-static inline NETDATA_DOUBLE tg_ses_flush(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
- struct tg_ses *g = (struct tg_ses *)r->time_grouping.data;
-
- if(unlikely(!g->count || !netdata_double_isnumber(g->level))) {
- *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
- return 0.0;
- }
-
- return g->level;
-}
-
-#endif //NETDATA_API_QUERIES_SES_H