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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2022-08-12 07:26:11 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2022-08-12 07:26:11 +0000 |
commit | 3c315f0fff93aa072472abc10815963ac0035268 (patch) | |
tree | a95f6a96e0e7bd139c010f8dc60b40e5b3062a99 /database/ram | |
parent | Adding upstream version 1.35.1. (diff) | |
download | netdata-3c315f0fff93aa072472abc10815963ac0035268.tar.xz netdata-3c315f0fff93aa072472abc10815963ac0035268.zip |
Adding upstream version 1.36.0.upstream/1.36.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | database/ram/Makefile.am | 11 | ||||
-rw-r--r-- | database/ram/README.md | 7 | ||||
-rw-r--r-- | database/ram/rrddim_mem.c | 205 | ||||
-rw-r--r-- | database/ram/rrddim_mem.h | 34 |
4 files changed, 222 insertions, 35 deletions
diff --git a/database/ram/Makefile.am b/database/ram/Makefile.am new file mode 100644 index 000000000..59250a997 --- /dev/null +++ b/database/ram/Makefile.am @@ -0,0 +1,11 @@ +# SPDX-License-Identifier: GPL-3.0-or-later + +AUTOMAKE_OPTIONS = subdir-objects +MAINTAINERCLEANFILES = $(srcdir)/Makefile.in + +SUBDIRS = \ + $(NULL) + +dist_noinst_DATA = \ + README.md \ + $(NULL) diff --git a/database/ram/README.md b/database/ram/README.md new file mode 100644 index 000000000..73562f0ff --- /dev/null +++ b/database/ram/README.md @@ -0,0 +1,7 @@ +<!-- +title: "RAM database modes" +description: "Netdata's RAM database modes." +custom_edit_url: https://github.com/netdata/netdata/edit/master/database/ram/README.md +--> + +# RAM modes
\ No newline at end of file diff --git a/database/ram/rrddim_mem.c b/database/ram/rrddim_mem.c index b17f03ca5..3226d3c0d 100644 --- a/database/ram/rrddim_mem.c +++ b/database/ram/rrddim_mem.c @@ -5,63 +5,218 @@ // ---------------------------------------------------------------------------- // RRDDIM legacy data collection functions -void rrddim_collect_init(RRDDIM *rd) { - rd->values[rd->rrdset->current_entry] = SN_EMPTY_SLOT; - rd->state->handle = calloc(1, sizeof(struct mem_collect_handle)); +STORAGE_METRIC_HANDLE *rrddim_metric_init(RRDDIM *rd, STORAGE_INSTANCE *db_instance __maybe_unused) { + return (STORAGE_METRIC_HANDLE *)rd; } -void rrddim_collect_store_metric(RRDDIM *rd, usec_t point_in_time, storage_number number) { - (void)point_in_time; - rd->values[rd->rrdset->current_entry] = number; + +void rrddim_metric_free(STORAGE_METRIC_HANDLE *db_metric_handle __maybe_unused) { + ; +} + +STORAGE_COLLECT_HANDLE *rrddim_collect_init(STORAGE_METRIC_HANDLE *db_metric_handle) { + RRDDIM *rd = (RRDDIM *)db_metric_handle; + rd->db[rd->rrdset->current_entry] = pack_storage_number(NAN, SN_FLAG_NONE); + struct mem_collect_handle *ch = calloc(1, sizeof(struct mem_collect_handle)); + ch->rd = rd; + return (STORAGE_COLLECT_HANDLE *)ch; +} + +void rrddim_collect_store_metric(STORAGE_COLLECT_HANDLE *collection_handle, usec_t point_in_time, NETDATA_DOUBLE number, + NETDATA_DOUBLE min_value, + NETDATA_DOUBLE max_value, + uint16_t count, + uint16_t anomaly_count, + SN_FLAGS flags) +{ + UNUSED(point_in_time); + UNUSED(min_value); + UNUSED(max_value); + UNUSED(count); + UNUSED(anomaly_count); + + struct mem_collect_handle *ch = (struct mem_collect_handle *)collection_handle; + RRDDIM *rd = ch->rd; + rd->db[rd->rrdset->current_entry] = pack_storage_number(number, flags); +} + +void rrddim_store_metric_flush(STORAGE_COLLECT_HANDLE *collection_handle) { + struct mem_collect_handle *ch = (struct mem_collect_handle *)collection_handle; + RRDDIM *rd = ch->rd; + memset(rd->db, 0, rd->entries * sizeof(storage_number)); } -int rrddim_collect_finalize(RRDDIM *rd) { - free((struct mem_collect_handle*)rd->state->handle); + +int rrddim_collect_finalize(STORAGE_COLLECT_HANDLE *collection_handle) { + free(collection_handle); return 0; } // ---------------------------------------------------------------------------- + +// get the total duration in seconds of the round robin database +#define rrddim_duration(st) (( (time_t)(rd)->rrdset->counter >= (time_t)(rd)->rrdset->entries ? (time_t)(rd)->rrdset->entries : (time_t)(rd)->rrdset->counter ) * (time_t)(rd)->rrdset->update_every) + +// get the last slot updated in the round robin database +#define rrddim_last_slot(rd) ((size_t)(((rd)->rrdset->current_entry == 0) ? (rd)->rrdset->entries - 1 : (rd)->rrdset->current_entry - 1)) + +// return the slot that has the oldest value +#define rrddim_first_slot(rd) ((size_t)((rd)->rrdset->counter >= (size_t)(rd)->rrdset->entries ? (rd)->rrdset->current_entry : 0)) + +// get the slot of the round robin database, for the given timestamp (t) +// it always returns a valid slot, although may not be for the time requested if the time is outside the round robin database +// only valid when not using dbengine +static inline size_t rrddim_time2slot(RRDDIM *rd, time_t t) { + size_t ret = 0; + time_t last_entry_t = rrddim_query_latest_time((STORAGE_METRIC_HANDLE *)rd); + time_t first_entry_t = rrddim_query_oldest_time((STORAGE_METRIC_HANDLE *)rd); + size_t entries = rd->rrdset->entries; + size_t first_slot = rrddim_first_slot(rd); + size_t last_slot = rrddim_last_slot(rd); + size_t update_every = rd->rrdset->update_every; + + if(t >= last_entry_t) { + // the requested time is after the last entry we have + ret = last_slot; + } + else { + if(t <= first_entry_t) { + // the requested time is before the first entry we have + ret = first_slot; + } + else { + if(last_slot >= (size_t)((last_entry_t - t) / update_every)) + ret = last_slot - ((last_entry_t - t) / update_every); + else + ret = last_slot - ((last_entry_t - t) / update_every) + entries; + } + } + + if(unlikely(ret >= entries)) { + error("INTERNAL ERROR: rrddim_time2slot() on %s returns values outside entries", rd->name); + ret = entries - 1; + } + + return ret; +} + +// get the timestamp of a specific slot in the round robin database +// only valid when not using dbengine +static inline time_t rrddim_slot2time(RRDDIM *rd, size_t slot) { + time_t ret; + time_t last_entry_t = rrddim_query_latest_time((STORAGE_METRIC_HANDLE *)rd); + time_t first_entry_t = rrddim_query_oldest_time((STORAGE_METRIC_HANDLE *)rd); + size_t entries = rd->rrdset->entries; + size_t last_slot = rrddim_last_slot(rd); + size_t update_every = rd->rrdset->update_every; + + if(slot >= entries) { + error("INTERNAL ERROR: caller of rrddim_slot2time() gives invalid slot %zu", slot); + slot = entries - 1; + } + + if(slot > last_slot) + ret = last_entry_t - (time_t)(update_every * (last_slot - slot + entries)); + else + ret = last_entry_t - (time_t)(update_every * (last_slot - slot)); + + if(unlikely(ret < first_entry_t)) { + error("INTERNAL ERROR: rrddim_slot2time() on %s returns time too far in the past", rd->name); + ret = first_entry_t; + } + + if(unlikely(ret > last_entry_t)) { + error("INTERNAL ERROR: rrddim_slot2time() on %s returns time into the future", rd->name); + ret = last_entry_t; + } + + return ret; +} + +// ---------------------------------------------------------------------------- // RRDDIM legacy database query functions -void rrddim_query_init(RRDDIM *rd, struct rrddim_query_handle *handle, time_t start_time, time_t end_time) { +void rrddim_query_init(STORAGE_METRIC_HANDLE *db_metric_handle, struct rrddim_query_handle *handle, time_t start_time, time_t end_time, TIER_QUERY_FETCH tier_query_fetch_type) { + UNUSED(tier_query_fetch_type); + + RRDDIM *rd = (RRDDIM *)db_metric_handle; + handle->rd = rd; handle->start_time = start_time; handle->end_time = end_time; struct mem_query_handle* h = calloc(1, sizeof(struct mem_query_handle)); - h->slot = rrdset_time2slot(rd->rrdset, start_time); - h->last_slot = rrdset_time2slot(rd->rrdset, end_time); - h->finished = 0; + h->slot = rrddim_time2slot(rd, start_time); + h->last_slot = rrddim_time2slot(rd, end_time); + h->dt = rd->rrdset->update_every; + + h->next_timestamp = start_time; + h->slot_timestamp = rrddim_slot2time(rd, h->slot); + h->last_timestamp = rrddim_slot2time(rd, h->last_slot); + + // info("RRDDIM QUERY INIT: start %ld, end %ld, next %ld, first %ld, last %ld, dt %ld", start_time, end_time, h->next_timestamp, h->slot_timestamp, h->last_timestamp, h->dt); + handle->handle = (STORAGE_QUERY_HANDLE *)h; } -storage_number rrddim_query_next_metric(struct rrddim_query_handle *handle, time_t *current_time) { +// Returns the metric and sets its timestamp into current_time +// IT IS REQUIRED TO **ALWAYS** SET ALL RETURN VALUES (current_time, end_time, flags) +// IT IS REQUIRED TO **ALWAYS** KEEP TRACK OF TIME, EVEN OUTSIDE THE DATABASE BOUNDARIES +STORAGE_POINT rrddim_query_next_metric(struct rrddim_query_handle *handle) { RRDDIM *rd = handle->rd; struct mem_query_handle* h = (struct mem_query_handle*)handle->handle; - long entries = rd->rrdset->entries; - long slot = h->slot; + size_t entries = rd->rrdset->entries; + size_t slot = h->slot; + + STORAGE_POINT sp; + sp.count = 1; + + time_t this_timestamp = h->next_timestamp; + h->next_timestamp += h->dt; - (void)current_time; - if (unlikely(h->slot == h->last_slot)) - h->finished = 1; - storage_number n = rd->values[slot++]; + // set this timestamp for our caller + sp.start_time = this_timestamp - h->dt; + sp.end_time = this_timestamp; + if(unlikely(this_timestamp < h->slot_timestamp)) { + storage_point_empty(sp, sp.start_time, sp.end_time); + return sp; + } + + if(unlikely(this_timestamp > h->last_timestamp)) { + storage_point_empty(sp, sp.start_time, sp.end_time); + return sp; + } + + storage_number n = rd->db[slot++]; if(unlikely(slot >= entries)) slot = 0; + h->slot = slot; + h->slot_timestamp += h->dt; + + sp.anomaly_count = is_storage_number_anomalous(n) ? 1 : 0; + sp.flags = (n & SN_USER_FLAGS); + sp.min = sp.max = sp.sum = unpack_storage_number(n); - return n; + return sp; } int rrddim_query_is_finished(struct rrddim_query_handle *handle) { struct mem_query_handle* h = (struct mem_query_handle*)handle->handle; - return h->finished; + return (h->next_timestamp > handle->end_time); } void rrddim_query_finalize(struct rrddim_query_handle *handle) { +#ifdef NETDATA_INTERNAL_CHECKS + if(!rrddim_query_is_finished(handle)) + error("QUERY: query for chart '%s' dimension '%s' has been stopped unfinished", handle->rd->rrdset->id, handle->rd->name); +#endif freez(handle->handle); } -time_t rrddim_query_latest_time(RRDDIM *rd) { - return rrdset_last_entry_t_nolock(rd->rrdset); +time_t rrddim_query_latest_time(STORAGE_METRIC_HANDLE *db_metric_handle) { + RRDDIM *rd = (RRDDIM *)db_metric_handle; + return rd->rrdset->last_updated.tv_sec; } -time_t rrddim_query_oldest_time(RRDDIM *rd) { - return rrdset_first_entry_t_nolock(rd->rrdset); +time_t rrddim_query_oldest_time(STORAGE_METRIC_HANDLE *db_metric_handle) { + RRDDIM *rd = (RRDDIM *)db_metric_handle; + return (time_t)(rd->rrdset->last_updated.tv_sec - rrddim_duration(rd)); } diff --git a/database/ram/rrddim_mem.h b/database/ram/rrddim_mem.h index 9a215387a..400bdd0c2 100644 --- a/database/ram/rrddim_mem.h +++ b/database/ram/rrddim_mem.h @@ -6,24 +6,38 @@ #include "database/rrd.h" struct mem_collect_handle { + RRDDIM *rd; long slot; long entries; }; + struct mem_query_handle { - long slot; - long last_slot; - uint8_t finished; + time_t dt; + time_t next_timestamp; + time_t last_timestamp; + time_t slot_timestamp; + size_t slot; + size_t last_slot; }; -extern void rrddim_collect_init(RRDDIM *rd); -extern void rrddim_collect_store_metric(RRDDIM *rd, usec_t point_in_time, storage_number number); -extern int rrddim_collect_finalize(RRDDIM *rd); +extern STORAGE_METRIC_HANDLE *rrddim_metric_init(RRDDIM *rd, STORAGE_INSTANCE *db_instance); +extern void rrddim_metric_free(STORAGE_METRIC_HANDLE *db_metric_handle); + +extern STORAGE_COLLECT_HANDLE *rrddim_collect_init(STORAGE_METRIC_HANDLE *db_metric_handle); +extern void rrddim_collect_store_metric(STORAGE_COLLECT_HANDLE *collection_handle, usec_t point_in_time, NETDATA_DOUBLE number, + NETDATA_DOUBLE min_value, + NETDATA_DOUBLE max_value, + uint16_t count, + uint16_t anomaly_count, + SN_FLAGS flags); +extern void rrddim_store_metric_flush(STORAGE_COLLECT_HANDLE *collection_handle); +extern int rrddim_collect_finalize(STORAGE_COLLECT_HANDLE *collection_handle); -extern void rrddim_query_init(RRDDIM *rd, struct rrddim_query_handle *handle, time_t start_time, time_t end_time); -extern storage_number rrddim_query_next_metric(struct rrddim_query_handle *handle, time_t *current_time); +extern void rrddim_query_init(STORAGE_METRIC_HANDLE *db_metric_handle, struct rrddim_query_handle *handle, time_t start_time, time_t end_time, TIER_QUERY_FETCH tier_query_fetch_type); +extern STORAGE_POINT rrddim_query_next_metric(struct rrddim_query_handle *handle); extern int rrddim_query_is_finished(struct rrddim_query_handle *handle); extern void rrddim_query_finalize(struct rrddim_query_handle *handle); -extern time_t rrddim_query_latest_time(RRDDIM *rd); -extern time_t rrddim_query_oldest_time(RRDDIM *rd); +extern time_t rrddim_query_latest_time(STORAGE_METRIC_HANDLE *db_metric_handle); +extern time_t rrddim_query_oldest_time(STORAGE_METRIC_HANDLE *db_metric_handle); #endif |