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-rw-r--r--database/ram/Makefile.am11
-rw-r--r--database/ram/README.md7
-rw-r--r--database/ram/rrddim_mem.c277
-rw-r--r--database/ram/rrddim_mem.h49
4 files changed, 344 insertions, 0 deletions
diff --git a/database/ram/Makefile.am b/database/ram/Makefile.am
new file mode 100644
index 0000000..59250a9
--- /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 0000000..73562f0
--- /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
new file mode 100644
index 0000000..299b655
--- /dev/null
+++ b/database/ram/rrddim_mem.c
@@ -0,0 +1,277 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "rrddim_mem.h"
+#include "Judy.h"
+
+static Pvoid_t rrddim_JudyHS_array = NULL;
+static netdata_rwlock_t rrddim_JudyHS_rwlock = NETDATA_RWLOCK_INITIALIZER;
+
+// ----------------------------------------------------------------------------
+// metrics groups
+
+STORAGE_METRICS_GROUP *rrddim_metrics_group_get(STORAGE_INSTANCE *db_instance __maybe_unused, uuid_t *uuid __maybe_unused) {
+ return NULL;
+}
+
+void rrddim_metrics_group_release(STORAGE_INSTANCE *db_instance __maybe_unused, STORAGE_METRICS_GROUP *smg __maybe_unused) {
+ // if(!smg) return; // smg may be NULL
+ ;
+}
+
+// ----------------------------------------------------------------------------
+// RRDDIM legacy data collection functions
+
+STORAGE_METRIC_HANDLE *
+rrddim_metric_get_or_create(RRDDIM *rd, STORAGE_INSTANCE *db_instance __maybe_unused) {
+ STORAGE_METRIC_HANDLE *t = rrddim_metric_get(db_instance, &rd->metric_uuid);
+ if(!t) {
+ netdata_rwlock_wrlock(&rrddim_JudyHS_rwlock);
+ Pvoid_t *PValue = JudyHSIns(&rrddim_JudyHS_array, &rd->metric_uuid, sizeof(uuid_t), PJE0);
+ fatal_assert(NULL == *PValue);
+ *PValue = rd;
+ t = (STORAGE_METRIC_HANDLE *)rd;
+ netdata_rwlock_unlock(&rrddim_JudyHS_rwlock);
+ }
+
+ if((RRDDIM *)t != rd)
+ fatal("RRDDIM_MEM: incorrect pointer returned from index.");
+
+ return (STORAGE_METRIC_HANDLE *)rd;
+}
+
+STORAGE_METRIC_HANDLE *
+rrddim_metric_get(STORAGE_INSTANCE *db_instance __maybe_unused, uuid_t *uuid) {
+ RRDDIM *rd = NULL;
+ netdata_rwlock_rdlock(&rrddim_JudyHS_rwlock);
+ Pvoid_t *PValue = JudyHSGet(rrddim_JudyHS_array, uuid, sizeof(uuid_t));
+ if (likely(NULL != PValue))
+ rd = *PValue;
+ netdata_rwlock_unlock(&rrddim_JudyHS_rwlock);
+
+ return (STORAGE_METRIC_HANDLE *)rd;
+}
+
+STORAGE_METRIC_HANDLE *rrddim_metric_dup(STORAGE_METRIC_HANDLE *db_metric_handle) {
+ return db_metric_handle;
+}
+
+void rrddim_metric_release(STORAGE_METRIC_HANDLE *db_metric_handle __maybe_unused) {
+ RRDDIM *rd = (RRDDIM *)db_metric_handle;
+
+ netdata_rwlock_wrlock(&rrddim_JudyHS_rwlock);
+ JudyHSDel(&rrddim_JudyHS_array, &rd->metric_uuid, sizeof(uuid_t), PJE0);
+ netdata_rwlock_unlock(&rrddim_JudyHS_rwlock);
+}
+
+void rrddim_store_metric_change_collection_frequency(STORAGE_COLLECT_HANDLE *collection_handle, int update_every __maybe_unused) {
+ rrddim_store_metric_flush(collection_handle);
+}
+
+STORAGE_COLLECT_HANDLE *rrddim_collect_init(STORAGE_METRIC_HANDLE *db_metric_handle, uint32_t update_every __maybe_unused, STORAGE_METRICS_GROUP *smg __maybe_unused) {
+ RRDDIM *rd = (RRDDIM *)db_metric_handle;
+ rd->db[rd->rrdset->current_entry] = pack_storage_number(NAN, SN_FLAG_NONE);
+ struct mem_collect_handle *ch = callocz(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;
+ for(int i = 0; i < rd->rrdset->entries ;i++)
+ rd->db[i] = SN_EMPTY_SLOT;
+
+}
+
+int rrddim_collect_finalize(STORAGE_COLLECT_HANDLE *collection_handle) {
+ freez(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", rrddim_name(rd));
+ 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", rrddim_name(rd));
+ ret = first_entry_t;
+ }
+
+ if(unlikely(ret > last_entry_t)) {
+ error("INTERNAL ERROR: rrddim_slot2time() on %s returns time into the future", rrddim_name(rd));
+ ret = last_entry_t;
+ }
+
+ return ret;
+}
+
+// ----------------------------------------------------------------------------
+// RRDDIM legacy database query functions
+
+void rrddim_query_init(STORAGE_METRIC_HANDLE *db_metric_handle, struct storage_engine_query_handle *handle, time_t start_time, time_t end_time) {
+ RRDDIM *rd = (RRDDIM *)db_metric_handle;
+
+ handle->rd = rd;
+ handle->start_time_s = start_time;
+ handle->end_time_s = end_time;
+ struct mem_query_handle* h = mallocz(sizeof(struct mem_query_handle));
+ 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;
+}
+
+// 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 storage_engine_query_handle *handle) {
+ RRDDIM *rd = handle->rd;
+ struct mem_query_handle* h = (struct mem_query_handle*)handle->handle;
+ 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;
+
+ // 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 sp;
+}
+
+int rrddim_query_is_finished(struct storage_engine_query_handle *handle) {
+ struct mem_query_handle* h = (struct mem_query_handle*)handle->handle;
+ return (h->next_timestamp > handle->end_time_s);
+}
+
+void rrddim_query_finalize(struct storage_engine_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", rrdset_id(handle->rd->rrdset), rrddim_name(handle->rd));
+#endif
+ freez(handle->handle);
+}
+
+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(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
new file mode 100644
index 0000000..79c59f1
--- /dev/null
+++ b/database/ram/rrddim_mem.h
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_RRDDIMMEM_H
+#define NETDATA_RRDDIMMEM_H
+
+#include "database/rrd.h"
+
+struct mem_collect_handle {
+ RRDDIM *rd;
+ long slot;
+ long entries;
+};
+
+struct mem_query_handle {
+ time_t dt;
+ time_t next_timestamp;
+ time_t last_timestamp;
+ time_t slot_timestamp;
+ size_t slot;
+ size_t last_slot;
+};
+
+STORAGE_METRIC_HANDLE *rrddim_metric_get_or_create(RRDDIM *rd, STORAGE_INSTANCE *db_instance);
+STORAGE_METRIC_HANDLE *rrddim_metric_get(STORAGE_INSTANCE *db_instance, uuid_t *uuid);
+STORAGE_METRIC_HANDLE *rrddim_metric_dup(STORAGE_METRIC_HANDLE *db_metric_handle);
+void rrddim_metric_release(STORAGE_METRIC_HANDLE *db_metric_handle);
+
+STORAGE_METRICS_GROUP *rrddim_metrics_group_get(STORAGE_INSTANCE *db_instance, uuid_t *uuid);
+void rrddim_metrics_group_release(STORAGE_INSTANCE *db_instance, STORAGE_METRICS_GROUP *smg);
+
+STORAGE_COLLECT_HANDLE *rrddim_collect_init(STORAGE_METRIC_HANDLE *db_metric_handle, uint32_t update_every, STORAGE_METRICS_GROUP *smg);
+void rrddim_store_metric_change_collection_frequency(STORAGE_COLLECT_HANDLE *collection_handle, int update_every);
+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);
+void rrddim_store_metric_flush(STORAGE_COLLECT_HANDLE *collection_handle);
+int rrddim_collect_finalize(STORAGE_COLLECT_HANDLE *collection_handle);
+
+void rrddim_query_init(STORAGE_METRIC_HANDLE *db_metric_handle, struct storage_engine_query_handle *handle, time_t start_time, time_t end_time);
+STORAGE_POINT rrddim_query_next_metric(struct storage_engine_query_handle *handle);
+int rrddim_query_is_finished(struct storage_engine_query_handle *handle);
+void rrddim_query_finalize(struct storage_engine_query_handle *handle);
+time_t rrddim_query_latest_time(STORAGE_METRIC_HANDLE *db_metric_handle);
+time_t rrddim_query_oldest_time(STORAGE_METRIC_HANDLE *db_metric_handle);
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 16:49:36 +0000