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-rw-r--r--database/contexts/internal.h380
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diff --git a/database/contexts/internal.h b/database/contexts/internal.h
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+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_RRDCONTEXT_INTERNAL_H
+#define NETDATA_RRDCONTEXT_INTERNAL_H 1
+
+#include "rrdcontext.h"
+#include "../sqlite/sqlite_context.h"
+#include "../../aclk/schema-wrappers/context.h"
+#include "../../aclk/aclk_contexts_api.h"
+#include "../../aclk/aclk.h"
+#include "../storage_engine.h"
+
+#define MESSAGES_PER_BUNDLE_TO_SEND_TO_HUB_PER_HOST 5000
+#define FULL_RETENTION_SCAN_DELAY_AFTER_DB_ROTATION_SECS 120
+#define RRDCONTEXT_WORKER_THREAD_HEARTBEAT_USEC (1000 * USEC_PER_MS)
+#define RRDCONTEXT_MINIMUM_ALLOWED_PRIORITY 10
+
+#define LOG_TRANSITIONS false
+
+#define WORKER_JOB_HOSTS 1
+#define WORKER_JOB_CHECK 2
+#define WORKER_JOB_SEND 3
+#define WORKER_JOB_DEQUEUE 4
+#define WORKER_JOB_RETENTION 5
+#define WORKER_JOB_QUEUED 6
+#define WORKER_JOB_CLEANUP 7
+#define WORKER_JOB_CLEANUP_DELETE 8
+#define WORKER_JOB_PP_METRIC 9 // post-processing metrics
+#define WORKER_JOB_PP_INSTANCE 10 // post-processing instances
+#define WORKER_JOB_PP_CONTEXT 11 // post-processing contexts
+#define WORKER_JOB_HUB_QUEUE_SIZE 12
+#define WORKER_JOB_PP_QUEUE_SIZE 13
+
+
+typedef enum __attribute__ ((__packed__)) {
+ RRD_FLAG_NONE = 0,
+ RRD_FLAG_DELETED = (1 << 0), // this is a deleted object (metrics, instances, contexts)
+ RRD_FLAG_COLLECTED = (1 << 1), // this object is currently being collected
+ RRD_FLAG_UPDATED = (1 << 2), // this object has updates to propagate
+ RRD_FLAG_ARCHIVED = (1 << 3), // this object is not currently being collected
+ RRD_FLAG_OWN_LABELS = (1 << 4), // this instance has its own labels - not linked to an RRDSET
+ RRD_FLAG_LIVE_RETENTION = (1 << 5), // we have got live retention from the database
+ RRD_FLAG_QUEUED_FOR_HUB = (1 << 6), // this context is currently queued to be dispatched to hub
+ RRD_FLAG_QUEUED_FOR_PP = (1 << 7), // this context is currently queued to be post-processed
+ RRD_FLAG_HIDDEN = (1 << 8), // don't expose this to the hub or the API
+
+ RRD_FLAG_UPDATE_REASON_TRIGGERED = (1 << 9), // the update was triggered by the child object
+ RRD_FLAG_UPDATE_REASON_LOAD_SQL = (1 << 10), // this object has just been loaded from SQL
+ RRD_FLAG_UPDATE_REASON_NEW_OBJECT = (1 << 11), // this object has just been created
+ RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT = (1 << 12), // we received an update on this object
+ RRD_FLAG_UPDATE_REASON_CHANGED_LINKING = (1 << 13), // an instance or a metric switched RRDSET or RRDDIM
+ RRD_FLAG_UPDATE_REASON_CHANGED_METADATA = (1 << 14), // this context or instance changed uuid, name, units, title, family, chart type, priority, update every, rrd changed flags
+ RRD_FLAG_UPDATE_REASON_ZERO_RETENTION = (1 << 15), // this object has no retention
+ RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T = (1 << 16), // this object changed its oldest time in the db
+ RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T = (1 << 17), // this object change its latest time in the db
+ RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED = (1 << 18), // this object has stopped being collected
+ RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED = (1 << 19), // this object has started being collected
+ RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD = (1 << 20), // this context belongs to a host that just disconnected
+ RRD_FLAG_UPDATE_REASON_UNUSED = (1 << 21), // this context is not used anymore
+ RRD_FLAG_UPDATE_REASON_DB_ROTATION = (1 << 22), // this context changed because of a db rotation
+
+ // action to perform on an object
+ RRD_FLAG_UPDATE_REASON_UPDATE_RETENTION = (1 << 30), // this object has to update its retention from the db
+} RRD_FLAGS;
+
+struct rrdcontext_reason {
+ RRD_FLAGS flag;
+ const char *name;
+ usec_t delay_ut;
+};
+
+extern struct rrdcontext_reason rrdcontext_reasons[];
+
+#define RRD_FLAG_ALL_UPDATE_REASONS ( \
+ RRD_FLAG_UPDATE_REASON_TRIGGERED \
+ |RRD_FLAG_UPDATE_REASON_LOAD_SQL \
+ |RRD_FLAG_UPDATE_REASON_NEW_OBJECT \
+ |RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT \
+ |RRD_FLAG_UPDATE_REASON_CHANGED_LINKING \
+ |RRD_FLAG_UPDATE_REASON_CHANGED_METADATA \
+ |RRD_FLAG_UPDATE_REASON_ZERO_RETENTION \
+ |RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T \
+ |RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T \
+ |RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED \
+ |RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED \
+ |RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD \
+ |RRD_FLAG_UPDATE_REASON_DB_ROTATION \
+ |RRD_FLAG_UPDATE_REASON_UNUSED \
+ )
+
+#define RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS ( \
+ RRD_FLAG_ARCHIVED \
+ |RRD_FLAG_HIDDEN \
+ |RRD_FLAG_ALL_UPDATE_REASONS \
+ )
+
+#define RRD_FLAGS_REQUIRED_FOR_DELETIONS ( \
+ RRD_FLAG_DELETED \
+ |RRD_FLAG_LIVE_RETENTION \
+)
+
+#define RRD_FLAGS_PREVENTING_DELETIONS ( \
+ RRD_FLAG_QUEUED_FOR_HUB \
+ |RRD_FLAG_COLLECTED \
+ |RRD_FLAG_QUEUED_FOR_PP \
+)
+
+// get all the flags of an object
+#define rrd_flags_get(obj) __atomic_load_n(&((obj)->flags), __ATOMIC_SEQ_CST)
+
+// check if ANY of the given flags (bits) is set
+#define rrd_flag_check(obj, flag) (rrd_flags_get(obj) & (flag))
+
+// check if ALL the given flags (bits) are set
+#define rrd_flag_check_all(obj, flag) (rrd_flag_check(obj, flag) == (flag))
+
+// set one or more flags (bits)
+#define rrd_flag_set(obj, flag) __atomic_or_fetch(&((obj)->flags), flag, __ATOMIC_SEQ_CST)
+
+// clear one or more flags (bits)
+#define rrd_flag_clear(obj, flag) __atomic_and_fetch(&((obj)->flags), ~(flag), __ATOMIC_SEQ_CST)
+
+// replace the flags of an object, with the supplied ones
+#define rrd_flags_replace(obj, all_flags) __atomic_store_n(&((obj)->flags), all_flags, __ATOMIC_SEQ_CST)
+
+static inline void
+rrd_flag_add_remove_atomic(RRD_FLAGS *flags, RRD_FLAGS check, RRD_FLAGS conditionally_add, RRD_FLAGS always_remove) {
+ RRD_FLAGS expected, desired;
+
+ do {
+ expected = *flags;
+
+ desired = expected;
+ desired &= ~(always_remove);
+
+ if(!(expected & check))
+ desired |= (check | conditionally_add);
+
+ } while(!__atomic_compare_exchange_n(flags, &expected, desired, false, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST));
+}
+
+#define rrd_flag_set_collected(obj) \
+ rrd_flag_add_remove_atomic(&((obj)->flags) \
+ /* check this flag */ \
+ , RRD_FLAG_COLLECTED \
+ \
+ /* add these flags together with the above, if the above is not already set */ \
+ , RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED | RRD_FLAG_UPDATED \
+ \
+ /* always remove these flags */ \
+ , RRD_FLAG_ARCHIVED \
+ | RRD_FLAG_DELETED \
+ | RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED \
+ | RRD_FLAG_UPDATE_REASON_ZERO_RETENTION \
+ | RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD \
+ )
+
+#define rrd_flag_set_archived(obj) \
+ rrd_flag_add_remove_atomic(&((obj)->flags) \
+ /* check this flag */ \
+ , RRD_FLAG_ARCHIVED \
+ \
+ /* add these flags together with the above, if the above is not already set */ \
+ , RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED | RRD_FLAG_UPDATED \
+ \
+ /* always remove these flags */ \
+ , RRD_FLAG_COLLECTED \
+ | RRD_FLAG_DELETED \
+ | RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED \
+ | RRD_FLAG_UPDATE_REASON_ZERO_RETENTION \
+ )
+
+#define rrd_flag_set_deleted(obj, reason) \
+ rrd_flag_add_remove_atomic(&((obj)->flags) \
+ /* check this flag */ \
+ , RRD_FLAG_DELETED \
+ \
+ /* add these flags together with the above, if the above is not already set */ \
+ , RRD_FLAG_UPDATE_REASON_ZERO_RETENTION | RRD_FLAG_UPDATED | (reason) \
+ \
+ /* always remove these flags */ \
+ , RRD_FLAG_ARCHIVED \
+ | RRD_FLAG_COLLECTED \
+ )
+
+#define rrd_flag_is_collected(obj) rrd_flag_check(obj, RRD_FLAG_COLLECTED)
+#define rrd_flag_is_archived(obj) rrd_flag_check(obj, RRD_FLAG_ARCHIVED)
+#define rrd_flag_is_deleted(obj) rrd_flag_check(obj, RRD_FLAG_DELETED)
+#define rrd_flag_is_updated(obj) rrd_flag_check(obj, RRD_FLAG_UPDATED)
+
+// mark an object as updated, providing reasons (additional bits)
+#define rrd_flag_set_updated(obj, reason) rrd_flag_set(obj, RRD_FLAG_UPDATED | (reason))
+
+// clear an object as being updated, clearing also all the reasons
+#define rrd_flag_unset_updated(obj) rrd_flag_clear(obj, RRD_FLAG_UPDATED | RRD_FLAG_ALL_UPDATE_REASONS)
+
+
+typedef struct rrdmetric {
+ uuid_t uuid;
+
+ STRING *id;
+ STRING *name;
+
+ RRDDIM *rrddim;
+
+ time_t first_time_s;
+ time_t last_time_s;
+ RRD_FLAGS flags;
+
+ struct rrdinstance *ri;
+} RRDMETRIC;
+
+typedef struct rrdinstance {
+ uuid_t uuid;
+
+ STRING *id;
+ STRING *name;
+ STRING *title;
+ STRING *units;
+ STRING *family;
+ uint32_t priority:24;
+ RRDSET_TYPE chart_type;
+
+ RRD_FLAGS flags; // flags related to this instance
+ time_t first_time_s;
+ time_t last_time_s;
+
+ time_t update_every_s; // data collection frequency
+ RRDSET *rrdset; // pointer to RRDSET when collected, or NULL
+
+ DICTIONARY *rrdlabels; // linked to RRDSET->chart_labels or own version
+
+ struct rrdcontext *rc;
+ DICTIONARY *rrdmetrics;
+
+ struct {
+ uint32_t collected_metrics_count; // a temporary variable to detect BEGIN/END without SET
+ // don't use it for other purposes
+ // it goes up and then resets to zero, on every iteration
+ } internal;
+} RRDINSTANCE;
+
+typedef struct rrdcontext {
+ uint64_t version;
+
+ STRING *id;
+ STRING *title;
+ STRING *units;
+ STRING *family;
+ uint32_t priority;
+ RRDSET_TYPE chart_type;
+
+ RRD_FLAGS flags;
+ time_t first_time_s;
+ time_t last_time_s;
+
+ VERSIONED_CONTEXT_DATA hub;
+
+ DICTIONARY *rrdinstances;
+ RRDHOST *rrdhost;
+
+ struct {
+ RRD_FLAGS queued_flags; // the last flags that triggered the post-processing
+ usec_t queued_ut; // the last time this was queued
+ usec_t dequeued_ut; // the last time we sent (or deduplicated) this context
+ size_t executions; // how many times this context has been processed
+ } pp;
+
+ struct {
+ RRD_FLAGS queued_flags; // the last flags that triggered the queueing
+ usec_t queued_ut; // the last time this was queued
+ usec_t delay_calc_ut; // the last time we calculated the scheduled_dispatched_ut
+ usec_t scheduled_dispatch_ut; // the time it was/is scheduled to be sent
+ usec_t dequeued_ut; // the last time we sent (or deduplicated) this context
+ size_t dispatches; // the number of times this has been dispatched to hub
+ } queue;
+
+ netdata_mutex_t mutex;
+} RRDCONTEXT;
+
+
+// ----------------------------------------------------------------------------
+// helper one-liners for RRDMETRIC
+
+bool rrdmetric_update_retention(RRDMETRIC *rm);
+
+static inline RRDMETRIC *rrdmetric_acquired_value(RRDMETRIC_ACQUIRED *rma) {
+ return dictionary_acquired_item_value((DICTIONARY_ITEM *)rma);
+}
+
+static inline RRDMETRIC_ACQUIRED *rrdmetric_acquired_dup(RRDMETRIC_ACQUIRED *rma) {
+ RRDMETRIC *rm = rrdmetric_acquired_value(rma);
+ return (RRDMETRIC_ACQUIRED *)dictionary_acquired_item_dup(rm->ri->rrdmetrics, (DICTIONARY_ITEM *)rma);
+}
+
+static inline void rrdmetric_release(RRDMETRIC_ACQUIRED *rma) {
+ RRDMETRIC *rm = rrdmetric_acquired_value(rma);
+ dictionary_acquired_item_release(rm->ri->rrdmetrics, (DICTIONARY_ITEM *)rma);
+}
+
+void rrdmetric_rrddim_is_freed(RRDDIM *rd);
+void rrdmetric_updated_rrddim_flags(RRDDIM *rd);
+void rrdmetric_collected_rrddim(RRDDIM *rd);
+
+// ----------------------------------------------------------------------------
+// helper one-liners for RRDINSTANCE
+
+static inline RRDINSTANCE *rrdinstance_acquired_value(RRDINSTANCE_ACQUIRED *ria) {
+ return dictionary_acquired_item_value((DICTIONARY_ITEM *)ria);
+}
+
+static inline RRDINSTANCE_ACQUIRED *rrdinstance_acquired_dup(RRDINSTANCE_ACQUIRED *ria) {
+ RRDINSTANCE *ri = rrdinstance_acquired_value(ria);
+ return (RRDINSTANCE_ACQUIRED *)dictionary_acquired_item_dup(ri->rc->rrdinstances, (DICTIONARY_ITEM *)ria);
+}
+
+static inline void rrdinstance_release(RRDINSTANCE_ACQUIRED *ria) {
+ RRDINSTANCE *ri = rrdinstance_acquired_value(ria);
+ dictionary_acquired_item_release(ri->rc->rrdinstances, (DICTIONARY_ITEM *)ria);
+}
+
+void rrdinstance_from_rrdset(RRDSET *st);
+void rrdinstance_rrdset_is_freed(RRDSET *st);
+void rrdinstance_rrdset_has_updated_retention(RRDSET *st);
+void rrdinstance_updated_rrdset_name(RRDSET *st);
+void rrdinstance_updated_rrdset_flags_no_action(RRDINSTANCE *ri, RRDSET *st);
+void rrdinstance_updated_rrdset_flags(RRDSET *st);
+void rrdinstance_collected_rrdset(RRDSET *st);
+
+void rrdcontext_queue_for_post_processing(RRDCONTEXT *rc, const char *function, RRD_FLAGS flags);
+
+// ----------------------------------------------------------------------------
+// helper one-liners for RRDCONTEXT
+
+static inline RRDCONTEXT *rrdcontext_acquired_value(RRDCONTEXT_ACQUIRED *rca) {
+ return dictionary_acquired_item_value((DICTIONARY_ITEM *)rca);
+}
+
+static inline RRDCONTEXT_ACQUIRED *rrdcontext_acquired_dup(RRDCONTEXT_ACQUIRED *rca) {
+ RRDCONTEXT *rc = rrdcontext_acquired_value(rca);
+ return (RRDCONTEXT_ACQUIRED *)dictionary_acquired_item_dup(rc->rrdhost->rrdctx.contexts, (DICTIONARY_ITEM *)rca);
+}
+
+static inline void rrdcontext_release(RRDCONTEXT_ACQUIRED *rca) {
+ RRDCONTEXT *rc = rrdcontext_acquired_value(rca);
+ dictionary_acquired_item_release(rc->rrdhost->rrdctx.contexts, (DICTIONARY_ITEM *)rca);
+}
+
+// ----------------------------------------------------------------------------
+// Forward definitions
+
+void rrdcontext_recalculate_context_retention(RRDCONTEXT *rc, RRD_FLAGS reason, bool worker_jobs);
+void rrdcontext_recalculate_host_retention(RRDHOST *host, RRD_FLAGS reason, bool worker_jobs);
+
+#define rrdcontext_lock(rc) netdata_mutex_lock(&((rc)->mutex))
+#define rrdcontext_unlock(rc) netdata_mutex_unlock(&((rc)->mutex))
+
+void rrdinstance_trigger_updates(RRDINSTANCE *ri, const char *function);
+void rrdcontext_trigger_updates(RRDCONTEXT *rc, const char *function);
+
+void rrdinstances_create_in_rrdcontext(RRDCONTEXT *rc);
+void rrdinstances_destroy_from_rrdcontext(RRDCONTEXT *rc);
+
+void rrdmetrics_destroy_from_rrdinstance(RRDINSTANCE *ri);
+void rrdmetrics_create_in_rrdinstance(RRDINSTANCE *ri);
+
+void rrdmetric_from_rrddim(RRDDIM *rd);
+
+void rrd_reasons_to_buffer_json_array_items(RRD_FLAGS flags, BUFFER *wb);
+
+#define rrdcontext_version_hash(host) rrdcontext_version_hash_with_callback(host, NULL, false, NULL)
+uint64_t rrdcontext_version_hash_with_callback(
+ RRDHOST *host,
+ void (*callback)(RRDCONTEXT *, bool, void *),
+ bool snapshot,
+ void *bundle);
+
+void rrdcontext_message_send_unsafe(RRDCONTEXT *rc, bool snapshot __maybe_unused, void *bundle __maybe_unused);
+
+#endif //NETDATA_RRDCONTEXT_INTERNAL_H