diff options
Diffstat (limited to 'database/contexts/instance.c')
| -rw-r--r-- | database/contexts/instance.c | 524 |
1 files changed, 524 insertions, 0 deletions
diff --git a/database/contexts/instance.c b/database/contexts/instance.c new file mode 100644 index 00000000..665022af --- /dev/null +++ b/database/contexts/instance.c @@ -0,0 +1,524 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "internal.h" + +// ---------------------------------------------------------------------------- +// helper one-liners for RRDINSTANCE + +bool rrdinstance_acquired_id_and_name_are_same(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return ri->id == ri->name; +} + +inline const char *rrdinstance_acquired_id(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return string2str(ri->id); +} + +inline const char *rrdinstance_acquired_name(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return string2str(ri->name); +} + +inline bool rrdinstance_acquired_has_name(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return (ri->name && ri->name != ri->id); +} + +inline const char *rrdinstance_acquired_units(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return string2str(ri->units); +} + +inline STRING *rrdinstance_acquired_units_dup(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return string_dup(ri->units); +} + +inline DICTIONARY *rrdinstance_acquired_labels(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return ri->rrdlabels; +} + +inline DICTIONARY *rrdinstance_acquired_functions(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + if(!ri->rrdset) return NULL; + return ri->rrdset->functions_view; +} + +inline RRDHOST *rrdinstance_acquired_rrdhost(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return ri->rc->rrdhost; +} + +inline bool rrdinstance_acquired_belongs_to_context(RRDINSTANCE_ACQUIRED *ria, RRDCONTEXT_ACQUIRED *rca) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + return ri->rc == rc; +} + +inline time_t rrdinstance_acquired_update_every(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return ri->update_every_s; +} + +// ---------------------------------------------------------------------------- +// RRDINSTANCE + +static void rrdinstance_free(RRDINSTANCE *ri) { + + if(rrd_flag_check(ri, RRD_FLAG_OWN_LABELS)) + dictionary_destroy(ri->rrdlabels); + + rrdmetrics_destroy_from_rrdinstance(ri); + string_freez(ri->id); + string_freez(ri->name); + string_freez(ri->title); + string_freez(ri->units); + string_freez(ri->family); + + ri->id = NULL; + ri->name = NULL; + ri->title = NULL; + ri->units = NULL; + ri->family = NULL; + ri->rc = NULL; + ri->rrdlabels = NULL; + ri->rrdmetrics = NULL; + ri->rrdset = NULL; +} + +static void rrdinstance_insert_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *rrdcontext) { + RRDINSTANCE *ri = value; + + // link it to its parent + ri->rc = rrdcontext; + + ri->flags = ri->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS; // no need for atomics + + if(!ri->name) + ri->name = string_dup(ri->id); + + if(ri->rrdset) { + ri->rrdlabels = ri->rrdset->rrdlabels; + ri->flags &= ~RRD_FLAG_OWN_LABELS; // no need of atomics at the constructor + } + else { + ri->rrdlabels = rrdlabels_create(); + ri->flags |= RRD_FLAG_OWN_LABELS; // no need of atomics at the constructor + } + + if(ri->rrdset) { + if(unlikely(rrdset_flag_check(ri->rrdset, RRDSET_FLAG_HIDDEN))) + ri->flags |= RRD_FLAG_HIDDEN; // no need of atomics at the constructor + else + ri->flags &= ~RRD_FLAG_HIDDEN; // no need of atomics at the constructor + } + + rrdmetrics_create_in_rrdinstance(ri); + + // signal the react callback to do the job + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_NEW_OBJECT); +} + +static void rrdinstance_delete_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *rrdcontext __maybe_unused) { + RRDINSTANCE *ri = (RRDINSTANCE *)value; + + internal_error(ri->rrdset, "RRDINSTANCE: '%s' is freed but there is a RRDSET linked to it.", string2str(ri->id)); + + rrdinstance_free(ri); +} + +static bool rrdinstance_conflict_callback(const DICTIONARY_ITEM *item __maybe_unused, void *old_value, void *new_value, void *rrdcontext __maybe_unused) { + RRDINSTANCE *ri = (RRDINSTANCE *)old_value; + RRDINSTANCE *ri_new = (RRDINSTANCE *)new_value; + + internal_error(ri->id != ri_new->id, + "RRDINSTANCE: '%s' cannot change id to '%s'", + string2str(ri->id), string2str(ri_new->id)); + + if(uuid_memcmp(&ri->uuid, &ri_new->uuid) != 0) { +#ifdef NETDATA_INTERNAL_CHECKS + char uuid1[UUID_STR_LEN], uuid2[UUID_STR_LEN]; + uuid_unparse(ri->uuid, uuid1); + uuid_unparse(ri_new->uuid, uuid2); + internal_error(true, "RRDINSTANCE: '%s' of host '%s' changed UUID from '%s' to '%s'", + string2str(ri->id), rrdhost_hostname(ri->rc->rrdhost), uuid1, uuid2); +#endif + + uuid_copy(ri->uuid, ri_new->uuid); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->rrdset && ri_new->rrdset && ri->rrdset != ri_new->rrdset) { + ri->rrdset = ri_new->rrdset; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_LINKING); + } + +#ifdef NETDATA_INTERNAL_CHECKS + if(ri->rrdset && uuid_memcmp(&ri->uuid, &ri->rrdset->chart_uuid) != 0) { + char uuid1[UUID_STR_LEN], uuid2[UUID_STR_LEN]; + uuid_unparse(ri->uuid, uuid1); + uuid_unparse(ri->rrdset->chart_uuid, uuid2); + internal_error(true, "RRDINSTANCE: '%s' is linked to RRDSET '%s' but they have different UUIDs. RRDINSTANCE has '%s', RRDSET has '%s'", string2str(ri->id), rrdset_id(ri->rrdset), uuid1, uuid2); + } +#endif + + if(ri->name != ri_new->name) { + STRING *old = ri->name; + ri->name = string_dup(ri_new->name); + string_freez(old); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->title != ri_new->title) { + STRING *old = ri->title; + ri->title = string_dup(ri_new->title); + string_freez(old); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->units != ri_new->units) { + STRING *old = ri->units; + ri->units = string_dup(ri_new->units); + string_freez(old); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->family != ri_new->family) { + STRING *old = ri->family; + ri->family = string_dup(ri_new->family); + string_freez(old); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->chart_type != ri_new->chart_type) { + ri->chart_type = ri_new->chart_type; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->priority != ri_new->priority) { + ri->priority = ri_new->priority; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->update_every_s != ri_new->update_every_s) { + ri->update_every_s = ri_new->update_every_s; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->rrdset != ri_new->rrdset) { + ri->rrdset = ri_new->rrdset; + + if(ri->rrdset && rrd_flag_check(ri, RRD_FLAG_OWN_LABELS)) { + DICTIONARY *old = ri->rrdlabels; + ri->rrdlabels = ri->rrdset->rrdlabels; + rrd_flag_clear(ri, RRD_FLAG_OWN_LABELS); + rrdlabels_destroy(old); + } + else if(!ri->rrdset && !rrd_flag_check(ri, RRD_FLAG_OWN_LABELS)) { + ri->rrdlabels = rrdlabels_create(); + rrd_flag_set(ri, RRD_FLAG_OWN_LABELS); + } + } + + if(ri->rrdset) { + if(unlikely(rrdset_flag_check(ri->rrdset, RRDSET_FLAG_HIDDEN))) + rrd_flag_set(ri, RRD_FLAG_HIDDEN); + else + rrd_flag_clear(ri, RRD_FLAG_HIDDEN); + } + + rrd_flag_set(ri, ri_new->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS); // no need for atomics on ri_new + + if(rrd_flag_is_collected(ri) && rrd_flag_is_archived(ri)) + rrd_flag_set_collected(ri); + + if(rrd_flag_is_updated(ri)) + rrd_flag_set(ri, RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT); + + // free the new one + rrdinstance_free(ri_new); + + // the react callback will continue from here + return rrd_flag_is_updated(ri); +} + +static void rrdinstance_react_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *rrdcontext __maybe_unused) { + RRDINSTANCE *ri = value; + + rrdinstance_trigger_updates(ri, __FUNCTION__ ); +} + +void rrdinstances_create_in_rrdcontext(RRDCONTEXT *rc) { + if(unlikely(!rc || rc->rrdinstances)) return; + + rc->rrdinstances = dictionary_create_advanced(DICT_OPTION_DONT_OVERWRITE_VALUE | DICT_OPTION_FIXED_SIZE, + &dictionary_stats_category_rrdcontext, sizeof(RRDINSTANCE)); + + dictionary_register_insert_callback(rc->rrdinstances, rrdinstance_insert_callback, rc); + dictionary_register_delete_callback(rc->rrdinstances, rrdinstance_delete_callback, rc); + dictionary_register_conflict_callback(rc->rrdinstances, rrdinstance_conflict_callback, rc); + dictionary_register_react_callback(rc->rrdinstances, rrdinstance_react_callback, rc); +} + +void rrdinstances_destroy_from_rrdcontext(RRDCONTEXT *rc) { + if(unlikely(!rc || !rc->rrdinstances)) return; + + dictionary_destroy(rc->rrdinstances); + rc->rrdinstances = NULL; +} + +void rrdinstance_trigger_updates(RRDINSTANCE *ri, const char *function) { + RRDSET *st = ri->rrdset; + + if(likely(st)) { + if(unlikely((unsigned int) st->priority != ri->priority)) { + ri->priority = st->priority; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + if(unlikely(st->update_every != ri->update_every_s)) { + ri->update_every_s = st->update_every; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + } + else if(unlikely(rrd_flag_is_collected(ri))) { + // there is no rrdset, but we have it as collected! + + rrd_flag_set_archived(ri); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_LINKING); + } + + if(rrd_flag_is_updated(ri) || !rrd_flag_check(ri, RRD_FLAG_LIVE_RETENTION)) { + rrd_flag_set_updated(ri->rc, RRD_FLAG_UPDATE_REASON_TRIGGERED); + rrdcontext_queue_for_post_processing(ri->rc, function, ri->flags); + } +} + +// ---------------------------------------------------------------------------- +// RRDINSTANCE HOOKS ON RRDSET + +inline void rrdinstance_from_rrdset(RRDSET *st) { + RRDCONTEXT trc = { + .id = string_dup(st->context), + .title = string_dup(st->title), + .units = string_dup(st->units), + .family = string_dup(st->family), + .priority = st->priority, + .chart_type = st->chart_type, + .flags = RRD_FLAG_NONE, // no need for atomics + .rrdhost = st->rrdhost, + }; + + RRDCONTEXT_ACQUIRED *rca = (RRDCONTEXT_ACQUIRED *)dictionary_set_and_acquire_item(st->rrdhost->rrdctx.contexts, string2str(trc.id), &trc, sizeof(trc)); + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + + RRDINSTANCE tri = { + .id = string_dup(st->id), + .name = string_dup(st->name), + .units = string_dup(st->units), + .family = string_dup(st->family), + .title = string_dup(st->title), + .chart_type = st->chart_type, + .priority = st->priority, + .update_every_s = st->update_every, + .flags = RRD_FLAG_NONE, // no need for atomics + .rrdset = st, + }; + uuid_copy(tri.uuid, st->chart_uuid); + + RRDINSTANCE_ACQUIRED *ria = (RRDINSTANCE_ACQUIRED *)dictionary_set_and_acquire_item(rc->rrdinstances, string2str(tri.id), &tri, sizeof(tri)); + + RRDCONTEXT_ACQUIRED *rca_old = st->rrdcontext; + RRDINSTANCE_ACQUIRED *ria_old = st->rrdinstance; + + st->rrdcontext = rca; + st->rrdinstance = ria; + + if(rca == rca_old) { + rrdcontext_release(rca_old); + rca_old = NULL; + } + + if(ria == ria_old) { + rrdinstance_release(ria_old); + ria_old = NULL; + } + + if(rca_old && ria_old) { + // Oops! The chart changed context! + + // RRDCONTEXT *rc_old = rrdcontext_acquired_value(rca_old); + RRDINSTANCE *ri_old = rrdinstance_acquired_value(ria_old); + + // migrate all dimensions to the new metrics + RRDDIM *rd; + rrddim_foreach_read(rd, st) { + if (!rd->rrdmetric) continue; + + RRDMETRIC *rm_old = rrdmetric_acquired_value(rd->rrdmetric); + rrd_flags_replace(rm_old, RRD_FLAG_DELETED|RRD_FLAG_UPDATED|RRD_FLAG_LIVE_RETENTION|RRD_FLAG_UPDATE_REASON_UNUSED|RRD_FLAG_UPDATE_REASON_ZERO_RETENTION); + rm_old->rrddim = NULL; + rm_old->first_time_s = 0; + rm_old->last_time_s = 0; + + rrdmetric_release(rd->rrdmetric); + rd->rrdmetric = NULL; + + rrdmetric_from_rrddim(rd); + } + rrddim_foreach_done(rd); + + // mark the old instance, ready to be deleted + if(!rrd_flag_check(ri_old, RRD_FLAG_OWN_LABELS)) + ri_old->rrdlabels = rrdlabels_create(); + + rrd_flags_replace(ri_old, RRD_FLAG_OWN_LABELS|RRD_FLAG_DELETED|RRD_FLAG_UPDATED|RRD_FLAG_LIVE_RETENTION|RRD_FLAG_UPDATE_REASON_UNUSED|RRD_FLAG_UPDATE_REASON_ZERO_RETENTION); + ri_old->rrdset = NULL; + ri_old->first_time_s = 0; + ri_old->last_time_s = 0; + + rrdinstance_trigger_updates(ri_old, __FUNCTION__ ); + rrdinstance_release(ria_old); + + /* + // trigger updates on the old context + if(!dictionary_entries(rc_old->rrdinstances) && !dictionary_stats_referenced_items(rc_old->rrdinstances)) { + rrdcontext_lock(rc_old); + rc_old->flags = ((rc_old->flags & RRD_FLAG_QUEUED)?RRD_FLAG_QUEUED:RRD_FLAG_NONE)|RRD_FLAG_DELETED|RRD_FLAG_UPDATED|RRD_FLAG_LIVE_RETENTION|RRD_FLAG_UPDATE_REASON_UNUSED|RRD_FLAG_UPDATE_REASON_ZERO_RETENTION; + rc_old->first_time_s = 0; + rc_old->last_time_s = 0; + rrdcontext_unlock(rc_old); + rrdcontext_trigger_updates(rc_old, __FUNCTION__ ); + } + else + rrdcontext_trigger_updates(rc_old, __FUNCTION__ ); + */ + + rrdcontext_release(rca_old); + rca_old = NULL; + ria_old = NULL; + } + + if(rca_old || ria_old) + fatal("RRDCONTEXT: cannot switch rrdcontext without switching rrdinstance too"); +} + +#define rrdset_get_rrdinstance(st) rrdset_get_rrdinstance_with_trace(st, __FUNCTION__); +static inline RRDINSTANCE *rrdset_get_rrdinstance_with_trace(RRDSET *st, const char *function) { + if(unlikely(!st->rrdinstance)) { + error("RRDINSTANCE: RRDSET '%s' is not linked to an RRDINSTANCE at %s()", rrdset_id(st), function); + return NULL; + } + + RRDINSTANCE *ri = rrdinstance_acquired_value(st->rrdinstance); + if(unlikely(!ri)) { + error("RRDINSTANCE: RRDSET '%s' lost its link to an RRDINSTANCE at %s()", rrdset_id(st), function); + return NULL; + } + + if(unlikely(ri->rrdset != st)) + fatal("RRDINSTANCE: '%s' is not linked to RRDSET '%s' at %s()", string2str(ri->id), rrdset_id(st), function); + + return ri; +} + +inline void rrdinstance_rrdset_is_freed(RRDSET *st) { + RRDINSTANCE *ri = rrdset_get_rrdinstance(st); + if(unlikely(!ri)) return; + + rrd_flag_set_archived(ri); + + if(!rrd_flag_check(ri, RRD_FLAG_OWN_LABELS)) { + ri->rrdlabels = rrdlabels_create(); + rrdlabels_copy(ri->rrdlabels, st->rrdlabels); + rrd_flag_set(ri, RRD_FLAG_OWN_LABELS); + } + + ri->rrdset = NULL; + + rrdinstance_trigger_updates(ri, __FUNCTION__ ); + + rrdinstance_release(st->rrdinstance); + st->rrdinstance = NULL; + + rrdcontext_release(st->rrdcontext); + st->rrdcontext = NULL; +} + +inline void rrdinstance_rrdset_has_updated_retention(RRDSET *st) { + RRDINSTANCE *ri = rrdset_get_rrdinstance(st); + if(unlikely(!ri)) return; + + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_UPDATE_RETENTION); + rrdinstance_trigger_updates(ri, __FUNCTION__ ); +} + +inline void rrdinstance_updated_rrdset_name(RRDSET *st) { + // the chart may not be initialized when this is called + if(unlikely(!st->rrdinstance)) return; + + RRDINSTANCE *ri = rrdset_get_rrdinstance(st); + if(unlikely(!ri)) return; + + if(st->name != ri->name) { + STRING *old = ri->name; + ri->name = string_dup(st->name); + string_freez(old); + + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + rrdinstance_trigger_updates(ri, __FUNCTION__ ); + } +} + +inline void rrdinstance_updated_rrdset_flags_no_action(RRDINSTANCE *ri, RRDSET *st) { + if(unlikely(ri->rrdset != st)) + fatal("RRDCONTEXT: instance '%s' is not linked to chart '%s' on host '%s'", + string2str(ri->id), rrdset_id(st), rrdhost_hostname(st->rrdhost)); + + bool st_is_hidden = rrdset_flag_check(st, RRDSET_FLAG_HIDDEN); + bool ri_is_hidden = rrd_flag_check(ri, RRD_FLAG_HIDDEN); + + if(unlikely(st_is_hidden != ri_is_hidden)) { + if (unlikely(st_is_hidden && !ri_is_hidden)) + rrd_flag_set_updated(ri, RRD_FLAG_HIDDEN | RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + + else if (unlikely(!st_is_hidden && ri_is_hidden)) { + rrd_flag_clear(ri, RRD_FLAG_HIDDEN); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + } +} + +inline void rrdinstance_updated_rrdset_flags(RRDSET *st) { + RRDINSTANCE *ri = rrdset_get_rrdinstance(st); + if(unlikely(!ri)) return; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_ARCHIVED|RRDSET_FLAG_OBSOLETE))) + rrd_flag_set_archived(ri); + + rrdinstance_updated_rrdset_flags_no_action(ri, st); + + rrdinstance_trigger_updates(ri, __FUNCTION__ ); +} + +inline void rrdinstance_collected_rrdset(RRDSET *st) { + RRDINSTANCE *ri = rrdset_get_rrdinstance(st); + if(unlikely(!ri)) { + rrdcontext_updated_rrdset(st); + ri = rrdset_get_rrdinstance(st); + if(unlikely(!ri)) + return; + } + + rrdinstance_updated_rrdset_flags_no_action(ri, st); + + if(unlikely(ri->internal.collected_metrics_count && !rrd_flag_is_collected(ri))) + rrd_flag_set_collected(ri); + + // we use this variable to detect BEGIN/END without SET + ri->internal.collected_metrics_count = 0; + + rrdinstance_trigger_updates(ri, __FUNCTION__ ); +} + |