diff options
Diffstat (limited to 'database/rrdcontext.c')
| -rw-r--r-- | database/rrdcontext.c | 2908 |
1 files changed, 2908 insertions, 0 deletions
diff --git a/database/rrdcontext.c b/database/rrdcontext.c new file mode 100644 index 000000000..b6b9e945c --- /dev/null +++ b/database/rrdcontext.c @@ -0,0 +1,2908 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "rrdcontext.h" +#include "sqlite/sqlite_context.h" +#include "aclk/schema-wrappers/context.h" +#include "aclk/aclk_contexts_api.h" +#include "aclk/aclk_api.h" + +int rrdcontext_enabled = CONFIG_BOOLEAN_YES; + +#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_SECS 1 +#define RRDCONTEXT_MINIMUM_ALLOWED_PRIORITY 10 + +// #define LOG_TRANSITIONS 1 +// #define LOG_RRDINSTANCES 1 + +typedef enum { + 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 = (1 << 6), // this context is currently queued to be dispatched to hub + RRD_FLAG_DONT_PROCESS = (1 << 7), // don't process updates for this object + RRD_FLAG_HIDDEN = (1 << 8), // don't expose this to the hub or the API + + 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_UUID = (1 << 14), // an instance or a metric changed UUID + RRD_FLAG_UPDATE_REASON_CHANGED_NAME = (1 << 15), // an instance or a metric changed name + RRD_FLAG_UPDATE_REASON_CHANGED_UNITS = (1 << 16), // this context or instance changed units + RRD_FLAG_UPDATE_REASON_CHANGED_TITLE = (1 << 17), // this context or instance changed title + RRD_FLAG_UPDATE_REASON_CHANGED_FAMILY = (1 << 18), // the context or the instance changed family + RRD_FLAG_UPDATE_REASON_CHANGED_CHART_TYPE = (1 << 19), // this context or instance changed chart type + RRD_FLAG_UPDATE_REASON_CHANGED_PRIORITY = (1 << 20), // this context or instance changed its priority + RRD_FLAG_UPDATE_REASON_CHANGED_UPDATE_EVERY = (1 << 21), // the instance or the metric changed update frequency + RRD_FLAG_UPDATE_REASON_ZERO_RETENTION = (1 << 22), // this object has not retention + RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T = (1 << 23), // this object changed its oldest time in the db + RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T = (1 << 24), // this object change its latest time in the db + RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED = (1 << 25), // this object has stopped being collected + RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED = (1 << 26), // this object has started being collected + RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD = (1 << 27), // this context belongs to a host that just disconnected + RRD_FLAG_UPDATE_REASON_DB_ROTATION = (1 << 28), // this context changed because of a db rotation + RRD_FLAG_UPDATE_REASON_UNUSED = (1 << 29), // this context is not used anymore + RRD_FLAG_UPDATE_REASON_CHANGED_FLAGS = (1 << 30), // this context is not used anymore +} RRD_FLAGS; + +#define RRD_FLAG_ALL_UPDATE_REASONS ( \ + 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_UUID \ + |RRD_FLAG_UPDATE_REASON_CHANGED_NAME \ + |RRD_FLAG_UPDATE_REASON_CHANGED_UNITS \ + |RRD_FLAG_UPDATE_REASON_CHANGED_TITLE \ + |RRD_FLAG_UPDATE_REASON_CHANGED_FAMILY \ + |RRD_FLAG_UPDATE_REASON_CHANGED_CHART_TYPE \ + |RRD_FLAG_UPDATE_REASON_CHANGED_PRIORITY \ + |RRD_FLAG_UPDATE_REASON_CHANGED_UPDATE_EVERY \ + |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 \ + |RRD_FLAG_UPDATE_REASON_CHANGED_FLAGS \ + ) + +#define RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS ( \ + RRD_FLAG_ARCHIVED \ + |RRD_FLAG_DONT_PROCESS \ + |RRD_FLAG_HIDDEN \ + |RRD_FLAG_ALL_UPDATE_REASONS \ + ) + +#define RRD_FLAGS_PREVENTING_DELETIONS ( \ + RRD_FLAG_QUEUED \ + |RRD_FLAG_COLLECTED \ + |RRD_FLAG_UPDATE_REASON_LOAD_SQL \ + |RRD_FLAG_UPDATE_REASON_NEW_OBJECT \ + |RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT \ + |RRD_FLAG_UPDATE_REASON_CHANGED_LINKING \ +) + +#define rrd_flag_set_updated(obj, reason) (obj)->flags |= (RRD_FLAG_UPDATED | (reason)) +#define rrd_flag_unset_updated(obj) (obj)->flags &= ~(RRD_FLAG_UPDATED | RRD_FLAG_ALL_UPDATE_REASONS) + +#define rrd_flag_set_collected(obj) do { \ + if(likely( !((obj)->flags & RRD_FLAG_COLLECTED))) \ + (obj)->flags |= (RRD_FLAG_COLLECTED | RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED | RRD_FLAG_UPDATED); \ + if(likely( ((obj)->flags & (RRD_FLAG_ARCHIVED | RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED)))) \ + (obj)->flags &= ~(RRD_FLAG_ARCHIVED | RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED); \ + if(unlikely(((obj)->flags & (RRD_FLAG_DELETED | RRD_FLAG_UPDATE_REASON_ZERO_RETENTION)))) \ + (obj)->flags &= ~(RRD_FLAG_DELETED | RRD_FLAG_UPDATE_REASON_ZERO_RETENTION); \ + if(unlikely(((obj)->flags & RRD_FLAG_DONT_PROCESS))) \ + (obj)->flags &= ~RRD_FLAG_DONT_PROCESS; \ +} while(0) + +#define rrd_flag_set_archived(obj) do { \ + if(likely( !((obj)->flags & RRD_FLAG_ARCHIVED))) \ + (obj)->flags |= (RRD_FLAG_ARCHIVED | RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED | RRD_FLAG_UPDATED); \ + if(likely( ((obj)->flags & (RRD_FLAG_COLLECTED | RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED)))) \ + (obj)->flags &= ~(RRD_FLAG_COLLECTED | RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED); \ + if(unlikely(((obj)->flags & (RRD_FLAG_DELETED | RRD_FLAG_UPDATE_REASON_ZERO_RETENTION)))) \ + (obj)->flags &= ~(RRD_FLAG_DELETED | RRD_FLAG_UPDATE_REASON_ZERO_RETENTION); \ +} while(0) + +#define rrd_flag_set_deleted(obj, reason) do { \ + if(likely( !((obj)->flags & RRD_FLAG_DELETED))) \ + (obj)->flags |= (RRD_FLAG_DELETED | RRD_FLAG_UPDATE_REASON_ZERO_RETENTION | RRD_FLAG_UPDATED | (reason)); \ + if(unlikely(((obj)->flags & RRD_FLAG_ARCHIVED))) \ + (obj)->flags &= ~RRD_FLAG_ARCHIVED; \ + if(likely( ((obj)->flags & RRD_FLAG_COLLECTED))) \ + (obj)->flags &= ~RRD_FLAG_COLLECTED; \ +} while(0) + + +#define rrd_flag_is_collected(obj) ((obj)->flags & RRD_FLAG_COLLECTED) +#define rrd_flag_is_archived(obj) ((obj)->flags & RRD_FLAG_ARCHIVED) + +static struct rrdcontext_reason { + RRD_FLAGS flag; + const char *name; + usec_t delay_ut; +} rrdcontext_reasons[] = { + // context related + { RRD_FLAG_UPDATE_REASON_NEW_OBJECT, "object created", 60 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT, "object updated", 60 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_LOAD_SQL, "loaded from sql", 60 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_CHANGED_TITLE, "changed title", 30 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_CHANGED_UNITS, "changed units", 30 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_CHANGED_FAMILY, "changed family", 30 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_CHANGED_PRIORITY, "changed priority", 30 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_ZERO_RETENTION, "has no retention", 60 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T, "updated first_time_t", 30 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T, "updated last_time_t", 60 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_CHANGED_CHART_TYPE, "changed chart type", 30 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED, "stopped collected", 60 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED, "started collected", 0 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_UNUSED, "unused", 0 * USEC_PER_SEC }, + + // not context related + { RRD_FLAG_UPDATE_REASON_CHANGED_UUID, "changed uuid", 60 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_CHANGED_UPDATE_EVERY, "changed updated every",60 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_CHANGED_LINKING, "changed rrd link", 60 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_CHANGED_NAME, "changed name", 60 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD, "child disconnected", 30 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_DB_ROTATION, "db rotation", 60 * USEC_PER_SEC }, + { RRD_FLAG_UPDATE_REASON_CHANGED_FLAGS, "changed flags", 60 * USEC_PER_SEC }, + + // terminator + { 0, NULL, 0 }, +}; + + +typedef struct rrdmetric { + uuid_t uuid; + + STRING *id; + STRING *name; + + RRDDIM *rrddim; + + time_t first_time_t; + time_t last_time_t; + RRD_FLAGS flags; + + struct rrdinstance *ri; + + usec_t created_ut; // the time this object was created +} RRDMETRIC; + +typedef struct rrdinstance { + uuid_t uuid; + + STRING *id; + STRING *name; + STRING *title; + STRING *units; + STRING *family; + uint32_t priority; + RRDSET_TYPE chart_type; + + RRD_FLAGS flags; // flags related to this instance + time_t first_time_t; + time_t last_time_t; + + int update_every; // data collection frequency + RRDSET *rrdset; // pointer to RRDSET when collected, or NULL + + DICTIONARY *rrdlabels; // linked to RRDSET->state->chart_labels or own version + + struct rrdcontext *rc; + DICTIONARY *rrdmetrics; +} 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_t; + time_t last_time_t; + + VERSIONED_CONTEXT_DATA hub; + + DICTIONARY *rrdinstances; + RRDHOST *rrdhost; + + 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 deduped) this context + } queue; + + netdata_mutex_t mutex; +} RRDCONTEXT; + +// ---------------------------------------------------------------------------- +// helper one-liners for RRDMETRIC + +static inline RRDMETRIC *rrdmetric_acquired_value(RRDMETRIC_ACQUIRED *rma) { + return dictionary_acquired_item_value((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); +} + +// ---------------------------------------------------------------------------- +// helper one-liners for RRDINSTANCE + +static inline RRDINSTANCE_ACQUIRED *rrdinstance_dup(RRDINSTANCE_ACQUIRED *ria) { + return (RRDINSTANCE_ACQUIRED *)dictionary_acquired_item_dup((DICTIONARY_ITEM *)ria); +} + +static inline RRDINSTANCE *rrdinstance_acquired_value(RRDINSTANCE_ACQUIRED *ria) { + return dictionary_acquired_item_value((DICTIONARY_ITEM *)ria); +} + +static inline const char *rrdinstance_acquired_name(RRDINSTANCE_ACQUIRED *ria) { + return dictionary_acquired_item_name((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); +} + +// ---------------------------------------------------------------------------- +// helper one-liners for RRDCONTEXT + +static inline RRDCONTEXT_ACQUIRED *rrdcontext_dup(RRDCONTEXT_ACQUIRED *rca) { + return (RRDCONTEXT_ACQUIRED *)dictionary_acquired_item_dup((DICTIONARY_ITEM *)rca); +} + +static inline const char *rrdcontext_acquired_name(RRDCONTEXT_ACQUIRED *rca) { + return dictionary_acquired_item_name((DICTIONARY_ITEM *)rca); +} + +static inline RRDCONTEXT *rrdcontext_acquired_value(RRDCONTEXT_ACQUIRED *rca) { + return dictionary_acquired_item_value((DICTIONARY_ITEM *)rca); +} + +static inline RRDCONTEXT_ACQUIRED *rrdcontext_acquire(RRDHOST *host, const char *name) { + return (RRDCONTEXT_ACQUIRED *)dictionary_get_and_acquire_item((DICTIONARY *)host->rrdctx, name); +} + +static inline void rrdcontext_release(RRDCONTEXT_ACQUIRED *rca) { + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + dictionary_acquired_item_release((DICTIONARY *)rc->rrdhost->rrdctx, (DICTIONARY_ITEM *)rca); +} + +static void rrdcontext_recalculate_context_retention(RRDCONTEXT *rc, RRD_FLAGS reason, int job_id); +static void rrdcontext_recalculate_host_retention(RRDHOST *host, RRD_FLAGS reason, int job_id); + +#define rrdcontext_version_hash(host) rrdcontext_version_hash_with_callback(host, NULL, false, NULL) +static uint64_t rrdcontext_version_hash_with_callback(RRDHOST *host, void (*callback)(RRDCONTEXT *, bool, void *), bool snapshot, void *bundle); + +void rrdcontext_delete_from_sql_unsafe(RRDCONTEXT *rc); + +#define rrdcontext_lock(rc) netdata_mutex_lock(&((rc)->mutex)) +#define rrdcontext_unlock(rc) netdata_mutex_unlock(&((rc)->mutex)) + +// ---------------------------------------------------------------------------- +// Updates triggers + +static void rrdmetric_trigger_updates(RRDMETRIC *rm, bool force, bool escalate); +static void rrdinstance_trigger_updates(RRDINSTANCE *ri, bool force, bool escalate); +static void rrdcontext_trigger_updates(RRDCONTEXT *rc, bool force); + +// ---------------------------------------------------------------------------- +// visualizing flags + +static void rrd_flags_to_buffer(RRD_FLAGS flags, BUFFER *wb) { + if(flags & RRD_FLAG_QUEUED) + buffer_strcat(wb, "QUEUED "); + + if(flags & RRD_FLAG_DELETED) + buffer_strcat(wb, "DELETED "); + + if(flags & RRD_FLAG_COLLECTED) + buffer_strcat(wb, "COLLECTED "); + + if(flags & RRD_FLAG_UPDATED) + buffer_strcat(wb, "UPDATED "); + + if(flags & RRD_FLAG_ARCHIVED) + buffer_strcat(wb, "ARCHIVED "); + + if(flags & RRD_FLAG_OWN_LABELS) + buffer_strcat(wb, "OWN_LABELS "); + + if(flags & RRD_FLAG_LIVE_RETENTION) + buffer_strcat(wb, "LIVE_RETENTION "); + + if(flags & RRD_FLAG_DONT_PROCESS) + buffer_strcat(wb, "DONT_PROCESS "); + + if(flags & RRD_FLAG_HIDDEN) + buffer_strcat(wb, "HIDDEN "); +} + +static void rrd_reasons_to_buffer(RRD_FLAGS flags, BUFFER *wb) { + for(int i = 0, added = 0; rrdcontext_reasons[i].name ; i++) { + if (flags & rrdcontext_reasons[i].flag) { + if (added) + buffer_strcat(wb, ", "); + buffer_strcat(wb, rrdcontext_reasons[i].name); + added++; + } + } +} + +// ---------------------------------------------------------------------------- +// logging of all data collected + +#ifdef LOG_TRANSITIONS +static void log_transition(STRING *metric, STRING *instance, STRING *context, RRD_FLAGS flags, const char *msg) { + BUFFER *wb = buffer_create(1000); + + buffer_sprintf(wb, "RRD TRANSITION: context '%s'", string2str(context)); + + if(instance) + buffer_sprintf(wb, ", instance '%s'", string2str(instance)); + + if(metric) + buffer_sprintf(wb, ", metric '%s'", string2str(metric)); + + buffer_sprintf(wb, ", triggered by %s: ", msg); + + rrd_flags_to_buffer(flags, wb); + + buffer_strcat(wb, ", reasons: "); + + rrd_reasons_to_buffer(flags, wb); + + internal_error(true, "%s", buffer_tostring(wb)); + buffer_free(wb); +} +#else +#define log_transition(metric, instance, context, flags, msg) debug_dummy() +#endif + +#ifdef LOG_RRDINSTANCES +static void rrdinstance_log(RRDINSTANCE *ri, const char *msg) { + char uuid[UUID_STR_LEN]; + + uuid_unparse(ri->uuid, uuid); + + BUFFER *wb = buffer_create(1000); + + buffer_sprintf(wb, + "RRDINSTANCE: %s id '%s' (host '%s'), uuid '%s', name '%s', context '%s', title '%s', units '%s', family '%s', priority %zu, chart type '%s', update every %d, rrdset '%s', flags %s%s%s%s%s%s%s%s, first_time_t %ld, last_time_t %ld", + msg, + string2str(ri->id), + ri->rc->rrdhost->hostname, + uuid, + string2str(ri->name), + string2str(ri->rc->id), + string2str(ri->title), + string2str(ri->units), + string2str(ri->family), + ri->priority, + rrdset_type_name(ri->chart_type), + ri->update_every, + ri->rrdset?ri->rrdset->id:"NONE", + ri->flags & RRD_FLAG_DELETED ?"DELETED ":"", + ri->flags & RRD_FLAG_UPDATED ?"UPDATED ":"", + rrd_flag_is_collected(ri) ?"COLLECTED ":"", + rrd_flag_is_archived(ri) ?"ARCHIVED ":"", + ri->flags & RRD_FLAG_OWNLABELS ?"OWNLABELS ":"", + ri->flags & RRD_FLAG_LIVE_RETENTION ?"LIVE ":"", + ri->flags & RRD_FLAG_QUEUED ?"QUEUED ":"", + ri->flags & RRD_FLAG_DONT_TRIGGER ?"BLOCKED ":"", + ri->first_time_t, + ri->last_time_t + ); + + buffer_strcat(wb, ", update reasons: { "); + for(int i = 0, added = 0; rrdcontext_reasons[i].name ;i++) + if(ri->flags & rrdcontext_reasons[i].flag) { + if(added) buffer_strcat(wb, ", "); + buffer_strcat(wb, rrdcontext_reasons[i].name); + added++; + } + buffer_strcat(wb, " }"); + + buffer_strcat(wb, ", labels: { "); + if(ri->rrdlabels) { + if(!rrdlabels_to_buffer(ri->rrdlabels, wb, "", "=", "'", ", ", NULL, NULL, NULL, NULL)) + buffer_strcat(wb, "EMPTY }"); + else + buffer_strcat(wb, " }"); + } + else + buffer_strcat(wb, "NONE }"); + + buffer_strcat(wb, ", metrics: { "); + if(ri->rrdmetrics) { + RRDMETRIC *v; + int i = 0; + dfe_start_read((DICTIONARY *)ri->rrdmetrics, v) { + buffer_sprintf(wb, "%s%s", i?",":"", v_name); + i++; + } + dfe_done(v); + + if(!i) + buffer_strcat(wb, "EMPTY }"); + else + buffer_strcat(wb, " }"); + } + else + buffer_strcat(wb, "NONE }"); + + internal_error(true, "%s", buffer_tostring(wb)); + buffer_free(wb); +} +#else +#define rrdinstance_log(ir, msg) debug_dummy() +#endif + +// ---------------------------------------------------------------------------- +// RRDMETRIC + +static void rrdmetric_free(RRDMETRIC *rm) { + string_freez(rm->id); + string_freez(rm->name); + + rm->id = NULL; + rm->name = NULL; + rm->ri = NULL; +} + +static void rrdmetric_update_retention(RRDMETRIC *rm) { + time_t min_first_time_t = LONG_MAX, max_last_time_t = 0; + + if(rm->rrddim) { + min_first_time_t = rrddim_first_entry_t(rm->rrddim); + max_last_time_t = rrddim_last_entry_t(rm->rrddim); + } +#ifdef ENABLE_DBENGINE + else { + RRDHOST *rrdhost = rm->ri->rc->rrdhost; + for (int tier = 0; tier < storage_tiers; tier++) { + if(!rrdhost->storage_instance[tier]) continue; + + time_t first_time_t, last_time_t; + if (rrdeng_metric_retention_by_uuid(rrdhost->storage_instance[tier], &rm->uuid, &first_time_t, &last_time_t) == 0) { + if (first_time_t < min_first_time_t) + min_first_time_t = first_time_t; + + if (last_time_t > max_last_time_t) + max_last_time_t = last_time_t; + } + } + } +#endif + + if(min_first_time_t == LONG_MAX) + min_first_time_t = 0; + + if(min_first_time_t > max_last_time_t) { + internal_error(true, "RRDMETRIC: retention of '%s' is flipped", string2str(rm->id)); + time_t tmp = min_first_time_t; + min_first_time_t = max_last_time_t; + max_last_time_t = tmp; + } + + // check if retention changed + + if (min_first_time_t != rm->first_time_t) { + rm->first_time_t = min_first_time_t; + rrd_flag_set_updated(rm, RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T); + } + + if (max_last_time_t != rm->last_time_t) { + rm->last_time_t = max_last_time_t; + rrd_flag_set_updated(rm, RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T); + } + + if(unlikely(!rm->first_time_t && !rm->last_time_t)) + rrd_flag_set_deleted(rm, RRD_FLAG_UPDATE_REASON_ZERO_RETENTION); + + rm->flags |= RRD_FLAG_LIVE_RETENTION; +} + +// called when this rrdmetric is inserted to the rrdmetrics dictionary of a rrdinstance +static void rrdmetric_insert_callback(const char *id __maybe_unused, void *value, void *data) { + RRDMETRIC *rm = value; + + // link it to its parent + rm->ri = data; + + // remove flags that we need to figure out at runtime + rm->flags = rm->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS; + + rm->created_ut = now_realtime_usec(); + + // signal the react callback to do the job + rrd_flag_set_updated(rm, RRD_FLAG_UPDATE_REASON_NEW_OBJECT); +} + +// called when this rrdmetric is deleted from the rrdmetrics dictionary of a rrdinstance +static void rrdmetric_delete_callback(const char *id __maybe_unused, void *value, void *data __maybe_unused) { + RRDMETRIC *rm = value; + + internal_error(rm->rrddim, "RRDMETRIC: '%s' is freed but there is a RRDDIM linked to it.", string2str(rm->id)); + + // free the resources + rrdmetric_free(rm); +} + +// called when the same rrdmetric is inserted again to the rrdmetrics dictionary of a rrdinstance +static void rrdmetric_conflict_callback(const char *id __maybe_unused, void *oldv, void *newv, void *data __maybe_unused) { + RRDMETRIC *rm = oldv; + RRDMETRIC *rm_new = newv; + + internal_error(rm->id != rm_new->id, + "RRDMETRIC: '%s' cannot change id to '%s'", + string2str(rm->id), string2str(rm_new->id)); + + if(uuid_compare(rm->uuid, rm_new->uuid) != 0) { + char uuid1[UUID_STR_LEN], uuid2[UUID_STR_LEN]; + uuid_unparse(rm->uuid, uuid1); + uuid_unparse(rm_new->uuid, uuid2); + internal_error(true, "RRDMETRIC: '%s' of instance '%s' changed uuid from '%s' to '%s'", string2str(rm->id), string2str(rm->ri->id), uuid1, uuid2); + uuid_copy(rm->uuid, rm_new->uuid); + rrd_flag_set_updated(rm, RRD_FLAG_UPDATE_REASON_CHANGED_UUID); + } + + if(rm->rrddim && rm_new->rrddim && rm->rrddim != rm_new->rrddim) { + rm->rrddim = rm_new->rrddim; + rrd_flag_set_updated(rm, RRD_FLAG_UPDATE_REASON_CHANGED_LINKING); + } + + if(rm->rrddim && uuid_compare(rm->uuid, rm->rrddim->metric_uuid) != 0) { + char uuid1[UUID_STR_LEN], uuid2[UUID_STR_LEN]; + uuid_unparse(rm->uuid, uuid1); + uuid_unparse(rm_new->uuid, uuid2); + internal_error(true, "RRDMETRIC: '%s' is linked to RRDDIM '%s' but they have different UUIDs. RRDMETRIC has '%s', RRDDIM has '%s'", string2str(rm->id), rm->rrddim->id, uuid1, uuid2); + } + + if(rm->rrddim != rm_new->rrddim) + rm->rrddim = rm_new->rrddim; + + if(rm->name != rm_new->name) { + STRING *old = rm->name; + rm->name = string_dup(rm_new->name); + string_freez(old); + rrd_flag_set_updated(rm, RRD_FLAG_UPDATE_REASON_CHANGED_NAME); + } + + if(!rm->first_time_t || (rm_new->first_time_t && rm_new->first_time_t < rm->first_time_t)) { + rm->first_time_t = rm_new->first_time_t; + rrd_flag_set_updated(rm, RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T); + } + + if(!rm->last_time_t || (rm_new->last_time_t && rm_new->last_time_t > rm->last_time_t)) { + rm->last_time_t = rm_new->last_time_t; + rrd_flag_set_updated(rm, RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T); + } + + rm->flags |= (rm_new->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS); + + if(rrd_flag_is_collected(rm) && rrd_flag_is_archived(rm)) + rrd_flag_set_collected(rm); + + if(rm->flags & RRD_FLAG_UPDATED) + rm->flags |= RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT; + + rrdmetric_free(rm_new); + + // the react callback will continue from here +} + +static void rrdmetric_react_callback(const char *id __maybe_unused, void *value, void *data __maybe_unused) { + RRDMETRIC *rm = value; + + rrdmetric_trigger_updates(rm, false, true); +} + +static void rrdmetrics_create(RRDINSTANCE *ri) { + if(unlikely(!ri)) return; + if(likely(ri->rrdmetrics)) return; + + ri->rrdmetrics = dictionary_create(DICTIONARY_FLAG_DONT_OVERWRITE_VALUE); + dictionary_register_insert_callback(ri->rrdmetrics, rrdmetric_insert_callback, (void *)ri); + dictionary_register_delete_callback(ri->rrdmetrics, rrdmetric_delete_callback, (void *)ri); + dictionary_register_conflict_callback(ri->rrdmetrics, rrdmetric_conflict_callback, (void *)ri); + dictionary_register_react_callback(ri->rrdmetrics, rrdmetric_react_callback, (void *)ri); +} + +static void rrdmetrics_destroy(RRDINSTANCE *ri) { + if(unlikely(!ri || !ri->rrdmetrics)) return; + dictionary_destroy(ri->rrdmetrics); + ri->rrdmetrics = NULL; +} + +static inline bool rrdmetric_should_be_deleted(RRDMETRIC *rm) { + if(likely(!(rm->flags & RRD_FLAG_DELETED))) + return false; + + if(likely(!(rm->flags & RRD_FLAG_LIVE_RETENTION))) + return false; + + if(unlikely(rm->flags & RRD_FLAGS_PREVENTING_DELETIONS)) + return false; + + if(likely(rm->rrddim)) + return false; + + if((now_realtime_usec() - rm->created_ut) < 600 * USEC_PER_SEC) + return false; + + rrdmetric_update_retention(rm); + if(rm->first_time_t || rm->last_time_t) + return false; + + return true; +} + +static void rrdmetric_trigger_updates(RRDMETRIC *rm, bool force, bool escalate) { + if(likely(!force && !(rm->flags & RRD_FLAG_UPDATED))) return; + + if(unlikely(rrd_flag_is_collected(rm) && !rm->rrddim)) + rrd_flag_set_archived(rm); + + if(unlikely((rm->flags & RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD) && rrd_flag_is_collected(rm))) + rrd_flag_set_archived(rm); + + rrdmetric_update_retention(rm); + + if(unlikely(escalate && rm->flags & RRD_FLAG_UPDATED && !(rm->ri->flags & RRD_FLAG_DONT_PROCESS))) { + log_transition(rm->id, rm->ri->id, rm->ri->rc->id, rm->flags, "RRDMETRIC"); + rrdinstance_trigger_updates(rm->ri, true, true); + } +} + +static inline void rrdmetric_from_rrddim(RRDDIM *rd) { + if(unlikely(!rd->rrdset)) + fatal("RRDMETRIC: rrddim '%s' does not have a rrdset.", rd->id); + + if(unlikely(!rd->rrdset->rrdhost)) + fatal("RRDMETRIC: rrdset '%s' does not have a rrdhost", rd->rrdset->id); + + if(unlikely(!rd->rrdset->rrdinstance)) + fatal("RRDMETRIC: rrdset '%s' does not have a rrdinstance", rd->rrdset->id); + + RRDINSTANCE *ri = rrdinstance_acquired_value(rd->rrdset->rrdinstance); + + RRDMETRIC trm = { + .id = string_strdupz(rd->id), + .name = string_strdupz(rd->name), + .flags = RRD_FLAG_NONE, + .rrddim = rd, + }; + uuid_copy(trm.uuid, rd->metric_uuid); + + RRDMETRIC_ACQUIRED *rma = (RRDMETRIC_ACQUIRED *)dictionary_set_and_acquire_item(ri->rrdmetrics, string2str(trm.id), &trm, sizeof(trm)); + + if(rd->rrdmetric) + rrdmetric_release(rd->rrdmetric); + + rd->rrdmetric = rma; +} + +#define rrddim_get_rrdmetric(rd) rrddim_get_rrdmetric_with_trace(rd, __FUNCTION__) +static inline RRDMETRIC *rrddim_get_rrdmetric_with_trace(RRDDIM *rd, const char *function) { + if(unlikely(!rd->rrdmetric)) { + error("RRDMETRIC: RRDDIM '%s' is not linked to an RRDMETRIC at %s()", rd->id, function); + return NULL; + } + + RRDMETRIC *rm = rrdmetric_acquired_value(rd->rrdmetric); + + if(unlikely(rm->rrddim != rd)) + fatal("RRDMETRIC: '%s' is not linked to RRDDIM '%s' at %s()", string2str(rm->id), rd->id, function); + + return rm; +} + +static inline void rrdmetric_rrddim_is_freed(RRDDIM *rd) { + RRDMETRIC *rm = rrddim_get_rrdmetric(rd); + if(unlikely(!rm)) return; + + if(unlikely(rrd_flag_is_collected(rm))) + rrd_flag_set_archived(rm); + + rm->rrddim = NULL; + rrdmetric_trigger_updates(rm, false, true); + rrdmetric_release(rd->rrdmetric); + rd->rrdmetric = NULL; +} + +static inline void rrdmetric_updated_rrddim_flags(RRDDIM *rd) { + RRDMETRIC *rm = rrddim_get_rrdmetric(rd); + if(unlikely(!rm)) return; + + if(unlikely(rd->flags & (RRDDIM_FLAG_ARCHIVED | RRDDIM_FLAG_OBSOLETE))) { + if(unlikely(rrd_flag_is_collected(rm))) + rrd_flag_set_archived(rm); + } + + rrdmetric_trigger_updates(rm, false, true); +} + +static inline void rrdmetric_collected_rrddim(RRDDIM *rd) { + RRDMETRIC *rm = rrddim_get_rrdmetric(rd); + if(unlikely(!rm)) return; + + if(unlikely(!rrd_flag_is_collected(rm))) + rrd_flag_set_collected(rm); + + rrdmetric_trigger_updates(rm, false, true); +} + +// ---------------------------------------------------------------------------- +// RRDINSTANCE + +static void rrdinstance_free(RRDINSTANCE *ri) { + + if(ri->flags & RRD_FLAG_OWN_LABELS) + dictionary_destroy(ri->rrdlabels); + + rrdmetrics_destroy(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 char *id __maybe_unused, void *value, void *data) { + static STRING *ml_anomaly_rates_id = NULL; + + if(unlikely(!ml_anomaly_rates_id)) + ml_anomaly_rates_id = string_strdupz(ML_ANOMALY_RATES_CHART_ID); + + RRDINSTANCE *ri = value; + + // link it to its parent + ri->rc = data; + + ri->flags = ri->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS; + + if(!ri->name) + ri->name = string_dup(ri->id); + + if(ri->rrdset && ri->rrdset->state) { + ri->rrdlabels = ri->rrdset->state->chart_labels; + if(ri->flags & RRD_FLAG_OWN_LABELS) + ri->flags &= ~RRD_FLAG_OWN_LABELS; + } + else { + ri->rrdlabels = rrdlabels_create(); + ri->flags |= RRD_FLAG_OWN_LABELS; + } + + if(ri->rrdset) { + if(unlikely((ri->rrdset->flags & RRDSET_FLAG_HIDDEN) || (ri->rrdset->state && ri->rrdset->state->is_ar_chart))) + ri->flags |= RRD_FLAG_HIDDEN; + else + ri->flags &= ~RRD_FLAG_HIDDEN; + } + + // we need this when loading from SQL + if(unlikely(ri->id == ml_anomaly_rates_id)) + ri->flags |= RRD_FLAG_HIDDEN; + + rrdmetrics_create(ri); + rrdinstance_log(ri, "INSERT"); + + // 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 char *id, void *value, void *data) { + (void)id; + RRDCONTEXT *rc = data; (void)rc; + RRDINSTANCE *ri = (RRDINSTANCE *)value; + + rrdinstance_log(ri, "DELETE"); + + internal_error(ri->rrdset, "RRDINSTANCE: '%s' is freed but there is a RRDSET linked to it.", string2str(ri->id)); + + rrdinstance_free(ri); +} + +static void rrdinstance_conflict_callback(const char *id __maybe_unused, void *oldv, void *newv, void *data __maybe_unused) { + RRDINSTANCE *ri = (RRDINSTANCE *)oldv; + RRDINSTANCE *ri_new = (RRDINSTANCE *)newv; + + internal_error(ri->id != ri_new->id, + "RRDINSTANCE: '%s' cannot change id to '%s'", + string2str(ri->id), string2str(ri_new->id)); + + if(uuid_compare(ri->uuid, ri_new->uuid) != 0) { + uuid_copy(ri->uuid, ri_new->uuid); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_UUID); + } + + 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); + } + + if(ri->rrdset && ri->rrdset->chart_uuid && uuid_compare(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), ri->rrdset->id, uuid1, uuid2); + } + + 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_NAME); + } + + 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_TITLE); + } + + 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_UNITS); + } + + 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_FAMILY); + } + + 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_CHART_TYPE); + } + + if(ri->priority != ri_new->priority) { + ri->priority = ri_new->priority; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_PRIORITY); + } + + if(ri->update_every != ri_new->update_every) { + ri->update_every = ri_new->update_every; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_UPDATE_EVERY); + } + + if(ri->rrdset != ri_new->rrdset) { + ri->rrdset = ri_new->rrdset; + + if(ri->rrdset && (ri->flags & RRD_FLAG_OWN_LABELS)) { + DICTIONARY *old = ri->rrdlabels; + ri->rrdlabels = ri->rrdset->state->chart_labels; + ri->flags &= ~RRD_FLAG_OWN_LABELS; + rrdlabels_destroy(old); + } + else if(!ri->rrdset && !(ri->flags & RRD_FLAG_OWN_LABELS)) { + ri->rrdlabels = rrdlabels_create(); + ri->flags |= RRD_FLAG_OWN_LABELS; + } + } + + if(ri->rrdset) { + if(unlikely((ri->rrdset->flags & RRDSET_FLAG_HIDDEN) || (ri->rrdset->state && ri->rrdset->state->is_ar_chart))) + ri->flags |= RRD_FLAG_HIDDEN; + else + ri->flags &= ~RRD_FLAG_HIDDEN; + } + + ri->flags |= (ri_new->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS); + + if(rrd_flag_is_collected(ri) && rrd_flag_is_archived(ri)) + rrd_flag_set_collected(ri); + + if(ri->flags & RRD_FLAG_UPDATED) + ri->flags |= RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT; + + rrdinstance_log(ri, "CONFLICT"); + + // free the new one + rrdinstance_free(ri_new); + + // the react callback will continue from here +} + +static void rrdinstance_react_callback(const char *id __maybe_unused, void *value, void *data __maybe_unused) { + RRDINSTANCE *ri = value; + + rrdinstance_trigger_updates(ri, false, true); +} + +void rrdinstances_create(RRDCONTEXT *rc) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + if(unlikely(!rc || rc->rrdinstances)) return; + + rc->rrdinstances = dictionary_create(DICTIONARY_FLAG_DONT_OVERWRITE_VALUE); + dictionary_register_insert_callback(rc->rrdinstances, rrdinstance_insert_callback, (void *)rc); + dictionary_register_delete_callback(rc->rrdinstances, rrdinstance_delete_callback, (void *)rc); + dictionary_register_conflict_callback(rc->rrdinstances, rrdinstance_conflict_callback, (void *)rc); + dictionary_register_react_callback(rc->rrdinstances, rrdinstance_react_callback, (void *)rc); +} + +void rrdinstances_destroy(RRDCONTEXT *rc) { + if(unlikely(!rc || !rc->rrdinstances)) return; + + dictionary_destroy(rc->rrdinstances); + rc->rrdinstances = NULL; +} + +static inline bool rrdinstance_should_be_deleted(RRDINSTANCE *ri) { + if(likely(!(ri->flags & RRD_FLAG_DELETED))) + return false; + + if(likely(!(ri->flags & RRD_FLAG_LIVE_RETENTION))) + return false; + + if(unlikely(ri->flags & RRD_FLAGS_PREVENTING_DELETIONS)) + return false; + + if(likely(ri->rrdset)) + return false; + + if(unlikely(dictionary_stats_referenced_items(ri->rrdmetrics) != 0)) + return false; + + if(unlikely(dictionary_stats_entries(ri->rrdmetrics) != 0)) + return false; + + if(ri->first_time_t || ri->last_time_t) + return false; + + return true; +} + +static void rrdinstance_trigger_updates(RRDINSTANCE *ri, bool force, bool escalate) { + if(unlikely(ri->flags & RRD_FLAG_DONT_PROCESS)) return; + if(unlikely(!force && !(ri->flags & RRD_FLAG_UPDATED))) return; + + if(likely(ri->rrdset)) { + if(unlikely(ri->rrdset->priority != ri->priority)) { + ri->priority = ri->rrdset->priority; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_PRIORITY); + } + if(unlikely(ri->rrdset->update_every != ri->update_every)) { + ri->update_every = ri->rrdset->update_every; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_UPDATE_EVERY); + } + } + else if(unlikely(rrd_flag_is_collected(ri))) { + rrd_flag_set_archived(ri); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_LINKING); + } + + time_t min_first_time_t = LONG_MAX, max_last_time_t = 0; + size_t metrics_active = 0, metrics_deleted = 0; + bool live_retention = true, currently_collected = false; + { + RRDMETRIC *rm; + dfe_start_read((DICTIONARY *)ri->rrdmetrics, rm) { + if(!(rm->flags & RRD_FLAG_LIVE_RETENTION)) + live_retention = false; + + if (unlikely((rrdmetric_should_be_deleted(rm)))) { + metrics_deleted++; + rrd_flag_unset_updated(rm); + continue; + } + + if(rm->flags & RRD_FLAG_COLLECTED) + currently_collected = true; + + metrics_active++; + + if (rm->first_time_t && rm->first_time_t < min_first_time_t) + min_first_time_t = rm->first_time_t; + + if (rm->last_time_t && rm->last_time_t > max_last_time_t) + max_last_time_t = rm->last_time_t; + + rrd_flag_unset_updated(rm); + } + dfe_done(rm); + } + + if(live_retention && !(ri->flags & RRD_FLAG_LIVE_RETENTION)) + ri->flags |= RRD_FLAG_LIVE_RETENTION; + else if(!live_retention && (ri->flags & RRD_FLAG_LIVE_RETENTION)) + ri->flags &= ~RRD_FLAG_LIVE_RETENTION; + + if(unlikely(!metrics_active)) { + // no metrics available + + if(ri->first_time_t) { + ri->first_time_t = 0; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T); + } + + if(ri->last_time_t) { + ri->last_time_t = 0; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T); + } + + rrd_flag_set_deleted(ri, RRD_FLAG_UPDATE_REASON_ZERO_RETENTION); + } + else { + // we have active metrics... + + if (unlikely(min_first_time_t == LONG_MAX)) + min_first_time_t = 0; + + if (unlikely(min_first_time_t == 0 || max_last_time_t == 0)) { + if(ri->first_time_t) { + ri->first_time_t = 0; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T); + } + + if(ri->last_time_t) { + ri->last_time_t = 0; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T); + } + + if(unlikely(live_retention)) + rrd_flag_set_deleted(ri, RRD_FLAG_UPDATE_REASON_ZERO_RETENTION); + } + else { + ri->flags &= ~RRD_FLAG_UPDATE_REASON_ZERO_RETENTION; + + if (unlikely(ri->first_time_t != min_first_time_t)) { + ri->first_time_t = min_first_time_t; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T); + } + + if (unlikely(ri->last_time_t != max_last_time_t)) { + ri->last_time_t = max_last_time_t; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T); + } + + if(likely(currently_collected)) + rrd_flag_set_collected(ri); + else + rrd_flag_set_archived(ri); + } + } + + if(unlikely(escalate && ri->flags & RRD_FLAG_UPDATED && !(ri->rc->flags & RRD_FLAG_DONT_PROCESS))) { + log_transition(NULL, ri->id, ri->rc->id, ri->flags, "RRDINSTANCE"); + rrdcontext_trigger_updates(ri->rc, true); + } +} + +static inline void rrdinstance_from_rrdset(RRDSET *st) { + RRDCONTEXT trc = { + .id = string_strdupz(st->context), + .title = string_strdupz(st->title), + .units = string_strdupz(st->units), + .family = string_strdupz(st->family), + .priority = st->priority, + .chart_type = st->chart_type, + .flags = RRD_FLAG_NONE, + .rrdhost = st->rrdhost, + }; + + RRDCONTEXT_ACQUIRED *rca = (RRDCONTEXT_ACQUIRED *)dictionary_set_and_acquire_item((DICTIONARY *)st->rrdhost->rrdctx, string2str(trc.id), &trc, sizeof(trc)); + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + + RRDINSTANCE tri = { + .id = string_strdupz(st->id), + .name = string_strdupz(st->name), + .units = string_strdupz(st->units), + .family = string_strdupz(st->family), + .title = string_strdupz(st->title), + .chart_type = st->chart_type, + .priority = st->priority, + .update_every = st->update_every, + .flags = RRD_FLAG_DONT_PROCESS, + .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) { + // 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 + rrdset_rdlock(st); + RRDDIM *rd; + rrddim_foreach_read(rd, st) { + if (!rd->rrdmetric) continue; + + RRDMETRIC *rm_old = rrdmetric_acquired_value(rd->rrdmetric); + rm_old->flags = 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_t = 0; + rm_old->last_time_t = 0; + + rrdmetric_release(rd->rrdmetric); + rd->rrdmetric = NULL; + + rrdmetric_from_rrddim(rd); + } + rrdset_unlock(st); + + // mark the old instance, ready to be deleted + if(!(ri_old->flags & RRD_FLAG_OWN_LABELS)) + ri_old->rrdlabels = rrdlabels_create(); + + ri_old->flags = 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_t = 0; + ri_old->last_time_t = 0; + + ri_old->flags &= ~RRD_FLAG_DONT_PROCESS; + rc_old->flags &= ~RRD_FLAG_DONT_PROCESS; + + rrdinstance_trigger_updates(ri_old, true, true); + + ri_old->flags |= RRD_FLAG_DONT_PROCESS; + rrdinstance_release(ria_old); + + /* + // trigger updates on the old context + if(!dictionary_stats_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_t = 0; + rc_old->last_time_t = 0; + rrdcontext_unlock(rc_old); + rrdcontext_trigger_updates(rc_old, true); + } + else + rrdcontext_trigger_updates(rc_old, true); + */ + + 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()", st->id, function); + return NULL; + } + + RRDINSTANCE *ri = rrdinstance_acquired_value(st->rrdinstance); + + if(unlikely(ri->rrdset != st)) + fatal("RRDINSTANCE: '%s' is not linked to RRDSET '%s' at %s()", string2str(ri->id), st->id, function); + + return ri; +} + +static inline void rrdinstance_rrdset_is_freed(RRDSET *st) { + RRDINSTANCE *ri = rrdset_get_rrdinstance(st); + if(unlikely(!ri)) return; + + rrd_flag_set_archived(ri); + + if(!(ri->flags & RRD_FLAG_OWN_LABELS)) { + ri->flags |= RRD_FLAG_OWN_LABELS; + ri->rrdlabels = rrdlabels_create(); + rrdlabels_copy(ri->rrdlabels, st->state->chart_labels); + } + + ri->rrdset = NULL; + + ri->flags &= ~RRD_FLAG_DONT_PROCESS; + rrdinstance_trigger_updates(ri, false, true); + ri->flags |= RRD_FLAG_DONT_PROCESS; + + rrdinstance_release(st->rrdinstance); + st->rrdinstance = NULL; + + rrdcontext_release(st->rrdcontext); + st->rrdcontext = NULL; +} + +static 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; + + STRING *old = ri->name; + ri->name = string_strdupz(st->name); + + if(ri->name != old) + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_NAME); + + string_freez(old); + + rrdinstance_trigger_updates(ri, false, true); +} + +static inline void rrdinstance_updated_rrdset_flags_no_action(RRDINSTANCE *ri, RRDSET *st) { + if(unlikely(st->flags & (RRDSET_FLAG_ARCHIVED | RRDSET_FLAG_OBSOLETE))) + rrd_flag_set_archived(ri); + + if(unlikely((st->flags & RRDSET_FLAG_HIDDEN) && !(ri->flags & RRD_FLAG_HIDDEN))) { + ri->flags |= RRD_FLAG_HIDDEN; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_FLAGS); + } + else if(unlikely(!(st->flags & RRDSET_FLAG_HIDDEN) && (ri->flags & RRD_FLAG_HIDDEN))) { + ri->flags &= ~RRD_FLAG_HIDDEN; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_FLAGS); + } +} + +static inline void rrdinstance_updated_rrdset_flags(RRDSET *st) { + RRDINSTANCE *ri = rrdset_get_rrdinstance(st); + if(unlikely(!ri)) return; + + rrdinstance_updated_rrdset_flags_no_action(ri, st); + + ri->flags &= ~RRD_FLAG_DONT_PROCESS; + rrdinstance_trigger_updates(ri, false, true); + ri->flags |= RRD_FLAG_DONT_PROCESS; +} + +static inline void rrdinstance_collected_rrdset(RRDSET *st) { + RRDINSTANCE *ri = rrdset_get_rrdinstance(st); + if(unlikely(!ri)) return; + + rrdinstance_updated_rrdset_flags_no_action(ri, st); + + if(unlikely(!rrd_flag_is_collected(ri))) + rrd_flag_set_collected(ri); + + if(unlikely(ri->flags & RRD_FLAG_DONT_PROCESS)) + ri->flags &= ~RRD_FLAG_DONT_PROCESS; + + rrdinstance_trigger_updates(ri, false, true); +} + +// ---------------------------------------------------------------------------- +// RRDCONTEXT + +static void rrdcontext_freez(RRDCONTEXT *rc) { + string_freez(rc->id); + string_freez(rc->title); + string_freez(rc->units); + string_freez(rc->family); +} + +static uint64_t rrdcontext_get_next_version(RRDCONTEXT *rc) { + time_t now = now_realtime_sec(); + uint64_t version = MAX(rc->version, rc->hub.version); + version = MAX((uint64_t)now, version); + version++; + return version; +} + +static void rrdcontext_message_send_unsafe(RRDCONTEXT *rc, bool snapshot __maybe_unused, void *bundle __maybe_unused) { + + // save it, so that we know the last version we sent to hub + rc->version = rc->hub.version = rrdcontext_get_next_version(rc); + rc->hub.id = string2str(rc->id); + rc->hub.title = string2str(rc->title); + rc->hub.units = string2str(rc->units); + rc->hub.family = string2str(rc->family); + rc->hub.chart_type = rrdset_type_name(rc->chart_type); + rc->hub.priority = rc->priority; + rc->hub.first_time_t = rc->first_time_t; + rc->hub.last_time_t = rrd_flag_is_collected(rc) ? 0 : rc->last_time_t; + rc->hub.deleted = (rc->flags & RRD_FLAG_DELETED) ? true : false; + +#ifdef ENABLE_ACLK + struct context_updated message = { + .id = rc->hub.id, + .version = rc->hub.version, + .title = rc->hub.title, + .units = rc->hub.units, + .family = rc->hub.family, + .chart_type = rc->hub.chart_type, + .priority = rc->hub.priority, + .first_entry = rc->hub.first_time_t, + .last_entry = rc->hub.last_time_t, + .deleted = rc->hub.deleted, + }; + + if(likely(!(rc->flags & RRD_FLAG_HIDDEN))) { + if (snapshot) { + if (!rc->hub.deleted) + contexts_snapshot_add_ctx_update(bundle, &message); + } + else + contexts_updated_add_ctx_update(bundle, &message); + } +#endif + + // store it to SQL + + if(rc->flags & RRD_FLAG_DELETED) { + rrdcontext_delete_from_sql_unsafe(rc); + } + else { + if (ctx_store_context(&rc->rrdhost->host_uuid, &rc->hub) != 0) + error("RRDCONTEXT: failed to save context '%s' version %lu to SQL.", rc->hub.id, rc->hub.version); + } +} + +static bool check_if_cloud_version_changed_unsafe(RRDCONTEXT *rc, bool sending __maybe_unused) { + bool id_changed = false, + title_changed = false, + units_changed = false, + family_changed = false, + chart_type_changed = false, + priority_changed = false, + first_time_changed = false, + last_time_changed = false, + deleted_changed = false; + + if(unlikely(string2str(rc->id) != rc->hub.id)) + id_changed = true; + + if(unlikely(string2str(rc->title) != rc->hub.title)) + title_changed = true; + + if(unlikely(string2str(rc->units) != rc->hub.units)) + units_changed = true; + + if(unlikely(string2str(rc->family) != rc->hub.family)) + family_changed = true; + + if(unlikely(rrdset_type_name(rc->chart_type) != rc->hub.chart_type)) + chart_type_changed = true; + + if(unlikely(rc->priority != rc->hub.priority)) + priority_changed = true; + + if(unlikely((uint64_t)rc->first_time_t != rc->hub.first_time_t)) + first_time_changed = true; + + if(unlikely((uint64_t)(rrd_flag_is_collected(rc) ? 0 : rc->last_time_t) != rc->hub.last_time_t)) + last_time_changed = true; + + if(unlikely(((rc->flags & RRD_FLAG_DELETED) ? true : false) != rc->hub.deleted)) + deleted_changed = true; + + if(unlikely(id_changed || title_changed || units_changed || family_changed || chart_type_changed || priority_changed || first_time_changed || last_time_changed || deleted_changed)) { + + internal_error(true, "RRDCONTEXT: %s NEW VERSION '%s'%s, version %zu, title '%s'%s, units '%s'%s, family '%s'%s, chart type '%s'%s, priority %u%s, first_time_t %ld%s, last_time_t %ld%s, deleted '%s'%s, (queued for %llu ms, expected %llu ms)", + sending?"SENDING":"QUEUE", + string2str(rc->id), id_changed ? " (CHANGED)" : "", + rc->version, + string2str(rc->title), title_changed ? " (CHANGED)" : "", + string2str(rc->units), units_changed ? " (CHANGED)" : "", + string2str(rc->family), family_changed ? " (CHANGED)" : "", + rrdset_type_name(rc->chart_type), chart_type_changed ? " (CHANGED)" : "", + rc->priority, priority_changed ? " (CHANGED)" : "", + rc->first_time_t, first_time_changed ? " (CHANGED)" : "", + rrd_flag_is_collected(rc) ? 0 : rc->last_time_t, last_time_changed ? " (CHANGED)" : "", + (rc->flags & RRD_FLAG_DELETED) ? "true" : "false", deleted_changed ? " (CHANGED)" : "", + sending ? (now_realtime_usec() - rc->queue.queued_ut) / USEC_PER_MS : 0, + sending ? (rc->queue.scheduled_dispatch_ut - rc->queue.queued_ut) / USEC_PER_SEC : 0 + ); + return true; + } + + return false; +} + +static void rrdcontext_insert_callback(const char *id, void *value, void *data) { + (void)id; + RRDHOST *host = (RRDHOST *)data; + RRDCONTEXT *rc = (RRDCONTEXT *)value; + + rc->rrdhost = host; + rc->flags = rc->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS; + + if(rc->hub.version) { + // we are loading data from the SQL database + + if(rc->version) + error("RRDCONTEXT: context '%s' is already initialized with version %lu, but it is loaded again from SQL with version %lu", string2str(rc->id), rc->version, rc->hub.version); + + // IMPORTANT + // replace all string pointers in rc->hub with our own versions + // the originals are coming from a tmp allocation of sqlite + + string_freez(rc->id); + rc->id = string_strdupz(rc->hub.id); + rc->hub.id = string2str(rc->id); + + string_freez(rc->title); + rc->title = string_strdupz(rc->hub.title); + rc->hub.title = string2str(rc->title); + + string_freez(rc->units); + rc->units = string_strdupz(rc->hub.units); + rc->hub.units = string2str(rc->units); + + string_freez(rc->family); + rc->family = string_strdupz(rc->hub.family); + rc->hub.family = string2str(rc->family); + + rc->chart_type = rrdset_type_id(rc->hub.chart_type); + rc->hub.chart_type = rrdset_type_name(rc->chart_type); + + rc->version = rc->hub.version; + rc->priority = rc->hub.priority; + rc->first_time_t = rc->hub.first_time_t; + rc->last_time_t = rc->hub.last_time_t; + + if(rc->hub.deleted || !rc->hub.first_time_t) + rrd_flag_set_deleted(rc, 0); + else { + if (rc->last_time_t == 0) + rrd_flag_set_collected(rc); + else + rrd_flag_set_archived(rc); + } + + rc->flags |= RRD_FLAG_UPDATE_REASON_LOAD_SQL; + } + else { + // we are adding this context now for the first time + rc->version = now_realtime_sec(); + } + + rrdinstances_create(rc); + netdata_mutex_init(&rc->mutex); + + // signal the react callback to do the job + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_NEW_OBJECT); +} + +static void rrdcontext_delete_callback(const char *id, void *value, void *data) { + (void)id; + RRDHOST *host = (RRDHOST *)data; + (void)host; + + RRDCONTEXT *rc = (RRDCONTEXT *)value; + + rrdinstances_destroy(rc); + netdata_mutex_destroy(&rc->mutex); + rrdcontext_freez(rc); +} + +static void rrdcontext_conflict_callback(const char *id, void *oldv, void *newv, void *data) { + (void)id; + RRDHOST *host = (RRDHOST *)data; + (void)host; + + RRDCONTEXT *rc = (RRDCONTEXT *)oldv; + RRDCONTEXT *rc_new = (RRDCONTEXT *)newv; + + rrdcontext_lock(rc); + + if(rc->title != rc_new->title) { + STRING *old_title = rc->title; + rc->title = string_2way_merge(rc->title, rc_new->title); + string_freez(old_title); + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_TITLE); + } + + if(rc->units != rc_new->units) { + STRING *old_units = rc->units; + rc->units = string_dup(rc_new->units); + string_freez(old_units); + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_UNITS); + } + + if(rc->family != rc_new->family) { + STRING *old_family = rc->family; + rc->family = string_2way_merge(rc->family, rc_new->family); + string_freez(old_family); + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_FAMILY); + } + + if(rc->chart_type != rc_new->chart_type) { + rc->chart_type = rc_new->chart_type; + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_CHART_TYPE); + } + + if(rc->priority != rc_new->priority) { + rc->priority = rc_new->priority; + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_PRIORITY); + } + + rc->flags |= (rc_new->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS); + + if(rrd_flag_is_collected(rc) && rrd_flag_is_archived(rc)) + rrd_flag_set_collected(rc); + + if(rc->flags & RRD_FLAG_UPDATED) + rc->flags |= RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT; + + rrdcontext_unlock(rc); + + // free the resources of the new one + rrdcontext_freez(rc_new); + + // the react callback will continue from here +} + +static void rrdcontext_react_callback(const char *id __maybe_unused, void *value, void *data __maybe_unused) { + RRDCONTEXT *rc = (RRDCONTEXT *)value; + + rrdcontext_trigger_updates(rc, false); +} + +void rrdhost_create_rrdcontexts(RRDHOST *host) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + if(unlikely(!host)) return; + if(likely(host->rrdctx)) return; + + host->rrdctx = (RRDCONTEXTS *)dictionary_create(DICTIONARY_FLAG_DONT_OVERWRITE_VALUE); + dictionary_register_insert_callback((DICTIONARY *)host->rrdctx, rrdcontext_insert_callback, (void *)host); + dictionary_register_delete_callback((DICTIONARY *)host->rrdctx, rrdcontext_delete_callback, (void *)host); + dictionary_register_conflict_callback((DICTIONARY *)host->rrdctx, rrdcontext_conflict_callback, (void *)host); + dictionary_register_react_callback((DICTIONARY *)host->rrdctx, rrdcontext_react_callback, (void *)host); + + host->rrdctx_queue = (RRDCONTEXTS *)dictionary_create(DICTIONARY_FLAG_DONT_OVERWRITE_VALUE | DICTIONARY_FLAG_VALUE_LINK_DONT_CLONE); +} + +void rrdhost_destroy_rrdcontexts(RRDHOST *host) { + if(unlikely(!host)) return; + if(unlikely(!host->rrdctx)) return; + + if(host->rrdctx_queue) { + dictionary_destroy((DICTIONARY *)host->rrdctx_queue); + host->rrdctx_queue = NULL; + } + + dictionary_destroy((DICTIONARY *)host->rrdctx); + host->rrdctx = NULL; +} + +static inline bool rrdcontext_should_be_deleted(RRDCONTEXT *rc) { + if(likely(!(rc->flags & RRD_FLAG_DELETED))) + return false; + + if(likely(!(rc->flags & RRD_FLAG_LIVE_RETENTION))) + return false; + + if(unlikely(rc->flags & RRD_FLAGS_PREVENTING_DELETIONS)) + return false; + + if(unlikely(dictionary_stats_referenced_items(rc->rrdinstances) != 0)) + return false; + + if(unlikely(dictionary_stats_entries(rc->rrdinstances) != 0)) + return false; + + if(unlikely(rc->first_time_t || rc->last_time_t)) + return false; + + return true; +} + +static void rrdcontext_trigger_updates(RRDCONTEXT *rc, bool force) { + if(unlikely(rc->flags & RRD_FLAG_DONT_PROCESS)) return; + if(unlikely(!force && !(rc->flags & RRD_FLAG_UPDATED))) return; + + rrdcontext_lock(rc); + + size_t min_priority = LONG_MAX; + time_t min_first_time_t = LONG_MAX, max_last_time_t = 0; + size_t instances_active = 0, instances_deleted = 0; + bool live_retention = true, currently_collected = false, hidden = true; + { + RRDINSTANCE *ri; + dfe_start_read(rc->rrdinstances, ri) { + if(likely(!(ri->flags & RRD_FLAG_HIDDEN))) + hidden = false; + + if(!(ri->flags & RRD_FLAG_LIVE_RETENTION)) + live_retention = false; + + if (unlikely(rrdinstance_should_be_deleted(ri))) { + instances_deleted++; + rrd_flag_unset_updated(ri); + continue; + } + + if(ri->flags & RRD_FLAG_COLLECTED) + currently_collected = true; + + internal_error(rc->units != ri->units, + "RRDCONTEXT: '%s' rrdinstance '%s' has different units, context '%s', instance '%s'", + string2str(rc->id), string2str(ri->id), + string2str(rc->units), string2str(ri->units)); + + instances_active++; + + if (ri->priority >= RRDCONTEXT_MINIMUM_ALLOWED_PRIORITY && ri->priority < min_priority) + min_priority = ri->priority; + + if (ri->first_time_t && ri->first_time_t < min_first_time_t) + min_first_time_t = ri->first_time_t; + + if (ri->last_time_t && ri->last_time_t > max_last_time_t) + max_last_time_t = ri->last_time_t; + + rrd_flag_unset_updated(ri); + } + dfe_done(ri); + } + + if(hidden && !(rc->flags & RRD_FLAG_HIDDEN)) + rc->flags |= RRD_FLAG_HIDDEN; + else if(!hidden && (rc->flags & RRD_FLAG_HIDDEN)) + rc->flags &= ~RRD_FLAG_HIDDEN; + + if(live_retention && !(rc->flags & RRD_FLAG_LIVE_RETENTION)) + rc->flags |= RRD_FLAG_LIVE_RETENTION; + else if(!live_retention && (rc->flags & RRD_FLAG_LIVE_RETENTION)) + rc->flags &= ~RRD_FLAG_LIVE_RETENTION; + + if(unlikely(!instances_active)) { + // we had some instances, but they are gone now... + + if(rc->first_time_t) { + rc->first_time_t = 0; + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T); + } + + if(rc->last_time_t) { + rc->last_time_t = 0; + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T); + } + + rrd_flag_set_deleted(rc, RRD_FLAG_UPDATE_REASON_ZERO_RETENTION); + } + else { + // we have some active instances... + + if (unlikely(min_first_time_t == LONG_MAX)) + min_first_time_t = 0; + + if (unlikely(min_first_time_t == 0 && max_last_time_t == 0)) { + if(rc->first_time_t) { + rc->first_time_t = 0; + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T); + } + + if(rc->last_time_t) { + rc->last_time_t = 0; + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T); + } + + rrd_flag_set_deleted(rc, RRD_FLAG_UPDATE_REASON_ZERO_RETENTION); + } + else { + rc->flags &= ~RRD_FLAG_UPDATE_REASON_ZERO_RETENTION; + + if (unlikely(rc->first_time_t != min_first_time_t)) { + rc->first_time_t = min_first_time_t; + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T); + } + + if (rc->last_time_t != max_last_time_t) { + rc->last_time_t = max_last_time_t; + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T); + } + + if(likely(currently_collected)) + rrd_flag_set_collected(rc); + else + rrd_flag_set_archived(rc); + } + + if (min_priority != LONG_MAX && rc->priority != min_priority) { + rc->priority = min_priority; + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_PRIORITY); + } + } + + if(unlikely(rc->flags & RRD_FLAG_UPDATED)) { + log_transition(NULL, NULL, rc->id, rc->flags, "RRDCONTEXT"); + + if(check_if_cloud_version_changed_unsafe(rc, false)) { + rc->version = rrdcontext_get_next_version(rc); + + if(rc->flags & RRD_FLAG_QUEUED) { + rc->queue.queued_ut = now_realtime_usec(); + rc->queue.queued_flags |= rc->flags; + } + else { + rc->queue.queued_ut = now_realtime_usec(); + rc->queue.queued_flags = rc->flags; + + rc->flags |= RRD_FLAG_QUEUED; + dictionary_set((DICTIONARY *)rc->rrdhost->rrdctx_queue, string2str(rc->id), rc, sizeof(*rc)); + } + } + + rrd_flag_unset_updated(rc); + } + + rrdcontext_unlock(rc); +} + +// ---------------------------------------------------------------------------- +// public API + +void rrdcontext_updated_rrddim(RRDDIM *rd) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdmetric_from_rrddim(rd); +} + +void rrdcontext_removed_rrddim(RRDDIM *rd) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdmetric_rrddim_is_freed(rd); +} + +void rrdcontext_updated_rrddim_algorithm(RRDDIM *rd) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdmetric_updated_rrddim_flags(rd); +} + +void rrdcontext_updated_rrddim_multiplier(RRDDIM *rd) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdmetric_updated_rrddim_flags(rd); +} + +void rrdcontext_updated_rrddim_divisor(RRDDIM *rd) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdmetric_updated_rrddim_flags(rd); +} + +void rrdcontext_updated_rrddim_flags(RRDDIM *rd) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdmetric_updated_rrddim_flags(rd); +} + +void rrdcontext_collected_rrddim(RRDDIM *rd) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdmetric_collected_rrddim(rd); +} + +void rrdcontext_updated_rrdset(RRDSET *st) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdinstance_from_rrdset(st); +} + +void rrdcontext_removed_rrdset(RRDSET *st) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdinstance_rrdset_is_freed(st); +} + +void rrdcontext_updated_rrdset_name(RRDSET *st) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdinstance_updated_rrdset_name(st); +} + +void rrdcontext_updated_rrdset_flags(RRDSET *st) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdinstance_updated_rrdset_flags(st); +} + +void rrdcontext_collected_rrdset(RRDSET *st) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdinstance_collected_rrdset(st); +} + +void rrdcontext_host_child_connected(RRDHOST *host) { + (void)host; + + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + // no need to do anything here + ; +} + +void rrdcontext_host_child_disconnected(RRDHOST *host) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + rrdcontext_recalculate_host_retention(host, RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD, -1); +} + +// ---------------------------------------------------------------------------- +// ACLK interface + +static bool rrdhost_check_our_claim_id(const char *claim_id) { + if(!localhost->aclk_state.claimed_id) return false; + return (strcasecmp(claim_id, localhost->aclk_state.claimed_id) == 0) ? true : false; +} + +static RRDHOST *rrdhost_find_by_node_id(const char *node_id) { + uuid_t uuid; + if (uuid_parse(node_id, uuid)) + return NULL; + + RRDHOST *host = NULL; + + rrd_rdlock(); + rrdhost_foreach_read(host) { + if(!host->node_id) continue; + + if(uuid_compare(uuid, *host->node_id) == 0) + break; + } + rrd_unlock(); + + return host; +} + +void rrdcontext_hub_checkpoint_command(void *ptr) { + struct ctxs_checkpoint *cmd = ptr; + + if(!rrdhost_check_our_claim_id(cmd->claim_id)) { + error("RRDCONTEXT: received checkpoint command for claim_id '%s', node id '%s', but this is not our claim id. Ours '%s', received '%s'. Ignoring command.", + cmd->claim_id, cmd->node_id, + localhost->aclk_state.claimed_id?localhost->aclk_state.claimed_id:"NOT SET", + cmd->claim_id); + + return; + } + + RRDHOST *host = rrdhost_find_by_node_id(cmd->node_id); + if(!host) { + error("RRDCONTEXT: received checkpoint command for claim id '%s', node id '%s', but there is no node with such node id here. Ignoring command.", + cmd->claim_id, cmd->node_id); + + return; + } + + if(rrdhost_flag_check(host, RRDHOST_FLAG_ACLK_STREAM_CONTEXTS)) { + info("RRDCONTEXT: received checkpoint command for claim id '%s', node id '%s', while node '%s' has an active context streaming.", + cmd->claim_id, cmd->node_id, host->hostname); + + // disable it temporarily, so that our worker will not attempt to send messages in parallel + rrdhost_flag_clear(host, RRDHOST_FLAG_ACLK_STREAM_CONTEXTS); + } + + uint64_t our_version_hash = rrdcontext_version_hash(host); + + if(cmd->version_hash != our_version_hash) { + error("RRDCONTEXT: received version hash %lu for host '%s', does not match our version hash %lu. Sending snapshot of all contexts.", + cmd->version_hash, host->hostname, our_version_hash); + +#ifdef ENABLE_ACLK + // prepare the snapshot + char uuid[UUID_STR_LEN]; + uuid_unparse_lower(*host->node_id, uuid); + contexts_snapshot_t bundle = contexts_snapshot_new(cmd->claim_id, uuid, our_version_hash); + + // do a deep scan on every metric of the host to make sure all our data are updated + rrdcontext_recalculate_host_retention(host, RRD_FLAG_NONE, -1); + + // calculate version hash and pack all the messages together in one go + our_version_hash = rrdcontext_version_hash_with_callback(host, rrdcontext_message_send_unsafe, true, bundle); + + // update the version + contexts_snapshot_set_version(bundle, our_version_hash); + + // send it + aclk_send_contexts_snapshot(bundle); +#endif + } + + internal_error(true, "RRDCONTEXT: host '%s' enabling streaming of contexts", host->hostname); + rrdhost_flag_set(host, RRDHOST_FLAG_ACLK_STREAM_CONTEXTS); + char node_str[UUID_STR_LEN]; + uuid_unparse_lower(*host->node_id, node_str); + log_access("ACLK REQ [%s (%s)]: STREAM CONTEXTS ENABLED", node_str, host->hostname); +} + +void rrdcontext_hub_stop_streaming_command(void *ptr) { + struct stop_streaming_ctxs *cmd = ptr; + + if(!rrdhost_check_our_claim_id(cmd->claim_id)) { + error("RRDCONTEXT: received stop streaming command for claim_id '%s', node id '%s', but this is not our claim id. Ours '%s', received '%s'. Ignoring command.", + cmd->claim_id, cmd->node_id, + localhost->aclk_state.claimed_id?localhost->aclk_state.claimed_id:"NOT SET", + cmd->claim_id); + + return; + } + + RRDHOST *host = rrdhost_find_by_node_id(cmd->node_id); + if(!host) { + error("RRDCONTEXT: received stop streaming command for claim id '%s', node id '%s', but there is no node with such node id here. Ignoring command.", + cmd->claim_id, cmd->node_id); + + return; + } + + if(!rrdhost_flag_check(host, RRDHOST_FLAG_ACLK_STREAM_CONTEXTS)) { + error("RRDCONTEXT: received stop streaming command for claim id '%s', node id '%s', but node '%s' does not have active context streaming. Ignoring command.", + cmd->claim_id, cmd->node_id, host->hostname); + + return; + } + + internal_error(true, "RRDCONTEXT: host '%s' disabling streaming of contexts", host->hostname); + rrdhost_flag_clear(host, RRDHOST_FLAG_ACLK_STREAM_CONTEXTS); +} + +// ---------------------------------------------------------------------------- +// web API + +struct rrdcontext_to_json { + BUFFER *wb; + RRDCONTEXT_TO_JSON_OPTIONS options; + time_t after; + time_t before; + SIMPLE_PATTERN *chart_label_key; + SIMPLE_PATTERN *chart_labels_filter; + SIMPLE_PATTERN *chart_dimensions; + size_t written; + time_t now; + time_t combined_first_time_t; + time_t combined_last_time_t; + RRD_FLAGS combined_flags; +}; + +static inline int rrdmetric_to_json_callback(const char *id, void *value, void *data) { + struct rrdcontext_to_json * t = data; + RRDMETRIC *rm = value; + BUFFER *wb = t->wb; + RRDCONTEXT_TO_JSON_OPTIONS options = t->options; + time_t after = t->after; + time_t before = t->before; + + if((rm->flags & RRD_FLAG_DELETED) && !(options & RRDCONTEXT_OPTION_SHOW_DELETED)) + return 0; + + if(after && (!rm->last_time_t || after > rm->last_time_t)) + return 0; + + if(before && (!rm->first_time_t || before < rm->first_time_t)) + return 0; + + if(t->chart_dimensions + && !simple_pattern_matches(t->chart_dimensions, string2str(rm->id)) + && !simple_pattern_matches(t->chart_dimensions, string2str(rm->name))) + return 0; + + if(t->written) { + buffer_strcat(wb, ",\n"); + t->combined_first_time_t = MIN(t->combined_first_time_t, rm->first_time_t); + t->combined_last_time_t = MAX(t->combined_last_time_t, rm->last_time_t); + t->combined_flags |= rm->flags; + } + else { + buffer_strcat(wb, "\n"); + t->combined_first_time_t = rm->first_time_t; + t->combined_last_time_t = rm->last_time_t; + t->combined_flags = rm->flags; + } + + buffer_sprintf(wb, "\t\t\t\t\t\t\"%s\": {", id); + + if(options & RRDCONTEXT_OPTION_SHOW_UUIDS) { + char uuid[UUID_STR_LEN]; + uuid_unparse(rm->uuid, uuid); + buffer_sprintf(wb, "\n\t\t\t\t\t\t\t\"uuid\":\"%s\",", uuid); + } + + buffer_sprintf(wb, + "\n\t\t\t\t\t\t\t\"name\":\"%s\"" + ",\n\t\t\t\t\t\t\t\"first_time_t\":%ld" + ",\n\t\t\t\t\t\t\t\"last_time_t\":%ld" + ",\n\t\t\t\t\t\t\t\"collected\":%s" + , string2str(rm->name) + , rm->first_time_t + , rrd_flag_is_collected(rm) ? t->now : rm->last_time_t + , rm->flags & RRD_FLAG_COLLECTED ? "true" : "false" + ); + + if(options & RRDCONTEXT_OPTION_SHOW_DELETED) { + buffer_sprintf(wb, + ",\n\t\t\t\t\t\t\t\"deleted\":%s" + , rm->flags & RRD_FLAG_DELETED ? "true" : "false" + ); + } + + if(options & RRDCONTEXT_OPTION_SHOW_FLAGS) { + buffer_strcat(wb, ",\n\t\t\t\t\t\t\t\"flags\":\""); + rrd_flags_to_buffer(rm->flags, wb); + buffer_strcat(wb, "\""); + } + + buffer_strcat(wb, "\n\t\t\t\t\t\t}"); + t->written++; + return 1; +} + +static inline int rrdinstance_to_json_callback(const char *id, void *value, void *data) { + struct rrdcontext_to_json *t_parent = data; + RRDINSTANCE *ri = value; + BUFFER *wb = t_parent->wb; + RRDCONTEXT_TO_JSON_OPTIONS options = t_parent->options; + time_t after = t_parent->after; + time_t before = t_parent->before; + bool has_filter = t_parent->chart_label_key || t_parent->chart_labels_filter || t_parent->chart_dimensions; + + if((ri->flags & RRD_FLAG_DELETED) && !(options & RRDCONTEXT_OPTION_SHOW_DELETED)) + return 0; + + if(after && (!ri->last_time_t || after > ri->last_time_t)) + return 0; + + if(before && (!ri->first_time_t || before < ri->first_time_t)) + return 0; + + if(t_parent->chart_label_key && !rrdlabels_match_simple_pattern_parsed(ri->rrdlabels, t_parent->chart_label_key, '\0')) + return 0; + + if(t_parent->chart_labels_filter && !rrdlabels_match_simple_pattern_parsed(ri->rrdlabels, t_parent->chart_labels_filter, ':')) + return 0; + + time_t first_time_t = ri->first_time_t; + time_t last_time_t = ri->last_time_t; + RRD_FLAGS flags = ri->flags; + + BUFFER *wb_metrics = NULL; + if(options & RRDCONTEXT_OPTION_SHOW_METRICS || t_parent->chart_dimensions) { + + wb_metrics = buffer_create(4096); + + struct rrdcontext_to_json t_metrics = { + .wb = wb_metrics, + .options = options, + .chart_label_key = t_parent->chart_label_key, + .chart_labels_filter = t_parent->chart_labels_filter, + .chart_dimensions = t_parent->chart_dimensions, + .after = after, + .before = before, + .written = 0, + .now = t_parent->now, + }; + dictionary_walkthrough_read(ri->rrdmetrics, rrdmetric_to_json_callback, &t_metrics); + + if(has_filter && !t_metrics.written) { + buffer_free(wb_metrics); + return 0; + } + + first_time_t = t_metrics.combined_first_time_t; + last_time_t = t_metrics.combined_last_time_t; + flags = t_metrics.combined_flags; + } + + if(t_parent->written) { + buffer_strcat(wb, ",\n"); + t_parent->combined_first_time_t = MIN(t_parent->combined_first_time_t, first_time_t); + t_parent->combined_last_time_t = MAX(t_parent->combined_last_time_t, last_time_t); + t_parent->combined_flags |= flags; + } + else { + buffer_strcat(wb, "\n"); + t_parent->combined_first_time_t = first_time_t; + t_parent->combined_last_time_t = last_time_t; + t_parent->combined_flags = flags; + } + + buffer_sprintf(wb, "\t\t\t\t\"%s\": {", id); + + if(options & RRDCONTEXT_OPTION_SHOW_UUIDS) { + char uuid[UUID_STR_LEN]; + uuid_unparse(ri->uuid, uuid); + buffer_sprintf(wb,"\n\t\t\t\t\t\"uuid\":\"%s\",", uuid); + } + + buffer_sprintf(wb, + "\n\t\t\t\t\t\"name\":\"%s\"" + ",\n\t\t\t\t\t\"context\":\"%s\"" + ",\n\t\t\t\t\t\"title\":\"%s\"" + ",\n\t\t\t\t\t\"units\":\"%s\"" + ",\n\t\t\t\t\t\"family\":\"%s\"" + ",\n\t\t\t\t\t\"chart_type\":\"%s\"" + ",\n\t\t\t\t\t\"priority\":%u" + ",\n\t\t\t\t\t\"update_every\":%d" + ",\n\t\t\t\t\t\"first_time_t\":%ld" + ",\n\t\t\t\t\t\"last_time_t\":%ld" + ",\n\t\t\t\t\t\"collected\":%s" + , string2str(ri->name) + , string2str(ri->rc->id) + , string2str(ri->title) + , string2str(ri->units) + , string2str(ri->family) + , rrdset_type_name(ri->chart_type) + , ri->priority + , ri->update_every + , first_time_t + , (flags & RRD_FLAG_COLLECTED) ? t_parent->now : last_time_t + , (flags & RRD_FLAG_COLLECTED) ? "true" : "false" + ); + + if(options & RRDCONTEXT_OPTION_SHOW_DELETED) { + buffer_sprintf(wb, + ",\n\t\t\t\t\t\"deleted\":%s" + , (ri->flags & RRD_FLAG_DELETED) ? "true" : "false" + ); + } + + if(options & RRDCONTEXT_OPTION_SHOW_FLAGS) { + buffer_strcat(wb, ",\n\t\t\t\t\t\"flags\":\""); + rrd_flags_to_buffer(ri->flags, wb); + buffer_strcat(wb, "\""); + } + + if(options & RRDCONTEXT_OPTION_SHOW_LABELS && ri->rrdlabels && dictionary_stats_entries(ri->rrdlabels)) { + buffer_sprintf(wb, ",\n\t\t\t\t\t\"labels\": {\n"); + rrdlabels_to_buffer(ri->rrdlabels, wb, "\t\t\t\t\t\t", ":", "\"", ",\n", NULL, NULL, NULL, NULL); + buffer_strcat(wb, "\n\t\t\t\t\t}"); + } + + if(wb_metrics) { + buffer_sprintf(wb, ",\n\t\t\t\t\t\"dimensions\": {"); + buffer_fast_strcat(wb, buffer_tostring(wb_metrics), buffer_strlen(wb_metrics)); + buffer_strcat(wb, "\n\t\t\t\t\t}"); + + buffer_free(wb_metrics); + } + + buffer_strcat(wb, "\n\t\t\t\t}"); + t_parent->written++; + return 1; +} + +static inline int rrdcontext_to_json_callback(const char *id, void *value, void *data) { + struct rrdcontext_to_json *t_parent = data; + RRDCONTEXT *rc = value; + BUFFER *wb = t_parent->wb; + RRDCONTEXT_TO_JSON_OPTIONS options = t_parent->options; + time_t after = t_parent->after; + time_t before = t_parent->before; + bool has_filter = t_parent->chart_label_key || t_parent->chart_labels_filter || t_parent->chart_dimensions; + + if(unlikely((rc->flags & RRD_FLAG_HIDDEN) && !(options & RRDCONTEXT_OPTION_SHOW_HIDDEN))) + return 0; + + if((rc->flags & RRD_FLAG_DELETED) && !(options & RRDCONTEXT_OPTION_SHOW_DELETED)) + return 0; + + if(options & RRDCONTEXT_OPTION_DEEPSCAN) + rrdcontext_recalculate_context_retention(rc, RRD_FLAG_NONE, -1); + + if(after && (!rc->last_time_t || after > rc->last_time_t)) + return 0; + + if(before && (!rc->first_time_t || before < rc->first_time_t)) + return 0; + + time_t first_time_t = rc->first_time_t; + time_t last_time_t = rc->last_time_t; + RRD_FLAGS flags = rc->flags; + + BUFFER *wb_instances = NULL; + if((options & (RRDCONTEXT_OPTION_SHOW_LABELS|RRDCONTEXT_OPTION_SHOW_INSTANCES|RRDCONTEXT_OPTION_SHOW_METRICS)) + || t_parent->chart_label_key + || t_parent->chart_labels_filter + || t_parent->chart_dimensions) { + + wb_instances = buffer_create(4096); + + struct rrdcontext_to_json t_instances = { + .wb = wb_instances, + .options = options, + .chart_label_key = t_parent->chart_label_key, + .chart_labels_filter = t_parent->chart_labels_filter, + .chart_dimensions = t_parent->chart_dimensions, + .after = after, + .before = before, + .written = 0, + .now = t_parent->now, + }; + dictionary_walkthrough_read(rc->rrdinstances, rrdinstance_to_json_callback, &t_instances); + + if(has_filter && !t_instances.written) { + buffer_free(wb_instances); + return 0; + } + + first_time_t = t_instances.combined_first_time_t; + last_time_t = t_instances.combined_last_time_t; + flags = t_instances.combined_flags; + } + + if(t_parent->written) + buffer_strcat(wb, ",\n"); + else + buffer_strcat(wb, "\n"); + + if(options & RRDCONTEXT_OPTION_SKIP_ID) + buffer_sprintf(wb, "\t\t\{"); + else + buffer_sprintf(wb, "\t\t\"%s\": {", id); + + rrdcontext_lock(rc); + + buffer_sprintf(wb, + "\n\t\t\t\"title\":\"%s\"" + ",\n\t\t\t\"units\":\"%s\"" + ",\n\t\t\t\"family\":\"%s\"" + ",\n\t\t\t\"chart_type\":\"%s\"" + ",\n\t\t\t\"priority\":%u" + ",\n\t\t\t\"first_time_t\":%ld" + ",\n\t\t\t\"last_time_t\":%ld" + ",\n\t\t\t\"collected\":%s" + , string2str(rc->title) + , string2str(rc->units) + , string2str(rc->family) + , rrdset_type_name(rc->chart_type) + , rc->priority + , first_time_t + , (flags & RRD_FLAG_COLLECTED) ? t_parent->now : last_time_t + , (flags & RRD_FLAG_COLLECTED) ? "true" : "false" + ); + + if(options & RRDCONTEXT_OPTION_SHOW_DELETED) { + buffer_sprintf(wb, + ",\n\t\t\t\"deleted\":%s" + , (rc->flags & RRD_FLAG_DELETED) ? "true" : "false" + ); + } + + if(options & RRDCONTEXT_OPTION_SHOW_FLAGS) { + buffer_strcat(wb, ",\n\t\t\t\"flags\":\""); + rrd_flags_to_buffer(rc->flags, wb); + buffer_strcat(wb, "\""); + } + + if(options & RRDCONTEXT_OPTION_SHOW_QUEUED) { + buffer_strcat(wb, ",\n\t\t\t\"queued_reasons\":\""); + rrd_reasons_to_buffer(rc->queue.queued_flags, wb); + buffer_strcat(wb, "\""); + + buffer_sprintf(wb, + ",\n\t\t\t\"last_queued\":%llu" + ",\n\t\t\t\"scheduled_dispatch\":%llu" + ",\n\t\t\t\"last_dequeued\":%llu" + ",\n\t\t\t\"hub_version\":%lu" + ",\n\t\t\t\"version\":%lu" + , rc->queue.queued_ut / USEC_PER_SEC + , rc->queue.scheduled_dispatch_ut / USEC_PER_SEC + , rc->queue.dequeued_ut / USEC_PER_SEC + , rc->hub.version + , rc->version + ); + } + + rrdcontext_unlock(rc); + + if(wb_instances) { + buffer_sprintf(wb, ",\n\t\t\t\"charts\": {"); + buffer_fast_strcat(wb, buffer_tostring(wb_instances), buffer_strlen(wb_instances)); + buffer_strcat(wb, "\n\t\t\t}"); + + buffer_free(wb_instances); + } + + buffer_strcat(wb, "\n\t\t}"); + t_parent->written++; + return 1; +} + +int rrdcontext_to_json(RRDHOST *host, BUFFER *wb, time_t after, time_t before, RRDCONTEXT_TO_JSON_OPTIONS options, const char *context, SIMPLE_PATTERN *chart_label_key, SIMPLE_PATTERN *chart_labels_filter, SIMPLE_PATTERN *chart_dimensions) { + RRDCONTEXT_ACQUIRED *rca = (RRDCONTEXT_ACQUIRED *)dictionary_get_and_acquire_item((DICTIONARY *)host->rrdctx, context); + if(!rca) return HTTP_RESP_NOT_FOUND; + + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + + if(after != 0 && before != 0) { + long long after_wanted = after; + long long before_wanted = before; + rrdr_relative_window_to_absolute(&after_wanted, &before_wanted); + after = after_wanted; + before = before_wanted; + } + + struct rrdcontext_to_json t_contexts = { + .wb = wb, + .options = options|RRDCONTEXT_OPTION_SKIP_ID, + .chart_label_key = chart_label_key, + .chart_labels_filter = chart_labels_filter, + .chart_dimensions = chart_dimensions, + .after = after, + .before = before, + .written = 0, + .now = now_realtime_sec(), + }; + rrdcontext_to_json_callback(context, rc, &t_contexts); + + rrdcontext_release(rca); + + if(!t_contexts.written) + return HTTP_RESP_NOT_FOUND; + + return HTTP_RESP_OK; +} + +int rrdcontexts_to_json(RRDHOST *host, BUFFER *wb, time_t after, time_t before, RRDCONTEXT_TO_JSON_OPTIONS options, SIMPLE_PATTERN *chart_label_key, SIMPLE_PATTERN *chart_labels_filter, SIMPLE_PATTERN *chart_dimensions) { + char node_uuid[UUID_STR_LEN] = ""; + + if(host->node_id) + uuid_unparse(*host->node_id, node_uuid); + + if(after != 0 && before != 0) { + long long after_wanted = after; + long long before_wanted = before; + rrdr_relative_window_to_absolute(&after_wanted, &before_wanted); + after = after_wanted; + before = before_wanted; + } + + buffer_sprintf(wb, "{\n" + "\t\"hostname\": \"%s\"" + ",\n\t\"machine_guid\": \"%s\"" + ",\n\t\"node_id\": \"%s\"" + ",\n\t\"claim_id\": \"%s\"" + , host->hostname + , host->machine_guid + , node_uuid + , host->aclk_state.claimed_id ? host->aclk_state.claimed_id : "" + ); + + if(options & RRDCONTEXT_OPTION_SHOW_LABELS) { + buffer_sprintf(wb, ",\n\t\"host_labels\": {\n"); + rrdlabels_to_buffer(host->host_labels, wb, "\t\t", ":", "\"", ",\n", NULL, NULL, NULL, NULL); + buffer_strcat(wb, "\n\t}"); + } + + buffer_sprintf(wb, ",\n\t\"contexts\": {"); + struct rrdcontext_to_json t_contexts = { + .wb = wb, + .options = options, + .chart_label_key = chart_label_key, + .chart_labels_filter = chart_labels_filter, + .chart_dimensions = chart_dimensions, + .after = after, + .before = before, + .written = 0, + .now = now_realtime_sec(), + }; + dictionary_walkthrough_read((DICTIONARY *)host->rrdctx, rrdcontext_to_json_callback, &t_contexts); + + // close contexts, close main + buffer_strcat(wb, "\n\t}\n}"); + + return HTTP_RESP_OK; +} + +// ---------------------------------------------------------------------------- +// load from SQL + +static void rrdinstance_load_clabel(SQL_CLABEL_DATA *sld, void *data) { + RRDINSTANCE *ri = data; + rrdlabels_add(ri->rrdlabels, sld->label_key, sld->label_value, sld->label_source); +} + +static void rrdinstance_load_dimension(SQL_DIMENSION_DATA *sd, void *data) { + RRDINSTANCE *ri = data; + + RRDMETRIC trm = { + .id = string_strdupz(sd->id), + .name = string_strdupz(sd->name), + .flags = RRD_FLAG_ARCHIVED | RRD_FLAG_UPDATE_REASON_LOAD_SQL, + }; + uuid_copy(trm.uuid, sd->dim_id); + + dictionary_set(ri->rrdmetrics, string2str(trm.id), &trm, sizeof(trm)); +} + +static void rrdinstance_load_chart_callback(SQL_CHART_DATA *sc, void *data) { + RRDHOST *host = data; + + RRDCONTEXT tc = { + .id = string_strdupz(sc->context), + .title = string_strdupz(sc->title), + .units = string_strdupz(sc->units), + .family = string_strdupz(sc->family), + .priority = sc->priority, + .chart_type = sc->chart_type, + .flags = RRD_FLAG_ARCHIVED | RRD_FLAG_DONT_PROCESS | RRD_FLAG_UPDATE_REASON_LOAD_SQL, + .rrdhost = host, + }; + + RRDCONTEXT_ACQUIRED *rca = (RRDCONTEXT_ACQUIRED *)dictionary_set_and_acquire_item((DICTIONARY *)host->rrdctx, string2str(tc.id), &tc, sizeof(tc)); + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + + RRDINSTANCE tri = { + .id = string_strdupz(sc->id), + .name = string_strdupz(sc->name), + .title = string_strdupz(sc->title), + .units = string_strdupz(sc->units), + .family = string_strdupz(sc->family), + .chart_type = sc->chart_type, + .priority = sc->priority, + .update_every = sc->update_every, + .flags = RRD_FLAG_ARCHIVED | RRD_FLAG_DONT_PROCESS | RRD_FLAG_UPDATE_REASON_LOAD_SQL, + }; + uuid_copy(tri.uuid, sc->chart_id); + + RRDINSTANCE_ACQUIRED *ria = (RRDINSTANCE_ACQUIRED *)dictionary_set_and_acquire_item(rc->rrdinstances, sc->id, &tri, sizeof(tri)); + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + + ctx_get_dimension_list(&ri->uuid, rrdinstance_load_dimension, ri); + ctx_get_label_list(&ri->uuid, rrdinstance_load_clabel, ri); + ri->flags &= ~RRD_FLAG_DONT_PROCESS; + rrdinstance_trigger_updates(ri, true, true); + + // let the instance be in "don't process" mode + // so that we process it once, when it is collected + ri->flags |= RRD_FLAG_DONT_PROCESS; + + rrdinstance_release(ria); + rrdcontext_release(rca); +} + +static void rrdcontext_load_context_callback(VERSIONED_CONTEXT_DATA *ctx_data, void *data) { + RRDHOST *host = data; + (void)host; + + RRDCONTEXT trc = { + .id = string_strdupz(ctx_data->id), + .flags = RRD_FLAG_ARCHIVED | RRD_FLAG_DONT_PROCESS | RRD_FLAG_UPDATE_REASON_LOAD_SQL, + + // no need to set more data here + // we only need the hub data + + .hub = *ctx_data, + }; + dictionary_set((DICTIONARY *)host->rrdctx, string2str(trc.id), &trc, sizeof(trc)); +} + +void rrdhost_load_rrdcontext_data(RRDHOST *host) { + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + return; + + if(host->rrdctx) return; + + rrdhost_create_rrdcontexts(host); + ctx_get_context_list(&host->host_uuid, rrdcontext_load_context_callback, host); + ctx_get_chart_list(&host->host_uuid, rrdinstance_load_chart_callback, host); + + RRDCONTEXT *rc; + dfe_start_read((DICTIONARY *)host->rrdctx, rc) { + rc->flags &= ~RRD_FLAG_DONT_PROCESS; + rrdcontext_trigger_updates(rc, true); + } + dfe_done(rc); +} + +// ---------------------------------------------------------------------------- +// the worker thread + +static inline usec_t rrdcontext_calculate_queued_dispatch_time_ut(RRDCONTEXT *rc, usec_t now_ut) { + + if(likely(rc->queue.delay_calc_ut >= rc->queue.queued_ut)) + return rc->queue.scheduled_dispatch_ut; + + RRD_FLAGS flags = rc->queue.queued_flags; + + usec_t delay = LONG_MAX; + int i; + struct rrdcontext_reason *reason; + for(i = 0, reason = &rrdcontext_reasons[i]; reason->name ; reason = &rrdcontext_reasons[++i]) { + if(unlikely(flags & reason->flag)) { + if(reason->delay_ut < delay) + delay = reason->delay_ut; + } + } + + if(unlikely(delay == LONG_MAX)) { + internal_error(true, "RRDCONTEXT: '%s', cannot find minimum delay of flags %x", string2str(rc->id), (unsigned int)flags); + delay = 60 * USEC_PER_SEC; + } + + rc->queue.delay_calc_ut = now_ut; + usec_t dispatch_ut = rc->queue.scheduled_dispatch_ut = rc->queue.queued_ut + delay; + return dispatch_ut; +} + +#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 + +static usec_t rrdcontext_next_db_rotation_ut = 0; +void rrdcontext_db_rotation(void) { + // called when the db rotates its database + rrdcontext_next_db_rotation_ut = now_realtime_usec() + FULL_RETENTION_SCAN_DELAY_AFTER_DB_ROTATION_SECS * USEC_PER_SEC; +} + +static uint64_t rrdcontext_version_hash_with_callback( + RRDHOST *host, + void (*callback)(RRDCONTEXT *, bool, void *), + bool snapshot, + void *bundle) { + + if(unlikely(!host || !host->rrdctx)) return 0; + + RRDCONTEXT *rc; + uint64_t hash = 0; + + // loop through all contexts of the host + dfe_start_read((DICTIONARY *)host->rrdctx, rc) { + + rrdcontext_lock(rc); + + if(unlikely(rc->flags & RRD_FLAG_HIDDEN)) { + rrdcontext_unlock(rc); + continue; + } + + if(unlikely(callback)) + callback(rc, snapshot, bundle); + + // skip any deleted contexts + if(unlikely(rc->flags & RRD_FLAG_DELETED)) { + rrdcontext_unlock(rc); + continue; + } + + // we use rc->hub.* which has the latest + // metadata we have sent to the hub + + // if a context is currently queued, rc->hub.* does NOT + // reflect the queued changes. rc->hub.* is updated with + // their metadata, after messages are dispatched to hub. + + // when the context is being collected, + // rc->hub.last_time_t is already zero + + hash += rc->hub.version + rc->hub.last_time_t - rc->hub.first_time_t; + + rrdcontext_unlock(rc); + + } + dfe_done(rc); + + return hash; +} + +static void rrdcontext_recalculate_context_retention(RRDCONTEXT *rc, RRD_FLAGS reason, int job_id) { + RRDINSTANCE *ri; + dfe_start_read(rc->rrdinstances, ri) { + RRDMETRIC *rm; + dfe_start_read(ri->rrdmetrics, rm) { + + if(job_id >= 0) + worker_is_busy(job_id); + + rrd_flag_set_updated(rm, reason); + + rm->flags &= ~RRD_FLAG_DONT_PROCESS; + rrdmetric_trigger_updates(rm, true, false); + } + dfe_done(rm); + + ri->flags &= ~RRD_FLAG_DONT_PROCESS; + rrdinstance_trigger_updates(ri, true, false); + ri->flags |= RRD_FLAG_DONT_PROCESS; + } + dfe_done(ri); + + rc->flags &= ~RRD_FLAG_DONT_PROCESS; + rrdcontext_trigger_updates(rc, true); +} + +static void rrdcontext_recalculate_host_retention(RRDHOST *host, RRD_FLAGS reason, int job_id) { + if(unlikely(!host || !host->rrdctx)) return; + + RRDCONTEXT *rc; + dfe_start_read((DICTIONARY *)host->rrdctx, rc) { + rrdcontext_recalculate_context_retention(rc, reason, job_id); + } + dfe_done(rc); +} + +static void rrdcontext_recalculate_retention(int job_id) { + rrdcontext_next_db_rotation_ut = 0; + rrd_rdlock(); + RRDHOST *host; + rrdhost_foreach_read(host) { + rrdcontext_recalculate_host_retention(host, RRD_FLAG_UPDATE_REASON_DB_ROTATION, job_id); + } + rrd_unlock(); +} + +void rrdcontext_delete_from_sql_unsafe(RRDCONTEXT *rc) { + // we need to refresh the string pointers in rc->hub + // in case the context changed values + rc->hub.id = string2str(rc->id); + rc->hub.title = string2str(rc->title); + rc->hub.units = string2str(rc->units); + rc->hub.family = string2str(rc->family); + + // delete it from SQL + if(ctx_delete_context(&rc->rrdhost->host_uuid, &rc->hub) != 0) + error("RRDCONTEXT: failed to delete context '%s' version %lu from SQL.", rc->hub.id, rc->hub.version); +} + +static void rrdcontext_garbage_collect(void) { + rrd_rdlock(); + RRDHOST *host; + rrdhost_foreach_read(host) { + RRDCONTEXT *rc; + dfe_start_write((DICTIONARY *)host->rrdctx, rc) { + worker_is_busy(WORKER_JOB_CLEANUP); + + rrdcontext_lock(rc); + + if(unlikely(rrdcontext_should_be_deleted(rc))) { + worker_is_busy(WORKER_JOB_CLEANUP_DELETE); + rrdcontext_delete_from_sql_unsafe(rc); + + if(dictionary_del_having_write_lock((DICTIONARY *)host->rrdctx, string2str(rc->id)) != 0) + error("RRDCONTEXT: '%s' of host '%s' failed to be deleted from rrdcontext dictionary.", + string2str(rc->id), host->hostname); + } + else { + RRDINSTANCE *ri; + dfe_start_write(rc->rrdinstances, ri) { + if(rrdinstance_should_be_deleted(ri)) { + worker_is_busy(WORKER_JOB_CLEANUP_DELETE); + dictionary_del_having_write_lock(rc->rrdinstances, string2str(ri->id)); + } + else { + RRDMETRIC *rm; + dfe_start_write(ri->rrdmetrics, rm) { + if(rrdmetric_should_be_deleted(rm)) { + worker_is_busy(WORKER_JOB_CLEANUP_DELETE); + dictionary_del_having_write_lock(ri->rrdmetrics, string2str(rm->id)); + } + } + dfe_done(rm); + } + } + dfe_done(ri); + } + + // the item is referenced in the dictionary + // so, it is still here to unlock, even if we have deleted it + rrdcontext_unlock(rc); + } + dfe_done(rc); + } + rrd_unlock(); +} + +static void rrdcontext_main_cleanup(void *ptr) { + struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr; + static_thread->enabled = NETDATA_MAIN_THREAD_EXITING; + // custom code + static_thread->enabled = NETDATA_MAIN_THREAD_EXITED; +} + +void *rrdcontext_main(void *ptr) { + netdata_thread_cleanup_push(rrdcontext_main_cleanup, ptr); + + if(unlikely(rrdcontext_enabled == CONFIG_BOOLEAN_NO)) + goto exit; + + worker_register("RRDCONTEXT"); + worker_register_job_name(WORKER_JOB_HOSTS, "hosts"); + worker_register_job_name(WORKER_JOB_CHECK, "dedup checks"); + worker_register_job_name(WORKER_JOB_SEND, "sent contexts"); + worker_register_job_name(WORKER_JOB_DEQUEUE, "deduped contexts"); + worker_register_job_name(WORKER_JOB_RETENTION, "metrics retention"); + worker_register_job_name(WORKER_JOB_QUEUED, "queued contexts"); + worker_register_job_name(WORKER_JOB_CLEANUP, "cleanups"); + worker_register_job_name(WORKER_JOB_CLEANUP_DELETE, "deletes"); + + heartbeat_t hb; + heartbeat_init(&hb); + usec_t step = USEC_PER_SEC * RRDCONTEXT_WORKER_THREAD_HEARTBEAT_SECS; + + while (!netdata_exit) { + worker_is_idle(); + heartbeat_next(&hb, step); + + if(unlikely(netdata_exit)) break; + + if(!aclk_connected) continue; + + usec_t now_ut = now_realtime_usec(); + + if(rrdcontext_next_db_rotation_ut && now_ut > rrdcontext_next_db_rotation_ut) { + rrdcontext_recalculate_retention(WORKER_JOB_RETENTION); + rrdcontext_garbage_collect(); + rrdcontext_next_db_rotation_ut = 0; + } + + rrd_rdlock(); + RRDHOST *host; + rrdhost_foreach_read(host) { + if(unlikely(netdata_exit)) break; + + worker_is_busy(WORKER_JOB_HOSTS); + + // check if we have received a streaming command for this host + if(!rrdhost_flag_check(host, RRDHOST_FLAG_ACLK_STREAM_CONTEXTS)) + continue; + + // check if there are queued items to send + if(!dictionary_stats_entries((DICTIONARY *)host->rrdctx_queue)) + continue; + + if(!host->node_id) + continue; + + size_t messages_added = 0; + contexts_updated_t bundle = NULL; + + RRDCONTEXT *rc; + dfe_start_write((DICTIONARY *)host->rrdctx_queue, rc) { + if(unlikely(netdata_exit)) break; + + if(unlikely(messages_added >= MESSAGES_PER_BUNDLE_TO_SEND_TO_HUB_PER_HOST)) + break; + + worker_is_busy(WORKER_JOB_QUEUED); + usec_t dispatch_ut = rrdcontext_calculate_queued_dispatch_time_ut(rc, now_ut); + char *claim_id = get_agent_claimid(); + if(unlikely(now_ut >= dispatch_ut) && claim_id) { + worker_is_busy(WORKER_JOB_CHECK); + + rrdcontext_lock(rc); + + if(check_if_cloud_version_changed_unsafe(rc, true)) { + worker_is_busy(WORKER_JOB_SEND); + +#ifdef ENABLE_ACLK + if(!bundle) { + // prepare the bundle to send the messages + char uuid[UUID_STR_LEN]; + uuid_unparse_lower(*host->node_id, uuid); + + bundle = contexts_updated_new(claim_id, uuid, 0, now_ut); + } +#endif + // update the hub data of the context, give a new version, pack the message + // and save an update to SQL + rrdcontext_message_send_unsafe(rc, false, bundle); + messages_added++; + + rc->queue.dequeued_ut = now_ut; + } + else + rc->version = rc->hub.version; + + // remove the queued flag, so that it can be queued again + rc->flags &= ~RRD_FLAG_QUEUED; + + // remove it from the queue + worker_is_busy(WORKER_JOB_DEQUEUE); + dictionary_del_having_write_lock((DICTIONARY *)host->rrdctx_queue, string2str(rc->id)); + + if(unlikely(rrdcontext_should_be_deleted(rc))) { + // this is a deleted context - delete it forever... + + worker_is_busy(WORKER_JOB_CLEANUP_DELETE); + rrdcontext_delete_from_sql_unsafe(rc); + + STRING *id = string_dup(rc->id); + rrdcontext_unlock(rc); + + // delete it from the master dictionary + if(dictionary_del((DICTIONARY *)host->rrdctx, string2str(rc->id)) != 0) + error("RRDCONTEXT: '%s' of host '%s' failed to be deleted from rrdcontext dictionary.", + string2str(id), host->hostname); + + string_freez(id); + } + else + rrdcontext_unlock(rc); + } + freez(claim_id); + } + dfe_done(rc); + +#ifdef ENABLE_ACLK + if(!netdata_exit && bundle) { + // we have a bundle to send messages + + // update the version hash + contexts_updated_update_version_hash(bundle, rrdcontext_version_hash(host)); + + // send it + aclk_send_contexts_updated(bundle); + } + else if(bundle) + contexts_updated_delete(bundle); +#endif + } + rrd_unlock(); + + } + +exit: + netdata_thread_cleanup_pop(1); + return NULL; +} |