diff options
Diffstat (limited to 'database/rrdcontext.c')
| -rw-r--r-- | database/rrdcontext.c | 3937 |
1 files changed, 3937 insertions, 0 deletions
diff --git a/database/rrdcontext.c b/database/rrdcontext.c new file mode 100644 index 0000000..3413d1e --- /dev/null +++ b/database/rrdcontext.c @@ -0,0 +1,3937 @@ +// 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.h" +#include "storage_engine.h" + +#define MESSAGES_PER_BUNDLE_TO_SEND_TO_HUB_PER_HOST 5000 +#define FULL_RETENTION_SCAN_DELAY_AFTER_DB_ROTATION_SECS 120 +#define RRDCONTEXT_WORKER_THREAD_HEARTBEAT_USEC (1000 * USEC_PER_MS) +#define RRDCONTEXT_MINIMUM_ALLOWED_PRIORITY 10 + +#define LOG_TRANSITIONS false + +#define WORKER_JOB_HOSTS 1 +#define WORKER_JOB_CHECK 2 +#define WORKER_JOB_SEND 3 +#define WORKER_JOB_DEQUEUE 4 +#define WORKER_JOB_RETENTION 5 +#define WORKER_JOB_QUEUED 6 +#define WORKER_JOB_CLEANUP 7 +#define WORKER_JOB_CLEANUP_DELETE 8 +#define WORKER_JOB_PP_METRIC 9 // post-processing metrics +#define WORKER_JOB_PP_INSTANCE 10 // post-processing instances +#define WORKER_JOB_PP_CONTEXT 11 // post-processing contexts +#define WORKER_JOB_HUB_QUEUE_SIZE 12 +#define WORKER_JOB_PP_QUEUE_SIZE 13 + + +typedef enum __attribute__ ((__packed__)) { + RRD_FLAG_NONE = 0, + RRD_FLAG_DELETED = (1 << 0), // this is a deleted object (metrics, instances, contexts) + RRD_FLAG_COLLECTED = (1 << 1), // this object is currently being collected + RRD_FLAG_UPDATED = (1 << 2), // this object has updates to propagate + RRD_FLAG_ARCHIVED = (1 << 3), // this object is not currently being collected + RRD_FLAG_OWN_LABELS = (1 << 4), // this instance has its own labels - not linked to an RRDSET + RRD_FLAG_LIVE_RETENTION = (1 << 5), // we have got live retention from the database + RRD_FLAG_QUEUED_FOR_HUB = (1 << 6), // this context is currently queued to be dispatched to hub + RRD_FLAG_QUEUED_FOR_PP = (1 << 7), // this context is currently queued to be post-processed + RRD_FLAG_HIDDEN = (1 << 8), // don't expose this to the hub or the API + + RRD_FLAG_UPDATE_REASON_TRIGGERED = (1 << 9), // the update was triggered by the child object + RRD_FLAG_UPDATE_REASON_LOAD_SQL = (1 << 10), // this object has just been loaded from SQL + RRD_FLAG_UPDATE_REASON_NEW_OBJECT = (1 << 11), // this object has just been created + RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT = (1 << 12), // we received an update on this object + RRD_FLAG_UPDATE_REASON_CHANGED_LINKING = (1 << 13), // an instance or a metric switched RRDSET or RRDDIM + RRD_FLAG_UPDATE_REASON_CHANGED_METADATA = (1 << 14), // this context or instance changed uuid, name, units, title, family, chart type, priority, update every, rrd changed flags + RRD_FLAG_UPDATE_REASON_ZERO_RETENTION = (1 << 15), // this object has no retention + RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T = (1 << 16), // this object changed its oldest time in the db + RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T = (1 << 17), // this object change its latest time in the db + RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED = (1 << 18), // this object has stopped being collected + RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED = (1 << 19), // this object has started being collected + RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD = (1 << 20), // this context belongs to a host that just disconnected + RRD_FLAG_UPDATE_REASON_UNUSED = (1 << 21), // this context is not used anymore + RRD_FLAG_UPDATE_REASON_DB_ROTATION = (1 << 22), // this context changed because of a db rotation + + // action to perform on an object + RRD_FLAG_UPDATE_REASON_UPDATE_RETENTION = (1 << 30), // this object has to update its retention from the db +} RRD_FLAGS; + +#define RRD_FLAG_ALL_UPDATE_REASONS ( \ + RRD_FLAG_UPDATE_REASON_TRIGGERED \ + |RRD_FLAG_UPDATE_REASON_LOAD_SQL \ + |RRD_FLAG_UPDATE_REASON_NEW_OBJECT \ + |RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT \ + |RRD_FLAG_UPDATE_REASON_CHANGED_LINKING \ + |RRD_FLAG_UPDATE_REASON_CHANGED_METADATA \ + |RRD_FLAG_UPDATE_REASON_ZERO_RETENTION \ + |RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T \ + |RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T \ + |RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED \ + |RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED \ + |RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD \ + |RRD_FLAG_UPDATE_REASON_DB_ROTATION \ + |RRD_FLAG_UPDATE_REASON_UNUSED \ + ) + +#define RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS ( \ + RRD_FLAG_ARCHIVED \ + |RRD_FLAG_HIDDEN \ + |RRD_FLAG_ALL_UPDATE_REASONS \ + ) + +#define RRD_FLAGS_REQUIRED_FOR_DELETIONS ( \ + RRD_FLAG_DELETED \ + |RRD_FLAG_LIVE_RETENTION \ +) + +#define RRD_FLAGS_PREVENTING_DELETIONS ( \ + RRD_FLAG_QUEUED_FOR_HUB \ + |RRD_FLAG_COLLECTED \ + |RRD_FLAG_QUEUED_FOR_PP \ +) + +// get all the flags of an object +#define rrd_flags_get(obj) __atomic_load_n(&((obj)->flags), __ATOMIC_SEQ_CST) + +// check if ANY of the given flags (bits) is set +#define rrd_flag_check(obj, flag) (rrd_flags_get(obj) & (flag)) + +// check if ALL the given flags (bits) are set +#define rrd_flag_check_all(obj, flag) (rrd_flag_check(obj, flag) == (flag)) + +// set one or more flags (bits) +#define rrd_flag_set(obj, flag) __atomic_or_fetch(&((obj)->flags), flag, __ATOMIC_SEQ_CST) + +// clear one or more flags (bits) +#define rrd_flag_clear(obj, flag) __atomic_and_fetch(&((obj)->flags), ~(flag), __ATOMIC_SEQ_CST) + +// replace the flags of an object, with the supplied ones +#define rrd_flags_replace(obj, all_flags) __atomic_store_n(&((obj)->flags), all_flags, __ATOMIC_SEQ_CST) + +static inline void +rrd_flag_add_remove_atomic(RRD_FLAGS *flags, RRD_FLAGS check, RRD_FLAGS conditionally_add, RRD_FLAGS always_remove) { + RRD_FLAGS expected, desired; + + do { + expected = *flags; + + desired = expected; + desired &= ~(always_remove); + + if(!(expected & check)) + desired |= (check | conditionally_add); + + } while(!__atomic_compare_exchange_n(flags, &expected, desired, false, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)); +} + +#define rrd_flag_set_collected(obj) \ + rrd_flag_add_remove_atomic(&((obj)->flags) \ + /* check this flag */ \ + , RRD_FLAG_COLLECTED \ + \ + /* add these flags together with the above, if the above is not already set */ \ + , RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED | RRD_FLAG_UPDATED \ + \ + /* always remove these flags */ \ + , RRD_FLAG_ARCHIVED \ + | RRD_FLAG_DELETED \ + | RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED \ + | RRD_FLAG_UPDATE_REASON_ZERO_RETENTION \ + | RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD \ + ) + +#define rrd_flag_set_archived(obj) \ + rrd_flag_add_remove_atomic(&((obj)->flags) \ + /* check this flag */ \ + , RRD_FLAG_ARCHIVED \ + \ + /* add these flags together with the above, if the above is not already set */ \ + , RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED | RRD_FLAG_UPDATED \ + \ + /* always remove these flags */ \ + , RRD_FLAG_COLLECTED \ + | RRD_FLAG_DELETED \ + | RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED \ + | RRD_FLAG_UPDATE_REASON_ZERO_RETENTION \ + ) + +#define rrd_flag_set_deleted(obj, reason) \ + rrd_flag_add_remove_atomic(&((obj)->flags) \ + /* check this flag */ \ + , RRD_FLAG_DELETED \ + \ + /* add these flags together with the above, if the above is not already set */ \ + , RRD_FLAG_UPDATE_REASON_ZERO_RETENTION | RRD_FLAG_UPDATED | (reason) \ + \ + /* always remove these flags */ \ + , RRD_FLAG_ARCHIVED \ + | RRD_FLAG_COLLECTED \ + ) + +#define rrd_flag_is_collected(obj) rrd_flag_check(obj, RRD_FLAG_COLLECTED) +#define rrd_flag_is_archived(obj) rrd_flag_check(obj, RRD_FLAG_ARCHIVED) +#define rrd_flag_is_deleted(obj) rrd_flag_check(obj, RRD_FLAG_DELETED) +#define rrd_flag_is_updated(obj) rrd_flag_check(obj, RRD_FLAG_UPDATED) + +// mark an object as updated, providing reasons (additional bits) +#define rrd_flag_set_updated(obj, reason) rrd_flag_set(obj, RRD_FLAG_UPDATED | (reason)) + +// clear an object as being updated, clearing also all the reasons +#define rrd_flag_unset_updated(obj) rrd_flag_clear(obj, RRD_FLAG_UPDATED | RRD_FLAG_ALL_UPDATE_REASONS) + + +static struct rrdcontext_reason { + RRD_FLAGS flag; + const char *name; + usec_t delay_ut; +} rrdcontext_reasons[] = { + // context related + {RRD_FLAG_UPDATE_REASON_TRIGGERED, "triggered transition", 65 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_NEW_OBJECT, "object created", 65 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT, "object updated", 65 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_LOAD_SQL, "loaded from sql", 65 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_CHANGED_METADATA, "changed metadata", 65 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_ZERO_RETENTION, "has no retention", 65 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T, "updated first_time_t", 65 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T, "updated last_time_t", 65 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED, "stopped collected", 65 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED, "started collected", 5 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_UNUSED, "unused", 5 * USEC_PER_SEC }, + + // not context related + {RRD_FLAG_UPDATE_REASON_CHANGED_LINKING, "changed rrd link", 65 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD, "child disconnected", 65 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_DB_ROTATION, "db rotation", 65 * USEC_PER_SEC }, + {RRD_FLAG_UPDATE_REASON_UPDATE_RETENTION, "updated retention", 65 * 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; +} 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->chart_labels or own version + + struct rrdcontext *rc; + DICTIONARY *rrdmetrics; + + struct { + uint32_t collected_metrics_count; // a temporary variable to detect BEGIN/END without SET + // don't use it for other purposes + // it goes up and then resets to zero, on every iteration + } internal; +} RRDINSTANCE; + +typedef struct rrdcontext { + uint64_t version; + + STRING *id; + STRING *title; + STRING *units; + STRING *family; + uint32_t priority; + RRDSET_TYPE chart_type; + + RRD_FLAGS flags; + time_t first_time_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 post-processing + usec_t queued_ut; // the last time this was queued + usec_t dequeued_ut; // the last time we sent (or deduplicated) this context + size_t executions; // how many times this context has been processed + } pp; + + struct { + RRD_FLAGS queued_flags; // the last flags that triggered the queueing + usec_t queued_ut; // the last time this was queued + usec_t delay_calc_ut; // the last time we calculated the scheduled_dispatched_ut + usec_t scheduled_dispatch_ut; // the time it was/is scheduled to be sent + usec_t dequeued_ut; // the last time we sent (or deduplicated) this context + size_t dispatches; // the number of times this has been dispatched to hub + } queue; + + netdata_mutex_t mutex; +} RRDCONTEXT; + +// ---------------------------------------------------------------------------- +// helper one-liners for RRDMETRIC + +static bool rrdmetric_update_retention(RRDMETRIC *rm); + +static inline RRDMETRIC *rrdmetric_acquired_value(RRDMETRIC_ACQUIRED *rma) { + return dictionary_acquired_item_value((DICTIONARY_ITEM *)rma); +} + +static inline RRDMETRIC_ACQUIRED *rrdmetric_acquired_dup(RRDMETRIC_ACQUIRED *rma) { + RRDMETRIC *rm = rrdmetric_acquired_value(rma); + return (RRDMETRIC_ACQUIRED *)dictionary_acquired_item_dup(rm->ri->rrdmetrics, (DICTIONARY_ITEM *)rma); +} + +static inline void rrdmetric_release(RRDMETRIC_ACQUIRED *rma) { + RRDMETRIC *rm = rrdmetric_acquired_value(rma); + dictionary_acquired_item_release(rm->ri->rrdmetrics, (DICTIONARY_ITEM *)rma); +} + +const char *rrdmetric_acquired_id(RRDMETRIC_ACQUIRED *rma) { + RRDMETRIC *rm = rrdmetric_acquired_value(rma); + return string2str(rm->id); +} + +const char *rrdmetric_acquired_name(RRDMETRIC_ACQUIRED *rma) { + RRDMETRIC *rm = rrdmetric_acquired_value(rma); + return string2str(rm->name); +} + +NETDATA_DOUBLE rrdmetric_acquired_last_stored_value(RRDMETRIC_ACQUIRED *rma) { + RRDMETRIC *rm = rrdmetric_acquired_value(rma); + + if(rm->rrddim) + return rm->rrddim->last_stored_value; + + return NAN; +} + +// ---------------------------------------------------------------------------- +// helper one-liners for RRDINSTANCE + +static inline RRDINSTANCE *rrdinstance_acquired_value(RRDINSTANCE_ACQUIRED *ria) { + return dictionary_acquired_item_value((DICTIONARY_ITEM *)ria); +} + +static inline RRDINSTANCE_ACQUIRED *rrdinstance_acquired_dup(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return (RRDINSTANCE_ACQUIRED *)dictionary_acquired_item_dup(ri->rc->rrdinstances, (DICTIONARY_ITEM *)ria); +} + +static inline void rrdinstance_release(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + dictionary_acquired_item_release(ri->rc->rrdinstances, (DICTIONARY_ITEM *)ria); +} + +const char *rrdinstance_acquired_id(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return string2str(ri->id); +} + +const char *rrdinstance_acquired_name(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return string2str(ri->name); +} + +DICTIONARY *rrdinstance_acquired_labels(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + return ri->rrdlabels; +} + +DICTIONARY *rrdinstance_acquired_functions(RRDINSTANCE_ACQUIRED *ria) { + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + if(!ri->rrdset) return NULL; + return ri->rrdset->functions_view; +} + +// ---------------------------------------------------------------------------- +// helper one-liners for RRDCONTEXT + +static inline RRDCONTEXT *rrdcontext_acquired_value(RRDCONTEXT_ACQUIRED *rca) { + return dictionary_acquired_item_value((DICTIONARY_ITEM *)rca); +} + +const char *rrdcontext_acquired_id(RRDCONTEXT_ACQUIRED *rca) { + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + return string2str(rc->id); +} + +static inline RRDCONTEXT_ACQUIRED *rrdcontext_acquired_dup(RRDCONTEXT_ACQUIRED *rca) { + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + return (RRDCONTEXT_ACQUIRED *)dictionary_acquired_item_dup((DICTIONARY *)rc->rrdhost->rrdctx, (DICTIONARY_ITEM *)rca); +} + +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, bool worker_jobs); +static void rrdcontext_recalculate_host_retention(RRDHOST *host, RRD_FLAGS reason, bool worker_jobs); + +#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); + +static void rrdcontext_garbage_collect_single_host(RRDHOST *host, bool worker_jobs); +static void rrdcontext_garbage_collect_for_all_hosts(void); + +#define rrdcontext_lock(rc) netdata_mutex_lock(&((rc)->mutex)) +#define rrdcontext_unlock(rc) netdata_mutex_unlock(&((rc)->mutex)) + +// ---------------------------------------------------------------------------- +// Forward definitions + +static uint64_t rrdcontext_get_next_version(RRDCONTEXT *rc); +static bool check_if_cloud_version_changed_unsafe(RRDCONTEXT *rc, bool sending __maybe_unused); +static void rrdcontext_message_send_unsafe(RRDCONTEXT *rc, bool snapshot __maybe_unused, void *bundle __maybe_unused); + +static void rrdcontext_delete_from_sql_unsafe(RRDCONTEXT *rc); + +static void rrdcontext_dequeue_from_post_processing(RRDCONTEXT *rc); +static void rrdcontext_queue_for_post_processing(RRDCONTEXT *rc, const char *function, RRD_FLAGS flags); +static void rrdcontext_post_process_updates(RRDCONTEXT *rc, bool force, RRD_FLAGS reason, bool worker_jobs); + +static void rrdmetric_trigger_updates(RRDMETRIC *rm, const char *function); +static void rrdinstance_trigger_updates(RRDINSTANCE *ri, const char *function); +static void rrdcontext_trigger_updates(RRDCONTEXT *rc, const char *function); + +// ---------------------------------------------------------------------------- +// visualizing flags + +static void rrd_flags_to_buffer(RRD_FLAGS flags, BUFFER *wb) { + if(flags & RRD_FLAG_QUEUED_FOR_HUB) + 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_HIDDEN) + buffer_strcat(wb, "HIDDEN "); + + if(flags & RRD_FLAG_QUEUED_FOR_PP) + buffer_strcat(wb, "PENDING_UPDATES "); +} + +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++; + } + } +} + +// ---------------------------------------------------------------------------- +// RRDMETRIC + +// free the contents of RRDMETRIC. +// RRDMETRIC itself is managed by DICTIONARY - no need to free it here. +static void rrdmetric_free(RRDMETRIC *rm) { + string_freez(rm->id); + string_freez(rm->name); + + rm->id = NULL; + rm->name = NULL; + rm->ri = NULL; +} + +// called when this rrdmetric is inserted to the rrdmetrics dictionary of a rrdinstance +// the constructor of the rrdmetric object +static void rrdmetric_insert_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *rrdinstance) { + RRDMETRIC *rm = value; + + // link it to its parent + rm->ri = rrdinstance; + + // remove flags that we need to figure out at runtime + rm->flags = rm->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS; // no need for atomics + + // 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 +// the destructor of the rrdmetric object +static void rrdmetric_delete_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *rrdinstance __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 +// while this is called, the dictionary is write locked, but there may be other users of the object +static bool rrdmetric_conflict_callback(const DICTIONARY_ITEM *item __maybe_unused, void *old_value, void *new_value, void *rrdinstance __maybe_unused) { + RRDMETRIC *rm = old_value; + RRDMETRIC *rm_new = new_value; + + 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) { +#ifdef NETDATA_INTERNAL_CHECKS + char uuid1[UUID_STR_LEN], uuid2[UUID_STR_LEN]; + uuid_unparse(rm->uuid, uuid1); + uuid_unparse(rm_new->uuid, uuid2); + + time_t old_first_time_t = 0; + time_t old_last_time_t = 0; + if(rrdmetric_update_retention(rm)) { + old_first_time_t = rm->first_time_t; + old_last_time_t = rm->last_time_t; + } + + uuid_copy(rm->uuid, rm_new->uuid); + + time_t new_first_time_t = 0; + time_t new_last_time_t = 0; + if(rrdmetric_update_retention(rm)) { + new_first_time_t = rm->first_time_t; + new_last_time_t = rm->last_time_t; + } + + internal_error(true, + "RRDMETRIC: '%s' of instance '%s' of host '%s' changed UUID from '%s' (retention %ld to %ld, %ld secs) to '%s' (retention %ld to %ld, %ld secs)" + , string2str(rm->id) + , string2str(rm->ri->id) + , rrdhost_hostname(rm->ri->rc->rrdhost) + , uuid1, old_first_time_t, old_last_time_t, old_last_time_t - old_first_time_t + , uuid2, new_first_time_t, new_last_time_t, new_last_time_t - new_first_time_t + ); +#else + uuid_copy(rm->uuid, rm_new->uuid); +#endif + rrd_flag_set_updated(rm, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + 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); + } + +#ifdef NETDATA_INTERNAL_CHECKS + 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), rrddim_id(rm->rrddim), uuid1, uuid2); + } +#endif + + 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_METADATA); + } + + 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); + } + + rrd_flag_set(rm, rm_new->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS); // no needs for atomics on rm_new + + if(rrd_flag_is_collected(rm) && rrd_flag_is_archived(rm)) + rrd_flag_set_collected(rm); + + if(rrd_flag_check(rm, RRD_FLAG_UPDATED)) + rrd_flag_set(rm, RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT); + + rrdmetric_free(rm_new); + + // the react callback will continue from here + return rrd_flag_is_updated(rm); +} + +// this is called after the insert or the conflict callbacks, +// but the dictionary is now unlocked +static void rrdmetric_react_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *rrdinstance __maybe_unused) { + RRDMETRIC *rm = value; + rrdmetric_trigger_updates(rm, __FUNCTION__ ); +} + +static void rrdmetrics_create_in_rrdinstance(RRDINSTANCE *ri) { + if(unlikely(!ri)) return; + if(likely(ri->rrdmetrics)) return; + + ri->rrdmetrics = dictionary_create(DICT_OPTION_DONT_OVERWRITE_VALUE); + dictionary_register_insert_callback(ri->rrdmetrics, rrdmetric_insert_callback, ri); + dictionary_register_delete_callback(ri->rrdmetrics, rrdmetric_delete_callback, ri); + dictionary_register_conflict_callback(ri->rrdmetrics, rrdmetric_conflict_callback, ri); + dictionary_register_react_callback(ri->rrdmetrics, rrdmetric_react_callback, ri); +} + +static void rrdmetrics_destroy_from_rrdinstance(RRDINSTANCE *ri) { + if(unlikely(!ri || !ri->rrdmetrics)) return; + dictionary_destroy(ri->rrdmetrics); + ri->rrdmetrics = NULL; +} + +// trigger post-processing of the rrdmetric, escalating changes to the rrdinstance it belongs +static void rrdmetric_trigger_updates(RRDMETRIC *rm, const char *function) { + if(unlikely(rrd_flag_is_collected(rm)) && (!rm->rrddim || rrd_flag_check(rm, RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD))) + rrd_flag_set_archived(rm); + + if(rrd_flag_is_updated(rm) || !rrd_flag_check(rm, RRD_FLAG_LIVE_RETENTION)) { + rrd_flag_set_updated(rm->ri, RRD_FLAG_UPDATE_REASON_TRIGGERED); + rrdcontext_queue_for_post_processing(rm->ri->rc, function, rm->flags); + } +} + +// ---------------------------------------------------------------------------- +// RRDMETRIC HOOKS ON RRDDIM + +static inline void rrdmetric_from_rrddim(RRDDIM *rd) { + if(unlikely(!rd->rrdset)) + fatal("RRDMETRIC: rrddim '%s' does not have a rrdset.", rrddim_id(rd)); + + if(unlikely(!rd->rrdset->rrdhost)) + fatal("RRDMETRIC: rrdset '%s' does not have a rrdhost", rrdset_id(rd->rrdset)); + + if(unlikely(!rd->rrdset->rrdinstance)) + fatal("RRDMETRIC: rrdset '%s' does not have a rrdinstance", rrdset_id(rd->rrdset)); + + RRDINSTANCE *ri = rrdinstance_acquired_value(rd->rrdset->rrdinstance); + + RRDMETRIC trm = { + .id = string_dup(rd->id), + .name = string_dup(rd->name), + .flags = RRD_FLAG_NONE, // no need for atomics + .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()", rrddim_id(rd), function); + return NULL; + } + + RRDMETRIC *rm = rrdmetric_acquired_value(rd->rrdmetric); + if(unlikely(!rm)) { + error("RRDMETRIC: RRDDIM '%s' lost the link to its RRDMETRIC at %s()", rrddim_id(rd), function); + return NULL; + } + + if(unlikely(rm->rrddim != rd)) + fatal("RRDMETRIC: '%s' is not linked to RRDDIM '%s' at %s()", string2str(rm->id), rrddim_id(rd), 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, __FUNCTION__ ); + 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(rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED|RRDDIM_FLAG_OBSOLETE))) { + if(unlikely(rrd_flag_is_collected(rm))) + rrd_flag_set_archived(rm); + } + + rrdmetric_trigger_updates(rm, __FUNCTION__ ); +} + +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); + + // we use this variable to detect BEGIN/END without SET + rm->ri->internal.collected_metrics_count++; + + rrdmetric_trigger_updates(rm, __FUNCTION__ ); +} + +// ---------------------------------------------------------------------------- +// RRDINSTANCE + +static void rrdinstance_free(RRDINSTANCE *ri) { + + if(rrd_flag_check(ri, RRD_FLAG_OWN_LABELS)) + dictionary_destroy(ri->rrdlabels); + + rrdmetrics_destroy_from_rrdinstance(ri); + string_freez(ri->id); + string_freez(ri->name); + string_freez(ri->title); + string_freez(ri->units); + string_freez(ri->family); + + ri->id = NULL; + ri->name = NULL; + ri->title = NULL; + ri->units = NULL; + ri->family = NULL; + ri->rc = NULL; + ri->rrdlabels = NULL; + ri->rrdmetrics = NULL; + ri->rrdset = NULL; +} + +static void rrdinstance_insert_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *rrdcontext) { + 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 = rrdcontext; + + ri->flags = ri->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS; // no need for atomics + + if(!ri->name) + ri->name = string_dup(ri->id); + + if(ri->rrdset) { + ri->rrdlabels = ri->rrdset->rrdlabels; + ri->flags &= ~RRD_FLAG_OWN_LABELS; // no need of atomics at the constructor + } + else { + ri->rrdlabels = rrdlabels_create(); + ri->flags |= RRD_FLAG_OWN_LABELS; // no need of atomics at the constructor + } + + if(ri->rrdset) { + if(unlikely(rrdset_flag_check(ri->rrdset, RRDSET_FLAG_HIDDEN))) + ri->flags |= RRD_FLAG_HIDDEN; // no need of atomics at the constructor + else + ri->flags &= ~RRD_FLAG_HIDDEN; // no need of atomics at the constructor + } + + // we need this when loading from SQL + if(unlikely(ri->id == ml_anomaly_rates_id)) + ri->flags |= RRD_FLAG_HIDDEN; // no need of atomics at the constructor + + rrdmetrics_create_in_rrdinstance(ri); + + // signal the react callback to do the job + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_NEW_OBJECT); +} + +static void rrdinstance_delete_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *rrdcontext __maybe_unused) { + RRDINSTANCE *ri = (RRDINSTANCE *)value; + + internal_error(ri->rrdset, "RRDINSTANCE: '%s' is freed but there is a RRDSET linked to it.", string2str(ri->id)); + + rrdinstance_free(ri); +} + +static bool rrdinstance_conflict_callback(const DICTIONARY_ITEM *item __maybe_unused, void *old_value, void *new_value, void *rrdcontext __maybe_unused) { + RRDINSTANCE *ri = (RRDINSTANCE *)old_value; + RRDINSTANCE *ri_new = (RRDINSTANCE *)new_value; + + internal_error(ri->id != ri_new->id, + "RRDINSTANCE: '%s' cannot change id to '%s'", + string2str(ri->id), string2str(ri_new->id)); + + if(uuid_compare(ri->uuid, ri_new->uuid) != 0) { +#ifdef NETDATA_INTERNAL_CHECKS + char uuid1[UUID_STR_LEN], uuid2[UUID_STR_LEN]; + uuid_unparse(ri->uuid, uuid1); + uuid_unparse(ri_new->uuid, uuid2); + internal_error(true, "RRDINSTANCE: '%s' of host '%s' changed UUID from '%s' to '%s'", + string2str(ri->id), rrdhost_hostname(ri->rc->rrdhost), uuid1, uuid2); +#endif + + uuid_copy(ri->uuid, ri_new->uuid); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->rrdset && ri_new->rrdset && ri->rrdset != ri_new->rrdset) { + ri->rrdset = ri_new->rrdset; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_LINKING); + } + +#ifdef NETDATA_INTERNAL_CHECKS + if(ri->rrdset && uuid_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), rrdset_id(ri->rrdset), uuid1, uuid2); + } +#endif + + if(ri->name != ri_new->name) { + STRING *old = ri->name; + ri->name = string_dup(ri_new->name); + string_freez(old); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->title != ri_new->title) { + STRING *old = ri->title; + ri->title = string_dup(ri_new->title); + string_freez(old); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->units != ri_new->units) { + STRING *old = ri->units; + ri->units = string_dup(ri_new->units); + string_freez(old); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->family != ri_new->family) { + STRING *old = ri->family; + ri->family = string_dup(ri_new->family); + string_freez(old); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->chart_type != ri_new->chart_type) { + ri->chart_type = ri_new->chart_type; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->priority != ri_new->priority) { + ri->priority = ri_new->priority; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->update_every != ri_new->update_every) { + ri->update_every = ri_new->update_every; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + if(ri->rrdset != ri_new->rrdset) { + ri->rrdset = ri_new->rrdset; + + if(ri->rrdset && rrd_flag_check(ri, RRD_FLAG_OWN_LABELS)) { + DICTIONARY *old = ri->rrdlabels; + ri->rrdlabels = ri->rrdset->rrdlabels; + rrd_flag_clear(ri, RRD_FLAG_OWN_LABELS); + rrdlabels_destroy(old); + } + else if(!ri->rrdset && !rrd_flag_check(ri, RRD_FLAG_OWN_LABELS)) { + ri->rrdlabels = rrdlabels_create(); + rrd_flag_set(ri, RRD_FLAG_OWN_LABELS); + } + } + + if(ri->rrdset) { + if(unlikely(rrdset_flag_check(ri->rrdset, RRDSET_FLAG_HIDDEN))) + rrd_flag_set(ri, RRD_FLAG_HIDDEN); + else + rrd_flag_clear(ri, RRD_FLAG_HIDDEN); + } + + rrd_flag_set(ri, ri_new->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS); // no need for atomics on ri_new + + if(rrd_flag_is_collected(ri) && rrd_flag_is_archived(ri)) + rrd_flag_set_collected(ri); + + if(rrd_flag_is_updated(ri)) + rrd_flag_set(ri, RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT); + + // free the new one + rrdinstance_free(ri_new); + + // the react callback will continue from here + return rrd_flag_is_updated(ri); +} + +static void rrdinstance_react_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *rrdcontext __maybe_unused) { + RRDINSTANCE *ri = value; + + rrdinstance_trigger_updates(ri, __FUNCTION__ ); +} + +void rrdinstances_create_in_rrdcontext(RRDCONTEXT *rc) { + if(unlikely(!rc || rc->rrdinstances)) return; + + rc->rrdinstances = dictionary_create(DICT_OPTION_DONT_OVERWRITE_VALUE); + dictionary_register_insert_callback(rc->rrdinstances, rrdinstance_insert_callback, rc); + dictionary_register_delete_callback(rc->rrdinstances, rrdinstance_delete_callback, rc); + dictionary_register_conflict_callback(rc->rrdinstances, rrdinstance_conflict_callback, rc); + dictionary_register_react_callback(rc->rrdinstances, rrdinstance_react_callback, rc); +} + +void rrdinstances_destroy_from_rrdcontext(RRDCONTEXT *rc) { + if(unlikely(!rc || !rc->rrdinstances)) return; + + dictionary_destroy(rc->rrdinstances); + rc->rrdinstances = NULL; +} + +static void rrdinstance_trigger_updates(RRDINSTANCE *ri, const char *function) { + RRDSET *st = ri->rrdset; + + if(likely(st)) { + if(unlikely((unsigned int) st->priority != ri->priority)) { + ri->priority = st->priority; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + if(unlikely(st->update_every != ri->update_every)) { + ri->update_every = st->update_every; + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + } + else if(unlikely(rrd_flag_is_collected(ri))) { + // there is no rrdset, but we have it as collected! + + rrd_flag_set_archived(ri); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_LINKING); + } + + if(rrd_flag_is_updated(ri) || !rrd_flag_check(ri, RRD_FLAG_LIVE_RETENTION)) { + rrd_flag_set_updated(ri->rc, RRD_FLAG_UPDATE_REASON_TRIGGERED); + rrdcontext_queue_for_post_processing(ri->rc, function, ri->flags); + } +} + +// ---------------------------------------------------------------------------- +// RRDINSTANCE HOOKS ON RRDSET + +static inline void rrdinstance_from_rrdset(RRDSET *st) { + RRDCONTEXT trc = { + .id = string_dup(st->context), + .title = string_dup(st->title), + .units = string_dup(st->units), + .family = string_dup(st->family), + .priority = st->priority, + .chart_type = st->chart_type, + .flags = RRD_FLAG_NONE, // no need for atomics + .rrdhost = st->rrdhost, + }; + + RRDCONTEXT_ACQUIRED *rca = (RRDCONTEXT_ACQUIRED *)dictionary_set_and_acquire_item((DICTIONARY *)st->rrdhost->rrdctx, string2str(trc.id), &trc, sizeof(trc)); + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + + RRDINSTANCE tri = { + .id = string_dup(st->id), + .name = string_dup(st->name), + .units = string_dup(st->units), + .family = string_dup(st->family), + .title = string_dup(st->title), + .chart_type = st->chart_type, + .priority = st->priority, + .update_every = st->update_every, + .flags = RRD_FLAG_NONE, // no need for atomics + .rrdset = st, + }; + uuid_copy(tri.uuid, st->chart_uuid); + + RRDINSTANCE_ACQUIRED *ria = (RRDINSTANCE_ACQUIRED *)dictionary_set_and_acquire_item(rc->rrdinstances, string2str(tri.id), &tri, sizeof(tri)); + + RRDCONTEXT_ACQUIRED *rca_old = st->rrdcontext; + RRDINSTANCE_ACQUIRED *ria_old = st->rrdinstance; + + st->rrdcontext = rca; + st->rrdinstance = ria; + + if(rca == rca_old) { + rrdcontext_release(rca_old); + rca_old = NULL; + } + + if(ria == ria_old) { + rrdinstance_release(ria_old); + ria_old = NULL; + } + + if(rca_old && ria_old) { + // Oops! The chart changed context! + + // RRDCONTEXT *rc_old = rrdcontext_acquired_value(rca_old); + RRDINSTANCE *ri_old = rrdinstance_acquired_value(ria_old); + + // migrate all dimensions to the new metrics + RRDDIM *rd; + rrddim_foreach_read(rd, st) { + if (!rd->rrdmetric) continue; + + RRDMETRIC *rm_old = rrdmetric_acquired_value(rd->rrdmetric); + rrd_flags_replace(rm_old, RRD_FLAG_DELETED|RRD_FLAG_UPDATED|RRD_FLAG_LIVE_RETENTION|RRD_FLAG_UPDATE_REASON_UNUSED|RRD_FLAG_UPDATE_REASON_ZERO_RETENTION); + rm_old->rrddim = NULL; + rm_old->first_time_t = 0; + rm_old->last_time_t = 0; + + rrdmetric_release(rd->rrdmetric); + rd->rrdmetric = NULL; + + rrdmetric_from_rrddim(rd); + } + rrddim_foreach_done(rd); + + // mark the old instance, ready to be deleted + if(!rrd_flag_check(ri_old, RRD_FLAG_OWN_LABELS)) + ri_old->rrdlabels = rrdlabels_create(); + + rrd_flags_replace(ri_old, RRD_FLAG_OWN_LABELS|RRD_FLAG_DELETED|RRD_FLAG_UPDATED|RRD_FLAG_LIVE_RETENTION|RRD_FLAG_UPDATE_REASON_UNUSED|RRD_FLAG_UPDATE_REASON_ZERO_RETENTION); + ri_old->rrdset = NULL; + ri_old->first_time_t = 0; + ri_old->last_time_t = 0; + + rrdinstance_trigger_updates(ri_old, __FUNCTION__ ); + rrdinstance_release(ria_old); + + /* + // trigger updates on the old context + if(!dictionary_entries(rc_old->rrdinstances) && !dictionary_stats_referenced_items(rc_old->rrdinstances)) { + rrdcontext_lock(rc_old); + rc_old->flags = ((rc_old->flags & RRD_FLAG_QUEUED)?RRD_FLAG_QUEUED:RRD_FLAG_NONE)|RRD_FLAG_DELETED|RRD_FLAG_UPDATED|RRD_FLAG_LIVE_RETENTION|RRD_FLAG_UPDATE_REASON_UNUSED|RRD_FLAG_UPDATE_REASON_ZERO_RETENTION; + rc_old->first_time_t = 0; + rc_old->last_time_t = 0; + rrdcontext_unlock(rc_old); + rrdcontext_trigger_updates(rc_old, __FUNCTION__ ); + } + else + rrdcontext_trigger_updates(rc_old, __FUNCTION__ ); + */ + + rrdcontext_release(rca_old); + rca_old = NULL; + ria_old = NULL; + } + + if(rca_old || ria_old) + fatal("RRDCONTEXT: cannot switch rrdcontext without switching rrdinstance too"); +} + +#define rrdset_get_rrdinstance(st) rrdset_get_rrdinstance_with_trace(st, __FUNCTION__); +static inline RRDINSTANCE *rrdset_get_rrdinstance_with_trace(RRDSET *st, const char *function) { + if(unlikely(!st->rrdinstance)) { + error("RRDINSTANCE: RRDSET '%s' is not linked to an RRDINSTANCE at %s()", rrdset_id(st), function); + return NULL; + } + + RRDINSTANCE *ri = rrdinstance_acquired_value(st->rrdinstance); + if(unlikely(!ri)) { + error("RRDINSTANCE: RRDSET '%s' lost its link to an RRDINSTANCE at %s()", rrdset_id(st), function); + return NULL; + } + + if(unlikely(ri->rrdset != st)) + fatal("RRDINSTANCE: '%s' is not linked to RRDSET '%s' at %s()", string2str(ri->id), rrdset_id(st), function); + + return ri; +} + +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(!rrd_flag_check(ri, RRD_FLAG_OWN_LABELS)) { + ri->rrdlabels = rrdlabels_create(); + rrdlabels_copy(ri->rrdlabels, st->rrdlabels); + rrd_flag_set(ri, RRD_FLAG_OWN_LABELS); + } + + ri->rrdset = NULL; + + rrdinstance_trigger_updates(ri, __FUNCTION__ ); + + rrdinstance_release(st->rrdinstance); + st->rrdinstance = NULL; + + rrdcontext_release(st->rrdcontext); + st->rrdcontext = NULL; +} + +static inline void rrdinstance_rrdset_has_updated_retention(RRDSET *st) { + RRDINSTANCE *ri = rrdset_get_rrdinstance(st); + if(unlikely(!ri)) return; + + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_UPDATE_RETENTION); + rrdinstance_trigger_updates(ri, __FUNCTION__ ); +} + +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; + + if(st->name != ri->name) { + STRING *old = ri->name; + ri->name = string_dup(st->name); + string_freez(old); + + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + rrdinstance_trigger_updates(ri, __FUNCTION__ ); + } +} + +static inline void rrdinstance_updated_rrdset_flags_no_action(RRDINSTANCE *ri, RRDSET *st) { + if(unlikely(ri->rrdset != st)) + fatal("RRDCONTEXT: instance '%s' is not linked to chart '%s' on host '%s'", + string2str(ri->id), rrdset_id(st), rrdhost_hostname(st->rrdhost)); + + bool st_is_hidden = rrdset_flag_check(st, RRDSET_FLAG_HIDDEN); + bool ri_is_hidden = rrd_flag_check(ri, RRD_FLAG_HIDDEN); + + if(unlikely(st_is_hidden != ri_is_hidden)) { + if (unlikely(st_is_hidden && !ri_is_hidden)) + rrd_flag_set_updated(ri, RRD_FLAG_HIDDEN | RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + + else if (unlikely(!st_is_hidden && ri_is_hidden)) { + rrd_flag_clear(ri, RRD_FLAG_HIDDEN); + rrd_flag_set_updated(ri, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + } +} + +static inline void rrdinstance_updated_rrdset_flags(RRDSET *st) { + RRDINSTANCE *ri = rrdset_get_rrdinstance(st); + if(unlikely(!ri)) return; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_ARCHIVED|RRDSET_FLAG_OBSOLETE))) + rrd_flag_set_archived(ri); + + rrdinstance_updated_rrdset_flags_no_action(ri, st); + + rrdinstance_trigger_updates(ri, __FUNCTION__ ); +} + +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(ri->internal.collected_metrics_count && !rrd_flag_is_collected(ri))) + rrd_flag_set_collected(ri); + + // we use this variable to detect BEGIN/END without SET + ri->internal.collected_metrics_count = 0; + + rrdinstance_trigger_updates(ri, __FUNCTION__ ); +} + +// ---------------------------------------------------------------------------- +// RRDCONTEXT + +static void rrdcontext_freez(RRDCONTEXT *rc) { + string_freez(rc->id); + string_freez(rc->title); + string_freez(rc->units); + string_freez(rc->family); +} + +static void rrdcontext_insert_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *rrdhost) { + RRDHOST *host = (RRDHOST *)rrdhost; + RRDCONTEXT *rc = (RRDCONTEXT *)value; + + rc->rrdhost = host; + rc->flags = rc->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS; // no need for atomics at constructor + + if(rc->hub.version) { + // we are loading data from the SQL database + + if(rc->version) + error("RRDCONTEXT: context '%s' is already initialized with version %"PRIu64", but it is loaded again from SQL with version %"PRIu64"", 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 = (time_t)rc->hub.first_time_t; + rc->last_time_t = (time_t)rc->hub.last_time_t; + + if(rc->hub.deleted || !rc->hub.first_time_t) + rrd_flag_set_deleted(rc, RRD_FLAG_NONE); + 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; // no need for atomics at constructor + } + else { + // we are adding this context now for the first time + rc->version = now_realtime_sec(); + } + + rrdinstances_create_in_rrdcontext(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 DICTIONARY_ITEM *item __maybe_unused, void *value, void *rrdhost __maybe_unused) { + + RRDCONTEXT *rc = (RRDCONTEXT *)value; + + rrdinstances_destroy_from_rrdcontext(rc); + netdata_mutex_destroy(&rc->mutex); + rrdcontext_freez(rc); +} + +static bool rrdcontext_conflict_callback(const DICTIONARY_ITEM *item __maybe_unused, void *old_value, void *new_value, void *rrdhost __maybe_unused) { + RRDCONTEXT *rc = (RRDCONTEXT *)old_value; + RRDCONTEXT *rc_new = (RRDCONTEXT *)new_value; + + //current rc is not archived, new_rc is archived, don't merge + if (!rrd_flag_is_archived(rc) && rrd_flag_is_archived(rc_new)) { + rrdcontext_freez(rc_new); + return false; + } + + rrdcontext_lock(rc); + + if(rc->title != rc_new->title) { + STRING *old_title = rc->title; + if (rrd_flag_is_archived(rc) && !rrd_flag_is_archived(rc_new)) + rc->title = string_dup(rc_new->title); + else + rc->title = string_2way_merge(rc->title, rc_new->title); + string_freez(old_title); + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + 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_METADATA); + } + + if(rc->family != rc_new->family) { + STRING *old_family = rc->family; + if (rrd_flag_is_archived(rc) && !rrd_flag_is_archived(rc_new)) + rc->family = string_dup(rc_new->family); + else + rc->family = string_2way_merge(rc->family, rc_new->family); + string_freez(old_family); + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + 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_METADATA); + } + + if(rc->priority != rc_new->priority) { + rc->priority = rc_new->priority; + rrd_flag_set_updated(rc, RRD_FLAG_UPDATE_REASON_CHANGED_METADATA); + } + + rrd_flag_set(rc, rc_new->flags & RRD_FLAGS_ALLOWED_EXTERNALLY_ON_NEW_OBJECTS); // no need for atomics on rc_new + + if(rrd_flag_is_collected(rc) && rrd_flag_is_archived(rc)) + rrd_flag_set_collected(rc); + + if(rrd_flag_is_updated(rc)) + rrd_flag_set(rc, 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 + return rrd_flag_is_updated(rc); +} + +static void rrdcontext_react_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *rrdhost __maybe_unused) { + RRDCONTEXT *rc = (RRDCONTEXT *)value; + rrdcontext_trigger_updates(rc, __FUNCTION__ ); +} + +static void rrdcontext_trigger_updates(RRDCONTEXT *rc, const char *function) { + if(rrd_flag_is_updated(rc) || !rrd_flag_check(rc, RRD_FLAG_LIVE_RETENTION)) + rrdcontext_queue_for_post_processing(rc, function, rc->flags); +} + +static void rrdcontext_hub_queue_insert_callback(const DICTIONARY_ITEM *item __maybe_unused, void *context, void *nothing __maybe_unused) { + RRDCONTEXT *rc = context; + rrd_flag_set(rc, RRD_FLAG_QUEUED_FOR_HUB); + rc->queue.queued_ut = now_realtime_usec(); + rc->queue.queued_flags = rrd_flags_get(rc); +} + +static void rrdcontext_hub_queue_delete_callback(const DICTIONARY_ITEM *item __maybe_unused, void *context, void *nothing __maybe_unused) { + RRDCONTEXT *rc = context; + rrd_flag_clear(rc, RRD_FLAG_QUEUED_FOR_HUB); +} + +static bool rrdcontext_hub_queue_conflict_callback(const DICTIONARY_ITEM *item __maybe_unused, void *context, void *new_context __maybe_unused, void *nothing __maybe_unused) { + // context and new_context are the same + // we just need to update the timings + RRDCONTEXT *rc = context; + rrd_flag_set(rc, RRD_FLAG_QUEUED_FOR_HUB); + rc->queue.queued_ut = now_realtime_usec(); + rc->queue.queued_flags |= rrd_flags_get(rc); + + return true; +} + +static void rrdcontext_post_processing_queue_insert_callback(const DICTIONARY_ITEM *item __maybe_unused, void *context, void *nothing __maybe_unused) { + RRDCONTEXT *rc = context; + rrd_flag_set(rc, RRD_FLAG_QUEUED_FOR_PP); + rc->pp.queued_flags = rc->flags; + rc->pp.queued_ut = now_realtime_usec(); +} + +static void rrdcontext_post_processing_queue_delete_callback(const DICTIONARY_ITEM *item __maybe_unused, void *context, void *nothing __maybe_unused) { + RRDCONTEXT *rc = context; + rrd_flag_clear(rc, RRD_FLAG_QUEUED_FOR_PP); + rc->pp.dequeued_ut = now_realtime_usec(); +} + +static bool rrdcontext_post_processing_queue_conflict_callback(const DICTIONARY_ITEM *item __maybe_unused, void *context, void *new_context __maybe_unused, void *nothing __maybe_unused) { + RRDCONTEXT *rc = context; + bool changed = false; + + if(!(rc->flags & RRD_FLAG_QUEUED_FOR_PP)) { + rrd_flag_set(rc, RRD_FLAG_QUEUED_FOR_PP); + changed = true; + } + + if(rc->pp.queued_flags != rc->flags) { + rc->pp.queued_flags |= rc->flags; + changed = true; + } + + return changed; +} + +void rrdhost_create_rrdcontexts(RRDHOST *host) { + if(unlikely(!host)) return; + if(likely(host->rrdctx)) return; + + host->rrdctx = (RRDCONTEXTS *)dictionary_create(DICT_OPTION_DONT_OVERWRITE_VALUE); + dictionary_register_insert_callback((DICTIONARY *)host->rrdctx, rrdcontext_insert_callback, host); + dictionary_register_delete_callback((DICTIONARY *)host->rrdctx, rrdcontext_delete_callback, host); + dictionary_register_conflict_callback((DICTIONARY *)host->rrdctx, rrdcontext_conflict_callback, host); + dictionary_register_react_callback((DICTIONARY *)host->rrdctx, rrdcontext_react_callback, host); + + host->rrdctx_hub_queue = (RRDCONTEXTS *)dictionary_create(DICT_OPTION_DONT_OVERWRITE_VALUE | DICT_OPTION_VALUE_LINK_DONT_CLONE); + dictionary_register_insert_callback((DICTIONARY *)host->rrdctx_hub_queue, rrdcontext_hub_queue_insert_callback, NULL); + dictionary_register_delete_callback((DICTIONARY *)host->rrdctx_hub_queue, rrdcontext_hub_queue_delete_callback, NULL); + dictionary_register_conflict_callback((DICTIONARY *)host->rrdctx_hub_queue, rrdcontext_hub_queue_conflict_callback, NULL); + + host->rrdctx_post_processing_queue = (RRDCONTEXTS *)dictionary_create(DICT_OPTION_DONT_OVERWRITE_VALUE | DICT_OPTION_VALUE_LINK_DONT_CLONE); + dictionary_register_insert_callback((DICTIONARY *)host->rrdctx_post_processing_queue, rrdcontext_post_processing_queue_insert_callback, NULL); + dictionary_register_delete_callback((DICTIONARY *)host->rrdctx_post_processing_queue, rrdcontext_post_processing_queue_delete_callback, NULL); + dictionary_register_conflict_callback((DICTIONARY *)host->rrdctx_post_processing_queue, rrdcontext_post_processing_queue_conflict_callback, NULL); +} + +void rrdhost_destroy_rrdcontexts(RRDHOST *host) { + if(unlikely(!host)) return; + if(unlikely(!host->rrdctx)) return; + + DICTIONARY *old; + + if(host->rrdctx_hub_queue) { + old = (DICTIONARY *)host->rrdctx_hub_queue; + host->rrdctx_hub_queue = NULL; + + RRDCONTEXT *rc; + dfe_start_write(old, rc) { + dictionary_del(old, string2str(rc->id)); + } + dfe_done(rc); + dictionary_destroy(old); + } + + if(host->rrdctx_post_processing_queue) { + old = (DICTIONARY *)host->rrdctx_post_processing_queue; + host->rrdctx_post_processing_queue = NULL; + + RRDCONTEXT *rc; + dfe_start_write(old, rc) { + dictionary_del(old, string2str(rc->id)); + } + dfe_done(rc); + dictionary_destroy(old); + } + + old = (DICTIONARY *)host->rrdctx; + host->rrdctx = NULL; + dictionary_destroy(old); +} + +// ---------------------------------------------------------------------------- +// public API + +void rrdcontext_updated_rrddim(RRDDIM *rd) { + rrdmetric_from_rrddim(rd); +} + +void rrdcontext_removed_rrddim(RRDDIM *rd) { + rrdmetric_rrddim_is_freed(rd); +} + +void rrdcontext_updated_rrddim_algorithm(RRDDIM *rd) { + rrdmetric_updated_rrddim_flags(rd); +} + +void rrdcontext_updated_rrddim_multiplier(RRDDIM *rd) { + rrdmetric_updated_rrddim_flags(rd); +} + +void rrdcontext_updated_rrddim_divisor(RRDDIM *rd) { + rrdmetric_updated_rrddim_flags(rd); +} + +void rrdcontext_updated_rrddim_flags(RRDDIM *rd) { + rrdmetric_updated_rrddim_flags(rd); +} + +void rrdcontext_collected_rrddim(RRDDIM *rd) { + rrdmetric_collected_rrddim(rd); +} + +void rrdcontext_updated_rrdset(RRDSET *st) { + rrdinstance_from_rrdset(st); +} + +void rrdcontext_removed_rrdset(RRDSET *st) { + rrdinstance_rrdset_is_freed(st); +} + +void rrdcontext_updated_retention_rrdset(RRDSET *st) { + rrdinstance_rrdset_has_updated_retention(st); +} + +void rrdcontext_updated_rrdset_name(RRDSET *st) { + rrdinstance_updated_rrdset_name(st); +} + +void rrdcontext_updated_rrdset_flags(RRDSET *st) { + rrdinstance_updated_rrdset_flags(st); +} + +void rrdcontext_collected_rrdset(RRDSET *st) { + rrdinstance_collected_rrdset(st); +} + +void rrdcontext_host_child_connected(RRDHOST *host) { + (void)host; + + // no need to do anything here + ; +} + +int rrdcontext_find_dimension_uuid(RRDSET *st, const char *id, uuid_t *store_uuid) { + if(!st->rrdhost) return 1; + if(!st->context) return 2; + + RRDCONTEXT_ACQUIRED *rca = (RRDCONTEXT_ACQUIRED *)dictionary_get_and_acquire_item((DICTIONARY *)st->rrdhost->rrdctx, string2str(st->context)); + if(!rca) return 3; + + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + + RRDINSTANCE_ACQUIRED *ria = (RRDINSTANCE_ACQUIRED *)dictionary_get_and_acquire_item(rc->rrdinstances, string2str(st->id)); + if(!ria) { + rrdcontext_release(rca); + return 4; + } + + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + + RRDMETRIC_ACQUIRED *rma = (RRDMETRIC_ACQUIRED *)dictionary_get_and_acquire_item(ri->rrdmetrics, id); + if(!rma) { + rrdinstance_release(ria); + rrdcontext_release(rca); + return 5; + } + + RRDMETRIC *rm = rrdmetric_acquired_value(rma); + + uuid_copy(*store_uuid, rm->uuid); + + rrdmetric_release(rma); + rrdinstance_release(ria); + rrdcontext_release(rca); + return 0; +} + +int rrdcontext_find_chart_uuid(RRDSET *st, uuid_t *store_uuid) { + if(!st->rrdhost) return 1; + if(!st->context) return 2; + + RRDCONTEXT_ACQUIRED *rca = (RRDCONTEXT_ACQUIRED *)dictionary_get_and_acquire_item((DICTIONARY *)st->rrdhost->rrdctx, string2str(st->context)); + if(!rca) return 3; + + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + + RRDINSTANCE_ACQUIRED *ria = (RRDINSTANCE_ACQUIRED *)dictionary_get_and_acquire_item(rc->rrdinstances, string2str(st->id)); + if(!ria) { + rrdcontext_release(rca); + return 4; + } + + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + uuid_copy(*store_uuid, ri->uuid); + + rrdinstance_release(ria); + rrdcontext_release(rca); + return 0; +} + +void rrdcontext_host_child_disconnected(RRDHOST *host) { + rrdcontext_recalculate_host_retention(host, RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD, false); +} + +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; +} + +int rrdcontext_foreach_instance_with_rrdset_in_context(RRDHOST *host, const char *context, int (*callback)(RRDSET *st, void *data), void *data) { + if(unlikely(!host || !context || !*context || !callback)) + return -1; + + RRDCONTEXT_ACQUIRED *rca = (RRDCONTEXT_ACQUIRED *)dictionary_get_and_acquire_item((DICTIONARY *)host->rrdctx, context); + if(unlikely(!rca)) return -1; + + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + if(unlikely(!rc)) return -1; + + int ret = 0; + RRDINSTANCE *ri; + dfe_start_read(rc->rrdinstances, ri) { + if(ri->rrdset) { + int r = callback(ri->rrdset, data); + if(r >= 0) ret += r; + else { + ret = r; + break; + } + } + } + dfe_done(ri); + + rrdcontext_release(rca); + + return ret; +} + +// ---------------------------------------------------------------------------- +// 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, rrdhost_hostname(host)); + + // 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 %"PRIu64" for host '%s', does not match our version hash %"PRIu64". Sending snapshot of all contexts.", + cmd->version_hash, rrdhost_hostname(host), 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, false); + + // 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", rrdhost_hostname(host)); + 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, rrdhost_hostname(host)); +} + +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, rrdhost_hostname(host)); + + return; + } + + internal_error(true, "RRDCONTEXT: host '%s' disabling streaming of contexts", rrdhost_hostname(host)); + 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 DICTIONARY_ITEM *item, void *value, void *data) { + const char *id = dictionary_acquired_item_name(item); + 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(unlikely(rrd_flag_is_deleted(rm) && !(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 |= rrd_flags_get(rm); + } + 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 = rrd_flags_get(rm); + } + + 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\":%lld" + ",\n\t\t\t\t\t\t\t\"last_time_t\":%lld" + ",\n\t\t\t\t\t\t\t\"collected\":%s" + , string2str(rm->name) + , (long long)rm->first_time_t + , rrd_flag_is_collected(rm) ? (long long)t->now : (long long)rm->last_time_t + , rrd_flag_is_collected(rm) ? "true" : "false" + ); + + if(options & RRDCONTEXT_OPTION_SHOW_DELETED) { + buffer_sprintf(wb, + ",\n\t\t\t\t\t\t\t\"deleted\":%s" + , rrd_flag_is_deleted(rm) ? "true" : "false" + ); + } + + if(options & RRDCONTEXT_OPTION_SHOW_FLAGS) { + buffer_strcat(wb, ",\n\t\t\t\t\t\t\t\"flags\":\""); + rrd_flags_to_buffer(rrd_flags_get(rm), 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 DICTIONARY_ITEM *item, void *value, void *data) { + const char *id = dictionary_acquired_item_name(item); + + 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(unlikely(rrd_flag_is_deleted(ri) && !(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 = rrd_flags_get(ri); + + 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\":%lld" + ",\n\t\t\t\t\t\"last_time_t\":%lld" + ",\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 + , (long long)first_time_t + , (flags & RRD_FLAG_COLLECTED) ? (long long)t_parent->now : (long long)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" + , rrd_flag_is_deleted(ri) ? "true" : "false" + ); + } + + if(options & RRDCONTEXT_OPTION_SHOW_FLAGS) { + buffer_strcat(wb, ",\n\t\t\t\t\t\"flags\":\""); + rrd_flags_to_buffer(rrd_flags_get(ri), wb); + buffer_strcat(wb, "\""); + } + + if(options & RRDCONTEXT_OPTION_SHOW_LABELS && ri->rrdlabels && dictionary_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 DICTIONARY_ITEM *item, void *value, void *data) { + const char *id = dictionary_acquired_item_name(item); + 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(rrd_flag_check(rc, RRD_FLAG_HIDDEN) && !(options & RRDCONTEXT_OPTION_SHOW_HIDDEN))) + return 0; + + if(unlikely(rrd_flag_is_deleted(rc) && !(options & RRDCONTEXT_OPTION_SHOW_DELETED))) + return 0; + + if(options & RRDCONTEXT_OPTION_DEEPSCAN) + rrdcontext_recalculate_context_retention(rc, RRD_FLAG_NONE, false); + + 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 = rrd_flags_get(rc); + + 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\":%lld" + ",\n\t\t\t\"last_time_t\":%lld" + ",\n\t\t\t\"collected\":%s" + , string2str(rc->title) + , string2str(rc->units) + , string2str(rc->family) + , rrdset_type_name(rc->chart_type) + , rc->priority + , (long long)first_time_t + , (flags & RRD_FLAG_COLLECTED) ? (long long)t_parent->now : (long long)last_time_t + , (flags & RRD_FLAG_COLLECTED) ? "true" : "false" + ); + + if(options & RRDCONTEXT_OPTION_SHOW_DELETED) { + buffer_sprintf(wb, + ",\n\t\t\t\"deleted\":%s" + , rrd_flag_is_deleted(rc) ? "true" : "false" + ); + } + + if(options & RRDCONTEXT_OPTION_SHOW_FLAGS) { + buffer_strcat(wb, ",\n\t\t\t\"flags\":\""); + rrd_flags_to_buffer(rrd_flags_get(rc), 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\"dispatches\":%zu" + ",\n\t\t\t\"hub_version\":%"PRIu64"" + ",\n\t\t\t\"version\":%"PRIu64"" + , rc->queue.queued_ut / USEC_PER_SEC + , rc->queue.scheduled_dispatch_ut / USEC_PER_SEC + , rc->queue.dequeued_ut / USEC_PER_SEC + , rc->queue.dispatches + , rc->hub.version + , rc->version + ); + + buffer_strcat(wb, ",\n\t\t\t\"pp_reasons\":\""); + rrd_reasons_to_buffer(rc->pp.queued_flags, wb); + buffer_strcat(wb, "\""); + + buffer_sprintf(wb, + ",\n\t\t\t\"pp_last_queued\":%llu" + ",\n\t\t\t\"pp_last_dequeued\":%llu" + ",\n\t\t\t\"pp_executed\":%zu" + , rc->pp.queued_ut / USEC_PER_SEC + , rc->pp.dequeued_ut / USEC_PER_SEC + , rc->pp.executions + ); + } + + 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) { + if(!host->rrdctx) { + error("%s(): request for host '%s' that does not have rrdcontexts initialized.", __FUNCTION__, rrdhost_hostname(host)); + return HTTP_RESP_NOT_FOUND; + } + + 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) + rrdr_relative_window_to_absolute(&after, &before); + + 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((DICTIONARY_ITEM *)rca, 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) { + if(!host->rrdctx) { + error("%s(): request for host '%s' that does not have rrdcontexts initialized.", __FUNCTION__, rrdhost_hostname(host)); + return HTTP_RESP_NOT_FOUND; + } + + char node_uuid[UUID_STR_LEN] = ""; + + if(host->node_id) + uuid_unparse(*host->node_id, node_uuid); + + if(after != 0 && before != 0) + rrdr_relative_window_to_absolute(&after, &before); + + buffer_sprintf(wb, "{\n" + "\t\"hostname\": \"%s\"" + ",\n\t\"machine_guid\": \"%s\"" + ",\n\t\"node_id\": \"%s\"" + ",\n\t\"claim_id\": \"%s\"" + , rrdhost_hostname(host) + , 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->rrdlabels, 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; +} + +// ---------------------------------------------------------------------------- +// weights API + +static void metric_entry_insert_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *data __maybe_unused) { + struct metric_entry *t = value; + t->rca = rrdcontext_acquired_dup(t->rca); + t->ria = rrdinstance_acquired_dup(t->ria); + t->rma = rrdmetric_acquired_dup(t->rma); +} +static void metric_entry_delete_callback(const DICTIONARY_ITEM *item __maybe_unused, void *value, void *data __maybe_unused) { + struct metric_entry *t = value; + rrdcontext_release(t->rca); + rrdinstance_release(t->ria); + rrdmetric_release(t->rma); +} +static bool metric_entry_conflict_callback(const DICTIONARY_ITEM *item __maybe_unused, void *old_value __maybe_unused, void *new_value __maybe_unused, void *data __maybe_unused) { + fatal("RRDCONTEXT: %s() detected a conflict on a metric pointer!", __FUNCTION__); + return false; +} + +DICTIONARY *rrdcontext_all_metrics_to_dict(RRDHOST *host, SIMPLE_PATTERN *contexts) { + if(!host || !host->rrdctx) + return NULL; + + DICTIONARY *dict = dictionary_create(DICT_OPTION_SINGLE_THREADED|DICT_OPTION_DONT_OVERWRITE_VALUE); + dictionary_register_insert_callback(dict, metric_entry_insert_callback, NULL); + dictionary_register_delete_callback(dict, metric_entry_delete_callback, NULL); + dictionary_register_conflict_callback(dict, metric_entry_conflict_callback, NULL); + + RRDCONTEXT *rc; + dfe_start_reentrant((DICTIONARY *)host->rrdctx, rc) { + if(rrd_flag_is_deleted(rc)) + continue; + + if(contexts && !simple_pattern_matches(contexts, string2str(rc->id))) + continue; + + RRDINSTANCE *ri; + dfe_start_read(rc->rrdinstances, ri) { + if(rrd_flag_is_deleted(ri)) + continue; + + RRDMETRIC *rm; + dfe_start_read(ri->rrdmetrics, rm) { + if(rrd_flag_is_deleted(rm)) + continue; + + struct metric_entry tmp = { + .rca = (RRDCONTEXT_ACQUIRED *)rc_dfe.item, + .ria = (RRDINSTANCE_ACQUIRED *)ri_dfe.item, + .rma = (RRDMETRIC_ACQUIRED *)rm_dfe.item, + }; + + char buffer[20 + 1]; + ssize_t len = snprintfz(buffer, 20, "%p", rm); + dictionary_set_advanced(dict, buffer, len + 1, &tmp, sizeof(struct metric_entry), NULL); + } + dfe_done(rm); + } + dfe_done(ri); + } + dfe_done(rc); + + return dict; +} + +// ---------------------------------------------------------------------------- +// query API + +typedef struct query_target_locals { + time_t start_s; + + QUERY_TARGET *qt; + + RRDSET *st; + + const char *hosts; + const char *contexts; + const char *charts; + const char *dimensions; + const char *chart_label_key; + const char *charts_labels_filter; + + long long after; + long long before; + bool match_ids; + bool match_names; + + RRDHOST *host; + RRDCONTEXT_ACQUIRED *rca; + RRDINSTANCE_ACQUIRED *ria; + + size_t metrics_skipped_due_to_not_matching_timeframe; +} QUERY_TARGET_LOCALS; + +static __thread QUERY_TARGET thread_query_target = {}; +void query_target_release(QUERY_TARGET *qt) { + if(unlikely(!qt)) return; + if(unlikely(!qt->used)) return; + + simple_pattern_free(qt->hosts.pattern); + qt->hosts.pattern = NULL; + + simple_pattern_free(qt->contexts.pattern); + qt->contexts.pattern = NULL; + + simple_pattern_free(qt->instances.pattern); + qt->instances.pattern = NULL; + + simple_pattern_free(qt->instances.chart_label_key_pattern); + qt->instances.chart_label_key_pattern = NULL; + + simple_pattern_free(qt->instances.charts_labels_filter_pattern); + qt->instances.charts_labels_filter_pattern = NULL; + + simple_pattern_free(qt->query.pattern); + qt->query.pattern = NULL; + + // release the query + for(size_t i = 0, used = qt->query.used; i < used ;i++) { + string_freez(qt->query.array[i].dimension.id); + qt->query.array[i].dimension.id = NULL; + + string_freez(qt->query.array[i].dimension.name); + qt->query.array[i].dimension.name = NULL; + + string_freez(qt->query.array[i].chart.id); + qt->query.array[i].chart.id = NULL; + + string_freez(qt->query.array[i].chart.name); + qt->query.array[i].chart.name = NULL; + + for(size_t tier = 0; tier < storage_tiers ;tier++) { + if(qt->query.array[i].tiers[tier].db_metric_handle) { + STORAGE_ENGINE *eng = qt->query.array[i].tiers[tier].eng; + eng->api.metric_release(qt->query.array[i].tiers[tier].db_metric_handle); + qt->query.array[i].tiers[tier].db_metric_handle = NULL; + } + } + } + + // release the metrics + for(size_t i = 0, used = qt->metrics.used; i < used ;i++) { + rrdmetric_release(qt->metrics.array[i]); + qt->metrics.array[i] = NULL; + } + + // release the instances + for(size_t i = 0, used = qt->instances.used; i < used ;i++) { + rrdinstance_release(qt->instances.array[i]); + qt->instances.array[i] = NULL; + } + + // release the contexts + for(size_t i = 0, used = qt->contexts.used; i < used ;i++) { + rrdcontext_release(qt->contexts.array[i]); + qt->contexts.array[i] = NULL; + } + + // release the hosts + for(size_t i = 0, used = qt->hosts.used; i < used ;i++) { + qt->hosts.array[i] = NULL; + } + + qt->query.used = 0; + qt->metrics.used = 0; + qt->instances.used = 0; + qt->contexts.used = 0; + qt->hosts.used = 0; + + qt->db.minimum_latest_update_every = 0; + qt->db.first_time_t = 0; + qt->db.last_time_t = 0; + + qt->id[0] = '\0'; + + qt->used = false; +} +void query_target_free(void) { + if(thread_query_target.used) + query_target_release(&thread_query_target); + + freez(thread_query_target.query.array); + thread_query_target.query.array = NULL; + thread_query_target.query.size = 0; + + freez(thread_query_target.metrics.array); + thread_query_target.metrics.array = NULL; + thread_query_target.metrics.size = 0; + + freez(thread_query_target.instances.array); + thread_query_target.instances.array = NULL; + thread_query_target.instances.size = 0; + + freez(thread_query_target.contexts.array); + thread_query_target.contexts.array = NULL; + thread_query_target.contexts.size = 0; + + freez(thread_query_target.hosts.array); + thread_query_target.hosts.array = NULL; + thread_query_target.hosts.size = 0; +} + +static void query_target_add_metric(QUERY_TARGET_LOCALS *qtl, RRDMETRIC_ACQUIRED *rma, RRDINSTANCE *ri, + bool queryable_instance) { + QUERY_TARGET *qt = qtl->qt; + + RRDMETRIC *rm = rrdmetric_acquired_value(rma); + if(rrd_flag_is_deleted(rm)) + return; + + if(qt->metrics.used == qt->metrics.size) { + qt->metrics.size = (qt->metrics.size) ? qt->metrics.size * 2 : 1; + qt->metrics.array = reallocz(qt->metrics.array, qt->metrics.size * sizeof(RRDMETRIC_ACQUIRED *)); + } + qt->metrics.array[qt->metrics.used++] = rrdmetric_acquired_dup(rma); + + if(!queryable_instance) + return; + + time_t common_first_time_t = 0; + time_t common_last_time_t = 0; + time_t common_update_every = 0; + size_t tiers_added = 0; + struct { + STORAGE_ENGINE *eng; + STORAGE_METRIC_HANDLE *db_metric_handle; + time_t db_first_time_t; + time_t db_last_time_t; + time_t db_update_every; + } tier_retention[storage_tiers]; + + for (size_t tier = 0; tier < storage_tiers; tier++) { + STORAGE_ENGINE *eng = qtl->host->db[tier].eng; + tier_retention[tier].eng = eng; + tier_retention[tier].db_update_every = (time_t) (qtl->host->db[tier].tier_grouping * ri->update_every); + + if(rm->rrddim && rm->rrddim->tiers[tier] && rm->rrddim->tiers[tier]->db_metric_handle) + tier_retention[tier].db_metric_handle = eng->api.metric_dup(rm->rrddim->tiers[tier]->db_metric_handle); + else + tier_retention[tier].db_metric_handle = eng->api.metric_get(qtl->host->db[tier].instance, &rm->uuid); + + if(tier_retention[tier].db_metric_handle) { + tier_retention[tier].db_first_time_t = tier_retention[tier].eng->api.query_ops.oldest_time(tier_retention[tier].db_metric_handle); + tier_retention[tier].db_last_time_t = tier_retention[tier].eng->api.query_ops.latest_time(tier_retention[tier].db_metric_handle); + + if(!common_first_time_t) + common_first_time_t = tier_retention[tier].db_first_time_t; + else if(tier_retention[tier].db_first_time_t) + common_first_time_t = MIN(common_first_time_t, tier_retention[tier].db_first_time_t); + + if(!common_last_time_t) + common_last_time_t = tier_retention[tier].db_last_time_t; + else + common_last_time_t = MAX(common_last_time_t, tier_retention[tier].db_last_time_t); + + if(!common_update_every) + common_update_every = tier_retention[tier].db_update_every; + else if(tier_retention[tier].db_update_every) + common_update_every = MIN(common_update_every, tier_retention[tier].db_update_every); + + tiers_added++; + } + else { + tier_retention[tier].db_first_time_t = 0; + tier_retention[tier].db_last_time_t = 0; + tier_retention[tier].db_update_every = 0; + } + } + + bool release_retention = true; + bool timeframe_matches = + (tiers_added + && (common_first_time_t - common_update_every * 2) <= qt->window.before + && (common_last_time_t + common_update_every * 2) >= qt->window.after + ) ? true : false; + + if(timeframe_matches) { + RRDR_DIMENSION_FLAGS options = RRDR_DIMENSION_DEFAULT; + + if (rrd_flag_check(rm, RRD_FLAG_HIDDEN) + || (rm->rrddim && rrddim_option_check(rm->rrddim, RRDDIM_OPTION_HIDDEN))) { + options |= RRDR_DIMENSION_HIDDEN; + options &= ~RRDR_DIMENSION_SELECTED; + } + + if (qt->query.pattern) { + // we have a dimensions pattern + // lets see if this dimension is selected + + if ((qtl->match_ids && simple_pattern_matches(qt->query.pattern, string2str(rm->id))) + || (qtl->match_names && simple_pattern_matches(qt->query.pattern, string2str(rm->name))) + ) { + // it matches the pattern + options |= (RRDR_DIMENSION_SELECTED | RRDR_DIMENSION_NONZERO); + options &= ~RRDR_DIMENSION_HIDDEN; + } + else { + // it does not match the pattern + options |= RRDR_DIMENSION_HIDDEN; + options &= ~RRDR_DIMENSION_SELECTED; + } + } + else { + // we don't have a dimensions pattern + // so this is a selected dimension + // if it is not hidden + if(!(options & RRDR_DIMENSION_HIDDEN)) + options |= RRDR_DIMENSION_SELECTED; + } + + if((options & RRDR_DIMENSION_HIDDEN) && (options & RRDR_DIMENSION_SELECTED)) + options &= ~RRDR_DIMENSION_HIDDEN; + + if(!(options & RRDR_DIMENSION_HIDDEN) || (qt->request.options & RRDR_OPTION_PERCENTAGE)) { + // we have a non-hidden dimension + // let's add it to the query metrics + + if(ri->rrdset) + ri->rrdset->last_accessed_time = qtl->start_s; + + if (qt->query.used == qt->query.size) { + qt->query.size = (qt->query.size) ? qt->query.size * 2 : 1; + qt->query.array = reallocz(qt->query.array, qt->query.size * sizeof(QUERY_METRIC)); + } + QUERY_METRIC *qm = &qt->query.array[qt->query.used++]; + + qm->dimension.options = options; + + qm->link.host = qtl->host; + qm->link.rca = qtl->rca; + qm->link.ria = qtl->ria; + qm->link.rma = rma; + + qm->chart.id = string_dup(ri->id); + qm->chart.name = string_dup(ri->name); + + qm->dimension.id = string_dup(rm->id); + qm->dimension.name = string_dup(rm->name); + + if (!qt->db.first_time_t || common_first_time_t < qt->db.first_time_t) + qt->db.first_time_t = common_first_time_t; + + if (!qt->db.last_time_t || common_last_time_t > qt->db.last_time_t) + qt->db.last_time_t = common_last_time_t; + + for (size_t tier = 0; tier < storage_tiers; tier++) { + qm->tiers[tier].eng = tier_retention[tier].eng; + qm->tiers[tier].db_metric_handle = tier_retention[tier].db_metric_handle; + qm->tiers[tier].db_first_time_t = tier_retention[tier].db_first_time_t; + qm->tiers[tier].db_last_time_t = tier_retention[tier].db_last_time_t; + qm->tiers[tier].db_update_every = tier_retention[tier].db_update_every; + } + release_retention = false; + } + } + else + qtl->metrics_skipped_due_to_not_matching_timeframe++; + + if(release_retention) { + // cleanup anything we allocated to the retention we will not use + for(size_t tier = 0; tier < storage_tiers ;tier++) { + if (tier_retention[tier].db_metric_handle) + tier_retention[tier].eng->api.metric_release(tier_retention[tier].db_metric_handle); + } + } +} + +static void query_target_add_instance(QUERY_TARGET_LOCALS *qtl, RRDINSTANCE_ACQUIRED *ria, bool queryable_instance) { + QUERY_TARGET *qt = qtl->qt; + + RRDINSTANCE *ri = rrdinstance_acquired_value(ria); + if(rrd_flag_is_deleted(ri)) + return; + + if(qt->instances.used == qt->instances.size) { + qt->instances.size = (qt->instances.size) ? qt->instances.size * 2 : 1; + qt->instances.array = reallocz(qt->instances.array, qt->instances.size * sizeof(RRDINSTANCE_ACQUIRED *)); + } + + qtl->ria = qt->instances.array[qt->instances.used++] = rrdinstance_acquired_dup(ria); + + if(qt->db.minimum_latest_update_every == 0 || ri->update_every < qt->db.minimum_latest_update_every) + qt->db.minimum_latest_update_every = ri->update_every; + + if(queryable_instance) { + if ((qt->instances.chart_label_key_pattern && !rrdlabels_match_simple_pattern_parsed(ri->rrdlabels, qt->instances.chart_label_key_pattern, ':')) || + (qt->instances.charts_labels_filter_pattern && !rrdlabels_match_simple_pattern_parsed(ri->rrdlabels, qt->instances.charts_labels_filter_pattern, ':'))) + queryable_instance = false; + } + + size_t added = 0; + + if(unlikely(qt->request.rma)) { + query_target_add_metric(qtl, qt->request.rma, ri, queryable_instance); + added++; + } + else { + RRDMETRIC *rm; + dfe_start_read(ri->rrdmetrics, rm) { + query_target_add_metric(qtl, (RRDMETRIC_ACQUIRED *) rm_dfe.item, ri, queryable_instance); + added++; + } + dfe_done(rm); + } + + if(!added) { + qt->instances.used--; + rrdinstance_release(ria); + } +} + +static void query_target_add_context(QUERY_TARGET_LOCALS *qtl, RRDCONTEXT_ACQUIRED *rca) { + QUERY_TARGET *qt = qtl->qt; + + RRDCONTEXT *rc = rrdcontext_acquired_value(rca); + if(rrd_flag_is_deleted(rc)) + return; + + if(qt->contexts.used == qt->contexts.size) { + qt->contexts.size = (qt->contexts.size) ? qt->contexts.size * 2 : 1; + qt->contexts.array = reallocz(qt->contexts.array, qt->contexts.size * sizeof(RRDCONTEXT_ACQUIRED *)); + } + qtl->rca = qt->contexts.array[qt->contexts.used++] = rrdcontext_acquired_dup(rca); + + size_t added = 0; + if(unlikely(qt->request.ria)) { + query_target_add_instance(qtl, qt->request.ria, true); + added++; + } + else if(unlikely(qtl->st && qtl->st->rrdcontext == rca && qtl->st->rrdinstance)) { + query_target_add_instance(qtl, qtl->st->rrdinstance, true); + added++; + } + else { + RRDINSTANCE *ri; + dfe_start_read(rc->rrdinstances, ri) { + bool queryable_instance = false; + if(!qt->instances.pattern + || (qtl->match_ids && simple_pattern_matches(qt->instances.pattern, string2str(ri->id))) + || (qtl->match_names && simple_pattern_matches(qt->instances.pattern, string2str(ri->name))) + ) + queryable_instance = true; + + query_target_add_instance(qtl, (RRDINSTANCE_ACQUIRED *)ri_dfe.item, queryable_instance); + added++; + } + dfe_done(ri); + } + + if(!added) { + qt->contexts.used--; + rrdcontext_release(rca); + } +} + +static void query_target_add_host(QUERY_TARGET_LOCALS *qtl, RRDHOST *host) { + QUERY_TARGET *qt = qtl->qt; + + if(qt->hosts.used == qt->hosts.size) { + qt->hosts.size = (qt->hosts.size) ? qt->hosts.size * 2 : 1; + qt->hosts.array = reallocz(qt->hosts.array, qt->hosts.size * sizeof(RRDHOST *)); + } + qtl->host = qt->hosts.array[qt->hosts.used++] = host; + + // is the chart given valid? + if(unlikely(qtl->st && (!qtl->st->rrdinstance || !qtl->st->rrdcontext))) { + error("QUERY TARGET: RRDSET '%s' given, because it is not linked to rrdcontext structures. Switching to context query.", rrdset_name(qtl->st)); + + if(!is_valid_sp(qtl->charts)) + qtl->charts = rrdset_name(qtl->st); + + qtl->st = NULL; + } + + size_t added = 0; + if(unlikely(qt->request.rca)) { + query_target_add_context(qtl, qt->request.rca); + added++; + } + else if(unlikely(qtl->st)) { + // single chart data queries + query_target_add_context(qtl, qtl->st->rrdcontext); + added++; + } + else { + // context pattern queries + RRDCONTEXT_ACQUIRED *rca = (RRDCONTEXT_ACQUIRED *)dictionary_get_and_acquire_item((DICTIONARY *)qtl->host->rrdctx, qtl->contexts); + if(likely(rca)) { + // we found it! + query_target_add_context(qtl, rca); + rrdcontext_release(rca); + added++; + } + else { + // Probably it is a pattern, we need to search for it... + RRDCONTEXT *rc; + dfe_start_read((DICTIONARY *)qtl->host->rrdctx, rc) { + if(qt->contexts.pattern && !simple_pattern_matches(qt->contexts.pattern, string2str(rc->id))) + continue; + + query_target_add_context(qtl, (RRDCONTEXT_ACQUIRED *)rc_dfe.item); + added++; + } + dfe_done(rc); + } + } + + if(!added) { + qt->hosts.used--; + } +} + +void query_target_generate_name(QUERY_TARGET *qt) { + char options_buffer[100 + 1]; + web_client_api_request_v1_data_options_to_string(options_buffer, 100, qt->request.options); + + char resampling_buffer[20 + 1] = ""; + if(qt->request.resampling_time > 1) + snprintfz(resampling_buffer, 20, "/resampling:%lld", (long long)qt->request.resampling_time); + + char tier_buffer[20 + 1] = ""; + if(qt->request.options & RRDR_OPTION_SELECTED_TIER) + snprintfz(tier_buffer, 20, "/tier:%zu", qt->request.tier); + + if(qt->request.st) + snprintfz(qt->id, MAX_QUERY_TARGET_ID_LENGTH, "chart://host:%s/instance:%s/dimensions:%s/after:%lld/before:%lld/points:%zu/group:%s%s/options:%s%s%s" + , rrdhost_hostname(qt->request.st->rrdhost) + , rrdset_name(qt->request.st) + , (qt->request.dimensions) ? qt->request.dimensions : "*" + , (long long)qt->request.after + , (long long)qt->request.before + , qt->request.points + , web_client_api_request_v1_data_group_to_string(qt->request.group_method) + , qt->request.group_options?qt->request.group_options:"" + , options_buffer + , resampling_buffer + , tier_buffer + ); + else if(qt->request.host && qt->request.rca && qt->request.ria && qt->request.rma) + snprintfz(qt->id, MAX_QUERY_TARGET_ID_LENGTH, "metric://host:%s/context:%s/instance:%s/dimension:%s/after:%lld/before:%lld/points:%zu/group:%s%s/options:%s%s%s" + , rrdhost_hostname(qt->request.host) + , rrdcontext_acquired_id(qt->request.rca) + , rrdinstance_acquired_id(qt->request.ria) + , rrdmetric_acquired_id(qt->request.rma) + , (long long)qt->request.after + , (long long)qt->request.before + , qt->request.points + , web_client_api_request_v1_data_group_to_string(qt->request.group_method) + , qt->request.group_options?qt->request.group_options:"" + , options_buffer + , resampling_buffer + , tier_buffer + ); + else + snprintfz(qt->id, MAX_QUERY_TARGET_ID_LENGTH, "context://host:%s/contexts:%s/instances:%s/dimensions:%s/after:%lld/before:%lld/points:%zu/group:%s%s/options:%s%s%s" + , (qt->request.host) ? rrdhost_hostname(qt->request.host) : ((qt->request.hosts) ? qt->request.hosts : "*") + , (qt->request.contexts) ? qt->request.contexts : "*" + , (qt->request.charts) ? qt->request.charts : "*" + , (qt->request.dimensions) ? qt->request.dimensions : "*" + , (long long)qt->request.after + , (long long)qt->request.before + , qt->request.points + , web_client_api_request_v1_data_group_to_string(qt->request.group_method) + , qt->request.group_options?qt->request.group_options:"" + , options_buffer + , resampling_buffer + , tier_buffer + ); + + json_fix_string(qt->id); +} + +QUERY_TARGET *query_target_create(QUERY_TARGET_REQUEST *qtr) { + QUERY_TARGET *qt = &thread_query_target; + + if(qt->used) + fatal("QUERY TARGET: this query target is already used (%zu queries made with this QUERY_TARGET so far).", qt->queries); + + qt->used = true; + qt->queries++; + + // copy the request into query_thread_target + qt->request = *qtr; + + query_target_generate_name(qt); + qt->window.after = qt->request.after; + qt->window.before = qt->request.before; + rrdr_relative_window_to_absolute(&qt->window.after, &qt->window.before); + + // prepare our local variables - we need these across all these functions + QUERY_TARGET_LOCALS qtl = { + .qt = qt, + .start_s = now_realtime_sec(), + .host = qt->request.host, + .st = qt->request.st, + .hosts = qt->request.hosts, + .contexts = qt->request.contexts, + .charts = qt->request.charts, + .dimensions = qt->request.dimensions, + .chart_label_key = qt->request.chart_label_key, + .charts_labels_filter = qt->request.charts_labels_filter, + }; + + qt->db.minimum_latest_update_every = 0; // it will be updated by query_target_add_query() + + // prepare all the patterns + qt->hosts.pattern = is_valid_sp(qtl.hosts) ? simple_pattern_create(qtl.hosts, ",|\t\r\n\f\v", SIMPLE_PATTERN_EXACT) : NULL; + qt->contexts.pattern = is_valid_sp(qtl.contexts) ? simple_pattern_create(qtl.contexts, ",|\t\r\n\f\v", SIMPLE_PATTERN_EXACT) : NULL; + qt->instances.pattern = is_valid_sp(qtl.charts) ? simple_pattern_create(qtl.charts, ",|\t\r\n\f\v", SIMPLE_PATTERN_EXACT) : NULL; + qt->query.pattern = is_valid_sp(qtl.dimensions) ? simple_pattern_create(qtl.dimensions, ",|\t\r\n\f\v", SIMPLE_PATTERN_EXACT) : NULL; + qt->instances.chart_label_key_pattern = is_valid_sp(qtl.chart_label_key) ? simple_pattern_create(qtl.chart_label_key, ",|\t\r\n\f\v", SIMPLE_PATTERN_EXACT) : NULL; + qt->instances.charts_labels_filter_pattern = is_valid_sp(qtl.charts_labels_filter) ? simple_pattern_create(qtl.charts_labels_filter, ",|\t\r\n\f\v", SIMPLE_PATTERN_EXACT) : NULL; + + qtl.match_ids = qt->request.options & RRDR_OPTION_MATCH_IDS; + qtl.match_names = qt->request.options & RRDR_OPTION_MATCH_NAMES; + if(likely(!qtl.match_ids && !qtl.match_names)) + qtl.match_ids = qtl.match_names = true; + + // verify that the chart belongs to the host we are interested + if(qtl.st) { + if (!qtl.host) { + // It is NULL, set it ourselves. + qtl.host = qtl.st->rrdhost; + } + else if (unlikely(qtl.host != qtl.st->rrdhost)) { + // Oops! A different host! + error("QUERY TARGET: RRDSET '%s' given does not belong to host '%s'. Switching query host to '%s'", + rrdset_name(qtl.st), rrdhost_hostname(qtl.host), rrdhost_hostname(qtl.st->rrdhost)); + qtl.host = qtl.st->rrdhost; + } + } + + if(qtl.host) { + // single host query + query_target_add_host(&qtl, qtl.host); + qtl.hosts = rrdhost_hostname(qtl.host); + } + else { + // multi host query + rrd_rdlock(); + rrdhost_foreach_read(qtl.host) { + if(!qt->hosts.pattern || simple_pattern_matches(qt->hosts.pattern, rrdhost_hostname(qtl.host))) + query_target_add_host(&qtl, qtl.host); + } + rrd_unlock(); + } + + // make sure everything is good + if(!qt->query.used || !qt->metrics.used || !qt->instances.used || !qt->contexts.used || !qt->hosts.used) { + internal_error( + true + , "QUERY TARGET: query '%s' does not have all the data required. " + "Matched %u hosts, %u contexts, %u instances, %u dimensions, %u metrics to query, " + "%zu metrics skipped because they don't have data in the desired time-frame. " + "Aborting it." + , qt->id + , qt->hosts.used + , qt->contexts.used + , qt->instances.used + , qt->metrics.used + , qt->query.used + , qtl.metrics_skipped_due_to_not_matching_timeframe + ); + + query_target_release(qt); + return NULL; + } + + if(!query_target_calculate_window(qt)) { + query_target_release(qt); + return NULL; + } + + return qt; +} + + +// ---------------------------------------------------------------------------- +// 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, // no need for atomic + }; + if(sd->hidden) trm.flags |= RRD_FLAG_HIDDEN; + + 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_UPDATE_REASON_LOAD_SQL, // no need for atomics + .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_UPDATE_REASON_LOAD_SQL, // no need for atomics + }; + 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); + rrdinstance_trigger_updates(ri, __FUNCTION__ ); + 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_UPDATE_REASON_LOAD_SQL, // no need for atomics + + // 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(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) { + rrdcontext_trigger_updates(rc, __FUNCTION__ ); + } + dfe_done(rc); + + rrdcontext_garbage_collect_single_host(host, false); +} + +// ---------------------------------------------------------------------------- +// version hash calculation + +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(rrd_flag_check(rc, RRD_FLAG_HIDDEN))) { + rrdcontext_unlock(rc); + continue; + } + + if(unlikely(callback)) + callback(rc, snapshot, bundle); + + // skip any deleted contexts + if(unlikely(rrd_flag_is_deleted(rc))) { + 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; +} + +// ---------------------------------------------------------------------------- +// retention recalculation + +static void rrdcontext_recalculate_context_retention(RRDCONTEXT *rc, RRD_FLAGS reason, bool worker_jobs) { + rrdcontext_post_process_updates(rc, true, reason, worker_jobs); +} + +static void rrdcontext_recalculate_host_retention(RRDHOST *host, RRD_FLAGS reason, bool worker_jobs) { + if(unlikely(!host || !host->rrdctx)) return; + + RRDCONTEXT *rc; + dfe_start_read((DICTIONARY *)host->rrdctx, rc) { + rrdcontext_recalculate_context_retention(rc, reason, worker_jobs); + } + dfe_done(rc); +} + +static void rrdcontext_recalculate_retention_all_hosts(void) { + rrdcontext_next_db_rotation_ut = 0; + rrd_rdlock(); + RRDHOST *host; + rrdhost_foreach_read(host) { + worker_is_busy(WORKER_JOB_RETENTION); + rrdcontext_recalculate_host_retention(host, RRD_FLAG_UPDATE_REASON_DB_ROTATION, true); + } + rrd_unlock(); +} + +// ---------------------------------------------------------------------------- +// garbage collector + +static bool 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 if (dbengine_enabled) { + RRDHOST *rrdhost = rm->ri->rc->rrdhost; + for (size_t tier = 0; tier < storage_tiers; tier++) { + if(!rrdhost->db[tier].instance) continue; + + time_t first_time_t, last_time_t; + if (rrdeng_metric_retention_by_uuid(rrdhost->db[tier].instance, &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; + } + } + } + else { + // cannot get retention + return false; + } +#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); + + rrd_flag_set(rm, RRD_FLAG_LIVE_RETENTION); + + return true; +} + +static inline bool rrdmetric_should_be_deleted(RRDMETRIC *rm) { + if(likely(!rrd_flag_check(rm, RRD_FLAGS_REQUIRED_FOR_DELETIONS))) + return false; + + if(likely(rrd_flag_check(rm, RRD_FLAGS_PREVENTING_DELETIONS))) + return false; + + if(likely(rm->rrddim)) + return false; + + rrdmetric_update_retention(rm); + if(rm->first_time_t || rm->last_time_t) + return false; + + return true; +} + +static inline bool rrdinstance_should_be_deleted(RRDINSTANCE *ri) { + if(likely(!rrd_flag_check(ri, RRD_FLAGS_REQUIRED_FOR_DELETIONS))) + return false; + + if(likely(rrd_flag_check(ri, RRD_FLAGS_PREVENTING_DELETIONS))) + return false; + + if(likely(ri->rrdset)) + return false; + + if(unlikely(dictionary_referenced_items(ri->rrdmetrics) != 0)) + return false; + + if(unlikely(dictionary_entries(ri->rrdmetrics) != 0)) + return false; + + if(ri->first_time_t || ri->last_time_t) + return false; + + return true; +} + +static inline bool rrdcontext_should_be_deleted(RRDCONTEXT *rc) { + if(likely(!rrd_flag_check(rc, RRD_FLAGS_REQUIRED_FOR_DELETIONS))) + return false; + + if(likely(rrd_flag_check(rc, RRD_FLAGS_PREVENTING_DELETIONS))) + return false; + + if(unlikely(dictionary_referenced_items(rc->rrdinstances) != 0)) + return false; + + if(unlikely(dictionary_entries(rc->rrdinstances) != 0)) + return false; + + if(unlikely(rc->first_time_t || rc->last_time_t)) + return false; + + return true; +} + +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 %"PRIu64" from SQL.", rc->hub.id, rc->hub.version); +} + +static void rrdcontext_garbage_collect_single_host(RRDHOST *host, bool worker_jobs) { + + internal_error(true, "RRDCONTEXT: garbage collecting context structures of host '%s'", rrdhost_hostname(host)); + + RRDCONTEXT *rc; + dfe_start_reentrant((DICTIONARY *)host->rrdctx, rc) { + if(unlikely(netdata_exit)) break; + + if(worker_jobs) worker_is_busy(WORKER_JOB_CLEANUP); + + rrdcontext_lock(rc); + + RRDINSTANCE *ri; + dfe_start_reentrant(rc->rrdinstances, ri) { + if(unlikely(netdata_exit)) break; + + RRDMETRIC *rm; + dfe_start_write(ri->rrdmetrics, rm) { + if(rrdmetric_should_be_deleted(rm)) { + if(worker_jobs) worker_is_busy(WORKER_JOB_CLEANUP_DELETE); + if(!dictionary_del(ri->rrdmetrics, string2str(rm->id))) + error("RRDCONTEXT: metric '%s' of instance '%s' of context '%s' of host '%s', failed to be deleted from rrdmetrics dictionary.", + string2str(rm->id), + string2str(ri->id), + string2str(rc->id), + rrdhost_hostname(host)); + else + internal_error( + true, + "RRDCONTEXT: metric '%s' of instance '%s' of context '%s' of host '%s', deleted from rrdmetrics dictionary.", + string2str(rm->id), + string2str(ri->id), + string2str(rc->id), + rrdhost_hostname(host)); + } + } + dfe_done(rm); + + if(rrdinstance_should_be_deleted(ri)) { + if(worker_jobs) worker_is_busy(WORKER_JOB_CLEANUP_DELETE); + if(!dictionary_del(rc->rrdinstances, string2str(ri->id))) + error("RRDCONTEXT: instance '%s' of context '%s' of host '%s', failed to be deleted from rrdmetrics dictionary.", + string2str(ri->id), + string2str(rc->id), + rrdhost_hostname(host)); + else + internal_error( + true, + "RRDCONTEXT: instance '%s' of context '%s' of host '%s', deleted from rrdmetrics dictionary.", + string2str(ri->id), + string2str(rc->id), + rrdhost_hostname(host)); + } + } + dfe_done(ri); + + if(unlikely(rrdcontext_should_be_deleted(rc))) { + if(worker_jobs) worker_is_busy(WORKER_JOB_CLEANUP_DELETE); + rrdcontext_dequeue_from_post_processing(rc); + rrdcontext_delete_from_sql_unsafe(rc); + + if(!dictionary_del((DICTIONARY *)host->rrdctx, string2str(rc->id))) + error("RRDCONTEXT: context '%s' of host '%s', failed to be deleted from rrdmetrics dictionary.", + string2str(rc->id), + rrdhost_hostname(host)); + else + internal_error( + true, + "RRDCONTEXT: context '%s' of host '%s', deleted from rrdmetrics dictionary.", + string2str(rc->id), + rrdhost_hostname(host)); + } + + // 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); +} + +static void rrdcontext_garbage_collect_for_all_hosts(void) { + rrd_rdlock(); + RRDHOST *host; + rrdhost_foreach_read(host) { + rrdcontext_garbage_collect_single_host(host, true); + } + rrd_unlock(); +} + +// ---------------------------------------------------------------------------- +// post processing + +static void rrdmetric_process_updates(RRDMETRIC *rm, bool force, RRD_FLAGS reason, bool worker_jobs) { + if(reason != RRD_FLAG_NONE) + rrd_flag_set_updated(rm, reason); + + if(!force && !rrd_flag_is_updated(rm) && rrd_flag_check(rm, RRD_FLAG_LIVE_RETENTION) && !rrd_flag_check(rm, RRD_FLAG_UPDATE_REASON_UPDATE_RETENTION)) + return; + + if(worker_jobs) + worker_is_busy(WORKER_JOB_PP_METRIC); + + if(reason & RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD) { + rrd_flag_set_archived(rm); + rrd_flag_set(rm, RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD); + } + if(rrd_flag_is_deleted(rm) && (reason & RRD_FLAG_UPDATE_REASON_UPDATE_RETENTION)) + rrd_flag_set_archived(rm); + + rrdmetric_update_retention(rm); + + rrd_flag_unset_updated(rm); +} + +static void rrdinstance_post_process_updates(RRDINSTANCE *ri, bool force, RRD_FLAGS reason, bool worker_jobs) { + if(reason != RRD_FLAG_NONE) + rrd_flag_set_updated(ri, reason); + + if(!force && !rrd_flag_is_updated(ri) && rrd_flag_check(ri, RRD_FLAG_LIVE_RETENTION)) + return; + + if(worker_jobs) + worker_is_busy(WORKER_JOB_PP_INSTANCE); + + 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; + if(dictionary_entries(ri->rrdmetrics) > 0) { + RRDMETRIC *rm; + dfe_start_read((DICTIONARY *)ri->rrdmetrics, rm) { + if(unlikely(netdata_exit)) break; + + RRD_FLAGS reason_to_pass = reason; + if(rrd_flag_check(ri, RRD_FLAG_UPDATE_REASON_UPDATE_RETENTION)) + reason_to_pass |= RRD_FLAG_UPDATE_REASON_UPDATE_RETENTION; + + rrdmetric_process_updates(rm, force, reason_to_pass, worker_jobs); + + if(unlikely(!rrd_flag_check(rm, RRD_FLAG_LIVE_RETENTION))) + live_retention = false; + + if (unlikely((rrdmetric_should_be_deleted(rm)))) { + metrics_deleted++; + continue; + } + + if(!currently_collected && rrd_flag_check(rm, RRD_FLAG_COLLECTED) && rm->first_time_t) + 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; + } + dfe_done(rm); + } + + if(unlikely(live_retention && !rrd_flag_check(ri, RRD_FLAG_LIVE_RETENTION))) + rrd_flag_set(ri, RRD_FLAG_LIVE_RETENTION); + else if(unlikely(!live_retention && rrd_flag_check(ri, RRD_FLAG_LIVE_RETENTION))) + rrd_flag_clear(ri, 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(likely(live_retention)) + rrd_flag_set_deleted(ri, RRD_FLAG_UPDATE_REASON_ZERO_RETENTION); + } + else { + rrd_flag_clear(ri, 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); + } + } + + rrd_flag_unset_updated(ri); +} + +static void rrdcontext_post_process_updates(RRDCONTEXT *rc, bool force, RRD_FLAGS reason, bool worker_jobs) { + if(reason != RRD_FLAG_NONE) + rrd_flag_set_updated(rc, reason); + + if(worker_jobs) + worker_is_busy(WORKER_JOB_PP_CONTEXT); + + 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; + if(dictionary_entries(rc->rrdinstances) > 0) { + RRDINSTANCE *ri; + dfe_start_reentrant(rc->rrdinstances, ri) { + if(unlikely(netdata_exit)) break; + + RRD_FLAGS reason_to_pass = reason; + if(rrd_flag_check(rc, RRD_FLAG_UPDATE_REASON_UPDATE_RETENTION)) + reason_to_pass |= RRD_FLAG_UPDATE_REASON_UPDATE_RETENTION; + + rrdinstance_post_process_updates(ri, force, reason_to_pass, worker_jobs); + + if(unlikely(hidden && !rrd_flag_check(ri, RRD_FLAG_HIDDEN))) + hidden = false; + + if(unlikely(live_retention && !rrd_flag_check(ri, RRD_FLAG_LIVE_RETENTION))) + live_retention = false; + + if (unlikely(rrdinstance_should_be_deleted(ri))) { + instances_deleted++; + continue; + } + + if(unlikely(!currently_collected && rrd_flag_is_collected(ri) && ri->first_time_t)) + 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; + } + dfe_done(ri); + } + + { + bool previous_hidden = rrd_flag_check(rc, RRD_FLAG_HIDDEN); + if (hidden != previous_hidden) { + if (hidden && !rrd_flag_check(rc, RRD_FLAG_HIDDEN)) + rrd_flag_set(rc, RRD_FLAG_HIDDEN); + else if (!hidden && rrd_flag_check(rc, RRD_FLAG_HIDDEN)) + rrd_flag_clear(rc, RRD_FLAG_HIDDEN); + } + + bool previous_live_retention = rrd_flag_check(rc, RRD_FLAG_LIVE_RETENTION); + if (live_retention != previous_live_retention) { + if (live_retention && !rrd_flag_check(rc, RRD_FLAG_LIVE_RETENTION)) + rrd_flag_set(rc, RRD_FLAG_LIVE_RETENTION); + else if (!live_retention && rrd_flag_check(rc, RRD_FLAG_LIVE_RETENTION)) + rrd_flag_clear(rc, RRD_FLAG_LIVE_RETENTION); + } + } + + rrdcontext_lock(rc); + rc->pp.executions++; + + 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 { + rrd_flag_clear(rc, 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_METADATA); + } + } + + if(unlikely(rrd_flag_is_updated(rc) && rc->rrdhost->rrdctx_hub_queue)) { + if(check_if_cloud_version_changed_unsafe(rc, false)) { + rc->version = rrdcontext_get_next_version(rc); + dictionary_set((DICTIONARY *)rc->rrdhost->rrdctx_hub_queue, + string2str(rc->id), rc, sizeof(*rc)); + } + } + + rrd_flag_unset_updated(rc); + rrdcontext_unlock(rc); +} + +static void rrdcontext_queue_for_post_processing(RRDCONTEXT *rc, const char *function __maybe_unused, RRD_FLAGS flags __maybe_unused) { + if(unlikely(!rc->rrdhost->rrdctx_post_processing_queue)) return; + + if(!rrd_flag_check(rc, RRD_FLAG_QUEUED_FOR_PP)) { + dictionary_set((DICTIONARY *)rc->rrdhost->rrdctx_post_processing_queue, + string2str(rc->id), + rc, + sizeof(*rc)); + +#if(defined(NETDATA_INTERNAL_CHECKS) && defined(LOG_POST_PROCESSING_QUEUE_INSERTIONS)) + { + BUFFER *wb_flags = buffer_create(1000); + rrd_flags_to_buffer(flags, wb_flags); + + BUFFER *wb_reasons = buffer_create(1000); + rrd_reasons_to_buffer(flags, wb_reasons); + + internal_error(true, "RRDCONTEXT: '%s' update triggered by function %s(), due to flags: %s, reasons: %s", + string2str(rc->id), function, + buffer_tostring(wb_flags), + buffer_tostring(wb_reasons)); + + buffer_free(wb_reasons); + buffer_free(wb_flags); + } +#endif + } +} + +static void rrdcontext_dequeue_from_post_processing(RRDCONTEXT *rc) { + if(unlikely(!rc->rrdhost->rrdctx_post_processing_queue)) return; + dictionary_del((DICTIONARY *)rc->rrdhost->rrdctx_post_processing_queue, string2str(rc->id)); +} + +static void rrdcontext_post_process_queued_contexts(RRDHOST *host) { + if(unlikely(!host->rrdctx_post_processing_queue)) return; + + RRDCONTEXT *rc; + dfe_start_reentrant((DICTIONARY *)host->rrdctx_post_processing_queue, rc) { + if(unlikely(netdata_exit)) break; + + rrdcontext_dequeue_from_post_processing(rc); + rrdcontext_post_process_updates(rc, false, RRD_FLAG_NONE, true); + } + dfe_done(rc); +} + +// ---------------------------------------------------------------------------- +// dispatching contexts to cloud + +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 = rrd_flag_is_deleted(rc) ? 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(!rrd_flag_check(rc, 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(rrd_flag_is_deleted(rc)) + 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 %"PRIu64" 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; + + RRD_FLAGS flags = rrd_flags_get(rc); + + 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)((flags & RRD_FLAG_COLLECTED) ? 0 : rc->last_time_t) != rc->hub.last_time_t)) + last_time_changed = true; + + if(unlikely(((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(LOG_TRANSITIONS, + "RRDCONTEXT: %s NEW VERSION '%s'%s of host '%s', version %"PRIu64", 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)" : "", + rrdhost_hostname(rc->rrdhost), + 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)" : "", + (flags & RRD_FLAG_COLLECTED) ? 0 : rc->last_time_t, last_time_changed ? " (CHANGED)" : "", + (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_MS : 0 + ); + + return true; + } + + return false; +} + +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; +} + +static void rrdcontext_dequeue_from_hub_queue(RRDCONTEXT *rc) { + dictionary_del((DICTIONARY *)rc->rrdhost->rrdctx_hub_queue, string2str(rc->id)); +} + +static void rrdcontext_dispatch_queued_contexts_to_hub(RRDHOST *host, usec_t now_ut) { + + // check if we have received a streaming command for this host + if(!rrdhost_flag_check(host, RRDHOST_FLAG_ACLK_STREAM_CONTEXTS) || !aclk_connected || !host->rrdctx_hub_queue) + return; + + // check if there are queued items to send + if(!dictionary_entries((DICTIONARY *)host->rrdctx_hub_queue)) + return; + + if(!host->node_id) + return; + + size_t messages_added = 0; + contexts_updated_t bundle = NULL; + + RRDCONTEXT *rc; + dfe_start_reentrant((DICTIONARY *)host->rrdctx_hub_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.dispatches++; + rc->queue.dequeued_ut = now_ut; + } + else + rc->version = rc->hub.version; + + // remove it from the queue + worker_is_busy(WORKER_JOB_DEQUEUE); + rrdcontext_dequeue_from_hub_queue(rc); + + if(unlikely(rrdcontext_should_be_deleted(rc))) { + // this is a deleted context - delete it forever... + + worker_is_busy(WORKER_JOB_CLEANUP_DELETE); + + rrdcontext_dequeue_from_post_processing(rc); + 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))) + error("RRDCONTEXT: '%s' of host '%s' failed to be deleted from rrdcontext dictionary.", + string2str(id), rrdhost_hostname(host)); + + 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 + +} + +// ---------------------------------------------------------------------------- +// worker thread + +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 + worker_unregister(); + + static_thread->enabled = NETDATA_MAIN_THREAD_EXITED; +} + +void *rrdcontext_main(void *ptr) { + netdata_thread_cleanup_push(rrdcontext_main_cleanup, ptr); + + 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, "deduplicated 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"); + worker_register_job_name(WORKER_JOB_PP_METRIC, "check metrics"); + worker_register_job_name(WORKER_JOB_PP_INSTANCE, "check instances"); + worker_register_job_name(WORKER_JOB_PP_CONTEXT, "check contexts"); + + worker_register_job_custom_metric(WORKER_JOB_HUB_QUEUE_SIZE, "hub queue size", "contexts", WORKER_METRIC_ABSOLUTE); + worker_register_job_custom_metric(WORKER_JOB_PP_QUEUE_SIZE, "post processing queue size", "contexts", WORKER_METRIC_ABSOLUTE); + + heartbeat_t hb; + heartbeat_init(&hb); + usec_t step = RRDCONTEXT_WORKER_THREAD_HEARTBEAT_USEC; + + while (!netdata_exit) { + worker_is_idle(); + heartbeat_next(&hb, step); + + if(unlikely(netdata_exit)) break; + + usec_t now_ut = now_realtime_usec(); + + if(rrdcontext_next_db_rotation_ut && now_ut > rrdcontext_next_db_rotation_ut) { + rrdcontext_recalculate_retention_all_hosts(); + rrdcontext_garbage_collect_for_all_hosts(); + rrdcontext_next_db_rotation_ut = 0; + } + + size_t hub_queued_contexts_for_all_hosts = 0; + size_t pp_queued_contexts_for_all_hosts = 0; + + rrd_rdlock(); + RRDHOST *host; + rrdhost_foreach_read(host) { + if(unlikely(netdata_exit)) break; + + worker_is_busy(WORKER_JOB_HOSTS); + + if(host->rrdctx_post_processing_queue) { + pp_queued_contexts_for_all_hosts += + dictionary_entries((DICTIONARY *)host->rrdctx_post_processing_queue); + rrdcontext_post_process_queued_contexts(host); + } + + if(host->rrdctx_hub_queue) { + hub_queued_contexts_for_all_hosts += dictionary_entries((DICTIONARY *)host->rrdctx_hub_queue); + rrdcontext_dispatch_queued_contexts_to_hub(host, now_ut); + } + } + rrd_unlock(); + + worker_set_metric(WORKER_JOB_HUB_QUEUE_SIZE, (NETDATA_DOUBLE)hub_queued_contexts_for_all_hosts); + worker_set_metric(WORKER_JOB_PP_QUEUE_SIZE, (NETDATA_DOUBLE)pp_queued_contexts_for_all_hosts); + } + + netdata_thread_cleanup_pop(1); + return NULL; +} |