diff options
Diffstat (limited to '')
| -rw-r--r-- | database/rrddim.c | 756 |
1 files changed, 756 insertions, 0 deletions
diff --git a/database/rrddim.c b/database/rrddim.c new file mode 100644 index 0000000..2d909a7 --- /dev/null +++ b/database/rrddim.c @@ -0,0 +1,756 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#define NETDATA_RRD_INTERNALS +#include "rrd.h" +#include "storage_engine.h" + +// ---------------------------------------------------------------------------- +// RRDDIM index + +struct rrddim_constructor { + RRDSET *st; + const char *id; + const char *name; + collected_number multiplier; + collected_number divisor; + RRD_ALGORITHM algorithm; + RRD_MEMORY_MODE memory_mode; + + enum { + RRDDIM_REACT_NONE = 0, + RRDDIM_REACT_NEW = (1 << 0), + RRDDIM_REACT_UPDATED = (1 << 2), + } react_action; + +}; + +// isolated call to appear +// separate in statistics +static void *rrddim_alloc_db(size_t entries) { + return callocz(entries, sizeof(storage_number)); +} + +static void rrddim_insert_callback(const DICTIONARY_ITEM *item __maybe_unused, void *rrddim, void *constructor_data) { + struct rrddim_constructor *ctr = constructor_data; + RRDDIM *rd = rrddim; + RRDSET *st = ctr->st; + RRDHOST *host = st->rrdhost; + + rd->flags = RRDDIM_FLAG_NONE; + + rd->id = string_strdupz(ctr->id); + rd->name = (ctr->name && *ctr->name)?rrd_string_strdupz(ctr->name):string_dup(rd->id); + + rd->algorithm = ctr->algorithm; + rd->multiplier = ctr->multiplier; + rd->divisor = ctr->divisor; + if(!rd->divisor) rd->divisor = 1; + + rd->update_every = st->update_every; + + rd->rrdset = st; + + if(rrdset_flag_check(st, RRDSET_FLAG_STORE_FIRST)) + rd->collections_counter = 1; + + if(ctr->memory_mode == RRD_MEMORY_MODE_MAP || ctr->memory_mode == RRD_MEMORY_MODE_SAVE) { + if(!rrddim_memory_load_or_create_map_save(st, rd, ctr->memory_mode)) { + info("Failed to use memory mode %s for chart '%s', dimension '%s', falling back to ram", (ctr->memory_mode == RRD_MEMORY_MODE_MAP)?"map":"save", rrdset_name(st), rrddim_name(rd)); + ctr->memory_mode = RRD_MEMORY_MODE_RAM; + } + } + + if(ctr->memory_mode == RRD_MEMORY_MODE_RAM) { + size_t entries = st->entries; + if(!entries) entries = 5; + + rd->db = netdata_mmap(NULL, entries * sizeof(storage_number), MAP_PRIVATE, 1); + if(!rd->db) { + info("Failed to use memory mode ram for chart '%s', dimension '%s', falling back to alloc", rrdset_name(st), rrddim_name(rd)); + ctr->memory_mode = RRD_MEMORY_MODE_ALLOC; + } + else rd->memsize = entries * sizeof(storage_number); + } + + if(ctr->memory_mode == RRD_MEMORY_MODE_ALLOC || ctr->memory_mode == RRD_MEMORY_MODE_NONE) { + size_t entries = st->entries; + if(entries < 5) entries = 5; + + rd->db = rrddim_alloc_db(entries); + rd->memsize = entries * sizeof(storage_number); + } + + rd->rrd_memory_mode = ctr->memory_mode; + + if (unlikely(rrdcontext_find_dimension_uuid(st, rrddim_id(rd), &(rd->metric_uuid)))) { + uuid_generate(rd->metric_uuid); + bool found_in_sql = false; (void)found_in_sql; + +// bool found_in_sql = true; +// if(unlikely(sql_find_dimension_uuid(st, rd, &rd->metric_uuid))) { +// found_in_sql = false; +// uuid_generate(rd->metric_uuid); +// } + +#ifdef NETDATA_INTERNAL_CHECKS + char uuid_str[UUID_STR_LEN]; + uuid_unparse_lower(rd->metric_uuid, uuid_str); + error_report("Dimension UUID for host %s chart [%s] dimension [%s] not found in context. It is now set to %s (%s)", + string2str(host->hostname), + string2str(st->name), + string2str(rd->name), + uuid_str, found_in_sql ? "found in sqlite" : "newly generated"); +#endif + } + + // initialize the db tiers + { + size_t initialized = 0; + for(size_t tier = 0; tier < storage_tiers ; tier++) { + STORAGE_ENGINE *eng = host->db[tier].eng; + rd->tiers[tier] = callocz(1, sizeof(struct rrddim_tier)); + rd->tiers[tier]->tier_grouping = host->db[tier].tier_grouping; + rd->tiers[tier]->collect_ops = &eng->api.collect_ops; + rd->tiers[tier]->query_ops = &eng->api.query_ops; + rd->tiers[tier]->db_metric_handle = eng->api.metric_get_or_create(rd, host->db[tier].instance); + storage_point_unset(rd->tiers[tier]->virtual_point); + initialized++; + + // internal_error(true, "TIER GROUPING of chart '%s', dimension '%s' for tier %d is set to %d", rd->rrdset->name, rd->name, tier, rd->tiers[tier]->tier_grouping); + } + + if(!initialized) + error("Failed to initialize all db tiers for chart '%s', dimension '%s", rrdset_name(st), rrddim_name(rd)); + + if(!rd->tiers[0]) + error("Failed to initialize the first db tier for chart '%s', dimension '%s", rrdset_name(st), rrddim_name(rd)); + } + + // initialize data collection for all tiers + { + size_t initialized = 0; + for (size_t tier = 0; tier < storage_tiers; tier++) { + if (rd->tiers[tier]) { + rd->tiers[tier]->db_collection_handle = rd->tiers[tier]->collect_ops->init(rd->tiers[tier]->db_metric_handle, st->rrdhost->db[tier].tier_grouping * st->update_every, rd->rrdset->storage_metrics_groups[tier]); + initialized++; + } + } + + if(!initialized) + error("Failed to initialize data collection for all db tiers for chart '%s', dimension '%s", rrdset_name(st), rrddim_name(rd)); + } + + if(rrdset_number_of_dimensions(st) != 0) { + RRDDIM *td; + dfe_start_write(st->rrddim_root_index, td) { + if(!td) break; + } + dfe_done(td); + + if(td && (td->algorithm != rd->algorithm || ABS(td->multiplier) != ABS(rd->multiplier) || ABS(td->divisor) != ABS(rd->divisor))) { + if(!rrdset_flag_check(st, RRDSET_FLAG_HETEROGENEOUS)) { +#ifdef NETDATA_INTERNAL_CHECKS + info("Dimension '%s' added on chart '%s' of host '%s' is not homogeneous to other dimensions already present (algorithm is '%s' vs '%s', multiplier is " COLLECTED_NUMBER_FORMAT " vs " COLLECTED_NUMBER_FORMAT ", divisor is " COLLECTED_NUMBER_FORMAT " vs " COLLECTED_NUMBER_FORMAT ").", + rrddim_name(rd), + rrdset_name(st), + rrdhost_hostname(host), + rrd_algorithm_name(rd->algorithm), rrd_algorithm_name(td->algorithm), + rd->multiplier, td->multiplier, + rd->divisor, td->divisor + ); +#endif + rrdset_flag_set(st, RRDSET_FLAG_HETEROGENEOUS); + } + } + } + + rrddim_flag_set(rd, RRDDIM_FLAG_PENDING_HEALTH_INITIALIZATION); + rrdset_flag_set(rd->rrdset, RRDSET_FLAG_PENDING_HEALTH_INITIALIZATION); + rrdhost_flag_set(rd->rrdset->rrdhost, RRDHOST_FLAG_PENDING_HEALTH_INITIALIZATION); + + // let the chart resync + rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK); + rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED); + + ml_new_dimension(rd); + + ctr->react_action = RRDDIM_REACT_NEW; + + internal_error(false, "RRDDIM: inserted dimension '%s' of chart '%s' of host '%s'", + rrddim_name(rd), rrdset_name(st), rrdhost_hostname(st->rrdhost)); + +} + +static void rrddim_delete_callback(const DICTIONARY_ITEM *item __maybe_unused, void *rrddim, void *rrdset) { + RRDDIM *rd = rrddim; + RRDSET *st = rrdset; + RRDHOST *host = st->rrdhost; + + internal_error(false, "RRDDIM: deleting dimension '%s' of chart '%s' of host '%s'", + rrddim_name(rd), rrdset_name(st), rrdhost_hostname(host)); + + rrdcontext_removed_rrddim(rd); + + ml_delete_dimension(rd); + + debug(D_RRD_CALLS, "rrddim_free() %s.%s", rrdset_name(st), rrddim_name(rd)); + + size_t tiers_available = 0, tiers_said_no_retention = 0; + for(size_t tier = 0; tier < storage_tiers ;tier++) { + if(rd->tiers[tier] && rd->tiers[tier]->db_collection_handle) { + tiers_available++; + + if(rd->tiers[tier]->collect_ops->finalize(rd->tiers[tier]->db_collection_handle)) + tiers_said_no_retention++; + + rd->tiers[tier]->db_collection_handle = NULL; + } + } + + if (tiers_available == tiers_said_no_retention && tiers_said_no_retention && rd->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) { + /* This metric has no data and no references */ + metaqueue_delete_dimension_uuid(&rd->metric_uuid); + } + + rrddimvar_delete_all(rd); + + // free(rd->annotations); + //#ifdef ENABLE_ACLK + // if (!netdata_exit) + // aclk_send_dimension_update(rd); + //#endif + + // this will free MEMORY_MODE_SAVE and MEMORY_MODE_MAP structures + rrddim_memory_file_free(rd); + + for(size_t tier = 0; tier < storage_tiers ;tier++) { + if(!rd->tiers[tier]) continue; + + STORAGE_ENGINE* eng = host->db[tier].eng; + eng->api.metric_release(rd->tiers[tier]->db_metric_handle); + + freez(rd->tiers[tier]); + rd->tiers[tier] = NULL; + } + + if(rd->db) { + if(rd->rrd_memory_mode == RRD_MEMORY_MODE_RAM) + netdata_munmap(rd->db, rd->memsize); + else + freez(rd->db); + } + + string_freez(rd->id); + string_freez(rd->name); +} + +static bool rrddim_conflict_callback(const DICTIONARY_ITEM *item __maybe_unused, void *rrddim, void *new_rrddim, void *constructor_data) { + (void)new_rrddim; // it is NULL + + struct rrddim_constructor *ctr = constructor_data; + RRDDIM *rd = rrddim; + RRDSET *st = ctr->st; + + ctr->react_action = RRDDIM_REACT_NONE; + + int rc = rrddim_reset_name(st, rd, ctr->name); + rc += rrddim_set_algorithm(st, rd, ctr->algorithm); + rc += rrddim_set_multiplier(st, rd, ctr->multiplier); + rc += rrddim_set_divisor(st, rd, ctr->divisor); + + for(size_t tier = 0; tier < storage_tiers ;tier++) { + if (rd->tiers[tier] && !rd->tiers[tier]->db_collection_handle) + rd->tiers[tier]->db_collection_handle = + rd->tiers[tier]->collect_ops->init(rd->tiers[tier]->db_metric_handle, st->rrdhost->db[tier].tier_grouping * st->update_every, rd->rrdset->storage_metrics_groups[tier]); + } + + if(rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED)) { + rrddim_flag_clear(rd, RRDDIM_FLAG_ARCHIVED); + + rrddim_flag_set(rd, RRDDIM_FLAG_PENDING_HEALTH_INITIALIZATION); + rrdset_flag_set(rd->rrdset, RRDSET_FLAG_PENDING_HEALTH_INITIALIZATION); + rrdhost_flag_set(rd->rrdset->rrdhost, RRDHOST_FLAG_PENDING_HEALTH_INITIALIZATION); + } + + if(unlikely(rc)) + ctr->react_action = RRDDIM_REACT_UPDATED; + + return ctr->react_action == RRDDIM_REACT_UPDATED; +} + +static void rrddim_react_callback(const DICTIONARY_ITEM *item __maybe_unused, void *rrddim, void *constructor_data) { + struct rrddim_constructor *ctr = constructor_data; + RRDDIM *rd = rrddim; + RRDSET *st = ctr->st; + + if(ctr->react_action & (RRDDIM_REACT_UPDATED | RRDDIM_REACT_NEW)) { + rrddim_flag_set(rd, RRDDIM_FLAG_METADATA_UPDATE); + rrdset_flag_set(rd->rrdset, RRDSET_FLAG_METADATA_UPDATE); + rrdhost_flag_set(rd->rrdset->rrdhost, RRDHOST_FLAG_METADATA_UPDATE); + } + + if(ctr->react_action == RRDDIM_REACT_UPDATED) { + // the chart needs to be updated to the parent + rrdset_flag_set(st, RRDSET_FLAG_SYNC_CLOCK); + rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED); + } + + rrdcontext_updated_rrddim(rd); +} + +void rrddim_index_init(RRDSET *st) { + if(!st->rrddim_root_index) { + st->rrddim_root_index = dictionary_create(DICT_OPTION_DONT_OVERWRITE_VALUE); + + dictionary_register_insert_callback(st->rrddim_root_index, rrddim_insert_callback, NULL); + dictionary_register_conflict_callback(st->rrddim_root_index, rrddim_conflict_callback, NULL); + dictionary_register_delete_callback(st->rrddim_root_index, rrddim_delete_callback, st); + dictionary_register_react_callback(st->rrddim_root_index, rrddim_react_callback, st); + } +} + +void rrddim_index_destroy(RRDSET *st) { + dictionary_destroy(st->rrddim_root_index); + st->rrddim_root_index = NULL; +} + +static inline RRDDIM *rrddim_index_find(RRDSET *st, const char *id) { + return dictionary_get(st->rrddim_root_index, id); +} + +// ---------------------------------------------------------------------------- +// RRDDIM - find a dimension + +inline RRDDIM *rrddim_find(RRDSET *st, const char *id) { + debug(D_RRD_CALLS, "rrddim_find() for chart %s, dimension %s", rrdset_name(st), id); + + return rrddim_index_find(st, id); +} + +inline RRDDIM_ACQUIRED *rrddim_find_and_acquire(RRDSET *st, const char *id) { + debug(D_RRD_CALLS, "rrddim_find() for chart %s, dimension %s", rrdset_name(st), id); + + return (RRDDIM_ACQUIRED *)dictionary_get_and_acquire_item(st->rrddim_root_index, id); +} + +RRDDIM *rrddim_acquired_to_rrddim(RRDDIM_ACQUIRED *rda) { + if(unlikely(!rda)) + return NULL; + + return (RRDDIM *) dictionary_acquired_item_value((const DICTIONARY_ITEM *)rda); +} + +void rrddim_acquired_release(RRDDIM_ACQUIRED *rda) { + if(unlikely(!rda)) + return; + + RRDDIM *rd = rrddim_acquired_to_rrddim(rda); + dictionary_acquired_item_release(rd->rrdset->rrddim_root_index, (const DICTIONARY_ITEM *)rda); +} + +// This will not return dimensions that are archived +RRDDIM *rrddim_find_active(RRDSET *st, const char *id) { + RRDDIM *rd = rrddim_find(st, id); + + if (unlikely(rd && rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED))) + return NULL; + + return rd; +} + +// ---------------------------------------------------------------------------- +// RRDDIM rename a dimension + +inline int rrddim_reset_name(RRDSET *st, RRDDIM *rd, const char *name) { + if(unlikely(!name || !*name || !strcmp(rrddim_name(rd), name))) + return 0; + + debug(D_RRD_CALLS, "rrddim_reset_name() from %s.%s to %s.%s", rrdset_name(st), rrddim_name(rd), rrdset_name(st), name); + + STRING *old = rd->name; + rd->name = rrd_string_strdupz(name); + string_freez(old); + + rrddimvar_rename_all(rd); + + rd->exposed = 0; + rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED); + + return 1; +} + +inline int rrddim_set_algorithm(RRDSET *st, RRDDIM *rd, RRD_ALGORITHM algorithm) { + if(unlikely(rd->algorithm == algorithm)) + return 0; + + debug(D_RRD_CALLS, "Updating algorithm of dimension '%s/%s' from %s to %s", rrdset_id(st), rrddim_name(rd), rrd_algorithm_name(rd->algorithm), rrd_algorithm_name(algorithm)); + rd->algorithm = algorithm; + rd->exposed = 0; + rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED); + rrdset_flag_set(st, RRDSET_FLAG_HOMOGENEOUS_CHECK); + rrdcontext_updated_rrddim_algorithm(rd); + return 1; +} + +inline int rrddim_set_multiplier(RRDSET *st, RRDDIM *rd, collected_number multiplier) { + if(unlikely(rd->multiplier == multiplier)) + return 0; + + debug(D_RRD_CALLS, "Updating multiplier of dimension '%s/%s' from " COLLECTED_NUMBER_FORMAT " to " COLLECTED_NUMBER_FORMAT, rrdset_id(st), rrddim_name(rd), rd->multiplier, multiplier); + rd->multiplier = multiplier; + rd->exposed = 0; + rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED); + rrdset_flag_set(st, RRDSET_FLAG_HOMOGENEOUS_CHECK); + rrdcontext_updated_rrddim_multiplier(rd); + return 1; +} + +inline int rrddim_set_divisor(RRDSET *st, RRDDIM *rd, collected_number divisor) { + if(unlikely(rd->divisor == divisor)) + return 0; + + debug(D_RRD_CALLS, "Updating divisor of dimension '%s/%s' from " COLLECTED_NUMBER_FORMAT " to " COLLECTED_NUMBER_FORMAT, rrdset_id(st), rrddim_name(rd), rd->divisor, divisor); + rd->divisor = divisor; + rd->exposed = 0; + rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED); + rrdset_flag_set(st, RRDSET_FLAG_HOMOGENEOUS_CHECK); + rrdcontext_updated_rrddim_divisor(rd); + return 1; +} + +// ---------------------------------------------------------------------------- + +// get the timestamp of the last entry in the round-robin database +time_t rrddim_last_entry_t(RRDDIM *rd) { + time_t latest = rd->tiers[0]->query_ops->latest_time(rd->tiers[0]->db_metric_handle); + + for(size_t tier = 1; tier < storage_tiers ;tier++) { + if(unlikely(!rd->tiers[tier])) continue; + + time_t t = rd->tiers[tier]->query_ops->latest_time(rd->tiers[tier]->db_metric_handle); + if(t > latest) + latest = t; + } + + return latest; +} + +time_t rrddim_first_entry_t_of_tier(RRDDIM *rd, size_t tier) { + if(unlikely(tier > storage_tiers || !rd->tiers[tier])) + return 0; + + return rd->tiers[tier]->query_ops->oldest_time(rd->tiers[tier]->db_metric_handle); +} + +time_t rrddim_first_entry_t(RRDDIM *rd) { + time_t oldest = 0; + + for(size_t tier = 0; tier < storage_tiers ;tier++) { + time_t t = rrddim_first_entry_t_of_tier(rd, tier); + if(t != 0 && (oldest == 0 || t < oldest)) + oldest = t; + } + + return oldest; +} + +RRDDIM *rrddim_add_custom(RRDSET *st + , const char *id + , const char *name + , collected_number multiplier + , collected_number divisor + , RRD_ALGORITHM algorithm + , RRD_MEMORY_MODE memory_mode + ) { + struct rrddim_constructor tmp = { + .st = st, + .id = id, + .name = name, + .multiplier = multiplier, + .divisor = divisor, + .algorithm = algorithm, + .memory_mode = memory_mode, + }; + + RRDDIM *rd = dictionary_set_advanced(st->rrddim_root_index, tmp.id, -1, NULL, sizeof(RRDDIM), &tmp); + return(rd); +} + +// ---------------------------------------------------------------------------- +// RRDDIM remove / free a dimension + +void rrddim_free(RRDSET *st, RRDDIM *rd) { + dictionary_del(st->rrddim_root_index, string2str(rd->id)); +} + + +// ---------------------------------------------------------------------------- +// RRDDIM - set dimension options + +int rrddim_hide(RRDSET *st, const char *id) { + debug(D_RRD_CALLS, "rrddim_hide() for chart %s, dimension %s", rrdset_name(st), id); + + RRDHOST *host = st->rrdhost; + + RRDDIM *rd = rrddim_find(st, id); + if(unlikely(!rd)) { + error("Cannot find dimension with id '%s' on stats '%s' (%s) on host '%s'.", id, rrdset_name(st), rrdset_id(st), rrdhost_hostname(host)); + return 1; + } + if (!rrddim_flag_check(rd, RRDDIM_FLAG_META_HIDDEN)) { + rrddim_flag_set(rd, RRDDIM_FLAG_META_HIDDEN); + metaqueue_dimension_update_flags(rd); + } + + rrddim_option_set(rd, RRDDIM_OPTION_HIDDEN); + rrdcontext_updated_rrddim_flags(rd); + return 0; +} + +int rrddim_unhide(RRDSET *st, const char *id) { + debug(D_RRD_CALLS, "rrddim_unhide() for chart %s, dimension %s", rrdset_name(st), id); + + RRDHOST *host = st->rrdhost; + RRDDIM *rd = rrddim_find(st, id); + if(unlikely(!rd)) { + error("Cannot find dimension with id '%s' on stats '%s' (%s) on host '%s'.", id, rrdset_name(st), rrdset_id(st), rrdhost_hostname(host)); + return 1; + } + if (rrddim_flag_check(rd, RRDDIM_FLAG_META_HIDDEN)) { + rrddim_flag_clear(rd, RRDDIM_FLAG_META_HIDDEN); + metaqueue_dimension_update_flags(rd); + } + + rrddim_option_clear(rd, RRDDIM_OPTION_HIDDEN); + rrdcontext_updated_rrddim_flags(rd); + return 0; +} + +inline void rrddim_is_obsolete(RRDSET *st, RRDDIM *rd) { + debug(D_RRD_CALLS, "rrddim_is_obsolete() for chart %s, dimension %s", rrdset_name(st), rrddim_name(rd)); + + if(unlikely(rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED))) { + info("Cannot obsolete already archived dimension %s from chart %s", rrddim_name(rd), rrdset_name(st)); + return; + } + rrddim_flag_set(rd, RRDDIM_FLAG_OBSOLETE); + rrdset_flag_set(st, RRDSET_FLAG_OBSOLETE_DIMENSIONS); + rrdhost_flag_set(st->rrdhost, RRDHOST_FLAG_PENDING_OBSOLETE_DIMENSIONS); + rrdcontext_updated_rrddim_flags(rd); +} + +inline void rrddim_isnot_obsolete(RRDSET *st __maybe_unused, RRDDIM *rd) { + debug(D_RRD_CALLS, "rrddim_isnot_obsolete() for chart %s, dimension %s", rrdset_name(st), rrddim_name(rd)); + + rrddim_flag_clear(rd, RRDDIM_FLAG_OBSOLETE); + rrdcontext_updated_rrddim_flags(rd); +} + +// ---------------------------------------------------------------------------- +// RRDDIM - collect values for a dimension + +inline collected_number rrddim_set_by_pointer(RRDSET *st, RRDDIM *rd, collected_number value) { + struct timeval now; + now_realtime_timeval(&now); + + return rrddim_timed_set_by_pointer(st, rd, now, value); +} + +collected_number rrddim_timed_set_by_pointer(RRDSET *st __maybe_unused, RRDDIM *rd, struct timeval collected_time, collected_number value) { + debug(D_RRD_CALLS, "rrddim_set_by_pointer() for chart %s, dimension %s, value " COLLECTED_NUMBER_FORMAT, rrdset_name(st), rrddim_name(rd), value); + + rd->last_collected_time = collected_time; + rd->collected_value = value; + rd->updated = 1; + rd->collections_counter++; + + collected_number v = (value >= 0) ? value : -value; + if (unlikely(v > rd->collected_value_max)) + rd->collected_value_max = v; + + return rd->last_collected_value; +} + + +collected_number rrddim_set(RRDSET *st, const char *id, collected_number value) { + RRDHOST *host = st->rrdhost; + RRDDIM *rd = rrddim_find(st, id); + if(unlikely(!rd)) { + error("Cannot find dimension with id '%s' on stats '%s' (%s) on host '%s'.", id, rrdset_name(st), rrdset_id(st), rrdhost_hostname(host)); + return 0; + } + + return rrddim_set_by_pointer(st, rd, value); +} + + +// ---------------------------------------------------------------------------- +// compatibility layer for RRDDIM files v019 + +#define RRDDIMENSION_MAGIC_V019 "NETDATA RRD DIMENSION FILE V019" + +struct avl_element_v019 { + void *avl_link[2]; + signed char avl_balance; +}; + +struct rrddim_map_save_v019 { + struct avl_element_v019 avl; // ignored + void *id; // ignored + void *name; // ignored + uint32_t algorithm; // print warning on mismatch - update on load + uint32_t rrd_memory_mode; // ignored + long long multiplier; // print warning on mismatch - update on load + long long divisor; // print warning on mismatch - update on load + uint32_t flags; // ignored + uint32_t hash; // ignored + uint32_t hash_name; // ignored + void *cache_filename; // ignored - we use it to keep the filename to save back + size_t collections_counter; // ignored + void *state; // ignored + size_t unused[8]; // ignored + long long collected_value_max; // ignored + unsigned int updated:1; // ignored + unsigned int exposed:1; // ignored + struct timeval last_collected_time; // check to reset all - ignored after load + long double calculated_value; // ignored + long double last_calculated_value; // ignored + long double last_stored_value; // ignored + long long collected_value; // ignored + long long last_collected_value; // load and save + long double collected_volume; // ignored + long double stored_volume; // ignored + void *next; // ignored + void *rrdset; // ignored + long entries; // check to reset all - update on load + int update_every; // check to reset all - update on load + size_t memsize; // check to reset all - update on load + char magic[sizeof(RRDDIMENSION_MAGIC_V019) + 1];// check to reset all - update on load + void *variables; // ignored + storage_number values[]; // the array of values +}; + +size_t rrddim_memory_file_header_size(void) { + return sizeof(struct rrddim_map_save_v019); +} + +void rrddim_memory_file_update(RRDDIM *rd) { + if(!rd || !rd->rd_on_file) return; + struct rrddim_map_save_v019 *rd_on_file = rd->rd_on_file; + + rd_on_file->last_collected_time.tv_sec = rd->last_collected_time.tv_sec; + rd_on_file->last_collected_time.tv_usec = rd->last_collected_time.tv_usec; + rd_on_file->last_collected_value = rd->last_collected_value; +} + +void rrddim_memory_file_free(RRDDIM *rd) { + if(!rd || !rd->rd_on_file) return; + + // needed for memory mode map, to save the latest state + rrddim_memory_file_update(rd); + + struct rrddim_map_save_v019 *rd_on_file = rd->rd_on_file; + freez(rd_on_file->cache_filename); + netdata_munmap(rd_on_file, rd_on_file->memsize); + + // remove the pointers from the RRDDIM + rd->rd_on_file = NULL; + rd->db = NULL; +} + +const char *rrddim_cache_filename(RRDDIM *rd) { + if(!rd || !rd->rd_on_file) return NULL; + struct rrddim_map_save_v019 *rd_on_file = rd->rd_on_file; + return rd_on_file->cache_filename; +} + +void rrddim_memory_file_save(RRDDIM *rd) { + if(!rd || !rd->rd_on_file) return; + + rrddim_memory_file_update(rd); + + struct rrddim_map_save_v019 *rd_on_file = rd->rd_on_file; + if(rd_on_file->rrd_memory_mode != RRD_MEMORY_MODE_SAVE) return; + + memory_file_save(rd_on_file->cache_filename, rd_on_file, rd_on_file->memsize); +} + +bool rrddim_memory_load_or_create_map_save(RRDSET *st, RRDDIM *rd, RRD_MEMORY_MODE memory_mode) { + if(memory_mode != RRD_MEMORY_MODE_SAVE && memory_mode != RRD_MEMORY_MODE_MAP) + return false; + + struct rrddim_map_save_v019 *rd_on_file = NULL; + + unsigned long size = sizeof(struct rrddim_map_save_v019) + (st->entries * sizeof(storage_number)); + + char filename[FILENAME_MAX + 1]; + char fullfilename[FILENAME_MAX + 1]; + rrdset_strncpyz_name(filename, rrddim_id(rd), FILENAME_MAX); + snprintfz(fullfilename, FILENAME_MAX, "%s/%s.db", st->cache_dir, filename); + + rd_on_file = (struct rrddim_map_save_v019 *)netdata_mmap(fullfilename, size, + ((memory_mode == RRD_MEMORY_MODE_MAP) ? MAP_SHARED : MAP_PRIVATE), 1); + + if(unlikely(!rd_on_file)) return false; + + struct timeval now; + now_realtime_timeval(&now); + + int reset = 0; + rd_on_file->magic[sizeof(RRDDIMENSION_MAGIC_V019)] = '\0'; + if(strcmp(rd_on_file->magic, RRDDIMENSION_MAGIC_V019) != 0) { + info("Initializing file %s.", fullfilename); + memset(rd_on_file, 0, size); + reset = 1; + } + else if(rd_on_file->memsize != size) { + error("File %s does not have the desired size, expected %lu but found %lu. Clearing it.", fullfilename, size, (unsigned long int) rd_on_file->memsize); + memset(rd_on_file, 0, size); + reset = 1; + } + else if(rd_on_file->update_every != st->update_every) { + error("File %s does not have the same update frequency, expected %d but found %d. Clearing it.", fullfilename, st->update_every, rd_on_file->update_every); + memset(rd_on_file, 0, size); + reset = 1; + } + else if(dt_usec(&now, &rd_on_file->last_collected_time) > (rd_on_file->entries * rd_on_file->update_every * USEC_PER_SEC)) { + info("File %s is too old (last collected %llu seconds ago, but the database is %ld seconds). Clearing it.", fullfilename, dt_usec(&now, &rd_on_file->last_collected_time) / USEC_PER_SEC, rd_on_file->entries * rd_on_file->update_every); + memset(rd_on_file, 0, size); + reset = 1; + } + + if(!reset) { + rd->last_collected_value = rd_on_file->last_collected_value; + + if(rd_on_file->algorithm != rd->algorithm) + info("File %s does not have the expected algorithm (expected %u '%s', found %u '%s'). Previous values may be wrong.", + fullfilename, rd->algorithm, rrd_algorithm_name(rd->algorithm), rd_on_file->algorithm, rrd_algorithm_name(rd_on_file->algorithm)); + + if(rd_on_file->multiplier != rd->multiplier) + info("File %s does not have the expected multiplier (expected " COLLECTED_NUMBER_FORMAT ", found " COLLECTED_NUMBER_FORMAT "). Previous values may be wrong.", fullfilename, rd->multiplier, rd_on_file->multiplier); + + if(rd_on_file->divisor != rd->divisor) + info("File %s does not have the expected divisor (expected " COLLECTED_NUMBER_FORMAT ", found " COLLECTED_NUMBER_FORMAT "). Previous values may be wrong.", fullfilename, rd->divisor, rd_on_file->divisor); + } + + // zero the entire header + memset(rd_on_file, 0, sizeof(struct rrddim_map_save_v019)); + + // set the important fields + strcpy(rd_on_file->magic, RRDDIMENSION_MAGIC_V019); + rd_on_file->algorithm = rd->algorithm; + rd_on_file->multiplier = rd->multiplier; + rd_on_file->divisor = rd->divisor; + rd_on_file->entries = st->entries; + rd_on_file->update_every = rd->update_every; + rd_on_file->memsize = size; + rd_on_file->rrd_memory_mode = memory_mode; + rd_on_file->cache_filename = strdupz(fullfilename); + + rd->db = &rd_on_file->values[0]; + rd->rd_on_file = rd_on_file; + rd->memsize = size; + rrddim_memory_file_update(rd); + + return true; +} |