diff options
Diffstat (limited to 'database/rrdcalctemplate.c')
| -rw-r--r-- | database/rrdcalctemplate.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/database/rrdcalctemplate.c b/database/rrdcalctemplate.c new file mode 100644 index 00000000..f0e5da80 --- /dev/null +++ b/database/rrdcalctemplate.c @@ -0,0 +1,242 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "rrd.h" + +// ---------------------------------------------------------------------------- +// RRDCALCTEMPLATE management +/** + * RRDCALC TEMPLATE LINK MATCHING + * + * @param rt is the template used to create the chart. + * @param st is the chart where the alarm will be attached. + */ + +static char *rrdcalc_alert_name_with_dimension(const char *name, size_t namelen, const char *dim, size_t dimlen) { + char *newname,*move; + + newname = mallocz(namelen + dimlen + 2); + move = newname; + memcpy(move, name, namelen); + move += namelen; + + *move++ = '_'; + memcpy(move, dim, dimlen); + move += dimlen; + *move = '\0'; + + return newname; +} + +bool rrdcalctemplate_check_rrdset_conditions(RRDCALCTEMPLATE *rt, RRDSET *st, RRDHOST *host) { + if(rt->context != st->context) + return false; + + if(rt->foreach_dimension_pattern && !rrdset_number_of_dimensions(st)) + return false; + + if (rt->charts_pattern && !simple_pattern_matches_string(rt->charts_pattern, st->name) && !simple_pattern_matches_string(rt->charts_pattern, st->id)) + return false; + + if (rt->module_pattern && !simple_pattern_matches_string(rt->module_pattern, st->module_name)) + return false; + + if (rt->plugin_pattern && !simple_pattern_matches_string(rt->plugin_pattern, st->plugin_name)) + return false; + + if(host->rrdlabels && rt->host_labels_pattern && !rrdlabels_match_simple_pattern_parsed(host->rrdlabels, + rt->host_labels_pattern, + '=', NULL)) + return false; + + if(st->rrdlabels && rt->chart_labels_pattern && !rrdlabels_match_simple_pattern_parsed(st->rrdlabels, + rt->chart_labels_pattern, + '=', NULL)) + return false; + + return true; +} + +void rrdcalctemplate_check_rrddim_conditions_and_link(RRDCALCTEMPLATE *rt, RRDSET *st, RRDDIM *rd, RRDHOST *host) { + if (simple_pattern_matches_string(rt->foreach_dimension_pattern, rd->id) || + simple_pattern_matches_string(rt->foreach_dimension_pattern, rd->name)) { + char *overwrite_alert_name = rrdcalc_alert_name_with_dimension( + rrdcalctemplate_name(rt), string_strlen(rt->name), rrddim_name(rd), string_strlen(rd->name)); + rrdcalc_add_from_rrdcalctemplate(host, rt, st, overwrite_alert_name, rrddim_name(rd)); + freez(overwrite_alert_name); + } +} + +void rrdcalctemplate_check_conditions_and_link(RRDCALCTEMPLATE *rt, RRDSET *st, RRDHOST *host) { + if(!rrdcalctemplate_check_rrdset_conditions(rt, st, host)) + return; + + if(!rt->foreach_dimension_pattern) { + rrdcalc_add_from_rrdcalctemplate(host, rt, st, NULL, NULL); + return; + } + + RRDDIM *rd; + rrddim_foreach_read(rd, st) { + rrdcalctemplate_check_rrddim_conditions_and_link(rt, st, rd, host); + } + rrddim_foreach_done(rd); +} + +void rrdcalctemplate_link_matching_templates_to_rrdset(RRDSET *st) { + RRDHOST *host = st->rrdhost; + + RRDCALCTEMPLATE *rt; + foreach_rrdcalctemplate_read(host, rt) { + rrdcalctemplate_check_conditions_and_link(rt, st, host); + } + foreach_rrdcalctemplate_done(rt); +} + +static void rrdcalctemplate_free_internals(RRDCALCTEMPLATE *rt) { + expression_free(rt->calculation); + expression_free(rt->warning); + expression_free(rt->critical); + + string_freez(rt->plugin_match); + simple_pattern_free(rt->plugin_pattern); + + string_freez(rt->module_match); + simple_pattern_free(rt->module_pattern); + + string_freez(rt->charts_match); + simple_pattern_free(rt->charts_pattern); + + string_freez(rt->name); + string_freez(rt->exec); + string_freez(rt->recipient); + string_freez(rt->classification); + string_freez(rt->component); + string_freez(rt->type); + string_freez(rt->context); + string_freez(rt->source); + string_freez(rt->units); + string_freez(rt->info); + string_freez(rt->dimensions); + string_freez(rt->foreach_dimension); + string_freez(rt->host_labels); + string_freez(rt->chart_labels); + simple_pattern_free(rt->foreach_dimension_pattern); + simple_pattern_free(rt->host_labels_pattern); + simple_pattern_free(rt->chart_labels_pattern); +} + +void rrdcalctemplate_free_unused_rrdcalctemplate_loaded_from_config(RRDCALCTEMPLATE *rt) { + if(unlikely(!rt)) return; + + rrdcalctemplate_free_internals(rt); + freez(rt); +} +static void rrdcalctemplate_insert_callback(const DICTIONARY_ITEM *item __maybe_unused, void *rrdcalctemplate, void *added_bool) { + RRDCALCTEMPLATE *rt = rrdcalctemplate; (void)rt; + + bool *added = added_bool; + *added = true; + + netdata_log_debug(D_HEALTH, "Health configuration adding template '%s'" + ": context '%s'" + ", exec '%s'" + ", recipient '%s'" + ", green " NETDATA_DOUBLE_FORMAT_AUTO + ", red " NETDATA_DOUBLE_FORMAT_AUTO + ", lookup: group %d" + ", after %d" + ", before %d" + ", options %u" + ", dimensions '%s'" + ", for each dimension '%s'" + ", update every %d" + ", calculation '%s'" + ", warning '%s'" + ", critical '%s'" + ", source '%s'" + ", delay up %d" + ", delay down %d" + ", delay max %d" + ", delay_multiplier %f" + ", warn_repeat_every %u" + ", crit_repeat_every %u", + rrdcalctemplate_name(rt), + (rt->context)?string2str(rt->context):"NONE", + (rt->exec)?rrdcalctemplate_exec(rt):"DEFAULT", + (rt->recipient)?rrdcalctemplate_recipient(rt):"DEFAULT", + rt->green, + rt->red, + (int)rt->group, + rt->after, + rt->before, + rt->options, + (rt->dimensions)?rrdcalctemplate_dimensions(rt):"NONE", + (rt->foreach_dimension)?rrdcalctemplate_foreachdim(rt):"NONE", + rt->update_every, + (rt->calculation)?rt->calculation->parsed_as:"NONE", + (rt->warning)?rt->warning->parsed_as:"NONE", + (rt->critical)?rt->critical->parsed_as:"NONE", + rrdcalctemplate_source(rt), + rt->delay_up_duration, + rt->delay_down_duration, + rt->delay_max_duration, + rt->delay_multiplier, + rt->warn_repeat_every, + rt->crit_repeat_every + ); +} + +static void rrdcalctemplate_delete_callback(const DICTIONARY_ITEM *item __maybe_unused, void *rrdcalctemplate, void *rrdhost __maybe_unused) { + RRDCALCTEMPLATE *rt = rrdcalctemplate; + rrdcalctemplate_free_internals(rt); +} + +void rrdcalctemplate_index_init(RRDHOST *host) { + if(!host->rrdcalctemplate_root_index) { + host->rrdcalctemplate_root_index = dictionary_create_advanced(DICT_OPTION_DONT_OVERWRITE_VALUE | DICT_OPTION_FIXED_SIZE, + &dictionary_stats_category_rrdhealth, sizeof(RRDCALCTEMPLATE)); + + dictionary_register_insert_callback(host->rrdcalctemplate_root_index, rrdcalctemplate_insert_callback, NULL); + dictionary_register_delete_callback(host->rrdcalctemplate_root_index, rrdcalctemplate_delete_callback, host); + } +} + +void rrdcalctemplate_index_destroy(RRDHOST *host) { + dictionary_destroy(host->rrdcalctemplate_root_index); + host->rrdcalctemplate_root_index = NULL; +} + +inline void rrdcalctemplate_delete_all(RRDHOST *host) { + dictionary_flush(host->rrdcalctemplate_root_index); +} + +#define RRDCALCTEMPLATE_MAX_KEY_SIZE 1024 +void rrdcalctemplate_add_from_config(RRDHOST *host, RRDCALCTEMPLATE *rt) { + if(unlikely(!rt->context)) { + netdata_log_error("Health configuration for template '%s' does not have a context", rrdcalctemplate_name(rt)); + return; + } + + if(unlikely(!rt->update_every)) { + netdata_log_error("Health configuration for template '%s' has no frequency (parameter 'every'). Ignoring it.", rrdcalctemplate_name(rt)); + return; + } + + if(unlikely(!RRDCALCTEMPLATE_HAS_DB_LOOKUP(rt) && !rt->calculation && !rt->warning && !rt->critical)) { + netdata_log_error("Health configuration for template '%s' is useless (no calculation, no warning and no critical evaluation)", rrdcalctemplate_name(rt)); + return; + } + + char key[RRDCALCTEMPLATE_MAX_KEY_SIZE + 1]; + size_t key_len = snprintfz(key, RRDCALCTEMPLATE_MAX_KEY_SIZE, "%s", rrdcalctemplate_name(rt)); + + bool added = false; + dictionary_set_advanced(host->rrdcalctemplate_root_index, key, (ssize_t)(key_len + 1), rt, sizeof(*rt), &added); + + if(added) + freez(rt); + else { + netdata_log_info("Health configuration template '%s' already exists for host '%s'.", rrdcalctemplate_name(rt), rrdhost_hostname(host)); + rrdcalctemplate_free_unused_rrdcalctemplate_loaded_from_config(rt); + } +} |