Merging upstream version 1.46.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 869 deletions

diff --git a/database/rrdcalc.c b/database/rrdcalc.c
deleted file mode 100644
index 199d90803..000000000
--- a/database/rrdcalc.c
+++ /dev/null
@@ -1,869 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "rrd.h"
-
-// ----------------------------------------------------------------------------
-// RRDCALC helpers
-
-void rrdcalc_flags_to_json_array(BUFFER *wb, const char *key, RRDCALC_FLAGS flags) {
-    buffer_json_member_add_array(wb, key);
-
-    if(flags & RRDCALC_FLAG_DB_ERROR)
-        buffer_json_add_array_item_string(wb, "DB_ERROR");
-    if(flags & RRDCALC_FLAG_DB_NAN)
-        buffer_json_add_array_item_string(wb, "DB_NAN");
-    if(flags & RRDCALC_FLAG_CALC_ERROR)
-        buffer_json_add_array_item_string(wb, "CALC_ERROR");
-    if(flags & RRDCALC_FLAG_WARN_ERROR)
-        buffer_json_add_array_item_string(wb, "WARN_ERROR");
-    if(flags & RRDCALC_FLAG_CRIT_ERROR)
-        buffer_json_add_array_item_string(wb, "CRIT_ERROR");
-    if(flags & RRDCALC_FLAG_RUNNABLE)
-        buffer_json_add_array_item_string(wb, "RUNNABLE");
-    if(flags & RRDCALC_FLAG_DISABLED)
-        buffer_json_add_array_item_string(wb, "DISABLED");
-    if(flags & RRDCALC_FLAG_SILENCED)
-        buffer_json_add_array_item_string(wb, "SILENCED");
-    if(flags & RRDCALC_FLAG_RUN_ONCE)
-        buffer_json_add_array_item_string(wb, "RUN_ONCE");
-    if(flags & RRDCALC_FLAG_FROM_TEMPLATE)
-        buffer_json_add_array_item_string(wb, "FROM_TEMPLATE");
-
-    buffer_json_array_close(wb);
-}
-
-inline const char *rrdcalc_status2string(RRDCALC_STATUS status) {
-    switch(status) {
-        case RRDCALC_STATUS_REMOVED:
-            return "REMOVED";
-
-        case RRDCALC_STATUS_UNDEFINED:
-            return "UNDEFINED";
-
-        case RRDCALC_STATUS_UNINITIALIZED:
-            return "UNINITIALIZED";
-
-        case RRDCALC_STATUS_CLEAR:
-            return "CLEAR";
-
-        case RRDCALC_STATUS_RAISED:
-            return "RAISED";
-
-        case RRDCALC_STATUS_WARNING:
-            return "WARNING";
-
-        case RRDCALC_STATUS_CRITICAL:
-            return "CRITICAL";
-
-        default:
-            netdata_log_error("Unknown alarm status %d", status);
-            return "UNKNOWN";
-    }
-}
-
-uint32_t rrdcalc_get_unique_id(RRDHOST *host, STRING *chart, STRING *name, uint32_t *next_event_id, uuid_t *config_hash_id) {
-    rw_spinlock_read_lock(&host->health_log.spinlock);
-
-    // re-use old IDs, by looking them up in the alarm log
-    ALARM_ENTRY *ae = NULL;
-    for(ae = host->health_log.alarms; ae ;ae = ae->next) {
-        if(unlikely(name == ae->name && chart == ae->chart && !uuid_memcmp(&ae->config_hash_id, config_hash_id))) {
-            if(next_event_id) *next_event_id = ae->alarm_event_id + 1;
-            break;
-        }
-    }
-
-    uint32_t alarm_id;
-
-    if(ae)
-        alarm_id = ae->alarm_id;
-
-    else {
-        alarm_id = sql_get_alarm_id(host, chart, name, next_event_id, config_hash_id);
-
-        if (!alarm_id) {
-            //check possible stored config hash as zeroes or null
-            alarm_id = sql_get_alarm_id_check_zero_hash(host, chart, name, next_event_id, config_hash_id);
-            if (!alarm_id) {
-                if (unlikely(!host->health_log.next_alarm_id))
-                    host->health_log.next_alarm_id = (uint32_t)now_realtime_sec();
-
-                alarm_id = host->health_log.next_alarm_id++;
-            }
-        }
-    }
-
-    rw_spinlock_read_unlock(&host->health_log.spinlock);
-    return alarm_id;
-}
-
-// ----------------------------------------------------------------------------
-// RRDCALC replacing info/summary text variables with RRDSET labels
-
-static STRING *rrdcalc_replace_variables_with_rrdset_labels(const char *line, RRDCALC *rc) {
-    if (!line || !*line)
-        return NULL;
-
-    size_t pos = 0;
-    char *temp = strdupz(line);
-    char var[RRDCALC_VAR_MAX];
-    char *m, *lbl_value = NULL;
-
-    while ((m = strchr(temp + pos, '$')) && *(m+1) == '{') {
-        int i = 0;
-        char *e = m;
-        while (*e) {
-            var[i++] = *e;
-
-            if (*e == '}' || i == RRDCALC_VAR_MAX - 1)
-                break;
-
-            e++;
-        }
-
-        var[i] = '\0';
-        pos = m - temp + 1;
-
-        if (!strcmp(var, RRDCALC_VAR_FAMILY)) {
-            char *buf = find_and_replace(temp, var, (rc->rrdset && rc->rrdset->family) ? rrdset_family(rc->rrdset) : "", m);
-            freez(temp);
-            temp = buf;
-        }
-        else if (!strncmp(var, RRDCALC_VAR_LABEL, RRDCALC_VAR_LABEL_LEN)) {
-            char label_val[RRDCALC_VAR_MAX + RRDCALC_VAR_LABEL_LEN + 1] = { 0 };
-            strcpy(label_val, var+RRDCALC_VAR_LABEL_LEN);
-            label_val[i - RRDCALC_VAR_LABEL_LEN - 1] = '\0';
-
-            if(likely(rc->rrdset && rc->rrdset->rrdlabels)) {
-                lbl_value = NULL;
-                rrdlabels_get_value_strdup_or_null(rc->rrdset->rrdlabels, &lbl_value, label_val);
-                if (lbl_value) {
-                    char *buf = find_and_replace(temp, var, lbl_value, m);
-                    freez(temp);
-                    temp = buf;
-                    freez(lbl_value);
-                }
-            }
-        }
-    }
-
-    STRING *ret = string_strdupz(temp);
-    freez(temp);
-
-    return ret;
-}
-
-void rrdcalc_update_info_using_rrdset_labels(RRDCALC *rc) {
-    if(!rc->rrdset || !rc->original_info || !rc->rrdset->rrdlabels) return;
-
-    size_t labels_version = rrdlabels_version(rc->rrdset->rrdlabels);
-    if(rc->labels_version != labels_version) {
-
-        if (rc->original_info) {
-            STRING *old = rc->info;
-            rc->info = rrdcalc_replace_variables_with_rrdset_labels(rrdcalc_original_info(rc), rc);
-            string_freez(old);
-        }
-
-         if (rc->original_summary) {
-            STRING *old = rc->summary;
-            rc->summary = rrdcalc_replace_variables_with_rrdset_labels(rrdcalc_original_summary(rc), rc);
-            string_freez(old);
-        }
-
-        rc->labels_version = labels_version;
-    }
-}
-
-// ----------------------------------------------------------------------------
-// RRDCALC index management for RRDSET
-
-// the dictionary requires a unique key for every item
-// we use {chart id}.{alert name} for both the RRDHOST and RRDSET alert indexes.
-
-#define RRDCALC_MAX_KEY_SIZE 1024
-static size_t rrdcalc_key(char *dst, size_t dst_len, const char *chart, const char *alert) {
-    return snprintfz(dst, dst_len, "%s/%s", chart, alert);
-}
-
-const RRDCALC_ACQUIRED *rrdcalc_from_rrdset_get(RRDSET *st, const char *alert_name) {
-    char key[RRDCALC_MAX_KEY_SIZE + 1];
-    size_t key_len = rrdcalc_key(key, RRDCALC_MAX_KEY_SIZE, rrdset_id(st), alert_name);
-
-    const RRDCALC_ACQUIRED *rca = (const RRDCALC_ACQUIRED *)dictionary_get_and_acquire_item_advanced(st->rrdhost->rrdcalc_root_index, key, (ssize_t)(key_len + 1));
-
-    if(!rca) {
-        key_len = rrdcalc_key(key, RRDCALC_MAX_KEY_SIZE, rrdset_name(st), alert_name);
-        rca = (const RRDCALC_ACQUIRED *)dictionary_get_and_acquire_item_advanced(st->rrdhost->rrdcalc_root_index, key, (ssize_t)(key_len + 1));
-    }
-
-    return rca;
-}
-
-void rrdcalc_from_rrdset_release(RRDSET *st, const RRDCALC_ACQUIRED *rca) {
-    if(!rca) return;
-
-    dictionary_acquired_item_release(st->rrdhost->rrdcalc_root_index, (const DICTIONARY_ITEM *)rca);
-}
-
-RRDCALC *rrdcalc_acquired_to_rrdcalc(const RRDCALC_ACQUIRED *rca) {
-    if(rca)
-        return dictionary_acquired_item_value((const DICTIONARY_ITEM *)rca);
-
-    return NULL;
-}
-
-// ----------------------------------------------------------------------------
-// RRDCALC managing the linking with RRDSET
-
-static void rrdcalc_link_to_rrdset(RRDSET *st, RRDCALC *rc) {
-    RRDHOST *host = st->rrdhost;
-
-    netdata_log_debug(D_HEALTH, "Health linking alarm '%s.%s' to chart '%s' of host '%s'", rrdcalc_chart_name(rc), rrdcalc_name(rc), rrdset_id(st), rrdhost_hostname(host));
-
-    rc->last_status_change_value = rc->value;
-    rc->last_status_change = now_realtime_sec();
-    rc->rrdset = st;
-
-    rw_spinlock_write_lock(&st->alerts.spinlock);
-    DOUBLE_LINKED_LIST_APPEND_ITEM_UNSAFE(st->alerts.base, rc, prev, next);
-    rw_spinlock_write_unlock(&st->alerts.spinlock);
-
-    if(rc->update_every < rc->rrdset->update_every) {
-        netdata_log_info("Health alarm '%s.%s' has update every %d, less than chart update every %d. Setting alarm update frequency to %d.", rrdset_id(rc->rrdset), rrdcalc_name(rc), rc->update_every, rc->rrdset->update_every, rc->rrdset->update_every);
-        rc->update_every = rc->rrdset->update_every;
-    }
-
-    if(!isnan(rc->green) && isnan(st->green)) {
-        netdata_log_debug(D_HEALTH, "Health alarm '%s.%s' green threshold set from " NETDATA_DOUBLE_FORMAT_AUTO
-                        " to " NETDATA_DOUBLE_FORMAT_AUTO ".", rrdset_id(rc->rrdset), rrdcalc_name(rc), rc->rrdset->green, rc->green);
-        st->green = rc->green;
-    }
-
-    if(!isnan(rc->red) && isnan(st->red)) {
-        netdata_log_debug(D_HEALTH, "Health alarm '%s.%s' red threshold set from " NETDATA_DOUBLE_FORMAT_AUTO " to " NETDATA_DOUBLE_FORMAT_AUTO
-                        ".", rrdset_id(rc->rrdset), rrdcalc_name(rc), rc->rrdset->red, rc->red);
-        st->red = rc->red;
-    }
-
-    char buf[RRDVAR_MAX_LENGTH + 1];
-    snprintfz(buf, RRDVAR_MAX_LENGTH, "%s.%s", rrdset_name(st), rrdcalc_name(rc));
-    STRING *rrdset_name_rrdcalc_name = string_strdupz(buf);
-    snprintfz(buf, RRDVAR_MAX_LENGTH, "%s.%s", rrdset_id(st), rrdcalc_name(rc));
-    STRING *rrdset_id_rrdcalc_name = string_strdupz(buf);
-
-    rc->rrdvar_local = rrdvar_add_and_acquire(
-        "local",
-        st->rrdvars,
-        rc->name,
-        RRDVAR_TYPE_CALCULATED,
-        RRDVAR_FLAG_RRDCALC_LOCAL_VAR,
-        &rc->value);
-
-    rc->rrdvar_family = rrdvar_add_and_acquire(
-        "family",
-        rrdfamily_rrdvars_dict(st->rrdfamily),
-        rc->name,
-        RRDVAR_TYPE_CALCULATED,
-        RRDVAR_FLAG_RRDCALC_FAMILY_VAR,
-        &rc->value);
-
-    rc->rrdvar_host_chart_name = rrdvar_add_and_acquire(
-        "host",
-        host->rrdvars,
-        rrdset_name_rrdcalc_name,
-        RRDVAR_TYPE_CALCULATED,
-        RRDVAR_FLAG_RRDCALC_HOST_CHARTNAME_VAR,
-        &rc->value);
-
-    rc->rrdvar_host_chart_id = rrdvar_add_and_acquire(
-        "host",
-        host->rrdvars,
-        rrdset_id_rrdcalc_name,
-        RRDVAR_TYPE_CALCULATED,
-        RRDVAR_FLAG_RRDCALC_HOST_CHARTID_VAR | ((rc->rrdvar_host_chart_name) ? 0 : RRDVAR_FLAG_RRDCALC_HOST_CHARTNAME_VAR),
-        &rc->value);
-
-    string_freez(rrdset_id_rrdcalc_name);
-    string_freez(rrdset_name_rrdcalc_name);
-
-    if(!rc->units)
-        rc->units = string_dup(st->units);
-
-    rrdvar_store_for_chart(host, st);
-
-    rrdcalc_update_info_using_rrdset_labels(rc);
-
-    if(!rc->summary) {
-        rc->summary = string_dup(rc->name);
-        rc->original_summary = string_dup(rc->name);
-    }
-
-    time_t now = now_realtime_sec();
-
-    ALARM_ENTRY *ae = health_create_alarm_entry(
-        host,
-        rc->id,
-        rc->next_event_id++,
-        rc->config_hash_id,
-        now,
-        rc->name,
-        rc->rrdset->id,
-        rc->rrdset->context,
-        rc->rrdset->name,
-        rc->classification,
-        rc->component,
-        rc->type,
-        rc->exec,
-        rc->recipient,
-        now - rc->last_status_change,
-        rc->old_value,
-        rc->value,
-        RRDCALC_STATUS_REMOVED,
-        rc->status,
-        rc->source,
-        rc->units,
-        rc->summary,
-        rc->info,
-        0,
-        rrdcalc_isrepeating(rc)?HEALTH_ENTRY_FLAG_IS_REPEATING:0);
-
-    rc->ae = ae;
-    health_alarm_log_add_entry(host, ae);
-    rrdset_flag_set(st, RRDSET_FLAG_HAS_RRDCALC_LINKED);
-}
-
-static void rrdcalc_unlink_from_rrdset(RRDCALC *rc, bool having_ll_wrlock) {
-    RRDSET *st = rc->rrdset;
-
-    if(!st) {
-        netdata_log_debug(D_HEALTH, "Requested to unlink RRDCALC '%s.%s' which is not linked to any RRDSET", rrdcalc_chart_name(rc), rrdcalc_name(rc));
-        netdata_log_error("Requested to unlink RRDCALC '%s.%s' which is not linked to any RRDSET", rrdcalc_chart_name(rc), rrdcalc_name(rc));
-        return;
-    }
-
-    RRDHOST *host = st->rrdhost;
-
-    time_t now = now_realtime_sec();
-
-    if (likely(rc->status != RRDCALC_STATUS_REMOVED)) {
-        ALARM_ENTRY *ae = health_create_alarm_entry(
-            host,
-            rc->id,
-            rc->next_event_id++,
-            rc->config_hash_id,
-            now,
-            rc->name,
-            rc->rrdset->id,
-            rc->rrdset->context,
-            rc->rrdset->name,
-            rc->classification,
-            rc->component,
-            rc->type,
-            rc->exec,
-            rc->recipient,
-            now - rc->last_status_change,
-            rc->old_value,
-            rc->value,
-            rc->status,
-            RRDCALC_STATUS_REMOVED,
-            rc->source,
-            rc->units,
-            rc->summary,
-            rc->info,
-            0,
-            0);
-
-        rc->ae = ae;
-        health_alarm_log_add_entry(host, ae);
-    }
-
-    netdata_log_debug(D_HEALTH, "Health unlinking alarm '%s.%s' from chart '%s' of host '%s'", rrdcalc_chart_name(rc), rrdcalc_name(rc), rrdset_id(st), rrdhost_hostname(host));
-
-    // unlink it
-
-    if(!having_ll_wrlock)
-        rw_spinlock_write_lock(&st->alerts.spinlock);
-
-    DOUBLE_LINKED_LIST_REMOVE_ITEM_UNSAFE(st->alerts.base, rc, prev, next);
-
-    if(!having_ll_wrlock)
-        rw_spinlock_write_unlock(&st->alerts.spinlock);
-
-    rc->rrdset = NULL;
-
-    rrdvar_release_and_del(st->rrdvars, rc->rrdvar_local);
-    rc->rrdvar_local = NULL;
-
-    rrdvar_release_and_del(rrdfamily_rrdvars_dict(st->rrdfamily), rc->rrdvar_family);
-    rc->rrdvar_family = NULL;
-
-    rrdvar_release_and_del(host->rrdvars, rc->rrdvar_host_chart_id);
-    rc->rrdvar_host_chart_id = NULL;
-
-    rrdvar_release_and_del(host->rrdvars, rc->rrdvar_host_chart_name);
-    rc->rrdvar_host_chart_name = NULL;
-
-    // RRDCALC will remain in RRDHOST
-    // so that if the matching chart is found in the future
-    // it will be applied automatically
-}
-
-static inline bool rrdcalc_check_if_it_matches_rrdset(RRDCALC *rc, RRDSET *st) {
-    if (   (rc->chart != st->id)
-        && (rc->chart != st->name))
-        return false;
-
-    if (rc->module_pattern && !simple_pattern_matches_string(rc->module_pattern, st->module_name))
-        return false;
-
-    if (rc->plugin_pattern && !simple_pattern_matches_string(rc->plugin_pattern, st->module_name))
-        return false;
-
-    if (st->rrdhost->rrdlabels && rc->host_labels_pattern && !rrdlabels_match_simple_pattern_parsed(
-            st->rrdhost->rrdlabels, rc->host_labels_pattern, '=', NULL))
-        return false;
-
-    if (st->rrdlabels && rc->chart_labels_pattern && !rrdlabels_match_simple_pattern_parsed(
-            st->rrdlabels, rc->chart_labels_pattern, '=', NULL))
-        return false;
-
-    return true;
-}
-
-void rrdcalc_link_matching_alerts_to_rrdset(RRDSET *st) {
-    RRDHOST *host = st->rrdhost;
-    // netdata_log_debug(D_HEALTH, "find matching alarms for chart '%s'", st->id);
-
-    RRDCALC *rc;
-    foreach_rrdcalc_in_rrdhost_read(host, rc) {
-        if(rc->rrdset)
-            continue;
-
-        if(unlikely(rrdcalc_check_if_it_matches_rrdset(rc, st)))
-            rrdcalc_link_to_rrdset(st, rc);
-    }
-    foreach_rrdcalc_in_rrdhost_done(rc);
-}
-
-static inline int rrdcalc_check_and_link_rrdset_callback(RRDSET *st, void *rrdcalc) {
-    RRDCALC *rc = rrdcalc;
-
-    if(unlikely(rrdcalc_check_if_it_matches_rrdset(rc, st))) {
-        rrdcalc_link_to_rrdset(st, rc);
-        return -1;
-    }
-
-    return 0;
-}
-
-// ----------------------------------------------------------------------------
-// RRDCALC rrdhost index management - constructor
-
-struct rrdcalc_constructor {
-    RRDHOST *rrdhost;                       // the host we operate upon
-    RRDCALC *from_config;                   // points to the original RRDCALC, as loaded from the config
-    RRDCALCTEMPLATE *from_rrdcalctemplate;  // the template this alert is generated from
-    RRDSET *rrdset;                         // when this comes from rrdcalctemplate, we have a matching rrdset
-    const char *overwrite_alert_name;       // when we have a dimension foreach, the alert is renamed
-    const char *overwrite_dimensions;       // when we have a dimension foreach, the dimensions filter is renamed
-
-    enum {
-        RRDCALC_REACT_NONE,
-        RRDCALC_REACT_NEW,
-    } react_action;
-
-    bool existing_from_template;
-};
-
-static void rrdcalc_rrdhost_insert_callback(const DICTIONARY_ITEM *item __maybe_unused, void *rrdcalc, void *constructor_data) {
-    RRDCALC *rc = rrdcalc;
-    struct rrdcalc_constructor *ctr = constructor_data;
-    RRDHOST *host = ctr->rrdhost;
-
-    rc->key = string_strdupz(dictionary_acquired_item_name(item));
-
-    if(ctr->from_rrdcalctemplate) {
-        rc->run_flags |= RRDCALC_FLAG_FROM_TEMPLATE;
-
-        RRDCALCTEMPLATE *rt = ctr->from_rrdcalctemplate;
-        RRDSET *st = ctr->rrdset;
-
-        rc->next_event_id = 1;
-        rc->name = (ctr->overwrite_alert_name) ? string_strdupz(ctr->overwrite_alert_name) : string_dup(rt->name);
-        rc->chart = string_dup(st->id);
-        uuid_copy(rc->config_hash_id, rt->config_hash_id);
-
-        rc->dimensions = (ctr->overwrite_dimensions) ? string_strdupz(ctr->overwrite_dimensions) : string_dup(rt->dimensions);
-        rc->foreach_dimension = NULL;
-        rc->foreach_dimension_pattern = NULL;
-
-        rc->green = rt->green;
-        rc->red = rt->red;
-        rc->value = NAN;
-        rc->old_value = NAN;
-
-        rc->delay_up_duration = rt->delay_up_duration;
-        rc->delay_down_duration = rt->delay_down_duration;
-        rc->delay_max_duration = rt->delay_max_duration;
-        rc->delay_multiplier = rt->delay_multiplier;
-
-        rc->last_repeat = 0;
-        rc->times_repeat = 0;
-        rc->warn_repeat_every = rt->warn_repeat_every;
-        rc->crit_repeat_every = rt->crit_repeat_every;
-
-        rc->group = rt->group;
-        rc->after = rt->after;
-        rc->before = rt->before;
-        rc->update_every = rt->update_every;
-        rc->options = rt->options;
-
-        rc->exec = string_dup(rt->exec);
-        rc->recipient = string_dup(rt->recipient);
-        rc->source = string_dup(rt->source);
-        rc->units = string_dup(rt->units);
-        rc->info = string_dup(rt->info);
-        rc->original_info = string_dup(rt->info);
-
-        if (!rt->summary)
-            rt->summary = string_dup(rc->name);
-        rc->summary = string_dup(rt->summary);
-        rc->original_summary = string_dup(rt->summary);
-
-        rc->classification = string_dup(rt->classification);
-        rc->component = string_dup(rt->component);
-        rc->type = string_dup(rt->type);
-
-        if(rt->calculation) {
-            rc->calculation = expression_parse(rt->calculation->source, NULL, NULL);
-            if(!rc->calculation)
-                netdata_log_error("Health alarm '%s.%s': failed to parse calculation expression '%s'", rrdset_id(st), rrdcalctemplate_name(rt), rt->calculation->source);
-        }
-        if(rt->warning) {
-            rc->warning = expression_parse(rt->warning->source, NULL, NULL);
-            if(!rc->warning)
-                netdata_log_error("Health alarm '%s.%s': failed to re-parse warning expression '%s'", rrdset_id(st), rrdcalctemplate_name(rt), rt->warning->source);
-        }
-        if(rt->critical) {
-            rc->critical = expression_parse(rt->critical->source, NULL, NULL);
-            if(!rc->critical)
-                netdata_log_error("Health alarm '%s.%s': failed to re-parse critical expression '%s'", rrdset_id(st), rrdcalctemplate_name(rt), rt->critical->source);
-        }
-    }
-    else if(ctr->from_config) {
-        // dictionary has already copied all the members values and pointers
-        // no need for additional work in this case
-        ;
-    }
-
-    rc->id = rrdcalc_get_unique_id(host, rc->chart, rc->name, &rc->next_event_id, &rc->config_hash_id);
-
-    if(rc->calculation) {
-        rc->calculation->status = &rc->status;
-        rc->calculation->myself = &rc->value;
-        rc->calculation->after = &rc->db_after;
-        rc->calculation->before = &rc->db_before;
-        rc->calculation->rrdcalc = rc;
-    }
-
-    if(rc->warning) {
-        rc->warning->status = &rc->status;
-        rc->warning->myself = &rc->value;
-        rc->warning->after = &rc->db_after;
-        rc->warning->before = &rc->db_before;
-        rc->warning->rrdcalc = rc;
-    }
-
-    if(rc->critical) {
-        rc->critical->status = &rc->status;
-        rc->critical->myself = &rc->value;
-        rc->critical->after = &rc->db_after;
-        rc->critical->before = &rc->db_before;
-        rc->critical->rrdcalc = rc;
-    }
-
-    netdata_log_debug(D_HEALTH, "Health added alarm '%s.%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",
-          rrdcalc_chart_name(rc),
-          rrdcalc_name(rc),
-          (rc->exec)?rrdcalc_exec(rc):"DEFAULT",
-          (rc->recipient)?rrdcalc_recipient(rc):"DEFAULT",
-          rc->green,
-          rc->red,
-          (int)rc->group,
-          rc->after,
-          rc->before,
-          rc->options,
-          (rc->dimensions)?rrdcalc_dimensions(rc):"NONE",
-          (rc->foreach_dimension)?rrdcalc_foreachdim(rc):"NONE",
-          rc->update_every,
-          (rc->calculation)?rc->calculation->parsed_as:"NONE",
-          (rc->warning)?rc->warning->parsed_as:"NONE",
-          (rc->critical)?rc->critical->parsed_as:"NONE",
-          rrdcalc_source(rc),
-          rc->delay_up_duration,
-          rc->delay_down_duration,
-          rc->delay_max_duration,
-          rc->delay_multiplier,
-          rc->warn_repeat_every,
-          rc->crit_repeat_every
-    );
-
-    ctr->react_action = RRDCALC_REACT_NEW;
-}
-
-static bool rrdcalc_rrdhost_conflict_callback(const DICTIONARY_ITEM *item __maybe_unused, void *rrdcalc, void *rrdcalc_new __maybe_unused, void *constructor_data ) {
-    RRDCALC *rc = rrdcalc;
-    struct rrdcalc_constructor *ctr = constructor_data;
-
-    if(rc->run_flags & RRDCALC_FLAG_FROM_TEMPLATE)
-        ctr->existing_from_template = true;
-    else
-        ctr->existing_from_template = false;
-
-    ctr->react_action = RRDCALC_REACT_NONE;
-
-    return false;
-}
-
-static void rrdcalc_rrdhost_react_callback(const DICTIONARY_ITEM *item __maybe_unused, void *rrdcalc, void *constructor_data) {
-    RRDCALC *rc = rrdcalc;
-    struct rrdcalc_constructor *ctr = constructor_data;
-    RRDHOST *host = ctr->rrdhost;
-
-    if(ctr->react_action == RRDCALC_REACT_NEW) {
-        if(ctr->rrdset)
-            rrdcalc_link_to_rrdset(ctr->rrdset, rc);
-
-        else if (ctr->from_rrdcalctemplate)
-            rrdcontext_foreach_instance_with_rrdset_in_context(host, string2str(ctr->from_rrdcalctemplate->context), rrdcalc_check_and_link_rrdset_callback, rc);
-    }
-}
-
-// ----------------------------------------------------------------------------
-// RRDCALC rrdhost index management - destructor
-
-static void rrdcalc_free_internals(RRDCALC *rc) {
-    if(unlikely(!rc)) return;
-
-    expression_free(rc->calculation);
-    expression_free(rc->warning);
-    expression_free(rc->critical);
-
-    string_freez(rc->key);
-    string_freez(rc->name);
-    string_freez(rc->chart);
-    string_freez(rc->dimensions);
-    string_freez(rc->foreach_dimension);
-    string_freez(rc->exec);
-    string_freez(rc->recipient);
-    string_freez(rc->source);
-    string_freez(rc->units);
-    string_freez(rc->info);
-    string_freez(rc->original_info);
-    string_freez(rc->classification);
-    string_freez(rc->component);
-    string_freez(rc->type);
-    string_freez(rc->host_labels);
-    string_freez(rc->module_match);
-    string_freez(rc->plugin_match);
-    string_freez(rc->chart_labels);
-
-    simple_pattern_free(rc->foreach_dimension_pattern);
-    simple_pattern_free(rc->host_labels_pattern);
-    simple_pattern_free(rc->module_pattern);
-    simple_pattern_free(rc->plugin_pattern);
-    simple_pattern_free(rc->chart_labels_pattern);
-}
-
-static void rrdcalc_rrdhost_delete_callback(const DICTIONARY_ITEM *item __maybe_unused, void *rrdcalc, void *rrdhost __maybe_unused) {
-    RRDCALC *rc = rrdcalc;
-    //RRDHOST *host = rrdhost;
-
-    if(unlikely(rc->rrdset))
-        rrdcalc_unlink_from_rrdset(rc, false);
-
-    // any destruction actions that require other locks
-    // have to be placed in rrdcalc_del(), because the object is actually locked for deletion
-
-    rrdcalc_free_internals(rc);
-}
-
-// ----------------------------------------------------------------------------
-// RRDCALC rrdhost index management - index API
-
-void rrdcalc_rrdhost_index_init(RRDHOST *host) {
-    if(!host->rrdcalc_root_index) {
-        host->rrdcalc_root_index = dictionary_create_advanced(DICT_OPTION_DONT_OVERWRITE_VALUE | DICT_OPTION_FIXED_SIZE,
-                                                              &dictionary_stats_category_rrdhealth, sizeof(RRDCALC));
-
-        dictionary_register_insert_callback(host->rrdcalc_root_index, rrdcalc_rrdhost_insert_callback, NULL);
-        dictionary_register_conflict_callback(host->rrdcalc_root_index, rrdcalc_rrdhost_conflict_callback, NULL);
-        dictionary_register_react_callback(host->rrdcalc_root_index, rrdcalc_rrdhost_react_callback, NULL);
-        dictionary_register_delete_callback(host->rrdcalc_root_index, rrdcalc_rrdhost_delete_callback, host);
-    }
-}
-
-void rrdcalc_rrdhost_index_destroy(RRDHOST *host) {
-    dictionary_destroy(host->rrdcalc_root_index);
-    host->rrdcalc_root_index = NULL;
-}
-
-void rrdcalc_add_from_rrdcalctemplate(RRDHOST *host, RRDCALCTEMPLATE *rt, RRDSET *st, const char *overwrite_alert_name, const char *overwrite_dimensions) {
-    char key[RRDCALC_MAX_KEY_SIZE + 1];
-    size_t key_len = rrdcalc_key(key, RRDCALC_MAX_KEY_SIZE, rrdset_id(st),
-                                 overwrite_alert_name?overwrite_alert_name:string2str(rt->name));
-
-    struct rrdcalc_constructor tmp = {
-        .rrdhost = host,
-        .from_config = NULL,
-        .from_rrdcalctemplate = rt,
-        .rrdset = st,
-        .overwrite_alert_name = overwrite_alert_name,
-        .overwrite_dimensions = overwrite_dimensions,
-        .react_action = RRDCALC_REACT_NONE,
-        .existing_from_template = false,
-    };
-
-    dictionary_set_advanced(host->rrdcalc_root_index, key, (ssize_t)(key_len + 1), NULL, sizeof(RRDCALC), &tmp);
-    if(tmp.react_action != RRDCALC_REACT_NEW && tmp.existing_from_template == false)
-        netdata_log_error("RRDCALC: from template '%s' on chart '%s' with key '%s', failed to be added to host '%s'. It is manually configured.",
-              string2str(rt->name), rrdset_id(st), key, rrdhost_hostname(host));
-}
-
-int rrdcalc_add_from_config(RRDHOST *host, RRDCALC *rc) {
-    if(!rc->chart) {
-        netdata_log_error("Health configuration for alarm '%s' does not have a chart", rrdcalc_name(rc));
-        return 0;
-    }
-
-    if(!rc->update_every) {
-        netdata_log_error("Health configuration for alarm '%s.%s' has no frequency (parameter 'every'). Ignoring it.", rrdcalc_chart_name(rc), rrdcalc_name(rc));
-        return 0;
-    }
-
-    if(!RRDCALC_HAS_DB_LOOKUP(rc) && !rc->calculation && !rc->warning && !rc->critical) {
-        netdata_log_error("Health configuration for alarm '%s.%s' is useless (no db lookup, no calculation, no warning and no critical expressions)", rrdcalc_chart_name(rc), rrdcalc_name(rc));
-        return 0;
-    }
-
-    char key[RRDCALC_MAX_KEY_SIZE + 1];
-    size_t key_len = rrdcalc_key(key, RRDCALC_MAX_KEY_SIZE, string2str(rc->chart), string2str(rc->name));
-
-    struct rrdcalc_constructor tmp = {
-        .rrdhost = host,
-        .from_config = rc,
-        .from_rrdcalctemplate = NULL,
-        .rrdset = NULL,
-        .react_action = RRDCALC_REACT_NONE,
-    };
-
-    int ret = 1;
-    RRDCALC *t = dictionary_set_advanced(host->rrdcalc_root_index, key, (ssize_t)(key_len + 1), rc, sizeof(RRDCALC), &tmp);
-    if(tmp.react_action == RRDCALC_REACT_NEW) {
-        // we copied rc into the dictionary, so we have to free the container here
-        freez(rc);
-        rc = t;
-
-        // since we loaded this config from configuration, we need to check if we can link it to alarms
-        RRDSET *st;
-        rrdset_foreach_read(st, host) {
-            if (unlikely(rrdcalc_check_and_link_rrdset_callback(st, rc) == -1))
-                break;
-        }
-        rrdset_foreach_done(st);
-    }
-    else {
-        netdata_log_error(
-            "RRDCALC: from config '%s' on chart '%s' failed to be added to host '%s'. It already exists.",
-            string2str(rc->name),
-            string2str(rc->chart),
-            rrdhost_hostname(host));
-
-        ret = 0;
-
-        // free all of it, internals and the container
-        rrdcalc_free_unused_rrdcalc_loaded_from_config(rc);
-    }
-
-    return ret;
-}
-
-static void rrdcalc_unlink_and_delete(RRDHOST *host, RRDCALC *rc, bool having_ll_wrlock) {
-    if(rc->rrdset)
-        rrdcalc_unlink_from_rrdset(rc, having_ll_wrlock);
-
-    dictionary_del_advanced(host->rrdcalc_root_index, string2str(rc->key), (ssize_t)string_strlen(rc->key) + 1);
-}
-
-
-// ----------------------------------------------------------------------------
-// RRDCALC cleanup API functions
-
-void rrdcalc_delete_alerts_not_matching_host_labels_from_this_host(RRDHOST *host) {
-    RRDCALC *rc;
-    foreach_rrdcalc_in_rrdhost_reentrant(host, rc) {
-        if (!rc->host_labels)
-            continue;
-
-        if(!rrdlabels_match_simple_pattern_parsed(host->rrdlabels, rc->host_labels_pattern, '=', NULL)) {
-            nd_log(NDLS_DAEMON, NDLP_DEBUG,
-                   "Health configuration for alarm '%s' cannot be applied, "
-                   "because the host %s does not have the label(s) '%s'",
-                   rrdcalc_name(rc), rrdhost_hostname(host), rrdcalc_host_labels(rc));
-
-            rrdcalc_unlink_and_delete(host, rc, false);
-        }
-    }
-    foreach_rrdcalc_in_rrdhost_done(rc);
-}
-
-void rrdcalc_delete_alerts_not_matching_host_labels_from_all_hosts() {
-    RRDHOST *host;
-    dfe_start_reentrant(rrdhost_root_index, host) {
-        if (unlikely(!host->health.health_enabled))
-            continue;
-
-        if (host->rrdlabels)
-            rrdcalc_delete_alerts_not_matching_host_labels_from_this_host(host);
-    }
-    dfe_done(host);
-}
-
-void rrdcalc_unlink_all_rrdset_alerts(RRDSET *st) {
-    RRDCALC *rc, *last = NULL;
-    rw_spinlock_write_lock(&st->alerts.spinlock);
-    while((rc = st->alerts.base)) {
-        if(last == rc) {
-            netdata_log_error("RRDCALC: malformed list of alerts linked to chart - cannot cleanup - giving up.");
-            break;
-        }
-        last = rc;
-
-        if(rc->run_flags & RRDCALC_FLAG_FROM_TEMPLATE) {
-            // if the alert comes from a template we can just delete it
-            rrdcalc_unlink_and_delete(st->rrdhost, rc, true);
-        }
-        else {
-            // this is a configuration for a specific chart
-            // it should stay in the list
-            rrdcalc_unlink_from_rrdset(rc, true);
-        }
-
-    }
-    rw_spinlock_write_unlock(&st->alerts.spinlock);
-}
-
-void rrdcalc_delete_all(RRDHOST *host) {
-    dictionary_flush(host->rrdcalc_root_index);
-}
-
-void rrdcalc_free_unused_rrdcalc_loaded_from_config(RRDCALC *rc) {
-    if(rc->rrdset)
-        rrdcalc_unlink_from_rrdset(rc, false);
-
-    rrdcalc_free_internals(rc);
-    freez(rc);
-}