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-rw-r--r--health/health.c750
1 files changed, 750 insertions, 0 deletions
diff --git a/health/health.c b/health/health.c
new file mode 100644
index 000000000..ae0c464b1
--- /dev/null
+++ b/health/health.c
@@ -0,0 +1,750 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "health.h"
+
+unsigned int default_health_enabled = 1;
+
+// ----------------------------------------------------------------------------
+// health initialization
+
+inline char *health_user_config_dir(void) {
+ char buffer[FILENAME_MAX + 1];
+ snprintfz(buffer, FILENAME_MAX, "%s/health.d", netdata_configured_user_config_dir);
+ return config_get(CONFIG_SECTION_HEALTH, "health configuration directory", buffer);
+}
+
+inline char *health_stock_config_dir(void) {
+ char buffer[FILENAME_MAX + 1];
+ snprintfz(buffer, FILENAME_MAX, "%s/health.d", netdata_configured_stock_config_dir);
+ return config_get(CONFIG_SECTION_HEALTH, "stock health configuration directory", buffer);
+}
+
+void health_init(void) {
+ debug(D_HEALTH, "Health configuration initializing");
+
+ if(!(default_health_enabled = (unsigned int)config_get_boolean(CONFIG_SECTION_HEALTH, "enabled", default_health_enabled))) {
+ debug(D_HEALTH, "Health is disabled.");
+ return;
+ }
+}
+
+// ----------------------------------------------------------------------------
+// re-load health configuration
+
+void health_reload_host(RRDHOST *host) {
+ if(unlikely(!host->health_enabled))
+ return;
+
+ char *user_path = health_user_config_dir();
+ char *stock_path = health_stock_config_dir();
+
+ // free all running alarms
+ rrdhost_wrlock(host);
+
+ while(host->templates)
+ rrdcalctemplate_unlink_and_free(host, host->templates);
+
+ while(host->alarms)
+ rrdcalc_unlink_and_free(host, host->alarms);
+
+ rrdhost_unlock(host);
+
+ // invalidate all previous entries in the alarm log
+ ALARM_ENTRY *t;
+ for(t = host->health_log.alarms ; t ; t = t->next) {
+ if(t->new_status != RRDCALC_STATUS_REMOVED)
+ t->flags |= HEALTH_ENTRY_FLAG_UPDATED;
+ }
+
+ rrdhost_rdlock(host);
+ // reset all thresholds to all charts
+ RRDSET *st;
+ rrdset_foreach_read(st, host) {
+ st->green = NAN;
+ st->red = NAN;
+ }
+ rrdhost_unlock(host);
+
+ // load the new alarms
+ rrdhost_wrlock(host);
+ health_readdir(host, user_path, stock_path, NULL);
+
+ // link the loaded alarms to their charts
+ rrdset_foreach_write(st, host) {
+ rrdsetcalc_link_matching(st);
+ rrdcalctemplate_link_matching(st);
+ }
+
+ rrdhost_unlock(host);
+}
+
+void health_reload(void) {
+
+ rrd_rdlock();
+
+ RRDHOST *host;
+ rrdhost_foreach_read(host)
+ health_reload_host(host);
+
+ rrd_unlock();
+}
+
+// ----------------------------------------------------------------------------
+// health main thread and friends
+
+static inline RRDCALC_STATUS rrdcalc_value2status(calculated_number n) {
+ if(isnan(n) || isinf(n)) return RRDCALC_STATUS_UNDEFINED;
+ if(n) return RRDCALC_STATUS_RAISED;
+ return RRDCALC_STATUS_CLEAR;
+}
+
+#define ALARM_EXEC_COMMAND_LENGTH 8192
+
+static inline void health_alarm_execute(RRDHOST *host, ALARM_ENTRY *ae) {
+ ae->flags |= HEALTH_ENTRY_FLAG_PROCESSED;
+
+ if(unlikely(ae->new_status < RRDCALC_STATUS_CLEAR)) {
+ // do not send notifications for internal statuses
+ debug(D_HEALTH, "Health not sending notification for alarm '%s.%s' status %s (internal statuses)", ae->chart, ae->name, rrdcalc_status2string(ae->new_status));
+ goto done;
+ }
+
+ if(unlikely(ae->new_status <= RRDCALC_STATUS_CLEAR && (ae->flags & HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION))) {
+ // do not send notifications for disabled statuses
+ debug(D_HEALTH, "Health not sending notification for alarm '%s.%s' status %s (it has no-clear-notification enabled)", ae->chart, ae->name, rrdcalc_status2string(ae->new_status));
+ // mark it as run, so that we will send the same alarm if it happens again
+ goto done;
+ }
+
+ // find the previous notification for the same alarm
+ // which we have run the exec script
+ // exception: alarms with HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION set
+ if(likely(!(ae->flags & HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION))) {
+ uint32_t id = ae->alarm_id;
+ ALARM_ENTRY *t;
+ for(t = ae->next; t ; t = t->next) {
+ if(t->alarm_id == id && t->flags & HEALTH_ENTRY_FLAG_EXEC_RUN)
+ break;
+ }
+
+ if(likely(t)) {
+ // we have executed this alarm notification in the past
+ if(t && t->new_status == ae->new_status) {
+ // don't send the notification for the same status again
+ debug(D_HEALTH, "Health not sending again notification for alarm '%s.%s' status %s", ae->chart, ae->name
+ , rrdcalc_status2string(ae->new_status));
+ goto done;
+ }
+ }
+ else {
+ // we have not executed this alarm notification in the past
+ // so, don't send CLEAR notifications
+ if(unlikely(ae->new_status == RRDCALC_STATUS_CLEAR)) {
+ debug(D_HEALTH, "Health not sending notification for first initialization of alarm '%s.%s' status %s"
+ , ae->chart, ae->name, rrdcalc_status2string(ae->new_status));
+ goto done;
+ }
+ }
+ }
+
+ static char command_to_run[ALARM_EXEC_COMMAND_LENGTH + 1];
+ pid_t command_pid;
+
+ const char *exec = (ae->exec) ? ae->exec : host->health_default_exec;
+ const char *recipient = (ae->recipient) ? ae->recipient : host->health_default_recipient;
+
+ snprintfz(command_to_run, ALARM_EXEC_COMMAND_LENGTH, "exec %s '%s' '%s' '%u' '%u' '%u' '%lu' '%s' '%s' '%s' '%s' '%s' '" CALCULATED_NUMBER_FORMAT_ZERO "' '" CALCULATED_NUMBER_FORMAT_ZERO "' '%s' '%u' '%u' '%s' '%s' '%s' '%s'",
+ exec,
+ recipient,
+ host->registry_hostname,
+ ae->unique_id,
+ ae->alarm_id,
+ ae->alarm_event_id,
+ (unsigned long)ae->when,
+ ae->name,
+ ae->chart?ae->chart:"NOCAHRT",
+ ae->family?ae->family:"NOFAMILY",
+ rrdcalc_status2string(ae->new_status),
+ rrdcalc_status2string(ae->old_status),
+ ae->new_value,
+ ae->old_value,
+ ae->source?ae->source:"UNKNOWN",
+ (uint32_t)ae->duration,
+ (uint32_t)ae->non_clear_duration,
+ ae->units?ae->units:"",
+ ae->info?ae->info:"",
+ ae->new_value_string,
+ ae->old_value_string
+ );
+
+ ae->flags |= HEALTH_ENTRY_FLAG_EXEC_RUN;
+ ae->exec_run_timestamp = now_realtime_sec();
+
+ debug(D_HEALTH, "executing command '%s'", command_to_run);
+ FILE *fp = mypopen(command_to_run, &command_pid);
+ if(!fp) {
+ error("HEALTH: Cannot popen(\"%s\", \"r\").", command_to_run);
+ goto done;
+ }
+ debug(D_HEALTH, "HEALTH reading from command (discarding command's output)");
+ char buffer[100 + 1];
+ while(fgets(buffer, 100, fp) != NULL) ;
+ ae->exec_code = mypclose(fp, command_pid);
+ debug(D_HEALTH, "done executing command - returned with code %d", ae->exec_code);
+
+ if(ae->exec_code != 0)
+ ae->flags |= HEALTH_ENTRY_FLAG_EXEC_FAILED;
+
+done:
+ health_alarm_log_save(host, ae);
+}
+
+static inline void health_process_notifications(RRDHOST *host, ALARM_ENTRY *ae) {
+ debug(D_HEALTH, "Health alarm '%s.%s' = " CALCULATED_NUMBER_FORMAT_AUTO " - changed status from %s to %s",
+ ae->chart?ae->chart:"NOCHART", ae->name,
+ ae->new_value,
+ rrdcalc_status2string(ae->old_status),
+ rrdcalc_status2string(ae->new_status)
+ );
+
+ health_alarm_execute(host, ae);
+}
+
+static inline void health_alarm_log_process(RRDHOST *host) {
+ uint32_t first_waiting = (host->health_log.alarms)?host->health_log.alarms->unique_id:0;
+ time_t now = now_realtime_sec();
+
+ netdata_rwlock_rdlock(&host->health_log.alarm_log_rwlock);
+
+ ALARM_ENTRY *ae;
+ for(ae = host->health_log.alarms; ae && ae->unique_id >= host->health_last_processed_id ; ae = ae->next) {
+ if(unlikely(
+ !(ae->flags & HEALTH_ENTRY_FLAG_PROCESSED) &&
+ !(ae->flags & HEALTH_ENTRY_FLAG_UPDATED)
+ )) {
+
+ if(unlikely(ae->unique_id < first_waiting))
+ first_waiting = ae->unique_id;
+
+ if(likely(now >= ae->delay_up_to_timestamp))
+ health_process_notifications(host, ae);
+ }
+ }
+
+ // remember this for the next iteration
+ host->health_last_processed_id = first_waiting;
+
+ netdata_rwlock_unlock(&host->health_log.alarm_log_rwlock);
+
+ if(host->health_log.count <= host->health_log.max)
+ return;
+
+ // cleanup excess entries in the log
+ netdata_rwlock_wrlock(&host->health_log.alarm_log_rwlock);
+
+ ALARM_ENTRY *last = NULL;
+ unsigned int count = host->health_log.max * 2 / 3;
+ for(ae = host->health_log.alarms; ae && count ; count--, last = ae, ae = ae->next) ;
+
+ if(ae && last && last->next == ae)
+ last->next = NULL;
+ else
+ ae = NULL;
+
+ while(ae) {
+ debug(D_HEALTH, "Health removing alarm log entry with id: %u", ae->unique_id);
+
+ ALARM_ENTRY *t = ae->next;
+
+ health_alarm_log_free_one_nochecks_nounlink(ae);
+
+ ae = t;
+ host->health_log.count--;
+ }
+
+ netdata_rwlock_unlock(&host->health_log.alarm_log_rwlock);
+}
+
+static inline int rrdcalc_isrunnable(RRDCALC *rc, time_t now, time_t *next_run) {
+ if(unlikely(!rc->rrdset)) {
+ debug(D_HEALTH, "Health not running alarm '%s.%s'. It is not linked to a chart.", rc->chart?rc->chart:"NOCHART", rc->name);
+ return 0;
+ }
+
+ if(unlikely(rc->next_update > now)) {
+ if (unlikely(*next_run > rc->next_update)) {
+ // update the next_run time of the main loop
+ // to run this alarm precisely the time required
+ *next_run = rc->next_update;
+ }
+
+ debug(D_HEALTH, "Health not examining alarm '%s.%s' yet (will do in %d secs).", rc->chart?rc->chart:"NOCHART", rc->name, (int) (rc->next_update - now));
+ return 0;
+ }
+
+ if(unlikely(!rc->update_every)) {
+ debug(D_HEALTH, "Health not running alarm '%s.%s'. It does not have an update frequency", rc->chart?rc->chart:"NOCHART", rc->name);
+ return 0;
+ }
+
+ if(unlikely(rrdset_flag_check(rc->rrdset, RRDSET_FLAG_OBSOLETE))) {
+ debug(D_HEALTH, "Health not running alarm '%s.%s'. The chart has been marked as obsolete", rc->chart?rc->chart:"NOCHART", rc->name);
+ return 0;
+ }
+
+ if(unlikely(!rrdset_flag_check(rc->rrdset, RRDSET_FLAG_ENABLED))) {
+ debug(D_HEALTH, "Health not running alarm '%s.%s'. The chart is not enabled", rc->chart?rc->chart:"NOCHART", rc->name);
+ return 0;
+ }
+
+ if(unlikely(!rc->rrdset->last_collected_time.tv_sec || rc->rrdset->counter_done < 2)) {
+ debug(D_HEALTH, "Health not running alarm '%s.%s'. Chart is not fully collected yet.", rc->chart?rc->chart:"NOCHART", rc->name);
+ return 0;
+ }
+
+ int update_every = rc->rrdset->update_every;
+ time_t first = rrdset_first_entry_t(rc->rrdset);
+ time_t last = rrdset_last_entry_t(rc->rrdset);
+
+ if(unlikely(now + update_every < first /* || now - update_every > last */)) {
+ debug(D_HEALTH
+ , "Health not examining alarm '%s.%s' yet (wanted time is out of bounds - we need %lu but got %lu - %lu)."
+ , rc->chart ? rc->chart : "NOCHART", rc->name, (unsigned long) now, (unsigned long) first
+ , (unsigned long) last);
+ return 0;
+ }
+
+ if(RRDCALC_HAS_DB_LOOKUP(rc)) {
+ time_t needed = now + rc->before + rc->after;
+
+ if(needed + update_every < first || needed - update_every > last) {
+ debug(D_HEALTH
+ , "Health not examining alarm '%s.%s' yet (not enough data yet - we need %lu but got %lu - %lu)."
+ , rc->chart ? rc->chart : "NOCHART", rc->name, (unsigned long) needed, (unsigned long) first
+ , (unsigned long) last);
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+static inline int check_if_resumed_from_suspention(void) {
+ static usec_t last_realtime = 0, last_monotonic = 0;
+ usec_t realtime = now_realtime_usec(), monotonic = now_monotonic_usec();
+ int ret = 0;
+
+ // detect if monotonic and realtime have twice the difference
+ // in which case we assume the system was just waken from hibernation
+
+ if(last_realtime && last_monotonic && realtime - last_realtime > 2 * (monotonic - last_monotonic))
+ ret = 1;
+
+ last_realtime = realtime;
+ last_monotonic = monotonic;
+
+ return ret;
+}
+
+static void health_main_cleanup(void *ptr) {
+ struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
+ static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
+
+ info("cleaning up...");
+
+ static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
+}
+
+void *health_main(void *ptr) {
+ netdata_thread_cleanup_push(health_main_cleanup, ptr);
+
+ int min_run_every = (int)config_get_number(CONFIG_SECTION_HEALTH, "run at least every seconds", 10);
+ if(min_run_every < 1) min_run_every = 1;
+
+ time_t now = now_realtime_sec();
+ time_t hibernation_delay = config_get_number(CONFIG_SECTION_HEALTH, "postpone alarms during hibernation for seconds", 60);
+
+ unsigned int loop = 0;
+ while(!netdata_exit) {
+ loop++;
+ debug(D_HEALTH, "Health monitoring iteration no %u started", loop);
+
+ int runnable = 0, apply_hibernation_delay = 0;
+ time_t next_run = now + min_run_every;
+ RRDCALC *rc;
+
+ if(unlikely(check_if_resumed_from_suspention())) {
+ apply_hibernation_delay = 1;
+
+ info("Postponing alarm checks for %ld seconds, because it seems that the system was just resumed from suspension."
+ , hibernation_delay
+ );
+ }
+
+ rrd_rdlock();
+
+ RRDHOST *host;
+ rrdhost_foreach_read(host) {
+ if(unlikely(!host->health_enabled))
+ continue;
+
+ if(unlikely(apply_hibernation_delay)) {
+
+ info("Postponing health checks for %ld seconds, on host '%s'."
+ , hibernation_delay
+ , host->hostname
+ );
+
+ host->health_delay_up_to = now + hibernation_delay;
+ }
+
+ if(unlikely(host->health_delay_up_to)) {
+ if(unlikely(now < host->health_delay_up_to))
+ continue;
+
+ info("Resuming health checks on host '%s'.", host->hostname);
+ host->health_delay_up_to = 0;
+ }
+
+ rrdhost_rdlock(host);
+
+ // the first loop is to lookup values from the db
+ for(rc = host->alarms; rc; rc = rc->next) {
+ if(unlikely(!rrdcalc_isrunnable(rc, now, &next_run))) {
+ if(unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_RUNNABLE))
+ rc->rrdcalc_flags &= ~RRDCALC_FLAG_RUNNABLE;
+ continue;
+ }
+
+ runnable++;
+ rc->old_value = rc->value;
+ rc->rrdcalc_flags |= RRDCALC_FLAG_RUNNABLE;
+
+ // ------------------------------------------------------------
+ // if there is database lookup, do it
+
+ if(unlikely(RRDCALC_HAS_DB_LOOKUP(rc))) {
+ /* time_t old_db_timestamp = rc->db_before; */
+ int value_is_null = 0;
+
+ int ret = rrdset2value_api_v1(rc->rrdset
+ , NULL
+ , &rc->value
+ , rc->dimensions
+ , 1
+ , rc->after
+ , rc->before
+ , rc->group
+ , 0
+ , rc->options
+ , &rc->db_after
+ , &rc->db_before
+ , &value_is_null
+ );
+
+ if(unlikely(ret != 200)) {
+ // database lookup failed
+ rc->value = NAN;
+ rc->rrdcalc_flags |= RRDCALC_FLAG_DB_ERROR;
+
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': database lookup returned error %d"
+ , host->hostname
+ , rc->chart ? rc->chart : "NOCHART"
+ , rc->name
+ , ret
+ );
+ }
+ else
+ rc->rrdcalc_flags &= ~RRDCALC_FLAG_DB_ERROR;
+
+ /* - RRDCALC_FLAG_DB_STALE not currently used
+ if (unlikely(old_db_timestamp == rc->db_before)) {
+ // database is stale
+
+ debug(D_HEALTH, "Health on host '%s', alarm '%s.%s': database is stale", host->hostname, rc->chart?rc->chart:"NOCHART", rc->name);
+
+ if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_DB_STALE))) {
+ rc->rrdcalc_flags |= RRDCALC_FLAG_DB_STALE;
+ error("Health on host '%s', alarm '%s.%s': database is stale", host->hostname, rc->chart?rc->chart:"NOCHART", rc->name);
+ }
+ }
+ else if (unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_DB_STALE))
+ rc->rrdcalc_flags &= ~RRDCALC_FLAG_DB_STALE;
+ */
+
+ if(unlikely(value_is_null)) {
+ // collected value is null
+ rc->value = NAN;
+ rc->rrdcalc_flags |= RRDCALC_FLAG_DB_NAN;
+
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': database lookup returned empty value (possibly value is not collected yet)"
+ , host->hostname
+ , rc->chart ? rc->chart : "NOCHART"
+ , rc->name
+ );
+ }
+ else
+ rc->rrdcalc_flags &= ~RRDCALC_FLAG_DB_NAN;
+
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': database lookup gave value " CALCULATED_NUMBER_FORMAT
+ , host->hostname
+ , rc->chart ? rc->chart : "NOCHART"
+ , rc->name
+ , rc->value
+ );
+ }
+
+ // ------------------------------------------------------------
+ // if there is calculation expression, run it
+
+ if(unlikely(rc->calculation)) {
+ if(unlikely(!expression_evaluate(rc->calculation))) {
+ // calculation failed
+ rc->value = NAN;
+ rc->rrdcalc_flags |= RRDCALC_FLAG_CALC_ERROR;
+
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': expression '%s' failed: %s"
+ , host->hostname
+ , rc->chart ? rc->chart : "NOCHART"
+ , rc->name
+ , rc->calculation->parsed_as
+ , buffer_tostring(rc->calculation->error_msg)
+ );
+ }
+ else {
+ rc->rrdcalc_flags &= ~RRDCALC_FLAG_CALC_ERROR;
+
+ debug(D_HEALTH, "Health on host '%s', alarm '%s.%s': expression '%s' gave value " CALCULATED_NUMBER_FORMAT ": %s (source: %s)"
+ , host->hostname
+ , rc->chart ? rc->chart : "NOCHART"
+ , rc->name
+ , rc->calculation->parsed_as
+ , rc->calculation->result
+ , buffer_tostring(rc->calculation->error_msg)
+ , rc->source
+ );
+
+ rc->value = rc->calculation->result;
+
+ if(rc->local) rc->local->last_updated = now;
+ if(rc->family) rc->family->last_updated = now;
+ if(rc->hostid) rc->hostid->last_updated = now;
+ if(rc->hostname) rc->hostname->last_updated = now;
+ }
+ }
+ }
+ rrdhost_unlock(host);
+
+ if(unlikely(runnable && !netdata_exit)) {
+ rrdhost_rdlock(host);
+
+ for(rc = host->alarms; rc; rc = rc->next) {
+ if(unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_RUNNABLE)))
+ continue;
+
+ RRDCALC_STATUS warning_status = RRDCALC_STATUS_UNDEFINED;
+ RRDCALC_STATUS critical_status = RRDCALC_STATUS_UNDEFINED;
+
+ // --------------------------------------------------------
+ // check the warning expression
+
+ if(likely(rc->warning)) {
+ if(unlikely(!expression_evaluate(rc->warning))) {
+ // calculation failed
+ rc->rrdcalc_flags |= RRDCALC_FLAG_WARN_ERROR;
+
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': warning expression failed with error: %s"
+ , host->hostname
+ , rc->chart ? rc->chart : "NOCHART"
+ , rc->name
+ , buffer_tostring(rc->warning->error_msg)
+ );
+ }
+ else {
+ rc->rrdcalc_flags &= ~RRDCALC_FLAG_WARN_ERROR;
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': warning expression gave value " CALCULATED_NUMBER_FORMAT ": %s (source: %s)"
+ , host->hostname
+ , rc->chart ? rc->chart : "NOCHART"
+ , rc->name
+ , rc->warning->result
+ , buffer_tostring(rc->warning->error_msg)
+ , rc->source
+ );
+ warning_status = rrdcalc_value2status(rc->warning->result);
+ }
+ }
+
+ // --------------------------------------------------------
+ // check the critical expression
+
+ if(likely(rc->critical)) {
+ if(unlikely(!expression_evaluate(rc->critical))) {
+ // calculation failed
+ rc->rrdcalc_flags |= RRDCALC_FLAG_CRIT_ERROR;
+
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': critical expression failed with error: %s"
+ , host->hostname
+ , rc->chart ? rc->chart : "NOCHART"
+ , rc->name
+ , buffer_tostring(rc->critical->error_msg)
+ );
+ }
+ else {
+ rc->rrdcalc_flags &= ~RRDCALC_FLAG_CRIT_ERROR;
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': critical expression gave value " CALCULATED_NUMBER_FORMAT ": %s (source: %s)"
+ , host->hostname
+ , rc->chart ? rc->chart : "NOCHART"
+ , rc->name
+ , rc->critical->result
+ , buffer_tostring(rc->critical->error_msg)
+ , rc->source
+ );
+ critical_status = rrdcalc_value2status(rc->critical->result);
+ }
+ }
+
+ // --------------------------------------------------------
+ // decide the final alarm status
+
+ RRDCALC_STATUS status = RRDCALC_STATUS_UNDEFINED;
+
+ switch(warning_status) {
+ case RRDCALC_STATUS_CLEAR:
+ status = RRDCALC_STATUS_CLEAR;
+ break;
+
+ case RRDCALC_STATUS_RAISED:
+ status = RRDCALC_STATUS_WARNING;
+ break;
+
+ default:
+ break;
+ }
+
+ switch(critical_status) {
+ case RRDCALC_STATUS_CLEAR:
+ if(status == RRDCALC_STATUS_UNDEFINED)
+ status = RRDCALC_STATUS_CLEAR;
+ break;
+
+ case RRDCALC_STATUS_RAISED:
+ status = RRDCALC_STATUS_CRITICAL;
+ break;
+
+ default:
+ break;
+ }
+
+ // --------------------------------------------------------
+ // check if the new status and the old differ
+
+ if(status != rc->status) {
+ int delay = 0;
+
+ // apply trigger hysteresis
+
+ if(now > rc->delay_up_to_timestamp) {
+ rc->delay_up_current = rc->delay_up_duration;
+ rc->delay_down_current = rc->delay_down_duration;
+ rc->delay_last = 0;
+ rc->delay_up_to_timestamp = 0;
+ }
+ else {
+ rc->delay_up_current = (int) (rc->delay_up_current * rc->delay_multiplier);
+ if(rc->delay_up_current > rc->delay_max_duration)
+ rc->delay_up_current = rc->delay_max_duration;
+
+ rc->delay_down_current = (int) (rc->delay_down_current * rc->delay_multiplier);
+ if(rc->delay_down_current > rc->delay_max_duration)
+ rc->delay_down_current = rc->delay_max_duration;
+ }
+
+ if(status > rc->status)
+ delay = rc->delay_up_current;
+ else
+ delay = rc->delay_down_current;
+
+ // COMMENTED: because we do need to send raising alarms
+ // if(now + delay < rc->delay_up_to_timestamp)
+ // delay = (int)(rc->delay_up_to_timestamp - now);
+
+ rc->delay_last = delay;
+ rc->delay_up_to_timestamp = now + delay;
+
+ // add the alarm into the log
+
+ health_alarm_log(
+ host
+ , rc->id
+ , rc->next_event_id++
+ , now
+ , rc->name
+ , rc->rrdset->id
+ , rc->rrdset->family
+ , rc->exec
+ , rc->recipient
+ , now - rc->last_status_change
+ , rc->old_value
+ , rc->value
+ , rc->status
+ , status
+ , rc->source
+ , rc->units
+ , rc->info
+ , rc->delay_last
+ , (rc->options & RRDCALC_FLAG_NO_CLEAR_NOTIFICATION) ? HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION : 0
+ );
+
+ rc->last_status_change = now;
+ rc->status = status;
+ }
+
+ rc->last_updated = now;
+ rc->next_update = now + rc->update_every;
+
+ if(next_run > rc->next_update)
+ next_run = rc->next_update;
+ }
+
+ rrdhost_unlock(host);
+ }
+
+ if(unlikely(netdata_exit))
+ break;
+
+ // execute notifications
+ // and cleanup
+ health_alarm_log_process(host);
+
+ if(unlikely(netdata_exit))
+ break;
+
+ } /* rrdhost_foreach */
+
+ rrd_unlock();
+
+ if(unlikely(netdata_exit))
+ break;
+
+ now = now_realtime_sec();
+ if(now < next_run) {
+ debug(D_HEALTH, "Health monitoring iteration no %u done. Next iteration in %d secs", loop, (int) (next_run - now));
+ sleep_usec(USEC_PER_SEC * (usec_t) (next_run - now));
+ now = now_realtime_sec();
+ }
+ else
+ debug(D_HEALTH, "Health monitoring iteration no %u done. Next iteration now", loop);
+
+ } // forever
+
+ netdata_thread_cleanup_pop(1);
+ return NULL;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-20 14:20:06 +0000