forked from moira-alert/moira
/
event.go
160 lines (134 loc) · 5.47 KB
/
event.go
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package checker
import (
"fmt"
"time"
"github.com/moira-alert/moira"
)
var badStateReminder = map[string]int64{
ERROR: 86400,
NODATA: 86400,
}
func (triggerChecker *TriggerChecker) compareTriggerStates(currentCheck moira.CheckData) (moira.CheckData, error) {
currentStateValue := currentCheck.State
lastStateValue := triggerChecker.lastCheck.State
lastStateSuppressed := triggerChecker.lastCheck.Suppressed
lastStateSuppressedValue := triggerChecker.lastCheck.SuppressedState
timestamp := currentCheck.Timestamp
if triggerChecker.lastCheck.EventTimestamp != 0 {
currentCheck.EventTimestamp = triggerChecker.lastCheck.EventTimestamp
} else {
currentCheck.EventTimestamp = timestamp
}
if lastStateSuppressed && lastStateSuppressedValue == "" {
lastStateSuppressedValue = lastStateValue
}
currentCheck.SuppressedState = lastStateSuppressedValue
needSend, message := needSendEvent(currentStateValue, lastStateValue, timestamp, triggerChecker.lastCheck.GetEventTimestamp(), lastStateSuppressed, lastStateSuppressedValue)
if !needSend {
return currentCheck, nil
}
if message == nil {
message = ¤tCheck.Message
}
eventOldState := lastStateValue
if lastStateSuppressed {
eventOldState = lastStateSuppressedValue
}
event := moira.NotificationEvent{
IsTriggerEvent: true,
TriggerID: triggerChecker.TriggerID,
State: currentStateValue,
OldState: eventOldState,
Timestamp: timestamp,
Metric: triggerChecker.trigger.Name,
Message: message,
}
currentCheck.EventTimestamp = timestamp
currentCheck.Suppressed = false
if triggerChecker.isTriggerSuppressed(&event, timestamp, 0, currentCheck.Maintenance, "") {
currentCheck.Suppressed = true
if !lastStateSuppressed {
currentCheck.SuppressedState = lastStateValue
}
return currentCheck, nil
}
currentCheck.SuppressedState = ""
triggerChecker.Logger.Debugf("Writing new event: %v", event)
err := triggerChecker.Database.PushNotificationEvent(&event, true)
return currentCheck, err
}
func (triggerChecker *TriggerChecker) compareMetricStates(metric string, currentState moira.MetricState, lastState moira.MetricState) (moira.MetricState, error) {
if lastState.EventTimestamp != 0 {
currentState.EventTimestamp = lastState.EventTimestamp
} else {
currentState.EventTimestamp = currentState.Timestamp
}
if lastState.Suppressed && lastState.SuppressedState == "" {
lastState.SuppressedState = lastState.State
}
currentState.SuppressedState = lastState.SuppressedState
needSend, message := needSendEvent(currentState.State, lastState.State, currentState.Timestamp, lastState.GetEventTimestamp(), lastState.Suppressed, lastState.SuppressedState)
if !needSend {
return currentState, nil
}
eventOldState := lastState.State
if lastState.Suppressed {
eventOldState = lastState.SuppressedState
}
event := moira.NotificationEvent{
TriggerID: triggerChecker.TriggerID,
State: currentState.State,
OldState: eventOldState,
Timestamp: currentState.Timestamp,
Metric: metric,
Message: message,
Value: currentState.Value,
}
currentState.EventTimestamp = currentState.Timestamp
currentState.Suppressed = false
if triggerChecker.isTriggerSuppressed(&event, currentState.Timestamp, currentState.Maintenance, triggerChecker.lastCheck.Maintenance, metric) {
currentState.Suppressed = true
if !lastState.Suppressed {
currentState.SuppressedState = lastState.State
}
return currentState, nil
}
currentState.SuppressedState = ""
triggerChecker.Logger.Debugf("Writing new event: %v", event)
err := triggerChecker.Database.PushNotificationEvent(&event, true)
return currentState, err
}
func (triggerChecker *TriggerChecker) isTriggerSuppressed(event *moira.NotificationEvent, timestamp int64, metricMaintenance int64, triggerMaintenance int64, metric string) bool {
if !triggerChecker.trigger.Schedule.IsScheduleAllows(timestamp) {
triggerChecker.Logger.Debugf("Event %v suppressed due to trigger schedule", event)
return true
}
// We must always check triggerMaintenance along with metricMaintenance to avoid cases when metric is not suppressed, but trigger is.
if triggerMaintenance >= timestamp {
triggerChecker.Logger.Debugf("Event %v suppressed due to trigger %s maintenance until %v.", event, triggerChecker.trigger.ID, time.Unix(triggerMaintenance, 0))
return true
}
if metricMaintenance >= timestamp {
triggerChecker.Logger.Debugf("Event %v suppressed due to metric %s maintenance until %v.", event, metric, time.Unix(metricMaintenance, 0))
return true
}
return false
}
func needSendEvent(currentStateValue string, lastStateValue string, currentStateTimestamp int64, lastStateEventTimestamp int64, isLastCheckSuppressed bool, lastStateSuppressedValue string) (needSend bool, message *string) {
if !isLastCheckSuppressed && currentStateValue != lastStateValue {
return true, nil
}
if isLastCheckSuppressed && currentStateValue != lastStateSuppressedValue {
message := "This metric changed its state during maintenance interval."
return true, &message
}
remindInterval, ok := badStateReminder[currentStateValue]
if ok && needRemindAgain(currentStateTimestamp, lastStateEventTimestamp, remindInterval) {
message := fmt.Sprintf("This metric has been in bad state for more than %v hours - please, fix.", remindInterval/3600)
return true, &message
}
return false, nil
}
func needRemindAgain(currentStateTimestamp, lastStateEventTimestamp, remindInterval int64) bool {
return currentStateTimestamp-lastStateEventTimestamp >= remindInterval
}