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refactor: add alertsCache to maintain active alert data in memory

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This commit is contained in:
henrygd
2026-03-17 18:32:57 -04:00
parent 48ddc96a0d
commit c6c3950fb0
8 changed files with 628 additions and 57 deletions
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22
internal/alerts/alerts_system.go
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@@ -14,11 +14,8 @@ import (
)
func (am *AlertManager) HandleSystemAlerts(systemRecord *core.Record, data *system.CombinedData) error {
alertRecords, err := am.hub.FindAllRecords("alerts",
dbx.NewExp("system={:system} AND name!='Status'", dbx.Params{"system": systemRecord.Id}),
)
if err != nil || len(alertRecords) == 0 {
// log.Println("no alerts found for system")
alertRecords := am.alertsCache.GetAlertsExcludingNames(systemRecord.Id, "Status")
if len(alertRecords) == 0 {
return nil
}
@@ -27,7 +24,7 @@ func (am *AlertManager) HandleSystemAlerts(systemRecord *core.Record, data *syst
oldestTime := now
for _, alertRecord := range alertRecords {
name := alertRecord.GetString("name")
name := alertRecord.Name
var val float64
unit := "%"
@@ -72,8 +69,8 @@ func (am *AlertManager) HandleSystemAlerts(systemRecord *core.Record, data *syst
val = float64(data.Stats.Battery[0])
}
triggered := alertRecord.GetBool("triggered")
threshold := alertRecord.GetFloat("value")
triggered := alertRecord.Triggered
threshold := alertRecord.Value
// Battery alert has inverted logic: trigger when value is BELOW threshold
lowAlert := isLowAlert(name)
@@ -91,7 +88,7 @@ func (am *AlertManager) HandleSystemAlerts(systemRecord *core.Record, data *syst
}
}
min := max(1, uint8(alertRecord.GetInt("min")))
min := max(1, alertRecord.Min)
alert := SystemAlertData{
systemRecord: systemRecord,
@@ -128,7 +125,7 @@ func (am *AlertManager) HandleSystemAlerts(systemRecord *core.Record, data *syst
Created types.DateTime `db:"created"`
}{}
err = am.hub.DB().
err := am.hub.DB().
Select("stats", "created").
From("system_stats").
Where(dbx.NewExp(
@@ -343,13 +340,12 @@ func (am *AlertManager) sendSystemAlert(alert SystemAlertData) {
}
body := fmt.Sprintf("%s averaged %.2f%s for the previous %v %s.", alert.descriptor, alert.val, alert.unit, alert.min, minutesLabel)
alert.alertRecord.Set("triggered", alert.triggered)
if err := am.hub.Save(alert.alertRecord); err != nil {
if err := am.setAlertTriggered(alert.alertRecord, alert.triggered); err != nil {
// app.Logger().Error("failed to save alert record", "err", err)
return
}
am.SendAlert(AlertMessageData{
UserID: alert.alertRecord.GetString("user"),
UserID: alert.alertRecord.UserID,
SystemID: alert.systemRecord.Id,
Title: subject,
Message: body,