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refactor alerts and move managers to hub struct

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- resource alerts called from updateSystem to avoid needing to pull from db after update
This commit is contained in:
Henry Dollman
2024-09-29 13:35:38 -04:00
parent 268e364bd4
commit 98563d643d
2 changed files with 65 additions and 57 deletions
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86
beszel/internal/alerts/alerts.go
View File

@@ -39,46 +39,31 @@ func NewAlertManager(app *pocketbase.PocketBase) *AlertManager {
}
}
func (am *AlertManager) HandleSystemAlerts(newStatus string, newRecord *models.Record, oldRecord *models.Record) {
func (am *AlertManager) HandleSystemInfoAlerts(systemRecord *models.Record, systemInfo system.Info) {
alertRecords, err := am.app.Dao().FindRecordsByExpr("alerts",
dbx.NewExp("system = {:system}", dbx.Params{"system": oldRecord.GetId()}),
dbx.NewExp("system={:system}", dbx.Params{"system": systemRecord.GetId()}),
)
if err != nil || len(alertRecords) == 0 {
// log.Println("no alerts found for system")
return
}
// log.Println("found alerts", len(alertRecords))
var systemInfo *system.Info
for _, alertRecord := range alertRecords {
name := alertRecord.GetString("name")
switch name {
case "Status":
am.handleStatusAlerts(newStatus, oldRecord, alertRecord)
case "CPU", "Memory", "Disk":
if newStatus != "up" {
continue
}
if systemInfo == nil {
systemInfo = getSystemInfo(newRecord)
}
if name == "CPU" {
am.handleSlidingValueAlert(newRecord, alertRecord, name, systemInfo.Cpu)
am.handleSlidingValueAlert(systemRecord, alertRecord, name, systemInfo.Cpu)
} else if name == "Memory" {
am.handleSlidingValueAlert(newRecord, alertRecord, name, systemInfo.MemPct)
am.handleSlidingValueAlert(systemRecord, alertRecord, name, systemInfo.MemPct)
} else if name == "Disk" {
am.handleSlidingValueAlert(newRecord, alertRecord, name, systemInfo.DiskPct)
am.handleSlidingValueAlert(systemRecord, alertRecord, name, systemInfo.DiskPct)
}
}
}
}
func getSystemInfo(record *models.Record) *system.Info {
var SystemInfo system.Info
record.UnmarshalJSONField("info", &SystemInfo)
return &SystemInfo
}
func (am *AlertManager) handleSlidingValueAlert(newRecord *models.Record, alertRecord *models.Record, name string, curValue float64) {
func (am *AlertManager) handleSlidingValueAlert(systemRecord *models.Record, alertRecord *models.Record, name string, curValue float64) {
triggered := alertRecord.GetBool("triggered")
threshold := alertRecord.GetFloat("value")
// fmt.Println(name, curValue, "threshold", threshold, "triggered", triggered)
@@ -87,12 +72,12 @@ func (am *AlertManager) handleSlidingValueAlert(newRecord *models.Record, alertR
var systemName string
if !triggered && curValue > threshold {
alertRecord.Set("triggered", true)
systemName = newRecord.GetString("name")
systemName = systemRecord.GetString("name")
subject = fmt.Sprintf("%s usage above threshold on %s", name, systemName)
body = fmt.Sprintf("%s usage on %s is %.1f%%.", name, systemName, curValue)
} else if triggered && curValue <= threshold {
alertRecord.Set("triggered", false)
systemName = newRecord.GetString("name")
systemName = systemRecord.GetString("name")
subject = fmt.Sprintf("%s usage below threshold on %s", name, systemName)
body = fmt.Sprintf("%s usage on %s is below threshold at %.1f%%.", name, systemName, curValue)
} else {
@@ -119,42 +104,55 @@ func (am *AlertManager) handleSlidingValueAlert(newRecord *models.Record, alertR
}
}
func (am *AlertManager) handleStatusAlerts(newStatus string, oldRecord *models.Record, alertRecord *models.Record) error {
func (am *AlertManager) HandleStatusAlerts(newStatus string, oldSystemRecord *models.Record) error {
var alertStatus string
switch newStatus {
case "up":
if oldRecord.GetString("status") == "down" {
if oldSystemRecord.GetString("status") == "down" {
alertStatus = "up"
}
case "down":
if oldRecord.GetString("status") == "up" {
if oldSystemRecord.GetString("status") == "up" {
alertStatus = "down"
}
}
if alertStatus == "" {
return nil
}
// expand the user relation
if errs := am.app.Dao().ExpandRecord(alertRecord, []string{"user"}, nil); len(errs) > 0 {
return fmt.Errorf("failed to expand: %v", errs)
}
user := alertRecord.ExpandedOne("user")
if user == nil {
// check if use
alertRecords, err := am.app.Dao().FindRecordsByExpr("alerts",
dbx.HashExp{
"system": oldSystemRecord.GetId(),
"name": "Status",
},
)
if err != nil || len(alertRecords) == 0 {
// log.Println("no alerts found for system")
return nil
}
emoji := "\U0001F534"
if alertStatus == "up" {
emoji = "\u2705"
for _, alertRecord := range alertRecords {
// expand the user relation
if errs := am.app.Dao().ExpandRecord(alertRecord, []string{"user"}, nil); len(errs) > 0 {
return fmt.Errorf("failed to expand: %v", errs)
}
user := alertRecord.ExpandedOne("user")
if user == nil {
return nil
}
emoji := "\U0001F534"
if alertStatus == "up" {
emoji = "\u2705"
}
// send alert
systemName := oldSystemRecord.GetString("name")
am.sendAlert(AlertData{
UserID: user.GetId(),
Title: fmt.Sprintf("Connection to %s is %s %v", systemName, alertStatus, emoji),
Message: fmt.Sprintf("Connection to %s is %s", systemName, alertStatus),
Link: am.app.Settings().Meta.AppUrl + "/system/" + url.QueryEscape(systemName),
LinkText: "View " + systemName,
})
}
// send alert
systemName := oldRecord.GetString("name")
am.sendAlert(AlertData{
UserID: user.GetId(),
Title: fmt.Sprintf("Connection to %s is %s %v", systemName, alertStatus, emoji),
Message: fmt.Sprintf("Connection to %s is %s", systemName, alertStatus),
Link: am.app.Settings().Meta.AppUrl + "/system/" + url.QueryEscape(systemName),
LinkText: "View " + systemName,
})
return nil
}