rename /src to /internal (sorry i'll fix the prs)

This commit is contained in:
henrygd
2025-09-09 13:29:07 -04:00
parent 86ea23fe39
commit 8a13b05c20
177 changed files with 0 additions and 0 deletions

220
internal/alerts/alerts.go Normal file
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// Package alerts handles alert management and delivery.
package alerts
import (
"fmt"
"net/mail"
"net/url"
"sync"
"time"
"github.com/nicholas-fedor/shoutrrr"
"github.com/pocketbase/dbx"
"github.com/pocketbase/pocketbase/core"
"github.com/pocketbase/pocketbase/tools/mailer"
)
type hubLike interface {
core.App
MakeLink(parts ...string) string
}
type AlertManager struct {
hub hubLike
alertQueue chan alertTask
stopChan chan struct{}
pendingAlerts sync.Map
}
type AlertMessageData struct {
UserID string
Title string
Message string
Link string
LinkText string
}
type UserNotificationSettings struct {
Emails []string `json:"emails"`
Webhooks []string `json:"webhooks"`
}
type SystemAlertStats struct {
Cpu float64 `json:"cpu"`
Mem float64 `json:"mp"`
Disk float64 `json:"dp"`
NetSent float64 `json:"ns"`
NetRecv float64 `json:"nr"`
Temperatures map[string]float32 `json:"t"`
LoadAvg [3]float64 `json:"la"`
}
type SystemAlertData struct {
systemRecord *core.Record
alertRecord *core.Record
name string
unit string
val float64
threshold float64
triggered bool
time time.Time
count uint8
min uint8
mapSums map[string]float32
descriptor string // override descriptor in notification body (for temp sensor, disk partition, etc)
}
// notification services that support title param
var supportsTitle = map[string]struct{}{
"bark": {},
"discord": {},
"gotify": {},
"ifttt": {},
"join": {},
"lark": {},
"matrix": {},
"ntfy": {},
"opsgenie": {},
"pushbullet": {},
"pushover": {},
"slack": {},
"teams": {},
"telegram": {},
"zulip": {},
}
// NewAlertManager creates a new AlertManager instance.
func NewAlertManager(app hubLike) *AlertManager {
am := &AlertManager{
hub: app,
alertQueue: make(chan alertTask, 5),
stopChan: make(chan struct{}),
}
am.bindEvents()
go am.startWorker()
return am
}
// Bind events to the alerts collection lifecycle
func (am *AlertManager) bindEvents() {
am.hub.OnRecordAfterUpdateSuccess("alerts").BindFunc(updateHistoryOnAlertUpdate)
am.hub.OnRecordAfterDeleteSuccess("alerts").BindFunc(resolveHistoryOnAlertDelete)
}
// SendAlert sends an alert to the user
func (am *AlertManager) SendAlert(data AlertMessageData) error {
// get user settings
record, err := am.hub.FindFirstRecordByFilter(
"user_settings", "user={:user}",
dbx.Params{"user": data.UserID},
)
if err != nil {
return err
}
// unmarshal user settings
userAlertSettings := UserNotificationSettings{
Emails: []string{},
Webhooks: []string{},
}
if err := record.UnmarshalJSONField("settings", &userAlertSettings); err != nil {
am.hub.Logger().Error("Failed to unmarshal user settings", "err", err)
}
// send alerts via webhooks
for _, webhook := range userAlertSettings.Webhooks {
if err := am.SendShoutrrrAlert(webhook, data.Title, data.Message, data.Link, data.LinkText); err != nil {
am.hub.Logger().Error("Failed to send shoutrrr alert", "err", err)
}
}
// send alerts via email
if len(userAlertSettings.Emails) == 0 {
return nil
}
addresses := []mail.Address{}
for _, email := range userAlertSettings.Emails {
addresses = append(addresses, mail.Address{Address: email})
}
message := mailer.Message{
To: addresses,
Subject: data.Title,
Text: data.Message + fmt.Sprintf("\n\n%s", data.Link),
From: mail.Address{
Address: am.hub.Settings().Meta.SenderAddress,
Name: am.hub.Settings().Meta.SenderName,
},
}
err = am.hub.NewMailClient().Send(&message)
if err != nil {
return err
}
am.hub.Logger().Info("Sent email alert", "to", message.To, "subj", message.Subject)
return nil
}
// SendShoutrrrAlert sends an alert via a Shoutrrr URL
func (am *AlertManager) SendShoutrrrAlert(notificationUrl, title, message, link, linkText string) error {
// Parse the URL
parsedURL, err := url.Parse(notificationUrl)
if err != nil {
return fmt.Errorf("error parsing URL: %v", err)
}
scheme := parsedURL.Scheme
queryParams := parsedURL.Query()
// Add title
if _, ok := supportsTitle[scheme]; ok {
queryParams.Add("title", title)
} else if scheme == "mattermost" {
// use markdown title for mattermost
message = "##### " + title + "\n\n" + message
} else if scheme == "generic" && queryParams.Has("template") {
// add title as property if using generic with template json
titleKey := queryParams.Get("titlekey")
if titleKey == "" {
titleKey = "title"
}
queryParams.Add("$"+titleKey, title)
} else {
// otherwise just add title to message
message = title + "\n\n" + message
}
// Add link
if scheme == "ntfy" {
queryParams.Add("Actions", fmt.Sprintf("view, %s, %s", linkText, link))
} else if scheme == "lark" {
queryParams.Add("link", link)
} else if scheme == "bark" {
queryParams.Add("url", link)
} else {
message += "\n\n" + link
}
// Encode the modified query parameters back into the URL
parsedURL.RawQuery = queryParams.Encode()
// log.Println("URL after modification:", parsedURL.String())
err = shoutrrr.Send(parsedURL.String(), message)
if err == nil {
am.hub.Logger().Info("Sent shoutrrr alert", "title", title)
} else {
am.hub.Logger().Error("Error sending shoutrrr alert", "err", err)
return err
}
return nil
}
func (am *AlertManager) SendTestNotification(e *core.RequestEvent) error {
var data struct {
URL string `json:"url"`
}
err := e.BindBody(&data)
if err != nil || data.URL == "" {
return e.BadRequestError("URL is required", err)
}
err = am.SendShoutrrrAlert(data.URL, "Test Alert", "This is a notification from Beszel.", am.hub.Settings().Meta.AppURL, "View Beszel")
if err != nil {
return e.JSON(200, map[string]string{"err": err.Error()})
}
return e.JSON(200, map[string]bool{"err": false})
}

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package alerts
import (
"database/sql"
"errors"
"net/http"
"github.com/pocketbase/dbx"
"github.com/pocketbase/pocketbase/core"
)
// UpsertUserAlerts handles API request to create or update alerts for a user
// across multiple systems (POST /api/beszel/user-alerts)
func UpsertUserAlerts(e *core.RequestEvent) error {
userID := e.Auth.Id
reqData := struct {
Min uint8 `json:"min"`
Value float64 `json:"value"`
Name string `json:"name"`
Systems []string `json:"systems"`
Overwrite bool `json:"overwrite"`
}{}
err := e.BindBody(&reqData)
if err != nil || userID == "" || reqData.Name == "" || len(reqData.Systems) == 0 {
return e.BadRequestError("Bad data", err)
}
alertsCollection, err := e.App.FindCachedCollectionByNameOrId("alerts")
if err != nil {
return err
}
err = e.App.RunInTransaction(func(txApp core.App) error {
for _, systemId := range reqData.Systems {
// find existing matching alert
alertRecord, err := txApp.FindFirstRecordByFilter(alertsCollection,
"system={:system} && name={:name} && user={:user}",
dbx.Params{"system": systemId, "name": reqData.Name, "user": userID})
if err != nil && !errors.Is(err, sql.ErrNoRows) {
return err
}
// skip if alert already exists and overwrite is not set
if !reqData.Overwrite && alertRecord != nil {
continue
}
// create new alert if it doesn't exist
if alertRecord == nil {
alertRecord = core.NewRecord(alertsCollection)
alertRecord.Set("user", userID)
alertRecord.Set("system", systemId)
alertRecord.Set("name", reqData.Name)
}
alertRecord.Set("value", reqData.Value)
alertRecord.Set("min", reqData.Min)
if err := txApp.SaveNoValidate(alertRecord); err != nil {
return err
}
}
return nil
})
if err != nil {
return err
}
return e.JSON(http.StatusOK, map[string]any{"success": true})
}
// DeleteUserAlerts handles API request to delete alerts for a user across multiple systems
// (DELETE /api/beszel/user-alerts)
func DeleteUserAlerts(e *core.RequestEvent) error {
userID := e.Auth.Id
reqData := struct {
AlertName string `json:"name"`
Systems []string `json:"systems"`
}{}
err := e.BindBody(&reqData)
if err != nil || userID == "" || reqData.AlertName == "" || len(reqData.Systems) == 0 {
return e.BadRequestError("Bad data", err)
}
var numDeleted uint16
err = e.App.RunInTransaction(func(txApp core.App) error {
for _, systemId := range reqData.Systems {
// Find existing alert to delete
alertRecord, err := txApp.FindFirstRecordByFilter("alerts",
"system={:system} && name={:name} && user={:user}",
dbx.Params{"system": systemId, "name": reqData.AlertName, "user": userID})
if err != nil {
if errors.Is(err, sql.ErrNoRows) {
// alert doesn't exist, continue to next system
continue
}
return err
}
if err := txApp.Delete(alertRecord); err != nil {
return err
}
numDeleted++
}
return nil
})
if err != nil {
return err
}
return e.JSON(http.StatusOK, map[string]any{"success": true, "count": numDeleted})
}

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package alerts
import (
"time"
"github.com/pocketbase/dbx"
"github.com/pocketbase/pocketbase/core"
)
// On triggered alert record delete, set matching alert history record to resolved
func resolveHistoryOnAlertDelete(e *core.RecordEvent) error {
if !e.Record.GetBool("triggered") {
return e.Next()
}
_ = resolveAlertHistoryRecord(e.App, e.Record.Id)
return e.Next()
}
// On alert record update, update alert history record
func updateHistoryOnAlertUpdate(e *core.RecordEvent) error {
original := e.Record.Original()
new := e.Record
originalTriggered := original.GetBool("triggered")
newTriggered := new.GetBool("triggered")
// no need to update alert history if triggered state has not changed
if originalTriggered == newTriggered {
return e.Next()
}
// if new state is triggered, create new alert history record
if newTriggered {
_, _ = createAlertHistoryRecord(e.App, new)
return e.Next()
}
// if new state is not triggered, check for matching alert history record and set it to resolved
_ = resolveAlertHistoryRecord(e.App, new.Id)
return e.Next()
}
// resolveAlertHistoryRecord sets the resolved field to the current time
func resolveAlertHistoryRecord(app core.App, alertRecordID string) error {
alertHistoryRecord, err := app.FindFirstRecordByFilter("alerts_history", "alert_id={:alert_id} && resolved=null", dbx.Params{"alert_id": alertRecordID})
if err != nil || alertHistoryRecord == nil {
return err
}
alertHistoryRecord.Set("resolved", time.Now().UTC())
err = app.Save(alertHistoryRecord)
if err != nil {
app.Logger().Error("Failed to resolve alert history", "err", err)
}
return err
}
// createAlertHistoryRecord creates a new alert history record
func createAlertHistoryRecord(app core.App, alertRecord *core.Record) (alertHistoryRecord *core.Record, err error) {
alertHistoryCollection, err := app.FindCachedCollectionByNameOrId("alerts_history")
if err != nil {
return nil, err
}
alertHistoryRecord = core.NewRecord(alertHistoryCollection)
alertHistoryRecord.Set("alert_id", alertRecord.Id)
alertHistoryRecord.Set("user", alertRecord.GetString("user"))
alertHistoryRecord.Set("system", alertRecord.GetString("system"))
alertHistoryRecord.Set("name", alertRecord.GetString("name"))
alertHistoryRecord.Set("value", alertRecord.GetFloat("value"))
err = app.Save(alertHistoryRecord)
if err != nil {
app.Logger().Error("Failed to save alert history", "err", err)
}
return alertHistoryRecord, err
}

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package alerts
import (
"fmt"
"strings"
"time"
"github.com/pocketbase/dbx"
"github.com/pocketbase/pocketbase/core"
)
type alertTask struct {
action string // "schedule" or "cancel"
systemName string
alertRecord *core.Record
delay time.Duration
}
type alertInfo struct {
systemName string
alertRecord *core.Record
expireTime time.Time
}
// startWorker is a long-running goroutine that processes alert tasks
// every x seconds. It must be running to process status alerts.
func (am *AlertManager) startWorker() {
tick := time.Tick(15 * time.Second)
for {
select {
case <-am.stopChan:
return
case task := <-am.alertQueue:
switch task.action {
case "schedule":
am.pendingAlerts.Store(task.alertRecord.Id, &alertInfo{
systemName: task.systemName,
alertRecord: task.alertRecord,
expireTime: time.Now().Add(task.delay),
})
case "cancel":
am.pendingAlerts.Delete(task.alertRecord.Id)
}
case <-tick:
// Check for expired alerts every tick
now := time.Now()
for key, value := range am.pendingAlerts.Range {
info := value.(*alertInfo)
if now.After(info.expireTime) {
// Downtime delay has passed, process alert
am.sendStatusAlert("down", info.systemName, info.alertRecord)
am.pendingAlerts.Delete(key)
}
}
}
}
}
// StopWorker shuts down the AlertManager.worker goroutine
func (am *AlertManager) StopWorker() {
close(am.stopChan)
}
// HandleStatusAlerts manages the logic when system status changes.
func (am *AlertManager) HandleStatusAlerts(newStatus string, systemRecord *core.Record) error {
if newStatus != "up" && newStatus != "down" {
return nil
}
alertRecords, err := am.getSystemStatusAlerts(systemRecord.Id)
if err != nil {
return err
}
if len(alertRecords) == 0 {
return nil
}
systemName := systemRecord.GetString("name")
if newStatus == "down" {
am.handleSystemDown(systemName, alertRecords)
} else {
am.handleSystemUp(systemName, alertRecords)
}
return nil
}
// getSystemStatusAlerts retrieves all "Status" alert records for a given system ID.
func (am *AlertManager) getSystemStatusAlerts(systemID string) ([]*core.Record, error) {
alertRecords, err := am.hub.FindAllRecords("alerts", dbx.HashExp{
"system": systemID,
"name": "Status",
})
if err != nil {
return nil, err
}
return alertRecords, nil
}
// Schedules delayed "down" alerts for each alert record.
func (am *AlertManager) handleSystemDown(systemName string, alertRecords []*core.Record) {
for _, alertRecord := range alertRecords {
// Continue if alert is already scheduled
if _, exists := am.pendingAlerts.Load(alertRecord.Id); exists {
continue
}
// Schedule by adding to queue
min := max(1, alertRecord.GetInt("min"))
am.alertQueue <- alertTask{
action: "schedule",
systemName: systemName,
alertRecord: alertRecord,
delay: time.Duration(min) * time.Minute,
}
}
}
// handleSystemUp manages the logic when a system status changes to "up".
// It cancels any pending alerts and sends "up" alerts.
func (am *AlertManager) handleSystemUp(systemName string, alertRecords []*core.Record) {
for _, alertRecord := range alertRecords {
alertRecordID := alertRecord.Id
// If alert exists for record, delete and continue (down alert not sent)
if _, exists := am.pendingAlerts.Load(alertRecordID); exists {
am.alertQueue <- alertTask{
action: "cancel",
alertRecord: alertRecord,
}
continue
}
// No alert scheduled for this record, send "up" alert
if err := am.sendStatusAlert("up", systemName, alertRecord); err != nil {
am.hub.Logger().Error("Failed to send alert", "err", err)
}
}
}
// sendStatusAlert sends a status alert ("up" or "down") to the users associated with the alert records.
func (am *AlertManager) sendStatusAlert(alertStatus string, systemName string, alertRecord *core.Record) error {
switch alertStatus {
case "up":
alertRecord.Set("triggered", false)
case "down":
alertRecord.Set("triggered", true)
}
am.hub.Save(alertRecord)
var emoji string
if alertStatus == "up" {
emoji = "\u2705" // Green checkmark emoji
} else {
emoji = "\U0001F534" // Red alert emoji
}
title := fmt.Sprintf("Connection to %s is %s %v", systemName, alertStatus, emoji)
message := strings.TrimSuffix(title, emoji)
// if errs := am.hub.ExpandRecord(alertRecord, []string{"user"}, nil); len(errs) > 0 {
// return errs["user"]
// }
// user := alertRecord.ExpandedOne("user")
// if user == nil {
// return nil
// }
return am.SendAlert(AlertMessageData{
UserID: alertRecord.GetString("user"),
Title: title,
Message: message,
Link: am.hub.MakeLink("system", systemName),
LinkText: "View " + systemName,
})
}

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package alerts
import (
"encoding/json"
"fmt"
"strings"
"time"
"github.com/henrygd/beszel/src/entities/system"
"github.com/pocketbase/dbx"
"github.com/pocketbase/pocketbase/core"
"github.com/pocketbase/pocketbase/tools/types"
"github.com/spf13/cast"
)
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")
return nil
}
var validAlerts []SystemAlertData
now := systemRecord.GetDateTime("updated").Time().UTC()
oldestTime := now
for _, alertRecord := range alertRecords {
name := alertRecord.GetString("name")
var val float64
unit := "%"
switch name {
case "CPU":
val = data.Info.Cpu
case "Memory":
val = data.Info.MemPct
case "Bandwidth":
val = data.Info.Bandwidth
unit = " MB/s"
case "Disk":
maxUsedPct := data.Info.DiskPct
for _, fs := range data.Stats.ExtraFs {
usedPct := fs.DiskUsed / fs.DiskTotal * 100
if usedPct > maxUsedPct {
maxUsedPct = usedPct
}
}
val = maxUsedPct
case "Temperature":
if data.Info.DashboardTemp < 1 {
continue
}
val = data.Info.DashboardTemp
unit = "°C"
case "LoadAvg1":
val = data.Info.LoadAvg[0]
unit = ""
case "LoadAvg5":
val = data.Info.LoadAvg[1]
unit = ""
case "LoadAvg15":
val = data.Info.LoadAvg[2]
unit = ""
}
triggered := alertRecord.GetBool("triggered")
threshold := alertRecord.GetFloat("value")
// CONTINUE
// IF alert is not triggered and curValue is less than threshold
// OR alert is triggered and curValue is greater than threshold
if (!triggered && val <= threshold) || (triggered && val > threshold) {
// log.Printf("Skipping alert %s: val %f | threshold %f | triggered %v\n", name, val, threshold, triggered)
continue
}
min := max(1, cast.ToUint8(alertRecord.Get("min")))
alert := SystemAlertData{
systemRecord: systemRecord,
alertRecord: alertRecord,
name: name,
unit: unit,
val: val,
threshold: threshold,
triggered: triggered,
min: min,
}
// send alert immediately if min is 1 - no need to sum up values.
if min == 1 {
alert.triggered = val > threshold
go am.sendSystemAlert(alert)
continue
}
alert.time = now.Add(-time.Duration(min) * time.Minute)
if alert.time.Before(oldestTime) {
oldestTime = alert.time
}
validAlerts = append(validAlerts, alert)
}
systemStats := []struct {
Stats []byte `db:"stats"`
Created types.DateTime `db:"created"`
}{}
err = am.hub.DB().
Select("stats", "created").
From("system_stats").
Where(dbx.NewExp(
"system={:system} AND type='1m' AND created > {:created}",
dbx.Params{
"system": systemRecord.Id,
// subtract some time to give us a bit of buffer
"created": oldestTime.Add(-time.Second * 90),
},
)).
OrderBy("created").
All(&systemStats)
if err != nil || len(systemStats) == 0 {
return err
}
// get oldest record creation time from first record in the slice
oldestRecordTime := systemStats[0].Created.Time()
// log.Println("oldestRecordTime", oldestRecordTime.String())
// Filter validAlerts to keep only those with time newer than oldestRecord
filteredAlerts := make([]SystemAlertData, 0, len(validAlerts))
for _, alert := range validAlerts {
if alert.time.After(oldestRecordTime) {
filteredAlerts = append(filteredAlerts, alert)
}
}
validAlerts = filteredAlerts
if len(validAlerts) == 0 {
// log.Println("no valid alerts found")
return nil
}
var stats SystemAlertStats
// we can skip the latest systemStats record since it's the current value
for i := range systemStats {
stat := systemStats[i]
// subtract 10 seconds to give a small time buffer
systemStatsCreation := stat.Created.Time().Add(-time.Second * 10)
if err := json.Unmarshal(stat.Stats, &stats); err != nil {
return err
}
// log.Println("stats", stats)
for j := range validAlerts {
alert := &validAlerts[j]
// reset alert val on first iteration
if i == 0 {
alert.val = 0
}
// continue if system_stats is older than alert time range
if systemStatsCreation.Before(alert.time) {
continue
}
// add to alert value
switch alert.name {
case "CPU":
alert.val += stats.Cpu
case "Memory":
alert.val += stats.Mem
case "Bandwidth":
alert.val += stats.NetSent + stats.NetRecv
case "Disk":
if alert.mapSums == nil {
alert.mapSums = make(map[string]float32, len(data.Stats.ExtraFs)+1)
}
// add root disk
if _, ok := alert.mapSums["root"]; !ok {
alert.mapSums["root"] = 0.0
}
alert.mapSums["root"] += float32(stats.Disk)
// add extra disks
for key, fs := range data.Stats.ExtraFs {
if _, ok := alert.mapSums[key]; !ok {
alert.mapSums[key] = 0.0
}
alert.mapSums[key] += float32(fs.DiskUsed / fs.DiskTotal * 100)
}
case "Temperature":
if alert.mapSums == nil {
alert.mapSums = make(map[string]float32, len(stats.Temperatures))
}
for key, temp := range stats.Temperatures {
if _, ok := alert.mapSums[key]; !ok {
alert.mapSums[key] = float32(0)
}
alert.mapSums[key] += temp
}
case "LoadAvg1":
alert.val += stats.LoadAvg[0]
case "LoadAvg5":
alert.val += stats.LoadAvg[1]
case "LoadAvg15":
alert.val += stats.LoadAvg[2]
default:
continue
}
alert.count++
}
}
// sum up vals for each alert
for _, alert := range validAlerts {
switch alert.name {
case "Disk":
maxPct := float32(0)
for key, value := range alert.mapSums {
sumPct := float32(value)
if sumPct > maxPct {
maxPct = sumPct
alert.descriptor = fmt.Sprintf("Usage of %s", key)
}
}
alert.val = float64(maxPct / float32(alert.count))
case "Temperature":
maxTemp := float32(0)
for key, value := range alert.mapSums {
sumTemp := float32(value) / float32(alert.count)
if sumTemp > maxTemp {
maxTemp = sumTemp
alert.descriptor = fmt.Sprintf("Highest sensor %s", key)
}
}
alert.val = float64(maxTemp)
default:
alert.val = alert.val / float64(alert.count)
}
minCount := float32(alert.min) / 1.2
// log.Println("alert", alert.name, "val", alert.val, "threshold", alert.threshold, "triggered", alert.triggered)
// log.Printf("%s: val %f | count %d | min-count %f | threshold %f\n", alert.name, alert.val, alert.count, minCount, alert.threshold)
// pass through alert if count is greater than or equal to minCount
if float32(alert.count) >= minCount {
if !alert.triggered && alert.val > alert.threshold {
alert.triggered = true
go am.sendSystemAlert(alert)
} else if alert.triggered && alert.val <= alert.threshold {
alert.triggered = false
go am.sendSystemAlert(alert)
}
}
}
return nil
}
func (am *AlertManager) sendSystemAlert(alert SystemAlertData) {
// log.Printf("Sending alert %s: val %f | count %d | threshold %f\n", alert.name, alert.val, alert.count, alert.threshold)
systemName := alert.systemRecord.GetString("name")
// change Disk to Disk usage
if alert.name == "Disk" {
alert.name += " usage"
}
// format LoadAvg5 and LoadAvg15
if after, ok := strings.CutPrefix(alert.name, "LoadAvg"); ok {
alert.name = after + "m Load"
}
// make title alert name lowercase if not CPU
titleAlertName := alert.name
if titleAlertName != "CPU" {
titleAlertName = strings.ToLower(titleAlertName)
}
var subject string
if alert.triggered {
subject = fmt.Sprintf("%s %s above threshold", systemName, titleAlertName)
} else {
subject = fmt.Sprintf("%s %s below threshold", systemName, titleAlertName)
}
minutesLabel := "minute"
if alert.min > 1 {
minutesLabel += "s"
}
if alert.descriptor == "" {
alert.descriptor = alert.name
}
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 {
// app.Logger().Error("failed to save alert record", "err", err)
return
}
am.SendAlert(AlertMessageData{
UserID: alert.alertRecord.GetString("user"),
Title: subject,
Message: body,
Link: am.hub.MakeLink("system", systemName),
LinkText: "View " + systemName,
})
}

View File

@@ -0,0 +1,604 @@
//go:build testing
// +build testing
package alerts_test
import (
"bytes"
"encoding/json"
"io"
"net/http"
"strings"
"testing"
"testing/synctest"
"time"
beszelTests "github.com/henrygd/beszel/src/tests"
"github.com/pocketbase/dbx"
"github.com/pocketbase/pocketbase/core"
pbTests "github.com/pocketbase/pocketbase/tests"
"github.com/stretchr/testify/assert"
)
// marshal to json and return an io.Reader (for use in ApiScenario.Body)
func jsonReader(v any) io.Reader {
data, err := json.Marshal(v)
if err != nil {
panic(err)
}
return bytes.NewReader(data)
}
func TestUserAlertsApi(t *testing.T) {
hub, _ := beszelTests.NewTestHub(t.TempDir())
defer hub.Cleanup()
hub.StartHub()
user1, _ := beszelTests.CreateUser(hub, "alertstest@example.com", "password")
user1Token, _ := user1.NewAuthToken()
user2, _ := beszelTests.CreateUser(hub, "alertstest2@example.com", "password")
user2Token, _ := user2.NewAuthToken()
system1, _ := beszelTests.CreateRecord(hub, "systems", map[string]any{
"name": "system1",
"users": []string{user1.Id},
"host": "127.0.0.1",
})
system2, _ := beszelTests.CreateRecord(hub, "systems", map[string]any{
"name": "system2",
"users": []string{user1.Id, user2.Id},
"host": "127.0.0.2",
})
userRecords, _ := hub.CountRecords("users")
assert.EqualValues(t, 2, userRecords, "all users should be created")
systemRecords, _ := hub.CountRecords("systems")
assert.EqualValues(t, 2, systemRecords, "all systems should be created")
testAppFactory := func(t testing.TB) *pbTests.TestApp {
return hub.TestApp
}
scenarios := []beszelTests.ApiScenario{
// {
// Name: "GET not implemented - returns index",
// Method: http.MethodGet,
// URL: "/api/beszel/user-alerts",
// ExpectedStatus: 200,
// ExpectedContent: []string{"<html ", "globalThis.BESZEL"},
// TestAppFactory: testAppFactory,
// },
{
Name: "POST no auth",
Method: http.MethodPost,
URL: "/api/beszel/user-alerts",
ExpectedStatus: 401,
ExpectedContent: []string{"requires valid"},
TestAppFactory: testAppFactory,
},
{
Name: "POST no body",
Method: http.MethodPost,
URL: "/api/beszel/user-alerts",
Headers: map[string]string{
"Authorization": user1Token,
},
ExpectedStatus: 400,
ExpectedContent: []string{"Bad data"},
TestAppFactory: testAppFactory,
},
{
Name: "POST bad data",
Method: http.MethodPost,
URL: "/api/beszel/user-alerts",
Headers: map[string]string{
"Authorization": user1Token,
},
ExpectedStatus: 400,
ExpectedContent: []string{"Bad data"},
TestAppFactory: testAppFactory,
Body: jsonReader(map[string]any{
"invalidField": "this should cause validation error",
"threshold": "not a number",
}),
},
{
Name: "POST malformed JSON",
Method: http.MethodPost,
URL: "/api/beszel/user-alerts",
Headers: map[string]string{
"Authorization": user1Token,
},
ExpectedStatus: 400,
ExpectedContent: []string{"Bad data"},
TestAppFactory: testAppFactory,
Body: strings.NewReader(`{"alertType": "cpu", "threshold": 80, "enabled": true,}`),
},
{
Name: "POST valid alert data multiple systems",
Method: http.MethodPost,
URL: "/api/beszel/user-alerts",
Headers: map[string]string{
"Authorization": user1Token,
},
ExpectedStatus: 200,
ExpectedContent: []string{"\"success\":true"},
TestAppFactory: testAppFactory,
Body: jsonReader(map[string]any{
"name": "CPU",
"value": 69,
"min": 9,
"systems": []string{system1.Id, system2.Id},
"overwrite": false,
}),
AfterTestFunc: func(t testing.TB, app *pbTests.TestApp, res *http.Response) {
// check total alerts
alerts, _ := app.CountRecords("alerts")
assert.EqualValues(t, 2, alerts, "should have 2 alerts")
// check alert has correct values
matchingAlerts, _ := app.CountRecords("alerts", dbx.HashExp{"name": "CPU", "user": user1.Id, "system": system1.Id, "value": 69, "min": 9})
assert.EqualValues(t, 1, matchingAlerts, "should have 1 alert")
},
},
{
Name: "POST valid alert data single system",
Method: http.MethodPost,
URL: "/api/beszel/user-alerts",
Headers: map[string]string{
"Authorization": user1Token,
},
ExpectedStatus: 200,
ExpectedContent: []string{"\"success\":true"},
TestAppFactory: testAppFactory,
Body: jsonReader(map[string]any{
"name": "Memory",
"systems": []string{system1.Id},
"value": 90,
"min": 10,
}),
AfterTestFunc: func(t testing.TB, app *pbTests.TestApp, res *http.Response) {
user1Alerts, _ := app.CountRecords("alerts", dbx.HashExp{"user": user1.Id})
assert.EqualValues(t, 3, user1Alerts, "should have 3 alerts")
},
},
{
Name: "Overwrite: false, should not overwrite existing alert",
Method: http.MethodPost,
URL: "/api/beszel/user-alerts",
Headers: map[string]string{
"Authorization": user1Token,
},
ExpectedStatus: 200,
ExpectedContent: []string{"\"success\":true"},
TestAppFactory: testAppFactory,
Body: jsonReader(map[string]any{
"name": "CPU",
"value": 45,
"min": 5,
"systems": []string{system1.Id},
"overwrite": false,
}),
BeforeTestFunc: func(t testing.TB, app *pbTests.TestApp, e *core.ServeEvent) {
beszelTests.ClearCollection(t, app, "alerts")
beszelTests.CreateRecord(app, "alerts", map[string]any{
"name": "CPU",
"system": system1.Id,
"user": user1.Id,
"value": 80,
"min": 10,
})
},
AfterTestFunc: func(t testing.TB, app *pbTests.TestApp, res *http.Response) {
alerts, _ := app.CountRecords("alerts")
assert.EqualValues(t, 1, alerts, "should have 1 alert")
alert, _ := app.FindFirstRecordByFilter("alerts", "name = 'CPU' && user = {:user}", dbx.Params{"user": user1.Id})
assert.EqualValues(t, 80, alert.Get("value"), "should have 80 as value")
},
},
{
Name: "Overwrite: true, should overwrite existing alert",
Method: http.MethodPost,
URL: "/api/beszel/user-alerts",
Headers: map[string]string{
"Authorization": user2Token,
},
ExpectedStatus: 200,
ExpectedContent: []string{"\"success\":true"},
TestAppFactory: testAppFactory,
Body: jsonReader(map[string]any{
"name": "CPU",
"value": 45,
"min": 5,
"systems": []string{system2.Id},
"overwrite": true,
}),
BeforeTestFunc: func(t testing.TB, app *pbTests.TestApp, e *core.ServeEvent) {
beszelTests.ClearCollection(t, app, "alerts")
beszelTests.CreateRecord(app, "alerts", map[string]any{
"name": "CPU",
"system": system2.Id,
"user": user2.Id,
"value": 80,
"min": 10,
})
},
AfterTestFunc: func(t testing.TB, app *pbTests.TestApp, res *http.Response) {
alerts, _ := app.CountRecords("alerts")
assert.EqualValues(t, 1, alerts, "should have 1 alert")
alert, _ := app.FindFirstRecordByFilter("alerts", "name = 'CPU' && user = {:user}", dbx.Params{"user": user2.Id})
assert.EqualValues(t, 45, alert.Get("value"), "should have 45 as value")
},
},
{
Name: "DELETE no auth",
Method: http.MethodDelete,
URL: "/api/beszel/user-alerts",
ExpectedStatus: 401,
ExpectedContent: []string{"requires valid"},
TestAppFactory: testAppFactory,
Body: jsonReader(map[string]any{
"name": "CPU",
"systems": []string{system1.Id},
}),
BeforeTestFunc: func(t testing.TB, app *pbTests.TestApp, e *core.ServeEvent) {
beszelTests.ClearCollection(t, app, "alerts")
beszelTests.CreateRecord(app, "alerts", map[string]any{
"name": "CPU",
"system": system1.Id,
"user": user1.Id,
"value": 80,
"min": 10,
})
},
AfterTestFunc: func(t testing.TB, app *pbTests.TestApp, res *http.Response) {
alerts, _ := app.CountRecords("alerts")
assert.EqualValues(t, 1, alerts, "should have 1 alert")
},
},
{
Name: "DELETE alert",
Method: http.MethodDelete,
URL: "/api/beszel/user-alerts",
Headers: map[string]string{
"Authorization": user1Token,
},
ExpectedStatus: 200,
ExpectedContent: []string{"\"count\":1", "\"success\":true"},
TestAppFactory: testAppFactory,
Body: jsonReader(map[string]any{
"name": "CPU",
"systems": []string{system1.Id},
}),
BeforeTestFunc: func(t testing.TB, app *pbTests.TestApp, e *core.ServeEvent) {
beszelTests.ClearCollection(t, app, "alerts")
beszelTests.CreateRecord(app, "alerts", map[string]any{
"name": "CPU",
"system": system1.Id,
"user": user1.Id,
"value": 80,
"min": 10,
})
},
AfterTestFunc: func(t testing.TB, app *pbTests.TestApp, res *http.Response) {
alerts, _ := app.CountRecords("alerts")
assert.Zero(t, alerts, "should have 0 alerts")
},
},
{
Name: "DELETE alert multiple systems",
Method: http.MethodDelete,
URL: "/api/beszel/user-alerts",
Headers: map[string]string{
"Authorization": user1Token,
},
ExpectedStatus: 200,
ExpectedContent: []string{"\"count\":2", "\"success\":true"},
TestAppFactory: testAppFactory,
Body: jsonReader(map[string]any{
"name": "Memory",
"systems": []string{system1.Id, system2.Id},
}),
BeforeTestFunc: func(t testing.TB, app *pbTests.TestApp, e *core.ServeEvent) {
beszelTests.ClearCollection(t, app, "alerts")
for _, systemId := range []string{system1.Id, system2.Id} {
_, err := beszelTests.CreateRecord(app, "alerts", map[string]any{
"name": "Memory",
"system": systemId,
"user": user1.Id,
"value": 90,
"min": 10,
})
assert.NoError(t, err, "should create alert")
}
alerts, _ := app.CountRecords("alerts")
assert.EqualValues(t, 2, alerts, "should have 2 alerts")
},
AfterTestFunc: func(t testing.TB, app *pbTests.TestApp, res *http.Response) {
alerts, _ := app.CountRecords("alerts")
assert.Zero(t, alerts, "should have 0 alerts")
},
},
{
Name: "User 2 should not be able to delete alert of user 1",
Method: http.MethodDelete,
URL: "/api/beszel/user-alerts",
Headers: map[string]string{
"Authorization": user2Token,
},
ExpectedStatus: 200,
ExpectedContent: []string{"\"count\":1", "\"success\":true"},
TestAppFactory: testAppFactory,
Body: jsonReader(map[string]any{
"name": "CPU",
"systems": []string{system2.Id},
}),
BeforeTestFunc: func(t testing.TB, app *pbTests.TestApp, e *core.ServeEvent) {
beszelTests.ClearCollection(t, app, "alerts")
for _, user := range []string{user1.Id, user2.Id} {
beszelTests.CreateRecord(app, "alerts", map[string]any{
"name": "CPU",
"system": system2.Id,
"user": user,
"value": 80,
"min": 10,
})
}
alerts, _ := app.CountRecords("alerts")
assert.EqualValues(t, 2, alerts, "should have 2 alerts")
user1AlertCount, _ := app.CountRecords("alerts", dbx.HashExp{"user": user1.Id})
assert.EqualValues(t, 1, user1AlertCount, "should have 1 alert")
user2AlertCount, _ := app.CountRecords("alerts", dbx.HashExp{"user": user2.Id})
assert.EqualValues(t, 1, user2AlertCount, "should have 1 alert")
},
AfterTestFunc: func(t testing.TB, app *pbTests.TestApp, res *http.Response) {
user1AlertCount, _ := app.CountRecords("alerts", dbx.HashExp{"user": user1.Id})
assert.EqualValues(t, 1, user1AlertCount, "should have 1 alert")
user2AlertCount, _ := app.CountRecords("alerts", dbx.HashExp{"user": user2.Id})
assert.Zero(t, user2AlertCount, "should have 0 alerts")
},
},
}
for _, scenario := range scenarios {
scenario.Test(t)
}
}
func getHubWithUser(t *testing.T) (*beszelTests.TestHub, *core.Record) {
hub, err := beszelTests.NewTestHub(t.TempDir())
assert.NoError(t, err)
hub.StartHub()
// Manually initialize the system manager to bind event hooks
err = hub.GetSystemManager().Initialize()
assert.NoError(t, err)
// Create a test user
user, err := beszelTests.CreateUser(hub, "test@example.com", "password")
assert.NoError(t, err)
// Create user settings for the test user (required for alert notifications)
userSettingsData := map[string]any{
"user": user.Id,
"settings": `{"emails":[test@example.com],"webhooks":[]}`,
}
_, err = beszelTests.CreateRecord(hub, "user_settings", userSettingsData)
assert.NoError(t, err)
return hub, user
}
func TestStatusAlerts(t *testing.T) {
synctest.Test(t, func(t *testing.T) {
hub, user := getHubWithUser(t)
defer hub.Cleanup()
systems, err := beszelTests.CreateSystems(hub, 4, user.Id, "paused")
assert.NoError(t, err)
var alerts []*core.Record
for i, system := range systems {
alert, err := beszelTests.CreateRecord(hub, "alerts", map[string]any{
"name": "Status",
"system": system.Id,
"user": user.Id,
"min": i + 1,
})
assert.NoError(t, err)
alerts = append(alerts, alert)
}
time.Sleep(10 * time.Millisecond)
for _, alert := range alerts {
assert.False(t, alert.GetBool("triggered"), "Alert should not be triggered immediately")
}
if hub.TestMailer.TotalSend() != 0 {
assert.Zero(t, hub.TestMailer.TotalSend(), "Expected 0 messages, got %d", hub.TestMailer.TotalSend())
}
for _, system := range systems {
assert.EqualValues(t, "paused", system.GetString("status"), "System should be paused")
}
for _, system := range systems {
system.Set("status", "up")
err = hub.SaveNoValidate(system)
assert.NoError(t, err)
}
time.Sleep(time.Second)
assert.EqualValues(t, 0, hub.GetPendingAlertsCount(), "should have 0 alerts in the pendingAlerts map")
for _, system := range systems {
system.Set("status", "down")
err = hub.SaveNoValidate(system)
assert.NoError(t, err)
}
// after 30 seconds, should have 4 alerts in the pendingAlerts map, no triggered alerts
time.Sleep(time.Second * 30)
assert.EqualValues(t, 4, hub.GetPendingAlertsCount(), "should have 4 alerts in the pendingAlerts map")
triggeredCount, err := hub.CountRecords("alerts", dbx.HashExp{"triggered": true})
assert.NoError(t, err)
assert.EqualValues(t, 0, triggeredCount, "should have 0 alert triggered")
assert.EqualValues(t, 0, hub.TestMailer.TotalSend(), "should have 0 messages sent")
// after 1:30 seconds, should have 1 triggered alert and 3 pending alerts
time.Sleep(time.Second * 60)
assert.EqualValues(t, 3, hub.GetPendingAlertsCount(), "should have 3 alerts in the pendingAlerts map")
triggeredCount, err = hub.CountRecords("alerts", dbx.HashExp{"triggered": true})
assert.NoError(t, err)
assert.EqualValues(t, 1, triggeredCount, "should have 1 alert triggered")
assert.EqualValues(t, 1, hub.TestMailer.TotalSend(), "should have 1 messages sent")
// after 2:30 seconds, should have 2 triggered alerts and 2 pending alerts
time.Sleep(time.Second * 60)
assert.EqualValues(t, 2, hub.GetPendingAlertsCount(), "should have 2 alerts in the pendingAlerts map")
triggeredCount, err = hub.CountRecords("alerts", dbx.HashExp{"triggered": true})
assert.NoError(t, err)
assert.EqualValues(t, 2, triggeredCount, "should have 2 alert triggered")
assert.EqualValues(t, 2, hub.TestMailer.TotalSend(), "should have 2 messages sent")
// now we will bring the remaning systems back up
for _, system := range systems {
system.Set("status", "up")
err = hub.SaveNoValidate(system)
assert.NoError(t, err)
}
time.Sleep(time.Second)
// should have 0 alerts in the pendingAlerts map and 0 alerts triggered
assert.EqualValues(t, 0, hub.GetPendingAlertsCount(), "should have 0 alerts in the pendingAlerts map")
triggeredCount, err = hub.CountRecords("alerts", dbx.HashExp{"triggered": true})
assert.NoError(t, err)
assert.Zero(t, triggeredCount, "should have 0 alert triggered")
// 4 messages sent, 2 down alerts and 2 up alerts for first 2 systems
assert.EqualValues(t, 4, hub.TestMailer.TotalSend(), "should have 4 messages sent")
})
}
func TestAlertsHistory(t *testing.T) {
synctest.Test(t, func(t *testing.T) {
hub, user := getHubWithUser(t)
defer hub.Cleanup()
// Create systems and alerts
systems, err := beszelTests.CreateSystems(hub, 1, user.Id, "up")
assert.NoError(t, err)
system := systems[0]
alert, err := beszelTests.CreateRecord(hub, "alerts", map[string]any{
"name": "Status",
"system": system.Id,
"user": user.Id,
"min": 1,
})
assert.NoError(t, err)
// Initially, no alert history records should exist
initialHistoryCount, err := hub.CountRecords("alerts_history", nil)
assert.NoError(t, err)
assert.Zero(t, initialHistoryCount, "Should have 0 alert history records initially")
// Set system to up initially
system.Set("status", "up")
err = hub.SaveNoValidate(system)
assert.NoError(t, err)
time.Sleep(10 * time.Millisecond)
// Set system to down to trigger alert
system.Set("status", "down")
err = hub.SaveNoValidate(system)
assert.NoError(t, err)
// Wait for alert to trigger (after the downtime delay)
// With 1 minute delay, we need to wait at least 1 minute + some buffer
time.Sleep(time.Second * 75)
// Check that alert is triggered
triggeredCount, err := hub.CountRecords("alerts", dbx.HashExp{"triggered": true, "id": alert.Id})
assert.NoError(t, err)
assert.EqualValues(t, 1, triggeredCount, "Alert should be triggered")
// Check that alert history record was created
historyCount, err := hub.CountRecords("alerts_history", dbx.HashExp{"alert_id": alert.Id})
assert.NoError(t, err)
assert.EqualValues(t, 1, historyCount, "Should have 1 alert history record for triggered alert")
// Get the alert history record and verify it's not resolved immediately
historyRecord, err := hub.FindFirstRecordByFilter("alerts_history", "alert_id={:alert_id}", dbx.Params{"alert_id": alert.Id})
assert.NoError(t, err)
assert.NotNil(t, historyRecord, "Alert history record should exist")
assert.Equal(t, alert.Id, historyRecord.GetString("alert_id"), "Alert history should reference correct alert")
assert.Equal(t, system.Id, historyRecord.GetString("system"), "Alert history should reference correct system")
assert.Equal(t, "Status", historyRecord.GetString("name"), "Alert history should have correct name")
// The alert history might be resolved immediately in some cases, so let's check the alert's triggered status
alertRecord, err := hub.FindFirstRecordByFilter("alerts", "id={:id}", dbx.Params{"id": alert.Id})
assert.NoError(t, err)
assert.True(t, alertRecord.GetBool("triggered"), "Alert should still be triggered when checking history")
// Now resolve the alert by setting system back to up
system.Set("status", "up")
err = hub.SaveNoValidate(system)
assert.NoError(t, err)
time.Sleep(200 * time.Millisecond)
// Check that alert is no longer triggered
triggeredCount, err = hub.CountRecords("alerts", dbx.HashExp{"triggered": true, "id": alert.Id})
assert.NoError(t, err)
assert.Zero(t, triggeredCount, "Alert should not be triggered after system is back up")
// Check that alert history record is now resolved
historyRecord, err = hub.FindFirstRecordByFilter("alerts_history", "alert_id={:alert_id}", dbx.Params{"alert_id": alert.Id})
assert.NoError(t, err)
assert.NotNil(t, historyRecord, "Alert history record should still exist")
assert.NotNil(t, historyRecord.Get("resolved"), "Alert history should be resolved")
// Test deleting a triggered alert resolves its history
// Create another system and alert
systems2, err := beszelTests.CreateSystems(hub, 1, user.Id, "up")
assert.NoError(t, err)
system2 := systems2[0]
system2.Set("name", "test-system-2") // Rename for clarity
err = hub.SaveNoValidate(system2)
assert.NoError(t, err)
alert2, err := beszelTests.CreateRecord(hub, "alerts", map[string]any{
"name": "Status",
"system": system2.Id,
"user": user.Id,
"min": 1,
})
assert.NoError(t, err)
// Set system2 to down to trigger alert
system2.Set("status", "down")
err = hub.SaveNoValidate(system2)
assert.NoError(t, err)
// Wait for alert to trigger
time.Sleep(time.Second * 75)
// Verify alert is triggered and history record exists
triggeredCount, err = hub.CountRecords("alerts", dbx.HashExp{"triggered": true, "id": alert2.Id})
assert.NoError(t, err)
assert.EqualValues(t, 1, triggeredCount, "Second alert should be triggered")
historyCount, err = hub.CountRecords("alerts_history", dbx.HashExp{"alert_id": alert2.Id})
assert.NoError(t, err)
assert.EqualValues(t, 1, historyCount, "Should have 1 alert history record for second alert")
// Delete the triggered alert
err = hub.Delete(alert2)
assert.NoError(t, err)
// Check that alert history record is resolved after deletion
historyRecord2, err := hub.FindFirstRecordByFilter("alerts_history", "alert_id={:alert_id}", dbx.Params{"alert_id": alert2.Id})
assert.NoError(t, err)
assert.NotNil(t, historyRecord2, "Alert history record should still exist after alert deletion")
assert.NotNil(t, historyRecord2.Get("resolved"), "Alert history should be resolved after alert deletion")
// Verify total history count is correct (2 records total)
totalHistoryCount, err := hub.CountRecords("alerts_history", nil)
assert.NoError(t, err)
assert.EqualValues(t, 2, totalHistoryCount, "Should have 2 total alert history records")
})
}

View File

@@ -0,0 +1,55 @@
package alerts
import (
"sync"
"time"
"github.com/pocketbase/pocketbase/core"
)
func (am *AlertManager) GetAlertManager() *AlertManager {
return am
}
func (am *AlertManager) GetPendingAlerts() *sync.Map {
return &am.pendingAlerts
}
func (am *AlertManager) GetPendingAlertsCount() int {
count := 0
am.pendingAlerts.Range(func(key, value any) bool {
count++
return true
})
return count
}
// ProcessPendingAlerts manually processes all expired alerts (for testing)
func (am *AlertManager) ProcessPendingAlerts() ([]*core.Record, error) {
now := time.Now()
var lastErr error
var processedAlerts []*core.Record
am.pendingAlerts.Range(func(key, value any) bool {
info := value.(*alertInfo)
if now.After(info.expireTime) {
// Downtime delay has passed, process alert
if err := am.sendStatusAlert("down", info.systemName, info.alertRecord); err != nil {
lastErr = err
}
processedAlerts = append(processedAlerts, info.alertRecord)
am.pendingAlerts.Delete(key)
}
return true
})
return processedAlerts, lastErr
}
// ForceExpirePendingAlerts sets all pending alerts to expire immediately (for testing)
func (am *AlertManager) ForceExpirePendingAlerts() {
now := time.Now()
am.pendingAlerts.Range(func(key, value any) bool {
info := value.(*alertInfo)
info.expireTime = now.Add(-time.Second) // Set to 1 second ago
return true
})
}