feat: 触发报警后的通知支持仅发送一次

cmd/dashboard/controller/member_api.go

@@ -600,6 +600,7 @@ type alertRuleForm struct {
 	Name            string
 	RulesRaw        string
 	NotificationTag string
+	TriggerMode     int
 	Enable          string
 }
 
@@ -642,6 +643,7 @@ func (ma *memberAPI) addOrEditAlertRule(c *gin.Context) {
 		r.RulesRaw = arf.RulesRaw
 		r.NotificationTag = arf.NotificationTag
 		enable := arf.Enable == "on"
+		r.TriggerMode = arf.TriggerMode
 		r.Enable = &enable
 		r.ID = arf.ID
 		//保证NotificationTag不为空

model/alertrule.go

@@ -7,6 +7,11 @@ import (
 	"gorm.io/gorm"
 )
 
+const (
+	ModeAlwaysTrigger  = 0
+	ModeOnetimeTrigger = 1
+)
+
 type CycleTransferStats struct {
 	Name       string
 	From       time.Time
@@ -23,6 +28,7 @@ type AlertRule struct {
 	Name            string
 	RulesRaw        string
 	Enable          *bool
+	TriggerMode     int    `gorm:"default:0"` // 触发模式: 0-始终触发(默认) 1-单次触发
 	NotificationTag string // 该报警规则所在的通知组
 	Rules           []Rule `gorm:"-" json:"-"`
 }

service/singleton/alertsentinel.go

@@ -153,13 +153,19 @@ func checkStatus() {
 			// 保存当前服务器状态信息
 			curServer := model.Server{}
 			copier.Copy(&curServer, server)
+
+			// 本次未通过检查
 			if !passed {
-				alertsPrevState[alert.ID][server.ID] = _RuleCheckFail
-				message := fmt.Sprintf("[%s] %s(%s) %s", Localizer.MustLocalize(&i18n.LocalizeConfig{
-					MessageID: "Incident",
-				}), server.Name, IPDesensitize(server.Host.IP), alert.Name)
-				go SendNotification(alert.NotificationTag, message, true, &curServer)
+				// 始终触发模式或上次检查不为失败时触发报警（跳过单次触发+上次失败的情况）
+				if alert.TriggerMode == model.ModeAlwaysTrigger || alertsPrevState[alert.ID][server.ID] != _RuleCheckFail {
+					alertsPrevState[alert.ID][server.ID] = _RuleCheckFail
+					message := fmt.Sprintf("[%s] %s(%s) %s", Localizer.MustLocalize(&i18n.LocalizeConfig{
+						MessageID: "Incident",
+					}), server.Name, IPDesensitize(server.Host.IP), alert.Name)
+					go SendNotification(alert.NotificationTag, message, true, &curServer)
+				}
 			} else {
+				// 本次通过检查但上一次的状态为失败，则发送恢复通知
 				if alertsPrevState[alert.ID][server.ID] == _RuleCheckFail {
 					message := fmt.Sprintf("[%s] %s(%s) %s", Localizer.MustLocalize(&i18n.LocalizeConfig{
 						MessageID: "Resolved",