fix: alert pre-save validation (#1690)

* add interface of validation rule
---------
Co-authored-by: NshardingHe <wangzihe@flashcat.cloud>
Co-authored-by: NYening Qin <710leo@gmail.com>

center/router/router.go

@@ -275,7 +275,7 @@ func (rt *Router) Config(r *gin.Engine) {
 		pages.PUT("/busi-group/:id/alert-rules/fields", rt.auth(), rt.user(), rt.perm("/alert-rules/put"), rt.bgrw(), rt.alertRulePutFields)
 		pages.PUT("/busi-group/:id/alert-rule/:arid", rt.auth(), rt.user(), rt.perm("/alert-rules/put"), rt.alertRulePutByFE)
 		pages.GET("/alert-rule/:arid", rt.auth(), rt.user(), rt.perm("/alert-rules"), rt.alertRuleGet)
-		pages.PUT("/busi-group/:id/alert-rule/:arid/validate", rt.auth(), rt.user(), rt.perm("/alert-rules/put"), rt.alertRuleValidation)
+		pages.PUT("/busi-group/alert-rule/validate", rt.auth(), rt.user(), rt.perm("/alert-rules/put"), rt.alertRuleValidation)
 
 		pages.GET("/busi-group/:id/recording-rules", rt.auth(), rt.user(), rt.perm("/recording-rules"), rt.recordingRuleGets)
 		pages.POST("/busi-group/:id/recording-rules", rt.auth(), rt.user(), rt.perm("/recording-rules/add"), rt.bgrw(), rt.recordingRuleAddByFE)

center/router/router_alert_rule.go

@@ -278,17 +278,6 @@ func (rt *Router) alertRuleValidation(c *gin.Context) {
 	var f models.AlertRule //new
 	ginx.BindJSON(c, &f)
 
-	arid := ginx.UrlParamInt64(c, "arid")
-	ar, err := models.AlertRuleGetById(rt.Ctx, arid)
-	ginx.Dangerous(err)
-
-	if ar == nil {
-		ginx.NewRender(c, http.StatusNotFound).Message("No such AlertRule")
-		return
-	}
-
-	rt.bgrwCheck(c, ar.GroupId)
-
 	if len(f.NotifyChannelsJSON) > 0 && len(f.NotifyGroupsJSON) > 0 { //Validation NotifyChannels
 		ngids := make([]int64, 0, len(f.NotifyChannelsJSON))
 		for i := range f.NotifyGroupsJSON {