Remove datapoint from trigger

datapoint.go

@@ -27,6 +27,7 @@ type Datapoint struct {
 	LastValue          time.Time `db:"last_value"`
 	DatapointValueJSON []byte    `db:"datapoint_value_json"`
 	LastDatapointValue DatapointValue
+	Found              bool
 }
 
 type DatapointValue struct {
@@ -177,6 +178,7 @@ func DatapointsRetrieve() (dps []Datapoint, err error) { // {{{
 		dp.Name = res.Name
 		dp.Datatype = res.Datatype
 		dp.LastValue = res.LastValue
+		dp.Found = true
 
 		if res.VID.Valid {
 			dpv.ID = int(res.VID.Int64)
@@ -196,16 +198,25 @@ func DatapointRetrieve(id int, name string) (dp Datapoint, err error) { // {{{
 	var query string
 	var param any
 	if id > 0 {
-		query = `SELECT * FROM datapoint WHERE id = $1`
+		query = `SELECT *, true AS found FROM datapoint WHERE id = $1`
 		param = id
 		dp.ID = id
 	} else {
-		query = `SELECT * FROM datapoint WHERE name = $1`
+		query = `SELECT *, true AS found FROM datapoint WHERE name = $1`
 		param = name
 	}
 
 	row := service.Db.Conn.QueryRowx(query, param)
 	err = row.StructScan(&dp)
+
+	if err == sql.ErrNoRows {
+		dp = Datapoint{
+			Name: name,
+		}
+		err = nil
+		return
+	}
+
 	if err != nil {
 		err = we.Wrap(err).WithData(name)
 		return