package engine import ( "time" "github.com/target/goalert/validation/validate" "github.com/google/uuid" ) type callback struct { ID string AlertID int ServiceID string ContactMethodID uuid.UUID CreatedAt time.Time } func (c callback) Normalize() (*callback, error) { if c.ID == "" { c.ID = uuid.New().String() } err := validate.Many( validate.UUID("ID", c.ID), ) if err != nil { return nil, err } return &c, nil }