package mail import ( "github.com/pkg/errors" "gitlab.com/wpetit/goweb/service" ) const ServiceName service.Name = "mail" // From retrieves the mail service in the given container func From(container *service.Container) (*Mailer, error) { service, err := container.Service(ServiceName) if err != nil { return nil, errors.Wrapf(err, "error while retrieving '%s' service", ServiceName) } srv, ok := service.(*Mailer) if !ok { return nil, errors.Errorf("retrieved service is not a valid '%s' service", ServiceName) } return srv, nil } // Must retrieves the mail service in the given container or panic otherwise func Must(container *service.Container) *Mailer { srv, err := From(container) if err != nil { panic(err) } return srv }