// Close closes each of the underlying writers.
func (mmw MultiMessageWriter) Close() error {
errs := errset.ErrSet{}
for _, w := range mmw.Writers {
if err := w.Close(); err != nil {
errs = append(errs, err)
}
}
return errs.ReturnValue()
}
// WriteMessage writes the message `m` to each of the fanout MessageWriters. If
// any of the writers fail, the others are still tried. Returns a non-nil error
// if any of the writers fail.
func (mmw MultiMessageWriter) WriteMessage(m Message) error {
errCh := make(chan error, len(mmw.Writers))
for _, w := range mmw.Writers {
go func(w MessageWriter) {
errCh <- w.WriteMessage(m)
}(w)
}
errs := errset.ErrSet{}
for _ = range mmw.Writers {
err := <-errCh
if err != nil {
errs = append(errs, err)
}
}
return errs.ReturnValue()
}