func NewQueue(dst beam.Sender, size int) *Queue {
r, w := beam.Pipe()
q := &Queue{
PipeSender: w,
dst: dst,
ch: make(chan *beam.Message, size),
}
go func() {
defer close(q.ch)
for {
msg, err := r.Receive(beam.Ret)
if err != nil {
r.Close()
return
}
q.ch <- msg
}
}()
go func() {
for msg := range q.ch {
_, err := dst.Send(msg)
if err != nil {
r.Close()
return
}
}
}()
return q
}
// Function for forwarding a messgae including some minor error formatting
func forward(out beam.Sender, msg *beam.Message) (err error) {
if _, err := out.Send(msg); err != nil {
return fmt.Errorf("[debug] Failed to forward msg. Reason: %v\n", err)
}
return
}