func (s *client) send(ch *amqp.Channel, group uint64, o *Options, payload []byte) ([]byte, error) {
id, err := s.flake.Next()
if err != nil {
return nil, err
}
groupString := fmt.Sprintf("%d", group)
envelope := amqp.Publishing{
MessageId: fmt.Sprintf("%d", id),
CorrelationId: groupString,
Body: payload,
DeliveryMode: amqp.Transient,
Headers: amqp.Table{timestampHeader: time.Now().UnixNano()},
}
if o.Persistent {
envelope.DeliveryMode = amqp.Persistent
}
mandatory := false
immediate := false
if err := ch.Publish(o.Exchange, o.Key, mandatory, immediate, envelope); err != nil {
return nil, fmt.Errorf("Could not publish to exchange %s: %s", o.Exchange, err)
}
h := murmur3.New32()
h.Write(payload)
sum := h.Sum(nil)
size := float32(len(payload)) / 1024
if len(o.Verbose) > 0 {
log.Infof("[%d] sending %.2f kB (%x) to %s", id, size, sum, o.Key)
} else {
log.Infof("[%d] sending %.2f kB (%x)", id, size, sum)
}
return sum, nil
}
