func (l *Listener) send(serviceName string) error {
service, err := l.backend.GetServiceDetails(serviceName)
if err != nil {
return err
}
update := model.ServiceUpdate{
ServiceKey: model.MakeServiceKey("tcp", net.ParseIP(service.Address), service.Port),
ServiceInfo: &model.ServiceInfo{Protocol: service.Protocol},
}
l.backend.ForeachInstance(serviceName, func(name string, instance data.Instance) {
update.ServiceInfo.Instances = append(update.ServiceInfo.Instances, model.MakeInstance(net.ParseIP(instance.Address), instance.Port))
})
log.Printf("Sending update for %s: %+v\n", update.ServiceKey.String(), update.ServiceInfo)
l.updates <- update
return nil
}
func (srv *Server) doRequest(conn *net.UnixConn) error {
var buf bytes.Buffer
_, err := io.Copy(&buf, conn)
if err != nil {
return err
}
// XXX support service deletion commands
parts := strings.Split(strings.TrimSpace(buf.String()), " ")
if len(parts) <= 0 {
return fmt.Errorf("service specification should begin with port:ip-address")
}
addr, err := net.ResolveTCPAddr("tcp", parts[0])
if err != nil {
return err
}
var insts []model.Instance
for _, inst := range parts[2:] {
addr, err := net.ResolveTCPAddr("tcp", inst)
if err != nil {
return err
}
insts = append(insts, model.MakeInstance(addr.IP, addr.Port))
}
var update model.ServiceUpdate
update.ServiceKey = model.MakeServiceKey("tcp", addr.IP, addr.Port)
update.ServiceInfo = &model.ServiceInfo{
Protocol: parts[1],
Instances: insts,
}
select {
case srv.updates <- update:
case <-srv.closed:
}
return nil
}