// resolvePort attempts to turn a IntOrString port reference into a concrete port number.
// If portReference has an int value, it is treated as a literal, and simply returns that value.
// If portReference is a string, an attempt is first made to parse it as an integer. If that fails,
// an attempt is made to find a port with the same name in the container spec.
// If a port with the same name is found, it's ContainerPort value is returned. If no matching
// port is found, an error is returned.
func resolvePort(portReference intstr.IntOrString, container *api.Container) (int, error) {
if portReference.Type == intstr.Int {
return portReference.IntValue(), nil
}
portName := portReference.StrVal
port, err := strconv.Atoi(portName)
if err == nil {
return port, nil
}
for _, portSpec := range container.Ports {
if portSpec.Name == portName {
return int(portSpec.ContainerPort), nil
}
}
return -1, fmt.Errorf("couldn't find port: %v in %v", portReference, container)
}
func extractPort(param intstr.IntOrString, container api.Container) (int, error) {
port := -1
var err error
switch param.Type {
case intstr.Int:
port = param.IntValue()
case intstr.String:
if port, err = findPortByName(container, param.StrVal); err != nil {
// Last ditch effort - maybe it was an int stored as string?
if port, err = strconv.Atoi(param.StrVal); err != nil {
return port, err
}
}
default:
return port, fmt.Errorf("IntOrString had no kind: %+v", param)
}
if port > 0 && port < 65536 {
return port, nil
}
return port, fmt.Errorf("invalid port number: %v", port)
}