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package gocql
import "net"
// AddressTranslator provides a way to translate node addresses (and ports) that are
// discovered or received as a node event. This can be useful in an ec2 environment,
// for instance, to translate public IPs to private IPs.
type AddressTranslator interface {
// Translate will translate the provided address and/or port to another
// address and/or port. If no translation is possible, Translate will return the
// address and port provided to it.
Translate(addr net.IP, port int) (net.IP, int)
}
type AddressTranslatorFunc func(addr net.IP, port int) (net.IP, int)
func (fn AddressTranslatorFunc) Translate(addr net.IP, port int) (net.IP, int) {
return fn(addr, port)
}
// IdentityTranslator will do nothing but return what it was provided. It is essentially a no-op.
func IdentityTranslator() AddressTranslator {
return AddressTranslatorFunc(func(addr net.IP, port int) (net.IP, int) {
return addr, port
})
}
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