refactor Cluster gRPC service, add common type converters from/to netip

internal/machine/api/pb/common.go

@@ -0,0 +1,49 @@
+package pb
+
+import (
+	"bytes"
+	"fmt"
+	"net/netip"
+)
+
+func NewIP(addr netip.Addr) *IP {
+	// MarshalBinary always returns a nil error.
+	ip, _ := addr.MarshalBinary()
+	return &IP{Ip: ip}
+}
+
+func (ip *IP) ToAddr() (netip.Addr, error) {
+	var addr netip.Addr
+	if err := addr.UnmarshalBinary(ip.Ip); err != nil {
+		return netip.Addr{}, fmt.Errorf("unmarshal IP: %w", err)
+	}
+	return addr, nil
+}
+
+func (ip *IP) Equal(other *IP) bool {
+	return bytes.Equal(ip.Ip, other.Ip)
+}
+
+func NewIPPort(ap netip.AddrPort) *IPPort {
+	return &IPPort{Ip: NewIP(ap.Addr()), Port: uint32(ap.Port())}
+}
+
+func (ipp *IPPort) ToAddrPort() (netip.AddrPort, error) {
+	addr, err := ipp.Ip.ToAddr()
+	if err != nil {
+		return netip.AddrPort{}, err
+	}
+	return netip.AddrPortFrom(addr, uint16(ipp.Port)), nil
+}
+
+func NewIPPrefix(p netip.Prefix) *IPPrefix {
+	return &IPPrefix{Ip: NewIP(p.Addr()), Bits: uint32(p.Bits())}
+}
+
+func (p *IPPrefix) ToPrefix() (netip.Prefix, error) {
+	addr, err := p.Ip.ToAddr()
+	if err != nil {
+		return netip.Prefix{}, err
+	}
+	return netip.PrefixFrom(addr, int(p.Bits)), nil
+}