zones: introduce RingInfo and Machine.Rings

RingInfo includes Wireguard ring related details

Signed-off-by: Alejandro Mery <amery@jpi.io>

pkg/wireguard/keys.go

@@ -0,0 +1,30 @@
+package wireguard
+
+import (
+	"encoding/base64"
+)
+
+// BinaryKey is a binary blob
+type BinaryKey []byte
+
+func (k BinaryKey) String() string {
+	return base64.StdEncoding.EncodeToString(k)
+}
+
+// IsZero tells if the key hasn't been set
+func (k BinaryKey) IsZero() bool {
+	return len(k) == 0
+}
+
+// BinaryKeyFromBase64 decodes a base64-based string into
+// a [BinaryKey]
+func BinaryKeyFromBase64(data string) (BinaryKey, error) {
+	b, err := base64.StdEncoding.DecodeString(data)
+	return BinaryKey(b), err
+}
+
+// KeyPair holds a Key pair
+type KeyPair struct {
+	PrivateKey BinaryKey
+	PublicKey  BinaryKey
+}

pkg/zones/machine.go

@@ -16,9 +16,10 @@ type Machine struct {
 
 	zone *Zone
 	id   int
-	Name string
+	Name string `toml:"name"`
 
-	PublicAddresses []netip.Addr
+	PublicAddresses []netip.Addr `toml:"public,omitempty"`
+	RingAddresses   []*RingInfo  `toml:"rings,omitempty"`
 }
 
 func (m *Machine) String() string {

pkg/zones/rings.go

@@ -1,6 +1,10 @@
 package zones
 
-import "net/netip"
+import (
+	"net/netip"
+
+	"git.jpi.io/amery/jpictl/pkg/wireguard"
+)
 
 const (
 	// MaxZoneID indicates the highest ID allowed for a Zone
@@ -11,6 +15,15 @@ const (
 	RingsCount = 2
 )
 
+// RingInfo contains represents the Wireguard endpoint details
+// for a Machine on a particular ring
+type RingInfo struct {
+	Ring    int                `toml:"ring"`
+	Enabled bool               `toml:"enabled,omitempty"`
+	Keys    *wireguard.KeyPair `toml:"keys,omitempty"`
+	Address netip.Addr         `toml:"address,omitempty"`
+}
+
 // RingAddressEncoder provides encoder/decoder access for a particular
 // Wireguard ring
 type RingAddressEncoder struct {