chore: move legacy unused WG tunnel and client connector to experiment/wg

pkg/client/connector/wireguard.go

@@ -1,93 +0,0 @@
-package connector
-
-import (
-	"context"
-	"fmt"
-	"net"
-	"net/netip"
-	"strconv"
-
-	"github.com/psviderski/uncloud/internal/cli/config"
-	"github.com/psviderski/uncloud/internal/grpcversion"
-	"github.com/psviderski/uncloud/internal/machine/constants"
-	"github.com/psviderski/uncloud/internal/machine/network"
-	"github.com/psviderski/uncloud/internal/machine/network/tunnel"
-	"github.com/psviderski/uncloud/pkg/client"
-	"golang.org/x/net/proxy"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/credentials/insecure"
-)
-
-// WireGuardConnector establishes a connection to the cluster API through a WireGuard tunnel
-// to one of the cluster machines.
-type WireGuardConnector struct {
-	user     *client.User
-	machines []config.MachineConnection
-	tun      *tunnel.Tunnel
-}
-
-func NewWireGuardConnector(user *client.User, machines []config.MachineConnection) *WireGuardConnector {
-	return &WireGuardConnector{
-		user:     user,
-		machines: machines,
-	}
-}
-
-// TODO: handle context cancelation.
-func (c *WireGuardConnector) Connect(ctx context.Context) (*grpc.ClientConn, error) {
-	if len(c.machines) == 0 {
-		return nil, fmt.Errorf("no machines to connect to")
-	}
-	// TODO: iterate over machines and try to connect to each one until successful.
-	//  For now, try to connect to only the first machine.
-	machine := c.machines[0]
-	endpointIPs, err := net.LookupIP(machine.Host)
-	if err != nil {
-		return nil, fmt.Errorf("resolve IP for %q: %w", machine.Host, err)
-	}
-	endpointAddr, err := netip.ParseAddr(endpointIPs[0].String())
-	if err != nil {
-		return nil, fmt.Errorf("parse IP address %q: %w", endpointIPs[0].String(), err)
-	}
-	endpoint := netip.AddrPortFrom(endpointAddr, tunnel.DefaultEndpointPort)
-	machineManagementIP := network.ManagementIP(machine.PublicKey)
-	machineAPIAddr := net.JoinHostPort(machineManagementIP.String(), strconv.Itoa(constants.MachineAPIPort))
-
-	tunCfg := &tunnel.Config{
-		LocalAddress:    c.user.ManagementIP(),
-		LocalPrivateKey: c.user.PrivateKey(),
-		RemotePublicKey: machine.PublicKey,
-		RemoteNetwork:   netip.PrefixFrom(machineManagementIP, 128),
-		Endpoint:        endpoint,
-	}
-	if c.tun, err = tunnel.Connect(tunCfg); err != nil {
-		return nil, fmt.Errorf("establish WireGuard tunnel to %q: %w", endpoint, err)
-	}
-
-	conn, err := grpc.NewClient(
-		machineAPIAddr,
-		grpc.WithTransportCredentials(insecure.NewCredentials()),
-		grpc.WithDefaultServiceConfig(defaultServiceConfig),
-		grpc.WithContextDialer(func(ctx context.Context, addr string) (net.Conn, error) {
-			return c.tun.DialContext(ctx, "tcp", addr)
-		}),
-		grpc.WithUnaryInterceptor(grpcversion.ClientUnaryInterceptor),
-		grpc.WithStreamInterceptor(grpcversion.ClientStreamInterceptor),
-	)
-	if err != nil {
-		return nil, fmt.Errorf("connect to machine API through WireGuard tunnel: %w", err)
-	}
-	return conn, nil
-}
-
-func (c *WireGuardConnector) Dialer() (proxy.ContextDialer, error) {
-	return nil, fmt.Errorf("proxy connections not implemented for WireGuard connector")
-}
-
-func (c *WireGuardConnector) Close() error {
-	if c.tun != nil {
-		c.tun.Close()
-		c.tun = nil
-	}
-	return nil
-}