zones: fix New() to handle relative paths on hackpadfs

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

pkg/zones/env.go

@@ -10,21 +10,18 @@ import (
 // WriteEnv generates environment variables for shell scripts
 func (m *Zones) WriteEnv(w io.Writer) error {
 	var buf bytes.Buffer
-	var err error
 
 	m.writeEnvVarFn(&buf, genEnvZones, "ZONES")
 	m.ForEachZone(func(z *Zone) bool {
-		err = m.writeEnvZone(&buf, z)
-		return err != nil
+		m.writeEnvZone(&buf, z)
+		return false
 	})
 
-	if err == nil {
-		_, err = buf.WriteTo(w)
-	}
+	_, err := buf.WriteTo(w)
 	return err
 }
 
-func (m *Zones) writeEnvZone(w io.Writer, z *Zone) error {
+func (m *Zones) writeEnvZone(w io.Writer, z *Zone) {
 	zoneID := z.ID
 
 	// ZONE{zoneID}
@@ -38,11 +35,8 @@ func (m *Zones) writeEnvZone(w io.Writer, z *Zone) error {
 	m.writeEnvVar(w, fmt.Sprintf("%v", gatewayID), "ZONE%v_%s", zoneID, "GW")
 
 	// ZONE{zoneID}_IP
-	if ip, ok := RingZeroAddress(zoneID, gatewayID); ok {
-		m.writeEnvVar(w, ip.String(), "ZONE%v_%s", zoneID, "IP")
-	}
-
-	return nil
+	ip, _ := RingZeroAddress(zoneID, gatewayID)
+	m.writeEnvVar(w, ip.String(), "ZONE%v_%s", zoneID, "IP")
 }
 
 func (m *Zones) writeEnvVarFn(w io.Writer, fn func(*Zones) string, name string, args ...any) {
@@ -85,9 +79,13 @@ func genEnvZoneNodes(z *Zone) string {
 }
 
 func getRingZeroGatewayID(z *Zone) int {
-	var gatewayID int
+	var firstNodeID, gatewayID int
 
 	z.ForEachMachine(func(p *Machine) bool {
+		if firstNodeID == 0 {
+			firstNodeID = p.ID
+		}
+
 		if p.IsGateway() {
 			gatewayID = p.ID
 		}
@@ -95,5 +93,10 @@ func getRingZeroGatewayID(z *Zone) int {
 		return gatewayID != 0
 	})
 
-	return gatewayID
+	switch {
+	case gatewayID == 0:
+		return firstNodeID
+	default:
+		return gatewayID
+	}
 }

pkg/zones/machine.go

@@ -3,12 +3,10 @@ package zones
 import (
 	"net/netip"
 	"strings"
-	"sync"
 )
 
 // A Machine is a machine on a Zone
 type Machine struct {
-	mu   sync.Mutex
 	zone *Zone
 	ID   int
 	Name string `toml:"name"`
@@ -41,27 +39,6 @@ func (m *Machine) IsGateway() bool {
 	return ok
 }
 
-// SetGateway enables/disables a Machine ring0 integration
-func (m *Machine) SetGateway(enabled bool) error {
-	m.mu.Lock()
-	defer m.mu.Unlock()
-
-	ri, found := m.getRingInfo(0)
-	switch {
-	case !found && !enabled:
-		return nil
-	case !found:
-		var err error
-
-		if ri, err = m.createRingInfo(0, false); err != nil {
-			return err
-		}
-	}
-
-	ri.Enabled = enabled
-	return m.syncRingConfig(0)
-}
-
 func (m *Machine) getPeerByName(name string) (*Machine, bool) {
 	return m.zone.zones.GetMachineByName(name)
 }

pkg/zones/machine_rings.go

@@ -261,57 +261,3 @@ func (m *Machine) RemoveWireguardConfig(ring int) error {
 
 	return err
 }
-
-func (*Machine) syncRingConfig(_ int) error {
-	// _, err := m.getRingNodes(ring)
-	return nil
-}
-
-func (m *Machine) createRingInfo(ring int, enabled bool) (*RingInfo, error) {
-	keys, err := wireguard.NewKeyPair()
-	if err != nil {
-		return nil, err
-	}
-
-	ri := &RingInfo{
-		Ring:    ring,
-		Enabled: enabled,
-		Keys:    keys,
-	}
-
-	err = m.applyRingInfo(ring, ri)
-	if err != nil {
-		return nil, err
-	}
-
-	return ri, nil
-}
-
-func (m *Machine) writeRingInfo(ri *RingInfo) error {
-	var err error
-
-	if m == nil || ri == nil {
-		return fs.ErrInvalid
-	}
-
-	err = m.WriteWireguardKeys(ri.Ring)
-	if err != nil {
-		return err
-	}
-
-	if !ri.Enabled {
-		return m.RemoveWireguardConfig(ri.Ring)
-	}
-
-	return m.writeRingInfoConf(ri.Ring, ri.Keys.PrivateKey)
-}
-
-func (m *Machine) writeRingInfoConf(ring int, _ wireguard.PrivateKey) error {
-	f, err := m.CreateTruncFile("wg%v.conf", ring)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	return nil
-}

pkg/zones/zones.go

@@ -3,6 +3,7 @@ package zones
 
 import (
 	"io/fs"
+	"path/filepath"
 
 	"github.com/hack-pad/hackpadfs/os"
 
@@ -33,31 +34,6 @@ func (z *Zone) ForEachMachine(fn func(*Machine) bool) {
 	}
 }
 
-// SetGateway configures a machine to be the zone's ring0 gateway
-func (z *Zone) SetGateway(gatewayID int, enabled bool) error {
-	var err error
-	var found bool
-
-	z.ForEachMachine(func(p *Machine) bool {
-		if p.ID == gatewayID {
-			found = true
-			err = p.SetGateway(enabled)
-
-			return true
-		}
-		return false
-	})
-
-	switch {
-	case err != nil:
-		return err
-	case !found:
-		return fs.ErrNotExist
-	default:
-		return nil
-	}
-}
-
 // Zones represents all zones in a cluster
 type Zones struct {
 	dir      fs.FS
@@ -130,7 +106,12 @@ func NewFS(dir fs.FS, domain string) (*Zones, error) {
 
 // New builds a [Zones] tree using the given directory
 func New(dir, domain string) (*Zones, error) {
-	base, err := os.NewFS().Sub(dir)
+	dir, err := filepath.Abs(dir)
+	if err != nil {
+		return nil, err
+	}
+
+	base, err := os.NewFS().Sub(dir[1:])
 	if err != nil {
 		return nil, err
 	}