zones: add structured logs to zone scanning

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

pkg/zones/machine_rings.go

@@ -122,17 +122,15 @@ func (m *Machine) applyWireguardConfig(ring int, wg *wireguard.Config) error {
 	addr := wg.GetAddress()
 	zoneID, nodeID, ok := Rings[ring].Decode(addr)
 	if !ok {
-		return fmt.Errorf("%s: invalid wg%v address: %s", m.Name, ring, addr)
+		return fmt.Errorf("%s: invalid address", addr)
 	}
 
 	if err := m.applyZoneNodeID(zoneID, nodeID); err != nil {
-		err = core.Wrapf(err, "%s: wg%v:%s", m.Name, ring, addr)
-		return err
+		return core.Wrapf(err, "%s: invalid address", addr)
 	}
 
 	if err := m.applyWireguardInterfaceConfig(ring, wg.Interface); err != nil {
-		err = core.Wrapf(err, "%s: wg%v:%s", m.Name, ring, addr)
-		return err
+		return core.Wrap(err, "interface")
 	}
 
 	for _, peer := range wg.Peer {
@@ -140,9 +138,14 @@ func (m *Machine) applyWireguardConfig(ring int, wg *wireguard.Config) error {
 		switch {
 		case errors.Is(err, ErrUnknownNode):
 			// ignore unknown peers
+			m.warn(nil).
+				WithField("subsystem", "wireguard").
+				WithField("node", m.Name).
+				WithField("peer", peer.Endpoint.Host).
+				WithField("ring", ring).
+				Print("ignoring unknown endpoint")
 		case err != nil:
-			err = core.Wrapf(err, "%s: wg%v:%s", m.Name, ring, addr)
-			return err
+			return core.Wrap(err, "peer")
 		}
 	}
 
@@ -163,6 +166,10 @@ func (m *Machine) applyRingInfo(ring int, new *RingInfo) error {
 	cur, _ := m.getRingInfo(ring)
 	if cur == nil {
 		// first, append
+		m.debug().
+			WithField("node", m.Name).
+			WithField("ring", ring).
+			Print("found")
 		m.Rings = append(m.Rings, new)
 		return nil
 	}

pkg/zones/machine_scan.go

@@ -71,6 +71,11 @@ func (m *Machine) setID() error {
 func (m *Machine) scan(opts *ScanOptions) error {
 	for i := 0; i < RingsCount; i++ {
 		if err := m.tryApplyWireguardConfig(i); err != nil {
+			m.error(err).
+				WithField("subsystem", "wireguard").
+				WithField("node", m.Name).
+				WithField("ring", i).
+				Print()
 			return err
 		}
 	}

pkg/zones/scan.go

@@ -37,7 +37,11 @@ func (m *Zones) scanDirectory(_ *ScanOptions) error {
 			switch {
 			case err != nil:
 				return core.Wrap(err, e.Name())
-			case z.Machines.Len() > 0:
+			case z.Machines.Len() == 0:
+				z.warn(nil).
+					WithField("zone", z.Name).
+					Print("empty")
+			default:
 				m.Zones = append(m.Zones, z)
 			}
 		}
@@ -53,6 +57,10 @@ func (m *Zones) newZone(name string) (*Zone, error) {
 		Name:   name,
 	}
 
+	z.debug().
+		WithField("zone", z.Name).
+		Print("found")
+
 	if err := z.scan(); err != nil {
 		return nil, err
 	}
@@ -149,7 +157,17 @@ func (z *Zone) scan() error {
 				Name:   e.Name(),
 			}
 
+			m.debug().
+				WithField("node", m.Name).
+				WithField("zone", z.Name).
+				Print("found")
+
 			if err := m.init(); err != nil {
+				m.error(err).
+					WithField("node", m.Name).
+					WithField("zone", z.Name).
+					Print()
+
 				return err
 			}