Initial commit

Initial public review release v0.10.0

lib/implementations/peerstore.go

@@ -0,0 +1,74 @@
+package implementations
+
+import (
+	"crypto/ecdsa"
+
+	"github.com/multiformats/go-multiaddr"
+	"github.com/nspcc-dev/neofs-node/internal"
+	"github.com/nspcc-dev/neofs-node/lib/peers"
+	"github.com/pkg/errors"
+	"go.uber.org/zap"
+)
+
+type (
+	// AddressStoreComponent is an interface of encapsulated AddressStore and NodePublicKeyReceiver pair.
+	AddressStoreComponent interface {
+		AddressStore
+		NodePublicKeyReceiver
+	}
+
+	// AddressStore is an interface of the container of local Multiaddr.
+	AddressStore interface {
+		SelfAddr() (multiaddr.Multiaddr, error)
+	}
+
+	// NodePublicKeyReceiver is an interface of Multiaddr to PublicKey converter.
+	NodePublicKeyReceiver interface {
+		PublicKey(multiaddr.Multiaddr) *ecdsa.PublicKey
+	}
+
+	addressStore struct {
+		ps peers.Store
+
+		log *zap.Logger
+	}
+)
+
+const (
+	addressStoreInstanceFailMsg = "could not create address store"
+	errEmptyPeerStore           = internal.Error("empty peer store")
+
+	errEmptyAddressStore = internal.Error("empty address store")
+)
+
+func (s addressStore) SelfAddr() (multiaddr.Multiaddr, error) { return s.ps.GetAddr(s.ps.SelfID()) }
+
+func (s addressStore) PublicKey(mAddr multiaddr.Multiaddr) (res *ecdsa.PublicKey) {
+	if peerID, err := s.ps.AddressID(mAddr); err != nil {
+		s.log.Error("could not peer ID",
+			zap.Stringer("node", mAddr),
+			zap.Error(err),
+		)
+	} else if res, err = s.ps.GetPublicKey(peerID); err != nil {
+		s.log.Error("could not receive public key",
+			zap.Stringer("peer", peerID),
+			zap.Error(err),
+		)
+	}
+
+	return res
+}
+
+// NewAddressStore wraps peer store and returns AddressStoreComponent.
+func NewAddressStore(ps peers.Store, log *zap.Logger) (AddressStoreComponent, error) {
+	if ps == nil {
+		return nil, errors.Wrap(errEmptyPeerStore, addressStoreInstanceFailMsg)
+	} else if log == nil {
+		return nil, errors.Wrap(errEmptyLogger, addressStoreInstanceFailMsg)
+	}
+
+	return &addressStore{
+		ps:  ps,
+		log: log,
+	}, nil
+}