channeldb: move node ID/addr funds to node.go

channeldb/nodes.go

@@ -1 +1,54 @@
 package channeldb
+
+import (
+	"fmt"
+
+	"golang.org/x/crypto/ripemd160"
+
+	"github.com/boltdb/bolt"
+	"github.com/btcsuite/btcutil"
+)
+
+var (
+	idBucket = []byte("i")
+)
+
+// PutIdKey saves the hash160 of the public key used for our identity within
+// the Lightning Network.
+func (d *DB) PutIdKey(pkh []byte) error {
+	return d.db.Update(func(tx *bolt.Tx) error {
+		// Get the bucket dedicated to storing the meta-data for open
+		// channels.
+		bucket, err := tx.CreateBucketIfNotExists(idBucket)
+		if err != nil {
+			return err
+		}
+
+		return bucket.Put(identityKey, pkh)
+	})
+}
+
+// GetIdKey returns the hash160 of the public key used for out identity within
+// the Lightning Network as a p2pkh bitcoin address.
+func (d *DB) GetIdAdr() (*btcutil.AddressPubKeyHash, error) {
+	pkh := make([]byte, ripemd160.Size)
+	err := d.db.View(func(tx *bolt.Tx) error {
+		// Get the bucket dedicated to storing the meta-data for open
+		// channels.
+		bucket := tx.Bucket(idBucket)
+		if bucket == nil {
+			return fmt.Errorf("id bucket not created")
+		}
+
+		pkBytes := bucket.Get(identityKey)
+		copy(pkh, pkBytes)
+
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	log.Infof("identity key has length %d", len(pkh))
+	return btcutil.NewAddressPubKeyHash(pkh, ActiveNetParams)
+}