routerrpc: add XAddLocalChanAliases & XDeleteLocalChanAliases

lnrpc/marshall_utils.go

@@ -3,15 +3,18 @@ package lnrpc
 import (
 	"encoding/hex"
 	"errors"
-	fmt "fmt"
+	"fmt"
 
 	"github.com/btcsuite/btcd/btcutil"
 	"github.com/btcsuite/btcd/chaincfg"
 	"github.com/btcsuite/btcd/txscript"
 	"github.com/btcsuite/btcd/wire"
 	"github.com/btcsuite/btcwallet/wallet"
+	"github.com/lightningnetwork/lnd/aliasmgr"
+	"github.com/lightningnetwork/lnd/fn"
 	"github.com/lightningnetwork/lnd/lnwallet"
 	"github.com/lightningnetwork/lnd/lnwire"
+	"golang.org/x/exp/maps"
 )
 
 var (
@@ -207,3 +210,16 @@ func UnmarshallCoinSelectionStrategy(strategy CoinSelectionStrategy,
 			"%v", strategy)
 	}
 }
+
+// MarshalAliasMap converts a ScidAliasMap to its proto counterpart. This is
+// used in various RPCs that handle scid alias mappings.
+func MarshalAliasMap(scidMap aliasmgr.ScidAliasMap) []*AliasMap {
+	return fn.Map(func(base lnwire.ShortChannelID) *AliasMap {
+		return &AliasMap{
+			BaseScid: base.ToUint64(),
+			Aliases: fn.Map(func(a lnwire.ShortChannelID) uint64 {
+				return a.ToUint64()
+			}, scidMap[base]),
+		}
+	}, maps.Keys(scidMap))
+}