lncli: add flag skip_peer_alias_lookup to fwdinghistory

A new flag skip_peer_alias_lookup is introduced that communicates to the
server if the peer alias lookup per forwarding event should be skipped
in order to improve performance.

cmd/lncli/cmd_payments.go

@@ -1297,6 +1297,11 @@ var forwardingHistoryCommand = cli.Command{
 			Name:  "max_events",
 			Usage: "the max number of events to return",
 		},
+		cli.BoolFlag{
+			Name: "skip_peer_alias_lookup",
+			Usage: "skip the peer alias lookup per forwarding " +
+				"event in order to improve performance",
+		},
 	},
 	Action: actionDecorator(forwardingHistory),
 }
@@ -1347,7 +1352,8 @@ func forwardingHistory(ctx *cli.Context) error {
 	case args.Present():
 		i, err := strconv.ParseInt(args.First(), 10, 64)
 		if err != nil {
-			return fmt.Errorf("unable to decode index_offset: %v", err)
+			return fmt.Errorf("unable to decode index_offset: %v",
+				err)
 		}
 		indexOffset = uint32(i)
 		args = args.Tail()
@@ -1359,16 +1365,18 @@ func forwardingHistory(ctx *cli.Context) error {
 	case args.Present():
 		m, err := strconv.ParseInt(args.First(), 10, 64)
 		if err != nil {
-			return fmt.Errorf("unable to decode max_events: %v", err)
+			return fmt.Errorf("unable to decode max_events: %v",
+				err)
 		}
 		maxEvents = uint32(m)
 	}
 
 	req := &lnrpc.ForwardingHistoryRequest{
-		StartTime:    startTime,
+		StartTime:           startTime,
-		EndTime:      endTime,
+		EndTime:             endTime,
-		IndexOffset:  indexOffset,
+		IndexOffset:         indexOffset,
-		NumMaxEvents: maxEvents,
+		NumMaxEvents:        maxEvents,
+		SkipPeerAliasLookup: ctx.Bool("skip_peer_alias_lookup"),
 	}
 	resp, err := client.ForwardingHistory(ctxc, req)
 	if err != nil {