routing: invalid channels updatechanpolicy call

cmd/lncli/commands.go

@@ -2311,7 +2311,22 @@ func updateChannelPolicy(ctx *cli.Context) error {
 		return err
 	}
 
-	printRespJSON(resp)
+	// Parse the response into the final json object that will be printed
+	// to stdout. At the moment, this filters out the raw txid bytes from
+	// each failed update's outpoint and only prints the txid string.
+	var listFailedUpdateResp = struct {
+		FailedUpdates []*FailedUpdate `json:"failed_updates"`
+	}{
+		FailedUpdates: make([]*FailedUpdate, 0, len(resp.FailedUpdates)),
+	}
+	for _, protoUpdate := range resp.FailedUpdates {
+		failedUpdate := NewFailedUpdateFromProto(protoUpdate)
+		listFailedUpdateResp.FailedUpdates = append(
+			listFailedUpdateResp.FailedUpdates, failedUpdate)
+	}
+
+	printJSON(listFailedUpdateResp)
+
 	return nil
 }
 

cmd/lncli/types.go

@@ -66,3 +66,22 @@ func NewUtxoFromProto(utxo *lnrpc.Utxo) *Utxo {
 		Confirmations: utxo.Confirmations,
 	}
 }
+
+// FailedUpdate displays information about a failed update, including its
+// address, reason and update error.
+type FailedUpdate struct {
+	OutPoint    OutPoint `json:"outpoint"`
+	Reason      string   `json:"reason"`
+	UpdateError string   `json:"update_error"`
+}
+
+// NewFailedUpdateFromProto creates a display from the FailedUpdate
+// proto. This filters out the raw txid bytes from the provided outpoint,
+// which will otherwise be printed in base64.
+func NewFailedUpdateFromProto(update *lnrpc.FailedUpdate) *FailedUpdate {
+	return &FailedUpdate{
+		OutPoint:    NewOutPointFromProto(update.Outpoint),
+		Reason:      update.Reason.String(),
+		UpdateError: update.UpdateError,
+	}
+}