fix(ARCO-212): No error if tx not in mempool

internal/node_client/node_client.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"runtime"
+	"strings"
 
 	sdkTx "github.com/bitcoin-sv/go-sdk/transaction"
 	"github.com/ordishs/go-bitcoin"
@@ -50,6 +51,8 @@ func New(n *bitcoin.Bitcoind, opts ...func(client *NodeClient)) (NodeClient, err
 	return node, nil
 }
 
+var ErrTransactionNotInMempool = errors.New("Transaction not in mempool")
+
 func (n NodeClient) GetMempoolAncestors(ctx context.Context, ids []string) ([]string, error) {
 	_, span := tracing.StartTracing(ctx, "NodeClient_GetMempoolAncestors", n.tracingEnabled, n.tracingAttributes...)
 	defer tracing.EndTracing(span)
@@ -61,6 +64,10 @@ func (n NodeClient) GetMempoolAncestors(ctx context.Context, ids []string) ([]st
 		nTx, err := n.bitcoinClient.GetMempoolAncestors(id, false)
 		tracing.EndTracing(span)
 		if err != nil {
+			if strings.Contains(err.Error(), "Transaction not in mempool") {
+				continue
+			}
+
 			return nil, errors.Join(ErrFailedToGetMempoolAncestors, err)
 		}
 

internal/node_client/node_client_test.go

@@ -155,5 +155,11 @@ func TestNodeClient(t *testing.T) {
 
 		// then
 		require.ErrorIs(t, err, node_client.ErrFailedToGetMempoolAncestors)
+
+		// when
+		_, err = sut.GetMempoolAncestors(ctx, []string{"792bb5c0d5e4937572e6368dc713ba0b4935d27a7b7ac654c2b384d6c8b2fb89"})
+
+		// then
+		require.ErrorIs(t, err, node_client.ErrTransactionNotInMempool)
 	})
 }