From 0c0c417829fa9bda3d2d8a45fca0a1e37ca6e500 Mon Sep 17 00:00:00 2001
From: jonastheis <4181434+jonastheis@users.noreply.github.com>
Date: Tue, 31 Dec 2024 13:55:38 +0800
Subject: [PATCH] adjust Sender to support multiple blobs when sending a
 transaction

---
 rollup/internal/controller/sender/sender.go | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/rollup/internal/controller/sender/sender.go b/rollup/internal/controller/sender/sender.go
index daf4e7b54..cbb8f9e01 100644
--- a/rollup/internal/controller/sender/sender.go
+++ b/rollup/internal/controller/sender/sender.go
@@ -171,7 +171,7 @@ func (s *Sender) getFeeData(target *common.Address, data []byte, sidecar *gethTy
 }
 
 // SendTransaction send a signed L2tL1 transaction.
-func (s *Sender) SendTransaction(contextID string, target *common.Address, data []byte, blob *kzg4844.Blob, fallbackGasLimit uint64) (common.Hash, error) {
+func (s *Sender) SendTransaction(contextID string, target *common.Address, data []byte, blobs []*kzg4844.Blob, fallbackGasLimit uint64) (common.Hash, error) {
 	s.metrics.sendTransactionTotal.WithLabelValues(s.service, s.name).Inc()
 	var (
 		feeData *FeeData
@@ -179,7 +179,7 @@ func (s *Sender) SendTransaction(contextID string, target *common.Address, data
 		err     error
 	)
 
-	if blob != nil {
+	if blobs != nil {
 		// check that number of pending blob-carrying txs is not too big
 		if s.senderType == types.SenderTypeCommitBatch {
 			var numPendingTransactions int64
@@ -197,7 +197,7 @@ func (s *Sender) SendTransaction(contextID string, target *common.Address, data
 			}
 
 		}
-		sidecar, err = makeSidecar(blob)
+		sidecar, err = makeSidecar(blobs)
 		if err != nil {
 			log.Error("failed to make sidecar for blob transaction", "error", err)
 			return common.Hash{}, fmt.Errorf("failed to make sidecar for blob transaction, err: %w", err)
@@ -681,12 +681,16 @@ func (s *Sender) getBlockNumberAndBaseFeeAndBlobFee(ctx context.Context) (uint64
 	return header.Number.Uint64() - 1, baseFee, blobBaseFee, nil
 }
 
-func makeSidecar(blob *kzg4844.Blob) (*gethTypes.BlobTxSidecar, error) {
-	if blob == nil {
-		return nil, errors.New("blob cannot be nil")
+func makeSidecar(blobsInput []*kzg4844.Blob) (*gethTypes.BlobTxSidecar, error) {
+	if blobsInput == nil {
+		return nil, errors.New("blobs cannot be nil")
+	}
+
+	blobs := make([]kzg4844.Blob, len(blobsInput))
+	for i, blob := range blobsInput {
+		blobs[i] = *blob
 	}
 
-	blobs := []kzg4844.Blob{*blob}
 	var commitments []kzg4844.Commitment
 	var proofs []kzg4844.Proof