feat: add da blob client aws s3 (#1209)

* feat: add blob client aws s3

* go mod tidy

* chore: auto version bump [bot]

cmd/geth/main.go

@@ -182,6 +182,7 @@ var (
 		utils.DABlockNativeAPIEndpointFlag,
 		utils.DABlobScanAPIEndpointFlag,
 		utils.DABeaconNodeAPIEndpointFlag,
+		utils.DAAwsS3BlobAPIEndpointFlag,
 		utils.DARecoveryModeFlag,
 		utils.DARecoveryInitialL1BlockFlag,
 		utils.DARecoveryInitialBatchFlag,

cmd/geth/usage.go

@@ -240,6 +240,7 @@ var AppHelpFlagGroups = []flags.FlagGroup{
 			utils.DABlobScanAPIEndpointFlag,
 			utils.DABlockNativeAPIEndpointFlag,
 			utils.DABeaconNodeAPIEndpointFlag,
+			utils.DAAwsS3BlobAPIEndpointFlag,
 			utils.DARecoveryModeFlag,
 			utils.DARecoveryInitialL1BlockFlag,
 			utils.DARecoveryInitialBatchFlag,

cmd/utils/flags.go

@@ -920,6 +920,10 @@ var (
 		Name:  "da.blob.beaconnode",
 		Usage: "Beacon node API endpoint",
 	}
+	DAAwsS3BlobAPIEndpointFlag = cli.StringFlag{
+		Name:  "da.blob.awss3",
+		Usage: "AWS S3 blob API endpoint",
+	}
 	DARecoveryModeFlag = cli.BoolFlag{
 		Name:  "da.recovery",
 		Usage: "Enable recovery mode for DA syncing",
@@ -1699,6 +1703,9 @@ func setDA(ctx *cli.Context, cfg *ethconfig.Config) {
 	if ctx.IsSet(DABeaconNodeAPIEndpointFlag.Name) {
 		cfg.DA.BeaconNodeAPIEndpoint = ctx.String(DABeaconNodeAPIEndpointFlag.Name)
 	}
+	if ctx.IsSet(DAAwsS3BlobAPIEndpointFlag.Name) {
+		cfg.DA.AwsS3BlobAPIEndpoint = ctx.String(DAAwsS3BlobAPIEndpointFlag.Name)
+	}
 	if ctx.IsSet(DARecoveryModeFlag.Name) {
 		cfg.DA.RecoveryMode = ctx.Bool(DARecoveryModeFlag.Name)
 	}

params/version.go

@@ -24,7 +24,7 @@ import (
 const (
 	VersionMajor = 5         // Major version component of the current release
 	VersionMinor = 8         // Minor version component of the current release
-	VersionPatch = 64        // Patch version component of the current release
+	VersionPatch = 65        // Patch version component of the current release
 	VersionMeta  = "mainnet" // Version metadata to append to the version string
 )
 

rollup/da_syncer/blob_client/aws_s3_client.go

@@ -0,0 +1,80 @@
+package blob_client
+
+import (
+	"context"
+	"crypto/sha256"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"time"
+
+	"github.com/scroll-tech/go-ethereum/common"
+	"github.com/scroll-tech/go-ethereum/common/hexutil"
+	"github.com/scroll-tech/go-ethereum/crypto/kzg4844"
+)
+
+const (
+	AwsS3DefaultTimeout = 15 * time.Second
+)
+
+type AwsS3Client struct {
+	client      *http.Client
+	apiEndpoint string
+}
+
+func NewAwsS3Client(apiEndpoint string) *AwsS3Client {
+	return &AwsS3Client{
+		apiEndpoint: apiEndpoint,
+		client:      &http.Client{Timeout: AwsS3DefaultTimeout},
+	}
+}
+
+func (c *AwsS3Client) GetBlobByVersionedHashAndBlockTime(ctx context.Context, versionedHash common.Hash, blockTime uint64) (*kzg4844.Blob, error) {
+	// Scroll mainnet blob data AWS S3 endpoint:  https://scroll-mainnet-blob-data.s3.us-west-2.amazonaws.com/
+	// Scroll sepolia blob data AWS S3 endpoint:  https://scroll-sepolia-blob-data.s3.us-west-2.amazonaws.com/
+	path, err := url.JoinPath(c.apiEndpoint, versionedHash.String())
+	if err != nil {
+		return nil, fmt.Errorf("failed to join path, err: %w", err)
+	}
+	req, err := http.NewRequestWithContext(ctx, "GET", path, nil)
+	if err != nil {
+		return nil, fmt.Errorf("cannot create request, err: %w", err)
+	}
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("cannot do request, err: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		body, err := io.ReadAll(resp.Body)
+		if err != nil {
+			return nil, fmt.Errorf("aws s3 request failed with status: %s: could not read response body: %w", resp.Status, err)
+		}
+		bodyStr := string(body)
+		return nil, fmt.Errorf("aws s3 request failed, status: %s, body: %s", resp.Status, bodyStr)
+	}
+
+	var blob kzg4844.Blob
+	buf := blob[:]
+	if n, err := io.ReadFull(resp.Body, buf); err != nil {
+		if err == io.ErrUnexpectedEOF || err == io.EOF {
+			return nil, fmt.Errorf("blob data too short: got %d bytes", n)
+		}
+		return nil, fmt.Errorf("failed to read blob data: %w", err)
+	}
+
+	// sanity check that retrieved blob matches versioned hash
+	commitment, err := kzg4844.BlobToCommitment(&blob)
+	if err != nil {
+		return nil, fmt.Errorf("failed to convert blob to commitment, err: %w", err)
+	}
+
+	blobVersionedHash := kzg4844.CalcBlobHashV1(sha256.New(), &commitment)
+	if blobVersionedHash != versionedHash {
+		return nil, fmt.Errorf("blob versioned hash mismatch, expected: %s, got: %s", versionedHash.String(), hexutil.Encode(blobVersionedHash[:]))
+	}
+
+	return &blob, nil
+}

rollup/da_syncer/syncing_pipeline.go

@@ -23,6 +23,7 @@ type Config struct {
 	BlobScanAPIEndpoint    string // BlobScan blob api endpoint
 	BlockNativeAPIEndpoint string // BlockNative blob api endpoint
 	BeaconNodeAPIEndpoint  string // Beacon node api endpoint
+	AwsS3BlobAPIEndpoint   string // AWS S3 blob data api endpoint
 
 	RecoveryMode   bool   // Recovery mode is used to override existing blocks with the blocks read from the pipeline and start from a specific L1 block and batch
 	InitialL1Block uint64 // L1 block in which the InitialBatch was committed (or any earlier L1 block but requires more RPC requests)
@@ -74,6 +75,9 @@ func NewSyncingPipeline(ctx context.Context, blockchain *core.BlockChain, genesi
 	if config.BlockNativeAPIEndpoint != "" {
 		blobClientList.AddBlobClient(blob_client.NewBlockNativeClient(config.BlockNativeAPIEndpoint))
 	}
+	if config.AwsS3BlobAPIEndpoint != "" {
+		blobClientList.AddBlobClient(blob_client.NewAwsS3Client(config.AwsS3BlobAPIEndpoint))
+	}
 	if blobClientList.Size() == 0 {
 		return nil, errors.New("DA syncing is enabled but no blob client is configured. Please provide at least one blob client via command line flag")
 	}

rollup/rollup_sync_service/rollup_sync_service.go

@@ -114,6 +114,9 @@ func NewRollupSyncService(ctx context.Context, genesisConfig *params.ChainConfig
 	if config.BlockNativeAPIEndpoint != "" {
 		blobClientList.AddBlobClient(blob_client.NewBlockNativeClient(config.BlockNativeAPIEndpoint))
 	}
+	if config.AwsS3BlobAPIEndpoint != "" {
+		blobClientList.AddBlobClient(blob_client.NewAwsS3Client(config.AwsS3BlobAPIEndpoint))
+	}
 	if blobClientList.Size() == 0 {
 		return nil, errors.New("no blob client is configured for rollup verifier. Please provide at least one blob client via command line flag")
 	}