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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,67 @@ | ||
package geth | ||
|
||
import ( | ||
"context" | ||
"math/big" | ||
|
||
"github.com/ethereum-optimism/optimism/op-service/eth" | ||
"github.com/ethereum/go-ethereum/common" | ||
"github.com/ethereum/go-ethereum/common/hexutil" | ||
geth "github.com/ethereum/go-ethereum/eth" | ||
"github.com/ethereum/go-ethereum/rpc" | ||
) | ||
|
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type BlobService struct { | ||
beacon Beacon | ||
backend *geth.EthAPIBackend | ||
} | ||
|
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func blobAPIs(beacon Beacon, backend *geth.EthAPIBackend) []rpc.API { | ||
// Append all the local APIs and return | ||
return []rpc.API{ | ||
{ | ||
Namespace: "eth", | ||
Service: NewBlobService(beacon, backend), | ||
}, | ||
} | ||
} | ||
|
||
func NewBlobService(beacon Beacon, backend *geth.EthAPIBackend) *BlobService { | ||
return &BlobService{beacon: beacon, backend: backend} | ||
} | ||
|
||
func (b *BlobService) GetBlobSidecars(ctx context.Context, blockNumber rpc.BlockNumber) (*eth.BSCBlobSidecars, error) { | ||
//slot := (envelope.ExecutionPayload.Timestamp - f.eth.BlockChain().Genesis().Time()) / f.blockTime | ||
header, err := b.backend.HeaderByNumber(ctx, blockNumber) | ||
if err != nil { | ||
return nil, err | ||
} | ||
slot := (header.Time - b.backend.Genesis().Time()) / 2 | ||
bundle, err := b.beacon.LoadBlobsBundle(slot) | ||
if err != nil { | ||
return nil, err | ||
} | ||
if len(bundle.Blobs) == 0 { | ||
return nil, nil | ||
} | ||
var sidecars eth.BSCBlobSidecars | ||
bn := hexutil.Big(*big.NewInt(blockNumber.Int64())) | ||
oneSidecar := eth.BSCBlobSidecar{ | ||
BlockNumber: &bn, | ||
BlockHash: header.Hash(), | ||
TxIndex: nil, | ||
TxHash: common.Hash{}, | ||
} | ||
blobSize := len(bundle.Blobs) | ||
oneSidecar.BSCBlobTxSidecar.Blobs = make([]eth.Blob, blobSize) | ||
oneSidecar.BSCBlobTxSidecar.Proofs = make([]eth.Bytes48, blobSize) | ||
oneSidecar.BSCBlobTxSidecar.Commitments = make([]eth.Bytes48, blobSize) | ||
for i, blob := range bundle.Blobs { | ||
copy(oneSidecar.BSCBlobTxSidecar.Blobs[i][:], blob) | ||
copy(oneSidecar.BSCBlobTxSidecar.Proofs[i][:], bundle.Proofs[i]) | ||
copy(oneSidecar.BSCBlobTxSidecar.Commitments[i][:], bundle.Commitments[i]) | ||
} | ||
sidecars = append(sidecars, &oneSidecar) | ||
|
||
return &sidecars, nil | ||
} |
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