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client_bedrock.go
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/
client_bedrock.go
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// Copyright 2023 Coinbase, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package optimism
import (
"context"
"encoding/json"
"errors"
"math/big"
ethereum "github.com/ethereum-optimism/optimism/l2geth"
"github.com/ethereum-optimism/optimism/l2geth/common/hexutil"
Eth "github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
EthCommon "github.com/ethereum/go-ethereum/common"
EthTypes "github.com/ethereum/go-ethereum/core/types"
)
// IsPreBedrock returns if the given block number is before the bedrock block.
func (c *Client) IsPreBedrock(b *big.Int) bool {
return c.bedrockBlock == nil || b.Cmp(c.bedrockBlock) < 0
}
// SuggestGasPrice retrieves the currently suggested gas price
func (ec *Client) SuggestGasTipCap(ctx context.Context) (*big.Int, error) {
var hex hexutil.Big
if err := ec.c.CallContext(ctx, &hex, "eth_maxPriorityFeePerGas"); err != nil {
return nil, err
}
return hex.ToInt(), nil
}
// BaseFee returns the current base fee per gas
func (ec *Client) BaseFee(ctx context.Context) (*big.Int, error) {
type header struct {
BaseFee hexutil.Big `json:"baseFeePerGas"`
}
var head *header
if err := ec.c.CallContext(ctx, &head, "eth_getBlockByNumber", "latest", false); err != nil {
return nil, err
}
if head == nil {
return nil, ethereum.NotFound
}
return head.BaseFee.ToInt(), nil
}
// rpcBedrockBlock is a post-bedrock block.
type rpcBedrockBlock struct {
Hash EthCommon.Hash `json:"hash"`
Transactions []BedrockRPCTransaction `json:"transactions"`
UncleHashes []EthCommon.Hash `json:"uncles"`
}
// BedrockRPCTransaction is a post-bedrock transaction.
type BedrockRPCTransaction struct {
Tx InnerBedrockTransaction `json:"tx"`
TxExtraInfo
}
// UnmarshalJSON unmarshals an [BedrockRPCTransaction] from bytes.
func (tx *BedrockRPCTransaction) UnmarshalJSON(msg []byte) error {
var innerTx transaction
if err := json.Unmarshal(msg, &innerTx); err != nil {
return err
}
tx.Tx = &innerTx
return json.Unmarshal(msg, &tx.TxExtraInfo)
}
type TxExtraInfo struct {
BlockNumber *string `json:"blockNumber,omitempty"`
BlockHash *EthCommon.Hash `json:"blockHash,omitempty"`
From *EthCommon.Address `json:"from,omitempty"`
TxHash *EthCommon.Hash `json:"hash,omitempty"`
}
// parseBedrockBlock returns a [EthTypes.Header] and [rpcBedrockBlock] for a given block or a respective error.
func (c *Client) parseBedrockBlock(raw *json.RawMessage) (
*rpcHeader,
*rpcBedrockBlock,
error,
) {
// Decode bedrock header and transactions
var head rpcHeader
var body rpcBedrockBlock
if err := json.Unmarshal(*raw, &head); err != nil {
return nil, nil, err
}
if err := json.Unmarshal(*raw, &body); err != nil {
return nil, nil, err
}
return &head, &body, nil
}
// RosettaTxReceipt is a Rosetta-compatible receipt type.
type RosettaTxReceipt struct {
Type uint8 `json:"type,omitempty"`
GasPrice *big.Int
GasUsed *big.Int
TransactionFee *big.Int
Logs []*EthTypes.Log
RawMessage json.RawMessage
}
// bedrockTransaction is a post-bedrock transaction type.
type bedrockTransaction struct {
Transaction InnerBedrockTransaction
From *EthCommon.Address
BlockNumber *string
BlockHash *EthCommon.Hash
TxHash *EthCommon.Hash // may not equal Transaction.Hash() due to state sync indicator
FeeAmount *big.Int
FeeBurned *big.Int // nil if no fees were burned
Miner string
Status bool
Trace []*FlatCall
RawTrace json.RawMessage
Receipt *RosettaTxReceipt
BaseFee *big.Int
}
// L1ToL2DepositType is the transaction type for L1ToL2 deposits.
const L1ToL2DepositType = 126 // (126)
// IsDepositTx returns true if the transaction is a deposit tx type.
func (bt *bedrockTransaction) IsDepositTx() bool {
return bt.Transaction.GetType() == L1ToL2DepositType
}
// LoadTransaction constructs a [bedrockTransaction] from a [BedrockRPCTransaction].
//
//nolint:golint
func (tx *BedrockRPCTransaction) LoadTransaction() *bedrockTransaction {
ethTx := &bedrockTransaction{
Transaction: tx.Tx,
From: tx.TxExtraInfo.From,
TxHash: tx.TxHash,
BlockNumber: tx.TxExtraInfo.BlockNumber,
BlockHash: tx.TxExtraInfo.BlockHash,
}
return ethTx
}
func toCallArg(msg Eth.CallMsg) interface{} {
arg := map[string]interface{}{
"from": msg.From,
"to": msg.To,
}
if len(msg.Data) > 0 {
arg["data"] = hexutil.Bytes(msg.Data)
}
if msg.Value != nil {
arg["value"] = (*hexutil.Big)(msg.Value)
}
if msg.Gas != 0 {
arg["gas"] = hexutil.Uint64(msg.Gas)
}
if msg.GasPrice != nil {
arg["gasPrice"] = (*hexutil.Big)(msg.GasPrice)
}
return arg
}
func (ec *Client) CallContract(ctx context.Context, call Eth.CallMsg, blockNumber *big.Int) ([]byte, error) {
var hex hexutil.Bytes
err := ec.c.CallContext(ctx, &hex, "eth_call", toCallArg(call), toBlockNumArg(blockNumber))
if err != nil {
return nil, err
}
return hex, nil
}
// Dummy implementations to ensure we can leverage bind.ContractBackend interface for reusing the TCP connection
// Error out for now, and we can implement in the future if it's necessary
func (ec *Client) CodeAt(ctx context.Context, contract common.Address, blockNumber *big.Int) ([]byte, error) {
return nil, errors.New("CodeAt is not implemented")
}
func (ec *Client) PendingCodeAt(ctx context.Context, account common.Address) ([]byte, error) {
return nil, errors.New("PendingCodeAt is not implemented")
}
func (ec *Client) HeaderByNumber(ctx context.Context, number *big.Int) (*EthTypes.Header, error) {
return nil, errors.New("HeaderByNumber is not implemented")
}
func (ec *Client) FilterLogs(ctx context.Context, query Eth.FilterQuery) ([]EthTypes.Log, error) {
return nil, errors.New("FilterLogs is not implemented")
}
func (ec *Client) SubscribeFilterLogs(ctx context.Context, query Eth.FilterQuery, ch chan<- EthTypes.Log) (Eth.Subscription, error) {
return nil, errors.New("SubscribeFilterLogs is not implemented")
}