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package contracts
import (
"math/big"
"github.com/ethereum-optimism/optimism/indexer/database"
"github.com/ethereum-optimism/optimism/op-bindings/bindings"
"github.com/ethereum/go-ethereum/common"
)
type LegacyBridgeEvent struct {
Event *database.ContractEvent
BridgeTransfer database.BridgeTransfer
}
func L1StandardBridgeLegacyDepositInitiatedEvents(contractAddress common.Address, db *database.DB, fromHeight, toHeight *big.Int) ([]LegacyBridgeEvent, error) {
// The L1StandardBridge ABI contains the legacy events
l1StandardBridgeAbi, err := bindings.L1StandardBridgeMetaData.GetAbi()
if err != nil {
return nil, err
}
ethDepositEventAbi := l1StandardBridgeAbi.Events["ETHDepositInitiated"]
erc20DepositEventAbi := l1StandardBridgeAbi.Events["ERC20DepositInitiated"]
// Grab both ETH & ERC20 Events
contractEventFilter := database.ContractEvent{ContractAddress: contractAddress, EventSignature: ethDepositEventAbi.ID}
ethDepositEvents, err := db.ContractEvents.L1ContractEventsWithFilter(contractEventFilter, fromHeight, toHeight)
if err != nil {
return nil, err
}
contractEventFilter.EventSignature = erc20DepositEventAbi.ID
erc20DepositEvents, err := db.ContractEvents.L1ContractEventsWithFilter(contractEventFilter, fromHeight, toHeight)
if err != nil {
return nil, err
}
// Represent the ETH deposits via the ETH ERC20 predeploy address
deposits := make([]LegacyBridgeEvent, len(ethDepositEvents)+len(erc20DepositEvents))
for i := range ethDepositEvents {
bridgeEvent := bindings.L1StandardBridgeETHDepositInitiated{Raw: *ethDepositEvents[i].RLPLog}
err := UnpackLog(&bridgeEvent, &bridgeEvent.Raw, ethDepositEventAbi.Name, l1StandardBridgeAbi)
if err != nil {
return nil, err
}
deposits[i] = LegacyBridgeEvent{
Event: ðDepositEvents[i].ContractEvent,
BridgeTransfer: database.BridgeTransfer{
TokenPair: database.ETHTokenPair,
Tx: database.Transaction{
FromAddress: bridgeEvent.From,
ToAddress: bridgeEvent.To,
Amount: bridgeEvent.Amount,
Data: bridgeEvent.ExtraData,
Timestamp: ethDepositEvents[i].Timestamp,
},
},
}
}
for i := range erc20DepositEvents {
bridgeEvent := bindings.L1StandardBridgeERC20DepositInitiated{Raw: *erc20DepositEvents[i].RLPLog}
err := UnpackLog(&bridgeEvent, &bridgeEvent.Raw, erc20DepositEventAbi.Name, l1StandardBridgeAbi)
if err != nil {
return nil, err
}
deposits[len(ethDepositEvents)+i] = LegacyBridgeEvent{
Event: &erc20DepositEvents[i].ContractEvent,
BridgeTransfer: database.BridgeTransfer{
TokenPair: database.TokenPair{LocalTokenAddress: bridgeEvent.L1Token, RemoteTokenAddress: bridgeEvent.L2Token},
Tx: database.Transaction{
FromAddress: bridgeEvent.From,
ToAddress: bridgeEvent.To,
Amount: bridgeEvent.Amount,
Data: bridgeEvent.ExtraData,
Timestamp: erc20DepositEvents[i].Timestamp,
},
},
}
}
return deposits, nil
}
func L2StandardBridgeLegacyWithdrawalInitiatedEvents(contractAddress common.Address, db *database.DB, fromHeight, toHeight *big.Int) ([]LegacyBridgeEvent, error) {
// The L2StandardBridge ABI contains the legacy events
l2StandardBridgeAbi, err := bindings.L2StandardBridgeMetaData.GetAbi()
if err != nil {
return nil, err
}
withdrawalInitiatedEventAbi := l2StandardBridgeAbi.Events["WithdrawalInitiated"]
contractEventFilter := database.ContractEvent{ContractAddress: contractAddress, EventSignature: withdrawalInitiatedEventAbi.ID}
withdrawalEvents, err := db.ContractEvents.L2ContractEventsWithFilter(contractEventFilter, fromHeight, toHeight)
if err != nil {
return nil, err
}
withdrawals := make([]LegacyBridgeEvent, len(withdrawalEvents))
for i := range withdrawalEvents {
bridgeEvent := bindings.L2StandardBridgeWithdrawalInitiated{Raw: *withdrawalEvents[i].RLPLog}
err := UnpackLog(&bridgeEvent, &bridgeEvent.Raw, withdrawalInitiatedEventAbi.Name, l2StandardBridgeAbi)
if err != nil {
return nil, err
}
withdrawals[i] = LegacyBridgeEvent{
Event: &withdrawalEvents[i].ContractEvent,
BridgeTransfer: database.BridgeTransfer{
TokenPair: database.ETHTokenPair,
Tx: database.Transaction{
FromAddress: bridgeEvent.From,
ToAddress: bridgeEvent.To,
Amount: bridgeEvent.Amount,
Data: bridgeEvent.ExtraData,
Timestamp: withdrawalEvents[i].Timestamp,
},
},
}
}
return withdrawals, nil
}