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package utils
import (
"errors"
"math/big"
"github.com/ethereum-optimism/optimism/indexer/processors/contracts"
"github.com/ethereum-optimism/optimism/op-bindings/bindings"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
)
type CrossDomainMessengerSentMessage struct {
*bindings.CrossDomainMessengerSentMessage
Value *big.Int
MessageHash common.Hash
}
func ParseCrossDomainMessage(sentMessageReceipt *types.Receipt) (CrossDomainMessengerSentMessage, error) {
abi, err := bindings.CrossDomainMessengerMetaData.GetAbi()
if err != nil {
return CrossDomainMessengerSentMessage{}, err
}
sentMessageEventAbi := abi.Events["SentMessage"]
messenger, err := bindings.NewCrossDomainMessenger(common.Address{}, nil)
if err != nil {
return CrossDomainMessengerSentMessage{}, err
}
for i, log := range sentMessageReceipt.Logs {
if len(log.Topics) > 0 && log.Topics[0] == sentMessageEventAbi.ID {
sentMessage, err := messenger.ParseSentMessage(*log)
if err != nil {
return CrossDomainMessengerSentMessage{}, err
}
sentMessageExtension, err := messenger.ParseSentMessageExtension1(*sentMessageReceipt.Logs[i+1])
if err != nil {
return CrossDomainMessengerSentMessage{}, err
}
msgHash, err := CrossDomainMessengerSentMessageHash(sentMessage, sentMessageExtension.Value)
if err != nil {
return CrossDomainMessengerSentMessage{}, err
}
return CrossDomainMessengerSentMessage{sentMessage, sentMessageExtension.Value, msgHash}, nil
}
}
return CrossDomainMessengerSentMessage{}, errors.New("missing SentMessage receipts")
}
func CrossDomainMessengerSentMessageHash(sentMessage *bindings.CrossDomainMessengerSentMessage, value *big.Int) (common.Hash, error) {
abi, err := bindings.CrossDomainMessengerMetaData.GetAbi()
if err != nil {
return common.Hash{}, err
}
calldata, err := contracts.CrossDomainMessageCalldata(abi, sentMessage, value)
if err != nil {
return common.Hash{}, err
}
return crypto.Keccak256Hash(calldata), nil
}