14b38af8bc
* do binary search to estimate gas Closes #268 - Also refactor ApplyMessage to be more reuseable move binary search to rpc api side to have a clean context each try remove EstimateGas grpc api * extract BinSearch function and add unit test * do estimateGas in grpc query Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>
93 lines
2.3 KiB
Go
93 lines
2.3 KiB
Go
package types
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import (
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"fmt"
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log "github.com/xlab/suplog"
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"github.com/gogo/protobuf/proto"
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sdk "github.com/cosmos/cosmos-sdk/types"
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sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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"github.com/ethereum/go-ethereum/crypto"
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)
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var EmptyCodeHash = crypto.Keccak256(nil)
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// DecodeTxResponse decodes an protobuf-encoded byte slice into TxResponse
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func DecodeTxResponse(in []byte) (*MsgEthereumTxResponse, error) {
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var txMsgData sdk.TxMsgData
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if err := proto.Unmarshal(in, &txMsgData); err != nil {
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log.WithError(err).Errorln("failed to unmarshal TxMsgData")
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return nil, err
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}
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data := txMsgData.GetData()
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if len(data) == 0 {
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return &MsgEthereumTxResponse{}, nil
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}
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var res MsgEthereumTxResponse
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err := proto.Unmarshal(data[0].GetData(), &res)
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if err != nil {
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return nil, sdkerrors.Wrap(err, "failed to unmarshal tx response message data")
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}
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return &res, nil
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}
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// EncodeTransactionLogs encodes TransactionLogs slice into a protobuf-encoded byte slice.
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func EncodeTransactionLogs(res *TransactionLogs) ([]byte, error) {
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return proto.Marshal(res)
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}
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// DecodeTxResponse decodes an protobuf-encoded byte slice into TransactionLogs
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func DecodeTransactionLogs(data []byte) (TransactionLogs, error) {
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var logs TransactionLogs
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err := proto.Unmarshal(data, &logs)
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if err != nil {
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return TransactionLogs{}, err
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}
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return logs, nil
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}
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// UnwrapEthereumMsg extract MsgEthereumTx from wrapping sdk.Tx
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func UnwrapEthereumMsg(tx *sdk.Tx) (*MsgEthereumTx, error) {
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if tx == nil {
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return nil, fmt.Errorf("invalid tx: nil")
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}
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if len((*tx).GetMsgs()) != 1 {
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return nil, fmt.Errorf("invalid tx type: %T", tx)
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}
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msg, ok := (*tx).GetMsgs()[0].(*MsgEthereumTx)
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if !ok {
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return nil, fmt.Errorf("invalid tx type: %T", tx)
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}
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return msg, nil
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}
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// BinSearch execute the binary search and hone in on an executable gas limit
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func BinSearch(lo uint64, hi uint64, executable func(uint64) (bool, *MsgEthereumTxResponse, error)) (uint64, error) {
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for lo+1 < hi {
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mid := (hi + lo) / 2
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failed, _, err := executable(mid)
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// If the error is not nil(consensus error), it means the provided message
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// call or transaction will never be accepted no matter how much gas it is
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// assigned. Return the error directly, don't struggle any more.
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if err != nil {
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return 0, err
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}
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if failed {
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lo = mid
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} else {
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hi = mid
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}
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}
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return hi, nil
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}
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