forked from hyperledger-labs/perun-eth-backend
/
error.go
62 lines (54 loc) · 2.13 KB
/
error.go
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// Copyright 2022 - See NOTICE file for copyright holders.
//
// 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 channel
import (
"context"
stderrors "errors"
"math/big"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/core/types"
cherrors "github.com/perun-network/perun-eth-backend/channel/errors"
"github.com/pkg/errors"
)
// ErrTxFailed signals a failed, i.e., reverted, transaction.
var ErrTxFailed = stderrors.New("transaction failed")
// IsErrTxFailed returns whether the cause of the error was a failed transaction.
func IsErrTxFailed(err error) bool {
return errors.Is(err, ErrTxFailed)
}
func errorReason(ctx context.Context, b *ContractBackend, tx *types.Transaction, blockNum *big.Int, acc accounts.Account) (string, error) {
msg := ethereum.CallMsg{
From: acc.Address,
To: tx.To(),
Gas: tx.Gas(),
GasPrice: tx.GasPrice(),
Value: tx.Value(),
Data: tx.Data(),
}
res, err := b.CallContract(ctx, msg, blockNum)
if err != nil {
err = cherrors.CheckIsChainNotReachableError(err)
return "", errors.WithMessage(err, "CallContract")
}
reason, err := abi.UnpackRevert(res)
return reason, errors.Wrap(err, "unpacking revert reason")
}
// ErrInvalidContractCode signals invalid bytecode at given address, such as incorrect or no code.
var ErrInvalidContractCode = stderrors.New("invalid bytecode at address")
// IsErrInvalidContractCode returns whether the cause of the error was a invalid bytecode.
func IsErrInvalidContractCode(err error) bool {
return errors.Is(err, ErrInvalidContractCode)
}