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ethclient: add CallContractAtHash (#24355)

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* add CallContractAtHash to ethclient

* add docstring and test

* optimize test

* ethclient: nits

Co-authored-by: Péter Szilágyi <peterke@gmail.com>
This commit is contained in:
zhiqiangxu
2022-02-15 17:55:55 +08:00
committed by GitHub
parent f01e2fab07
commit e98114da4f
2 changed files with 41 additions and 0 deletions
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11
ethclient/ethclient.go
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@ -456,6 +456,17 @@ func (ec *Client) CallContract(ctx context.Context, msg ethereum.CallMsg, blockN
return hex, nil
}
// CallContractAtHash is almost the same as CallContract except that it selects
// the block by block hash instead of block height.
func (ec *Client) CallContractAtHash(ctx context.Context, msg ethereum.CallMsg, blockHash common.Hash) ([]byte, error) {
var hex hexutil.Bytes
err := ec.c.CallContext(ctx, &hex, "eth_call", toCallArg(msg), rpc.BlockNumberOrHashWithHash(blockHash, false))
if err != nil {
return nil, err
}
return hex, nil
}
// PendingCallContract executes a message call transaction using the EVM.
// The state seen by the contract call is the pending state.
func (ec *Client) PendingCallContract(ctx context.Context, msg ethereum.CallMsg) ([]byte, error) {