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ethclient: add EstimateGasAt[Hash] functions #27508 (#1396)

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Daniel Liu 2025-08-28 19:00:44 +08:00 committed by GitHub
parent 8679a9fc4f
commit db50cdd311
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1 changed files with 29 additions and 3 deletions
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32
ethclient/ethclient.go
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@ -646,9 +646,13 @@ func (ec *Client) FeeHistory(ctx context.Context, blockCount uint64, lastBlock *
} }
// EstimateGas tries to estimate the gas needed to execute a specific transaction based on // EstimateGas tries to estimate the gas needed to execute a specific transaction based on
// the current pending state of the backend blockchain. There is no guarantee that this is // the current state of the backend blockchain. There is no guarantee that this is the
// the true gas limit requirement as other transactions may be added or removed by miners, // true gas limit requirement as other transactions may be added or removed by miners, but
// but it should provide a basis for setting a reasonable default. // it should provide a basis for setting a reasonable default.
//
// Note that the state used by this method is implementation-defined by the remote RPC
// server, but it's reasonable to assume that it will either be the pending or latest
// state.
func (ec *Client) EstimateGas(ctx context.Context, msg ethereum.CallMsg) (uint64, error) { func (ec *Client) EstimateGas(ctx context.Context, msg ethereum.CallMsg) (uint64, error) {
var hex hexutil.Uint64 var hex hexutil.Uint64
err := ec.c.CallContext(ctx, &hex, "eth_estimateGas", toCallArg(msg)) err := ec.c.CallContext(ctx, &hex, "eth_estimateGas", toCallArg(msg))
@ -658,6 +662,28 @@ func (ec *Client) EstimateGas(ctx context.Context, msg ethereum.CallMsg) (uint64
return uint64(hex), nil return uint64(hex), nil
} }
// EstimateGasAtBlock is almost the same as EstimateGas except that it selects the block height
// instead of using the remote RPC's default state for gas estimation.
func (ec *Client) EstimateGasAtBlock(ctx context.Context, msg ethereum.CallMsg, blockNumber *big.Int) (uint64, error) {
var hex hexutil.Uint64
err := ec.c.CallContext(ctx, &hex, "eth_estimateGas", toCallArg(msg), toBlockNumArg(blockNumber))
if err != nil {
return 0, err
}
return uint64(hex), nil
}
// EstimateGasAtBlockHash is almost the same as EstimateGas except that it selects the block
// hash instead of using the remote RPC's default state for gas estimation.
func (ec *Client) EstimateGasAtBlockHash(ctx context.Context, msg ethereum.CallMsg, blockHash common.Hash) (uint64, error) {
var hex hexutil.Uint64
err := ec.c.CallContext(ctx, &hex, "eth_estimateGas", toCallArg(msg), rpc.BlockNumberOrHashWithHash(blockHash, false))
if err != nil {
return 0, err
}
return uint64(hex), nil
}
// SendTransaction injects a signed transaction into the pending pool for execution. // SendTransaction injects a signed transaction into the pending pool for execution.
// //
// If the transaction was a contract creation use the TransactionReceipt method to get the // If the transaction was a contract creation use the TransactionReceipt method to get the