Official Go implementation of the Ethereum protocol
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go-ethereum/ethclient/simulated/options.go

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// Copyright 2024 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package simulated
import (
"math/big"
"github.com/ethereum/go-ethereum/eth/ethconfig"
"github.com/ethereum/go-ethereum/node"
)
// WithBlockGasLimit configures the simulated backend to target a specific gas limit
// when producing blocks.
func WithBlockGasLimit(gaslimit uint64) func(nodeConf *node.Config, ethConf *ethconfig.Config) {
return func(nodeConf *node.Config, ethConf *ethconfig.Config) {
ethConf.Genesis.GasLimit = gaslimit
ethConf.Miner.GasCeil = gaslimit
}
}
// WithCallGasLimit configures the simulated backend to cap eth_calls to a specific
// gas limit when running client operations.
func WithCallGasLimit(gaslimit uint64) func(nodeConf *node.Config, ethConf *ethconfig.Config) {
return func(nodeConf *node.Config, ethConf *ethconfig.Config) {
ethConf.RPCGasCap = gaslimit
}
}
// WithMinerMinTip configures the simulated backend to require a specific minimum
// gas tip for a transaction to be included.
//
// 0 is not possible as a live Geth node would reject that due to DoS protection,
// so the simulated backend will replicate that behavior for consistency.
func WithMinerMinTip(tip *big.Int) func(nodeConf *node.Config, ethConf *ethconfig.Config) {
if tip == nil || tip.Sign() <= 0 {
panic("invalid miner minimum tip")
}
return func(nodeConf *node.Config, ethConf *ethconfig.Config) {
ethConf.Miner.GasPrice = tip
}
}