This example demonstrates how to start a short-lived Fuel node with custom consensus parameters for the underlying chain.
First, we have to import ConsensusParameters and ChainConfig:
use fuels::{
prelude::*,
tx::{ConsensusParameters, FeeParameters, TxParameters},
};Next, we can define some values for the consensus parameters:
let tx_params = TxParameters::default()
.with_max_gas_per_tx(1_000)
.with_max_inputs(2);
let fee_params = FeeParameters::default().with_gas_price_factor(10);
let mut consensus_parameters = ConsensusParameters::default();
consensus_parameters.set_tx_params(tx_params);
consensus_parameters.set_fee_params(fee_params);
let chain_config = ChainConfig {
consensus_parameters,
..ChainConfig::default()
};Before we can start a node, we probably also want to define some genesis coins and assign them to an address:
let wallet = WalletUnlocked::new_random(None);
let coins = setup_single_asset_coins(
wallet.address(),
Default::default(),
DEFAULT_NUM_COINS,
DEFAULT_COIN_AMOUNT,
); Finally, we call setup_test_provider(), which starts a node with the given configurations and returns a
provider attached to that node:
let node_config = NodeConfig::default();
let _provider =
setup_test_provider(coins, vec![], Some(node_config), Some(chain_config)).await?;