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::{fuel_node::ChainConfig, prelude::*, tx::ConsensusParameters};Next, we can define some values for the consensus parameters:
let consensus_parameters_config = ConsensusParameters::DEFAULT
.with_max_gas_per_tx(1000)
.with_gas_price_factor(10)
.with_max_inputs(2);
let chain_config = ChainConfig {
transaction_parameters: consensus_parameters_config,
..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 configs and returns a
provider attached to that node:
let node_config = Config::local_node();
let (_provider, _bound_address) =
setup_test_provider(coins, vec![], Some(node_config), Some(chain_config)).await;