Basic implementation of block-authoring logic.

Example

// The first step is to create a `ProposerFactory`.
let mut proposer_factory = ProposerFactory::new(client.clone(), txpool.clone(), None);

// From this factory, we create a `Proposer`.
let proposer = proposer_factory.init(
	&client.header(client.chain_info().genesis_hash).unwrap().unwrap(),
);

// The proposer is created asynchronously.
let proposer = futures::executor::block_on(proposer).unwrap();

// This `Proposer` allows us to create a block proposition.
// The proposer will grab transactions from the transaction pool, and put them into the block.
let future = proposer.propose(
	Default::default(),
	Default::default(),
	Duration::from_secs(2),
);

// We wait until the proposition is performed.
let block = futures::executor::block_on(future).unwrap();
println!("Generated block: {:?}", block.block);

License: GPL-3.0-or-later WITH Classpath-exception-2.0

lib.rs:

Basic implementation of block-authoring logic.

Example

# use sc_basic_authorship::ProposerFactory;
# use sp_consensus::{Environment, Proposer};
# use sp_runtime::generic::BlockId;
# use std::{sync::Arc, time::Duration};
# use substrate_test_runtime_client::{
#     runtime::{Extrinsic, Transfer}, AccountKeyring,
#     DefaultTestClientBuilderExt, TestClientBuilderExt,
# };
# use sc_transaction_pool::{BasicPool, FullChainApi};
# let client = Arc::new(substrate_test_runtime_client::new());
# let spawner = sp_core::testing::TaskExecutor::new();
# let txpool = BasicPool::new_full(
#     Default::default(),
#     true.into(),
#     None,
#     spawner.clone(),
#     client.clone(),
# );
// The first step is to create a `ProposerFactory`.
let mut proposer_factory = ProposerFactory::new(
		spawner,
		client.clone(),
		txpool.clone(),
		None,
		None,
	);

// From this factory, we create a `Proposer`.
let proposer = proposer_factory.init(
	&client.header(client.chain_info().genesis_hash).unwrap().unwrap(),
);

// The proposer is created asynchronously.
let proposer = futures::executor::block_on(proposer).unwrap();

// This `Proposer` allows us to create a block proposition.
// The proposer will grab transactions from the transaction pool, and put them into the block.
let future = proposer.propose(
	Default::default(),
	Default::default(),
	Duration::from_secs(2),
	None,
);

// We wait until the proposition is performed.
let block = futures::executor::block_on(future).unwrap();
println!("Generated block: {:?}", block.block);