Basic implementation of block-authoring logic.

Example

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

// From this factory, we create a Proposer. let proposer = proposerfactory.init( &client.header(client.chaininfo().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