builder

type Builder interface {
	mempool.Mempool

	// StartBlockTimer starts to issue block creation requests to advance the
	// chain timestamp.
	StartBlockTimer()

	// ResetBlockTimer forces the block timer to recalculate when it should
	// advance the chain timestamp.
	ResetBlockTimer()

	// ShutdownBlockTimer stops block creation requests to advance the chain
	// timestamp.
	//
	// Invariant: Assumes the context lock is held when calling.
	ShutdownBlockTimer()

	// BuildBlock can be called to attempt to create a new block
	BuildBlock(context.Context) (chain.Block, error)

	// PackBlockTxs returns an array of txs that can fit into a valid block of
	// size [targetBlockSize]. The returned txs are all verified against the
	// preferred state.
	//
	// Note: This function does not call the consensus engine.
	PackBlockTxs(targetBlockSize int) ([]*txs.Tx, error)
}