Trait cumulus_pallet_parachain_system::CheckAssociatedRelayNumber

source · 
pub trait CheckAssociatedRelayNumber {
    fn check_associated_relay_number(
        current: RelayChainBlockNumber,
        previous: RelayChainBlockNumber
    );
}
Expand description

Something that can check the associated relay block number.

Each Parachain block is built in the context of a relay chain block, this trait allows us to validate the given relay chain block number. With async backing it is legal to build multiple Parachain blocks per relay chain parent. With this trait it is possible for the Parachain to ensure that still only one Parachain block is build per relay chain parent.

By default RelayNumberStrictlyIncreases and AnyRelayNumber are provided.

Required Methods§

Check the current relay number versus the previous relay number.

The implementation should panic when there is something wrong.

Implementors§