Trait sov_modules_api::SlotData

pub trait SlotData: Serialize + DeserializeOwned + PartialEq<Self> + Debug + Clone + Send + Sync {
    type BlockHeader: BlockHeaderTrait;
    type Cond: ValidityCondition;

    // Required methods
    fn hash(&self) -> [u8; 32];
    fn header(&self) -> &Self::BlockHeader;
    fn validity_condition(&self) -> Self::Cond;
}

SlotData is the subset of a DA layer block which is stored in the rollup’s database. At the very least, the rollup needs access to the hashes and headers of all DA layer blocks, but rollups may choose to partial (or full) block data as well.

Required Associated Types

type BlockHeader: BlockHeaderTrait

The header type for a DA layer block as viewed by the rollup. This need not be identical to the underlying rollup’s header type, but it must be sufficient to reconstruct the block hash.

For example, most fields of the a Tendermint-based DA chain like Celestia are irrelevant to the rollup. For these fields, we only ever store their serialized representation in memory or on disk. Only a few special fields like data_root are stored in decoded form in the CelestiaHeader struct.

type Cond: ValidityCondition

The validity condition associated with the slot data.

Required Methods

fn hash(&self) -> [u8; 32]

The canonical hash of the DA layer block.

fn header(&self) -> &Self::BlockHeader

The header of the DA layer block.

fn validity_condition(&self) -> Self::Cond

Get the validity condition set associated with the slot

Implementors