Struct ckb_store::data_loader_wrapper::DataLoaderWrapper

pub struct DataLoaderWrapper<T>(/* private fields */);

DataLoaderWrapper wrapChainStore impl HeaderProvider CellDataProvider EpochProvider

Trait Implementations

impl<T> CellDataProvider for DataLoaderWrapper<T>where T: ChainStore,

fn get_cell_data(&self, out_point: &OutPoint) -> Option<Bytes>

Fetch cell_data from storage

fn get_cell_data_hash(&self, out_point: &OutPoint) -> Option<Byte32>

Fetch cell_data_hash from storage, please note that loading a large amount of cell data and calculating hash may be a performance bottleneck, so here is a separate fn designed to facilitate caching.

fn load_cell_data(&self, cell: &CellMeta) -> Option<Bytes>

Load cell_data from memory, fallback to storage access

fn load_cell_data_hash(&self, cell: &CellMeta) -> Option<Byte32>

Load cell_data_hash from memory, fallback to storage access

impl<T> Clone for DataLoaderWrapper<T>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T> EpochProvider for DataLoaderWrapper<T>where T: ChainStore,

fn get_epoch_ext(&self, header: &HeaderView) -> Option<EpochExt>

Get corresponding EpochExt by block header

fn get_block_hash(&self, number: BlockNumber) -> Option<Byte32>

Get block header hash by block number

fn get_block_ext(&self, block_hash: &Byte32) -> Option<BlockExt>

Get block ext by block header hash

fn get_block_header(&self, hash: &Byte32) -> Option<HeaderView>

Get header by block header hash

fn get_block_epoch(&self, header: &HeaderView) -> Option<BlockEpoch>

Get corresponding epoch progress information by block header

impl<T> HeaderProvider for DataLoaderWrapper<T>where T: ChainStore,

fn get_header(&self, block_hash: &Byte32) -> Option<HeaderView>

Get the header of the given block hash

fn timestamp_and_parent(&self, block_hash: &Byte32) -> (u64, u64, Byte32)

Get timestamp and block_number of the corresponding block_hash, and hash of parent block

fn block_median_time( &self, block_hash: &Byte32, median_block_count: usize ) -> u64

Get past block median time, including the timestamp of the given one