Trait sc_light::fetcher::BlockchainStorage[][src]

pub trait BlockchainStorage<Block>: AuxStore + HeaderBackend<Block> + HeaderMetadata<Block, Error = Error> + ProvideChtRoots<Block> where
    Block: Block
{ fn import_header(
        &self,
        header: <Block as Block>::Header,
        cache: HashMap<[u8; 4], Vec<u8, Global>, RandomState>,
        state: NewBlockState,
        aux_ops: Vec<(Vec<u8, Global>, Option<Vec<u8, Global>>), Global>
    ) -> Result<(), Error>;
fn set_head(&self, block: BlockId<Block>) -> Result<(), Error>;
fn finalize_header(&self, block: BlockId<Block>) -> Result<(), Error>;
fn last_finalized(&self) -> Result<<Block as Block>::Hash, Error>;
fn cache(&self) -> Option<Arc<dyn Cache<Block> + 'static>>;
fn usage_info(&self) -> Option<UsageInfo>; }
Expand description

Light client blockchain storage.

Required methods

Store new header. Should refuse to revert any finalized blocks.

Takes new authorities, the leaf state of the new block, and any auxiliary storage updates to place in the same operation.

Set an existing block as new best block.

Mark historic header as finalized.

Get last finalized header.

Get storage cache.

Get storage usage statistics.

Implementations on Foreign Types

Implementors