Trait sc_light::fetcher::BlockchainStorage

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>;
}

Light client blockchain storage.

Required methods

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>

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.

fn set_head(&self, block: BlockId<Block>) -> Result<(), Error>

Set an existing block as new best block.

fn finalize_header(&self, block: BlockId<Block>) -> Result<(), Error>

Mark historic header as finalized.

fn last_finalized(&self) -> Result<<Block as Block>::Hash, Error>

Get last finalized header.

fn cache(&self) -> Option<Arc<dyn Cache<Block> + 'static>>

Get storage cache.

fn usage_info(&self) -> Option<UsageInfo>

Get storage usage statistics.

Implementations on Foreign Types

impl<Block> Storage<Block> for Blockchain<Block> where
    Block: Block,
    <Block as Block>::Hash: From<[u8; 32]>, 

pub 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>

pub fn set_head(&self, id: BlockId<Block>) -> Result<(), Error>

pub fn last_finalized(&self) -> Result<<Block as Block>::Hash, Error>

pub fn finalize_header(&self, id: BlockId<Block>) -> Result<(), Error>

pub fn cache(&self) -> Option<Arc<dyn Cache<Block> + 'static>>

pub fn usage_info(&self) -> Option<UsageInfo>

Implementors