Struct node_testing::client::sc_client_db::light::LightStorage

pub struct LightStorage<Block> where
    Block: Block,  { /* fields omitted */ }

Light blockchain storage. Stores most recent headers + CHTs for older headers. Locks order: meta, cache.

Implementations

impl<Block> LightStorage<Block> where
    Block: Block, 

pub fn new(config: DatabaseSettings) -> Result<LightStorage<Block>, Error>

Create new storage with given settings.

pub fn new_test() -> LightStorage<Block>

Create new memory-backed LightStorage for tests.

Trait Implementations

impl<Block> AuxStore for LightStorage<Block> where
    Block: Block, 

pub fn insert_aux<'a, 'b, 'c, I, D>(
    &self,
    insert: I,
    delete: D
) -> Result<(), Error> where
    'b: 'a,
    'c: 'a,
    D: IntoIterator<Item = &'a &'b [u8]>,
    I: IntoIterator<Item = &'a (&'c [u8], &'c [u8])>, 

Insert auxiliary data into key-value store.

pub fn get_aux(&self, key: &[u8]) -> Result<Option<Vec<u8, Global>>, Error>

Query auxiliary data from key-value store.

impl<Block> HeaderBackend<Block> for LightStorage<Block> where
    Block: Block, 

pub fn header(
    &self,
    id: BlockId<Block>
) -> Result<Option<<Block as Block>::Header>, Error>

Get block header. Returns None if block is not found.

pub fn info(&self) -> Info<Block>

Get blockchain info.

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

Get block status.

pub fn number(
    &self,
    hash: <Block as Block>::Hash
) -> Result<Option<<<Block as Block>::Header as Header>::Number>, Error>

Get block number by hash. Returns None if the header is not in the chain.

pub fn hash(
    &self,
    number: <<Block as Block>::Header as Header>::Number
) -> Result<Option<<Block as Block>::Hash>, Error>

Get block hash by number. Returns None if the header is not in the chain.

fn block_hash_from_id(
    &self,
    id: &BlockId<Block>
) -> Result<Option<<Block as Block>::Hash>, Error>

Convert an arbitrary block ID into a block hash.

fn block_number_from_id(
    &self,
    id: &BlockId<Block>
) -> Result<Option<<<Block as Block>::Header as Header>::Number>, Error>

Convert an arbitrary block ID into a block hash.

fn expect_header(
    &self,
    id: BlockId<Block>
) -> Result<<Block as Block>::Header, Error>

Get block header. Returns UnknownBlock error if block is not found.

fn expect_block_number_from_id(
    &self,
    id: &BlockId<Block>
) -> Result<<<Block as Block>::Header as Header>::Number, Error>

Convert an arbitrary block ID into a block number. Returns UnknownBlock error if block is not found.

fn expect_block_hash_from_id(
    &self,
    id: &BlockId<Block>
) -> Result<<Block as Block>::Hash, Error>

Convert an arbitrary block ID into a block hash. Returns UnknownBlock error if block is not found.

impl<Block> HeaderMetadata<Block> for LightStorage<Block> where
    Block: Block, 

type Error = Error

Error used in case the header metadata is not found.

pub fn header_metadata(
    &self,
    hash: <Block as Block>::Hash
) -> Result<CachedHeaderMetadata<Block>, <LightStorage<Block> as HeaderMetadata<Block>>::Error>

pub fn insert_header_metadata(
    &self,
    hash: <Block as Block>::Hash,
    metadata: CachedHeaderMetadata<Block>
)

pub fn remove_header_metadata(&self, hash: <Block as Block>::Hash)

impl<Block> ProvideChtRoots<Block> for LightStorage<Block> where
    Block: Block, 

pub fn header_cht_root(
    &self,
    cht_size: <<Block as Block>::Header as Header>::Number,
    block: <<Block as Block>::Header as Header>::Number
) -> Result<Option<<Block as Block>::Hash>, Error>

Get headers CHT root for given block. Returns None if the block is not a part of any CHT.

pub fn changes_trie_cht_root(
    &self,
    cht_size: <<Block as Block>::Header as Header>::Number,
    block: <<Block as Block>::Header as Header>::Number
) -> Result<Option<<Block as Block>::Hash>, Error>

Get changes trie CHT root for given block. Returns None if the block is not a part of any CHT.

impl<Block> Storage<Block> for LightStorage<Block> where
    Block: Block, 

pub fn import_header(
    &self,
    header: <Block as Block>::Header,
    cache_at: HashMap<[u8; 4], Vec<u8, Global>, RandomState>,
    leaf_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.

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

Set an existing block as new best block.

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

Mark historic header as finalized.

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

Get last finalized header.

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

Get storage cache.

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

Get storage usage statistics.