Struct sp_state_machine::InMemoryChangesTrieStorage

pub struct InMemoryChangesTrieStorage<H: Hasher, Number: BlockNumber> { /* fields omitted */ }

In-memory implementation of changes trie storage.

Implementations

impl<H: Hasher, Number: BlockNumber> InMemoryStorage<H, Number>

pub fn with_db(mdb: MemoryDB<H>) -> Self

Creates storage from given in-memory database.

pub fn new() -> Self

Creates storage with empty database.

pub fn with_proof(proof: Vec<Vec<u8>>) -> Self

Creates storage with given proof.

pub fn cache_mut(&mut self) -> &mut BuildCache<H::Out, Number>

Get mutable cache reference.

pub fn with_blocks(blocks: Vec<(Number, H::Out)>) -> Self

Create the storage with given blocks.

pub fn insert(
    &self,
    block: Number,
    changes_trie_root: H::Out,
    trie: MemoryDB<H>
)

Insert changes trie for given block.

Trait Implementations

impl<H: Hasher, Number: BlockNumber> RootsStorage<H, Number> for InMemoryStorage<H, Number>

fn build_anchor(
    &self,
    parent_hash: H::Out
) -> Result<AnchorBlockId<H::Out, Number>, String>

Resolve hash of the block into anchor.

fn root(
    &self,
    _anchor_block: &AnchorBlockId<H::Out, Number>,
    block: Number
) -> Result<Option<H::Out>, String>

Get changes trie root for the block with given number which is an ancestor (or the block itself) of the anchor_block (i.e. anchor_block.number >= block).

impl<H: Hasher, Number: BlockNumber> Storage<H, Number> for InMemoryStorage<H, Number>

fn as_roots_storage(&self) -> &dyn RootsStorage<H, Number>

Casts from self reference to RootsStorage reference.

fn with_cached_changed_keys(
    &self,
    root: &H::Out,
    functor: &mut dyn FnMut(&HashMap<Option<PrefixedStorageKey>, HashSet<StorageKey>>)
) -> bool

Execute given functor with cached entry for given trie root. Returns true if the functor has been called (cache entry exists) and false otherwise.

fn get(&self, key: &H::Out, prefix: Prefix) -> Result<Option<DBValue>, String>

Get a trie node.