Struct casper_execution_engine::storage::trie_store::lmdb::LmdbTrieStore

pub struct LmdbTrieStore { /* private fields */ }

An LMDB-backed trie store.

Wraps lmdb::Database.

Implementations

impl LmdbTrieStore

pub fn new( env: &LmdbEnvironment, maybe_name: Option<&str>, flags: DatabaseFlags ) -> Result<Self, Error>

Constructor for new LmdbTrieStore.

pub fn open( env: &LmdbEnvironment, maybe_name: Option<&str> ) -> Result<Self, Error>

Constructor for LmdbTrieStore which opens an existing lmdb store file.

pub fn get_db(&self) -> Database

Get a handle to the underlying database.

Trait Implementations

impl Clone for LmdbTrieStore

fn clone(&self) -> LmdbTrieStore

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LmdbTrieStore

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<K, V> Store<Digest, Trie<K, V>> for LmdbTrieStore

type Error = Error

Errors possible from this store.

type Handle = Database

Underlying store type.

fn handle(&self) -> Self::Handle

handle returns the underlying store.

fn get_raw<T>(&self, txn: &T, key: &K) -> Result<Option<Bytes>, Self::Error>

where T: Readable<Handle = Self::Handle>, K: AsRef<[u8]>, Self::Error: From<T::Error>,

Returns an optional value (may exist or not) as read through a transaction, or an error of the associated Self::Error variety.

fn put_raw<T>( &self, txn: &mut T, key: &K, value_bytes: Cow<'_, [u8]> ) -> Result<(), Self::Error>

where T: Writable<Handle = Self::Handle>, K: AsRef<[u8]>, Self::Error: From<T::Error>,

Puts a raw value into the store at key within a transaction, potentially returning an error of type Self::Error if that fails.

impl<K, V> TrieStore<K, V> for LmdbTrieStore