Struct casper_execution_engine::storage::global_state::scratch::ScratchGlobalState

pub struct ScratchGlobalState { /* private fields */ }

Global state implemented against lmdb global state as a backing data store.

Implementations

impl ScratchGlobalState

pub fn new(state: LmdbGlobalState) -> Self

Creates a state from an existing environment, store, and root_hash. Intended to be used for testing.

pub fn into_inner(self) -> HashMap<Key, StoredValue>

Consume self and return inner cache.

Trait Implementations

impl CommitProvider for ScratchGlobalState

fn commit( &self, correlation_id: CorrelationId, state_hash: Digest, effects: AdditiveMap<Key, Transform> ) -> Result<Digest, Self::Error>

State hash returned is the one provided, as we do not write to lmdb with this kind of global state. Note that the state hash is NOT used, and simply passed back to the caller.

impl StateProvider for ScratchGlobalState

fn missing_trie_keys( &self, correlation_id: CorrelationId, trie_keys: Vec<Digest> ) -> Result<Vec<Digest>, Self::Error>

Finds all of the keys of missing descendant Trie<K,V> values

type Error = Error

Associated error type for StateProvider.

type Reader = ScratchGlobalStateView

Associated reader type for StateProvider.

fn checkout( &self, state_hash: Digest ) -> Result<Option<Self::Reader>, Self::Error>

Checkouts to the post state of a specific block.

fn empty_root(&self) -> Digest

Returns an empty root hash.

fn get_trie( &self, correlation_id: CorrelationId, trie_key: &Digest ) -> Result<Option<Trie<Key, StoredValue>>, Self::Error>

Reads a Trie from the state if it is present

fn put_trie( &self, correlation_id: CorrelationId, trie: &Trie<Key, StoredValue> ) -> Result<Digest, Self::Error>

Insert a trie node into the trie

fn delete_keys( &self, correlation_id: CorrelationId, root: Digest, keys_to_delete: &[Key] ) -> Result<DeleteResult, Self::Error>

Delete key from the global state.