Struct casper_execution_engine::storage::global_state::in_memory::InMemoryGlobalState

pub struct InMemoryGlobalState { /* private fields */ }

Global state implemented purely in memory only. No state is saved to disk. This is mostly used for testing purposes.

Implementations

impl InMemoryGlobalState

pub fn empty() -> Result<Self, Error>

Creates an empty state.

pub fn from_pairs( correlation_id: CorrelationId, pairs: &[(Key, StoredValue)] ) -> Result<(Self, Digest), Error>

Creates a state from a given set of Key, StoredValue pairs.

pub fn empty_root_hash(&self) -> Digest

Returns the empty root hash owned by this InMemoryGlobalState.

Trait Implementations

impl CommitProvider for InMemoryGlobalState

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

Applies changes and returns a new post state hash. block_hash is used for computing a deterministic and unique keys.

impl StateProvider for InMemoryGlobalState

fn missing_children( &self, correlation_id: CorrelationId, trie_raw: &[u8] ) -> Result<Vec<Digest>, Self::Error>

Finds all of the keys of missing directly descendant Trie<Key,StoredValue> values.

type Error = Error

Associated error type for StateProvider.

type Reader = InMemoryGlobalStateView

Associated reader type for StateProvider.

fn checkout( &self, prestate_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_full( &self, _correlation_id: CorrelationId, trie_key: &Digest ) -> Result<Option<TrieRaw>, Self::Error>

Reads a full Trie (never chunked) from the state if it is present

fn put_trie( &self, correlation_id: CorrelationId, trie: &[u8] ) -> 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.