Struct oasis_runtime_sdk::storage::HostStore

pub struct HostStore { /* private fields */ }

A store for a specific state root that talks to the runtime host.

Implementations

impl HostStore

pub fn new(host: Arc<Protocol>, root: Root) -> Self

Create a new host store for the given host and root.

pub async fn new_for_round( host: Arc<Protocol>, consensus_verifier: &Arc<dyn Verifier>, id: Namespace, round: u64, ) -> Result<Self>

Create a new host store for the given host and root at the given round.

The corresponding root hash is fetched by looking it up in consensus layer state, verified by the passed verifier to be correct.

Trait Implementations

impl Store for HostStore

fn get(&self, key: &[u8]) -> Option<Vec<u8>>

Fetch entry with given key.

fn insert(&mut self, key: &[u8], value: &[u8])

Update entry with given key to the given value.

fn remove(&mut self, key: &[u8])

Remove entry with given key.

fn iter(&self) -> Box<dyn Iterator + '_>

Returns an iterator over the tree.

fn prefetch_prefixes(&mut self, prefixes: Vec<Prefix>, limit: u16)

Populate the in-memory tree with nodes for keys starting with given prefixes.