Struct sp_state_machine::ProvingBackendRecorder

[+] Show declaration

pub struct ProvingBackendRecorder<'a, S: 'a + TrieBackendStorage<H>, H: 'a + Hasher> { /* fields omitted */ }

[−] Expand description

Patricia trie-based backend specialized in get value proofs.

Implementations

impl<'a, S, H> ProvingBackendRecorder<'a, S, H> where
    S: TrieBackendStorage<H>,
    H: Hasher,
    H::Out: Codec, [−]

pub fn storage(&mut self, key: &[u8]) -> Result<Option<Vec<u8>>, String>[−]

Produce proof for a key query.

pub fn child_storage(
    &mut self,
    child_info: &ChildInfo,
    key: &[u8]
) -> Result<Option<Vec<u8>>, String>[−]

Produce proof for a child key query.

pub fn record_all_keys(&mut self)[−]

Produce proof for the whole backend.