/// Decodes registry deltas from their hash tree representation.
Decodes registry deltas from their hash tree representation.
Decodes registry deltas from their hash tree representation .
pub fn decode_hash_tree(
    since_version: u64,
    hash_tree: MixedHashTree,
) -> Result<(Vec<RegistryTransportRecord>, RegistryVersion), CertificationError> {
    // Extract structured deltas from their tree representation.
    let labeled_tree = LabeledTree::<Vec<u8>>::try_from(hash_tree).map_err(|err| {
        CertificationError::MalformedHashTree(format!(
            "failed to convert hash tree to labeled tree: {:?}",
            err
        ))
    })?;
    let certified_payload = CertifiedPayload::deserialize(LabeledTreeDeserializer::new(
        &labeled_tree,
    ))
    .map_err(|err| {
        CertificationError::DeserError(format!(
            "failed to unpack certified payload from the labeled tree: {}",
            err
        ))
    })?;
    // Validate that the deltas form a proper range and convert them to the
    // format that RegistryClient wants.
    let current_version = validate_version_range(since_version, &certified_payload)?;
    let changes = certified_payload
        .delta
        .into_iter()
        .flat_map(|(v, mutate_req)| {
            mutate_req.0.mutations.into_iter().map(move |m| {
                let value = if m.mutation_type == Type::Delete as i32 {
                    None
                } else {
                    Some(m.value)
                };
                RegistryTransportRecord {
                    key: String::from_utf8_lossy(&m.key[..]).to_string(),
                    value,
                    version: RegistryVersion::from(v),
                }
            })
        })
        .collect();
    Ok((changes, RegistryVersion::from(current_version)))
}
pub fn decode_hash_tree ( since_version : u64 , hash_tree : MixedHashTree , ) -> Result < ( Vec < RegistryTransportRecord > , RegistryVersion ) , CertificationError > { // Extract structured deltas from their tree representation. let labeled_tree = LabeledTree :: < Vec < u8 > > :: try_from ( hash_tree ) . map_err ( | err | { CertificationError :: MalformedHashTree ( format ! ( " " err ) ) } ) ? ; let certified_payload = CertifiedPayload :: deserialize ( LabeledTreeDeserializer :: new ( & labeled_tree , ) ) . map_err ( | err | { CertificationError :: DeserError ( format ! ( " " err ) ) } ) ? ; // Validate that the deltas form a proper range and convert them to the // format that RegistryClient wants. let current_version = validate_version_range ( since_version , & certified_payload ) ? ; let changes = certified_payload . delta . into_iter ( ) . flat_map ( | ( v , mutate_req ) | { mutate_req . 0 . mutations . into_iter ( ) . map ( move | m | { let value = if m . mutation_type == Type :: Delete as i32 { None } else { Some ( m . value ) } ; RegistryTransportRecord { key : String :: from_utf8_lossy ( & m . key [ .. ] ) . to_string ( ) , value , version : RegistryVersion :: from ( v ) , } } ) } ) . collect ( ) ; Ok ( ( changes , RegistryVersion :: from ( current_version ) ) ) }
Decodes registry deltas from their hash tree representation.
Decodes registry deltas from their hash tree representation .
since_version
u64
hash_tree
MixedHashTree