Struct StorageEntryMetadata

pub struct StorageEntryMetadata {
    pub name: String,
    pub modifier: StorageEntryModifier,
    pub ty: StorageEntryType,
    pub default: Vec<u8>,
    pub docs: Docs,
}

Metadata for a single storage entry within a pallet.

Fields

name: String

The name of the storage entry.

modifier: StorageEntryModifier

The modifier indicating behavior when the entry doesn’t exist.

ty: StorageEntryType

The type information for this storage entry.

default: Vec<u8>

The default value for this entry as SCALE-encoded bytes.

docs: Docs

Documentation for this storage entry.

Implementations

impl StorageEntryMetadata

pub fn entry_prefix_hash(&self, pallet_prefix_hash: &[u8]) -> Vec<u8>

Computes the entry prefix hash, which is the pallet prefix hash ++ xxhash128 of the entry name.

Arguments

• pallet_prefix_hash - The hash of the pallet prefix

Returns

The complete entry prefix hash as a vector of bytes.

pub fn storage_key( &self, pallet_prefix_hash: &[u8], keys: &[Vec<u8>], ) -> Result<Vec<u8>>

Computes the full storage key for this entry, given its keys (if any).

Arguments

• pallet_prefix_hash - The hash of the pallet prefix
• keys - The keys for this storage entry, if it’s a map

Returns

The complete storage key as a vector of bytes, or an error if provided keys don’t match the storage entry type.

Trait Implementations

impl Clone for StorageEntryMetadata

fn clone(&self) -> StorageEntryMetadata

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.