Trait sp_state_machine::ChangesTrieRootsStorage[][src]

pub trait ChangesTrieRootsStorage<H: Hasher, Number: BlockNumber>: Send + Sync {
    fn build_anchor(
        &self,
        hash: H::Out
    ) -> Result<AnchorBlockId<H::Out, Number>, String>;
fn root(
        &self,
        anchor: &AnchorBlockId<H::Out, Number>,
        block: Number
    ) -> Result<Option<H::Out>, String>; }
Expand description

Changes trie storage. Provides access to trie roots and trie nodes.

Required methods

Resolve hash of the block into anchor.

Get changes trie root for the block with given number which is an ancestor (or the block itself) of the anchor_block (i.e. anchor_block.number >= block).

Implementors