[−][src]Trait sc_client_api::backend::PrunableStateChangesTrieStorage

pub trait PrunableStateChangesTrieStorage<Block: BlockT>: StateChangesTrieStorage<HashFor<Block>, NumberFor<Block>> {
    fn storage(
        &self
    ) -> &dyn StateChangesTrieStorage<HashFor<Block>, NumberFor<Block>>;
    fn configuration_at(
        &self, 
        at: &BlockId<Block>
    ) -> Result<ChangesTrieConfigurationRange<NumberFor<Block>, Block::Hash>>;
    fn oldest_pruned_digest_range_end(&self) -> NumberFor<Block>;
}

Changes trie storage that supports pruning.

Required methods

`fn storage( &self ) -> &dyn StateChangesTrieStorage<HashFor<Block>, NumberFor<Block>>`

Get reference to StateChangesTrieStorage.

`fn configuration_at( &self, at: &BlockId<Block> ) -> Result<ChangesTrieConfigurationRange<NumberFor<Block>, Block::Hash>>`

Get configuration at given block.

`fn oldest_pruned_digest_range_end(&self) -> NumberFor<Block>`

Get end block (inclusive) of oldest pruned max-level (or skewed) digest trie blocks range. It is guaranteed that we have no any changes tries before (and including) this block. It is guaranteed that all existing changes tries after this block are not yet pruned (if created).

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Implementors