pub struct AccountTreeWithHistory<S>where
S: AccountTreeStorage,{ /* private fields */ }Expand description
Wraps AccountTree with historical query support via reversion overlays.
This structure maintains a sliding window of historical account states by storing reversion data (mutations that undo changes). Historical witnesses are reconstructed by starting from the latest state and applying reversion overlays backwards in time.
Implementations§
Source§impl<S> AccountTreeWithHistory<S>where
S: AccountTreeStorage,
impl<S> AccountTreeWithHistory<S>where
S: AccountTreeStorage,
Sourcepub const MAX_HISTORY: usize = 33usize
pub const MAX_HISTORY: usize = 33usize
Maximum number of historical blocks to maintain.
Sourcepub fn new(account_tree: S, block_number: BlockNumber) -> Self
pub fn new(account_tree: S, block_number: BlockNumber) -> Self
Creates a new historical tree starting at the given block number.
Sourcepub fn block_number_latest(&self) -> BlockNumber
pub fn block_number_latest(&self) -> BlockNumber
Returns the latest block number.
Sourcepub fn root_latest(&self) -> Word
pub fn root_latest(&self) -> Word
Returns the root hash of the latest state.
Sourcepub fn root_at(&self, block_number: BlockNumber) -> Option<Word>
pub fn root_at(&self, block_number: BlockNumber) -> Option<Word>
Returns the root hash at a specific historical block.
Returns None if the block is in the future or too old (pruned).
Sourcepub fn num_accounts_latest(&self) -> usize
pub fn num_accounts_latest(&self) -> usize
Returns the number of accounts in the latest state.
Sourcepub fn history_len(&self) -> usize
pub fn history_len(&self) -> usize
Returns the number of historical blocks currently stored.
Sourcepub fn open_latest(&self, account_id: AccountId) -> AccountWitness
pub fn open_latest(&self, account_id: AccountId) -> AccountWitness
Opens an account at the latest block, returning its witness.
Sourcepub fn open_at(
&self,
account_id: AccountId,
block_number: BlockNumber,
) -> Option<AccountWitness>
pub fn open_at( &self, account_id: AccountId, block_number: BlockNumber, ) -> Option<AccountWitness>
Opens an account at a historical block, returning its witness.
This method reconstructs the account witness at the given historical block by:
- Starting with the latest account state
- Applying reversion mutations from the overlays to walk back in time
- Reconstructing the Merkle path with the historical node values
Returns None if the block is in the future or too old (pruned).
Sourcepub fn get_latest_commitment(&self, account_id: AccountId) -> Word
pub fn get_latest_commitment(&self, account_id: AccountId) -> Word
Gets the account state commitment at the latest block.
Sourcepub fn contains_account_id_prefix_in_latest(
&self,
prefix: AccountIdPrefix,
) -> bool
pub fn contains_account_id_prefix_in_latest( &self, prefix: AccountIdPrefix, ) -> bool
Checks if the tree contains an account with the given prefix.
Sourcepub fn compute_and_apply_mutations(
&mut self,
account_commitments: impl IntoIterator<Item = (AccountId, Word)>,
) -> Result<(), HistoricalError>
pub fn compute_and_apply_mutations( &mut self, account_commitments: impl IntoIterator<Item = (AccountId, Word)>, ) -> Result<(), HistoricalError>
Computes and applies mutations in one operation.
This is a convenience method primarily for testing.
Sourcepub fn compute_mutations(
&self,
account_commitments: impl IntoIterator<Item = (AccountId, Word)>,
) -> Result<AccountMutationSet, HistoricalError>
pub fn compute_mutations( &self, account_commitments: impl IntoIterator<Item = (AccountId, Word)>, ) -> Result<AccountMutationSet, HistoricalError>
Computes mutations relative to the latest state.
Sourcepub fn apply_mutations(
&mut self,
mutations: AccountMutationSet,
) -> Result<(), HistoricalError>
pub fn apply_mutations( &mut self, mutations: AccountMutationSet, ) -> Result<(), HistoricalError>
Applies mutations and advances to the next block.
This method:
- Applies the mutations to the latest tree, getting back reversion data
- Stores the reversion data as a historical overlay
- Advances the block number
- Prunes old overlays if exceeding
MAX_HISTORY
Trait Implementations§
Source§impl<S> Clone for AccountTreeWithHistory<S>where
S: AccountTreeStorage + Clone,
impl<S> Clone for AccountTreeWithHistory<S>where
S: AccountTreeStorage + Clone,
Source§fn clone(&self) -> AccountTreeWithHistory<S>
fn clone(&self) -> AccountTreeWithHistory<S>
Returns a duplicate of the value. Read more
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreAuto Trait Implementations§
impl<S> Freeze for AccountTreeWithHistory<S>where
S: Freeze,
impl<S> RefUnwindSafe for AccountTreeWithHistory<S>where
S: RefUnwindSafe,
impl<S> Send for AccountTreeWithHistory<S>where
S: Send,
impl<S> Sync for AccountTreeWithHistory<S>where
S: Sync,
impl<S> Unpin for AccountTreeWithHistory<S>where
S: Unpin,
impl<S> UnwindSafe for AccountTreeWithHistory<S>where
S: UnwindSafe,
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500 Internal Server responses. Read moreSource§impl<T> WindowExpressionMethods for T
impl<T> WindowExpressionMethods for T
Source§fn over(self) -> Self::Outputwhere
Self: OverDsl,
fn over(self) -> Self::Outputwhere
Self: OverDsl,
Turn a function call into a window function call Read more
Source§fn window_filter<P>(self, f: P) -> Self::Output
fn window_filter<P>(self, f: P) -> Self::Output
Add a filter to the current window function Read more
Source§fn partition_by<E>(self, expr: E) -> Self::Outputwhere
Self: PartitionByDsl<E>,
fn partition_by<E>(self, expr: E) -> Self::Outputwhere
Self: PartitionByDsl<E>,
Add a partition clause to the current window function Read more
Source§fn window_order<E>(self, expr: E) -> Self::Outputwhere
Self: OrderWindowDsl<E>,
fn window_order<E>(self, expr: E) -> Self::Outputwhere
Self: OrderWindowDsl<E>,
Add a order clause to the current window function Read more