[−][src]Struct sc_state_db::StateDb
State DB maintenance. See module description. Can be shared across threads.
Methods
impl<BlockHash: Hash, Key: Hash> StateDb<BlockHash, Key>
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pub fn new<D: MetaDb>(
mode: PruningMode,
db: &D
) -> Result<StateDb<BlockHash, Key>, Error<D::Error>>
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mode: PruningMode,
db: &D
) -> Result<StateDb<BlockHash, Key>, Error<D::Error>>
Creates a new instance. Does not expect any metadata in the database.
pub fn insert_block<E: Debug>(
&self,
hash: &BlockHash,
number: u64,
parent_hash: &BlockHash,
changeset: ChangeSet<Key>
) -> Result<CommitSet<Key>, Error<E>>
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&self,
hash: &BlockHash,
number: u64,
parent_hash: &BlockHash,
changeset: ChangeSet<Key>
) -> Result<CommitSet<Key>, Error<E>>
Add a new non-canonical block.
pub fn canonicalize_block<E: Debug>(
&self,
hash: &BlockHash
) -> Result<CommitSet<Key>, Error<E>>
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&self,
hash: &BlockHash
) -> Result<CommitSet<Key>, Error<E>>
Finalize a previously inserted block.
pub fn pin(&self, hash: &BlockHash) -> Result<(), PinError>
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Prevents pruning of specified block and its descendants.
pub fn unpin(&self, hash: &BlockHash)
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Allows pruning of specified block.
pub fn get<D: NodeDb>(
&self,
key: &Key,
db: &D
) -> Result<Option<DBValue>, Error<D::Error>> where
Key: AsRef<D::Key>,
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&self,
key: &Key,
db: &D
) -> Result<Option<DBValue>, Error<D::Error>> where
Key: AsRef<D::Key>,
Get a value from non-canonical/pruning overlay or the backing DB.
pub fn revert_one(&self) -> Option<CommitSet<Key>>
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Revert all non-canonical blocks with the best block number.
Returns a database commit or None
if not possible.
For archive an empty commit set is returned.
pub fn best_canonical(&self) -> Option<u64>
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Returns last finalized block number.
pub fn is_pruned(&self, hash: &BlockHash, number: u64) -> bool
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Check if block is pruned away.
pub fn apply_pending(&self)
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Apply all pending changes
pub fn revert_pending(&self)
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Revert all pending changes
Auto Trait Implementations
impl<BlockHash, Key> !RefUnwindSafe for StateDb<BlockHash, Key>
impl<BlockHash, Key> Send for StateDb<BlockHash, Key>
impl<BlockHash, Key> Sync for StateDb<BlockHash, Key>
impl<BlockHash, Key> Unpin for StateDb<BlockHash, Key> where
BlockHash: Unpin,
Key: Unpin,
BlockHash: Unpin,
Key: Unpin,
impl<BlockHash, Key> UnwindSafe for StateDb<BlockHash, Key> where
BlockHash: UnwindSafe,
Key: UnwindSafe,
BlockHash: UnwindSafe,
Key: UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, Outer> IsWrappedBy<Outer> for T where
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,
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Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,
fn from_ref(outer: &Outer) -> &T
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Get a reference to the inner from the outer.
fn from_mut(outer: &mut Outer) -> &mut T
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Get a mutable reference to the inner from the outer.
impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<S, T> UncheckedInto<T> for S where
T: UncheckedFrom<S>,
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T: UncheckedFrom<S>,
fn unchecked_into(self) -> T
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,