Struct SledDbOverlayState 

pub struct SledDbOverlayState {
    pub initial_tree_names: Vec<IVec>,
    pub new_tree_names: Vec<IVec>,
    pub caches: BTreeMap<IVec, SledTreeOverlay>,
    pub dropped_trees: BTreeMap<IVec, SledTreeOverlayStateDiff>,
    pub protected_tree_names: Vec<IVec>,
}

Struct representing SledDbOverlay cache state

Fields

initial_tree_names: Vec<IVec>

Existing trees in db at the time of instantiation, so we can track newly opened trees.

new_tree_names: Vec<IVec>

New trees that have been opened, but didn’t exist in db before.

caches: BTreeMap<IVec, SledTreeOverlay>

Pointers to SledTreeOverlay instances that have been created.

dropped_trees: BTreeMap<IVec, SledTreeOverlayStateDiff>

Trees that were dropped, along with their last state full diff.

protected_tree_names: Vec<IVec>

Protected trees, that we don’t allow their removal, and don’t drop their references if they become stale.

Implementations

impl SledDbOverlayState

pub fn new( initial_tree_names: Vec<IVec>, protected_tree_names: Vec<IVec>, ) -> Self

Instantiate a new SledDbOverlayState.

pub fn add_diff( &mut self, db: &Db, diff: &SledDbOverlayStateDiff, ) -> Result<(), Error>

Add provided db overlay state changes to our own.

pub fn remove_diff(&mut self, diff: &SledDbOverlayStateDiff)

Remove provided db overlay state changes from our own.

Trait Implementations

impl Clone for SledDbOverlayState

fn clone(&self) -> SledDbOverlayState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SledDbOverlayState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SledDbOverlayState

fn default() -> Self

Returns the “default value” for a type.