pub struct OpLog { /* private fields */ }Expand description
OpLog store all the ops i.e. the history. It allows multiple [AppState] to attach to it. So you can derive different versions of the state from the OpLog. It allows us to build a version control system.
The causal graph should always be a DAG and complete. So we can always find the LCA.
If deps are missing, we can’t import the change. It will be put into the pending_changes.
Implementations§
Source§impl OpLog
impl OpLog
pub fn dag(&self) -> &AppDag
pub fn change_store(&self) -> &ChangeStore
Sourcepub fn get_change_with_lamport_lte(
&self,
peer: PeerID,
lamport: Lamport,
) -> Option<BlockChangeRef>
pub fn get_change_with_lamport_lte( &self, peer: PeerID, lamport: Lamport, ) -> Option<BlockChangeRef>
Get the change with the given peer and lamport.
If not found, return the change with the greatest lamport that is smaller than the given lamport.
pub fn get_timestamp_of_version(&self, f: &Frontiers) -> Timestamp
pub fn is_empty(&self) -> bool
pub fn has_history_cache(&self) -> bool
pub fn free_history_cache(&self)
Sourcepub fn cmp_with_frontiers(&self, other: &Frontiers) -> Ordering
pub fn cmp_with_frontiers(&self, other: &Frontiers) -> Ordering
- Ordering::Less means self is less than target or parallel
- Ordering::Equal means versions equal
- Ordering::Greater means self’s version is greater than target
Sourcepub fn cmp_frontiers(
&self,
a: &Frontiers,
b: &Frontiers,
) -> Result<Option<Ordering>, FrontiersNotIncluded>
pub fn cmp_frontiers( &self, a: &Frontiers, b: &Frontiers, ) -> Result<Option<Ordering>, FrontiersNotIncluded>
Compare two Frontiers causally.
If one of the Frontiers are not included, it will return FrontiersNotIncluded.
pub fn get_change_at(&self, id: ID) -> Option<BlockChangeRef>
pub fn get_deps_of(&self, id: ID) -> Option<Frontiers>
pub fn get_remote_change_at(&self, id: ID) -> Option<Change<RemoteOp<'static>>>
pub fn len_changes(&self) -> usize
pub fn diagnose_size(&self) -> SizeInfo
pub fn get_timestamp_for_next_txn(&self) -> Timestamp
pub fn compact_change_store(&mut self)
pub fn change_store_kv_size(&self) -> usize
pub fn encode_change_store(&self) -> Bytes
pub fn check_dag_correctness(&self)
pub fn shallow_since_vv(&self) -> &ImVersionVector
pub fn shallow_since_frontiers(&self) -> &Frontiers
pub fn is_shallow(&self) -> bool
pub fn get_greatest_timestamp(&self, frontiers: &Frontiers) -> Timestamp
Trait Implementations§
Auto Trait Implementations§
impl !Freeze for OpLog
impl RefUnwindSafe for OpLog
impl Send for OpLog
impl Sync for OpLog
impl Unpin for OpLog
impl UnwindSafe for OpLog
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