Struct fluvio_controlplane_metadata::store::LocalStore
source · [−]pub struct LocalStore<S, C> where
S: Spec,
C: MetadataItem, { /* private fields */ }
Expand description
Idempotent local memory cache of meta objects.
There are only 2 write operations are permitted: sync and apply changes which are idempotent.
For read, read guards are provided which provide hash map API using deref.
Hash values are wrapped in EpochCounter. EpochCounter is also deref.
Using async lock to ensure read/write are thread safe.
Implementations
sourceimpl<S, C> LocalStore<S, C> where
S: Spec,
C: MetadataItem,
impl<S, C> LocalStore<S, C> where
S: Spec,
C: MetadataItem,
sourcepub fn bulk_new<N>(objects: Vec<N, Global>) -> LocalStore<S, C> where
N: Into<MetadataStoreObject<S, C>>,
pub fn bulk_new<N>(objects: Vec<N, Global>) -> LocalStore<S, C> where
N: Into<MetadataStoreObject<S, C>>,
initialize local stores with list of metadata objects
create arc wrapper
sourcepub async fn read<'a>(
&self
) -> RwLockReadGuard<'_, DualEpochMap<<S as Spec>::IndexKey, MetadataStoreObject<S, C>>>
pub async fn read<'a>(
&self
) -> RwLockReadGuard<'_, DualEpochMap<<S as Spec>::IndexKey, MetadataStoreObject<S, C>>>
Read guard
sourcepub async fn write<'a>(
&self
) -> RwLockWriteGuard<'_, DualEpochMap<<S as Spec>::IndexKey, MetadataStoreObject<S, C>>>
pub async fn write<'a>(
&self
) -> RwLockWriteGuard<'_, DualEpochMap<<S as Spec>::IndexKey, MetadataStoreObject<S, C>>>
write guard, this is private, use sync API to make changes
sourcepub fn init_epoch(&self) -> DualEpochCounter<()>
pub fn init_epoch(&self) -> DualEpochCounter<()>
initial epoch that should be used store will always have epoch greater than init_epoch if there are any changes
sourcepub async fn value<K>(
&self,
key: &K
) -> Option<DualEpochCounter<MetadataStoreObject<S, C>>> where
K: Eq + Hash + ?Sized,
<S as Spec>::IndexKey: Borrow<K>,
pub async fn value<K>(
&self,
key: &K
) -> Option<DualEpochCounter<MetadataStoreObject<S, C>>> where
K: Eq + Hash + ?Sized,
<S as Spec>::IndexKey: Borrow<K>,
copy of the value
sourcepub async fn spec<K>(&self, key: &K) -> Option<S> where
K: Eq + Hash + ?Sized,
<S as Spec>::IndexKey: Borrow<K>,
pub async fn spec<K>(&self, key: &K) -> Option<S> where
K: Eq + Hash + ?Sized,
<S as Spec>::IndexKey: Borrow<K>,
copy spec
sourcepub async fn find_and_do<K, F>(&self, key: &K, func: F) -> Option<()> where
F: FnMut(&MetadataStoreObject<S, C>),
K: Eq + Hash,
<S as Spec>::IndexKey: Borrow<K>,
pub async fn find_and_do<K, F>(&self, key: &K, func: F) -> Option<()> where
F: FnMut(&MetadataStoreObject<S, C>),
K: Eq + Hash,
<S as Spec>::IndexKey: Borrow<K>,
iterate over entry
pub async fn contains_key<K>(&self, key: &K) -> bool where
K: Eq + Hash + ?Sized,
<S as Spec>::IndexKey: Borrow<K>,
pub async fn count(&self) -> i32
pub async fn clone_specs(&self) -> Vec<S, Global>
pub async fn clone_keys(&self) -> Vec<<S as Spec>::IndexKey, Global>
pub async fn clone_values(&self) -> Vec<MetadataStoreObject<S, C>, Global>
pub fn event_publisher(&self) -> &EventPublisher
sourcepub fn change_listener(self: &Arc<LocalStore<S, C>>) -> ChangeListener<S, C>
pub fn change_listener(self: &Arc<LocalStore<S, C>>) -> ChangeListener<S, C>
create new change listener
sourceimpl<S, C> LocalStore<S, C> where
S: Spec + PartialEq<S>,
C: MetadataItem + PartialEq<C>,
<S as Spec>::Status: PartialEq<<S as Spec>::Status>,
<S as Spec>::IndexKey: Display,
impl<S, C> LocalStore<S, C> where
S: Spec + PartialEq<S>,
C: MetadataItem + PartialEq<C>,
<S as Spec>::Status: PartialEq<<S as Spec>::Status>,
<S as Spec>::IndexKey: Display,
sourcepub async fn sync_all(
&self,
incoming_changes: Vec<MetadataStoreObject<S, C>, Global>
) -> SyncStatus
pub async fn sync_all(
&self,
incoming_changes: Vec<MetadataStoreObject<S, C>, Global>
) -> SyncStatus
sync with incoming changes as source of truth. any objects not in incoming list will be deleted after sync operation, prior history will be removed and any subsequent change query will return full list instead of changes
sourcepub async fn apply_changes(
&self,
changes: Vec<LSUpdate<S, C>, Global>
) -> Option<SyncStatus>
pub async fn apply_changes(
&self,
changes: Vec<LSUpdate<S, C>, Global>
) -> Option<SyncStatus>
apply changes to this store if item doesn’t exit, it will be treated as add if item exist but different, it will be treated as updated epoch will be only incremented if there are actual changes which means this is idempotent operations. same add result in only 1 single epoch increase.
Trait Implementations
sourceimpl<S, C> Debug for LocalStore<S, C> where
S: Debug + Spec,
C: Debug + MetadataItem,
<S as Spec>::IndexKey: Debug,
impl<S, C> Debug for LocalStore<S, C> where
S: Debug + Spec,
C: Debug + MetadataItem,
<S as Spec>::IndexKey: Debug,
sourceimpl<S, C> Default for LocalStore<S, C> where
S: Spec,
C: MetadataItem,
impl<S, C> Default for LocalStore<S, C> where
S: Spec,
C: MetadataItem,
sourcefn default() -> LocalStore<S, C>
fn default() -> LocalStore<S, C>
Returns the “default value” for a type. Read more
Auto Trait Implementations
impl<S, C> !RefUnwindSafe for LocalStore<S, C>
impl<S, C> Send for LocalStore<S, C> where
C: Send,
S: Send,
<S as Spec>::IndexKey: Send,
<S as Spec>::Status: Send,
impl<S, C> Sync for LocalStore<S, C> where
C: Send + Sync,
S: Send + Sync,
<S as Spec>::IndexKey: Send + Sync,
<S as Spec>::Status: Send + Sync,
impl<S, C> Unpin for LocalStore<S, C> where
C: Unpin,
S: Unpin,
<S as Spec>::IndexKey: Unpin,
<S as Spec>::Status: Unpin,
impl<S, C> UnwindSafe for LocalStore<S, C> where
C: UnwindSafe,
S: UnwindSafe,
<S as Spec>::IndexKey: UnwindSafe,
<S as Spec>::Status: UnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more