GetOrFetch

foyer_memory

Enum GetOrFetch 

Source 
pub enum GetOrFetch<K, V, S = DefaultHasher, P = CacheProperties>
where
    K: Key,
    V: Value,
    S: HashBuilder,
    P: Properties,
{
    Fifo(RawGetOrFetch<Fifo<K, V, P>, S, HashTableIndexer<Fifo<K, V, P>>>),
    S3Fifo(RawGetOrFetch<S3Fifo<K, V, P>, S, HashTableIndexer<S3Fifo<K, V, P>>>),
    Lru(RawGetOrFetch<Lru<K, V, P>, S, HashTableIndexer<Lru<K, V, P>>>),
    Lfu(RawGetOrFetch<Lfu<K, V, P>, S, HashTableIndexer<Lfu<K, V, P>>>),
    Sieve(RawGetOrFetch<Sieve<K, V, P>, S, HashTableIndexer<Sieve<K, V, P>>>),
}
Expand description

A future that is used to get entry value from the remote storage for the in-memory cache.

Variants§

§

Fifo(RawGetOrFetch<Fifo<K, V, P>, S, HashTableIndexer<Fifo<K, V, P>>>)

A future that is used to get entry value from the remote storage for the in-memory FIFO cache.

§

S3Fifo(RawGetOrFetch<S3Fifo<K, V, P>, S, HashTableIndexer<S3Fifo<K, V, P>>>)

A future that is used to get entry value from the remote storage for the in-memory S3FIFO cache.

§

Lru(RawGetOrFetch<Lru<K, V, P>, S, HashTableIndexer<Lru<K, V, P>>>)

A future that is used to get entry value from the remote storage for the in-memory LRU cache.

§

Lfu(RawGetOrFetch<Lfu<K, V, P>, S, HashTableIndexer<Lfu<K, V, P>>>)

A future that is used to get entry value from the remote storage for the in-memory LFU cache.

§

Sieve(RawGetOrFetch<Sieve<K, V, P>, S, HashTableIndexer<Sieve<K, V, P>>>)

A future that is used to get entry value from the remote storage for the in-memory sieve cache.

Implementations§

Source§

impl<K, V, S, P> GetOrFetch<K, V, S, P>
where K: Key + Clone, V: Value, S: HashBuilder, P: Properties,

Source

pub fn need_await(&self) -> bool

Check if the future need to be awaited or can be unwrap at once.

Source

pub fn try_unwrap(self) -> Result<CacheEntry<K, V, S, P>, Self>

Try to unwrap the future if it is already ready. Otherwise, return the original future.

Trait Implementations§

Source§

impl<K, V, S, P> Debug for GetOrFetch<K, V, S, P>
where K: Key, V: Value, S: HashBuilder, P: Properties,

Source§

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

Formats the value using the given formatter. Read more
Source§

impl<K, V, S, P> Future for GetOrFetch<K, V, S, P>
where K: Key + Clone, V: Value, S: HashBuilder, P: Properties,

Source§

type Output = Result<CacheEntry<K, V, S, P>, Error>

The type of value produced on completion.
Source§

fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>

Attempts to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more
Source§

impl<'pin, K, V, S, P> Unpin for GetOrFetch<K, V, S, P>
where K: Key, V: Value, S: HashBuilder, P: Properties, PinnedFieldsOf<__GetOrFetch<'pin, K, V, S, P>>: Unpin,

Auto Trait Implementations§

§

impl<K, V, S, P> Freeze for GetOrFetch<K, V, S, P>

§

impl<K, V, S = BuildHasherDefault<Hasher>, P = CacheProperties> !RefUnwindSafe for GetOrFetch<K, V, S, P>

§

impl<K, V, S, P> Send for GetOrFetch<K, V, S, P>

§

impl<K, V, S, P> Sync for GetOrFetch<K, V, S, P>

§

impl<K, V, S = BuildHasherDefault<Hasher>, P = CacheProperties> !UnwindSafe for GetOrFetch<K, V, S, P>

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T> FutureExt for T
where T: Future + ?Sized,

Source§

fn map<U, F>(self, f: F) -> Map<Self, F>
where F: FnOnce(Self::Output) -> U, Self: Sized,

Map this future’s output to a different type, returning a new future of the resulting type. Read more
Source§

fn map_into<U>(self) -> MapInto<Self, U>
where Self::Output: Into<U>, Self: Sized,

Map this future’s output to a different type, returning a new future of the resulting type. Read more
Source§

fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>
where F: FnOnce(Self::Output) -> Fut, Fut: Future, Self: Sized,

Chain on a computation for when a future finished, passing the result of the future to the provided closure f. Read more
Source§

fn left_future<B>(self) -> Either<Self, B>
where B: Future<Output = Self::Output>, Self: Sized,

Wrap this future in an Either future, making it the left-hand variant of that Either. Read more
Source§

fn right_future<A>(self) -> Either<A, Self>
where A: Future<Output = Self::Output>, Self: Sized,

Wrap this future in an Either future, making it the right-hand variant of that Either. Read more
Source§

fn into_stream(self) -> IntoStream<Self>
where Self: Sized,

Convert this future into a single element stream. Read more
Source§

fn flatten(self) -> Flatten<Self>
where Self::Output: Future, Self: Sized,

Flatten the execution of this future when the output of this future is itself another future. Read more
Source§

fn flatten_stream(self) -> FlattenStream<Self>
where Self::Output: Stream, Self: Sized,

Flatten the execution of this future when the successful result of this future is a stream. Read more
Source§

fn fuse(self) -> Fuse<Self>
where Self: Sized,

Fuse a future such that poll will never again be called once it has completed. This method can be used to turn any Future into a FusedFuture. Read more
Source§

fn inspect<F>(self, f: F) -> Inspect<Self, F>
where F: FnOnce(&Self::Output), Self: Sized,

Do something with the output of a future before passing it on. Read more
Source§

fn catch_unwind(self) -> CatchUnwind<Self>
where Self: Sized + UnwindSafe,

Catches unwinding panics while polling the future. Read more
Source§

fn shared(self) -> Shared<Self>
where Self: Sized, Self::Output: Clone,

Create a cloneable handle to this future where all handles will resolve to the same result. Read more
Source§

fn boxed<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a>>
where Self: Sized + Send + 'a,

Wrap the future in a Box, pinning it. Read more
Source§

fn boxed_local<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a>>
where Self: Sized + 'a,

Wrap the future in a Box, pinning it. Read more
Source§

fn unit_error(self) -> UnitError<Self>
where Self: Sized,

Turns a Future<Output = T> into a TryFuture<Ok = T, Error = ()>.
Source§

fn never_error(self) -> NeverError<Self>
where Self: Sized,

Turns a Future<Output = T> into a TryFuture<Ok = T, Error = Never>.
Source§

fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output>
where Self: Unpin,

A convenience for calling Future::poll on Unpin future types.
Source§

fn now_or_never(self) -> Option<Self::Output>
where Self: Sized,

Evaluates and consumes the future, returning the resulting output if the future is ready after the first call to Future::poll. Read more
Source§

impl<T> Instrument for T

Source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> IntoEither for T

Source§

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

impl<F> IntoFuture for F
where F: Future,

Source§

type Output = <F as Future>::Output

The output that the future will produce on completion.
Source§

type IntoFuture = F

Which kind of future are we turning this into?
Source§

fn into_future(self) -> <F as IntoFuture>::IntoFuture

Creates a future from a value. Read more
Source§

impl<T> Scope for T

Source§

fn with<F, R>(self, f: F) -> R
where Self: Sized, F: FnOnce(Self) -> R,

Scoped with ownership.
Source§

fn with_ref<F, R>(&self, f: F) -> R
where F: FnOnce(&Self) -> R,

Scoped with reference.
Source§

fn with_mut<F, R>(&mut self, f: F) -> R
where F: FnOnce(&mut Self) -> R,

Scoped with mutable reference.
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<F, T, E> TryFuture for F
where F: Future<Output = Result<T, E>> + ?Sized,

Source§

type Ok = T

The type of successful values yielded by this future
Source§

type Error = E

The type of failures yielded by this future
Source§

fn try_poll( self: Pin<&mut F>, cx: &mut Context<'_>, ) -> Poll<<F as Future>::Output>

Poll this TryFuture as if it were a Future. Read more
Source§

impl<Fut> TryFutureExt for Fut
where Fut: TryFuture + ?Sized,

Source§

fn map_ok<T, F>(self, f: F) -> MapOk<Self, F>
where F: FnOnce(Self::Ok) -> T, Self: Sized,

Maps this future’s success value to a different value. Read more
Source§

fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E>
where F: FnOnce(Self::Ok) -> T, E: FnOnce(Self::Error) -> T, Self: Sized,

Maps this future’s success value to a different value, and permits for error handling resulting in the same type. Read more
Source§

fn map_err<E, F>(self, f: F) -> MapErr<Self, F>
where F: FnOnce(Self::Error) -> E, Self: Sized,

Maps this future’s error value to a different value. Read more
Source§

fn err_into<E>(self) -> ErrInto<Self, E>
where Self: Sized, Self::Error: Into<E>,

Maps this future’s Error to a new error type using the Into trait. Read more
Source§

fn ok_into<U>(self) -> OkInto<Self, U>
where Self: Sized, Self::Ok: Into<U>,

Maps this future’s Ok to a new type using the Into trait.
Source§

fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>
where F: FnOnce(Self::Ok) -> Fut, Fut: TryFuture<Error = Self::Error>, Self: Sized,

Executes another future after this one resolves successfully. The success value is passed to a closure to create this subsequent future. Read more
Source§

fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F>
where F: FnOnce(Self::Error) -> Fut, Fut: TryFuture<Ok = Self::Ok>, Self: Sized,

Executes another future if this one resolves to an error. The error value is passed to a closure to create this subsequent future. Read more
Source§

fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F>
where F: FnOnce(&Self::Ok), Self: Sized,

Do something with the success value of a future before passing it on. Read more
Source§

fn inspect_err<F>(self, f: F) -> InspectErr<Self, F>
where F: FnOnce(&Self::Error), Self: Sized,

Do something with the error value of a future before passing it on. Read more
Source§

fn try_flatten(self) -> TryFlatten<Self, Self::Ok>
where Self::Ok: TryFuture<Error = Self::Error>, Self: Sized,

Flatten the execution of this future when the successful result of this future is another future. Read more
Source§

fn try_flatten_stream(self) -> TryFlattenStream<Self>
where Self::Ok: TryStream<Error = Self::Error>, Self: Sized,

Flatten the execution of this future when the successful result of this future is a stream. Read more
Source§

fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F>
where Self: Sized, F: FnOnce(Self::Error) -> Self::Ok,

Unwraps this future’s output, producing a future with this future’s Ok type as its Output type. Read more
Source§

fn into_future(self) -> IntoFuture<Self>
where Self: Sized,

Wraps a TryFuture into a type that implements Future. Read more
Source§

fn try_poll_unpin( &mut self, cx: &mut Context<'_>, ) -> Poll<Result<Self::Ok, Self::Error>>
where Self: Unpin,

A convenience method for calling TryFuture::try_poll on Unpin future types.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

Source§

fn vzip(self) -> V

Source§

impl<T> WithSubscriber for T

Source§

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
Source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

impl<T> Value for T
where T: Send + Sync + 'static,