Struct merino_integration_tests::utils::redis::AVAILABLE_DATABASES

source · [−]

struct AVAILABLE_DATABASES {
    __private_field: (),
}

Fields

__private_field: ()

Methods from Deref<Target = OnceCell<Pool<i64>>>

pub fn initialized(&self) -> bool

Returns true if the OnceCell currently contains a value, and false otherwise.

pub fn get(&self) -> Option<&T>

Returns a reference to the value currently stored in the OnceCell, or None if the OnceCell is empty.

pub fn set(&self, value: T) -> Result<(), SetError<T>>

Sets the value of the OnceCell to the given value if the OnceCell is empty.

If the OnceCell already has a value, this call will fail with an SetError::AlreadyInitializedError.

If the OnceCell is empty, but some other task is currently trying to set the value, this call will fail with SetError::InitializingError.

pub async fn get_or_init<F, Fut>(&self, f: F) -> &T where
F: FnOnce() -> Fut,
Fut: Future<Output = T>,

Gets the value currently in the OnceCell, or initialize it with the given asynchronous operation.

If some other task is currently working on initializing the OnceCell, this call will wait for that other task to finish, then return the value that the other task produced.

If the provided operation is cancelled or panics, the initialization attempt is cancelled. If there are other tasks waiting for the value to be initialized, one of them will start another attempt at initializing the value.

This will deadlock if f tries to initialize the cell recursively.

pub async fn get_or_try_init<E, F, Fut>(&self, f: F) -> Result<&T, E> where
F: FnOnce() -> Fut,
Fut: Future<Output = Result<T, E>>,

Gets the value currently in the OnceCell, or initialize it with the given asynchronous operation.

If some other task is currently working on initializing the OnceCell, this call will wait for that other task to finish, then return the value that the other task produced.

If the provided operation returns an error, is cancelled or panics, the initialization attempt is cancelled. If there are other tasks waiting for the value to be initialized, one of them will start another attempt at initializing the value.

This will deadlock if f tries to initialize the cell recursively.

Trait Implementations

impl Deref for AVAILABLE_DATABASES

type Target = OnceCell<Pool<i64>>

The resulting type after dereferencing.

fn deref(&self) -> &OnceCell<Pool<i64>>

Dereferences the value.

impl LazyStatic for AVAILABLE_DATABASES

Auto Trait Implementations

impl RefUnwindSafe for AVAILABLE_DATABASES

impl Send for AVAILABLE_DATABASES

impl Sync for AVAILABLE_DATABASES

impl Unpin for AVAILABLE_DATABASES

impl UnwindSafe for AVAILABLE_DATABASES

Blanket Implementations

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<'a, T, E> AsTaggedExplicit<'a, E> for T where
T: 'a,

fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self, E>

impl<'a, T, E> AsTaggedImplicit<'a, E> for T where
T: 'a,

fn implicit(
    self,
    class: Class,
    constructed: bool,
    tag: u32
) -> TaggedParser<'a, Implicit, Self, E>

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

impl<T> Fake for T

fn fake<U>(&self) -> U where
Self: FakeBase<U>,

fn fake_with_rng<U, R>(&self, rng: &mut R) -> U where
R: Rng + ?Sized,
Self: FakeBase<U>,

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Instrument for T

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

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

fn in_current_span(self) -> Instrumented<Self>

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

impl<T> Instrument for T

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

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

fn in_current_span(self) -> Instrumented<Self>

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

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

const: unstable · 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.

impl<T> Same<T> for T

type Output = T

Should always be Self

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

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

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

fn vzip(self) -> V

impl<T> WithSubscriber for T

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

fn with_current_subscriber(self) -> WithDispatch<Self>

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

impl<T> WithSubscriber for T

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

fn with_current_subscriber(self) -> WithDispatch<Self>

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

impl<'_, T> Captures<'_> for T where
T: ?Sized,

impl<T, > MentionsTy<> for T where
T: ?Sized,
__: ?Sized,