pub enum WriteStorage {
    Public(WriteMtime, SystemTime),
    Current(WriteMtime),
    Meta,
}

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Public(WriteMtime, SystemTime)

The copy of data which is maintained to be equal to the others’ public storages.

See WriteFn and Options::write for more details on the data.

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Current(WriteMtime)

The copy of data the user writes to.

The WriteMtime signals if we should update the mtime.

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Meta

Storage of metadata objects.

Implementations§

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impl WriteStorage

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pub fn current() -> Self

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pub fn current_without_update() -> Self

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pub fn to_storage(&self) -> Storage

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impl WriteStorage

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pub async fn update_metadata<MtimeFuture: Future<Output = Option<SystemTime>>>( &self, metadata: &Mutex<Metadata>, offline_metadata: &Mutex<Metadata>, resource: String, data_len: usize, mtime: impl FnOnce(Storage, String) -> MtimeFuture ) -> Result<(), ()>

Update the metadata and offline_metadata according to what storage you’re writing to.

Errors

Returns an error if self is WriteStorage::Current with WriteMtime::LookUpCurrent and mtime returns None (the resource doesn’t exist).

Trait Implementations§

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impl Clone for WriteStorage

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fn clone(&self) -> WriteStorage

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for WriteStorage

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

Formats the value using the given formatter. Read more
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impl PartialEq<WriteStorage> for WriteStorage

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fn eq(&self, other: &WriteStorage) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for WriteStorage

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impl Eq for WriteStorage

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impl StructuralEq for WriteStorage

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impl StructuralPartialEq for WriteStorage

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere 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.

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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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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.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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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.
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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V