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MetadataContext

oxide_update_engine

Struct MetadataContext 

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pub struct MetadataContext<S: EngineSpec> { /* private fields */ }
Expand description

Context for a step’s metadata-generation function.

This is passed into the function registered to generate a step’s metadata.

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MetadataContext deliberately does not implement Clone, to make it more likely that it is dropped at the same time the future completes.

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impl<S: EngineSpec> MetadataContext<S>

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pub fn token(&self) -> &StepHandleToken<S>

Retrieves a token used to fetch the value out of a StepHandle.

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impl<S: EngineSpec> Debug for MetadataContext<S>

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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<S> Freeze for MetadataContext<S>

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impl<S> RefUnwindSafe for MetadataContext<S>
where S: RefUnwindSafe,

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impl<S> Send for MetadataContext<S>

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impl<S> Sync for MetadataContext<S>
where S: Sync,

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impl<S> Unpin for MetadataContext<S>
where S: Unpin,

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impl<S> UnsafeUnpin for MetadataContext<S>

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impl<S> UnwindSafe for MetadataContext<S>
where S: UnwindSafe,

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

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fn borrow(&self) -> &T

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

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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

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fn from(t: T) -> T

Returns the argument unchanged.

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

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

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type Error = Infallible

The type returned in the event of a conversion error.
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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 T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> SendSyncUnwindSafe for T
where T: Send + Sync + UnwindSafe + ?Sized,