Struct CodecVersionUpgrade

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pub struct CodecVersionUpgrade { /* private fields */ }

Expand description

One directed codec-version upgrade a component declares.

Mirrors crate::StateSchemaUpgrade exactly, on the codec-version axis rather than the application-schema axis: edges strictly increase the version and at most one edge may leave any version.

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impl CodecVersionUpgrade

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pub fn new( from: CodecVersion, to: CodecVersion, apply: fn(&[u8]) -> Result<Vec<u8>, StateCodecError>, ) -> Result<CodecVersionUpgrade, ComponentStateError>

Declares a directed upgrade between two codec versions.

§Errors

Returns ComponentStateError::NonIncreasingCodecUpgrade when to does not exceed from.

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pub const fn from(&self) -> CodecVersion

Returns the version this upgrade reads.

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pub const fn to(&self) -> CodecVersion

Returns the version this upgrade produces.

Trait Implementations§

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impl Clone for CodecVersionUpgrade

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fn clone(&self) -> CodecVersionUpgrade

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Copy for CodecVersionUpgrade

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impl Debug for CodecVersionUpgrade

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for CodecVersionUpgrade

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. 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> Instrument for T

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

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

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fn in_current_span(self) -> Instrumented<Self> ⓘ

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

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impl<T, U> Into 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> IntoEither for T

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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

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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

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