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SelectedOperation

Struct SelectedOperation 

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pub struct SelectedOperation { /* private fields */ }
Expand description

A read-only view of the protocol and operation selected by routing, with the operation’s request-body limits.

The protocol is erased: everything after routing works through dyn ServerProtocol.

The operation schema is stored for consumers that are not generic over the operation: middleware and FromParts extractors use get_from_request or get_from_extensions to learn which operation was selected — for logging, auth, or metrics — without naming an Op type. See the middleware example on ServerProtocol.

Routing stores this view in a private extension carrier. Inserting or removing SelectedOperation directly in request extensions does not change the routed selection. Middleware must preserve request extensions: clearing or replacing all extensions removes the carrier, causing the upgrade or missing-handler fallback to return an empty 500 without polling the body or invoking the handler. Routing may already have collected the body before middleware runs.

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impl SelectedOperation

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pub fn get_from_request<B>(request: &Request<B>) -> Option<&Self>

Borrows the protocol and operation selected for this request from its extensions.

Returns None if no selection is stored, including before schema routing runs.

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pub fn get_from_extensions(extensions: &Extensions) -> Option<&Self>

Borrows the routed selection from request extensions, including in a FromParts extractor.

Returns None before routing or if middleware discarded the request extensions.

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pub fn protocol(&self) -> &SharedServerProtocol

The selected protocol.

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pub fn operation(&self) -> &'static OperationSchema<'static>

The routed operation’s schema, for code that cannot name the operation type.

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pub fn request_body_config(&self) -> RequestBodyCollectionConfig

The routed operation’s request-body collection limits, resolved when the router was built.

Carrying them here keeps the per-operation upgrade services free of per-operation state.

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impl Clone for SelectedOperation

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fn clone(&self) -> SelectedOperation

Returns a duplicate 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 SelectedOperation

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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<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<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> 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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impl<Unshared, Shared> IntoShared<Shared> for Unshared
where Shared: FromUnshared<Unshared>,

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fn into_shared(self) -> Shared

Creates a shared type from an unshared type.
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impl<T> ToOwned for T
where 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 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> WithSubscriber for T

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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
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,