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HeaderView

Struct HeaderView 

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pub struct HeaderView<'a> { /* private fields */ }
Expand description

A minimal, borrowed view of request headers.

Backed by the transport’s parsed headers; the SPI may read a header (e.g. to find a partition key) but cannot mutate it here, mutations are expressed as crate::HeaderOps in the returned decision.

§Examples

use osproxy_spi::HeaderView;
let raw = vec![("X-Tenant".to_owned(), "acme".to_owned())];
let view = HeaderView::new(&raw);
assert_eq!(view.get("x-tenant"), Some("acme")); // case-insensitive
assert_eq!(view.get("absent"), None);

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impl<'a> HeaderView<'a>

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pub fn new(headers: &'a [(String, String)]) -> Self

Wraps a parsed header list.

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pub fn get(&self, name: &str) -> Option<&'a str>

Returns the first value for name (ASCII-case-insensitive), if present.

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impl<'a> Clone for HeaderView<'a>

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fn clone(&self) -> HeaderView<'a>

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<'a> Copy for HeaderView<'a>

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impl<'a> Debug for HeaderView<'a>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a> Freeze for HeaderView<'a>

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impl<'a> RefUnwindSafe for HeaderView<'a>

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impl<'a> Send for HeaderView<'a>

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impl<'a> Sync for HeaderView<'a>

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impl<'a> Unpin for HeaderView<'a>

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impl<'a> UnsafeUnpin for HeaderView<'a>

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impl<'a> UnwindSafe for HeaderView<'a>

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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, 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> 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.