Skip to main content

Capabilities

jetstream_rpc::session

Struct Capabilities 

Source 
pub struct Capabilities {
    pub lanes: LaneSupport,
    pub datagrams: bool,
    pub identity: IdentityKind,
    pub migration: bool,
}
Expand description

What a session can do.

The constructors mirror the conformance table in the sessions and lanes specification, so that a transport declares its row rather than assembling one.

Fields§

§lanes: LaneSupport

Whether the session can carry more than one lane.

§datagrams: bool

Whether the session has an unordered datagram channel.

§identity: IdentityKind

The peer identity model.

§migration: bool

Whether the session survives a change of network path.

Implementations§

Source§

impl Capabilities

Source

pub const fn iroh() -> Self

r[impl jetstream.session.conformance.iroh] iroh: many lanes, datagrams, key identity, migrates.

Source

pub const fn quic() -> Self

QUIC: many lanes, datagrams, certificate identity, migrates.

Source

pub const fn webtransport() -> Self

r[impl jetstream.session.conformance.webtransport] WebTransport over HTTP/3: many lanes, datagrams, certificate identity, migrates.

Source

pub const fn byte_stream() -> Self

r[impl jetstream.session.conformance.single-stream] TCP, TLS, unix sockets and stdio: one lane, nothing else.

Source

pub const fn in_process() -> Self

r[impl jetstream.session.local] In-process: many lanes, no datagrams, no identity. Migration is not meaningful, so it is reported as absent.

Source

pub fn supports(&self, capability: Capability) -> bool

Whether this session has capability.

Source

pub fn require(&self, capability: Capability) -> Result<(), SessionError>

r[impl jetstream.session.capabilities.degradation] Fail explicitly for a capability the session does not have, so that the alternative — emulating it silently — is never the easy path.

Trait Implementations§

Source§

impl Clone for Capabilities

Source§

fn clone(&self) -> Capabilities

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
Source§

impl Copy for Capabilities

Source§

impl Debug for Capabilities

Source§

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

Formats the value using the given formatter. Read more
Source§

impl Eq for Capabilities

Source§

impl Hash for Capabilities

Source§

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
Source§

impl PartialEq for Capabilities

Source§

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
Source§

impl StructuralPartialEq for Capabilities

Auto Trait Implementations§

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

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

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

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

Mutably borrows from an owned value. Read more
§

impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

§

impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

Source§

impl<T> CloneToUninit for T
where T: Clone,

Source§

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
§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

§

fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

§

fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

§

fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

§

impl<T> Instrument for T

§

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

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

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

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

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

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.

Source§

impl<T> IntoEither for T

Source§

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
Source§

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
§

impl<D> OwoColorize for D

§

fn fg<C>(&self) -> FgColorDisplay<'_, C, Self>
where C: Color,

Set the foreground color generically Read more
§

fn bg<C>(&self) -> BgColorDisplay<'_, C, Self>
where C: Color,

Set the background color generically. Read more
§

fn black(&self) -> FgColorDisplay<'_, Black, Self>

Change the foreground color to black
§

fn on_black(&self) -> BgColorDisplay<'_, Black, Self>

Change the background color to black
§

fn red(&self) -> FgColorDisplay<'_, Red, Self>

Change the foreground color to red
§

fn on_red(&self) -> BgColorDisplay<'_, Red, Self>

Change the background color to red
§

fn green(&self) -> FgColorDisplay<'_, Green, Self>

Change the foreground color to green
§

fn on_green(&self) -> BgColorDisplay<'_, Green, Self>

Change the background color to green
§

fn yellow(&self) -> FgColorDisplay<'_, Yellow, Self>

Change the foreground color to yellow
§

fn on_yellow(&self) -> BgColorDisplay<'_, Yellow, Self>

Change the background color to yellow
§

fn blue(&self) -> FgColorDisplay<'_, Blue, Self>

Change the foreground color to blue
§

fn on_blue(&self) -> BgColorDisplay<'_, Blue, Self>

Change the background color to blue
§

fn magenta(&self) -> FgColorDisplay<'_, Magenta, Self>

Change the foreground color to magenta
§

fn on_magenta(&self) -> BgColorDisplay<'_, Magenta, Self>

Change the background color to magenta
§

fn purple(&self) -> FgColorDisplay<'_, Magenta, Self>

Change the foreground color to purple
§

fn on_purple(&self) -> BgColorDisplay<'_, Magenta, Self>

Change the background color to purple
§

fn cyan(&self) -> FgColorDisplay<'_, Cyan, Self>

Change the foreground color to cyan
§

fn on_cyan(&self) -> BgColorDisplay<'_, Cyan, Self>

Change the background color to cyan
§

fn white(&self) -> FgColorDisplay<'_, White, Self>

Change the foreground color to white
§

fn on_white(&self) -> BgColorDisplay<'_, White, Self>

Change the background color to white
§

fn default_color(&self) -> FgColorDisplay<'_, Default, Self>

Change the foreground color to the terminal default
§

fn on_default_color(&self) -> BgColorDisplay<'_, Default, Self>

Change the background color to the terminal default
§

fn bright_black(&self) -> FgColorDisplay<'_, BrightBlack, Self>

Change the foreground color to bright black
§

fn on_bright_black(&self) -> BgColorDisplay<'_, BrightBlack, Self>

Change the background color to bright black
§

fn bright_red(&self) -> FgColorDisplay<'_, BrightRed, Self>

Change the foreground color to bright red
§

fn on_bright_red(&self) -> BgColorDisplay<'_, BrightRed, Self>

Change the background color to bright red
§

fn bright_green(&self) -> FgColorDisplay<'_, BrightGreen, Self>

Change the foreground color to bright green
§

fn on_bright_green(&self) -> BgColorDisplay<'_, BrightGreen, Self>

Change the background color to bright green
§

fn bright_yellow(&self) -> FgColorDisplay<'_, BrightYellow, Self>

Change the foreground color to bright yellow
§

fn on_bright_yellow(&self) -> BgColorDisplay<'_, BrightYellow, Self>

Change the background color to bright yellow
§

fn bright_blue(&self) -> FgColorDisplay<'_, BrightBlue, Self>

Change the foreground color to bright blue
§

fn on_bright_blue(&self) -> BgColorDisplay<'_, BrightBlue, Self>

Change the background color to bright blue
§

fn bright_magenta(&self) -> FgColorDisplay<'_, BrightMagenta, Self>

Change the foreground color to bright magenta
§

fn on_bright_magenta(&self) -> BgColorDisplay<'_, BrightMagenta, Self>

Change the background color to bright magenta
§

fn bright_purple(&self) -> FgColorDisplay<'_, BrightMagenta, Self>

Change the foreground color to bright purple
§

fn on_bright_purple(&self) -> BgColorDisplay<'_, BrightMagenta, Self>

Change the background color to bright purple
§

fn bright_cyan(&self) -> FgColorDisplay<'_, BrightCyan, Self>

Change the foreground color to bright cyan
§

fn on_bright_cyan(&self) -> BgColorDisplay<'_, BrightCyan, Self>

Change the background color to bright cyan
§

fn bright_white(&self) -> FgColorDisplay<'_, BrightWhite, Self>

Change the foreground color to bright white
§

fn on_bright_white(&self) -> BgColorDisplay<'_, BrightWhite, Self>

Change the background color to bright white
§

fn bold(&self) -> BoldDisplay<'_, Self>

Make the text bold
§

fn dimmed(&self) -> DimDisplay<'_, Self>

Make the text dim
§

fn italic(&self) -> ItalicDisplay<'_, Self>

Make the text italicized
§

fn underline(&self) -> UnderlineDisplay<'_, Self>

Make the text underlined
Make the text blink
Make the text blink (but fast!)
§

fn reversed(&self) -> ReversedDisplay<'_, Self>

Swap the foreground and background colors
§

fn hidden(&self) -> HiddenDisplay<'_, Self>

Hide the text
§

fn strikethrough(&self) -> StrikeThroughDisplay<'_, Self>

Cross out the text
§

fn color<Color>(&self, color: Color) -> FgDynColorDisplay<'_, Color, Self>
where Color: DynColor,

Set the foreground color at runtime. Only use if you do not know which color will be used at compile-time. If the color is constant, use either [OwoColorize::fg] or a color-specific method, such as [OwoColorize::green], Read more
§

fn on_color<Color>(&self, color: Color) -> BgDynColorDisplay<'_, Color, Self>
where Color: DynColor,

Set the background color at runtime. Only use if you do not know what color to use at compile-time. If the color is constant, use either [OwoColorize::bg] or a color-specific method, such as [OwoColorize::on_yellow], Read more
§

fn fg_rgb<const R: u8, const G: u8, const B: u8>( &self, ) -> FgColorDisplay<'_, CustomColor<R, G, B>, Self>

Set the foreground color to a specific RGB value.
§

fn bg_rgb<const R: u8, const G: u8, const B: u8>( &self, ) -> BgColorDisplay<'_, CustomColor<R, G, B>, Self>

Set the background color to a specific RGB value.
§

fn truecolor(&self, r: u8, g: u8, b: u8) -> FgDynColorDisplay<'_, Rgb, Self>

Sets the foreground color to an RGB value.
§

fn on_truecolor(&self, r: u8, g: u8, b: u8) -> BgDynColorDisplay<'_, Rgb, Self>

Sets the background color to an RGB value.
§

fn style(&self, style: Style) -> Styled<&Self>

Apply a runtime-determined style
§

impl<T> Pointable for T

§

const ALIGN: usize

The alignment of pointer.
§

type Init = T

The type for initializers.
§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
§

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

§

fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns [Action::Follow] only if self and other return Action::Follow. Read more
§

fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns [Action::Follow] if either self or other returns Action::Follow. Read more
§

impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

Source§

impl<T> Same for T

Source§

type Output = T

Should always be Self
Source§

impl<T> ToOwned for T
where T: Clone,

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

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

Source§

type Error = !

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, !>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

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

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

§

fn vzip(self) -> V

§

impl<T> WithSubscriber for T

§

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
§

fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more