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LseTransformer

rustrade_data::exchange::lse::transformer

Struct LseTransformer 

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pub struct LseTransformer<Exchange, InstrumentKey, Kind> { /* private fields */ }
Expand description

Transformer for every London Strategic Edge subscription kind.

Carries no resume state unless the caller opted in via LseSubscriber::with_resume; without it this is a direct pass-through to StatelessTransformer.

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impl<Exchange, InstrumentKey, Kind> AttachedTransformer<LseResume> for LseTransformer<Exchange, InstrumentKey, Kind>
where Exchange: Connector,

Resume from what the connection handed over, if anything.

Replaces any resume state the transformer was built with: the connection’s is the one that knows which replay windows it opened.

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fn attached(&mut self, LseResume: LseResume)

Take what the connection handed the stream on attaching.
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impl<Exchange: Debug, InstrumentKey: Debug, Kind: Debug> Debug for LseTransformer<Exchange, InstrumentKey, Kind>

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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<Exchange, InstrumentKey, Kind> ExchangeTransformer<Exchange, InstrumentKey, Kind> for LseTransformer<Exchange, InstrumentKey, Kind>
where Exchange: Connector + Send, InstrumentKey: Clone + Send + Sync, Kind: SubscriptionKind + Send, Kind::Event: Sync, MarketIter<InstrumentKey, Kind::Event>: From<(ExchangeId, InstrumentKey, LseMessage)>,

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async fn init( instrument_map: Map<InstrumentKey>, initial_snapshots: &[MarketEvent<InstrumentKey, Kind::Event>], ws_sink_tx: UnboundedSender<WsMessage>, ) -> Result<Self, DataError>

Initialise without resumption.

This is the trait’s only seam and it is a static function, so it cannot carry the caller’s resume state; the stream that wants resumption bypasses it and constructs the transformer directly.

Initial snapshots are forwarded rather than dropped here, so this layer stops being the place they are lost. That is as far as forwarding reaches: the inner StatelessTransformer’s own init discards the argument unconditionally, as every stateless connector’s does, and this provider’s streams fetch no snapshot for it to discard. A future LSE kind that does fetch one would need a transformer not backed by StatelessTransformer before the snapshot reached it — forwarding is what makes that a visible gap rather than one hidden behind a &[] at the call site.

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impl<Exchange, InstrumentKey, Kind> Transformer for LseTransformer<Exchange, InstrumentKey, Kind>
where Exchange: Connector, InstrumentKey: Clone, Kind: SubscriptionKind, MarketIter<InstrumentKey, Kind::Event>: From<(ExchangeId, InstrumentKey, LseMessage)>,

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type Error = DataError

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type Input = LseMessage

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type Output = MarketEvent<InstrumentKey, <Kind as SubscriptionKind>::Event>

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type OutputIter = Vec<Result<<LseTransformer<Exchange, InstrumentKey, Kind> as Transformer>::Output, <LseTransformer<Exchange, InstrumentKey, Kind> as Transformer>::Error>>

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fn transform(&mut self, input: Self::Input) -> Self::OutputIter

Auto Trait Implementations§

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impl<Exchange, InstrumentKey, Kind> Freeze for LseTransformer<Exchange, InstrumentKey, Kind>
where StatelessTransformer<Exchange, InstrumentKey, Kind, LseMessage>: Freeze,

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impl<Exchange, InstrumentKey, Kind> RefUnwindSafe for LseTransformer<Exchange, InstrumentKey, Kind>
where StatelessTransformer<Exchange, InstrumentKey, Kind, LseMessage>: RefUnwindSafe,

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impl<Exchange, InstrumentKey, Kind> Send for LseTransformer<Exchange, InstrumentKey, Kind>
where StatelessTransformer<Exchange, InstrumentKey, Kind, LseMessage>: Send,

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impl<Exchange, InstrumentKey, Kind> Sync for LseTransformer<Exchange, InstrumentKey, Kind>
where StatelessTransformer<Exchange, InstrumentKey, Kind, LseMessage>: Sync,

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impl<Exchange, InstrumentKey, Kind> Unpin for LseTransformer<Exchange, InstrumentKey, Kind>
where StatelessTransformer<Exchange, InstrumentKey, Kind, LseMessage>: Unpin,

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impl<Exchange, InstrumentKey, Kind> UnsafeUnpin for LseTransformer<Exchange, InstrumentKey, Kind>
where StatelessTransformer<Exchange, InstrumentKey, Kind, LseMessage>: UnsafeUnpin,

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impl<Exchange, InstrumentKey, Kind> UnwindSafe for LseTransformer<Exchange, InstrumentKey, Kind>
where StatelessTransformer<Exchange, InstrumentKey, Kind, LseMessage>: UnwindSafe,

Blanket Implementations§

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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> AttachedTransformer<()> for T

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fn attached(&mut self, _: ())

Take what the connection handed the stream on attaching.
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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> Conv for T

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fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more
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impl<T> FmtForward for T

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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.
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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. 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> 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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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<T> JsonSchemaMaybe for T

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

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fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
where Self: Sized,

Pipes by value. This is generally the method you want to use. Read more
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fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R
where R: 'a,

Borrows self and passes that borrow into the pipe function. Read more
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fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R
where R: 'a,

Mutably borrows self and passes that borrow into the pipe function. Read more
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where Self: Borrow<B>, B: 'a + ?Sized, R: 'a,

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where Self: BorrowMut<B>, B: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more
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where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.
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fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function.
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where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

Borrows self, then passes self.deref() into the pipe function.
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where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function.
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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Dereferences the given pointer. Read more
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Mutably dereferences the given pointer. Read more
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where T: ?Sized,

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where T: Sized + Policy<B, E>, P: Policy<B, E>,

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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
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type Output = T

Should always be Self
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fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more
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Mutable access to a value. Read more
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where Self: Borrow<B>, B: ?Sized,

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where Self: BorrowMut<B>, B: ?Sized,

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where Self: AsRef<R>, R: ?Sized,

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Calls .tap() only in debug builds, and is erased in release builds.
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Calls .tap_mut() only in debug builds, and is erased in release builds.
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where Self: Borrow<B>, B: ?Sized,

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where Self: Deref<Target = T>, T: ?Sized,

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where Self: DerefMut<Target = T> + Deref, T: ?Sized,

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