Struct zebrad::components::inbound::downloads::Downloads

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pub struct Downloads<ZN, ZV, ZS>where
    ZN: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
    ZN::Future: Send,
    ZV: Service<Arc<Block>, Response = Hash, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
    ZV::Future: Send,
    ZS: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
    ZS::Future: Send,{
    full_verify_concurrency_limit: usize,
    network: ZN,
    verifier: ZV,
    state: ZS,
    latest_chain_tip: LatestChainTip,
    pending: FuturesUnordered<JoinHandle<Result<Hash, (Box<dyn Error + Send + Sync + 'static>, Hash)>>>,
    cancel_handles: HashMap<Hash, Sender<()>>,
}

Expand description

Manages download and verification of blocks gossiped to this peer.

Fields

full_verify_concurrency_limit: usize

The configured full verification concurrency limit, after applying the minimum limit.

network: ZN

A service that forwards requests to connected peers, and returns their responses.

verifier: ZV

A service that verifies downloaded blocks.

state: ZS

A service that manages cached blockchain state.

latest_chain_tip: LatestChainTip

Allows efficient access to the best tip of the blockchain.

pending: FuturesUnordered<JoinHandle<Result<Hash, (Box<dyn Error + Send + Sync + 'static>, Hash)>>>

A list of pending block download and verify tasks.

cancel_handles: HashMap<Hash, Sender<()>>

A list of channels that can be used to cancel pending block download and verify tasks.

Implementations

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impl<ZN, ZV, ZS> Downloads<ZN, ZV, ZS>where
 ZN: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
 ZN::Future: Send,
 ZV: Service<Arc<Block>, Response = Hash, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
 ZV::Future: Send,
 ZS: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
 ZS::Future: Send,

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pub fn new(
    full_verify_concurrency_limit: usize,
    network: ZN,
    verifier: ZV,
    state: ZS,
    latest_chain_tip: LatestChainTip
) -> Self

Initialize a new download stream with the provided network, verifier, and state services. The latest_chain_tip must be linked to the provided state service.

The Downloads stream is agnostic to the network policy, so retry and timeout limits should be applied to the network service passed into this constructor.

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pub fn download_and_verify(&mut self, hash: Hash) -> DownloadAction

Queue a block for download and verification.

Returns the action taken in response to the queue request.

Trait Implementations

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impl<ZN: Debug, ZV: Debug, ZS: Debug> Debug for Downloads<ZN, ZV, ZS>where
 ZN: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
 ZN::Future: Send,
 ZV: Service<Arc<Block>, Response = Hash, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
 ZV::Future: Send,
 ZS: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
 ZS::Future: Send,

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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<ZN, ZV, ZS> Stream for Downloads<ZN, ZV, ZS>where
 ZN: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
 ZN::Future: Send,
 ZV: Service<Arc<Block>, Response = Hash, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
 ZV::Future: Send,
 ZS: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
 ZS::Future: Send,

type Item = Result<Hash, Box<dyn Error + Send + Sync + 'static, Global>>

Values yielded by the stream.

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fn poll_next(
self: Pin<&mut Self>,
cx: &mut Context<'_>
) -> Poll<Option<Self::Item>>

Attempt to pull out the next value of this stream, registering the current task for wakeup if the value is not yet available, and returning None if the stream is exhausted. Read more

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fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the stream. Read more

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impl<'pin, ZN, ZV, ZS> Unpin for Downloads<ZN, ZV, ZS>where
 ZN: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
 ZN::Future: Send,
 ZV: Service<Arc<Block>, Response = Hash, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
 ZV::Future: Send,
 ZS: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static,
 ZS::Future: Send,
 __Downloads<'pin, ZN, ZV, ZS>: Unpin,

Auto Trait Implementations

impl<ZN, ZV, ZS> !RefUnwindSafe for Downloads<ZN, ZV, ZS>

impl<ZN, ZV, ZS> Send for Downloads<ZN, ZV, ZS>

impl<ZN, ZV, ZS> Sync for Downloads<ZN, ZV, ZS>where
 ZN: Sync,
 ZS: Sync,
 ZV: Sync,

impl<ZN, ZV, ZS> !UnwindSafe for Downloads<ZN, ZV, ZS>

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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T: Any,

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fn as_any(&self) -> &(dyn Any + 'static)

Borrow this concrete type as a &dyn Any

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Borrow this concrete type as a &mut dyn Any

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T: ?Sized,

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T: ?Sized,

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

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Self: Into<T>,

Converts self into T using Into<T>. Read more

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Self: Display,

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Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted. Read more

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Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted. Read more

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Self: Octal,

Causes self to use its Octal implementation when Debug-formatted. Read more

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Self: Pointer,

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Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted. Read more

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Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted. Read more

fn fmt_list(self) -> FmtList<Self>where
&'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more

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const: unstable · source

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Returns the argument unchanged.

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

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U: From<T>,

const: unstable · 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.

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(&'a self) -> FgColorDisplay<'a, Black, Self>

Change the foreground color to black

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

Change the background color to black

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

Change the foreground color to red

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

Change the background color to red

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

Change the foreground color to green

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

Change the background color to green

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

Change the foreground color to yellow

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

Change the background color to yellow

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

Change the foreground color to blue

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

Change the background color to blue

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Change the foreground color to magenta

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Change the background color to magenta

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

Change the foreground color to purple

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

Change the background color to purple

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

Change the foreground color to cyan

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

Change the background color to cyan

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

Change the foreground color to white

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

Change the background color to white

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

Change the foreground color to the terminal default

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Change the background color to the terminal default

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Change the foreground color to bright black

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

Change the background color to bright black

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

Change the foreground color to bright red

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

Change the background color to bright red

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

Change the foreground color to bright green

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

Change the background color to bright green

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

Change the foreground color to bright yellow

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

Change the background color to bright yellow

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

Change the foreground color to bright blue

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

Change the background color to bright blue

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

Change the foreground color to bright magenta

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

Change the background color to bright magenta

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

Change the foreground color to bright purple

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

Change the background color to bright purple

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

Change the foreground color to bright cyan

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

Change the background color to bright cyan

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

Change the foreground color to bright white

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

Change the background color to bright white

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

Make the text bold

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

Make the text dim

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

Make the text italicized

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

Make the text italicized

fn blink(&'a self) -> BlinkDisplay<'a, Self>

Make the text blink

fn blink_fast(&'a self) -> BlinkFastDisplay<'a, Self>

Make the text blink (but fast!)

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

Swap the foreground and background colors

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

Hide the text

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

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T: ?Sized,

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

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Mutably borrows self and passes that borrow into the pipe function. Read more

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 Self: Borrow,
 B: 'a + ?Sized,
 R: 'a,

Borrows self, then passes self.borrow() into the pipe function. Read more

fn pipe_borrow_mut<'a, B, R>(
 &'a mut self,
 func: impl FnOnce(&'a mut B) -> R
) -> Rwhere
 Self: BorrowMut,
 B: 'a + ?Sized,
 R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more

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 Self: AsRef,
 U: 'a + ?Sized,
 R: 'a,

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 Self: AsMut,
 U: 'a + ?Sized,
 R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function. Read more

fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> Rwhere
 Self: Deref<Target = T>,
 T: 'a + ?Sized,
 R: 'a,

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 Self: DerefMut<Target = T> + Deref,
 T: 'a + ?Sized,
 R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function. Read more

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const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.

type Init = T

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

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Converts the type into a Result that can be sent as a response.

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type Output = T

Should always be Self

impl<T> StreamExt for Twhere
T: Stream + ?Sized,

fn next(&mut self) -> Next<'_, Self>where
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fn into_future(self) -> StreamFuture<Self>where
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Converts this stream into a future of (next_item, tail_of_stream). If the stream terminates, then the next item is None. Read more

fn map<T, F>(self, f: F) -> Map<Self, F>where
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fn filter<Fut, F>(self, f: F) -> Filter<Self, Fut, F>where
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Filters the values produced by this stream according to the provided asynchronous predicate. Read more

fn filter_map<Fut, T, F>(self, f: F) -> FilterMap<Self, Fut, F>where
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Filters the values produced by this stream while simultaneously mapping them to a different type according to the provided asynchronous closure. Read more

fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>where
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 FromA: Default + Extend<A>,
 FromB: Default + Extend,
 Self: Stream<Item = (A, B)>,

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fn concat(self) -> Concat<Self>where
 Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
 Self::Item: IntoIterator,
 Self::Item: Default,

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fn count(self) -> Count<Self>

Drives the stream to completion, counting the number of items. Read more

fn cycle(self) -> Cycle<Self>where
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Repeats a stream endlessly. Read more

fn fold<T, Fut, F>(self, init: T, f: F) -> Fold<Self, Fut, T, F>where
F: FnMut(T, Self::Item) -> Fut,
Fut: Future<Output = T>,

Execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more

fn any<Fut, F>(self, f: F) -> Any<Self, Fut, F>where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = bool>,

Execute predicate over asynchronous stream, and return true if any element in stream satisfied a predicate. Read more

fn all<Fut, F>(self, f: F) -> All<Self, Fut, F>where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = bool>,

Execute predicate over asynchronous stream, and return true if all element in stream satisfied a predicate. Read more

fn flatten(self) -> Flatten<Self>where
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Flattens a stream of streams into just one continuous stream. Read more

fn flatten_unordered(
 self,
 limit: impl Into<Option<usize>>
) -> FlattenUnordered<Self>where
 Self::Item: Stream,
 Self::Item: Unpin,

Flattens a stream of streams into just one continuous stream. Polls inner streams concurrently. Read more

fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>where
F: FnMut(Self::Item) -> U,
U: Stream,

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fn flat_map_unordered<U, F>(
 self,
 limit: impl Into<Option<usize>>,
 f: F
) -> FlatMapUnordered<Self, U, F>where
 U: Stream + Unpin,
 F: FnMut(Self::Item) -> U,

Maps a stream like [StreamExt::map] but flattens nested Streams and polls them concurrently, yielding items in any order, as they made available. Read more

fn scan<S, B, Fut, F>(self, initial_state: S, f: F) -> Scan<Self, S, Fut, F>where
F: FnMut(&mut S, Self::Item) -> Fut,
Fut: Future<Output = Option>,

Combinator similar to [StreamExt::fold] that holds internal state and produces a new stream. Read more

fn skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F>where
F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,

Skip elements on this stream while the provided asynchronous predicate resolves to true. Read more

fn take_while<Fut, F>(self, f: F) -> TakeWhile<Self, Fut, F>where
F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,

Take elements from this stream while the provided asynchronous predicate resolves to true. Read more

fn take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut>where
Fut: Future,

Take elements from this stream until the provided future resolves. Read more

fn for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F>where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = ()>,

Runs this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more

fn for_each_concurrent<Fut, F>(
 self,
 limit: impl Into<Option<usize>>,
 f: F
) -> ForEachConcurrent<Self, Fut, F>where
 F: FnMut(Self::Item) -> Fut,
 Fut: Future<Output = ()>,

Runs this stream to completion, executing the provided asynchronous closure for each element on the stream concurrently as elements become available. Read more

fn take(self, n: usize) -> Take<Self>

Creates a new stream of at most n items of the underlying stream. Read more

fn skip(self, n: usize) -> Skip<Self>

Creates a new stream which skips n items of the underlying stream. Read more

fn fuse(self) -> Fuse<Self>

Fuse a stream such that poll_next will never again be called once it has finished. This method can be used to turn any Stream into a FusedStream. Read more

fn by_ref(&mut self) -> &mut Self

Borrows a stream, rather than consuming it. Read more

fn catch_unwind(self) -> CatchUnwind<Self>where
Self: UnwindSafe,

Catches unwinding panics while polling the stream. Read more

fn boxed<'a>(
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + Send + 'a, Global>>where
Self: 'a + Send,

Wrap the stream in a Box, pinning it. Read more

fn boxed_local<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>>where
Self: 'a,

Wrap the stream in a Box, pinning it. Read more

fn buffered(self, n: usize) -> Buffered<Self>where
Self::Item: Future,

An adaptor for creating a buffered list of pending futures. Read more

fn buffer_unordered(self, n: usize) -> BufferUnordered<Self>where
Self::Item: Future,

An adaptor for creating a buffered list of pending futures (unordered). Read more

fn zip<St>(self, other: St) -> Zip<Self, St>where
St: Stream,

An adapter for zipping two streams together. Read more

fn chain<St>(self, other: St) -> Chain<Self, St>where
St: Stream<Item = Self::Item>,

Adapter for chaining two streams. Read more

fn peekable(self) -> Peekable<Self>

Creates a new stream which exposes a peek method. Read more

fn chunks(self, capacity: usize) -> Chunks<Self>

An adaptor for chunking up items of the stream inside a vector. Read more

fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>

An adaptor for chunking up ready items of the stream inside a vector. Read more

fn forward<S>(self, sink: S) -> Forward<Self, S>where
S: Sink<Self::Ok, Error = Self::Error>,
Self: TryStream,

A future that completes after the given stream has been fully processed into the sink and the sink has been flushed and closed. Read more

fn split<Item>(self) -> (SplitSink<Self, Item>, SplitStream<Self>)where
Self: Sink<Item>,

Splits this Stream + Sink object into separate Sink and Stream objects. Read more

fn inspect<F>(self, f: F) -> Inspect<Self, F>where
F: FnMut(&Self::Item),

Do something with each item of this stream, afterwards passing it on. Read more

fn left_stream(self) -> Either<Self, B>where
B: Stream<Item = Self::Item>,

Wrap this stream in an Either stream, making it the left-hand variant of that Either. Read more

fn right_stream(self) -> Either<B, Self>where
B: Stream<Item = Self::Item>,

Wrap this stream in an Either stream, making it the right-hand variant of that Either. Read more

fn poll_next_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>where
Self: Unpin,

A convenience method for calling [Stream::poll_next] on Unpin stream types. Read more

fn select_next_some(&mut self) -> SelectNextSome<'_, Self>where
Self: Unpin + FusedStream,

Returns a Future that resolves when the next item in this stream is ready. Read more

impl<St> StreamExt for Stwhere
St: Stream + ?Sized,

fn next(&mut self) -> Next<'_, Self>where
Self: Unpin,

Consumes and returns the next value in the stream or None if the stream is finished. Read more

fn try_next<T, E>(&mut self) -> TryNext<'_, Self>where
Self: Stream<Item = Result<T, E>> + Unpin,

Consumes and returns the next item in the stream. If an error is encountered before the next item, the error is returned instead. Read more

fn map<T, F>(self, f: F) -> Map<Self, F>where
F: FnMut(Self::Item) -> T,

Maps this stream’s items to a different type, returning a new stream of the resulting type. Read more

fn map_while<T, F>(self, f: F) -> MapWhile<Self, F>where
F: FnMut(Self::Item) -> Option<T>,

Map this stream’s items to a different type for as long as determined by the provided closure. A stream of the target type will be returned, which will yield elements until the closure returns None. Read more

fn then<F, Fut>(self, f: F) -> Then<Self, Fut, F>where
F: FnMut(Self::Item) -> Fut,
Fut: Future,

Maps this stream’s items asynchronously to a different type, returning a new stream of the resulting type. Read more

fn merge(self, other: U) -> Merge<Self, U>where
U: Stream<Item = Self::Item>,

Combine two streams into one by interleaving the output of both as it is produced. Read more

fn filter<F>(self, f: F) -> Filter<Self, F>where
F: FnMut(&Self::Item) -> bool,

Filters the values produced by this stream according to the provided predicate. Read more

fn filter_map<T, F>(self, f: F) -> FilterMap<Self, F>where
F: FnMut(Self::Item) -> Option<T>,

Filters the values produced by this stream while simultaneously mapping them to a different type according to the provided closure. Read more

fn fuse(self) -> Fuse<Self>

Creates a stream which ends after the first None. Read more

fn take(self, n: usize) -> Take<Self>

Creates a new stream of at most n items of the underlying stream. Read more

fn take_while<F>(self, f: F) -> TakeWhile<Self, F>where
F: FnMut(&Self::Item) -> bool,

Take elements from this stream while the provided predicate resolves to true. Read more

fn skip(self, n: usize) -> Skip<Self>

Creates a new stream that will skip the n first items of the underlying stream. Read more

fn skip_while<F>(self, f: F) -> SkipWhile<Self, F>where
F: FnMut(&Self::Item) -> bool,

Skip elements from the underlying stream while the provided predicate resolves to true. Read more

fn all<F>(&mut self, f: F) -> AllFuture<'_, Self, F>where
Self: Unpin,
F: FnMut(Self::Item) -> bool,

Tests if every element of the stream matches a predicate. Read more

fn any<F>(&mut self, f: F) -> AnyFuture<'_, Self, F>where
Self: Unpin,
F: FnMut(Self::Item) -> bool,

Tests if any element of the stream matches a predicate. Read more

fn chain(self, other: U) -> Chain<Self, U>where
U: Stream<Item = Self::Item>,

Combine two streams into one by first returning all values from the first stream then all values from the second stream. Read more

fn fold<B, F>(self, init: B, f: F) -> FoldFuture<Self, B, F>where
F: FnMut(B, Self::Item) -> B,

A combinator that applies a function to every element in a stream producing a single, final value. Read more

fn collect<T>(self) -> Collect<Self, T>where
T: FromStream<Self::Item>,

Drain stream pushing all emitted values into a collection. Read more

fn timeout(self, duration: Duration) -> Timeout<Self>

Applies a per-item timeout to the passed stream. Read more

fn throttle(self, duration: Duration) -> Throttle<Self>

Slows down a stream by enforcing a delay between items. Read more

fn chunks_timeout(
 self,
 max_size: usize,
 duration: Duration
) -> ChunksTimeout<Self>

Batches the items in the given stream using a maximum duration and size for each batch. Read more

impl<T> Tap for T

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

Immutable access to a value. Read more

fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self

Mutable access to a value. Read more

fn tap_borrow(self, func: impl FnOnce(&B)) -> Selfwhere
Self: Borrow,
B: ?Sized,

Immutable access to the Borrow of a value. Read more

fn tap_borrow_mut(self, func: impl FnOnce(&mut B)) -> Selfwhere
Self: BorrowMut,
B: ?Sized,

Mutable access to the BorrowMut of a value. Read more

fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Selfwhere
Self: AsRef<R>,
R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more

fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Selfwhere
Self: AsMut<R>,
R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more

fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Selfwhere
Self: Deref<Target = T>,
T: ?Sized,

Immutable access to the Deref::Target of a value. Read more

fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Selfwhere
Self: DerefMut<Target = T> + Deref,
T: ?Sized,

Mutable access to the Deref::Target of a value. Read more

fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.

fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds. Read more

fn tap_borrow_dbg(self, func: impl FnOnce(&B)) -> Selfwhere
Self: Borrow,
B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds. Read more

fn tap_borrow_mut_dbg(self, func: impl FnOnce(&mut B)) -> Selfwhere
Self: BorrowMut,
B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds. Read more

fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Selfwhere
Self: AsRef<R>,
R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds. Read more

fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Selfwhere
Self: AsMut<R>,
R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds. Read more

fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Selfwhere
Self: Deref<Target = T>,
T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds. Read more

fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Selfwhere
Self: DerefMut<Target = T> + Deref,
T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds. Read more

impl<T> TryConv for T

fn try_conv<T>(self) -> Result<T, Self::Error>where
Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more

source

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

source

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

impl<S, T, E> TryStream for Swhere
S: Stream<Item = Result<T, E>> + ?Sized,

type Ok = T

The type of successful values yielded by this future

type Error = E

The type of failures yielded by this future

fn try_poll_next(
self: Pin<&mut S>,
cx: &mut Context<'_>
) -> Poll<Option<Result<<S as TryStream>::Ok, <S as TryStream>::Error>>>

Poll this TryStream as if it were a Stream. Read more

impl<S> TryStreamExt for Swhere
S: TryStream + ?Sized,

fn err_into<E>(self) -> ErrInto<Self, E>where
Self::Error: Into<E>,

Wraps the current stream in a new stream which converts the error type into the one provided. Read more

fn map_ok<T, F>(self, f: F) -> MapOk<Self, F>where
F: FnMut(Self::Ok) -> T,

Wraps the current stream in a new stream which maps the success value using the provided closure. Read more

fn map_err<E, F>(self, f: F) -> MapErr<Self, F>where
F: FnMut(Self::Error) -> E,

Wraps the current stream in a new stream which maps the error value using the provided closure. Read more

fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>where
F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,

Chain on a computation for when a value is ready, passing the successful results to the provided closure f. Read more

fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F>where
F: FnMut(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,

Chain on a computation for when an error happens, passing the erroneous result to the provided closure f. Read more

fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F>where
F: FnMut(&Self::Ok),

Do something with the success value of this stream, afterwards passing it on. Read more

fn inspect_err<F>(self, f: F) -> InspectErr<Self, F>where
F: FnMut(&Self::Error),

Do something with the error value of this stream, afterwards passing it on. Read more

fn into_stream(self) -> IntoStream<Self>

Wraps a [TryStream] into a type that implements Stream Read more

fn try_next(&mut self) -> TryNext<'_, Self>where
Self: Unpin,

Creates a future that attempts to resolve the next item in the stream. If an error is encountered before the next item, the error is returned instead. Read more

fn try_for_each<Fut, F>(self, f: F) -> TryForEach<Self, Fut, F>where
F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Ok = (), Error = Self::Error>,

Attempts to run this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more

fn try_skip_while<Fut, F>(self, f: F) -> TrySkipWhile<Self, Fut, F>where
F: FnMut(&Self::Ok) -> Fut,
Fut: TryFuture<Ok = bool, Error = Self::Error>,

Skip elements on this stream while the provided asynchronous predicate resolves to true. Read more

fn try_take_while<Fut, F>(self, f: F) -> TryTakeWhile<Self, Fut, F>where
F: FnMut(&Self::Ok) -> Fut,
Fut: TryFuture<Ok = bool, Error = Self::Error>,

Take elements on this stream while the provided asynchronous predicate resolves to true. Read more

fn try_for_each_concurrent<Fut, F>(
 self,
 limit: impl Into<Option<usize>>,
 f: F
) -> TryForEachConcurrent<Self, Fut, F>where
 F: FnMut(Self::Ok) -> Fut,
 Fut: Future<Output = Result<(), Self::Error>>,

Attempts to run this stream to completion, executing the provided asynchronous closure for each element on the stream concurrently as elements become available, exiting as soon as an error occurs. Read more

fn try_collect<C>(self) -> TryCollect<Self, C>where
C: Default + Extend<Self::Ok>,

Attempt to transform a stream into a collection, returning a future representing the result of that computation. Read more

fn try_chunks(self, capacity: usize) -> TryChunks<Self>

An adaptor for chunking up successful items of the stream inside a vector. Read more

fn try_filter<Fut, F>(self, f: F) -> TryFilter<Self, Fut, F>where
Fut: Future<Output = bool>,
F: FnMut(&Self::Ok) -> Fut,

Attempt to filter the values produced by this stream according to the provided asynchronous closure. Read more

fn try_filter_map<Fut, F, T>(self, f: F) -> TryFilterMap<Self, Fut, F>where
Fut: TryFuture<Ok = Option<T>, Error = Self::Error>,
F: FnMut(Self::Ok) -> Fut,

Attempt to filter the values produced by this stream while simultaneously mapping them to a different type according to the provided asynchronous closure. Read more

fn try_flatten(self) -> TryFlatten<Self>where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error: From<Self::Error>,

Flattens a stream of streams into just one continuous stream. Read more

fn try_fold<T, Fut, F>(self, init: T, f: F) -> TryFold<Self, Fut, T, F>where
F: FnMut(T, Self::Ok) -> Fut,
Fut: TryFuture<Ok = T, Error = Self::Error>,

Attempt to execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more

fn try_concat(self) -> TryConcat<Self>where
 Self::Ok: Extend<<Self::Ok as IntoIterator>::Item>,
 Self::Ok: IntoIterator,
 Self::Ok: Default,

Attempt to concatenate all items of a stream into a single extendable destination, returning a future representing the end result. Read more

fn try_buffer_unordered(self, n: usize) -> TryBufferUnordered<Self>where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,

Attempt to execute several futures from a stream concurrently (unordered). Read more

fn try_buffered(self, n: usize) -> TryBuffered<Self>where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,

Attempt to execute several futures from a stream concurrently. Read more

fn try_poll_next_unpin(
 &mut self,
 cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Ok, Self::Error>>>where
 Self: Unpin,

A convenience method for calling [TryStream::try_poll_next] on Unpin stream types. Read more

fn into_async_read(self) -> IntoAsyncRead<Self>where
Self: TryStreamExt<Error = Error>,
Self::Ok: AsRef<[u8]>,

Adapter that converts this stream into an AsyncBufRead. Read more

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

fn vzip(self) -> V

source

impl<T> WithSubscriber for T

source

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

source

fn with_current_subscriber(self) -> WithDispatch<Self>

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

source

impl<T> WithSubscriber for T

source

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

source

fn with_current_subscriber(self) -> WithDispatch<Self>

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

Struct zebrad::components::inbound::downloads::Downloads

Fields

Implementations

pub fn new( full_verify_concurrency_limit: usize, network: ZN, verifier: ZV, state: ZS, latest_chain_tip: LatestChainTip) -> Self

pub fn download_and_verify(&mut self, hash: Hash) -> DownloadAction

Trait Implementations

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

type Item = Result<Hash, Box<dyn Error + Send + Sync + 'static, Global>>

fn poll_next( self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>

fn size_hint(&self) -> (usize, Option<usize>)

Auto Trait Implementations

impl<ZN, ZV, ZS> !RefUnwindSafe for Downloads<ZN, ZV, ZS>

impl<ZN, ZV, ZS> Send for Downloads<ZN, ZV, ZS>

impl<ZN, ZV, ZS> Sync for Downloads<ZN, ZV, ZS>where ZN: Sync, ZS: Sync, ZV: Sync,

impl<ZN, ZV, ZS> !UnwindSafe for Downloads<ZN, ZV, ZS>

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> AsAny for Twhere T: Any,

fn as_any(&self) -> &(dyn Any + 'static)

fn as_mut_any(&mut self) -> &mut (dyn Any + 'static)

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

fn borrow(&self) -> &T

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

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

impl<T> Conv for T

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

impl<T> FmtForward for T

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

fn fmt_display(self) -> FmtDisplay<Self>where Self: Display,

fn fmt_lower_exp(self) -> FmtLowerExp<Self>where Self: LowerExp,

fn fmt_lower_hex(self) -> FmtLowerHex<Self>where Self: LowerHex,

fn fmt_octal(self) -> FmtOctal<Self>where Self: Octal,

fn fmt_pointer(self) -> FmtPointer<Self>where Self: Pointer,

fn fmt_upper_exp(self) -> FmtUpperExp<Self>where Self: UpperExp,

fn fmt_upper_hex(self) -> FmtUpperHex<Self>where Self: UpperHex,

fn fmt_list(self) -> FmtList<Self>where &'a Self: for<'a> IntoIterator,

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

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

fn in_current_span(self) -> Instrumented<Self>

impl<T> Instrument for T

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

fn in_current_span(self) -> Instrumented<Self>

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

fn into(self) -> U

impl<D> OwoColorize for D

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

pub fn new(
full_verify_concurrency_limit: usize,
network: ZN,
verifier: ZV,
state: ZS,
latest_chain_tip: LatestChainTip
) -> Self

fn poll_next(
self: Pin<&mut Self>,
cx: &mut Context<'_>
) -> Poll<Option<Self::Item>>

impl<ZN, ZV, ZS> Sync for Downloads<ZN, ZV, ZS>where
ZN: Sync,
ZS: Sync,
ZV: Sync,

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

impl<T> AsAny for Twhere
T: Any,

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

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

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

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

fn fmt_display(self) -> FmtDisplay<Self>where
Self: Display,

fn fmt_lower_exp(self) -> FmtLowerExp<Self>where
Self: LowerExp,

fn fmt_lower_hex(self) -> FmtLowerHex<Self>where
Self: LowerHex,

fn fmt_octal(self) -> FmtOctal<Self>where
Self: Octal,

fn fmt_pointer(self) -> FmtPointer<Self>where
Self: Pointer,

fn fmt_upper_exp(self) -> FmtUpperExp<Self>where
Self: UpperExp,

fn fmt_upper_hex(self) -> FmtUpperHex<Self>where
Self: UpperHex,

fn fmt_list(self) -> FmtList<Self>where
&'a Self: for<'a> IntoIterator,

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

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

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

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

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

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

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

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

fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> Rwhere
R: 'a,

fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> Rwhere
R: 'a,

fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> Rwhere
Self: Borrow<B>,
B: 'a + ?Sized,
R: 'a,

fn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> Rwhere
Self: BorrowMut<B>,
B: 'a + ?Sized,
R: 'a,

fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> Rwhere
Self: AsRef<U>,
U: 'a + ?Sized,
R: 'a,

fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> Rwhere
Self: AsMut<U>,
U: 'a + ?Sized,
R: 'a,

fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> Rwhere
Self: Deref<Target = T>,
T: 'a + ?Sized,
R: 'a,

fn pipe_deref_mut<'a, T, R>(&'a mut self, func: impl FnOnce(&'a mut T) -> R) -> Rwhere
Self: DerefMut<Target = T> + Deref,
T: 'a + ?Sized,
R: 'a,

impl<T> StreamExt for Twhere
T: Stream + ?Sized,

fn next(&mut self) -> Next<'_, Self>where
Self: Unpin,

fn into_future(self) -> StreamFuture<Self>where
Self: Unpin,

fn map<T, F>(self, f: F) -> Map<Self, F>where
F: FnMut(Self::Item) -> T,

fn filter<Fut, F>(self, f: F) -> Filter<Self, Fut, F>where
F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,

fn filter_map<Fut, T, F>(self, f: F) -> FilterMap<Self, Fut, F>where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = Option<T>>,

fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>where
F: FnMut(Self::Item) -> Fut,
Fut: Future,

fn collect<C>(self) -> Collect<Self, C>where
C: Default + Extend<Self::Item>,

fn unzip<A, B, FromA, FromB>(self) -> Unzip<Self, FromA, FromB>where
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
Self: Stream<Item = (A, B)>,

fn concat(self) -> Concat<Self>where
Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
Self::Item: IntoIterator,
Self::Item: Default,

fn cycle(self) -> Cycle<Self>where
Self: Clone,