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<Request, 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§
source§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<Request, 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,
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<Request, 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,
sourcepub fn new(
full_verify_concurrency_limit: usize,
network: ZN,
verifier: ZV,
state: ZS,
latest_chain_tip: LatestChainTip
) -> Self
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.
sourcepub fn download_and_verify(&mut self, hash: Hash) -> DownloadAction
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§
source§impl<ZN, ZV, ZS> Debug for Downloads<ZN, ZV, ZS>where
ZN: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static + Debug,
ZN::Future: Send,
ZV: Service<Request, Response = Hash, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static + Debug,
ZV::Future: Send,
ZS: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static + Debug,
ZS::Future: Send,
impl<ZN, ZV, ZS> Debug for Downloads<ZN, ZV, ZS>where
ZN: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static + Debug,
ZN::Future: Send,
ZV: Service<Request, Response = Hash, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static + Debug,
ZV::Future: Send,
ZS: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + Clone + 'static + Debug,
ZS::Future: Send,
source§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<Request, 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,
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<Request, 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 + Sync + Send + 'static, Global>>
type Item = Result<Hash, Box<dyn Error + Sync + Send + 'static, Global>>
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<Request, 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>
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F: FnMut(&mut S, Self::Item) -> Fut,
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Self: Sized,
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<B>>,
Self: Sized,
StreamExt::fold
] that holds internal state
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Fut: Future<Output = bool>,
Self: Sized,
fn skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F>where
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true
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Fut: Future<Output = bool>,
Self: Sized,
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§fn for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F>where
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Fut: Future<Output = ()>,
Self: Sized,
§fn for_each_concurrent<Fut, F>(
self,
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f: F
) -> ForEachConcurrent<Self, Fut, F>where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = ()>,
Self: Sized,
fn for_each_concurrent<Fut, F>(
self,
limit: impl Into<Option<usize>>,
f: F
) -> ForEachConcurrent<Self, Fut, F>where
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Self: Sized,
§fn take(self, n: usize) -> Take<Self>where
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Self: Sized,
n
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fn catch_unwind(self) -> CatchUnwind<Self>where
Self: Sized + UnwindSafe,
§fn boxed<'a>(
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + Send + 'a, Global>>where
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§fn buffered(self, n: usize) -> Buffered<Self>where
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fn buffered(self, n: usize) -> Buffered<Self>where
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§fn buffer_unordered(self, n: usize) -> BufferUnordered<Self>where
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Self: Sized,
§fn zip<St>(self, other: St) -> Zip<Self, St>where
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Self: Sized,
fn zip<St>(self, other: St) -> Zip<Self, St>where
St: Stream,
Self: Sized,
§fn chain<St>(self, other: St) -> Chain<Self, St>where
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§fn peekable(self) -> Peekable<Self>where
Self: Sized,
fn peekable(self) -> Peekable<Self>where
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Self: Sized,
§fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>where
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§fn forward<S>(self, sink: S) -> Forward<Self, S>where
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§fn inspect<F>(self, f: F) -> Inspect<Self, F>where
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§fn left_stream<B>(self) -> Either<Self, B>where
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§fn poll_next_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>where
Self: Unpin,
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§impl<St> StreamExt for Stwhere
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§fn merge<U>(self, other: U) -> Merge<Self, U>where
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§fn filter<F>(self, f: F) -> Filter<Self, F>where
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§fn filter_map<T, F>(self, f: F) -> FilterMap<Self, F>where
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§fn fuse(self) -> Fuse<Self>where
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. Read more§fn skip(self, n: usize) -> Skip<Self>where
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§fn fold<B, F>(self, init: B, f: F) -> FoldFuture<Self, B, F>where
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§fn timeout(self, duration: Duration) -> Timeout<Self>where
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§impl<T> Tap for T
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§fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Selfwhere
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§fn err_into<E>(self) -> ErrInto<Self, E>where
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fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>where
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fn try_for_each<Fut, F>(self, f: F) -> TryForEach<Self, Fut, F>where
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§fn try_skip_while<Fut, F>(self, f: F) -> TrySkipWhile<Self, Fut, F>where
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Self: Sized,
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Fut: Future<Output = Result<(), Self::Error>>,
Self: Sized,
fn try_for_each_concurrent<Fut, F>(
self,
limit: impl Into<Option<usize>>,
f: F
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§fn try_collect<C>(self) -> TryCollect<Self, C>where
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§fn try_chunks(self, capacity: usize) -> TryChunks<Self>where
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§fn try_filter<Fut, F>(self, f: F) -> TryFilter<Self, Fut, F>where
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§fn try_filter_map<Fut, F, T>(self, f: F) -> TryFilterMap<Self, Fut, F>where
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§fn try_buffer_unordered(self, n: usize) -> TryBufferUnordered<Self>where
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§fn try_buffered(self, n: usize) -> TryBuffered<Self>where
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Self: Sized,
§fn try_poll_next_unpin(
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) -> Poll<Option<Result<Self::Ok, Self::Error>>>where
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&mut self,
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TryStream::try_poll_next
] on Unpin
stream types.§fn into_async_read(self) -> IntoAsyncRead<Self>where
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AsyncBufRead
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