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pub struct Downloads<ZN, ZV, ZS> where
    ZN: Service<Request, Response = Response, Error = Box<dyn Error + Send + Sync + 'static>> + Send + 'static,
    ZN::Future: Send,
    ZV: Service<Request, Response = Response, 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
{ /* private fields */ }
Expand description

Represents a [Stream] of download and verification tasks.

Implementations

Initialize a new download stream with the provided services.

network is used to download transactions. verifier is used to verify transactions. state is used to check if transactions are already in the state.

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.

Queue a transaction for download (if needed) and verification.

Returns the action taken in response to the queue request.

Cancel download/verification tasks of transactions with the given transaction hash (see UnminedTxId::mined_id).

Cancel all running tasks and reset the downloader state.

Get the number of currently in-flight download tasks.

Trait Implementations

Formats the value using the given formatter. Read more

Executes the destructor for this type. Read more

Values yielded by the stream.

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

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

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Borrow this concrete type as a &dyn Any

Borrow this concrete type as a &mut dyn Any

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

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

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

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

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

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

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

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

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

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

Formats each item in a sequence. Read more

Returns the argument unchanged.

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

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

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

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

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Set the foreground color generically Read more

Set the background color generically. Read more

Change the foreground color to black

Change the background color to black

Change the foreground color to red

Change the background color to red

Change the foreground color to green

Change the background color to green

Change the foreground color to yellow

Change the background color to yellow

Change the foreground color to blue

Change the background color to blue

Change the foreground color to magenta

Change the background color to magenta

Change the foreground color to purple

Change the background color to purple

Change the foreground color to cyan

Change the background color to cyan

Change the foreground color to white

Change the background color to white

Change the foreground color to the terminal default

Change the background color to the terminal default

Change the foreground color to bright black

Change the background color to bright black

Change the foreground color to bright red

Change the background color to bright red

Change the foreground color to bright green

Change the background color to bright green

Change the foreground color to bright yellow

Change the background color to bright yellow

Change the foreground color to bright blue

Change the background color to bright blue

Change the foreground color to bright magenta

Change the background color to bright magenta

Change the foreground color to bright purple

Change the background color to bright purple

Change the foreground color to bright cyan

Change the background color to bright cyan

Change the foreground color to bright white

Change the background color to bright white

Make the text bold

Make the text dim

Make the text italicized

Make the text italicized

Make the text blink

Make the text blink (but fast!)

Swap the foreground and background colors

Hide the text

Cross out the text

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

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

Set the foreground color to a specific RGB value.

Set the background color to a specific RGB value.

Sets the foreground color to an RGB value.

Sets the background color to an RGB value.

Apply a runtime-determined style

Pipes by value. This is generally the method you want to use. Read more

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

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

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

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

Borrows self, then passes self.as_ref() into the pipe function.

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

Borrows self, then passes self.deref() into the pipe function.

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

The alignment of pointer.

The type for initializers.

Initializes a with the given initializer. Read more

Dereferences the given pointer. Read more

Mutably dereferences the given pointer. Read more

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

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

Should always be Self

Creates a future that resolves to the next item in the stream. Read more

Converts this stream into a future of (next_item, tail_of_stream). If the stream terminates, then the next item is None. Read more

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

Creates a stream which gives the current iteration count as well as the next value. Read more

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

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

Computes from this stream’s items new items of a different type using an asynchronous closure. Read more

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

Converts a stream of pairs into a future, which resolves to pair of containers. Read more

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

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

Repeats a stream endlessly. Read more

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

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

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

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

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

Maps a stream like [StreamExt::map] but flattens nested Streams. Read more

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

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

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

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

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

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

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

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

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

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

Borrows a stream, rather than consuming it. Read more

Catches unwinding panics while polling the stream. Read more

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

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

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

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

An adapter for zipping two streams together. Read more

Adapter for chaining two streams. Read more

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Immutable access to a value. Read more

Mutable access to a value. Read more

Immutable access to the Borrow<B> of a value. Read more

Mutable access to the BorrowMut<B> of a value. Read more

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

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

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

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

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

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

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

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

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

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

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

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

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

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

The type of successful values yielded by this future

The type of failures yielded by this future

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Adapter that converts this stream into an AsyncRead. Read more

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

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

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

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