Struct Pool 

pub struct Pool<V, M> { /* private fields */ }

Pool is an object you use to access a connection pool

Usually the whole logic of connection pool is spawned in another future. This object encapsulates a channel that is used to communicate with pool. This object also contains a clone of metrics collection object as it’s very important to collect metrics at this side of a channel.

Trait Implementations

impl<V, M: Clone> Clone for Pool<V, M>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<V: Debug, M: Debug> Debug for Pool<V, M>

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

Formats the value using the given formatter.

impl<V, M> Sink for Pool<V, M>

where M: Collect,

type SinkItem = V

The type of value that the sink accepts.

type SinkError = QueueError<V>

The type of value produced by the sink when an error occurs.

fn start_send( &mut self, item: Self::SinkItem, ) -> StartSend<Self::SinkItem, Self::SinkError>

Begin the process of sending a value to the sink.

fn poll_complete(&mut self) -> Poll<(), Self::SinkError>

Flush all output from this sink, if necessary.

fn close(&mut self) -> Poll<(), Self::SinkError>

A method to indicate that no more values will ever be pushed into this sink.

fn wait(self) -> Wait<Self>

where Self: Sized,

Creates a new object which will produce a synchronous sink.

fn with<U, F, Fut>(self, f: F) -> With<Self, U, F, Fut>

where F: FnMut(U) -> Fut, Fut: IntoFuture<Item = Self::SinkItem>, <Fut as IntoFuture>::Error: From<Self::SinkError>, Self: Sized,

Composes a function in front of the sink.

fn with_flat_map<U, F, St>(self, f: F) -> WithFlatMap<Self, U, F, St>

where F: FnMut(U) -> St, St: Stream<Item = Self::SinkItem, Error = Self::SinkError>, Self: Sized,

Composes a function in front of the sink.

fn sink_map_err<F, E>(self, f: F) -> SinkMapErr<Self, F>

where F: FnOnce(Self::SinkError) -> E, Self: Sized,

Transforms the error returned by the sink.

fn sink_from_err<E>(self) -> SinkFromErr<Self, E>

where E: From<Self::SinkError>, Self: Sized,

Map this sink’s error to any error implementing From for this sink’s Error, returning a new sink.

fn buffer(self, amt: usize) -> Buffer<Self>

where Self: Sized,

Adds a fixed-size buffer to the current sink.

fn fanout<S>(self, other: S) -> Fanout<Self, S>

where Self: Sized, Self::SinkItem: Clone, S: Sink<SinkItem = Self::SinkItem, SinkError = Self::SinkError>,

Fanout items to multiple sinks.

fn flush(self) -> Flush<Self>

where Self: Sized,

A future that completes when the sink has finished processing all pending requests.

fn send(self, item: Self::SinkItem) -> Send<Self>

where Self: Sized,

A future that completes after the given item has been fully processed into the sink, including flushing.

fn send_all<S>(self, stream: S) -> SendAll<Self, S>

where S: Stream<Item = Self::SinkItem>, Self::SinkError: From<<S as Stream>::Error>, Self: Sized,

A future that completes after the given stream has been fully processed into the sink, including flushing.