Struct mz_balancerd::codec::FramedConn

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pub struct FramedConn<A> {
    inner: Buffer<Framed<Conn<A>, Codec>, BackendMessage>,
}
Expand description

A connection that manages the encoding and decoding of pgwire frames.

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§inner: Buffer<Framed<Conn<A>, Codec>, BackendMessage>

Implementations§

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impl<A> FramedConn<A>
where A: AsyncRead + AsyncWrite + Unpin,

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pub fn new(inner: Conn<A>) -> FramedConn<A>

Constructs a new framed connection.

The underlying connection, inner, is expected to be something like a TCP stream. Anything that implements AsyncRead and AsyncWrite will do.

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pub async fn recv(&mut self) -> Result<Option<FrontendMessage>, Error>

Reads and decodes one frontend message from the client.

Blocks until the client sends a complete message. If the client terminates the stream, returns None. Returns an error if the client sends a malformed message or if the connection underlying is broken.

§Cancel safety

This method is cancel safe. The returned future only holds onto a reference to thea underlying stream, so dropping it will never lose a value.

https://docs.rs/tokio-stream/latest/tokio_stream/trait.StreamExt.html#cancel-safety-1

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pub async fn send<M>(&mut self, message: M) -> Result<(), Error>
where M: Into<BackendMessage>,

Encodes and sends one backend message to the client.

Note that the connection is not flushed after calling this method. You must call FramedConn::flush explicitly. Returns an error if the underlying connection is broken.

Please use StateMachine::send instead if calling from StateMachine, as it applies session-based filters before calling this method.

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pub async fn flush(&mut self) -> Result<(), Error>

Flushes all outstanding messages.

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impl<A> FramedConn<A>
where A: AsyncRead + AsyncWrite + Unpin,

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pub fn inner(&mut self) -> &Conn<A>

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pub fn inner_mut(&mut self) -> &mut Conn<A>

Trait Implementations§

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impl<A> AsyncReady for FramedConn<A>

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fn ready<'life0, 'async_trait>( &'life0 self, interest: Interest, ) -> Pin<Box<dyn Future<Output = Result<Ready>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Checks for IO readiness. Read more

Auto Trait Implementations§

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impl<A> Freeze for FramedConn<A>
where A: Freeze,

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impl<A> RefUnwindSafe for FramedConn<A>
where A: RefUnwindSafe,

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impl<A> Send for FramedConn<A>
where A: Send,

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impl<A> Sync for FramedConn<A>
where A: Sync,

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impl<A> Unpin for FramedConn<A>
where A: Unpin,

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impl<A> UnwindSafe for FramedConn<A>
where A: UnwindSafe,

Blanket Implementations§

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

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Gets the TypeId of self. Read more
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Performs the cast.
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fn from(t: T) -> T

Returns the argument unchanged.

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fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
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