Struct futures_ext::SinkToAsyncWrite

pub struct SinkToAsyncWrite<S> { /* fields omitted */ }

Simple adapter from Sink interface to AsyncWrite interface. It can be useful to convert from the interface that supports only AsyncWrite, and get Stream as a result. See pseudocode below

fn async_write_interface(writer: &mut dyn AsyncWrite) -> BoxFuture<(), Error> {
   unimplemented!()
}

fn foo() {
   use futures::sync::mpsc;
   let (sender, receiver) = mpsc::channel(1);

   tokio::spawn(
      async_write_interface(&mut SinkToAsyncWrite::new(sender))
          .map_err(|err| {})
   );

   // receiver is a stream of values written from async_write_interface
}

Implementations

impl<S> SinkToAsyncWrite<S>

pub fn new(sink: S) -> Self

Return an instance of SinkToAsyncWrite wrapping a Sink

Trait Implementations

impl<E, S> AsyncWrite for SinkToAsyncWrite<S> where
    S: Sink<SinkItem = Bytes, SinkError = E>,
    E: Debug, 

fn shutdown(&mut self) -> Poll<(), Error>

Initiates or attempts to shut down this writer, returning success when the I/O connection has completely shut down.

fn poll_write(&mut self, buf: &[u8]) -> Result<Async<usize>, Error>

Attempt to write bytes from buf into the object.

fn poll_flush(&mut self) -> Result<Async<()>, Error>

Attempt to flush the object, ensuring that any buffered data reach their destination.

fn write_buf<B>(&mut self, buf: &mut B) -> Result<Async<usize>, Error> where
    B: Buf, 

Write a Buf into this value, returning how many bytes were written.

impl<E, S> Write for SinkToAsyncWrite<S> where
    S: Sink<SinkItem = Bytes, SinkError = E>,
    E: Debug, 

fn write(&mut self, buf: &[u8]) -> Result<usize>

Write a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn is_write_vectored(&self) -> bool

🔬 This is a nightly-only experimental API. (can_vector)

Determines if this Writeer has an efficient write_vectored implementation.

fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this writer.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

🔬 This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

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

Creates a "by reference" adaptor for this instance of Write.