Struct tokio_util::io::InspectWriter
source · pub struct InspectWriter<W, F> { /* private fields */ }Available on crate feature
io only.Expand description
An adapter that lets you inspect the data that’s being written.
This is useful for things like hashing data as it’s written out.
Implementations§
source§impl<W, F> InspectWriter<W, F>
impl<W, F> InspectWriter<W, F>
sourcepub fn new(writer: W, f: F) -> InspectWriter<W, F>where
W: AsyncWrite,
F: FnMut(&[u8]),
pub fn new(writer: W, f: F) -> InspectWriter<W, F>where W: AsyncWrite, F: FnMut(&[u8]),
Create a new InspectWriter, wrapping write and calling f for the
data successfully written by each write call.
The closure f will never be called with an empty slice. A vectored
write can result in multiple calls to f - at most one call to f per
buffer supplied to poll_write_vectored.
sourcepub fn into_inner(self) -> W
pub fn into_inner(self) -> W
Consumes the InspectWriter, returning the wrapped writer
Trait Implementations§
source§impl<W: AsyncWrite, F: FnMut(&[u8])> AsyncWrite for InspectWriter<W, F>
impl<W: AsyncWrite, F: FnMut(&[u8])> AsyncWrite for InspectWriter<W, F>
source§fn poll_write(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &[u8]
) -> Poll<Result<usize>>
fn poll_write( self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &[u8] ) -> Poll<Result<usize>>
Attempt to write bytes from
buf into the object. Read moresource§fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>
fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>
Attempts to flush the object, ensuring that any buffered data reach
their destination. Read more
source§fn poll_shutdown(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>
fn poll_shutdown(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>
Initiates or attempts to shut down this writer, returning success when
the I/O connection has completely shut down. Read more
source§fn poll_write_vectored(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
bufs: &[IoSlice<'_>]
) -> Poll<Result<usize>>
fn poll_write_vectored( self: Pin<&mut Self>, cx: &mut Context<'_>, bufs: &[IoSlice<'_>] ) -> Poll<Result<usize>>
Like
poll_write, except that it writes from a slice of buffers. Read moresource§fn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
Determines if this writer has an efficient
poll_write_vectored
implementation. Read moreimpl<'__pin, W, F> Unpin for InspectWriter<W, F>where __Origin<'__pin, W, F>: Unpin,
Auto Trait Implementations§
impl<W, F> RefUnwindSafe for InspectWriter<W, F>where F: RefUnwindSafe, W: RefUnwindSafe,
impl<W, F> Send for InspectWriter<W, F>where F: Send, W: Send,
impl<W, F> Sync for InspectWriter<W, F>where F: Sync, W: Sync,
impl<W, F> UnwindSafe for InspectWriter<W, F>where F: UnwindSafe, W: UnwindSafe,
Blanket Implementations§
source§impl<W> AsyncWriteExt for Wwhere
W: AsyncWrite + ?Sized,
impl<W> AsyncWriteExt for Wwhere W: AsyncWrite + ?Sized,
source§fn write<'a>(&'a mut self, src: &'a [u8]) -> Write<'a, Self>where
Self: Unpin,
fn write<'a>(&'a mut self, src: &'a [u8]) -> Write<'a, Self>where Self: Unpin,
Writes a buffer into this writer, returning how many bytes were
written. Read more
source§fn write_vectored<'a, 'b>(
&'a mut self,
bufs: &'a [IoSlice<'b>]
) -> WriteVectored<'a, 'b, Self>where
Self: Unpin,
fn write_vectored<'a, 'b>( &'a mut self, bufs: &'a [IoSlice<'b>] ) -> WriteVectored<'a, 'b, Self>where Self: Unpin,
source§fn write_buf<B, 'a>(&'a mut self, src: &'a mut B) -> WriteBuf<'a, Self, B>where
Self: Sized + Unpin,
B: Buf,
fn write_buf<B, 'a>(&'a mut self, src: &'a mut B) -> WriteBuf<'a, Self, B>where Self: Sized + Unpin, B: Buf,
Writes a buffer into this writer, advancing the buffer’s internal
cursor. Read more
source§fn write_all_buf<B, 'a>(&'a mut self, src: &'a mut B) -> WriteAllBuf<'a, Self, B>where
Self: Sized + Unpin,
B: Buf,
fn write_all_buf<B, 'a>(&'a mut self, src: &'a mut B) -> WriteAllBuf<'a, Self, B>where Self: Sized + Unpin, B: Buf,
Attempts to write an entire buffer into this writer. Read more
source§fn write_all<'a>(&'a mut self, src: &'a [u8]) -> WriteAll<'a, Self>where
Self: Unpin,
fn write_all<'a>(&'a mut self, src: &'a [u8]) -> WriteAll<'a, Self>where Self: Unpin,
Attempts to write an entire buffer into this writer. Read more
source§fn write_u8<'a>(&'a mut self, n: u8) -> WriteU8<&'a mut Self>where
Self: Unpin,
fn write_u8<'a>(&'a mut self, n: u8) -> WriteU8<&'a mut Self>where Self: Unpin,
Writes an unsigned 8-bit integer to the underlying writer. Read more
source§fn write_i8<'a>(&'a mut self, n: i8) -> WriteI8<&'a mut Self>where
Self: Unpin,
fn write_i8<'a>(&'a mut self, n: i8) -> WriteI8<&'a mut Self>where Self: Unpin,
Writes a signed 8-bit integer to the underlying writer. Read more
source§fn write_u16<'a>(&'a mut self, n: u16) -> WriteU16<&'a mut Self>where
Self: Unpin,
fn write_u16<'a>(&'a mut self, n: u16) -> WriteU16<&'a mut Self>where Self: Unpin,
Writes an unsigned 16-bit integer in big-endian order to the
underlying writer. Read more
source§fn write_i16<'a>(&'a mut self, n: i16) -> WriteI16<&'a mut Self>where
Self: Unpin,
fn write_i16<'a>(&'a mut self, n: i16) -> WriteI16<&'a mut Self>where Self: Unpin,
Writes a signed 16-bit integer in big-endian order to the
underlying writer. Read more
source§fn write_u32<'a>(&'a mut self, n: u32) -> WriteU32<&'a mut Self>where
Self: Unpin,
fn write_u32<'a>(&'a mut self, n: u32) -> WriteU32<&'a mut Self>where Self: Unpin,
Writes an unsigned 32-bit integer in big-endian order to the
underlying writer. Read more
source§fn write_i32<'a>(&'a mut self, n: i32) -> WriteI32<&'a mut Self>where
Self: Unpin,
fn write_i32<'a>(&'a mut self, n: i32) -> WriteI32<&'a mut Self>where Self: Unpin,
Writes a signed 32-bit integer in big-endian order to the
underlying writer. Read more
source§fn write_u64<'a>(&'a mut self, n: u64) -> WriteU64<&'a mut Self>where
Self: Unpin,
fn write_u64<'a>(&'a mut self, n: u64) -> WriteU64<&'a mut Self>where Self: Unpin,
Writes an unsigned 64-bit integer in big-endian order to the
underlying writer. Read more
source§fn write_i64<'a>(&'a mut self, n: i64) -> WriteI64<&'a mut Self>where
Self: Unpin,
fn write_i64<'a>(&'a mut self, n: i64) -> WriteI64<&'a mut Self>where Self: Unpin,
Writes an signed 64-bit integer in big-endian order to the
underlying writer. Read more
source§fn write_u128<'a>(&'a mut self, n: u128) -> WriteU128<&'a mut Self>where
Self: Unpin,
fn write_u128<'a>(&'a mut self, n: u128) -> WriteU128<&'a mut Self>where Self: Unpin,
Writes an unsigned 128-bit integer in big-endian order to the
underlying writer. Read more
source§fn write_i128<'a>(&'a mut self, n: i128) -> WriteI128<&'a mut Self>where
Self: Unpin,
fn write_i128<'a>(&'a mut self, n: i128) -> WriteI128<&'a mut Self>where Self: Unpin,
Writes an signed 128-bit integer in big-endian order to the
underlying writer. Read more
source§fn write_f32<'a>(&'a mut self, n: f32) -> WriteF32<&'a mut Self>where
Self: Unpin,
fn write_f32<'a>(&'a mut self, n: f32) -> WriteF32<&'a mut Self>where Self: Unpin,
Writes an 32-bit floating point type in big-endian order to the
underlying writer. Read more
source§fn write_f64<'a>(&'a mut self, n: f64) -> WriteF64<&'a mut Self>where
Self: Unpin,
fn write_f64<'a>(&'a mut self, n: f64) -> WriteF64<&'a mut Self>where Self: Unpin,
Writes an 64-bit floating point type in big-endian order to the
underlying writer. Read more
source§fn write_u16_le<'a>(&'a mut self, n: u16) -> WriteU16Le<&'a mut Self>where
Self: Unpin,
fn write_u16_le<'a>(&'a mut self, n: u16) -> WriteU16Le<&'a mut Self>where Self: Unpin,
Writes an unsigned 16-bit integer in little-endian order to the
underlying writer. Read more
source§fn write_i16_le<'a>(&'a mut self, n: i16) -> WriteI16Le<&'a mut Self>where
Self: Unpin,
fn write_i16_le<'a>(&'a mut self, n: i16) -> WriteI16Le<&'a mut Self>where Self: Unpin,
Writes a signed 16-bit integer in little-endian order to the
underlying writer. Read more
source§fn write_u32_le<'a>(&'a mut self, n: u32) -> WriteU32Le<&'a mut Self>where
Self: Unpin,
fn write_u32_le<'a>(&'a mut self, n: u32) -> WriteU32Le<&'a mut Self>where Self: Unpin,
Writes an unsigned 32-bit integer in little-endian order to the
underlying writer. Read more
source§fn write_i32_le<'a>(&'a mut self, n: i32) -> WriteI32Le<&'a mut Self>where
Self: Unpin,
fn write_i32_le<'a>(&'a mut self, n: i32) -> WriteI32Le<&'a mut Self>where Self: Unpin,
Writes a signed 32-bit integer in little-endian order to the
underlying writer. Read more
source§fn write_u64_le<'a>(&'a mut self, n: u64) -> WriteU64Le<&'a mut Self>where
Self: Unpin,
fn write_u64_le<'a>(&'a mut self, n: u64) -> WriteU64Le<&'a mut Self>where Self: Unpin,
Writes an unsigned 64-bit integer in little-endian order to the
underlying writer. Read more
source§fn write_i64_le<'a>(&'a mut self, n: i64) -> WriteI64Le<&'a mut Self>where
Self: Unpin,
fn write_i64_le<'a>(&'a mut self, n: i64) -> WriteI64Le<&'a mut Self>where Self: Unpin,
Writes an signed 64-bit integer in little-endian order to the
underlying writer. Read more
source§fn write_u128_le<'a>(&'a mut self, n: u128) -> WriteU128Le<&'a mut Self>where
Self: Unpin,
fn write_u128_le<'a>(&'a mut self, n: u128) -> WriteU128Le<&'a mut Self>where Self: Unpin,
Writes an unsigned 128-bit integer in little-endian order to the
underlying writer. Read more
source§fn write_i128_le<'a>(&'a mut self, n: i128) -> WriteI128Le<&'a mut Self>where
Self: Unpin,
fn write_i128_le<'a>(&'a mut self, n: i128) -> WriteI128Le<&'a mut Self>where Self: Unpin,
Writes an signed 128-bit integer in little-endian order to the
underlying writer. Read more
source§fn write_f32_le<'a>(&'a mut self, n: f32) -> WriteF32Le<&'a mut Self>where
Self: Unpin,
fn write_f32_le<'a>(&'a mut self, n: f32) -> WriteF32Le<&'a mut Self>where Self: Unpin,
Writes an 32-bit floating point type in little-endian order to the
underlying writer. Read more
source§fn write_f64_le<'a>(&'a mut self, n: f64) -> WriteF64Le<&'a mut Self>where
Self: Unpin,
fn write_f64_le<'a>(&'a mut self, n: f64) -> WriteF64Le<&'a mut Self>where Self: Unpin,
Writes an 64-bit floating point type in little-endian order to the
underlying writer. Read more
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> TokioAsyncWriteCompatExt for Twhere
T: AsyncWrite,
impl<T> TokioAsyncWriteCompatExt for Twhere T: AsyncWrite,
source§fn compat_write(self) -> Compat<Self>where
Self: Sized,
fn compat_write(self) -> Compat<Self>where Self: Sized,
Available on crate feature
compat only.Wraps
self with a compatibility layer that implements
futures_io::AsyncWrite.