pub struct Writer { /* private fields */ }Expand description
A reference to an open file writing to the cache.
Implementations§
source§impl Writer
impl Writer
sourcepub async fn create<P, K>(cache: P, key: K) -> Result<Writer>where
P: AsRef<Path>,
K: AsRef<str>,
pub async fn create<P, K>(cache: P, key: K) -> Result<Writer>where
P: AsRef<Path>,
K: AsRef<str>,
Creates a new writable file handle into the cache.
Example
use async_attributes;
use async_std::prelude::*;
#[async_attributes::main]
async fn main() -> cacache::Result<()> {
let mut fd = cacache::Writer::create("./my-cache", "my-key").await?;
fd.write_all(b"hello world").await.expect("Failed to write to cache");
// Data is not saved into the cache until you commit it.
fd.commit().await?;
Ok(())
}Trait Implementations§
source§impl AsyncWrite for Writer
impl AsyncWrite for Writer
source§fn poll_write(
self: Pin<&mut Self>,
cx: &mut TaskContext<'_>,
buf: &[u8]
) -> Poll<Result<usize>>
fn poll_write(
self: Pin<&mut Self>,
cx: &mut TaskContext<'_>,
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 TaskContext<'_>) -> Poll<Result<()>>
fn poll_flush(self: Pin<&mut Self>, cx: &mut TaskContext<'_>) -> Poll<Result<()>>
Attempt to flush the object, ensuring that any buffered data reach
their destination. Read more
source§fn poll_close(self: Pin<&mut Self>, cx: &mut TaskContext<'_>) -> Poll<Result<()>>
fn poll_close(self: Pin<&mut Self>, cx: &mut TaskContext<'_>) -> Poll<Result<()>>
Attempt to close the object. Read more
Auto Trait Implementations§
impl RefUnwindSafe for Writer
impl Send for Writer
impl Sync for Writer
impl Unpin for Writer
impl UnwindSafe for Writer
Blanket Implementations§
§impl<W> AsyncWriteExt for Wwhere
W: AsyncWrite + ?Sized,
impl<W> AsyncWriteExt for Wwhere
W: AsyncWrite + ?Sized,
§fn write<'a>(&'a mut self, buf: &'a [u8]) -> WriteFuture<'a, Self>where
Self: Unpin,
fn write<'a>(&'a mut self, buf: &'a [u8]) -> WriteFuture<'a, Self>where
Self: Unpin,
Writes some bytes into the byte stream. Read more
§fn write_vectored<'a>(
&'a mut self,
bufs: &'a [IoSlice<'a>]
) -> WriteVectoredFuture<'a, Self>where
Self: Unpin,
fn write_vectored<'a>(
&'a mut self,
bufs: &'a [IoSlice<'a>]
) -> WriteVectoredFuture<'a, Self>where
Self: Unpin,
§fn write_all<'a>(&'a mut self, buf: &'a [u8]) -> WriteAllFuture<'a, Self>where
Self: Unpin,
fn write_all<'a>(&'a mut self, buf: &'a [u8]) -> WriteAllFuture<'a, Self>where
Self: Unpin,
Writes an entire buffer into the byte stream. Read more
§impl<W> AsyncWriteExt for Wwhere
W: AsyncWrite + ?Sized,
impl<W> AsyncWriteExt for Wwhere
W: AsyncWrite + ?Sized,
§fn flush(&mut self) -> Flush<'_, Self>where
Self: Unpin,
fn flush(&mut self) -> Flush<'_, Self>where
Self: Unpin,
Creates a future which will entirely flush this
AsyncWrite. Read more§fn close(&mut self) -> Close<'_, Self>where
Self: Unpin,
fn close(&mut self) -> Close<'_, Self>where
Self: Unpin,
Creates a future which will entirely close this
AsyncWrite.§fn write<'a>(&'a mut self, buf: &'a [u8]) -> Write<'a, Self>where
Self: Unpin,
fn write<'a>(&'a mut self, buf: &'a [u8]) -> Write<'a, Self>where
Self: Unpin,
Creates a future which will write bytes from
buf into the object. Read more§fn write_vectored<'a>(
&'a mut self,
bufs: &'a [IoSlice<'a>]
) -> WriteVectored<'a, Self>where
Self: Unpin,
fn write_vectored<'a>(
&'a mut self,
bufs: &'a [IoSlice<'a>]
) -> WriteVectored<'a, Self>where
Self: Unpin,
Creates a future which will write bytes from
bufs into the object using vectored
IO operations. Read moresource§impl<T> WriteExt for Twhere
T: AsyncWrite + ?Sized,
impl<T> WriteExt for Twhere
T: AsyncWrite + ?Sized,
source§fn write<'a>(&'a mut self, buf: &'a [u8]) -> WriteFuture<'a, Self>where
Self: Unpin,
fn write<'a>(&'a mut self, buf: &'a [u8]) -> WriteFuture<'a, Self>where
Self: Unpin,
Writes some bytes into the byte stream. Read more
source§fn flush(&mut self) -> FlushFuture<'_, Self>where
Self: Unpin,
fn flush(&mut self) -> FlushFuture<'_, Self>where
Self: Unpin,
Flushes the stream to ensure that all buffered contents reach their destination. Read more