Trait FileAccess 

pub trait FileAccess:
    AsyncSeek
    + Send
    + Unpin
    + 'static {
    // Required method
    fn poll_read(
        self: Pin<&mut Self>,
        cx: &mut Context<'_>,
        len: usize,
    ) -> Poll<Result<Bytes, Error>>;
}

Trait that implements all the necessary file access methods used for serving files.

This trait exists as an alternative to AsyncRead that returns a Bytes directly, potentially eliminating a copy. Unlike AsyncRead, this does mean the implementation is responsible for providing the read buffer.

Required Methods

fn poll_read( self: Pin<&mut Self>, cx: &mut Context<'_>, len: usize, ) -> Poll<Result<Bytes, Error>>

Attempts to read from the file.

If no data is available for reading, the method returns Poll::Pending and arranges for the current task (via cx.waker()) to receive a notification when the object becomes readable or is closed.

An empty Bytes return value indicates EOF.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl FileAccess for Cursor<Bytes>

fn poll_read( self: Pin<&mut Self>, _cx: &mut Context<'_>, len: usize, ) -> Poll<Result<Bytes, Error>>

Implementors

impl FileAccess for TokioFileAccess