rust-postgres/tokio-postgres/src/socket.rs
2019-03-04 21:22:50 -08:00

102 lines
2.4 KiB
Rust

use bytes::{Buf, BufMut};
use futures::Poll;
use std::io::{self, Read, Write};
use tokio_io::{AsyncRead, AsyncWrite};
use tokio_tcp::TcpStream;
#[cfg(unix)]
use tokio_uds::UnixStream;
#[derive(Debug)]
enum Inner {
Tcp(TcpStream),
#[cfg(unix)]
Unix(UnixStream),
}
/// The standard stream type used by the crate.
///
/// Requires the `runtime` Cargo feature (enabled by default).
#[derive(Debug)]
pub struct Socket(Inner);
impl Socket {
pub(crate) fn new_tcp(stream: TcpStream) -> Socket {
Socket(Inner::Tcp(stream))
}
#[cfg(unix)]
pub(crate) fn new_unix(stream: UnixStream) -> Socket {
Socket(Inner::Unix(stream))
}
}
impl Read for Socket {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
match &mut self.0 {
Inner::Tcp(s) => s.read(buf),
#[cfg(unix)]
Inner::Unix(s) => s.read(buf),
}
}
}
impl AsyncRead for Socket {
unsafe fn prepare_uninitialized_buffer(&self, buf: &mut [u8]) -> bool {
match &self.0 {
Inner::Tcp(s) => s.prepare_uninitialized_buffer(buf),
#[cfg(unix)]
Inner::Unix(s) => s.prepare_uninitialized_buffer(buf),
}
}
fn read_buf<B>(&mut self, buf: &mut B) -> Poll<usize, io::Error>
where
B: BufMut,
{
match &mut self.0 {
Inner::Tcp(s) => s.read_buf(buf),
#[cfg(unix)]
Inner::Unix(s) => s.read_buf(buf),
}
}
}
impl Write for Socket {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
match &mut self.0 {
Inner::Tcp(s) => s.write(buf),
#[cfg(unix)]
Inner::Unix(s) => s.write(buf),
}
}
fn flush(&mut self) -> io::Result<()> {
match &mut self.0 {
Inner::Tcp(s) => s.flush(),
#[cfg(unix)]
Inner::Unix(s) => s.flush(),
}
}
}
impl AsyncWrite for Socket {
fn shutdown(&mut self) -> Poll<(), io::Error> {
match &mut self.0 {
Inner::Tcp(s) => s.shutdown(),
#[cfg(unix)]
Inner::Unix(s) => s.shutdown(),
}
}
fn write_buf<B>(&mut self, buf: &mut B) -> Poll<usize, io::Error>
where
B: Buf,
{
match &mut self.0 {
Inner::Tcp(s) => s.write_buf(buf),
#[cfg(unix)]
Inner::Unix(s) => s.write_buf(buf),
}
}
}