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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
use std::path::Path;
use tokio::{
io::{AsyncReadExt, AsyncWriteExt},
net::{unix::OwnedWriteHalf, UnixStream},
sync::mpsc::Sender,
};
use crate::util::errors::{wrap, AnyError};
pub struct ServerBridge {
write: OwnedWriteHalf,
}
pub trait FromServerMessage {
fn from_server_message(index: u16, message: &[u8]) -> Self;
fn from_closed_server_bridge(i: u16) -> Self;
}
pub async fn get_socket_rw_stream(path: &Path) -> Result<UnixStream, AnyError> {
let s = UnixStream::connect(path).await.map_err(|e| {
wrap(
e,
format!(
"error connecting to vscode server socket in {}",
path.display()
),
)
})?;
Ok(s)
}
const BUFFER_SIZE: usize = 65536;
impl ServerBridge {
pub async fn new<T>(path: &Path, index: u16, target: &Sender<T>) -> Result<Self, AnyError>
where
T: 'static + FromServerMessage + Send,
{
let stream = get_socket_rw_stream(path).await?;
let (mut read, write) = stream.into_split();
let tx = target.clone();
tokio::spawn(async move {
let mut read_buf = vec![0; BUFFER_SIZE];
loop {
match read.read(&mut read_buf).await {
Err(_) => return,
Ok(0) => {
let _ = tx.send(T::from_closed_server_bridge(index)).await;
return; // EOF
}
Ok(s) => {
let send = tx.send(T::from_server_message(index, &read_buf[..s])).await;
if send.is_err() {
return;
}
}
}
}
});
Ok(ServerBridge { write })
}
pub async fn write(&mut self, b: Vec<u8>) -> std::io::Result<()> {
self.write.write_all(&b).await?;
Ok(())
}
pub async fn close(mut self) -> std::io::Result<()> {
self.write.shutdown().await?;
Ok(())
}
}
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