refactor

veilid-tools/src/clone_stream.rs

@@ -0,0 +1,112 @@
+use super::*;
+
+use core::pin::Pin;
+use core::task::{Context, Poll};
+use futures_util::AsyncRead as Read;
+use futures_util::AsyncWrite as Write;
+use futures_util::Sink;
+use futures_util::Stream;
+use std::io;
+
+pub struct CloneStream<T>
+where
+    T: Unpin,
+{
+    inner: Arc<Mutex<T>>,
+}
+
+impl<T> Clone for CloneStream<T>
+where
+    T: Unpin,
+{
+    fn clone(&self) -> Self {
+        Self {
+            inner: self.inner.clone(),
+        }
+    }
+}
+
+impl<T> CloneStream<T>
+where
+    T: Unpin,
+{
+    pub fn new(t: T) -> Self {
+        Self {
+            inner: Arc::new(Mutex::new(t)),
+        }
+    }
+}
+
+impl<T> Read for CloneStream<T>
+where
+    T: Read + Unpin,
+{
+    fn poll_read(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+        buf: &mut [u8],
+    ) -> Poll<io::Result<usize>> {
+        let mut inner = self.inner.lock();
+        Pin::new(&mut *inner).poll_read(cx, buf)
+    }
+}
+
+impl<T> Write for CloneStream<T>
+where
+    T: Write + Unpin,
+{
+    fn poll_write(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+        buf: &[u8],
+    ) -> Poll<io::Result<usize>> {
+        let mut inner = self.inner.lock();
+        Pin::new(&mut *inner).poll_write(cx, buf)
+    }
+
+    fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
+        let mut inner = self.inner.lock();
+        Pin::new(&mut *inner).poll_flush(cx)
+    }
+
+    fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
+        let mut inner = self.inner.lock();
+        Pin::new(&mut *inner).poll_close(cx)
+    }
+}
+
+impl<T> Stream for CloneStream<T>
+where
+    T: Stream + Unpin,
+{
+    type Item = T::Item;
+
+    fn poll_next(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
+        let mut inner = self.inner.lock();
+        Pin::new(&mut *inner).poll_next(cx)
+    }
+}
+
+impl<T, Item> Sink<Item> for CloneStream<T>
+where
+    T: Sink<Item> + Unpin,
+{
+    type Error = T::Error;
+
+    fn poll_ready(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+        let mut inner = self.inner.lock();
+        Pin::new(&mut *inner).poll_ready(cx)
+    }
+    fn start_send(self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error> {
+        let mut inner = self.inner.lock();
+        Pin::new(&mut *inner).start_send(item)
+    }
+    fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+        let mut inner = self.inner.lock();
+        Pin::new(&mut *inner).poll_flush(cx)
+    }
+    fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+        let mut inner = self.inner.lock();
+        Pin::new(&mut *inner).poll_close(cx)
+    }
+}