test metacache

ecstore/src/io.rs

@@ -3,6 +3,8 @@ use std::io::Write;
 use std::pin::Pin;
 use std::task::{Context, Poll};
 use tokio::fs::File;
+use tokio::io::BufReader;
+use tokio::io::BufWriter;
 use tokio::io::{self, AsyncRead, AsyncWrite, ReadBuf};
 
 #[derive(Default)]
@@ -10,6 +12,7 @@ pub enum Reader {
     #[default]
     NotUse,
     File(File),
+    Buffer(BufReader<Vec<u8>>),
 }
 
 impl AsyncRead for Reader {
@@ -19,6 +22,9 @@ impl AsyncRead for Reader {
                 let file = Pin::new(file);
                 file.poll_read(cx, buf)
             }
+            Reader::Buffer(buffer) => {
+                todo!()
+            }
             Reader::NotUse => Poll::Ready(Ok(())),
         }
     }
@@ -29,36 +35,30 @@ pub enum Writer {
     #[default]
     NotUse,
     File(File),
+    Buffer(BufWriter<Vec<u8>>),
 }
 
 impl AsyncWrite for Writer {
     fn poll_write(self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &[u8]) -> Poll<io::Result<usize>> {
         match self.get_mut() {
-            Writer::File(file) => {
-                // Create a pinned reference from the file
-                let file = Pin::new(file);
-                file.poll_write(cx, buf)
-            }
+            Writer::File(file) => Pin::new(file).poll_write(cx, buf),
+            Writer::Buffer(buff) => Pin::new(buff).poll_write(cx, buf),
             Writer::NotUse => Poll::Ready(Ok(0)),
         }
     }
 
     fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
         match self.get_mut() {
-            Writer::File(file) => {
-                let file = Pin::new(file);
-                file.poll_flush(cx)
-            }
+            Writer::File(file) => Pin::new(file).poll_flush(cx),
+            Writer::Buffer(buff) => Pin::new(buff).poll_flush(cx),
             Writer::NotUse => Poll::Ready(Ok(())),
         }
     }
 
     fn poll_shutdown(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
         match self.get_mut() {
-            Writer::File(file) => {
-                let file = Pin::new(file);
-                file.poll_shutdown(cx)
-            }
+            Writer::File(file) => Pin::new(file).poll_shutdown(cx),
+            Writer::Buffer(buff) => Pin::new(buff).poll_shutdown(cx),
             Writer::NotUse => Poll::Ready(Ok(())),
         }
     }