From fe43a608d00e2ada79e3b423e18cda33275a2c4e Mon Sep 17 00:00:00 2001
From: Yannick Ulrich <yannick.ulrich@durham.ac.uk>
Date: Sun, 26 Feb 2023 13:09:41 +0000
Subject: [PATCH] 6. Used io.Copy to move files

---
 fuse.go | 33 ++++++++++++++++++++++++++-------
 1 file changed, 26 insertions(+), 7 deletions(-)

diff --git a/fuse.go b/fuse.go
index 80d867f..7bb7535 100644
--- a/fuse.go
+++ b/fuse.go
@@ -10,6 +10,8 @@ import (
 	"github.com/hanwen/go-fuse/v2/fs"
 	"github.com/hanwen/go-fuse/v2/fuse"
 	"strconv"
+	"io"
+	"bytes"
 )
 
 type Device struct {
@@ -266,8 +268,17 @@ func (fh *bytesFileWriteHandle) Flush(ctx context.Context) (errno syscall.Errno)
 		log.Error("Flush failed: create").Str("path", fh.path).Err(err).Send()
 		return syscall.EROFS
 	}
-	nread, err := fp.Write(fh.content)
-	if err != nil || nread != len(fh.content) {
+
+	go func() {
+		// For every progress event
+		for sent := range fp.Progress() {
+			log.Info("Progress").Int("bytes", int(sent)).Int("of", len(fh.content)).Send();
+		}
+	}()
+
+	r := bytes.NewReader(fh.content)
+	nread, err := io.Copy(fp, r)
+	if err != nil {
 		log.Error("Flush failed: write").Str("path", fh.path).Err(err).Send()
 		fp.Close()
 		return syscall.EROFS
@@ -337,16 +348,24 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
 
 			defer fp.Close()
 
-			buf := make([]byte, f.self.size);
-			nread, err := fp.Read(buf)
-			if err != nil || nread != int(f.self.size) {
-				log.Error("Reading file failed").Str("path", f.path).Err(err).Send();
+			b := &bytes.Buffer{}
+
+			go func() {
+				// For every progress event
+				for sent := range fp.Progress() {
+					log.Info("Progress").Int("bytes", int(sent)).Int("of", int(f.self.size)).Send();
+				}
+			}()
+
+			_, err = io.Copy(b, fp)
+			if err != nil {
+				log.Error("Read failed").Str("path", f.path).Err(err).Send()
 				fp.Close()
 				return nil, 0, syscall.EROFS
 			}
 
 			fh = &bytesFileReadHandle{
-				content: buf,
+				content: b.Bytes(),
 			}
 			return fh, fuse.FOPEN_DIRECT_IO, 0
 		}