perf: use io copy with buffer pool (#6389)

* feat: add io methods with buffer

* chore: move io.Copy calls to utils.CopyWithBuffer

drivers/123/driver.go

@@ -194,7 +194,7 @@ func (d *Pan123) Put(ctx context.Context, dstDir model.Obj, stream model.FileStr
 	defer func() {
 		_ = tempFile.Close()
 	}()
-	if _, err = io.Copy(h, tempFile); err != nil {
+	if _, err = utils.CopyWithBuffer(h, tempFile); err != nil {
 		return err
 	}
 	_, err = tempFile.Seek(0, io.SeekStart)

drivers/189pc/utils.go

@@ -595,7 +595,7 @@ func (y *Cloud189PC) FastUpload(ctx context.Context, dstDir model.Obj, file mode
 		}
 
 		silceMd5.Reset()
-		if _, err := io.CopyN(io.MultiWriter(fileMd5, silceMd5), tempFile, byteSize); err != nil && err != io.EOF {
+		if _, err := utils.CopyWithBufferN(io.MultiWriter(fileMd5, silceMd5), tempFile, byteSize); err != nil && err != io.EOF {
 			return nil, err
 		}
 		md5Byte := silceMd5.Sum(nil)

drivers/aliyundrive/driver.go

@@ -194,7 +194,7 @@ func (d *AliDrive) Put(ctx context.Context, dstDir model.Obj, streamer model.Fil
 	}
 	if d.RapidUpload {
 		buf := bytes.NewBuffer(make([]byte, 0, 1024))
-		io.CopyN(buf, file, 1024)
+		utils.CopyWithBufferN(buf, file, 1024)
 		reqBody["pre_hash"] = utils.HashData(utils.SHA1, buf.Bytes())
 		if localFile != nil {
 			if _, err := localFile.Seek(0, io.SeekStart); err != nil {

drivers/aliyundrive_open/upload.go

@@ -136,7 +136,7 @@ func (d *AliyundriveOpen) calProofCode(stream model.FileStreamer) (string, error
 	if err != nil {
 		return "", err
 	}
-	_, err = io.CopyN(buf, reader, length)
+	_, err = utils.CopyWithBufferN(buf, reader, length)
 	if err != nil {
 		return "", err
 	}

drivers/baidu_netdisk/driver.go

@@ -211,7 +211,7 @@ func (d *BaiduNetdisk) Put(ctx context.Context, dstDir model.Obj, stream model.F
 		if i == count {
 			byteSize = lastBlockSize
 		}
-		_, err := io.CopyN(io.MultiWriter(fileMd5H, sliceMd5H, slicemd5H2Write), tempFile, byteSize)
+		_, err := utils.CopyWithBufferN(io.MultiWriter(fileMd5H, sliceMd5H, slicemd5H2Write), tempFile, byteSize)
 		if err != nil && err != io.EOF {
 			return nil, err
 		}

drivers/baidu_photo/driver.go

@@ -261,7 +261,7 @@ func (d *BaiduPhoto) Put(ctx context.Context, dstDir model.Obj, stream model.Fil
 		if i == count {
 			byteSize = lastBlockSize
 		}
-		_, err := io.CopyN(io.MultiWriter(fileMd5H, sliceMd5H, slicemd5H2Write), tempFile, byteSize)
+		_, err := utils.CopyWithBufferN(io.MultiWriter(fileMd5H, sliceMd5H, slicemd5H2Write), tempFile, byteSize)
 		if err != nil && err != io.EOF {
 			return nil, err
 		}

drivers/chaoxing/driver.go

@@ -229,7 +229,7 @@ func (d *ChaoXing) Put(ctx context.Context, dstDir model.Obj, stream model.FileS
 	if err != nil {
 		return err
 	}
-	_, err = io.Copy(filePart, stream)
+	_, err = utils.CopyWithBuffer(filePart, stream)
 	if err != nil {
 		return err
 	}

drivers/ilanzou/driver.go

@@ -271,7 +271,7 @@ func (d *ILanZou) Put(ctx context.Context, dstDir model.Obj, stream model.FileSt
 	defer func() {
 		_ = tempFile.Close()
 	}()
-	if _, err = io.Copy(h, tempFile); err != nil {
+	if _, err = utils.CopyWithBuffer(h, tempFile); err != nil {
 		return nil, err
 	}
 	_, err = tempFile.Seek(0, io.SeekStart)

drivers/mediatrack/driver.go

@@ -206,7 +206,7 @@ func (d *MediaTrack) Put(ctx context.Context, dstDir model.Obj, stream model.Fil
 		return err
 	}
 	h := md5.New()
-	_, err = io.Copy(h, tempFile)
+	_, err = utils.CopyWithBuffer(h, tempFile)
 	if err != nil {
 		return err
 	}

drivers/pikpak/util.go

@@ -4,6 +4,7 @@ import (
 	"crypto/sha1"
 	"encoding/hex"
 	"errors"
+	"github.com/alist-org/alist/v3/pkg/utils"
 	"io"
 	"net/http"
 
@@ -141,7 +142,7 @@ func getGcid(r io.Reader, size int64) (string, error) {
 	readSize := calcBlockSize(size)
 	for {
 		hash2.Reset()
-		if n, err := io.CopyN(hash2, r, readSize); err != nil && n == 0 {
+		if n, err := utils.CopyWithBufferN(hash2, r, readSize); err != nil && n == 0 {
 			if err != io.EOF {
 				return "", err
 			}

drivers/quark_uc/driver.go

@@ -143,7 +143,7 @@ func (d *QuarkOrUC) Put(ctx context.Context, dstDir model.Obj, stream model.File
 		_ = tempFile.Close()
 	}()
 	m := md5.New()
-	_, err = io.Copy(m, tempFile)
+	_, err = utils.CopyWithBuffer(m, tempFile)
 	if err != nil {
 		return err
 	}
@@ -153,7 +153,7 @@ func (d *QuarkOrUC) Put(ctx context.Context, dstDir model.Obj, stream model.File
 	}
 	md5Str := hex.EncodeToString(m.Sum(nil))
 	s := sha1.New()
-	_, err = io.Copy(s, tempFile)
+	_, err = utils.CopyWithBuffer(s, tempFile)
 	if err != nil {
 		return err
 	}

drivers/smb/util.go

@@ -1,7 +1,7 @@
 package smb
 
 import (
-	"io"
+	"github.com/alist-org/alist/v3/pkg/utils"
 	"io/fs"
 	"net"
 	"os"
@@ -74,7 +74,7 @@ func (d *SMB) CopyFile(src, dst string) error {
 	}
 	defer dstfd.Close()
 
-	if _, err = io.Copy(dstfd, srcfd); err != nil {
+	if _, err = utils.CopyWithBuffer(dstfd, srcfd); err != nil {
 		return err
 	}
 	if srcinfo, err = d.fs.Stat(src); err != nil {

drivers/thunder/util.go

@@ -190,7 +190,7 @@ func getGcid(r io.Reader, size int64) (string, error) {
 	readSize := calcBlockSize(size)
 	for {
 		hash2.Reset()
-		if n, err := io.CopyN(hash2, r, readSize); err != nil && n == 0 {
+		if n, err := utils.CopyWithBufferN(hash2, r, readSize); err != nil && n == 0 {
 			if err != io.EOF {
 				return "", err
 			}

internal/net/request.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"fmt"
+	"github.com/alist-org/alist/v3/pkg/utils"
 	"io"
 	"math"
 	"net/http"
@@ -271,7 +272,7 @@ func (d *downloader) tryDownloadChunk(params *HttpRequestParams, ch *chunk) (int
 		}
 	}
 
-	n, err := io.Copy(ch.buf, resp.Body)
+	n, err := utils.CopyWithBuffer(ch.buf, resp.Body)
 
 	if err != nil {
 		return n, &errReadingBody{err: err}

internal/net/serve.go

@@ -162,7 +162,7 @@ func ServeHTTP(w http.ResponseWriter, r *http.Request, name string, modTime time
 					pw.CloseWithError(err)
 					return
 				}
-				if _, err := io.CopyN(part, reader, ra.Length); err != nil {
+				if _, err := utils.CopyWithBufferN(part, reader, ra.Length); err != nil {
 					pw.CloseWithError(err)
 					return
 				}
@@ -182,7 +182,7 @@ func ServeHTTP(w http.ResponseWriter, r *http.Request, name string, modTime time
 	w.WriteHeader(code)
 
 	if r.Method != "HEAD" {
-		written, err := io.CopyN(w, sendContent, sendSize)
+		written, err := utils.CopyWithBufferN(w, sendContent, sendSize)
 		if err != nil {
 			log.Warnf("ServeHttp error. err: %s ", err)
 			if written != sendSize {

internal/net/util.go

@@ -2,6 +2,7 @@ package net
 
 import (
 	"fmt"
+	"github.com/alist-org/alist/v3/pkg/utils"
 	"io"
 	"math"
 	"mime/multipart"
@@ -330,7 +331,7 @@ func GetRangedHttpReader(readCloser io.ReadCloser, offset, length int64) (io.Rea
 		log.Warnf("offset is more than 100MB, if loading data from internet, high-latency and wasting of bandwidth is expected")
 	}
 
-	if _, err := io.Copy(io.Discard, io.LimitReader(readCloser, offset)); err != nil {
+	if _, err := utils.CopyWithBuffer(io.Discard, io.LimitReader(readCloser, offset)); err != nil {
 		return nil, err
 	}
 

internal/stream/stream.go

@@ -104,7 +104,7 @@ func (f *FileStream) RangeRead(httpRange http_range.Range) (io.Reader, error) {
 		if httpRange.Start == 0 && httpRange.Length <= InMemoryBufMaxSizeBytes && f.peekBuff == nil {
 			bufSize := utils.Min(httpRange.Length, f.GetSize())
 			newBuf := bytes.NewBuffer(make([]byte, 0, bufSize))
-			n, err := io.CopyN(newBuf, f.Reader, bufSize)
+			n, err := utils.CopyWithBufferN(newBuf, f.Reader, bufSize)
 			if err != nil {
 				return nil, err
 			}

pkg/gowebdav/client.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"encoding/xml"
 	"fmt"
+	"github.com/alist-org/alist/v3/pkg/utils"
 	"io"
 	"net/http"
 	"net/url"
@@ -419,7 +420,7 @@ func (c *Client) ReadStreamRange(path string, offset, length int64) (io.ReadClos
 	// stream in rs.Body
 	if rs.StatusCode == 200 {
 		// discard first 'offset' bytes.
-		if _, err := io.Copy(io.Discard, io.LimitReader(rs.Body, offset)); err != nil {
+		if _, err := utils.CopyWithBuffer(io.Discard, io.LimitReader(rs.Body, offset)); err != nil {
 			return nil, newPathErrorErr("ReadStreamRange", path, err)
 		}
 

pkg/utils/file.go

@@ -32,7 +32,7 @@ func CopyFile(src, dst string) error {
 	}
 	defer dstfd.Close()
 
-	if _, err = io.Copy(dstfd, srcfd); err != nil {
+	if _, err = CopyWithBuffer(dstfd, srcfd); err != nil {
 		return err
 	}
 	if srcinfo, err = os.Stat(src); err != nil {
@@ -121,7 +121,7 @@ func CreateTempFile(r io.Reader, size int64) (*os.File, error) {
 	if err != nil {
 		return nil, err
 	}
-	readBytes, err := io.Copy(f, r)
+	readBytes, err := CopyWithBuffer(f, r)
 	if err != nil {
 		_ = os.Remove(f.Name())
 		return nil, errs.NewErr(err, "CreateTempFile failed")

pkg/utils/hash.go

@@ -96,7 +96,7 @@ func HashData(hashType *HashType, data []byte, params ...any) string {
 // HashReader get hash of one hashType from a reader
 func HashReader(hashType *HashType, reader io.Reader, params ...any) (string, error) {
 	h := hashType.NewFunc(params...)
-	_, err := io.Copy(h, reader)
+	_, err := CopyWithBuffer(h, reader)
 	if err != nil {
 		return "", errs.NewErr(err, "HashReader error")
 	}

pkg/utils/hash_test.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"io"
 	"testing"
 )
 
@@ -36,7 +35,7 @@ var hashTestSet = []hashTest{
 func TestMultiHasher(t *testing.T) {
 	for _, test := range hashTestSet {
 		mh := NewMultiHasher([]*HashType{MD5, SHA1, SHA256})
-		n, err := io.Copy(mh, bytes.NewBuffer(test.input))
+		n, err := CopyWithBuffer(mh, bytes.NewBuffer(test.input))
 		require.NoError(t, err)
 		assert.Len(t, test.input, int(n))
 		hashInfo := mh.GetHashInfo()

pkg/utils/io.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"sync"
 	"time"
 
 	"golang.org/x/exp/constraints"
@@ -29,7 +30,7 @@ func CopyWithCtx(ctx context.Context, out io.Writer, in io.Reader, size int64, p
 	// possible in the call process.
 	var finish int64 = 0
 	s := size / 100
-	_, err := io.Copy(out, readerFunc(func(p []byte) (int, error) {
+	_, err := CopyWithBuffer(out, readerFunc(func(p []byte) (int, error) {
 		// golang non-blocking channel: https://gobyexample.com/non-blocking-channel-operations
 		select {
 		// if context has been canceled
@@ -204,3 +205,31 @@ func Max[T constraints.Ordered](a, b T) T {
 	}
 	return a
 }
+
+var IoBuffPool = &sync.Pool{
+	New: func() interface{} {
+		return make([]byte, 32*1024*2) // Two times of size in io package
+	},
+}
+
+func CopyWithBuffer(dst io.Writer, src io.Reader) (written int64, err error) {
+	buff := IoBuffPool.Get().([]byte)
+	defer IoBuffPool.Put(buff)
+	written, err = io.CopyBuffer(dst, src, buff)
+	if err != nil {
+		return
+	}
+	return written, nil
+}
+
+func CopyWithBufferN(dst io.Writer, src io.Reader, n int64) (written int64, err error) {
+	written, err = CopyWithBuffer(dst, io.LimitReader(src, n))
+	if written == n {
+		return n, nil
+	}
+	if written < n && err == nil {
+		// src stopped early; must have been EOF.
+		err = io.EOF
+	}
+	return
+}