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revert checksum calculation to calculate-as-you-go

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This commit is contained in:
Michael Yang 2023-11-21 12:12:04 -08:00
parent 91897a606f
commit 2799784ac8
1 changed files with 15 additions and 16 deletions
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31
server/upload.go
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@ -5,6 +5,7 @@ import (
"crypto/md5"
"errors"
"fmt"
"hash"
"io"
"log"
"math"
@ -102,7 +103,7 @@ func (b *blobUpload) Prepare(ctx context.Context, requestURL *url.URL, opts *Reg
}
// set part.N to the current number of parts
b.Parts = append(b.Parts, blobUploadPart{blobUpload: b, N: len(b.Parts), Offset: offset, Size: size})
b.Parts = append(b.Parts, blobUploadPart{blobUpload: b, N: len(b.Parts), Offset: offset, Size: size, Hash: md5.New()})
offset += size
}
@ -147,14 +148,13 @@ func (b *blobUpload) Run(ctx context.Context, opts *RegistryOptions) {
g.Go(func() error {
var err error
for try := 0; try < maxRetries; try++ {
err = b.uploadChunk(inner, http.MethodPatch, requestURL, part, opts)
err = b.uploadPart(inner, http.MethodPatch, requestURL, part, opts)
switch {
case errors.Is(err, context.Canceled):
return err
case errors.Is(err, errMaxRetriesExceeded):
return err
case err != nil:
part.Reset()
sleep := time.Second * time.Duration(math.Pow(2, float64(try)))
log.Printf("%s part %d attempt %d failed: %v, retrying in %s", b.Digest[7:19], part.N, try, err, sleep)
time.Sleep(sleep)
@ -176,17 +176,10 @@ func (b *blobUpload) Run(ctx context.Context, opts *RegistryOptions) {
requestURL := <-b.nextURL
var sb strings.Builder
// calculate md5 checksum and add it to the commit request
var sb strings.Builder
for _, part := range b.Parts {
hash := md5.New()
if _, err := io.Copy(hash, io.NewSectionReader(b.file, part.Offset, part.Size)); err != nil {
b.err = err
return
}
sb.Write(hash.Sum(nil))
sb.Write(part.Sum(nil))
}
md5sum := md5.Sum([]byte(sb.String()))
@ -221,7 +214,10 @@ func (b *blobUpload) Run(ctx context.Context, opts *RegistryOptions) {
}
}
func (b *blobUpload) uploadChunk(ctx context.Context, method string, requestURL *url.URL, part *blobUploadPart, opts *RegistryOptions) error {
func (b *blobUpload) uploadPart(ctx context.Context, method string, requestURL *url.URL, part *blobUploadPart, opts *RegistryOptions) error {
// reset the part here to ensure alignment
part.Reset()
headers := make(http.Header)
headers.Set("Content-Type", "application/octet-stream")
headers.Set("Content-Length", fmt.Sprintf("%d", part.Size))
@ -232,7 +228,7 @@ func (b *blobUpload) uploadChunk(ctx context.Context, method string, requestURL
}
sr := io.NewSectionReader(b.file, part.Offset, part.Size)
resp, err := makeRequest(ctx, method, requestURL, headers, io.TeeReader(sr, part), opts)
resp, err := makeRequest(ctx, method, requestURL, headers, io.TeeReader(sr, io.MultiWriter(part, part.Hash)), opts)
if err != nil {
return err
}
@ -259,14 +255,13 @@ func (b *blobUpload) uploadChunk(ctx context.Context, method string, requestURL
// retry uploading to the redirect URL
for try := 0; try < maxRetries; try++ {
err = b.uploadChunk(ctx, http.MethodPut, redirectURL, part, nil)
err = b.uploadPart(ctx, http.MethodPut, redirectURL, part, nil)
switch {
case errors.Is(err, context.Canceled):
return err
case errors.Is(err, errMaxRetriesExceeded):
return err
case err != nil:
part.Reset()
sleep := time.Second * time.Duration(math.Pow(2, float64(try)))
log.Printf("%s part %d attempt %d failed: %v, retrying in %s", b.Digest[7:19], part.N, try, err, sleep)
time.Sleep(sleep)
@ -345,7 +340,10 @@ type blobUploadPart struct {
Offset int64
Size int64
written int64
*blobUpload
hash.Hash
}
func (p *blobUploadPart) Write(b []byte) (n int, err error) {
@ -356,6 +354,7 @@ func (p *blobUploadPart) Write(b []byte) (n int, err error) {
}
func (p *blobUploadPart) Reset() {
p.Hash.Reset()
p.Completed.Add(-int64(p.written))
p.written = 0
}