forked from TrueCloudLab/distribution
Do not use Swift server side copy for manifests to handle >5G files
Signed-off-by: Sylvain Baubeau <sbaubeau@redhat.com>
This commit is contained in:
Sylvain Baubeau
parent
326c3a9c49
commit
b4cf6c053b
1 changed files with 76 additions and 27 deletions
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@ -20,7 +20,10 @@ package swift
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import (
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"bytes"
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"crypto/rand"
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"crypto/sha1"
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"crypto/tls"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"io"
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@ -237,6 +240,7 @@ func (d *driver) WriteStream(ctx context.Context, path string, offset int64, rea
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paddingReader io.Reader
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currentLength int64
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cursor int64
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segmentPath string
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)
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partNumber := 1
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@ -244,7 +248,7 @@ func (d *driver) WriteStream(ctx context.Context, path string, offset int64, rea
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zeroBuf := make([]byte, d.ChunkSize)
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getSegment := func() string {
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return fmt.Sprintf("%s/%016d", d.swiftSegmentPath(path), partNumber)
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return fmt.Sprintf("%s/%016d", segmentPath, partNumber)
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}
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max := func(a int64, b int64) int64 {
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@ -254,24 +258,36 @@ func (d *driver) WriteStream(ctx context.Context, path string, offset int64, rea
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return b
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}
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info, _, err := d.Conn.Object(d.Container, d.swiftPath(path))
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if err != nil {
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if err == swift.ObjectNotFound {
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// Create a object manifest
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manifest, err := d.createManifest(path)
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if err != nil {
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createManifest := true
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info, headers, err := d.Conn.Object(d.Container, d.swiftPath(path))
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if err == nil {
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manifest, ok := headers["X-Object-Manifest"]
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if !ok {
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if segmentPath, err = d.swiftSegmentPath(path); err != nil {
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return 0, err
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}
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manifest.Close()
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} else if err == swift.ContainerNotFound {
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return 0, storagedriver.PathNotFoundError{Path: path}
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if err := d.Conn.ObjectMove(d.Container, d.swiftPath(path), d.Container, getSegment()); err != nil {
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return 0, err
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}
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segments = append(segments, info)
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} else {
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_, segmentPath = parseManifest(manifest)
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if segments, err = d.getAllSegments(segmentPath); err != nil {
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return 0, err
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}
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createManifest = false
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}
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currentLength = info.Bytes
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} else if err == swift.ObjectNotFound {
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if segmentPath, err = d.swiftSegmentPath(path); err != nil {
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return 0, err
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}
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} else {
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// The manifest already exists. Get all the segments
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currentLength = info.Bytes
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if segments, err = d.getAllSegments(path); err != nil {
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return 0, err
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}
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if createManifest {
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if err := d.createManifest(path, d.Container+"/"+segmentPath); err != nil {
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return 0, err
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}
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}
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@ -468,8 +484,18 @@ func (d *driver) List(ctx context.Context, path string) ([]string, error) {
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// Move moves an object stored at sourcePath to destPath, removing the original
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// object.
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func (d *driver) Move(ctx context.Context, sourcePath string, destPath string) error {
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err := d.Conn.ObjectMove(d.Container, d.swiftPath(sourcePath), d.Container, d.swiftPath(destPath))
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if err == swift.ContainerNotFound || err == swift.ObjectNotFound {
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_, headers, err := d.Conn.Object(d.Container, d.swiftPath(sourcePath))
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if err == nil {
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if manifest, ok := headers["X-Object-Manifest"]; ok {
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if err = d.createManifest(destPath, manifest); err != nil {
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return err
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}
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err = d.Conn.ObjectDelete(d.Container, d.swiftPath(sourcePath))
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} else {
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err = d.Conn.ObjectMove(d.Container, d.swiftPath(sourcePath), d.Container, d.swiftPath(destPath))
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}
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}
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if err == swift.ObjectNotFound {
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return storagedriver.PathNotFoundError{Path: sourcePath}
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}
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return err
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@ -509,9 +535,8 @@ func (d *driver) Delete(ctx context.Context, path string) error {
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if _, headers, err := d.Conn.Object(d.Container, obj.Name); err == nil {
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manifest, ok := headers["X-Object-Manifest"]
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if ok {
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components := strings.SplitN(manifest, "/", 2)
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segContainer := components[0]
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segments, err := d.getAllSegments(components[1])
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segContainer, prefix := parseManifest(manifest)
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segments, err := d.getAllSegments(prefix)
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if err != nil {
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return err
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}
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@ -566,8 +591,14 @@ func (d *driver) swiftPath(path string) string {
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return strings.TrimLeft(strings.TrimRight(d.Prefix+"/files"+path, "/"), "/")
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}
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func (d *driver) swiftSegmentPath(path string) string {
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return strings.TrimLeft(strings.TrimRight(d.Prefix+"/segments"+path, "/"), "/")
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func (d *driver) swiftSegmentPath(path string) (string, error) {
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checksum := sha1.New()
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random := make([]byte, 32)
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if _, err := rand.Read(random); err != nil {
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return "", err
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}
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path = hex.EncodeToString(checksum.Sum(append([]byte(path), random...)))
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return strings.TrimLeft(strings.TrimRight(d.Prefix+"/segments/"+path[0:3]+"/"+path[3:], "/"), "/"), nil
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}
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func (d *driver) getContentType() string {
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@ -575,21 +606,30 @@ func (d *driver) getContentType() string {
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}
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func (d *driver) getAllSegments(path string) ([]swift.Object, error) {
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segments, err := d.Conn.ObjectsAll(d.Container, &swift.ObjectsOpts{Prefix: d.swiftSegmentPath(path)})
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segments, err := d.Conn.ObjectsAll(d.Container, &swift.ObjectsOpts{Prefix: path})
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if err == swift.ContainerNotFound {
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return nil, storagedriver.PathNotFoundError{Path: path}
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}
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return segments, err
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}
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func (d *driver) createManifest(path string) (*swift.ObjectCreateFile, error) {
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func (d *driver) createManifest(path string, segments string) error {
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headers := make(swift.Headers)
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headers["X-Object-Manifest"] = d.Container + "/" + d.swiftSegmentPath(path)
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file, err := d.Conn.ObjectCreate(d.Container, d.swiftPath(path), false, "", d.getContentType(), headers)
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if err == swift.ContainerNotFound {
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return nil, storagedriver.PathNotFoundError{Path: path}
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headers["X-Object-Manifest"] = segments
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manifest, err := d.Conn.ObjectCreate(d.Container, d.swiftPath(path), false, "", d.getContentType(), headers)
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if err != nil {
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if err == swift.ObjectNotFound {
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return storagedriver.PathNotFoundError{Path: path}
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}
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return err
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}
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return file, err
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if err := manifest.Close(); err != nil {
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if err == swift.ObjectNotFound {
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return storagedriver.PathNotFoundError{Path: path}
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}
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return err
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}
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return nil
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}
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func detectBulkDelete(authURL string) (bulkDelete bool) {
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@ -604,3 +644,12 @@ func detectBulkDelete(authURL string) (bulkDelete bool) {
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}
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return
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}
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func parseManifest(manifest string) (container string, prefix string) {
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components := strings.SplitN(manifest, "/", 2)
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container = components[0]
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if len(components) > 1 {
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prefix = components[1]
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}
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return container, prefix
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}
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