mirror of
https://github.com/project-zot/zot.git
synced 2024-12-16 21:56:37 -05:00
168d21da1e
Suppose we push two identical manifests (sharing same digest) but with different tags, then deleting by digest should throw an error otherwise we end up deleting all image tags (with gc) or dangling references (without gc) This behaviour is controlled via Authorization, added a new policy action named detectManifestsCollision which enables this behaviour Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com> Signed-off-by: Petu Eusebiu <peusebiu@cisco.com> Co-authored-by: Ramkumar Chinchani <rchincha@cisco.com>
1347 lines
35 KiB
Go
1347 lines
35 KiB
Go
package s3
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"crypto/sha256"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"path"
|
|
"path/filepath"
|
|
"sync"
|
|
"time"
|
|
|
|
// Add s3 support.
|
|
"github.com/docker/distribution/registry/storage/driver"
|
|
// Load s3 driver.
|
|
_ "github.com/docker/distribution/registry/storage/driver/s3-aws"
|
|
guuid "github.com/gofrs/uuid"
|
|
godigest "github.com/opencontainers/go-digest"
|
|
ispec "github.com/opencontainers/image-spec/specs-go/v1"
|
|
artifactspec "github.com/oras-project/artifacts-spec/specs-go/v1"
|
|
"github.com/rs/zerolog"
|
|
|
|
zerr "zotregistry.io/zot/errors"
|
|
"zotregistry.io/zot/pkg/extensions/monitoring"
|
|
zlog "zotregistry.io/zot/pkg/log"
|
|
"zotregistry.io/zot/pkg/scheduler"
|
|
"zotregistry.io/zot/pkg/storage"
|
|
"zotregistry.io/zot/pkg/storage/cache"
|
|
storageConstants "zotregistry.io/zot/pkg/storage/constants"
|
|
"zotregistry.io/zot/pkg/test"
|
|
)
|
|
|
|
const (
|
|
CacheDBName = "s3_cache"
|
|
)
|
|
|
|
// ObjectStorage provides the image storage operations.
|
|
type ObjectStorage struct {
|
|
rootDir string
|
|
store driver.StorageDriver
|
|
lock *sync.RWMutex
|
|
blobUploads map[string]storage.BlobUpload
|
|
log zerolog.Logger
|
|
metrics monitoring.MetricServer
|
|
cache cache.Cache
|
|
dedupe bool
|
|
linter storage.Lint
|
|
}
|
|
|
|
func (is *ObjectStorage) RootDir() string {
|
|
return is.rootDir
|
|
}
|
|
|
|
func (is *ObjectStorage) DirExists(d string) bool {
|
|
if fi, err := is.store.Stat(context.Background(), d); err == nil && fi.IsDir() {
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// NewObjectStorage returns a new image store backed by cloud storages.
|
|
// see https://github.com/docker/docker.github.io/tree/master/registry/storage-drivers
|
|
// Use the last argument to properly set a cache database, or it will default to boltDB local storage.
|
|
func NewImageStore(rootDir string, cacheDir string, gc bool, gcDelay time.Duration, dedupe, commit bool,
|
|
log zlog.Logger, metrics monitoring.MetricServer, linter storage.Lint,
|
|
store driver.StorageDriver, cacheDriver cache.Cache,
|
|
) storage.ImageStore {
|
|
imgStore := &ObjectStorage{
|
|
rootDir: rootDir,
|
|
store: store,
|
|
lock: &sync.RWMutex{},
|
|
blobUploads: make(map[string]storage.BlobUpload),
|
|
log: log.With().Caller().Logger(),
|
|
metrics: metrics,
|
|
dedupe: dedupe,
|
|
linter: linter,
|
|
}
|
|
|
|
imgStore.cache = cacheDriver
|
|
|
|
return imgStore
|
|
}
|
|
|
|
// RLock read-lock.
|
|
func (is *ObjectStorage) RLock(lockStart *time.Time) {
|
|
*lockStart = time.Now()
|
|
|
|
is.lock.RLock()
|
|
}
|
|
|
|
// RUnlock read-unlock.
|
|
func (is *ObjectStorage) RUnlock(lockStart *time.Time) {
|
|
is.lock.RUnlock()
|
|
|
|
lockEnd := time.Now()
|
|
// includes time spent in acquiring and holding a lock
|
|
latency := lockEnd.Sub(*lockStart)
|
|
monitoring.ObserveStorageLockLatency(is.metrics, latency, is.RootDir(), storageConstants.RLOCK) // histogram
|
|
}
|
|
|
|
// Lock write-lock.
|
|
func (is *ObjectStorage) Lock(lockStart *time.Time) {
|
|
*lockStart = time.Now()
|
|
|
|
is.lock.Lock()
|
|
}
|
|
|
|
// Unlock write-unlock.
|
|
func (is *ObjectStorage) Unlock(lockStart *time.Time) {
|
|
is.lock.Unlock()
|
|
|
|
lockEnd := time.Now()
|
|
// includes time spent in acquiring and holding a lock
|
|
latency := lockEnd.Sub(*lockStart)
|
|
monitoring.ObserveStorageLockLatency(is.metrics, latency, is.RootDir(), storageConstants.RWLOCK) // histogram
|
|
}
|
|
|
|
func (is *ObjectStorage) initRepo(name string) error {
|
|
repoDir := path.Join(is.rootDir, name)
|
|
|
|
// "oci-layout" file - create if it doesn't exist
|
|
ilPath := path.Join(repoDir, ispec.ImageLayoutFile)
|
|
if _, err := is.store.Stat(context.Background(), ilPath); err != nil {
|
|
il := ispec.ImageLayout{Version: ispec.ImageLayoutVersion}
|
|
|
|
buf, err := json.Marshal(il)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Msg("unable to marshal JSON")
|
|
|
|
return err
|
|
}
|
|
|
|
if _, err := writeFile(is.store, ilPath, buf); err != nil {
|
|
is.log.Error().Err(err).Str("file", ilPath).Msg("unable to write file")
|
|
|
|
return err
|
|
}
|
|
}
|
|
|
|
// "index.json" file - create if it doesn't exist
|
|
indexPath := path.Join(repoDir, "index.json")
|
|
if _, err := is.store.Stat(context.Background(), indexPath); err != nil {
|
|
index := ispec.Index{}
|
|
index.SchemaVersion = 2
|
|
|
|
buf, err := json.Marshal(index)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Msg("unable to marshal JSON")
|
|
|
|
return err
|
|
}
|
|
|
|
if _, err := writeFile(is.store, indexPath, buf); err != nil {
|
|
is.log.Error().Err(err).Str("file", ilPath).Msg("unable to write file")
|
|
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// InitRepo creates an image repository under this store.
|
|
func (is *ObjectStorage) InitRepo(name string) error {
|
|
var lockLatency time.Time
|
|
|
|
is.Lock(&lockLatency)
|
|
defer is.Unlock(&lockLatency)
|
|
|
|
return is.initRepo(name)
|
|
}
|
|
|
|
// ValidateRepo validates that the repository layout is complaint with the OCI repo layout.
|
|
func (is *ObjectStorage) ValidateRepo(name string) (bool, error) {
|
|
// https://github.com/opencontainers/image-spec/blob/master/image-layout.md#content
|
|
// at least, expect at least 3 entries - ["blobs", "oci-layout", "index.json"]
|
|
// and an additional/optional BlobUploadDir in each image store
|
|
// for objects storage we can not create empty dirs, so we check only against index.json and oci-layout
|
|
dir := path.Join(is.rootDir, name)
|
|
if fi, err := is.store.Stat(context.Background(), dir); err != nil || !fi.IsDir() {
|
|
return false, zerr.ErrRepoNotFound
|
|
}
|
|
|
|
files, err := is.store.List(context.Background(), dir)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("dir", dir).Msg("unable to read directory")
|
|
|
|
return false, zerr.ErrRepoNotFound
|
|
}
|
|
|
|
//nolint:gomnd
|
|
if len(files) < 2 {
|
|
return false, zerr.ErrRepoBadVersion
|
|
}
|
|
|
|
found := map[string]bool{
|
|
ispec.ImageLayoutFile: false,
|
|
"index.json": false,
|
|
}
|
|
|
|
for _, file := range files {
|
|
_, err := is.store.Stat(context.Background(), file)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
|
|
filename, err := filepath.Rel(dir, file)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
|
|
found[filename] = true
|
|
}
|
|
|
|
for k, v := range found {
|
|
if !v && k != storageConstants.BlobUploadDir {
|
|
return false, nil
|
|
}
|
|
}
|
|
|
|
buf, err := is.store.GetContent(context.Background(), path.Join(dir, ispec.ImageLayoutFile))
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
|
|
var il ispec.ImageLayout
|
|
if err := json.Unmarshal(buf, &il); err != nil {
|
|
return false, err
|
|
}
|
|
|
|
if il.Version != ispec.ImageLayoutVersion {
|
|
return false, zerr.ErrRepoBadVersion
|
|
}
|
|
|
|
return true, nil
|
|
}
|
|
|
|
// GetRepositories returns a list of all the repositories under this store.
|
|
func (is *ObjectStorage) GetRepositories() ([]string, error) {
|
|
var lockLatency time.Time
|
|
|
|
dir := is.rootDir
|
|
|
|
is.RLock(&lockLatency)
|
|
defer is.RUnlock(&lockLatency)
|
|
|
|
stores := make([]string, 0)
|
|
err := is.store.Walk(context.Background(), dir, func(fileInfo driver.FileInfo) error {
|
|
if !fileInfo.IsDir() {
|
|
return nil
|
|
}
|
|
|
|
rel, err := filepath.Rel(is.rootDir, fileInfo.Path())
|
|
if err != nil {
|
|
return nil //nolint:nilerr // ignore paths that are not under root dir
|
|
}
|
|
|
|
if ok, err := is.ValidateRepo(rel); !ok || err != nil {
|
|
return nil //nolint:nilerr // ignore invalid repos
|
|
}
|
|
|
|
stores = append(stores, rel)
|
|
|
|
return nil
|
|
})
|
|
|
|
// if the root directory is not yet created then return an empty slice of repositories
|
|
var perr driver.PathNotFoundError
|
|
if errors.As(err, &perr) {
|
|
return stores, nil
|
|
}
|
|
|
|
return stores, err
|
|
}
|
|
|
|
// GetNextRepository returns next repository under this store.
|
|
func (is *ObjectStorage) GetNextRepository(repo string) (string, error) {
|
|
return "", nil
|
|
}
|
|
|
|
// GetImageTags returns a list of image tags available in the specified repository.
|
|
func (is *ObjectStorage) GetImageTags(repo string) ([]string, error) {
|
|
dir := path.Join(is.rootDir, repo)
|
|
if fi, err := is.store.Stat(context.Background(), dir); err != nil || !fi.IsDir() {
|
|
return nil, zerr.ErrRepoNotFound
|
|
}
|
|
|
|
index, err := storage.GetIndex(is, repo, is.log)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return storage.GetTagsByIndex(index), nil
|
|
}
|
|
|
|
// GetImageManifest returns the image manifest of an image in the specific repository.
|
|
func (is *ObjectStorage) GetImageManifest(repo, reference string) ([]byte, godigest.Digest, string, error) {
|
|
dir := path.Join(is.rootDir, repo)
|
|
if fi, err := is.store.Stat(context.Background(), dir); err != nil || !fi.IsDir() {
|
|
return nil, "", "", zerr.ErrRepoNotFound
|
|
}
|
|
|
|
index, err := storage.GetIndex(is, repo, is.log)
|
|
if err != nil {
|
|
return nil, "", "", zerr.ErrRepoNotFound
|
|
}
|
|
|
|
manifestDesc, found := storage.GetManifestDescByReference(index, reference)
|
|
if !found {
|
|
return nil, "", "", zerr.ErrManifestNotFound
|
|
}
|
|
|
|
buf, err := is.GetBlobContent(repo, manifestDesc.Digest)
|
|
if err != nil {
|
|
if errors.Is(err, zerr.ErrBlobNotFound) {
|
|
return nil, "", "", zerr.ErrManifestNotFound
|
|
}
|
|
|
|
return nil, "", "", err
|
|
}
|
|
|
|
var manifest ispec.Manifest
|
|
if err := json.Unmarshal(buf, &manifest); err != nil {
|
|
is.log.Error().Err(err).Str("dir", dir).Msg("invalid JSON")
|
|
|
|
return nil, "", "", err
|
|
}
|
|
|
|
monitoring.IncDownloadCounter(is.metrics, repo)
|
|
|
|
return buf, manifestDesc.Digest, manifestDesc.MediaType, nil
|
|
}
|
|
|
|
// PutImageManifest adds an image manifest to the repository.
|
|
func (is *ObjectStorage) PutImageManifest(repo, reference, mediaType string, //nolint: gocyclo
|
|
body []byte,
|
|
) (godigest.Digest, error) {
|
|
if err := is.InitRepo(repo); err != nil {
|
|
is.log.Debug().Err(err).Msg("init repo")
|
|
|
|
return "", err
|
|
}
|
|
|
|
dig, err := storage.ValidateManifest(is, repo, reference, mediaType, body, is.log)
|
|
if err != nil {
|
|
return dig, err
|
|
}
|
|
|
|
refIsDigest := true
|
|
|
|
mDigest, err := storage.GetAndValidateRequestDigest(body, reference, is.log)
|
|
if err != nil {
|
|
if errors.Is(err, zerr.ErrBadManifest) {
|
|
return mDigest, err
|
|
}
|
|
|
|
refIsDigest = false
|
|
}
|
|
|
|
index, err := storage.GetIndex(is, repo, is.log)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
// create a new descriptor
|
|
desc := ispec.Descriptor{
|
|
MediaType: mediaType, Size: int64(len(body)), Digest: mDigest,
|
|
}
|
|
|
|
if !refIsDigest {
|
|
desc.Annotations = map[string]string{ispec.AnnotationRefName: reference}
|
|
}
|
|
|
|
updateIndex, oldDgst, err := storage.CheckIfIndexNeedsUpdate(&index, &desc, is.log)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
if !updateIndex {
|
|
return desc.Digest, nil
|
|
}
|
|
|
|
var lockLatency time.Time
|
|
|
|
is.Lock(&lockLatency)
|
|
defer is.Unlock(&lockLatency)
|
|
|
|
// write manifest to "blobs"
|
|
dir := path.Join(is.rootDir, repo, "blobs", mDigest.Algorithm().String())
|
|
manifestPath := path.Join(dir, mDigest.Encoded())
|
|
|
|
if err = is.store.PutContent(context.Background(), manifestPath, body); err != nil {
|
|
is.log.Error().Err(err).Str("file", manifestPath).Msg("unable to write")
|
|
|
|
return "", err
|
|
}
|
|
|
|
is.Unlock(&lockLatency)
|
|
|
|
err = storage.UpdateIndexWithPrunedImageManifests(is, &index, repo, desc, oldDgst, is.log)
|
|
is.Lock(&lockLatency)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
// now update "index.json"
|
|
index.Manifests = append(index.Manifests, desc)
|
|
dir = path.Join(is.rootDir, repo)
|
|
indexPath := path.Join(dir, "index.json")
|
|
|
|
buf, err := json.Marshal(index)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("file", indexPath).Msg("unable to marshal JSON")
|
|
|
|
return "", err
|
|
}
|
|
|
|
is.Unlock(&lockLatency)
|
|
// apply linter only on images, not signatures
|
|
pass, err := storage.ApplyLinter(is, is.linter, repo, desc)
|
|
is.Lock(&lockLatency)
|
|
if !pass {
|
|
is.log.Error().Err(err).Str("repo", repo).Str("reference", reference).Msg("linter didn't pass")
|
|
|
|
return "", err
|
|
}
|
|
|
|
if err = is.store.PutContent(context.Background(), indexPath, buf); err != nil {
|
|
is.log.Error().Err(err).Str("file", manifestPath).Msg("unable to write")
|
|
|
|
return "", err
|
|
}
|
|
|
|
monitoring.SetStorageUsage(is.metrics, is.rootDir, repo)
|
|
monitoring.IncUploadCounter(is.metrics, repo)
|
|
|
|
return desc.Digest, nil
|
|
}
|
|
|
|
// DeleteImageManifest deletes the image manifest from the repository.
|
|
func (is *ObjectStorage) DeleteImageManifest(repo, reference string, detectCollisions bool) error {
|
|
var lockLatency time.Time
|
|
|
|
dir := path.Join(is.rootDir, repo)
|
|
if fi, err := is.store.Stat(context.Background(), dir); err != nil || !fi.IsDir() {
|
|
return zerr.ErrRepoNotFound
|
|
}
|
|
|
|
index, err := storage.GetIndex(is, repo, is.log)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
manifestDesc, found, err := storage.RemoveManifestDescByReference(&index, reference, detectCollisions)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if !found {
|
|
return zerr.ErrManifestNotFound
|
|
}
|
|
|
|
err = storage.UpdateIndexWithPrunedImageManifests(is, &index, repo, manifestDesc, manifestDesc.Digest, is.log)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
is.Lock(&lockLatency)
|
|
defer is.Unlock(&lockLatency)
|
|
|
|
// now update "index.json"
|
|
dir = path.Join(is.rootDir, repo)
|
|
file := path.Join(dir, "index.json")
|
|
|
|
buf, err := json.Marshal(index)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if _, err := writeFile(is.store, file, buf); err != nil {
|
|
is.log.Debug().Str("deleting reference", reference).Msg("")
|
|
|
|
return err
|
|
}
|
|
|
|
// Delete blob only when blob digest not present in manifest entry.
|
|
// e.g. 1.0.1 & 1.0.2 have same blob digest so if we delete 1.0.1, blob should not be removed.
|
|
toDelete := true
|
|
|
|
for _, manifest := range index.Manifests {
|
|
if manifestDesc.Digest.String() == manifest.Digest.String() {
|
|
toDelete = false
|
|
|
|
break
|
|
}
|
|
}
|
|
|
|
if toDelete {
|
|
p := path.Join(dir, "blobs", manifestDesc.Digest.Algorithm().String(), manifestDesc.Digest.Encoded())
|
|
|
|
err = is.store.Delete(context.Background(), p)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
monitoring.SetStorageUsage(is.metrics, is.rootDir, repo)
|
|
|
|
return nil
|
|
}
|
|
|
|
// BlobUploadPath returns the upload path for a blob in this store.
|
|
func (is *ObjectStorage) BlobUploadPath(repo, uuid string) string {
|
|
dir := path.Join(is.rootDir, repo)
|
|
blobUploadPath := path.Join(dir, storageConstants.BlobUploadDir, uuid)
|
|
|
|
return blobUploadPath
|
|
}
|
|
|
|
// NewBlobUpload returns the unique ID for an upload in progress.
|
|
func (is *ObjectStorage) NewBlobUpload(repo string) (string, error) {
|
|
if err := is.InitRepo(repo); err != nil {
|
|
is.log.Error().Err(err).Msg("error initializing repo")
|
|
|
|
return "", err
|
|
}
|
|
|
|
uuid, err := guuid.NewV4()
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
uid := uuid.String()
|
|
|
|
blobUploadPath := is.BlobUploadPath(repo, uid)
|
|
|
|
// create multipart upload (append false)
|
|
_, err = is.store.Writer(context.Background(), blobUploadPath, false)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
return uid, nil
|
|
}
|
|
|
|
// GetBlobUpload returns the current size of a blob upload.
|
|
func (is *ObjectStorage) GetBlobUpload(repo, uuid string) (int64, error) {
|
|
blobUploadPath := is.BlobUploadPath(repo, uuid)
|
|
|
|
writer, err := is.store.Writer(context.Background(), blobUploadPath, true)
|
|
if err != nil {
|
|
if errors.As(err, &driver.PathNotFoundError{}) {
|
|
return -1, zerr.ErrUploadNotFound
|
|
}
|
|
|
|
return -1, err
|
|
}
|
|
|
|
return writer.Size(), nil
|
|
}
|
|
|
|
// PutBlobChunkStreamed appends another chunk of data to the specified blob. It returns
|
|
// the number of actual bytes to the blob.
|
|
func (is *ObjectStorage) PutBlobChunkStreamed(repo, uuid string, body io.Reader) (int64, error) {
|
|
if err := is.InitRepo(repo); err != nil {
|
|
return -1, err
|
|
}
|
|
|
|
blobUploadPath := is.BlobUploadPath(repo, uuid)
|
|
|
|
file, err := is.store.Writer(context.Background(), blobUploadPath, true)
|
|
if err != nil {
|
|
if errors.As(err, &driver.PathNotFoundError{}) {
|
|
return -1, zerr.ErrUploadNotFound
|
|
}
|
|
|
|
is.log.Error().Err(err).Msg("failed to continue multipart upload")
|
|
|
|
return -1, err
|
|
}
|
|
|
|
defer file.Close()
|
|
|
|
buf := new(bytes.Buffer)
|
|
|
|
_, err = buf.ReadFrom(body)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Msg("failed to read blob")
|
|
|
|
return -1, err
|
|
}
|
|
|
|
nbytes, err := file.Write(buf.Bytes())
|
|
if err != nil {
|
|
is.log.Error().Err(err).Msg("failed to append to file")
|
|
|
|
return -1, err
|
|
}
|
|
|
|
return int64(nbytes), err
|
|
}
|
|
|
|
// PutBlobChunk writes another chunk of data to the specified blob. It returns
|
|
// the number of actual bytes to the blob.
|
|
func (is *ObjectStorage) PutBlobChunk(repo, uuid string, from, to int64,
|
|
body io.Reader,
|
|
) (int64, error) {
|
|
if err := is.InitRepo(repo); err != nil {
|
|
return -1, err
|
|
}
|
|
|
|
blobUploadPath := is.BlobUploadPath(repo, uuid)
|
|
|
|
file, err := is.store.Writer(context.Background(), blobUploadPath, true)
|
|
if err != nil {
|
|
if errors.As(err, &driver.PathNotFoundError{}) {
|
|
return -1, zerr.ErrUploadNotFound
|
|
}
|
|
|
|
is.log.Error().Err(err).Msg("failed to continue multipart upload")
|
|
|
|
return -1, err
|
|
}
|
|
|
|
defer file.Close()
|
|
|
|
if from != file.Size() {
|
|
is.log.Error().Int64("expected", from).Int64("actual", file.Size()).
|
|
Msg("invalid range start for blob upload")
|
|
|
|
return -1, zerr.ErrBadUploadRange
|
|
}
|
|
|
|
buf := new(bytes.Buffer)
|
|
|
|
_, err = buf.ReadFrom(body)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Msg("failed to read blob")
|
|
|
|
return -1, err
|
|
}
|
|
|
|
nbytes, err := file.Write(buf.Bytes())
|
|
if err != nil {
|
|
is.log.Error().Err(err).Msg("failed to append to file")
|
|
|
|
return -1, err
|
|
}
|
|
|
|
return int64(nbytes), err
|
|
}
|
|
|
|
// BlobUploadInfo returns the current blob size in bytes.
|
|
func (is *ObjectStorage) BlobUploadInfo(repo, uuid string) (int64, error) {
|
|
blobUploadPath := is.BlobUploadPath(repo, uuid)
|
|
|
|
writer, err := is.store.Writer(context.Background(), blobUploadPath, true)
|
|
if err != nil {
|
|
if errors.As(err, &driver.PathNotFoundError{}) {
|
|
return -1, zerr.ErrUploadNotFound
|
|
}
|
|
|
|
return -1, err
|
|
}
|
|
|
|
return writer.Size(), nil
|
|
}
|
|
|
|
// FinishBlobUpload finalizes the blob upload and moves blob the repository.
|
|
func (is *ObjectStorage) FinishBlobUpload(repo, uuid string, body io.Reader, dstDigest godigest.Digest) error {
|
|
if err := dstDigest.Validate(); err != nil {
|
|
return err
|
|
}
|
|
|
|
src := is.BlobUploadPath(repo, uuid)
|
|
|
|
// complete multiUploadPart
|
|
fileWriter, err := is.store.Writer(context.Background(), src, true)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", src).Msg("failed to open blob")
|
|
|
|
return zerr.ErrBadBlobDigest
|
|
}
|
|
|
|
defer fileWriter.Close()
|
|
|
|
if err := fileWriter.Commit(); err != nil {
|
|
is.log.Error().Err(err).Msg("failed to commit file")
|
|
|
|
return err
|
|
}
|
|
|
|
if err := fileWriter.Close(); err != nil {
|
|
is.log.Error().Err(err).Msg("failed to close file")
|
|
}
|
|
|
|
fileReader, err := is.store.Reader(context.Background(), src, 0)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", src).Msg("failed to open file")
|
|
|
|
return zerr.ErrUploadNotFound
|
|
}
|
|
|
|
srcDigest, err := godigest.FromReader(fileReader)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", src).Msg("failed to open blob")
|
|
|
|
return zerr.ErrBadBlobDigest
|
|
}
|
|
|
|
if srcDigest != dstDigest {
|
|
is.log.Error().Str("srcDigest", srcDigest.String()).
|
|
Str("dstDigest", dstDigest.String()).Msg("actual digest not equal to expected digest")
|
|
|
|
return zerr.ErrBadBlobDigest
|
|
}
|
|
|
|
fileReader.Close()
|
|
|
|
dst := is.BlobPath(repo, dstDigest)
|
|
|
|
var lockLatency time.Time
|
|
|
|
is.Lock(&lockLatency)
|
|
defer is.Unlock(&lockLatency)
|
|
|
|
if is.dedupe && fmt.Sprintf("%v", is.cache) != fmt.Sprintf("%v", nil) {
|
|
if err := is.DedupeBlob(src, dstDigest, dst); err != nil {
|
|
is.log.Error().Err(err).Str("src", src).Str("dstDigest", dstDigest.String()).
|
|
Str("dst", dst).Msg("unable to dedupe blob")
|
|
|
|
return err
|
|
}
|
|
} else {
|
|
if err := is.store.Move(context.Background(), src, dst); err != nil {
|
|
is.log.Error().Err(err).Str("src", src).Str("dstDigest", dstDigest.String()).
|
|
Str("dst", dst).Msg("unable to finish blob")
|
|
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// FullBlobUpload handles a full blob upload, and no partial session is created.
|
|
func (is *ObjectStorage) FullBlobUpload(repo string, body io.Reader, dstDigest godigest.Digest) (string, int64, error) {
|
|
if err := dstDigest.Validate(); err != nil {
|
|
return "", -1, err
|
|
}
|
|
|
|
if err := is.InitRepo(repo); err != nil {
|
|
return "", -1, err
|
|
}
|
|
|
|
u, err := guuid.NewV4()
|
|
if err != nil {
|
|
return "", -1, err
|
|
}
|
|
|
|
uuid := u.String()
|
|
src := is.BlobUploadPath(repo, uuid)
|
|
digester := sha256.New()
|
|
buf := new(bytes.Buffer)
|
|
|
|
_, err = buf.ReadFrom(body)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Msg("failed to read blob")
|
|
|
|
return "", -1, err
|
|
}
|
|
|
|
nbytes, err := writeFile(is.store, src, buf.Bytes())
|
|
if err != nil {
|
|
is.log.Error().Err(err).Msg("failed to write blob")
|
|
|
|
return "", -1, err
|
|
}
|
|
|
|
_, err = digester.Write(buf.Bytes())
|
|
if err != nil {
|
|
is.log.Error().Err(err).Msg("digester failed to write")
|
|
|
|
return "", -1, err
|
|
}
|
|
|
|
srcDigest := godigest.NewDigestFromEncoded(godigest.SHA256, fmt.Sprintf("%x", digester.Sum(nil)))
|
|
if srcDigest != dstDigest {
|
|
is.log.Error().Str("srcDigest", srcDigest.String()).
|
|
Str("dstDigest", dstDigest.String()).Msg("actual digest not equal to expected digest")
|
|
|
|
return "", -1, zerr.ErrBadBlobDigest
|
|
}
|
|
|
|
var lockLatency time.Time
|
|
|
|
is.Lock(&lockLatency)
|
|
defer is.Unlock(&lockLatency)
|
|
|
|
dst := is.BlobPath(repo, dstDigest)
|
|
|
|
if is.dedupe && fmt.Sprintf("%v", is.cache) != fmt.Sprintf("%v", nil) {
|
|
if err := is.DedupeBlob(src, dstDigest, dst); err != nil {
|
|
is.log.Error().Err(err).Str("src", src).Str("dstDigest", dstDigest.String()).
|
|
Str("dst", dst).Msg("unable to dedupe blob")
|
|
|
|
return "", -1, err
|
|
}
|
|
} else {
|
|
if err := is.store.Move(context.Background(), src, dst); err != nil {
|
|
is.log.Error().Err(err).Str("src", src).Str("dstDigest", dstDigest.String()).
|
|
Str("dst", dst).Msg("unable to finish blob")
|
|
|
|
return "", -1, err
|
|
}
|
|
}
|
|
|
|
return uuid, int64(nbytes), nil
|
|
}
|
|
|
|
func (is *ObjectStorage) DedupeBlob(src string, dstDigest godigest.Digest, dst string) error {
|
|
retry:
|
|
is.log.Debug().Str("src", src).Str("dstDigest", dstDigest.String()).Str("dst", dst).Msg("dedupe: enter")
|
|
|
|
dstRecord, err := is.cache.GetBlob(dstDigest)
|
|
if err := test.Error(err); err != nil && !errors.Is(err, zerr.ErrCacheMiss) {
|
|
is.log.Error().Err(err).Str("blobPath", dst).Msg("dedupe: unable to lookup blob record")
|
|
|
|
return err
|
|
}
|
|
|
|
if dstRecord == "" {
|
|
// cache record doesn't exist, so first disk and cache entry for this digest
|
|
if err := is.cache.PutBlob(dstDigest, dst); err != nil {
|
|
is.log.Error().Err(err).Str("blobPath", dst).Msg("dedupe: unable to insert blob record")
|
|
|
|
return err
|
|
}
|
|
|
|
// move the blob from uploads to final dest
|
|
if err := is.store.Move(context.Background(), src, dst); err != nil {
|
|
is.log.Error().Err(err).Str("src", src).Str("dst", dst).Msg("dedupe: unable to rename blob")
|
|
|
|
return err
|
|
}
|
|
|
|
is.log.Debug().Str("src", src).Str("dst", dst).Msg("dedupe: rename")
|
|
} else {
|
|
// cache record exists, but due to GC and upgrades from older versions,
|
|
// disk content and cache records may go out of sync
|
|
_, err := is.store.Stat(context.Background(), dstRecord)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blobPath", dstRecord).Msg("dedupe: unable to stat")
|
|
// the actual blob on disk may have been removed by GC, so sync the cache
|
|
err := is.cache.DeleteBlob(dstDigest, dstRecord)
|
|
if err = test.Error(err); err != nil {
|
|
//nolint:lll
|
|
is.log.Error().Err(err).Str("dstDigest", dstDigest.String()).Str("dst", dst).Msg("dedupe: unable to delete blob record")
|
|
|
|
return err
|
|
}
|
|
|
|
goto retry
|
|
}
|
|
|
|
fileInfo, err := is.store.Stat(context.Background(), dst)
|
|
if err != nil && !errors.As(err, &driver.PathNotFoundError{}) {
|
|
is.log.Error().Err(err).Str("blobPath", dstRecord).Msg("dedupe: unable to stat")
|
|
|
|
return err
|
|
}
|
|
|
|
// prevent overwrite original blob
|
|
if fileInfo == nil && dstRecord != dst {
|
|
// put empty file so that we are compliant with oci layout, this will act as a deduped blob
|
|
err = is.store.PutContent(context.Background(), dst, []byte{})
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blobPath", dstRecord).Msg("dedupe: unable to write empty file")
|
|
|
|
return err
|
|
}
|
|
|
|
if err := is.cache.PutBlob(dstDigest, dst); err != nil {
|
|
is.log.Error().Err(err).Str("blobPath", dst).Msg("dedupe: unable to insert blob record")
|
|
|
|
return err
|
|
}
|
|
}
|
|
|
|
// remove temp blobupload
|
|
if err := is.store.Delete(context.Background(), src); err != nil {
|
|
is.log.Error().Err(err).Str("src", src).Msg("dedupe: unable to remove blob")
|
|
|
|
return err
|
|
}
|
|
|
|
is.log.Debug().Str("src", src).Msg("dedupe: remove")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (is *ObjectStorage) RunGCRepo(repo string) error {
|
|
return nil
|
|
}
|
|
|
|
func (is *ObjectStorage) RunGCPeriodically(interval time.Duration, sch *scheduler.Scheduler) {
|
|
}
|
|
|
|
// DeleteBlobUpload deletes an existing blob upload that is currently in progress.
|
|
func (is *ObjectStorage) DeleteBlobUpload(repo, uuid string) error {
|
|
blobUploadPath := is.BlobUploadPath(repo, uuid)
|
|
|
|
writer, err := is.store.Writer(context.Background(), blobUploadPath, true)
|
|
if err != nil {
|
|
if errors.As(err, &driver.PathNotFoundError{}) {
|
|
return zerr.ErrUploadNotFound
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
defer writer.Close()
|
|
|
|
if err := writer.Cancel(); err != nil {
|
|
is.log.Error().Err(err).Str("blobUploadPath", blobUploadPath).Msg("error deleting blob upload")
|
|
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// BlobPath returns the repository path of a blob.
|
|
func (is *ObjectStorage) BlobPath(repo string, digest godigest.Digest) string {
|
|
return path.Join(is.rootDir, repo, "blobs", digest.Algorithm().String(), digest.Encoded())
|
|
}
|
|
|
|
// CheckBlob verifies a blob and returns true if the blob is correct.
|
|
func (is *ObjectStorage) CheckBlob(repo string, digest godigest.Digest) (bool, int64, error) {
|
|
var lockLatency time.Time
|
|
|
|
if err := digest.Validate(); err != nil {
|
|
return false, -1, err
|
|
}
|
|
|
|
blobPath := is.BlobPath(repo, digest)
|
|
|
|
if is.dedupe && fmt.Sprintf("%v", is.cache) != fmt.Sprintf("%v", nil) {
|
|
is.Lock(&lockLatency)
|
|
defer is.Unlock(&lockLatency)
|
|
} else {
|
|
is.RLock(&lockLatency)
|
|
defer is.RUnlock(&lockLatency)
|
|
}
|
|
|
|
binfo, err := is.store.Stat(context.Background(), blobPath)
|
|
if err == nil && binfo.Size() > 0 {
|
|
is.log.Debug().Str("blob path", blobPath).Msg("blob path found")
|
|
|
|
return true, binfo.Size(), nil
|
|
}
|
|
// otherwise is a 'deduped' blob (empty file)
|
|
|
|
// Check blobs in cache
|
|
dstRecord, err := is.checkCacheBlob(digest)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("digest", digest.String()).Msg("cache: not found")
|
|
|
|
return false, -1, zerr.ErrBlobNotFound
|
|
}
|
|
|
|
blobSize, err := is.copyBlob(repo, blobPath, dstRecord)
|
|
if err != nil {
|
|
return false, -1, zerr.ErrBlobNotFound
|
|
}
|
|
|
|
// put deduped blob in cache
|
|
if err := is.cache.PutBlob(digest, blobPath); err != nil {
|
|
is.log.Error().Err(err).Str("blobPath", blobPath).Msg("dedupe: unable to insert blob record")
|
|
|
|
return false, -1, err
|
|
}
|
|
|
|
return true, blobSize, nil
|
|
}
|
|
|
|
func (is *ObjectStorage) checkCacheBlob(digest godigest.Digest) (string, error) {
|
|
if err := digest.Validate(); err != nil {
|
|
return "", err
|
|
}
|
|
|
|
if fmt.Sprintf("%v", is.cache) == fmt.Sprintf("%v", nil) {
|
|
return "", zerr.ErrBlobNotFound
|
|
}
|
|
|
|
dstRecord, err := is.cache.GetBlob(digest)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
if _, err := is.store.Stat(context.Background(), dstRecord); err != nil {
|
|
is.log.Error().Err(err).Str("blob", dstRecord).Msg("failed to stat blob")
|
|
|
|
// the actual blob on disk may have been removed by GC, so sync the cache
|
|
if err := is.cache.DeleteBlob(digest, dstRecord); err != nil {
|
|
is.log.Error().Err(err).Str("digest", digest.String()).Str("blobPath", dstRecord).
|
|
Msg("unable to remove blob path from cache")
|
|
|
|
return "", err
|
|
}
|
|
|
|
return "", zerr.ErrBlobNotFound
|
|
}
|
|
|
|
is.log.Debug().Str("digest", digest.String()).Str("dstRecord", dstRecord).Msg("cache: found dedupe record")
|
|
|
|
return dstRecord, nil
|
|
}
|
|
|
|
func (is *ObjectStorage) copyBlob(repo string, blobPath string, dstRecord string) (int64, error) {
|
|
if err := is.initRepo(repo); err != nil {
|
|
is.log.Error().Err(err).Str("repo", repo).Msg("unable to initialize an empty repo")
|
|
|
|
return -1, err
|
|
}
|
|
|
|
if err := is.store.PutContent(context.Background(), blobPath, []byte{}); err != nil {
|
|
is.log.Error().Err(err).Str("blobPath", blobPath).Str("link", dstRecord).Msg("dedupe: unable to link")
|
|
|
|
return -1, zerr.ErrBlobNotFound
|
|
}
|
|
|
|
// return original blob with content instead of the deduped one (blobPath)
|
|
binfo, err := is.store.Stat(context.Background(), dstRecord)
|
|
if err == nil {
|
|
return binfo.Size(), nil
|
|
}
|
|
|
|
return -1, zerr.ErrBlobNotFound
|
|
}
|
|
|
|
// blobStream is using to serve blob range requests.
|
|
type blobStream struct {
|
|
reader io.Reader
|
|
closer io.Closer
|
|
}
|
|
|
|
func NewBlobStream(readCloser io.ReadCloser, from, to int64) (io.ReadCloser, error) {
|
|
return &blobStream{reader: io.LimitReader(readCloser, to-from+1), closer: readCloser}, nil
|
|
}
|
|
|
|
func (bs *blobStream) Read(buf []byte) (int, error) {
|
|
return bs.reader.Read(buf)
|
|
}
|
|
|
|
func (bs *blobStream) Close() error {
|
|
return bs.closer.Close()
|
|
}
|
|
|
|
// GetBlobPartial returns a partial stream to read the blob.
|
|
// blob selector instead of directly downloading the blob.
|
|
func (is *ObjectStorage) GetBlobPartial(repo string, digest godigest.Digest, mediaType string, from, to int64,
|
|
) (io.ReadCloser, int64, int64, error) {
|
|
var lockLatency time.Time
|
|
|
|
if err := digest.Validate(); err != nil {
|
|
return nil, -1, -1, err
|
|
}
|
|
|
|
blobPath := is.BlobPath(repo, digest)
|
|
|
|
is.RLock(&lockLatency)
|
|
defer is.RUnlock(&lockLatency)
|
|
|
|
binfo, err := is.store.Stat(context.Background(), blobPath)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", blobPath).Msg("failed to stat blob")
|
|
|
|
return nil, -1, -1, zerr.ErrBlobNotFound
|
|
}
|
|
|
|
end := to
|
|
|
|
if to < 0 || to >= binfo.Size() {
|
|
end = binfo.Size() - 1
|
|
}
|
|
|
|
blobHandle, err := is.store.Reader(context.Background(), blobPath, from)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", blobPath).Msg("failed to open blob")
|
|
|
|
return nil, -1, -1, err
|
|
}
|
|
|
|
blobReadCloser, err := NewBlobStream(blobHandle, from, end)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", blobPath).Msg("failed to open blob stream")
|
|
|
|
return nil, -1, -1, err
|
|
}
|
|
|
|
// is a 'deduped' blob?
|
|
if binfo.Size() == 0 {
|
|
defer blobReadCloser.Close()
|
|
|
|
// Check blobs in cache
|
|
dstRecord, err := is.checkCacheBlob(digest)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("digest", digest.String()).Msg("cache: not found")
|
|
|
|
return nil, -1, -1, zerr.ErrBlobNotFound
|
|
}
|
|
|
|
binfo, err := is.store.Stat(context.Background(), dstRecord)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", dstRecord).Msg("failed to stat blob")
|
|
|
|
return nil, -1, -1, zerr.ErrBlobNotFound
|
|
}
|
|
|
|
end := to
|
|
|
|
if to < 0 || to >= binfo.Size() {
|
|
end = binfo.Size() - 1
|
|
}
|
|
|
|
blobHandle, err := is.store.Reader(context.Background(), dstRecord, from)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", dstRecord).Msg("failed to open blob")
|
|
|
|
return nil, -1, -1, err
|
|
}
|
|
|
|
blobReadCloser, err := NewBlobStream(blobHandle, from, end)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", blobPath).Msg("failed to open blob stream")
|
|
|
|
return nil, -1, -1, err
|
|
}
|
|
|
|
return blobReadCloser, end - from + 1, binfo.Size(), nil
|
|
}
|
|
|
|
// The caller function is responsible for calling Close()
|
|
return blobReadCloser, end - from + 1, binfo.Size(), nil
|
|
}
|
|
|
|
// GetBlob returns a stream to read the blob.
|
|
// blob selector instead of directly downloading the blob.
|
|
func (is *ObjectStorage) GetBlob(repo string, digest godigest.Digest, mediaType string) (io.ReadCloser, int64, error) {
|
|
var lockLatency time.Time
|
|
|
|
if err := digest.Validate(); err != nil {
|
|
return nil, -1, err
|
|
}
|
|
|
|
blobPath := is.BlobPath(repo, digest)
|
|
|
|
is.RLock(&lockLatency)
|
|
defer is.RUnlock(&lockLatency)
|
|
|
|
binfo, err := is.store.Stat(context.Background(), blobPath)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", blobPath).Msg("failed to stat blob")
|
|
|
|
return nil, -1, zerr.ErrBlobNotFound
|
|
}
|
|
|
|
blobReadCloser, err := is.store.Reader(context.Background(), blobPath, 0)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", blobPath).Msg("failed to open blob")
|
|
|
|
return nil, -1, err
|
|
}
|
|
|
|
// is a 'deduped' blob?
|
|
if binfo.Size() == 0 && fmt.Sprintf("%v", is.cache) != fmt.Sprintf("%v", nil) {
|
|
// Check blobs in cache
|
|
dstRecord, err := is.checkCacheBlob(digest)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("digest", digest.String()).Msg("cache: not found")
|
|
|
|
return nil, -1, zerr.ErrBlobNotFound
|
|
}
|
|
|
|
binfo, err := is.store.Stat(context.Background(), dstRecord)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", dstRecord).Msg("failed to stat blob")
|
|
|
|
return nil, -1, zerr.ErrBlobNotFound
|
|
}
|
|
|
|
blobReadCloser, err := is.store.Reader(context.Background(), dstRecord, 0)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", dstRecord).Msg("failed to open blob")
|
|
|
|
return nil, -1, err
|
|
}
|
|
|
|
return blobReadCloser, binfo.Size(), nil
|
|
}
|
|
|
|
// The caller function is responsible for calling Close()
|
|
return blobReadCloser, binfo.Size(), nil
|
|
}
|
|
|
|
func (is *ObjectStorage) GetBlobContent(repo string, digest godigest.Digest) ([]byte, error) {
|
|
blob, _, err := is.GetBlob(repo, digest, ispec.MediaTypeImageManifest)
|
|
if err != nil {
|
|
return []byte{}, err
|
|
}
|
|
defer blob.Close()
|
|
|
|
buf := new(bytes.Buffer)
|
|
|
|
_, err = buf.ReadFrom(blob)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Msg("failed to read blob")
|
|
|
|
return []byte{}, err
|
|
}
|
|
|
|
return buf.Bytes(), nil
|
|
}
|
|
|
|
func (is *ObjectStorage) GetReferrers(repo string, gdigest godigest.Digest, artifactType string,
|
|
) (ispec.Index, error) {
|
|
return storage.GetReferrers(is, repo, gdigest, artifactType, is.log)
|
|
}
|
|
|
|
func (is *ObjectStorage) GetOrasReferrers(repo string, gdigest godigest.Digest, artifactType string,
|
|
) ([]artifactspec.Descriptor, error) {
|
|
return storage.GetOrasReferrers(is, repo, gdigest, artifactType, is.log)
|
|
}
|
|
|
|
func (is *ObjectStorage) GetIndexContent(repo string) ([]byte, error) {
|
|
var lockLatency time.Time
|
|
|
|
dir := path.Join(is.rootDir, repo)
|
|
|
|
is.RLock(&lockLatency)
|
|
defer is.RUnlock(&lockLatency)
|
|
|
|
buf, err := is.store.GetContent(context.Background(), path.Join(dir, "index.json"))
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("dir", dir).Msg("failed to read index.json")
|
|
|
|
return []byte{}, zerr.ErrRepoNotFound
|
|
}
|
|
|
|
return buf, nil
|
|
}
|
|
|
|
// DeleteBlob removes the blob from the repository.
|
|
func (is *ObjectStorage) DeleteBlob(repo string, digest godigest.Digest) error {
|
|
var lockLatency time.Time
|
|
|
|
if err := digest.Validate(); err != nil {
|
|
return err
|
|
}
|
|
|
|
blobPath := is.BlobPath(repo, digest)
|
|
|
|
is.Lock(&lockLatency)
|
|
defer is.Unlock(&lockLatency)
|
|
|
|
_, err := is.store.Stat(context.Background(), blobPath)
|
|
if err != nil {
|
|
is.log.Error().Err(err).Str("blob", blobPath).Msg("failed to stat blob")
|
|
|
|
return zerr.ErrBlobNotFound
|
|
}
|
|
|
|
if fmt.Sprintf("%v", is.cache) != fmt.Sprintf("%v", nil) {
|
|
dstRecord, err := is.cache.GetBlob(digest)
|
|
if err != nil && !errors.Is(err, zerr.ErrCacheMiss) {
|
|
is.log.Error().Err(err).Str("blobPath", dstRecord).Msg("dedupe: unable to lookup blob record")
|
|
|
|
return err
|
|
}
|
|
|
|
// remove cache entry and move blob contents to the next candidate if there is any
|
|
if err := is.cache.DeleteBlob(digest, blobPath); err != nil {
|
|
is.log.Error().Err(err).Str("digest", digest.String()).Str("blobPath", blobPath).
|
|
Msg("unable to remove blob path from cache")
|
|
|
|
return err
|
|
}
|
|
|
|
// if the deleted blob is one with content
|
|
if dstRecord == blobPath {
|
|
// get next candidate
|
|
dstRecord, err := is.cache.GetBlob(digest)
|
|
if err != nil && !errors.Is(err, zerr.ErrCacheMiss) {
|
|
is.log.Error().Err(err).Str("blobPath", dstRecord).Msg("dedupe: unable to lookup blob record")
|
|
|
|
return err
|
|
}
|
|
|
|
// if we have a new candidate move the blob content to it
|
|
if dstRecord != "" {
|
|
if err := is.store.Move(context.Background(), blobPath, dstRecord); err != nil {
|
|
is.log.Error().Err(err).Str("blobPath", blobPath).Msg("unable to remove blob path")
|
|
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
}
|
|
}
|
|
|
|
if err := is.store.Delete(context.Background(), blobPath); err != nil {
|
|
is.log.Error().Err(err).Str("blobPath", blobPath).Msg("unable to remove blob path")
|
|
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// Do not use for multipart upload, buf must not be empty.
|
|
// If you want to create an empty file use is.store.PutContent().
|
|
func writeFile(store driver.StorageDriver, filepath string, buf []byte) (int, error) {
|
|
var n int
|
|
|
|
if stwr, err := store.Writer(context.Background(), filepath, false); err == nil {
|
|
defer stwr.Close()
|
|
|
|
if n, err = stwr.Write(buf); err != nil {
|
|
return -1, err
|
|
}
|
|
|
|
if err := stwr.Commit(); err != nil {
|
|
return -1, err
|
|
}
|
|
} else {
|
|
return -1, err
|
|
}
|
|
|
|
return n, nil
|
|
}
|