// newMultipartUpload - new multipart upload request
func (xl API) newMultipartUpload(bucket, object, contentType string) (string, *probe.Error) {
if err := xl.listXLBuckets(); err != nil {
return "", err.Trace()
}
if _, ok := xl.buckets[bucket]; !ok {
return "", probe.NewError(BucketNotFound{Bucket: bucket})
}
allbuckets, err := xl.getXLBucketMetadata()
if err != nil {
return "", err.Trace()
}
bucketMetadata := allbuckets.Buckets[bucket]
multiparts := make(map[string]MultiPartSession)
if len(bucketMetadata.Multiparts) > 0 {
multiparts = bucketMetadata.Multiparts
}
id := []byte(strconv.Itoa(rand.Int()) + bucket + object + time.Now().String())
uploadIDSum := sha512.Sum512(id)
uploadID := base64.URLEncoding.EncodeToString(uploadIDSum[:])[:47]
multipartSession := MultiPartSession{
UploadID: uploadID,
Initiated: time.Now().UTC(),
Parts: make(map[string]PartMetadata),
TotalParts: 0,
}
multiparts[object] = multipartSession
bucketMetadata.Multiparts = multiparts
allbuckets.Buckets[bucket] = bucketMetadata
if err := xl.setXLBucketMetadata(allbuckets); err != nil {
return "", err.Trace()
}
return uploadID, nil
}
// NewMultipartUpload - initiate a new multipart session
func (fs Filesystem) NewMultipartUpload(bucket, object string) (string, *probe.Error) {
fs.lock.Lock()
defer fs.lock.Unlock()
di, e := disk.GetInfo(fs.path)
if e != nil {
return "", probe.NewError(e)
}
// Remove 5% from total space for cumulative disk space used for journalling, inodes etc.
availableDiskSpace := (float64(di.Free) / (float64(di.Total) - (0.05 * float64(di.Total)))) * 100
if int64(availableDiskSpace) <= fs.minFreeDisk {
return "", probe.NewError(RootPathFull{Path: fs.path})
}
if !IsValidBucketName(bucket) {
return "", probe.NewError(BucketNameInvalid{Bucket: bucket})
}
if !IsValidObjectName(object) {
return "", probe.NewError(ObjectNameInvalid{Object: object})
}
bucket = fs.denormalizeBucket(bucket)
bucketPath := filepath.Join(fs.path, bucket)
if _, e = os.Stat(bucketPath); e != nil {
// check bucket exists
if os.IsNotExist(e) {
return "", probe.NewError(BucketNotFound{Bucket: bucket})
}
return "", probe.NewError(e)
}
objectPath := filepath.Join(bucketPath, object)
objectDir := filepath.Dir(objectPath)
if _, e = os.Stat(objectDir); e != nil {
if !os.IsNotExist(e) {
return "", probe.NewError(e)
}
e = os.MkdirAll(objectDir, 0700)
if e != nil {
return "", probe.NewError(e)
}
}
id := []byte(strconv.FormatInt(rand.Int63(), 10) + bucket + object + time.Now().String())
uploadIDSum := sha512.Sum512(id)
uploadID := base64.URLEncoding.EncodeToString(uploadIDSum[:])[:47]
multiPartfile, e := os.OpenFile(objectPath+"$multiparts", os.O_WRONLY|os.O_CREATE, 0600)
if e != nil {
return "", probe.NewError(e)
}
defer multiPartfile.Close()
mpartSession := &MultipartSession{}
mpartSession.TotalParts = 0
mpartSession.UploadID = uploadID
mpartSession.Initiated = time.Now().UTC()
var parts []*PartMetadata
mpartSession.Parts = parts
fs.multiparts.ActiveSession[object] = mpartSession
encoder := json.NewEncoder(multiPartfile)
if e = encoder.Encode(mpartSession); e != nil {
return "", probe.NewError(e)
}
if err := saveMultipartsSession(fs.multiparts); err != nil {
return "", err.Trace()
}
return uploadID, nil
}
// NewMultipartUpload - initiate a new multipart session
func (fs Filesystem) NewMultipartUpload(bucket, object string) (string, *probe.Error) {
di, e := disk.GetInfo(fs.path)
if e != nil {
return "", probe.NewError(e)
}
// Remove 5% from total space for cumulative disk space used for
// journalling, inodes etc.
availableDiskSpace := (float64(di.Free) / (float64(di.Total) - (0.05 * float64(di.Total)))) * 100
if int64(availableDiskSpace) <= fs.minFreeDisk {
return "", probe.NewError(RootPathFull{Path: fs.path})
}
// Input validation.
if !IsValidBucketName(bucket) {
return "", probe.NewError(BucketNameInvalid{Bucket: bucket})
}
if !IsValidObjectName(object) {
return "", probe.NewError(ObjectNameInvalid{Object: object})
}
bucket = fs.denormalizeBucket(bucket)
bucketPath := filepath.Join(fs.path, bucket)
if _, e = os.Stat(bucketPath); e != nil {
// Check bucket exists.
if os.IsNotExist(e) {
return "", probe.NewError(BucketNotFound{Bucket: bucket})
}
return "", probe.NewError(e)
}
objectPath := filepath.Join(bucketPath, object)
objectDir := filepath.Dir(objectPath)
if _, e = os.Stat(objectDir); e != nil {
if !os.IsNotExist(e) {
return "", probe.NewError(e)
}
e = os.MkdirAll(objectDir, 0700)
if e != nil {
return "", probe.NewError(e)
}
}
// Generate new upload id.
id := []byte(strconv.FormatInt(rand.Int63(), 10) + bucket + object + time.Now().String())
uploadIDSum := sha512.Sum512(id)
uploadID := base64.URLEncoding.EncodeToString(uploadIDSum[:])[:47]
// Critical region requiring write lock.
fs.rwLock.Lock()
// Initialize multipart session.
mpartSession := &MultipartSession{}
mpartSession.TotalParts = 0
mpartSession.ObjectName = object
mpartSession.UploadID = uploadID
mpartSession.Initiated = time.Now().UTC()
var parts []PartMetadata
mpartSession.Parts = parts
fs.multiparts.ActiveSession[uploadID] = mpartSession
if err := saveMultipartsSession(*fs.multiparts); err != nil {
fs.rwLock.Unlock()
return "", err.Trace(objectPath)
}
fs.rwLock.Unlock()
return uploadID, nil
}