Beispiel #1
0
// 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
}
Beispiel #2
0
// 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
}
Beispiel #3
0
// 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
}