Add listparts support

pkg/api/api_definitions.go

@@ -55,6 +55,29 @@ type ListObjectsResponse struct {
 	Prefix     string
 }
 
+// ListPartsResponse - format for list parts response
+type ListPartsResponse struct {
+	XMLName xml.Name `xml:"http://doc.s3.amazonaws.com/2006-03-01 ListPartsResult" json:"-"`
+
+	Bucket   string
+	Key      string
+	UploadID string `xml:"UploadId"`
+
+	Initiator Initiator
+	Owner     Owner
+
+	// The class of storage used to store the object.
+	StorageClass string
+
+	PartNumberMarker     int
+	NextPartNumberMarker int
+	MaxParts             int
+	IsTruncated          bool
+
+	// List of parts
+	Part []*Part
+}
+
 // ListBucketsResponse - format for list buckets response
 type ListBucketsResponse struct {
 	XMLName xml.Name `xml:"http://doc.s3.amazonaws.com/2006-03-01 ListAllMyBucketsResult" json:"-"`
@@ -76,6 +99,14 @@ type Bucket struct {
 	CreationDate string
 }
 
+// Part container for part metadata
+type Part struct {
+	PartNumber   int
+	ETag         string
+	LastModified string
+	Size         int64
+}
+
 // Object container for object metadata
 type Object struct {
 	ETag         string
@@ -89,6 +120,9 @@ type Object struct {
 	StorageClass string
 }
 
+// Initiator inherit from Owner struct, fields are same
+type Initiator Owner
+
 // Owner - bucket owner/principal
 type Owner struct {
 	ID          string
@@ -126,12 +160,6 @@ type CompleteMultipartUploadResult struct {
 	ETag     string
 }
 
-// Part description of a multipart part
-type Part struct {
-	PartNumber int
-	ETag       string
-}
-
 // List of not implemented bucket queries
 var notimplementedBucketResourceNames = map[string]bool{
 	"policy":         true,

pkg/api/api_object_handlers.go

@@ -345,6 +345,37 @@ func (server *minioAPI) putObjectPartHandler(w http.ResponseWriter, req *http.Re
 	}
 }
 
+func (server *minioAPI) listObjectPartsHandler(w http.ResponseWriter, req *http.Request) {
+	acceptsContentType := getContentType(req)
+	if acceptsContentType == unknownContentType {
+		writeErrorResponse(w, req, NotAcceptable, acceptsContentType, req.URL.Path)
+		return
+	}
+	vars := mux.Vars(req)
+	bucket := vars["bucket"]
+	object := vars["object"]
+	uploadID := vars["uploadId"]
+
+	objectResourcesMetadata, err := server.driver.ListObjectParts(bucket, object, uploadID)
+	switch err := iodine.ToError(err).(type) {
+	case nil:
+		response := generateListPartsResult(objectResourcesMetadata)
+		encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
+		// write headers
+		setCommonHeaders(w, getContentTypeString(acceptsContentType))
+		// set content-length to the size of the body
+		w.Header().Set("Content-Length", strconv.Itoa(len(encodedSuccessResponse)))
+		w.WriteHeader(http.StatusOK)
+		// write body
+		w.Write(encodedSuccessResponse)
+	case drivers.InvalidUploadID:
+		writeErrorResponse(w, req, NoSuchUpload, acceptsContentType, req.URL.Path)
+	default:
+		log.Println(err)
+		writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
+	}
+}
+
 func (server *minioAPI) completeMultipartUploadHandler(w http.ResponseWriter, req *http.Request) {
 	acceptsContentType := getContentType(req)
 	if acceptsContentType == unknownContentType {

pkg/api/api_response.go

@@ -112,6 +112,7 @@ func generateListObjectsResponse(bucket string, objects []drivers.ObjectMetadata
 	return data
 }
 
+// generateInitiateMultipartUploadResult
 func generateInitiateMultipartUploadResult(bucket, key, uploadID string) InitiateMultipartUploadResult {
 	return InitiateMultipartUploadResult{
 		Bucket:   bucket,
@@ -120,6 +121,7 @@ func generateInitiateMultipartUploadResult(bucket, key, uploadID string) Initiat
 	}
 }
 
+// generateCompleteMultipartUploadResult
 func generateCompleteMultpartUploadResult(bucket, key, location, etag string) CompleteMultipartUploadResult {
 	return CompleteMultipartUploadResult{
 		Location: location,
@@ -129,13 +131,50 @@ func generateCompleteMultpartUploadResult(bucket, key, location, etag string) Co
 	}
 }
 
-// writeSuccessResponse - write success headers
+// partNumber
+type partNumber []*Part
+
+func (b partNumber) Len() int           { return len(b) }
+func (b partNumber) Swap(i, j int)      { b[i], b[j] = b[j], b[i] }
+func (b partNumber) Less(i, j int) bool { return b[i].PartNumber < b[j].PartNumber }
+
+// generateListPartsResult
+func generateListPartsResult(objectMetadata drivers.ObjectResourcesMetadata) ListPartsResponse {
+	// TODO - support EncodingType in xml decoding
+	listPartsResponse := ListPartsResponse{}
+	listPartsResponse.Bucket = objectMetadata.Bucket
+	listPartsResponse.Key = objectMetadata.Key
+	listPartsResponse.UploadID = objectMetadata.UploadID
+	listPartsResponse.StorageClass = "STANDARD"
+	listPartsResponse.Initiator.ID = "minio"
+	listPartsResponse.Initiator.DisplayName = "minio"
+	listPartsResponse.Owner.ID = "minio"
+	listPartsResponse.Owner.DisplayName = "minio"
+
+	listPartsResponse.MaxParts = objectMetadata.MaxParts
+	listPartsResponse.PartNumberMarker = objectMetadata.PartNumberMarker
+	listPartsResponse.IsTruncated = objectMetadata.IsTruncated
+	listPartsResponse.NextPartNumberMarker = objectMetadata.NextPartNumberMarker
+
+	listPartsResponse.Part = make([]*Part, len(objectMetadata.Part))
+	for _, part := range objectMetadata.Part {
+		newPart := &Part{}
+		newPart.PartNumber = part.PartNumber
+		newPart.ETag = part.ETag
+		newPart.Size = part.Size
+		newPart.LastModified = part.LastModified.Format(iso8601Format)
+		listPartsResponse.Part = append(listPartsResponse.Part, newPart)
+	}
+	return listPartsResponse
+}
+
+// writeSuccessResponse write success headers
 func writeSuccessResponse(w http.ResponseWriter, acceptsContentType contentType) {
 	setCommonHeaders(w, getContentTypeString(acceptsContentType))
 	w.WriteHeader(http.StatusOK)
 }
 
-// writeErrorRespone - write error headers
+// writeErrorRespone write error headers
 func writeErrorResponse(w http.ResponseWriter, req *http.Request, errorType int, acceptsContentType contentType, resource string) {
 	error := getErrorCode(errorType)
 	// generate error response

pkg/api/api_router.go

@@ -45,14 +45,16 @@ func HTTPHandler(driver drivers.Driver) http.Handler {
 	mux.HandleFunc("/{bucket}", api.listObjectsHandler).Methods("GET")
 	mux.HandleFunc("/{bucket}", api.putBucketHandler).Methods("PUT")
 	mux.HandleFunc("/{bucket}", api.headBucketHandler).Methods("HEAD")
-	mux.HandleFunc("/{bucket}/{object:.*}", api.getObjectHandler).Methods("GET")
 	mux.HandleFunc("/{bucket}/{object:.*}", api.headObjectHandler).Methods("HEAD")
 	if featureflags.Get(featureflags.MultipartPutObject) {
 		log.Println("Enabling feature", featureflags.MultipartPutObject)
-		mux.HandleFunc("/{bucket}/{object:.*}", api.putObjectPartHandler).Queries("partNumber", "{partNumber:[0-9]+}", "uploadId", "{uploadId:.*}").Methods("PUT")
+		mux.HandleFunc("/{bucket}/{object:.*}", api.putObjectPartHandler).Queries("partNumber",
+			"{partNumber:[0-9]+}", "uploadId", "{uploadId:.*}").Methods("PUT")
+		mux.HandleFunc("/{bucket}/{object:.*}", api.listObjectPartsHandler).Queries("uploadId", "{uploadId:.*}").Methods("GET")
 		mux.HandleFunc("/{bucket}/{object:.*}", api.completeMultipartUploadHandler).Queries("uploadId", "{uploadId:.*}").Methods("POST")
 		mux.HandleFunc("/{bucket}/{object:.*}", api.newMultipartUploadHandler).Methods("POST")
 	}
+	mux.HandleFunc("/{bucket}/{object:.*}", api.getObjectHandler).Methods("GET")
 	mux.HandleFunc("/{bucket}/{object:.*}", api.putObjectHandler).Methods("PUT")
 
 	var conf = config.Config{}

pkg/api/resources.go

@@ -42,6 +42,23 @@ func getBucketResources(values url.Values) (v drivers.BucketResourcesMetadata) {
 	return
 }
 
+// parse object url queries
+func getObjectResources(values url.Values) (v drivers.ObjectResourcesMetadata) {
+	for key, value := range values {
+		switch true {
+		case key == "uploadId":
+			v.UploadID = value[0]
+		case key == "part-number-marker":
+			v.PartNumberMarker, _ = strconv.Atoi(value[0])
+		case key == "max-parts":
+			v.MaxParts, _ = strconv.Atoi(value[0])
+		case key == "encoding-type":
+			v.EncodingType = value[0]
+		}
+	}
+	return
+}
+
 // check if req query values have acl
 func isRequestBucketACL(values url.Values) bool {
 	for key := range values {

pkg/storage/drivers/donut/donut.go

@@ -411,3 +411,7 @@ func (d donutDriver) CreateObjectPart(bucket, key, uploadID string, partID int,
 func (d donutDriver) CompleteMultipartUpload(bucket, key, uploadID string, parts map[int]string) (string, error) {
 	return "", iodine.New(errors.New("Not Implemented"), nil)
 }
+
+func (d donutDriver) ListObjectParts(bucket, key, uploadID string) (drivers.ObjectResourcesMetadata, error) {
+	return drivers.ObjectResourcesMetadata{}, iodine.New(errors.New("Not Implemented"), nil)
+}

pkg/storage/drivers/driver.go

@@ -35,14 +35,15 @@ type Driver interface {
 	// Object Operations
 	GetObject(w io.Writer, bucket, object string) (int64, error)
 	GetPartialObject(w io.Writer, bucket, object string, start, length int64) (int64, error)
-	GetObjectMetadata(bucket string, object string, prefix string) (ObjectMetadata, error)
+	GetObjectMetadata(bucket, key, prefix string) (ObjectMetadata, error)
 	ListObjects(bucket string, resources BucketResourcesMetadata) ([]ObjectMetadata, BucketResourcesMetadata, error)
-	CreateObject(bucket string, key string, contentType string, md5sum string, size int64, data io.Reader) (string, error)
+	CreateObject(bucket, key, contentType, md5sum string, size int64, data io.Reader) (string, error)
 
 	// Object Multipart Operations
-	NewMultipartUpload(bucket string, key string, contentType string) (string, error)
+	NewMultipartUpload(bucket, key, contentType string) (string, error)
-	CreateObjectPart(bucket string, key string, uploadID string, partID int, contentType string, md5sum string, size int64, data io.Reader) (string, error)
+	CreateObjectPart(bucket, key, uploadID string, partID int, contentType string, md5sum string, size int64, data io.Reader) (string, error)
-	CompleteMultipartUpload(bucket string, key string, uploadID string, parts map[int]string) (string, error)
+	CompleteMultipartUpload(bucket, key, uploadID string, parts map[int]string) (string, error)
+	ListObjectParts(bucket, key, uploadID string) (ObjectResourcesMetadata, error)
 }
 
 // BucketACL - bucket level access control
@@ -103,6 +104,37 @@ const (
 	DefaultMode
 )
 
+// PartMetadata - various types of individual part resources
+type PartMetadata struct {
+	PartNumber   int
+	LastModified time.Time
+	ETag         string
+	Size         int64
+}
+
+// ObjectResourcesMetadata - various types of object resources
+type ObjectResourcesMetadata struct {
+	Bucket       string
+	EncodingType string
+	Key          string
+	UploadID     string
+	Initiator    struct {
+		ID          string
+		DisplayName string
+	}
+	Owner struct {
+		ID          string
+		DisplayName string
+	}
+	StorageClass         string
+	PartNumberMarker     int
+	NextPartNumberMarker int
+	MaxParts             int
+	IsTruncated          bool
+
+	Part []*PartMetadata
+}
+
 // BucketResourcesMetadata - various types of bucket resources
 type BucketResourcesMetadata struct {
 	Prefix         string

pkg/storage/drivers/memory/memory.go

@@ -49,6 +49,12 @@ type memoryDriver struct {
 type storedBucket struct {
 	bucketMetadata   drivers.BucketMetadata
 	objectMetadata   map[string]drivers.ObjectMetadata
+	multiPartSession map[string]multiPartSession
+}
+
+type multiPartSession struct {
+	totalParts int
+	uploadID   string
 }
 
 const (
@@ -533,19 +539,20 @@ func (memory *memoryDriver) NewMultipartUpload(bucket, key, contentType string)
 	}
 	memory.lock.RUnlock()
 
+	memory.lock.Lock()
 	id := []byte(strconv.FormatInt(rand.Int63(), 10) + bucket + key + time.Now().String())
 	uploadIDSum := sha512.Sum512(id)
 	uploadID := base64.URLEncoding.EncodeToString(uploadIDSum[:])
-	md5sumBytes := md5.Sum([]byte(uploadID))
-	// CreateObject expects in base64 which is coming over http request header
-	// while all response headers with ETag are hex encoding
-	md5sum := base64.StdEncoding.EncodeToString(md5sumBytes[:])
 
-	// Create UploadID session, this is a temporary work around to instantiate a session.
+	storedBucket.multiPartSession = make(map[string]multiPartSession)
-	// It would not be valid in future, since we need to work out proper sessions so that
+	storedBucket.multiPartSession[key] = multiPartSession{
-	// we can cleanly abort session and propagate failures.
+		uploadID:   uploadID,
-	_, err := memory.CreateObject(bucket, key+"?uploadId="+uploadID, contentType, md5sum, int64(len(uploadID)), bytes.NewBufferString(uploadID))
+		totalParts: 0,
-	return uploadID, iodine.New(err, nil)
+	}
+	memory.storedBuckets[bucket] = storedBucket
+	memory.lock.Unlock()
+
+	return uploadID, nil
 }
 
 func getMultipartKey(key string, uploadID string, partNumber int) string {
@@ -554,17 +561,29 @@ func getMultipartKey(key string, uploadID string, partNumber int) string {
 
 func (memory *memoryDriver) CreateObjectPart(bucket, key, uploadID string, partID int, contentType, expectedMD5Sum string, size int64, data io.Reader) (string, error) {
 	// Verify upload id
-	_, ok := memory.objects.Get(bucket + "/" + key + "?uploadId=" + uploadID)
+	memory.lock.RLock()
-	if !ok {
+	storedBucket := memory.storedBuckets[bucket]
+	if storedBucket.multiPartSession[key].uploadID != uploadID {
+		memory.lock.RUnlock()
 		return "", iodine.New(drivers.InvalidUploadID{UploadID: uploadID}, nil)
 	}
-	return memory.CreateObject(bucket, getMultipartKey(key, uploadID, partID), "", expectedMD5Sum, size, data)
+	memory.lock.RUnlock()
+
+	etag, err := memory.CreateObject(bucket, getMultipartKey(key, uploadID, partID), "", expectedMD5Sum, size, data)
+	if err != nil {
+		return "", iodine.New(err, nil)
+	}
+	// once successful, update totalParts
+	multiPartSession := storedBucket.multiPartSession[key]
+	multiPartSession.totalParts++
+	storedBucket.multiPartSession[key] = multiPartSession
+	return etag, nil
 }
 
 func (memory *memoryDriver) cleanupMultipartSession(bucket, key, uploadID string) {
 	memory.lock.Lock()
 	defer memory.lock.Unlock()
-	memory.objects.Delete(bucket + "/" + key + "?uploadId=" + uploadID)
+	delete(memory.storedBuckets[bucket].multiPartSession, key)
 }
 
 func (memory *memoryDriver) cleanupMultiparts(bucket, key, uploadID string, parts map[int]string) {
@@ -577,28 +596,29 @@ func (memory *memoryDriver) cleanupMultiparts(bucket, key, uploadID string, part
 }
 
 func (memory *memoryDriver) CompleteMultipartUpload(bucket, key, uploadID string, parts map[int]string) (string, error) {
-	// Verify upload id
-	_, ok := memory.objects.Get(bucket + "/" + key + "?uploadId=" + uploadID)
-	if !ok {
-		return "", iodine.New(drivers.InvalidUploadID{UploadID: uploadID}, nil)
-	}
 	if !drivers.IsValidBucket(bucket) {
 		return "", iodine.New(drivers.BucketNameInvalid{Bucket: bucket}, nil)
 	}
 	if !drivers.IsValidObjectName(key) {
 		return "", iodine.New(drivers.ObjectNameInvalid{Object: key}, nil)
 	}
+	// Verify upload id
 	memory.lock.RLock()
 	if _, ok := memory.storedBuckets[bucket]; ok == false {
 		memory.lock.RUnlock()
 		return "", iodine.New(drivers.BucketNotFound{Bucket: bucket}, nil)
 	}
+	storedBucket := memory.storedBuckets[bucket]
+	if storedBucket.multiPartSession[key].uploadID != uploadID {
+		memory.lock.RUnlock()
+		return "", iodine.New(drivers.InvalidUploadID{UploadID: uploadID}, nil)
+	}
 	memory.lock.RUnlock()
 
 	memory.lock.Lock()
 	var size int64
 	for i := range parts {
-		object, ok := memory.storedBuckets[bucket].objectMetadata[bucket+"/"+getMultipartKey(key, uploadID, i)]
+		object, ok := storedBucket.objectMetadata[bucket+"/"+getMultipartKey(key, uploadID, i)]
 		if !ok {
 			memory.lock.Unlock()
 			return "", iodine.New(errors.New("missing part: "+strconv.Itoa(i)), nil)
@@ -643,3 +663,51 @@ func (memory *memoryDriver) CompleteMultipartUpload(bucket, key, uploadID string
 	memory.cleanupMultipartSession(bucket, key, uploadID)
 	return etag, nil
 }
+
+// partNumber is a sortable interface for Part slice
+type partNumber []*drivers.PartMetadata
+
+func (a partNumber) Len() int           { return len(a) }
+func (a partNumber) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a partNumber) Less(i, j int) bool { return a[i].PartNumber < a[j].PartNumber }
+
+func (memory *memoryDriver) ListObjectParts(bucket, key, uploadID string) (drivers.ObjectResourcesMetadata, error) {
+	// Verify upload id
+	memory.lock.RLock()
+	defer memory.lock.RUnlock()
+	if _, ok := memory.storedBuckets[bucket]; ok == false {
+		return drivers.ObjectResourcesMetadata{}, iodine.New(drivers.BucketNotFound{Bucket: bucket}, nil)
+	}
+	storedBucket := memory.storedBuckets[bucket]
+	if storedBucket.multiPartSession[key].uploadID != uploadID {
+		return drivers.ObjectResourcesMetadata{}, iodine.New(drivers.InvalidUploadID{UploadID: uploadID}, nil)
+	}
+	// TODO support PartNumberMarker and NextPartNumberMarker
+	objectResourcesMetadata := drivers.ObjectResourcesMetadata{}
+	objectResourcesMetadata.UploadID = uploadID
+	objectResourcesMetadata.Bucket = bucket
+	objectResourcesMetadata.Key = key
+	objectResourcesMetadata.MaxParts = 1000
+	var parts []*drivers.PartMetadata
+	for i := 1; i <= storedBucket.multiPartSession[key].totalParts; i++ {
+		if len(parts) > objectResourcesMetadata.MaxParts {
+			sort.Sort(partNumber(parts))
+			objectResourcesMetadata.IsTruncated = true
+			objectResourcesMetadata.Part = parts
+			return objectResourcesMetadata, nil
+		}
+		object, ok := storedBucket.objectMetadata[bucket+"/"+getMultipartKey(key, uploadID, i)]
+		if !ok {
+			return drivers.ObjectResourcesMetadata{}, iodine.New(errors.New("missing part: "+strconv.Itoa(i)), nil)
+		}
+		partMetadata := &drivers.PartMetadata{}
+		partMetadata.Size = object.Size
+		partMetadata.LastModified = object.Created
+		partMetadata.ETag = object.Md5
+		partMetadata.PartNumber = i
+		parts = append(parts, partMetadata)
+	}
+	sort.Sort(partNumber(parts))
+	objectResourcesMetadata.Part = parts
+	return objectResourcesMetadata, nil
+}

pkg/storage/drivers/mocks/Driver.go

@@ -56,11 +56,10 @@ func (m *Driver) SetBucketMetadata(bucket, acl string) error {
 // SetGetObjectWriter is a mock
 func (m *Driver) SetGetObjectWriter(bucket, object string, data []byte) {
 	m.ObjectWriterData[bucket+":"+object] = data
-	//	println(string(m.ObjectWriterData["bucket:object"]))
 }
 
 // GetObject is a mock
-func (m *Driver) GetObject(w io.Writer, bucket string, object string) (int64, error) {
+func (m *Driver) GetObject(w io.Writer, bucket, object string) (int64, error) {
 	ret := m.Called(w, bucket, object)
 	r0 := ret.Get(0).(int64)
 	r1 := ret.Error(1)
@@ -74,7 +73,7 @@ func (m *Driver) GetObject(w io.Writer, bucket string, object string) (int64, er
 }
 
 // GetPartialObject is a mock
-func (m *Driver) GetPartialObject(w io.Writer, bucket string, object string, start int64, length int64) (int64, error) {
+func (m *Driver) GetPartialObject(w io.Writer, bucket, object string, start int64, length int64) (int64, error) {
 	ret := m.Called(w, bucket, object, start, length)
 
 	r0 := ret.Get(0).(int64)
@@ -95,7 +94,7 @@ func (m *Driver) GetPartialObject(w io.Writer, bucket string, object string, sta
 }
 
 // GetObjectMetadata is a mock
-func (m *Driver) GetObjectMetadata(bucket string, object string, prefix string) (drivers.ObjectMetadata, error) {
+func (m *Driver) GetObjectMetadata(bucket, object, prefix string) (drivers.ObjectMetadata, error) {
 	ret := m.Called(bucket, object, prefix)
 
 	r0 := ret.Get(0).(drivers.ObjectMetadata)
@@ -116,7 +115,7 @@ func (m *Driver) ListObjects(bucket string, resources drivers.BucketResourcesMet
 }
 
 // CreateObject is a mock
-func (m *Driver) CreateObject(bucket string, key string, contentType string, md5sum string, size int64, data io.Reader) (string, error) {
+func (m *Driver) CreateObject(bucket, key, contentType, md5sum string, size int64, data io.Reader) (string, error) {
 	ret := m.Called(bucket, key, contentType, md5sum, size, data)
 
 	r0 := ret.Get(0).(string)
@@ -126,7 +125,7 @@ func (m *Driver) CreateObject(bucket string, key string, contentType string, md5
 }
 
 // NewMultipartUpload is a mock
-func (m *Driver) NewMultipartUpload(bucket string, key string, contentType string) (string, error) {
+func (m *Driver) NewMultipartUpload(bucket, key, contentType string) (string, error) {
 	ret := m.Called(bucket, key, contentType)
 
 	r0 := ret.Get(0).(string)
@@ -136,7 +135,7 @@ func (m *Driver) NewMultipartUpload(bucket string, key string, contentType strin
 }
 
 // CreateObjectPart is a mock
-func (m *Driver) CreateObjectPart(bucket string, key string, uploadID string, partID int, contentType string, md5sum string, size int64, data io.Reader) (string, error) {
+func (m *Driver) CreateObjectPart(bucket, key, uploadID string, partID int, contentType string, md5sum string, size int64, data io.Reader) (string, error) {
 	ret := m.Called(bucket, key, uploadID, partID, contentType, md5sum, size, data)
 
 	r0 := ret.Get(0).(string)
@@ -146,7 +145,7 @@ func (m *Driver) CreateObjectPart(bucket string, key string, uploadID string, pa
 }
 
 // CompleteMultipartUpload is a mock
-func (m *Driver) CompleteMultipartUpload(bucket string, key string, uploadID string, parts map[int]string) (string, error) {
+func (m *Driver) CompleteMultipartUpload(bucket, key, uploadID string, parts map[int]string) (string, error) {
 	ret := m.Called(bucket, key, uploadID, parts)
 
 	r0 := ret.Get(0).(string)
@@ -154,3 +153,13 @@ func (m *Driver) CompleteMultipartUpload(bucket string, key string, uploadID str
 
 	return r0, r1
 }
+
+// ListObjectParts is a mock
+func (m *Driver) ListObjectParts(bucket, key, uploadID string) (drivers.ObjectResourcesMetadata, error) {
+	ret := m.Called(bucket, key, uploadID)
+
+	r0 := ret.Get(0).(drivers.ObjectResourcesMetadata)
+	r1 := ret.Error(1)
+
+	return r0, r1
+}