Golang fs.MimeType函數代碼示例

// Update the already existing object
//
// Copy the reader into the object updating modTime and size
//
// The new object may have been created if an error is returned
func (o *Object) Update(in io.Reader, src fs.ObjectInfo) error {
	size := src.Size()
	modTime := src.ModTime()
	if o.isDocument {
		return errors.New("can't update a google document")
	}
	updateInfo := &drive.File{
		Id:           o.id,
		MimeType:     fs.MimeType(o),
		ModifiedDate: modTime.Format(timeFormatOut),
	}

	// Make the API request to upload metadata and file data.
	var err error
	var info *drive.File
	if size == 0 || size < int64(driveUploadCutoff) {
		// Don't retry, return a retry error instead
		err = o.fs.pacer.CallNoRetry(func() (bool, error) {
			info, err = o.fs.svc.Files.Update(updateInfo.Id, updateInfo).SetModifiedDate(true).Media(in, googleapi.ContentType("")).Do()
			return shouldRetry(err)
		})
		if err != nil {
			return err
		}
	} else {
		// Upload the file in chunks
		info, err = o.fs.Upload(in, size, fs.MimeType(o), updateInfo, o.remote)
		if err != nil {
			return err
		}
	}
	o.setMetaData(info)
	return nil
}

// Update the Object from in with modTime and size
func (o *Object) Update(in io.Reader, modTime time.Time, size int64) error {
	uploader := s3manager.NewUploader(o.fs.ses, func(u *s3manager.Uploader) {
		u.Concurrency = 2
		u.LeavePartsOnError = false
		u.S3 = o.fs.c
	})

	// Set the mtime in the meta data
	metadata := map[string]*string{
		metaMtime: aws.String(swift.TimeToFloatString(modTime)),
	}

	// Guess the content type
	contentType := fs.MimeType(o)

	key := o.fs.root + o.remote
	req := s3manager.UploadInput{
		Bucket:      &o.fs.bucket,
		ACL:         &o.fs.perm,
		Key:         &key,
		Body:        in,
		ContentType: &contentType,
		Metadata:    metadata,
		//ContentLength: &size,
	}
	_, err := uploader.Upload(&req)
	if err != nil {
		return err
	}

	// Read the metadata from the newly created object
	o.meta = nil // wipe old metadata
	err = o.readMetaData()
	return err
}

// SetModTime sets the modification time of the local fs object
func (o *Object) SetModTime(modTime time.Time) {
	err := o.readMetaData()
	if err != nil {
		fs.Stats.Error()
		fs.ErrorLog(o, "Failed to read metadata: %s", err)
		return
	}
	o.meta[metaMtime] = aws.String(swift.TimeToFloatString(modTime))

	// Guess the content type
	contentType := fs.MimeType(o)

	// Copy the object to itself to update the metadata
	key := o.fs.root + o.remote
	sourceKey := o.fs.bucket + "/" + key
	directive := s3.MetadataDirectiveReplace // replace metadata with that passed in
	req := s3.CopyObjectInput{
		Bucket:            &o.fs.bucket,
		ACL:               &o.fs.perm,
		Key:               &key,
		ContentType:       &contentType,
		CopySource:        aws.String(url.QueryEscape(sourceKey)),
		Metadata:          o.meta,
		MetadataDirective: &directive,
	}
	_, err = o.fs.c.CopyObject(&req)
	if err != nil {
		fs.Stats.Error()
		fs.ErrorLog(o, "Failed to update remote mtime: %s", err)
	}
}

// SetModTime sets the modification time of the local fs object
func (o *Object) SetModTime(modTime time.Time) error {
	err := o.readMetaData()
	if err != nil {
		return err
	}
	o.meta[metaMtime] = aws.String(swift.TimeToFloatString(modTime))

	if o.bytes >= maxSizeForCopy {
		fs.Debug(o, "SetModTime is unsupported for objects bigger than %v bytes", fs.SizeSuffix(maxSizeForCopy))
		return nil
	}

	// Guess the content type
	contentType := fs.MimeType(o)

	// Copy the object to itself to update the metadata
	key := o.fs.root + o.remote
	sourceKey := o.fs.bucket + "/" + key
	directive := s3.MetadataDirectiveReplace // replace metadata with that passed in
	req := s3.CopyObjectInput{
		Bucket:            &o.fs.bucket,
		ACL:               &o.fs.perm,
		Key:               &key,
		ContentType:       &contentType,
		CopySource:        aws.String(url.QueryEscape(sourceKey)),
		Metadata:          o.meta,
		MetadataDirective: &directive,
	}
	_, err = o.fs.c.CopyObject(&req)
	return err
}

// Update the already existing object
//
// Copy the reader into the object updating modTime and size
//
// The new object may have been created if an error is returned
func (o *FsObjectDrive) Update(in io.Reader, modTime time.Time, size int64) error {
	updateInfo := &drive.File{
		Id:           o.id,
		ModifiedDate: modTime.Format(timeFormatOut),
	}

	// Make the API request to upload metadata and file data.
	var err error
	var info *drive.File
	if size == 0 || size < int64(driveUploadCutoff) {
		// Don't retry, return a retry error instead
		err = o.drive.pacer.CallNoRetry(func() (bool, error) {
			info, err = o.drive.svc.Files.Update(updateInfo.Id, updateInfo).SetModifiedDate(true).Media(in).Do()
			return shouldRetry(err)
		})
		if err != nil {
			return err
		}
	} else {
		// Upload the file in chunks
		info, err = o.drive.Upload(in, size, fs.MimeType(o), updateInfo, o.remote)
		if err != nil {
			return err
		}
	}
	o.setMetaData(info)
	return nil
}

// Update the Object from in with modTime and size
func (o *Object) Update(in io.Reader, src fs.ObjectInfo) error {
	modTime := src.ModTime()

	uploader := s3manager.NewUploader(o.fs.ses, func(u *s3manager.Uploader) {
		u.Concurrency = 2
		u.LeavePartsOnError = false
		u.S3 = o.fs.c
		u.PartSize = s3manager.MinUploadPartSize
		size := src.Size()

		// Adjust PartSize until the number of parts is small enough.
		if size/u.PartSize >= s3manager.MaxUploadParts {
			// Calculate partition size rounded up to the nearest MB
			u.PartSize = (((size / s3manager.MaxUploadParts) >> 20) + 1) << 20
		}
	})

	// Set the mtime in the meta data
	metadata := map[string]*string{
		metaMtime: aws.String(swift.TimeToFloatString(modTime)),
	}

	// Guess the content type
	mimeType := fs.MimeType(src)

	key := o.fs.root + o.remote
	req := s3manager.UploadInput{
		Bucket:      &o.fs.bucket,
		ACL:         &o.fs.acl,
		Key:         &key,
		Body:        in,
		ContentType: &mimeType,
		Metadata:    metadata,
		//ContentLength: &size,
	}
	if o.fs.sse != "" {
		req.ServerSideEncryption = &o.fs.sse
	}
	if o.fs.storageClass != "" {
		req.StorageClass = &o.fs.storageClass
	}
	_, err := uploader.Upload(&req)
	if err != nil {
		return err
	}

	// Read the metadata from the newly created object
	o.meta = nil // wipe old metadata
	err = o.readMetaData()
	return err
}

// newLargeUpload starts an upload of object o from in with metadata in src
func (f *Fs) newLargeUpload(o *Object, in io.Reader, src fs.ObjectInfo) (up *largeUpload, err error) {
	remote := o.remote
	size := src.Size()
	parts := size / int64(chunkSize)
	if size%int64(chunkSize) != 0 {
		parts++
	}
	if parts > maxParts {
		return nil, errors.Errorf("%q too big (%d bytes) makes too many parts %d > %d - increase --b2-chunk-size", remote, size, parts, maxParts)
	}
	modTime := src.ModTime()
	opts := rest.Opts{
		Method: "POST",
		Path:   "/b2_start_large_file",
	}
	bucketID, err := f.getBucketID()
	if err != nil {
		return nil, err
	}
	var request = api.StartLargeFileRequest{
		BucketID:    bucketID,
		Name:        o.fs.root + remote,
		ContentType: fs.MimeType(src),
		Info: map[string]string{
			timeKey: timeString(modTime),
		},
	}
	// Set the SHA1 if known
	if calculatedSha1, err := src.Hash(fs.HashSHA1); err == nil && calculatedSha1 != "" {
		request.Info[sha1Key] = calculatedSha1
	}
	var response api.StartLargeFileResponse
	err = f.pacer.Call(func() (bool, error) {
		resp, err := f.srv.CallJSON(&opts, &request, &response)
		return f.shouldRetry(resp, err)
	})
	if err != nil {
		return nil, err
	}
	up = &largeUpload{
		f:     f,
		o:     o,
		in:    in,
		id:    response.ID,
		size:  size,
		parts: parts,
		sha1s: make([]string, parts),
	}
	return up, nil
}

// Update the Object from in with modTime and size
func (o *FsObjectS3) Update(in io.Reader, modTime time.Time, size int64) error {
	// Set the mtime in the headers
	headers := s3.Headers{
		metaMtime: swift.TimeToFloatString(modTime),
	}

	_, err := o.s3.b.PutReaderHeaders(o.s3.root+o.remote, in, size, fs.MimeType(o), o.s3.perm, headers)
	if err != nil {
		return err
	}
	// Read the metadata from the newly created object
	o.meta = nil // wipe old metadata
	err = o.readMetaData()
	return err
}

// Update the object with the contents of the io.Reader, modTime and size
//
// The new object may have been created if an error is returned
func (o *FsObjectStorage) Update(in io.Reader, modTime time.Time, size int64) error {
	object := storage.Object{
		Bucket:      o.storage.bucket,
		Name:        o.storage.root + o.remote,
		ContentType: fs.MimeType(o),
		Size:        uint64(size),
		Updated:     modTime.Format(timeFormatOut), // Doesn't get set
		Metadata:    metadataFromModTime(modTime),
	}
	newObject, err := o.storage.svc.Objects.Insert(o.storage.bucket, &object).Media(in).Name(object.Name).PredefinedAcl(o.storage.objectAcl).Do()
	if err != nil {
		return err
	}
	// Set the metadata for the new object while we have it
	o.setMetaData(newObject)
	return nil
}

// Update the object with the contents of the io.Reader, modTime and size
//
// The new object may have been created if an error is returned
func (o *Object) Update(in io.Reader, src fs.ObjectInfo) error {
	size := src.Size()
	modTime := src.ModTime()

	object := storage.Object{
		Bucket:      o.fs.bucket,
		Name:        o.fs.root + o.remote,
		ContentType: fs.MimeType(o),
		Size:        uint64(size),
		Updated:     modTime.Format(timeFormatOut), // Doesn't get set
		Metadata:    metadataFromModTime(modTime),
	}
	newObject, err := o.fs.svc.Objects.Insert(o.fs.bucket, &object).Media(in, googleapi.ContentType("")).Name(object.Name).PredefinedAcl(o.fs.objectAcl).Do()
	if err != nil {
		return err
	}
	// Set the metadata for the new object while we have it
	o.setMetaData(newObject)
	return nil
}

// Put the object
//
// This assumes that the object doesn't not already exists - if you
// call it when it does exist then it will create a duplicate.  Call
// object.Update() in this case.
//
// Copy the reader in to the new object which is returned
//
// The new object may have been created if an error is returned
func (f *FsDrive) Put(in io.Reader, remote string, modTime time.Time, size int64) (fs.Object, error) {
	// Temporary FsObject under construction
	o := &FsObjectDrive{drive: f, remote: remote}

	directory, leaf := splitPath(o.remote)
	directoryId, err := f.findDir(directory, true)
	if err != nil {
		return o, fmt.Errorf("Couldn't find or make directory: %s", err)
	}

	// Define the metadata for the file we are going to create.
	createInfo := &drive.File{
		Title:        leaf,
		Description:  leaf,
		Parents:      []*drive.ParentReference{{Id: directoryId}},
		MimeType:     fs.MimeType(o),
		ModifiedDate: modTime.Format(timeFormatOut),
	}

	var info *drive.File
	if size == 0 || size < int64(driveUploadCutoff) {
		// Make the API request to upload metadata and file data.
		// Don't retry, return a retry error instead
		f.beginCall()
		info, err = f.svc.Files.Insert(createInfo).Media(in).Do()
		if f.endCall(err) {
			return o, fs.RetryErrorf("Upload failed - retry: %s", err)
		}
		if err != nil {
			return o, fmt.Errorf("Upload failed: %s", err)
		}
	} else {
		// Upload the file in chunks
		info, err = f.Upload(in, size, createInfo.MimeType, createInfo, remote)
		if err != nil {
			return o, err
		}
	}
	o.setMetaData(info)
	return o, nil
}

// Update the object with the contents of the io.Reader, modTime and size
//
// The new object may have been created if an error is returned
func (o *Object) Update(in io.Reader, src fs.ObjectInfo) error {
	size := src.Size()
	modTime := src.ModTime()

	// Note whether this is a dynamic large object before starting
	isDynamicLargeObject, err := o.isDynamicLargeObject()
	if err != nil {
		return err
	}

	// Set the mtime
	m := swift.Metadata{}
	m.SetModTime(modTime)
	contentType := fs.MimeType(src)
	headers := m.ObjectHeaders()
	uniquePrefix := ""
	if size > int64(chunkSize) {
		uniquePrefix, err = o.updateChunks(in, headers, size, contentType)
		if err != nil {
			return err
		}
	} else {
		headers["Content-Length"] = strconv.FormatInt(size, 10) // set Content-Length as we know it
		_, err := o.fs.c.ObjectPut(o.fs.container, o.fs.root+o.remote, in, true, "", contentType, headers)
		if err != nil {
			return err
		}
	}

	// If file was a dynamic large object then remove old/all segments
	if isDynamicLargeObject {
		err = o.removeSegments(uniquePrefix)
		if err != nil {
			fs.Log(o, "Failed to remove old segments - carrying on with upload: %v", err)
		}
	}

	// Read the metadata from the newly created object
	o.headers = nil // wipe old metadata
	return o.readMetaData()
}

// Creates a drive.File info from the parameters passed in and a half
// finished FsObjectDrive which must have setMetaData called on it
//
// Used to create new objects
func (f *FsDrive) createFileInfo(remote string, modTime time.Time, size int64) (*FsObjectDrive, *drive.File, error) {
	// Temporary FsObject under construction
	o := &FsObjectDrive{
		drive:  f,
		remote: remote,
		bytes:  size,
	}

	leaf, directoryId, err := f.dirCache.FindPath(remote, true)
	if err != nil {
		return nil, nil, err
	}

	// Define the metadata for the file we are going to create.
	createInfo := &drive.File{
		Title:        leaf,
		Description:  leaf,
		Parents:      []*drive.ParentReference{{Id: directoryId}},
		MimeType:     fs.MimeType(o),
		ModifiedDate: modTime.Format(timeFormatOut),
	}
	return o, createInfo, nil
}

// Update the Object from in with modTime and size
func (o *FsObjectS3) Update(in io.Reader, modTime time.Time, size int64) error {
	opts := s3manager.UploadOptions{
		// PartSize:          64 * 1024 * 1024, use default
		Concurrency:       2, // limit concurrency
		LeavePartsOnError: false,
		S3:                o.s3.c,
	}
	uploader := s3manager.NewUploader(&opts)

	// Set the mtime in the meta data
	metadata := map[string]*string{
		metaMtime: aws.String(swift.TimeToFloatString(modTime)),
	}

	// Guess the content type
	contentType := fs.MimeType(o)

	key := o.s3.root + o.remote
	req := s3manager.UploadInput{
		Bucket:      &o.s3.bucket,
		ACL:         &o.s3.perm,
		Key:         &key,
		Body:        in,
		ContentType: &contentType,
		Metadata:    metadata,
		//ContentLength: &size,
	}
	_, err := uploader.Upload(&req)
	if err != nil {
		return err
	}

	// Read the metadata from the newly created object
	o.meta = nil // wipe old metadata
	err = o.readMetaData()
	return err
}

// Update the already existing object
//
// Copy the reader into the object updating modTime and size
//
// The new object may have been created if an error is returned
func (o *Object) Update(in io.Reader, src fs.ObjectInfo) error {
	size := src.Size()
	modTime := src.ModTime()

	remote := o.remotePath()
	//create full path to file before upload.
	err1 := mkDirFullPath(o.fs.yd, remote)
	if err1 != nil {
		return err1
	}
	//upload file
	overwrite := true //overwrite existing file
	mimeType := fs.MimeType(src)
	err := o.fs.yd.Upload(in, remote, overwrite, mimeType)
	if err == nil {
		//if file uploaded sucessfully then return metadata
		o.bytes = uint64(size)
		o.modTime = modTime
		o.md5sum = "" // according to unit tests after put the md5 is empty.
		//and set modTime of uploaded file
		err = o.SetModTime(modTime)
	}
	return err
}