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128 lines
3.6 KiB
Go
128 lines
3.6 KiB
Go
package seafile
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import (
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"context"
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"io"
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"time"
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"github.com/rclone/rclone/fs"
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"github.com/rclone/rclone/fs/hash"
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)
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// Object describes a seafile object (also commonly called a file)
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type Object struct {
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fs *Fs // what this object is part of
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id string // internal ID of object
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remote string // The remote path (full path containing library name if target at root)
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pathInLibrary string // Path of the object without the library name
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size int64 // size of the object
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modTime time.Time // modification time of the object
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libraryID string // Needed to download the file
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}
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// ==================== Interface fs.DirEntry ====================
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// Return a string version
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func (o *Object) String() string {
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if o == nil {
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return "<nil>"
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}
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return o.remote
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}
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// Remote returns the remote string
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func (o *Object) Remote() string {
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return o.remote
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}
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// ModTime returns last modified time
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func (o *Object) ModTime(context.Context) time.Time {
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return o.modTime
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}
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// Size returns the size of an object in bytes
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func (o *Object) Size() int64 {
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return o.size
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}
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// ==================== Interface fs.ObjectInfo ====================
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// Fs returns the parent Fs
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func (o *Object) Fs() fs.Info {
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return o.fs
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}
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// Hash returns the selected checksum of the file
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// If no checksum is available it returns ""
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func (o *Object) Hash(ctx context.Context, ty hash.Type) (string, error) {
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return "", hash.ErrUnsupported
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}
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// Storable says whether this object can be stored
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func (o *Object) Storable() bool {
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return true
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}
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// ==================== Interface fs.Object ====================
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// SetModTime sets the metadata on the object to set the modification date
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func (o *Object) SetModTime(ctx context.Context, t time.Time) error {
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return fs.ErrorCantSetModTime
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}
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// Open opens the file for read. Call Close() on the returned io.ReadCloser
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func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (io.ReadCloser, error) {
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downloadLink, err := o.fs.getDownloadLink(ctx, o.libraryID, o.pathInLibrary)
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if err != nil {
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return nil, err
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}
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reader, err := o.fs.download(ctx, downloadLink, o.Size(), options...)
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if err != nil {
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return nil, err
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}
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return reader, nil
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}
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// Update in to the object with the modTime given of the given size
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//
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// When called from outside a Fs by rclone, src.Size() will always be >= 0.
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// But for unknown-sized objects (indicated by src.Size() == -1), Upload should either
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// return an error or update the object properly (rather than e.g. calling panic).
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func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) error {
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// The upload sometimes return a temporary 500 error
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// We cannot use the pacer to retry uploading the file as the upload link is single use only
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for retry := 0; retry <= 3; retry++ {
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uploadLink, err := o.fs.getUploadLink(ctx, o.libraryID)
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if err != nil {
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return err
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}
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uploaded, err := o.fs.upload(ctx, in, uploadLink, o.pathInLibrary)
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if err == ErrorInternalDuringUpload {
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// This is a temporary error, try again with a new upload link
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continue
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}
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if err != nil {
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return err
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}
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// Set the properties from the upload back to the object
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o.size = uploaded.Size
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o.id = uploaded.ID
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return nil
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}
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return ErrorInternalDuringUpload
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}
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// Remove this object
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func (o *Object) Remove(ctx context.Context) error {
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return o.fs.deleteFile(ctx, o.libraryID, o.pathInLibrary)
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}
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// ==================== Optional Interface fs.IDer ====================
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// ID returns the ID of the Object if known, or "" if not
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func (o *Object) ID() string {
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return o.id
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}
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