/
object.go
163 lines (131 loc) · 3.76 KB
/
object.go
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package fichier
import (
"context"
"errors"
"fmt"
"io"
"net/http"
"time"
"github.com/rclone/rclone/fs"
"github.com/rclone/rclone/fs/hash"
"github.com/rclone/rclone/lib/rest"
)
// Object is a filesystem like object provided by an Fs
type Object struct {
fs *Fs
remote string
file File
}
// String returns a description of the Object
func (o *Object) String() string {
return o.file.Filename
}
// Remote returns the remote path
func (o *Object) Remote() string {
return o.remote
}
// ModTime returns the modification date of the file
// It should return a best guess if one isn't available
func (o *Object) ModTime(ctx context.Context) time.Time {
modTime, err := time.Parse("2006-01-02 15:04:05", o.file.Date)
if err != nil {
return time.Now()
}
return modTime
}
// Size returns the size of the file
func (o *Object) Size() int64 {
return o.file.Size
}
// Fs returns read only access to the Fs that this object is part of
func (o *Object) Fs() fs.Info {
return o.fs
}
// Hash returns the selected checksum of the file
// If no checksum is available it returns ""
func (o *Object) Hash(ctx context.Context, t hash.Type) (string, error) {
if t != hash.Whirlpool {
return "", hash.ErrUnsupported
}
return o.file.Checksum, nil
}
// Storable says whether this object can be stored
func (o *Object) Storable() bool {
return true
}
// SetModTime sets the metadata on the object to set the modification date
func (o *Object) SetModTime(context.Context, time.Time) error {
return fs.ErrorCantSetModTime
//return errors.New("setting modtime is not supported for 1fichier remotes")
}
func (o *Object) setMetaData(file File) {
o.file = file
}
// Open opens the file for read. Call Close() on the returned io.ReadCloser
func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (io.ReadCloser, error) {
fs.FixRangeOption(options, o.file.Size)
downloadToken, err := o.fs.getDownloadToken(ctx, o.file.URL)
if err != nil {
return nil, err
}
var resp *http.Response
opts := rest.Opts{
Method: "GET",
RootURL: downloadToken.URL,
Options: options,
}
err = o.fs.pacer.Call(func() (bool, error) {
resp, err = o.fs.rest.Call(ctx, &opts)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return nil, err
}
return resp.Body, err
}
// Update in to the object with the modTime given of the given size
//
// When called from outside an Fs by rclone, src.Size() will always be >= 0.
// But for unknown-sized objects (indicated by src.Size() == -1), Upload should either
// return an error or update the object properly (rather than e.g. calling panic).
func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) error {
if src.Size() < 0 {
return errors.New("refusing to update with unknown size")
}
// upload with new size but old name
info, err := o.fs.putUnchecked(ctx, in, o.Remote(), src.Size(), options...)
if err != nil {
return err
}
// Delete duplicate after successful upload
err = o.Remove(ctx)
if err != nil {
return fmt.Errorf("failed to remove old version: %w", err)
}
// Replace guts of old object with new one
*o = *info.(*Object)
return nil
}
// Remove removes this object
func (o *Object) Remove(ctx context.Context) error {
// fs.Debugf(f, "Removing file `%s` with url `%s`", o.file.Filename, o.file.URL)
_, err := o.fs.deleteFile(ctx, o.file.URL)
if err != nil {
return err
}
return nil
}
// MimeType of an Object if known, "" otherwise
func (o *Object) MimeType(ctx context.Context) string {
return o.file.ContentType
}
// ID returns the ID of the Object if known, or "" if not
func (o *Object) ID() string {
return o.file.URL
}
// Check the interfaces are satisfied
var (
_ fs.Object = (*Object)(nil)
_ fs.MimeTyper = (*Object)(nil)
_ fs.IDer = (*Object)(nil)
)