rclone/backend/alias/alias.go
Nick Craig-Wood 0d066bdf46 alias,cache,chunker,crypt: make any created backends be cached to fix rc problems
Before this change, when the above backends created a new backend they
didn't put it into the backend cache.

This meant that rc commands acting on those backends did not work.

This was fixed by making sure the backends use the backend cache.

See: https://forum.rclone.org/t/rclone-rc-backend-command-not-working-as-expected/18834
2020-09-01 18:21:03 +01:00

51 lines
1.4 KiB
Go

package alias
import (
"errors"
"strings"
"github.com/rclone/rclone/fs"
"github.com/rclone/rclone/fs/cache"
"github.com/rclone/rclone/fs/config/configmap"
"github.com/rclone/rclone/fs/config/configstruct"
"github.com/rclone/rclone/fs/fspath"
)
// Register with Fs
func init() {
fsi := &fs.RegInfo{
Name: "alias",
Description: "Alias for an existing remote",
NewFs: NewFs,
Options: []fs.Option{{
Name: "remote",
Help: "Remote or path to alias.\nCan be \"myremote:path/to/dir\", \"myremote:bucket\", \"myremote:\" or \"/local/path\".",
Required: true,
}},
}
fs.Register(fsi)
}
// Options defines the configuration for this backend
type Options struct {
Remote string `config:"remote"`
}
// NewFs constructs an Fs from the path.
//
// The returned Fs is the actual Fs, referenced by remote in the config
func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
// Parse config into Options struct
opt := new(Options)
err := configstruct.Set(m, opt)
if err != nil {
return nil, err
}
if opt.Remote == "" {
return nil, errors.New("alias can't point to an empty remote - check the value of the remote setting")
}
if strings.HasPrefix(opt.Remote, name+":") {
return nil, errors.New("can't point alias remote at itself - check the value of the remote setting")
}
return cache.Get(fspath.JoinRootPath(opt.Remote, root))
}