forked from TrueCloudLab/restic
79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
package layout
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import (
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"github.com/restic/restic/internal/backend"
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)
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// S3LegacyLayout implements the old layout used for s3 cloud storage backends, as
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// described in the Design document.
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type S3LegacyLayout struct {
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URL string
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Path string
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Join func(...string) string
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}
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var s3LayoutPaths = map[backend.FileType]string{
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backend.PackFile: "data",
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backend.SnapshotFile: "snapshot",
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backend.IndexFile: "index",
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backend.LockFile: "lock",
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backend.KeyFile: "key",
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}
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func (l *S3LegacyLayout) String() string {
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return "<S3LegacyLayout>"
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}
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// Name returns the name for this layout.
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func (l *S3LegacyLayout) Name() string {
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return "s3legacy"
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}
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// join calls Join with the first empty elements removed.
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func (l *S3LegacyLayout) join(url string, items ...string) string {
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for len(items) > 0 && items[0] == "" {
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items = items[1:]
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}
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path := l.Join(items...)
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if path == "" || path[0] != '/' {
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if url != "" && url[len(url)-1] != '/' {
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url += "/"
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}
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}
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return url + path
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}
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// Dirname returns the directory path for a given file type and name.
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func (l *S3LegacyLayout) Dirname(h backend.Handle) string {
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if h.Type == backend.ConfigFile {
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return l.URL + l.Join(l.Path, "/")
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}
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return l.join(l.URL, l.Path, s3LayoutPaths[h.Type]) + "/"
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}
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// Filename returns a path to a file, including its name.
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func (l *S3LegacyLayout) Filename(h backend.Handle) string {
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name := h.Name
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if h.Type == backend.ConfigFile {
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name = "config"
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}
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return l.join(l.URL, l.Path, s3LayoutPaths[h.Type], name)
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}
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// Paths returns all directory names
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func (l *S3LegacyLayout) Paths() (dirs []string) {
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for _, p := range s3LayoutPaths {
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dirs = append(dirs, l.Join(l.Path, p))
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}
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return dirs
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}
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// Basedir returns the base dir name for type t.
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func (l *S3LegacyLayout) Basedir(t backend.FileType) (dirname string, subdirs bool) {
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return l.Join(l.Path, s3LayoutPaths[t]), false
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}
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