1
0
Fork 0
mirror of https://github.com/restic/restic.git synced 2024-12-21 23:33:03 +00:00
This commit is contained in:
Alexander Neumann 2024-04-07 09:58:44 +02:00
parent b3f38686ee
commit 9da6e7c329
2 changed files with 133 additions and 120 deletions

View file

@ -65,6 +65,18 @@ func New(ctx context.Context, repo restic.Repository, cfg Config) (*ROFS, error)
return rofs, nil
}
func (rofs *ROFS) updateSnapshots(ctx context.Context) error {
entries, err := buildSnapshotEntries(ctx, rofs.repo, rofs.cfg)
if err != nil {
return err
}
rofs.entries = entries
return nil
}
func buildSnapshotEntries(ctx context.Context, repo restic.Repository, cfg Config) (map[string]rofsEntry, error) {
var snapshots restic.Snapshots
err := cfg.Filter.FindAll(ctx, repo, repo, nil, func(_ string, sn *restic.Snapshot, _ error) error {
@ -83,25 +95,12 @@ func buildSnapshotEntries(ctx context.Context, repo restic.Repository, cfg Confi
list := make(map[string]rofsEntry)
list["foo"] = NewMemFile("foo", []byte("foobar content of file foo"), time.Now())
list["snapshots"] = NewMemFile("snapshots", []byte("here goes the snapshot list"), time.Now())
// list["snapshots"] = NewSnapshotsDir(cfg.PathTemplates, cfg.TimeTemplate)
list["snapshots"] = NewSnapshotsDir(ctx, repo, cfg.PathTemplates, cfg.TimeTemplate)
return list, nil
}
func (rofs *ROFS) updateSnapshots(ctx context.Context) error {
entries, err := buildSnapshotEntries(ctx, rofs.repo, rofs.cfg)
if err != nil {
return err
}
rofs.entries = entries
return nil
}
// Open opens the named file.
//
// When Open returns an error, it should be of type *PathError

View file

@ -1,134 +1,148 @@
package rofs
// // SnapshotsDir implements a tree of snapshots in repo as a file system in various sub-directories.
// type SnapshotsDir struct {
// lastUpdate time.Time
import (
"context"
"io"
"io/fs"
"time"
// pathTemplates []string
// timeTemplate string
"github.com/restic/restic/internal/debug"
"github.com/restic/restic/internal/restic"
)
// // list of top-level directories
// entries []rofsEntry
// SnapshotsDir implements a tree of snapshots in repo as a file system in various sub-directories.
type SnapshotsDir struct {
lastUpdate time.Time
pathTemplates []string
timeTemplate string
// list of top-level directories
entries []rofsEntry
repo restic.Repository
}
// ensure that the interface is implemented
var _ rofsEntry = &SnapshotsDir{}
// NewSnapshotsDir initializes a new top-level snapshots directory.
func NewSnapshotsDir(ctx context.Context, repo restic.Repository, pathTemplates []string, timeTemplate string) *SnapshotsDir {
dir := &SnapshotsDir{
pathTemplates: pathTemplates,
timeTemplate: timeTemplate,
lastUpdate: time.Now(),
repo: repo,
}
// testnames := []string{"foo", "bar", "baz", "snapshots"}
// for _, name := range testnames {
// dir.entries = append(dir.entries,
// fs.FileInfoToDirEntry(FileInfo{
// name: name,
// mode: 0644,
// modtime: time.Now(),
// }))
// }
// // ensure that the interface is implemented
// var _ rofsEntry = &SnapshotsDir{}
// // NewSnapshotsDir initializes a new top-level snapshots directory.
// func NewSnapshotsDir(pathTemplates []string, timeTemplate string) *SnapshotsDir {
// dir := &SnapshotsDir{
// pathTemplates: pathTemplates,
// timeTemplate: timeTemplate,
// lastUpdate: time.Now(),
// slices.SortFunc(dir.entries, func(a, b fs.DirEntry) int {
// if a.Name() == b.Name() {
// return 0
// }
// // testnames := []string{"foo", "bar", "baz", "snapshots"}
// // for _, name := range testnames {
// // dir.entries = append(dir.entries,
// // fs.FileInfoToDirEntry(FileInfo{
// // name: name,
// // mode: 0644,
// // modtime: time.Now(),
// // }))
// // }
// // slices.SortFunc(dir.entries, func(a, b fs.DirEntry) int {
// // if a.Name() == b.Name() {
// // return 0
// // }
// // if a.Name() < b.Name() {
// // return 1
// // }
// // return -1
// // })
// // // prepare for readdir with positive n
// // dir.entriesRemaining = dir.entries
// return dir
// if a.Name() < b.Name() {
// return 1
// }
// // ensure that it implements all necessary interfaces.
// var _ fs.ReadDirFile = &SnapshotsDir{}
// return -1
// })
// // Close closes the snapshots dir.
// func (dir *SnapshotsDir) Close() error {
// debug.Log("Close()")
// // prepare for readdir with positive n
// dir.entriesRemaining = dir.entries
// // reset readdir list
// // dir.entriesRemaining = dir.entries
return dir
}
// return nil
// }
// ensure that it implements all necessary interfaces.
var _ fs.ReadDirFile = &SnapshotsDir{}
// // Read is not implemented for a dir.
// func (dir *SnapshotsDir) Read([]byte) (int, error) {
// return 0, &fs.PathError{
// Op: "read",
// Err: fs.ErrInvalid,
// }
// }
// Close closes the snapshots dir.
func (dir *SnapshotsDir) Close() error {
debug.Log("Close()")
// // Stat returns information about the dir.
// func (dir *SnapshotsDir) Stat() (fs.FileInfo, error) {
// debug.Log("Stat(root)")
// reset readdir list
// dir.entriesRemaining = dir.entries
// fi := FileInfo{
// name: "root", // use special name, this is the root node
// size: 0,
// modtime: dir.lastUpdate,
// mode: 0755,
// }
return nil
}
// return fi, nil
// }
// Read is not implemented for a dir.
func (dir *SnapshotsDir) Read([]byte) (int, error) {
return 0, &fs.PathError{
Op: "read",
Err: fs.ErrInvalid,
}
}
// // ReadDir returns a list of entries.
// func (dir *SnapshotsDir) ReadDir(n int) ([]fs.DirEntry, error) {
// if n < 0 {
// debug.Log("Readdir(root, %v), return %v entries", n, len(dir.entries))
// return dir.entries, nil
// }
// Stat returns information about the dir.
func (dir *SnapshotsDir) Stat() (fs.FileInfo, error) {
debug.Log("Stat(root)")
// // complicated pointer handling
// if n > len(dir.entriesRemaining) {
// n = len(dir.entriesRemaining)
// }
fi := FileInfo{
name: "root", // use special name, this is the root node
size: 0,
modtime: dir.lastUpdate,
mode: 0755,
}
// if n == 0 {
// return nil, io.EOF
// }
return fi, nil
}
// list := dir.entriesRemaining[:n]
// dir.entriesRemaining = dir.entriesRemaining[n:]
// ReadDir returns a list of entries.
func (dir *SnapshotsDir) ReadDir(n int) ([]fs.DirEntry, error) {
if n < 0 {
debug.Log("Readdir(root, %v), return %v entries", n, len(dir.entries))
return dir.entries, nil
}
// return list, nil
// }
// complicated pointer handling
if n > len(dir.entriesRemaining) {
n = len(dir.entriesRemaining)
}
// // DirEntry returns meta data about the dir snapshots dir itself.
// func (dir *SnapshotsDir) DirEntry() fs.DirEntry {
// return dirEntry{
// fileInfo: FileInfo{
// name: "snapshots",
// mode: fs.ModeDir | 0755,
// modtime: dir.lastUpdate,
// },
// }
// }
if n == 0 {
return nil, io.EOF
}
// // Open opens the dir for reading.
// func (dir *SnapshotsDir) Open() (fs.File, error) {
// d := &openDir{
// path: "snapshots",
// fileInfo: FileInfo{
// name: "snapshots",
// mode: fs.ModeDir | 0555,
// modtime: dir.lastUpdate,
// },
// entries: dirMap2DirEntry(dir.entries),
// }
list := dir.entriesRemaining[:n]
dir.entriesRemaining = dir.entriesRemaining[n:]
// return d
// }
return list, nil
}
// DirEntry returns meta data about the dir snapshots dir itself.
func (dir *SnapshotsDir) DirEntry() fs.DirEntry {
return dirEntry{
fileInfo: FileInfo{
name: "snapshots",
mode: fs.ModeDir | 0755,
modtime: dir.lastUpdate,
},
}
}
// Open opens the dir for reading.
func (dir *SnapshotsDir) Open() (fs.File, error) {
d := &openDir{
path: "snapshots",
fileInfo: FileInfo{
name: "snapshots",
mode: fs.ModeDir | 0555,
modtime: dir.lastUpdate,
},
entries: dirMap2DirEntry(dir.entries),
}
return d
}