mirror of https://github.com/octoleo/restic.git
100 lines
1.7 KiB
Go
100 lines
1.7 KiB
Go
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/sha256"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"log"
|
|
"os"
|
|
"path/filepath"
|
|
|
|
"github.com/fd0/khepri"
|
|
)
|
|
|
|
func hash(filename string) (khepri.ID, error) {
|
|
h := sha256.New()
|
|
f, err := os.Open(filename)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
io.Copy(h, f)
|
|
return h.Sum([]byte{}), nil
|
|
}
|
|
|
|
func archive_dir(repo *khepri.DirRepository, path string) (khepri.ID, error) {
|
|
log.Printf("archiving dir %q", path)
|
|
dir, err := os.Open(path)
|
|
if err != nil {
|
|
log.Printf("open(%q): %v\n", path, err)
|
|
return nil, err
|
|
}
|
|
|
|
entries, err := dir.Readdir(-1)
|
|
if err != nil {
|
|
log.Printf("readdir(%q): %v\n", path, err)
|
|
return nil, err
|
|
}
|
|
|
|
// use nil ID for empty directories
|
|
if len(entries) == 0 {
|
|
return nil, nil
|
|
}
|
|
|
|
t := khepri.NewTree()
|
|
for _, e := range entries {
|
|
node := khepri.NodeFromFileInfo(e)
|
|
|
|
var id khepri.ID
|
|
var err error
|
|
|
|
if e.IsDir() {
|
|
id, err = archive_dir(repo, filepath.Join(path, e.Name()))
|
|
} else {
|
|
id, err = repo.PutFile(filepath.Join(path, e.Name()))
|
|
}
|
|
|
|
node.Content = id
|
|
|
|
t.Nodes = append(t.Nodes, node)
|
|
|
|
if err != nil {
|
|
log.Printf(" error storing %q: %v\n", e.Name(), err)
|
|
continue
|
|
}
|
|
}
|
|
|
|
log.Printf(" dir %q: %v entries", path, len(t.Nodes))
|
|
|
|
var buf bytes.Buffer
|
|
t.Save(&buf)
|
|
id, err := repo.PutRaw(buf.Bytes())
|
|
|
|
if err != nil {
|
|
log.Printf("error saving tree to repo: %v", err)
|
|
}
|
|
|
|
log.Printf("tree for %q saved at %s", path, id)
|
|
|
|
return id, nil
|
|
}
|
|
|
|
func commandBackup(repo *khepri.DirRepository, args []string) error {
|
|
if len(args) != 1 {
|
|
return errors.New("usage: backup dir")
|
|
}
|
|
|
|
target := args[0]
|
|
|
|
id, err := archive_dir(repo, target)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
fmt.Printf("%q archived as %v\n", target, id)
|
|
|
|
return nil
|
|
}
|