mirror of
https://github.com/octoleo/restic.git
synced 2024-11-22 04:45:15 +00:00
Refactor
This commit is contained in:
parent
d60828fc15
commit
2428843faa
@ -1,117 +1,13 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"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 store_file(repo *khepri.Repository, path string) (khepri.ID, error) {
|
||||
obj, idch, err := repo.Create(khepri.TYPE_BLOB)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
file, err := os.Open(path)
|
||||
defer func() {
|
||||
file.Close()
|
||||
}()
|
||||
|
||||
_, err = io.Copy(obj, file)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = obj.Close()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return <-idch, nil
|
||||
}
|
||||
|
||||
func archive_dir(repo *khepri.Repository, 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 = store_file(repo, 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))
|
||||
|
||||
obj, idch, err := repo.Create(khepri.TYPE_BLOB)
|
||||
|
||||
if err != nil {
|
||||
log.Printf("error creating object for tree: %v", err)
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = t.Save(obj)
|
||||
if err != nil {
|
||||
log.Printf("error saving tree to repo: %v", err)
|
||||
}
|
||||
|
||||
obj.Close()
|
||||
|
||||
id := <-idch
|
||||
log.Printf("tree for %q saved at %s", path, id)
|
||||
|
||||
return id, nil
|
||||
}
|
||||
|
||||
func commandBackup(repo *khepri.Repository, args []string) error {
|
||||
if len(args) != 1 {
|
||||
return errors.New("usage: backup dir")
|
||||
@ -119,13 +15,18 @@ func commandBackup(repo *khepri.Repository, args []string) error {
|
||||
|
||||
target := args[0]
|
||||
|
||||
id, err := archive_dir(repo, target)
|
||||
tree, err := khepri.NewTreeFromPath(repo, target)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
id, err := tree.Save(repo)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
sn := khepri.NewSnapshot(target)
|
||||
sn.TreeID = id
|
||||
sn.Content = id
|
||||
snid, err := sn.Save(repo)
|
||||
|
||||
if err != nil {
|
||||
|
90
cmd/khepri/cmd_dump.go
Normal file
90
cmd/khepri/cmd_dump.go
Normal file
@ -0,0 +1,90 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"log"
|
||||
"os"
|
||||
|
||||
"github.com/fd0/khepri"
|
||||
)
|
||||
|
||||
func dump_tree(repo *khepri.Repository, id khepri.ID) error {
|
||||
tree, err := khepri.NewTreeFromRepo(repo, id)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
buf, err := json.MarshalIndent(tree, "", " ")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
fmt.Printf("tree %s\n%s\n", id, buf)
|
||||
|
||||
for _, node := range tree.Nodes {
|
||||
if node.Type == "dir" {
|
||||
err = dump_tree(repo, node.Subtree)
|
||||
if err != nil {
|
||||
fmt.Fprintf(os.Stderr, "error: %v\n", err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func dump_snapshot(repo *khepri.Repository, id khepri.ID) error {
|
||||
sn, err := khepri.LoadSnapshot(repo, id)
|
||||
if err != nil {
|
||||
log.Fatalf("error loading snapshot %s", id)
|
||||
}
|
||||
|
||||
buf, err := json.MarshalIndent(sn, "", " ")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
fmt.Printf("%s\n%s\n", sn, buf)
|
||||
|
||||
return dump_tree(repo, sn.Content)
|
||||
}
|
||||
|
||||
func dump_file(repo *khepri.Repository, id khepri.ID) error {
|
||||
rd, err := repo.Get(khepri.TYPE_BLOB, id)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
io.Copy(os.Stdout, rd)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func commandDump(repo *khepri.Repository, args []string) error {
|
||||
if len(args) != 2 {
|
||||
return errors.New("usage: dump [snapshot|tree|file] ID")
|
||||
}
|
||||
|
||||
tpe := args[0]
|
||||
|
||||
id, err := khepri.ParseID(args[1])
|
||||
if err != nil {
|
||||
errx(1, "invalid id %q: %v", args[0], err)
|
||||
}
|
||||
|
||||
switch tpe {
|
||||
case "snapshot":
|
||||
return dump_snapshot(repo, id)
|
||||
case "tree":
|
||||
return dump_tree(repo, id)
|
||||
case "file":
|
||||
return dump_file(repo, id)
|
||||
default:
|
||||
return fmt.Errorf("invalid type %q", tpe)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
@ -41,7 +41,7 @@ func fsck_snapshot(repo *khepri.Repository, id khepri.ID) (bool, error) {
|
||||
return false, err
|
||||
}
|
||||
|
||||
return fsck_tree(repo, sn.TreeID)
|
||||
return fsck_tree(repo, sn.Content)
|
||||
}
|
||||
|
||||
func commandFsck(repo *khepri.Repository, args []string) error {
|
||||
|
@ -2,23 +2,26 @@ package main
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"log"
|
||||
"os"
|
||||
"path"
|
||||
"path/filepath"
|
||||
"syscall"
|
||||
|
||||
"github.com/fd0/khepri"
|
||||
)
|
||||
|
||||
func restore_file(repo *khepri.Repository, node khepri.Node, target string) error {
|
||||
log.Printf(" restore file %q\n", target)
|
||||
|
||||
func restore_file(repo *khepri.Repository, node *khepri.Node, path string) (err error) {
|
||||
switch node.Type {
|
||||
case "file":
|
||||
// TODO: handle hard links
|
||||
rd, err := repo.Get(khepri.TYPE_BLOB, node.Content)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
f, err := os.OpenFile(target, os.O_CREATE|os.O_WRONLY, 0600)
|
||||
f, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY, 0600)
|
||||
defer f.Close()
|
||||
if err != nil {
|
||||
return err
|
||||
@ -29,17 +32,65 @@ func restore_file(repo *khepri.Repository, node khepri.Node, target string) erro
|
||||
return err
|
||||
}
|
||||
|
||||
err = f.Chmod(node.Mode)
|
||||
case "symlink":
|
||||
err = os.Symlink(node.LinkTarget, path)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
err = f.Chown(int(node.User), int(node.Group))
|
||||
err = os.Lchown(path, int(node.UID), int(node.GID))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
err = os.Chtimes(target, node.AccessTime, node.ModTime)
|
||||
f, err := os.OpenFile(path, khepri.O_PATH|syscall.O_NOFOLLOW, 0600)
|
||||
defer f.Close()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
var utimes = []syscall.Timeval{
|
||||
syscall.NsecToTimeval(node.AccessTime.UnixNano()),
|
||||
syscall.NsecToTimeval(node.ModTime.UnixNano()),
|
||||
}
|
||||
err = syscall.Futimes(int(f.Fd()), utimes)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
case "dev":
|
||||
err = syscall.Mknod(path, syscall.S_IFBLK|0600, int(node.Device))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
case "chardev":
|
||||
err = syscall.Mknod(path, syscall.S_IFCHR|0600, int(node.Device))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
case "fifo":
|
||||
err = syscall.Mkfifo(path, 0600)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
case "socket":
|
||||
// nothing to do, we do not restore sockets
|
||||
default:
|
||||
return fmt.Errorf("filetype %q not implemented!\n", node.Type)
|
||||
}
|
||||
|
||||
err = os.Chmod(path, node.Mode)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
err = os.Chown(path, int(node.UID), int(node.GID))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
err = os.Chtimes(path, node.AccessTime, node.ModTime)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
@ -47,61 +98,48 @@ func restore_file(repo *khepri.Repository, node khepri.Node, target string) erro
|
||||
return nil
|
||||
}
|
||||
|
||||
func restore_dir(repo *khepri.Repository, id khepri.ID, target string) error {
|
||||
log.Printf(" restore dir %q\n", target)
|
||||
rd, err := repo.Get(khepri.TYPE_BLOB, id)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
func restore_subtree(repo *khepri.Repository, tree *khepri.Tree, path string) {
|
||||
fmt.Printf("restore_subtree(%s)\n", path)
|
||||
|
||||
t := khepri.NewTree()
|
||||
err = t.Restore(rd)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for _, node := range tree.Nodes {
|
||||
nodepath := filepath.Join(path, node.Name)
|
||||
// fmt.Printf("%s:%s\n", node.Type, nodepath)
|
||||
|
||||
for _, node := range t.Nodes {
|
||||
name := path.Base(node.Name)
|
||||
if name == "." || name == ".." {
|
||||
return errors.New("invalid path")
|
||||
}
|
||||
|
||||
nodepath := path.Join(target, name)
|
||||
if node.Mode.IsDir() {
|
||||
err = os.Mkdir(nodepath, 0700)
|
||||
if node.Type == "dir" {
|
||||
err := os.Mkdir(nodepath, 0700)
|
||||
if err != nil {
|
||||
return err
|
||||
fmt.Fprintf(os.Stderr, "%s\n", err)
|
||||
continue
|
||||
}
|
||||
|
||||
err = os.Chmod(nodepath, node.Mode)
|
||||
if err != nil {
|
||||
return err
|
||||
fmt.Fprintf(os.Stderr, "%s\n", err)
|
||||
continue
|
||||
}
|
||||
|
||||
err = os.Chown(nodepath, int(node.User), int(node.Group))
|
||||
err = os.Chown(nodepath, int(node.UID), int(node.GID))
|
||||
if err != nil {
|
||||
return err
|
||||
fmt.Fprintf(os.Stderr, "%s\n", err)
|
||||
continue
|
||||
}
|
||||
|
||||
err = restore_dir(repo, node.Content, nodepath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
restore_subtree(repo, node.Tree, filepath.Join(path, node.Name))
|
||||
|
||||
err = os.Chtimes(nodepath, node.AccessTime, node.ModTime)
|
||||
if err != nil {
|
||||
return err
|
||||
fmt.Fprintf(os.Stderr, "%s\n", err)
|
||||
continue
|
||||
}
|
||||
|
||||
} else {
|
||||
err = restore_file(repo, node, nodepath)
|
||||
err := restore_file(repo, node, nodepath)
|
||||
if err != nil {
|
||||
return err
|
||||
fmt.Fprintf(os.Stderr, "%s\n", err)
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func commandRestore(repo *khepri.Repository, args []string) error {
|
||||
@ -126,11 +164,13 @@ func commandRestore(repo *khepri.Repository, args []string) error {
|
||||
log.Fatalf("error loading snapshot %s", id)
|
||||
}
|
||||
|
||||
err = restore_dir(repo, sn.TreeID, target)
|
||||
tree, err := khepri.NewTreeFromRepo(repo, sn.Content)
|
||||
if err != nil {
|
||||
return err
|
||||
log.Fatalf("error loading tree %s", sn.Content)
|
||||
}
|
||||
|
||||
restore_subtree(repo, tree, target)
|
||||
|
||||
log.Printf("%q restored to %q\n", id, target)
|
||||
|
||||
return nil
|
||||
|
@ -34,6 +34,7 @@ func init() {
|
||||
commands["list"] = commandList
|
||||
commands["snapshots"] = commandSnapshots
|
||||
commands["fsck"] = commandFsck
|
||||
commands["dump"] = commandDump
|
||||
}
|
||||
|
||||
func main() {
|
||||
|
37
cmd/stat/stat.go
Normal file
37
cmd/stat/stat.go
Normal file
@ -0,0 +1,37 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"os"
|
||||
|
||||
"github.com/fd0/khepri"
|
||||
)
|
||||
|
||||
func main() {
|
||||
if len(os.Args) == 1 {
|
||||
fmt.Printf("usage: %s [file] [file] [...]\n", os.Args[0])
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
for _, path := range os.Args[1:] {
|
||||
fmt.Printf("lstat %s\n", path)
|
||||
|
||||
fi, err := os.Lstat(path)
|
||||
if err != nil {
|
||||
fmt.Fprintf(os.Stderr, "%v", err)
|
||||
continue
|
||||
}
|
||||
|
||||
node, err := khepri.NodeFromFileInfo(path, fi)
|
||||
if err != nil {
|
||||
fmt.Printf("err: %v\n", err)
|
||||
}
|
||||
|
||||
buf, err := json.MarshalIndent(node, "", " ")
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
fmt.Printf("%s\n", string(buf))
|
||||
}
|
||||
}
|
222
cmd/tree_serialise/main.go
Normal file
222
cmd/tree_serialise/main.go
Normal file
@ -0,0 +1,222 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"crypto/sha256"
|
||||
"encoding/hex"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"strings"
|
||||
)
|
||||
|
||||
func check(err error) {
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
}
|
||||
|
||||
// References content within a repository.
|
||||
type ID []byte
|
||||
|
||||
func (id ID) String() string {
|
||||
return hex.EncodeToString(id)
|
||||
}
|
||||
|
||||
func (id ID) MarshalJSON() ([]byte, error) {
|
||||
return json.Marshal(id.String())
|
||||
}
|
||||
|
||||
func (id *ID) UnmarshalJSON(b []byte) error {
|
||||
var s string
|
||||
err := json.Unmarshal(b, &s)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
*id = make([]byte, len(s)/2)
|
||||
_, err = hex.Decode(*id, []byte(s))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// ParseID converts the given string to an ID.
|
||||
func ParseID(s string) ID {
|
||||
b, err := hex.DecodeString(s)
|
||||
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
return ID(b)
|
||||
}
|
||||
|
||||
type Repository interface {
|
||||
Store([]byte) ID
|
||||
Get(ID) []byte
|
||||
}
|
||||
|
||||
type Repo map[string][]byte
|
||||
|
||||
func (r Repo) Store(buf []byte) ID {
|
||||
hash := sha256.New()
|
||||
_, err := hash.Write(buf)
|
||||
check(err)
|
||||
|
||||
id := ID(hash.Sum([]byte{}))
|
||||
r[id.String()] = buf
|
||||
|
||||
return id
|
||||
}
|
||||
|
||||
func (r Repo) Get(id ID) []byte {
|
||||
buf, ok := r[id.String()]
|
||||
if !ok {
|
||||
panic("no such id")
|
||||
}
|
||||
|
||||
return buf
|
||||
}
|
||||
|
||||
func (r Repo) Dump(wr io.Writer) {
|
||||
for k, v := range r {
|
||||
_, err := wr.Write([]byte(k))
|
||||
check(err)
|
||||
_, err = wr.Write([]byte(":"))
|
||||
check(err)
|
||||
_, err = wr.Write(v)
|
||||
check(err)
|
||||
_, err = wr.Write([]byte("\n"))
|
||||
check(err)
|
||||
}
|
||||
}
|
||||
|
||||
type Tree struct {
|
||||
Nodes []*Node `json:"nodes,omitempty"`
|
||||
}
|
||||
|
||||
type Node struct {
|
||||
Name string `json:"name"`
|
||||
Tree *Tree `json:"tree,omitempty"`
|
||||
Subtree ID `json:"subtree,omitempty"`
|
||||
Content ID `json:"content,omitempty"`
|
||||
}
|
||||
|
||||
func (tree Tree) Save(repo Repository) ID {
|
||||
// fmt.Printf("nodes: %#v\n", tree.Nodes)
|
||||
for _, node := range tree.Nodes {
|
||||
if node.Tree != nil {
|
||||
node.Subtree = node.Tree.Save(repo)
|
||||
node.Tree = nil
|
||||
}
|
||||
}
|
||||
|
||||
buf, err := json.Marshal(tree)
|
||||
check(err)
|
||||
|
||||
return repo.Store(buf)
|
||||
}
|
||||
|
||||
func (tree Tree) PP(wr io.Writer) {
|
||||
tree.pp(0, wr)
|
||||
}
|
||||
|
||||
func (tree Tree) pp(indent int, wr io.Writer) {
|
||||
for _, node := range tree.Nodes {
|
||||
if node.Tree != nil {
|
||||
fmt.Printf("%s%s/\n", strings.Repeat(" ", indent), node.Name)
|
||||
node.Tree.pp(indent+1, wr)
|
||||
} else {
|
||||
fmt.Printf("%s%s [%s]\n", strings.Repeat(" ", indent), node.Name, node.Content)
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
func create_tree(path string) *Tree {
|
||||
dir, err := os.Open(path)
|
||||
check(err)
|
||||
|
||||
entries, err := dir.Readdir(-1)
|
||||
check(err)
|
||||
|
||||
tree := &Tree{
|
||||
Nodes: make([]*Node, 0, len(entries)),
|
||||
}
|
||||
|
||||
for _, entry := range entries {
|
||||
node := &Node{}
|
||||
node.Name = entry.Name()
|
||||
|
||||
if !entry.Mode().IsDir() && entry.Mode()&os.ModeType != 0 {
|
||||
fmt.Fprintf(os.Stderr, "skipping %q\n", filepath.Join(path, entry.Name()))
|
||||
continue
|
||||
}
|
||||
|
||||
tree.Nodes = append(tree.Nodes, node)
|
||||
|
||||
if entry.IsDir() {
|
||||
node.Tree = create_tree(filepath.Join(path, entry.Name()))
|
||||
continue
|
||||
}
|
||||
|
||||
file, err := os.Open(filepath.Join(path, entry.Name()))
|
||||
defer file.Close()
|
||||
check(err)
|
||||
|
||||
hash := sha256.New()
|
||||
io.Copy(hash, file)
|
||||
|
||||
node.Content = hash.Sum([]byte{})
|
||||
}
|
||||
|
||||
return tree
|
||||
}
|
||||
|
||||
func load_tree(repo Repository, id ID) *Tree {
|
||||
tree := &Tree{}
|
||||
|
||||
buf := repo.Get(id)
|
||||
json.Unmarshal(buf, tree)
|
||||
|
||||
for _, node := range tree.Nodes {
|
||||
if node.Subtree != nil {
|
||||
node.Tree = load_tree(repo, node.Subtree)
|
||||
node.Subtree = nil
|
||||
}
|
||||
}
|
||||
|
||||
return tree
|
||||
}
|
||||
|
||||
func main() {
|
||||
repo := make(Repo)
|
||||
|
||||
tree := create_tree(os.Args[1])
|
||||
// encoder := json.NewEncoder(os.Stdout)
|
||||
// fmt.Println("---------------------------")
|
||||
// encoder.Encode(tree)
|
||||
// fmt.Println("---------------------------")
|
||||
|
||||
id := tree.Save(repo)
|
||||
|
||||
// for k, v := range repo {
|
||||
// fmt.Printf("%s: %s\n", k, v)
|
||||
// }
|
||||
|
||||
// fmt.Println("---------------------------")
|
||||
|
||||
tree2 := load_tree(repo, id)
|
||||
tree2.PP(os.Stdout)
|
||||
// encoder.Encode(tree2)
|
||||
|
||||
// dumpfile, err := os.Create("dump")
|
||||
// defer dumpfile.Close()
|
||||
// check(err)
|
||||
|
||||
// repo.Dump(dumpfile)
|
||||
}
|
@ -0,0 +1 @@
|
||||
{}
|
@ -0,0 +1 @@
|
||||
{"nodes":[{"name":"blobs","type":"dir","mode":2147484096,"mtime":"2014-08-11T19:51:11.894770622+02:00","atime":"2014-08-11T19:51:11.894770622+02:00","ctime":"2014-08-11T19:51:11.894770622+02:00","uid":1000,"gid":100,"user":"fd0","inode":428349318,"subtree":"44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a"},{"name":"refs","type":"dir","mode":2147484096,"mtime":"2014-08-11T19:51:11.894770622+02:00","atime":"2014-08-11T19:51:11.894770622+02:00","ctime":"2014-08-11T19:51:11.894770622+02:00","uid":1000,"gid":100,"user":"fd0","inode":4883656,"subtree":"44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a"},{"name":"tmp","type":"dir","mode":2147484096,"mtime":"2014-08-11T19:51:11.894770622+02:00","atime":"2014-08-11T19:51:11.894770622+02:00","ctime":"2014-08-11T19:51:11.894770622+02:00","uid":1000,"gid":100,"user":"fd0","inode":169971890,"subtree":"44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a"}]}
|
@ -0,0 +1 @@
|
||||
{"nodes":[{"name":"main.go","type":"file","mode":420,"mtime":"2014-08-10T23:18:15.815999516+02:00","atime":"2014-08-10T23:18:15.815999516+02:00","ctime":"2014-08-10T23:18:15.819332884+02:00","uid":1000,"gid":100,"user":"fd0","inode":193352413,"size":1181,"links":1,"content":"c45d3975908245296eb5730cf4bbbe9d8c39b0736658b5df9beada0739d40569"},{"name":"khepri-repo","type":"dir","mode":2147484096,"mtime":"2014-08-11T19:51:11.894770622+02:00","atime":"2014-08-11T19:51:11.894770622+02:00","ctime":"2014-08-11T19:51:11.894770622+02:00","uid":1000,"gid":100,"user":"fd0","inode":275443328,"subtree":"655ee6b9ff7fb7324f1e8566eca49c67d251459787765f9c5c6af513e3db0c72"}]}
|
69
cmd/tree_test/main.go
Normal file
69
cmd/tree_test/main.go
Normal file
@ -0,0 +1,69 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
"strings"
|
||||
|
||||
"github.com/fd0/khepri"
|
||||
)
|
||||
|
||||
func check(err error) {
|
||||
if err == nil {
|
||||
return
|
||||
}
|
||||
|
||||
fmt.Fprintf(os.Stderr, "error: %v\n", err)
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
func save(repo *khepri.Repository, path string) {
|
||||
tree, err := khepri.NewTreeFromPath(repo, path)
|
||||
|
||||
check(err)
|
||||
|
||||
id, err := tree.Save(repo)
|
||||
|
||||
fmt.Printf("saved tree as %s\n", id)
|
||||
}
|
||||
|
||||
func restore(repo *khepri.Repository, idstr string) {
|
||||
id, err := khepri.ParseID(idstr)
|
||||
check(err)
|
||||
|
||||
tree, err := khepri.NewTreeFromRepo(repo, id)
|
||||
check(err)
|
||||
|
||||
walk(0, tree)
|
||||
}
|
||||
|
||||
func walk(indent int, tree *khepri.Tree) {
|
||||
for _, node := range tree.Nodes {
|
||||
if node.Type == "dir" {
|
||||
fmt.Printf("%s%s:%s/\n", strings.Repeat(" ", indent), node.Type, node.Name)
|
||||
walk(indent+1, node.Tree)
|
||||
} else {
|
||||
fmt.Printf("%s%s:%s\n", strings.Repeat(" ", indent), node.Type, node.Name)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func main() {
|
||||
if len(os.Args) != 3 {
|
||||
fmt.Fprintf(os.Stderr, "usage: %s [save|restore] DIR\n", os.Args[0])
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
command := os.Args[1]
|
||||
arg := os.Args[2]
|
||||
|
||||
repo, err := khepri.NewRepository("khepri-repo")
|
||||
check(err)
|
||||
|
||||
switch command {
|
||||
case "save":
|
||||
save(repo, arg)
|
||||
case "restore":
|
||||
restore(repo, arg)
|
||||
}
|
||||
}
|
@ -31,9 +31,11 @@ func (n Name) Encode() string {
|
||||
return url.QueryEscape(string(n))
|
||||
}
|
||||
|
||||
type HashFunc func() hash.Hash
|
||||
|
||||
type Repository struct {
|
||||
path string
|
||||
hash func() hash.Hash
|
||||
hash HashFunc
|
||||
}
|
||||
|
||||
type Type int
|
||||
@ -99,6 +101,11 @@ func (r *Repository) create() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// SetHash changes the hash function used for deriving IDs. Default is SHA256.
|
||||
func (r *Repository) SetHash(h HashFunc) {
|
||||
r.hash = h
|
||||
}
|
||||
|
||||
// Path returns the directory used for this repository.
|
||||
func (r *Repository) Path() string {
|
||||
return r.path
|
||||
|
21
snapshot.go
21
snapshot.go
@ -2,6 +2,7 @@ package khepri
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"os"
|
||||
"os/user"
|
||||
"time"
|
||||
@ -9,12 +10,14 @@ import (
|
||||
|
||||
type Snapshot struct {
|
||||
Time time.Time `json:"time"`
|
||||
TreeID ID `json:"tree"`
|
||||
Content ID `json:"content"`
|
||||
Tree *Tree `json:"-"`
|
||||
Dir string `json:"dir"`
|
||||
Hostname string `json:"hostname,omitempty"`
|
||||
Username string `json:"username,omitempty"`
|
||||
UID string `json:"uid,omitempty"`
|
||||
GID string `json:"gid,omitempty"`
|
||||
id ID `json:omit`
|
||||
}
|
||||
|
||||
func NewSnapshot(dir string) *Snapshot {
|
||||
@ -39,7 +42,7 @@ func NewSnapshot(dir string) *Snapshot {
|
||||
}
|
||||
|
||||
func (sn *Snapshot) Save(repo *Repository) (ID, error) {
|
||||
if sn.TreeID == nil {
|
||||
if sn.Content == nil {
|
||||
panic("Snapshot.Save() called with nil tree id")
|
||||
}
|
||||
|
||||
@ -59,7 +62,9 @@ func (sn *Snapshot) Save(repo *Repository) (ID, error) {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return <-id_ch, nil
|
||||
sn.id = <-id_ch
|
||||
|
||||
return sn.id, nil
|
||||
}
|
||||
|
||||
func LoadSnapshot(repo *Repository, id ID) (*Snapshot, error) {
|
||||
@ -78,5 +83,15 @@ func LoadSnapshot(repo *Repository, id ID) (*Snapshot, error) {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
sn.id = id
|
||||
|
||||
return sn, nil
|
||||
}
|
||||
|
||||
func (sn *Snapshot) ID() ID {
|
||||
return sn.id
|
||||
}
|
||||
|
||||
func (sn *Snapshot) String() string {
|
||||
return fmt.Sprintf("<Snapshot of %q at %s>", sn.Dir, sn.Time.Format(time.RFC822Z))
|
||||
}
|
||||
|
@ -17,7 +17,7 @@ func TestSnapshot(t *testing.T) {
|
||||
}()
|
||||
|
||||
sn := khepri.NewSnapshot("/home/foobar")
|
||||
sn.TreeID, err = khepri.ParseID("c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2")
|
||||
sn.Content, err = khepri.ParseID("c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2")
|
||||
ok(t, err)
|
||||
sn.Time, err = time.Parse(time.RFC3339Nano, "2014-08-03T17:49:05.378595539+02:00")
|
||||
ok(t, err)
|
||||
|
Binary file not shown.
226
tree.go
226
tree.go
@ -2,54 +2,238 @@ package khepri
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"os/user"
|
||||
"path/filepath"
|
||||
"strconv"
|
||||
"syscall"
|
||||
"time"
|
||||
)
|
||||
|
||||
type Tree struct {
|
||||
Nodes []Node `json:"nodes"`
|
||||
Nodes []*Node `json:"nodes,omitempty"`
|
||||
}
|
||||
|
||||
type Node struct {
|
||||
Name string `json:"name"`
|
||||
Mode os.FileMode `json:"mode"`
|
||||
ModTime time.Time `json:"mtime"`
|
||||
AccessTime time.Time `json:"atime"`
|
||||
User uint32 `json:"user"`
|
||||
Group uint32 `json:"group"`
|
||||
Type string `json:"type"`
|
||||
Mode os.FileMode `json:"mode,omitempty"`
|
||||
ModTime time.Time `json:"mtime,omitempty"`
|
||||
AccessTime time.Time `json:"atime,omitempty"`
|
||||
ChangeTime time.Time `json:"ctime,omitempty"`
|
||||
UID uint32 `json:"uid"`
|
||||
GID uint32 `json:"gid"`
|
||||
User string `json:"user,omitempty"`
|
||||
Group string `json:"group,omitempty"`
|
||||
Inode uint64 `json:"inode,omitempty"`
|
||||
Size uint64 `json:"size,omitempty"`
|
||||
Links uint64 `json:"links,omitempty"`
|
||||
LinkTarget string `json:"linktarget,omitempty"`
|
||||
Device uint64 `json:"device,omitempty"`
|
||||
Content ID `json:"content,omitempty"`
|
||||
Subtree ID `json:"subtree,omitempty"`
|
||||
Tree *Tree `json:"-"`
|
||||
}
|
||||
|
||||
func NewTree() *Tree {
|
||||
return &Tree{
|
||||
Nodes: []Node{},
|
||||
Nodes: []*Node{},
|
||||
}
|
||||
}
|
||||
|
||||
func (t *Tree) Restore(r io.Reader) error {
|
||||
dec := json.NewDecoder(r)
|
||||
return dec.Decode(t)
|
||||
func NewTreeFromPath(repo *Repository, dir string) (*Tree, error) {
|
||||
fd, err := os.Open(dir)
|
||||
defer fd.Close()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
entries, err := fd.Readdir(-1)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
tree := &Tree{
|
||||
Nodes: make([]*Node, 0, len(entries)),
|
||||
}
|
||||
|
||||
for _, entry := range entries {
|
||||
path := filepath.Join(dir, entry.Name())
|
||||
node, err := NodeFromFileInfo(path, entry)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
tree.Nodes = append(tree.Nodes, node)
|
||||
|
||||
if entry.IsDir() {
|
||||
node.Tree, err = NewTreeFromPath(repo, path)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
if node.Type == "file" {
|
||||
file, err := os.Open(path)
|
||||
defer file.Close()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
wr, idch, err := repo.Create(TYPE_BLOB)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
io.Copy(wr, file)
|
||||
err = wr.Close()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
node.Content = <-idch
|
||||
}
|
||||
}
|
||||
|
||||
return tree, nil
|
||||
}
|
||||
|
||||
func (t *Tree) Save(w io.Writer) error {
|
||||
enc := json.NewEncoder(w)
|
||||
return enc.Encode(t)
|
||||
func (tree *Tree) Save(repo *Repository) (ID, error) {
|
||||
for _, node := range tree.Nodes {
|
||||
if node.Tree != nil {
|
||||
var err error
|
||||
node.Subtree, err = node.Tree.Save(repo)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
buf, err := json.Marshal(tree)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
wr, idch, err := repo.Create(TYPE_BLOB)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
_, err = wr.Write(buf)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = wr.Close()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return <-idch, nil
|
||||
}
|
||||
|
||||
func NodeFromFileInfo(fi os.FileInfo) Node {
|
||||
node := Node{
|
||||
func NewTreeFromRepo(repo *Repository, id ID) (*Tree, error) {
|
||||
tree := NewTree()
|
||||
|
||||
rd, err := repo.Get(TYPE_BLOB, id)
|
||||
defer rd.Close()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
decoder := json.NewDecoder(rd)
|
||||
|
||||
err = decoder.Decode(tree)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
for _, node := range tree.Nodes {
|
||||
if node.Subtree != nil {
|
||||
node.Tree, err = NewTreeFromRepo(repo, node.Subtree)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return tree, nil
|
||||
}
|
||||
|
||||
// TODO: make sure that node.Type is valid
|
||||
|
||||
func (node *Node) fill_extra(path string, fi os.FileInfo) (err error) {
|
||||
stat, ok := fi.Sys().(*syscall.Stat_t)
|
||||
if !ok {
|
||||
return
|
||||
}
|
||||
|
||||
node.ChangeTime = time.Unix(stat.Ctim.Unix())
|
||||
node.AccessTime = time.Unix(stat.Atim.Unix())
|
||||
node.UID = stat.Uid
|
||||
node.GID = stat.Gid
|
||||
|
||||
if u, nil := user.LookupId(strconv.Itoa(int(stat.Uid))); err == nil {
|
||||
node.User = u.Username
|
||||
}
|
||||
|
||||
// TODO: implement getgrnam()
|
||||
// if g, nil := user.LookupId(strconv.Itoa(int(stat.Uid))); err == nil {
|
||||
// node.User = u.Username
|
||||
// }
|
||||
|
||||
node.Inode = stat.Ino
|
||||
|
||||
switch node.Type {
|
||||
case "file":
|
||||
node.Size = uint64(stat.Size)
|
||||
node.Links = stat.Nlink
|
||||
case "dir":
|
||||
// nothing to do
|
||||
case "symlink":
|
||||
node.LinkTarget, err = os.Readlink(path)
|
||||
case "dev":
|
||||
node.Device = stat.Rdev
|
||||
case "chardev":
|
||||
node.Device = stat.Rdev
|
||||
case "fifo":
|
||||
// nothing to do
|
||||
case "socket":
|
||||
// nothing to do
|
||||
default:
|
||||
panic(fmt.Sprintf("invalid node type %q", node.Type))
|
||||
}
|
||||
|
||||
return err
|
||||
}
|
||||
|
||||
func NodeFromFileInfo(path string, fi os.FileInfo) (*Node, error) {
|
||||
node := &Node{
|
||||
Name: fi.Name(),
|
||||
Mode: fi.Mode(),
|
||||
Mode: fi.Mode() & os.ModePerm,
|
||||
ModTime: fi.ModTime(),
|
||||
}
|
||||
|
||||
if stat, ok := fi.Sys().(*syscall.Stat_t); ok {
|
||||
node.User = stat.Uid
|
||||
node.Group = stat.Gid
|
||||
node.AccessTime = time.Unix(stat.Atim.Unix())
|
||||
switch fi.Mode() & (os.ModeType | os.ModeCharDevice) {
|
||||
case 0:
|
||||
node.Type = "file"
|
||||
case os.ModeDir:
|
||||
node.Type = "dir"
|
||||
case os.ModeSymlink:
|
||||
node.Type = "symlink"
|
||||
case os.ModeDevice | os.ModeCharDevice:
|
||||
node.Type = "chardev"
|
||||
case os.ModeDevice:
|
||||
node.Type = "dev"
|
||||
case os.ModeNamedPipe:
|
||||
node.Type = "fifo"
|
||||
case os.ModeSocket:
|
||||
node.Type = "socket"
|
||||
}
|
||||
|
||||
return node
|
||||
err := node.fill_extra(path, fi)
|
||||
return node, err
|
||||
}
|
||||
|
72
tree_test.go
72
tree_test.go
@ -1,72 +0,0 @@
|
||||
package khepri_test
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/fd0/khepri"
|
||||
)
|
||||
|
||||
func parseTime(str string) time.Time {
|
||||
t, err := time.Parse(time.RFC3339Nano, str)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
return t
|
||||
}
|
||||
|
||||
func TestTree(t *testing.T) {
|
||||
var tree = &khepri.Tree{
|
||||
Nodes: []khepri.Node{
|
||||
khepri.Node{
|
||||
Name: "foobar",
|
||||
Mode: 0755,
|
||||
ModTime: parseTime("2014-04-20T22:16:54.161401+02:00"),
|
||||
AccessTime: parseTime("2014-04-21T22:16:54.161401+02:00"),
|
||||
User: 1000,
|
||||
Group: 1001,
|
||||
Content: []byte{0x41, 0x42, 0x43},
|
||||
},
|
||||
khepri.Node{
|
||||
Name: "baz",
|
||||
Mode: 0755,
|
||||
User: 1000,
|
||||
ModTime: parseTime("2014-04-20T22:16:54.161401+02:00"),
|
||||
AccessTime: parseTime("2014-04-21T22:16:54.161401+02:00"),
|
||||
Group: 1001,
|
||||
Content: []byte("\xde\xad\xbe\xef\xba\xdc\x0d\xe0"),
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
const raw = `{"nodes":[{"name":"foobar","mode":493,"mtime":"2014-04-20T22:16:54.161401+02:00","atime":"2014-04-21T22:16:54.161401+02:00","user":1000,"group":1001,"content":"414243"},{"name":"baz","mode":493,"mtime":"2014-04-20T22:16:54.161401+02:00","atime":"2014-04-21T22:16:54.161401+02:00","user":1000,"group":1001,"content":"deadbeefbadc0de0"}]}`
|
||||
|
||||
// test save
|
||||
buf := &bytes.Buffer{}
|
||||
|
||||
tree.Save(buf)
|
||||
equals(t, raw, strings.TrimRight(buf.String(), "\n"))
|
||||
|
||||
tree2 := new(khepri.Tree)
|
||||
err := tree2.Restore(buf)
|
||||
ok(t, err)
|
||||
equals(t, tree, tree2)
|
||||
|
||||
// test nodes for equality
|
||||
for i, n := range tree.Nodes {
|
||||
equals(t, n.Content, tree2.Nodes[i].Content)
|
||||
}
|
||||
|
||||
// test restore
|
||||
buf = bytes.NewBufferString(raw)
|
||||
|
||||
tree2 = new(khepri.Tree)
|
||||
err = tree2.Restore(buf)
|
||||
ok(t, err)
|
||||
|
||||
// test if tree has correctly been restored
|
||||
equals(t, tree, tree2)
|
||||
}
|
5
zerrors_linux.go
Normal file
5
zerrors_linux.go
Normal file
@ -0,0 +1,5 @@
|
||||
package khepri
|
||||
|
||||
// Add constant O_PATH missing from Go1.3, will be added to Go1.4 according to
|
||||
// https://code.google.com/p/go/issues/detail?id=7830
|
||||
const O_PATH = 010000000
|
Loading…
Reference in New Issue
Block a user