mirror of
https://github.com/octoleo/restic.git
synced 2024-11-02 11:46:36 +00:00
split out decryptReader and packerManager
This commit is contained in:
Alexander Neumann
parent
d4b873ca76
commit
8209bb309b
36
repository/decrypt_read_closer.go
Normal file
36
repository/decrypt_read_closer.go
Normal file
@ -0,0 +1,36 @@
|
||||
package repository
|
||||
|
||||
import (
|
||||
"io"
|
||||
|
||||
"github.com/restic/restic/crypto"
|
||||
)
|
||||
|
||||
// decryptReadCloser couples an underlying reader with a DecryptReader and
|
||||
// implements io.ReadCloser. On Close(), both readers are closed.
|
||||
type decryptReadCloser struct {
|
||||
r io.ReadCloser
|
||||
dr io.ReadCloser
|
||||
}
|
||||
|
||||
func newDecryptReadCloser(key *crypto.Key, rd io.ReadCloser) (io.ReadCloser, error) {
|
||||
dr, err := crypto.DecryptFrom(key, rd)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &decryptReadCloser{r: rd, dr: dr}, nil
|
||||
}
|
||||
|
||||
func (dr *decryptReadCloser) Read(buf []byte) (int, error) {
|
||||
return dr.dr.Read(buf)
|
||||
}
|
||||
|
||||
func (dr *decryptReadCloser) Close() error {
|
||||
err := dr.dr.Close()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return dr.r.Close()
|
||||
}
|
||||
102
repository/packer_manager.go
Normal file
102
repository/packer_manager.go
Normal file
@ -0,0 +1,102 @@
|
||||
package repository
|
||||
|
||||
import (
|
||||
"sync"
|
||||
|
||||
"github.com/restic/chunker"
|
||||
"github.com/restic/restic/backend"
|
||||
"github.com/restic/restic/crypto"
|
||||
"github.com/restic/restic/debug"
|
||||
"github.com/restic/restic/pack"
|
||||
)
|
||||
|
||||
// packerManager keeps a list of open packs and creates new on demand.
|
||||
type packerManager struct {
|
||||
be backend.Backend
|
||||
key *crypto.Key
|
||||
pm sync.Mutex
|
||||
packs []*pack.Packer
|
||||
}
|
||||
|
||||
const minPackSize = 4 * chunker.MiB
|
||||
const maxPackSize = 16 * chunker.MiB
|
||||
const maxPackers = 200
|
||||
|
||||
// findPacker returns a packer for a new blob of size bytes. Either a new one is
|
||||
// created or one is returned that already has some blobs.
|
||||
func (r *packerManager) findPacker(size uint) (*pack.Packer, error) {
|
||||
r.pm.Lock()
|
||||
defer r.pm.Unlock()
|
||||
|
||||
// search for a suitable packer
|
||||
if len(r.packs) > 0 {
|
||||
debug.Log("Repo.findPacker", "searching packer for %d bytes\n", size)
|
||||
for i, p := range r.packs {
|
||||
if p.Size()+size < maxPackSize {
|
||||
debug.Log("Repo.findPacker", "found packer %v", p)
|
||||
// remove from list
|
||||
r.packs = append(r.packs[:i], r.packs[i+1:]...)
|
||||
return p, nil
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// no suitable packer found, return new
|
||||
blob, err := r.be.Create()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
debug.Log("Repo.findPacker", "create new pack %p for %d bytes", blob, size)
|
||||
return pack.NewPacker(r.key, blob), nil
|
||||
}
|
||||
|
||||
// insertPacker appends p to s.packs.
|
||||
func (r *packerManager) insertPacker(p *pack.Packer) {
|
||||
r.pm.Lock()
|
||||
defer r.pm.Unlock()
|
||||
|
||||
r.packs = append(r.packs, p)
|
||||
debug.Log("Repo.insertPacker", "%d packers\n", len(r.packs))
|
||||
}
|
||||
|
||||
// savePacker stores p in the backend.
|
||||
func (r *Repository) savePacker(p *pack.Packer) error {
|
||||
debug.Log("Repo.savePacker", "save packer with %d blobs\n", p.Count())
|
||||
_, err := p.Finalize()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// move file to the final location
|
||||
sid := p.ID()
|
||||
err = p.Writer().(backend.Blob).Finalize(backend.Data, sid.String())
|
||||
if err != nil {
|
||||
debug.Log("Repo.savePacker", "blob Finalize() error: %v", err)
|
||||
return err
|
||||
}
|
||||
|
||||
debug.Log("Repo.savePacker", "saved as %v", sid.Str())
|
||||
|
||||
// update blobs in the index
|
||||
for _, b := range p.Blobs() {
|
||||
debug.Log("Repo.savePacker", " updating blob %v to pack %v", b.ID.Str(), sid.Str())
|
||||
r.idx.Current().Store(PackedBlob{
|
||||
Type: b.Type,
|
||||
ID: b.ID,
|
||||
PackID: sid,
|
||||
Offset: b.Offset,
|
||||
Length: uint(b.Length),
|
||||
})
|
||||
r.idx.RemoveFromInFlight(b.ID)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// countPacker returns the number of open (unfinished) packers.
|
||||
func (r *packerManager) countPacker() int {
|
||||
r.pm.Lock()
|
||||
defer r.pm.Unlock()
|
||||
|
||||
return len(r.packs)
|
||||
}
|
||||
@ -9,9 +9,7 @@ import (
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"sync"
|
||||
|
||||
"github.com/restic/chunker"
|
||||
"github.com/restic/restic/backend"
|
||||
"github.com/restic/restic/crypto"
|
||||
"github.com/restic/restic/debug"
|
||||
@ -26,8 +24,7 @@ type Repository struct {
|
||||
keyName string
|
||||
idx *MasterIndex
|
||||
|
||||
pm sync.Mutex
|
||||
packs []*pack.Packer
|
||||
*packerManager
|
||||
}
|
||||
|
||||
// New returns a new repository with backend be.
|
||||
@ -35,6 +32,9 @@ func New(be backend.Backend) *Repository {
|
||||
return &Repository{
|
||||
be: be,
|
||||
idx: NewMasterIndex(),
|
||||
packerManager: &packerManager{
|
||||
be: be,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
@ -218,90 +218,6 @@ func (r *Repository) LookupBlobSize(id backend.ID) (uint, error) {
|
||||
return r.idx.LookupSize(id)
|
||||
}
|
||||
|
||||
const minPackSize = 4 * chunker.MiB
|
||||
const maxPackSize = 16 * chunker.MiB
|
||||
const maxPackers = 200
|
||||
|
||||
// findPacker returns a packer for a new blob of size bytes. Either a new one is
|
||||
// created or one is returned that already has some blobs.
|
||||
func (r *Repository) findPacker(size uint) (*pack.Packer, error) {
|
||||
r.pm.Lock()
|
||||
defer r.pm.Unlock()
|
||||
|
||||
// search for a suitable packer
|
||||
if len(r.packs) > 0 {
|
||||
debug.Log("Repo.findPacker", "searching packer for %d bytes\n", size)
|
||||
for i, p := range r.packs {
|
||||
if p.Size()+size < maxPackSize {
|
||||
debug.Log("Repo.findPacker", "found packer %v", p)
|
||||
// remove from list
|
||||
r.packs = append(r.packs[:i], r.packs[i+1:]...)
|
||||
return p, nil
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// no suitable packer found, return new
|
||||
blob, err := r.be.Create()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
debug.Log("Repo.findPacker", "create new pack %p for %d bytes", blob, size)
|
||||
return pack.NewPacker(r.key, blob), nil
|
||||
}
|
||||
|
||||
// insertPacker appends p to s.packs.
|
||||
func (r *Repository) insertPacker(p *pack.Packer) {
|
||||
r.pm.Lock()
|
||||
defer r.pm.Unlock()
|
||||
|
||||
r.packs = append(r.packs, p)
|
||||
debug.Log("Repo.insertPacker", "%d packers\n", len(r.packs))
|
||||
}
|
||||
|
||||
// savePacker stores p in the backend.
|
||||
func (r *Repository) savePacker(p *pack.Packer) error {
|
||||
debug.Log("Repo.savePacker", "save packer with %d blobs\n", p.Count())
|
||||
_, err := p.Finalize()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// move file to the final location
|
||||
sid := p.ID()
|
||||
err = p.Writer().(backend.Blob).Finalize(backend.Data, sid.String())
|
||||
if err != nil {
|
||||
debug.Log("Repo.savePacker", "blob Finalize() error: %v", err)
|
||||
return err
|
||||
}
|
||||
|
||||
debug.Log("Repo.savePacker", "saved as %v", sid.Str())
|
||||
|
||||
// update blobs in the index
|
||||
var packedBlobs []PackedBlob
|
||||
for _, b := range p.Blobs() {
|
||||
packedBlobs = append(packedBlobs, PackedBlob{
|
||||
Type: b.Type,
|
||||
ID: b.ID,
|
||||
PackID: sid,
|
||||
Offset: b.Offset,
|
||||
Length: uint(b.Length),
|
||||
})
|
||||
r.idx.RemoveFromInFlight(b.ID)
|
||||
}
|
||||
r.idx.Current().StoreBlobs(packedBlobs)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// countPacker returns the number of open (unfinished) packers.
|
||||
func (r *Repository) countPacker() int {
|
||||
r.pm.Lock()
|
||||
defer r.pm.Unlock()
|
||||
|
||||
return len(r.packs)
|
||||
}
|
||||
|
||||
// SaveAndEncrypt encrypts data and stores it to the backend as type t. If data is small
|
||||
// enough, it will be packed together with other small blobs.
|
||||
func (r *Repository) SaveAndEncrypt(t pack.BlobType, data []byte, id *backend.ID) (backend.ID, error) {
|
||||
@ -628,35 +544,6 @@ func LoadIndex(repo *Repository, id string) (*Index, error) {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// decryptReadCloser couples an underlying reader with a DecryptReader and
|
||||
// implements io.ReadCloser. On Close(), both readers are closed.
|
||||
type decryptReadCloser struct {
|
||||
r io.ReadCloser
|
||||
dr io.ReadCloser
|
||||
}
|
||||
|
||||
func newDecryptReadCloser(key *crypto.Key, rd io.ReadCloser) (io.ReadCloser, error) {
|
||||
dr, err := crypto.DecryptFrom(key, rd)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &decryptReadCloser{r: rd, dr: dr}, nil
|
||||
}
|
||||
|
||||
func (dr *decryptReadCloser) Read(buf []byte) (int, error) {
|
||||
return dr.dr.Read(buf)
|
||||
}
|
||||
|
||||
func (dr *decryptReadCloser) Close() error {
|
||||
err := dr.dr.Close()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return dr.r.Close()
|
||||
}
|
||||
|
||||
// GetDecryptReader opens the file id stored in the backend and returns a
|
||||
// reader that yields the decrypted content. The reader must be closed.
|
||||
func (r *Repository) GetDecryptReader(t backend.Type, id string) (io.ReadCloser, error) {
|
||||
@ -677,6 +564,7 @@ func (r *Repository) SearchKey(password string) error {
|
||||
}
|
||||
|
||||
r.key = key.master
|
||||
r.packerManager.key = key.master
|
||||
r.keyName = key.Name()
|
||||
r.Config, err = LoadConfig(r)
|
||||
return err
|
||||
@ -699,6 +587,7 @@ func (r *Repository) Init(password string) error {
|
||||
}
|
||||
|
||||
r.key = key.master
|
||||
r.packerManager.key = key.master
|
||||
r.keyName = key.Name()
|
||||
r.Config, err = CreateConfig(r)
|
||||
return err
|
||||
|
||||
Loading…
Reference in New Issue
Block a user