TrueCloudLab/restic
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Add cache

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This commits adds rudimentary support for a cache directory, enabled by
default. The cache directory is created if it does not exist. The cache
is used if there's anything in it, newly created snapshot and index
files are written to the cache automatically.
This commit is contained in:
Alexander Neumann 2017-06-10 13:10:08 +02:00
parent 5ace41471e
commit 9be24a1c9f
14 changed files with 1020 additions and 3 deletions
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15
internal/repository/repository.go
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@ -23,6 +23,7 @@ type Repository struct {
key *crypto.Key
keyName string
idx *MasterIndex
restic.Cache
treePM *packerManager
dataPM *packerManager
@ -45,6 +46,16 @@ func (r *Repository) Config() restic.Config {
return r.cfg
}
// UseCache replaces the backend with the wrapped cache.
func (r *Repository) UseCache(c restic.Cache) {
if c == nil {
return
}
debug.Log("using cache")
r.Cache = c
r.be = c.Wrap(r.be)
}
// PrefixLength returns the number of bytes required so that all prefixes of
// all IDs of type t are unique.
func (r *Repository) PrefixLength(t restic.FileType) (int, error) {
@ -53,11 +64,11 @@ func (r *Repository) PrefixLength(t restic.FileType) (int, error) {
// LoadAndDecrypt loads and decrypts data identified by t and id from the
// backend.
func (r *Repository) LoadAndDecrypt(ctx context.Context, t restic.FileType, id restic.ID) ([]byte, error) {
func (r *Repository) LoadAndDecrypt(ctx context.Context, t restic.FileType, id restic.ID) (buf []byte, err error) {
debug.Log("load %v with id %v", t, id.Str())
h := restic.Handle{Type: t, Name: id.String()}
buf, err := backend.LoadAll(ctx, r.be, h)
buf, err = backend.LoadAll(ctx, r.be, h)
if err != nil {
debug.Log("error loading %v: %v", h, err)
return nil, err