TrueCloudLab/restic
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move Backend interface to backend package

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This commit is contained in:
Michael Eischer 2023-10-01 11:40:12 +02:00
parent ceb0774af1
commit 1b8a67fe76
105 changed files with 822 additions and 775 deletions
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46
internal/backend/rest/rest.go
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@ -11,16 +11,16 @@ import (
"path"
"strings"
"github.com/restic/restic/internal/backend"
"github.com/restic/restic/internal/backend/layout"
"github.com/restic/restic/internal/backend/location"
"github.com/restic/restic/internal/backend/util"
"github.com/restic/restic/internal/debug"
"github.com/restic/restic/internal/errors"
"github.com/restic/restic/internal/restic"
)
// make sure the rest backend implements restic.Backend
var _ restic.Backend = &Backend{}
// make sure the rest backend implements backend.Backend
var _ backend.Backend = &Backend{}
// Backend uses the REST protocol to access data stored on a server.
type Backend struct {
@ -65,7 +65,7 @@ func Create(ctx context.Context, cfg Config, rt http.RoundTripper) (*Backend, er
return nil, err
}
_, err = be.Stat(ctx, restic.Handle{Type: restic.ConfigFile})
_, err = be.Stat(ctx, backend.Handle{Type: backend.ConfigFile})
if err == nil {
return nil, errors.New("config file already exists")
}
@ -118,7 +118,7 @@ func (b *Backend) HasAtomicReplace() bool {
}
// Save stores data in the backend at the handle.
func (b *Backend) Save(ctx context.Context, h restic.Handle, rd restic.RewindReader) error {
func (b *Backend) Save(ctx context.Context, h backend.Handle, rd backend.RewindReader) error {
ctx, cancel := context.WithCancel(ctx)
defer cancel()
@ -157,7 +157,7 @@ func (b *Backend) Save(ctx context.Context, h restic.Handle, rd restic.RewindRea
// notExistError is returned whenever the requested file does not exist on the
// server.
type notExistError struct {
restic.Handle
backend.Handle
}
func (e *notExistError) Error() string {
@ -172,7 +172,7 @@ func (b *Backend) IsNotExist(err error) bool {
// Load runs fn with a reader that yields the contents of the file at h at the
// given offset.
func (b *Backend) Load(ctx context.Context, h restic.Handle, length int, offset int64, fn func(rd io.Reader) error) error {
func (b *Backend) Load(ctx context.Context, h backend.Handle, length int, offset int64, fn func(rd io.Reader) error) error {
r, err := b.openReader(ctx, h, length, offset)
if err != nil {
return err
@ -201,7 +201,7 @@ func (b *Backend) Load(ctx context.Context, h restic.Handle, length int, offset
return err
}
func (b *Backend) openReader(ctx context.Context, h restic.Handle, length int, offset int64) (io.ReadCloser, error) {
func (b *Backend) openReader(ctx context.Context, h backend.Handle, length int, offset int64) (io.ReadCloser, error) {
req, err := http.NewRequestWithContext(ctx, "GET", b.Filename(h), nil)
if err != nil {
return nil, errors.WithStack(err)
@ -238,37 +238,37 @@ func (b *Backend) openReader(ctx context.Context, h restic.Handle, length int, o
}
// Stat returns information about a blob.
func (b *Backend) Stat(ctx context.Context, h restic.Handle) (restic.FileInfo, error) {
func (b *Backend) Stat(ctx context.Context, h backend.Handle) (backend.FileInfo, error) {
req, err := http.NewRequestWithContext(ctx, http.MethodHead, b.Filename(h), nil)
if err != nil {
return restic.FileInfo{}, errors.WithStack(err)
return backend.FileInfo{}, errors.WithStack(err)
}
req.Header.Set("Accept", ContentTypeV2)
resp, err := b.client.Do(req)
if err != nil {
return restic.FileInfo{}, errors.WithStack(err)
return backend.FileInfo{}, errors.WithStack(err)
}
_, _ = io.Copy(io.Discard, resp.Body)
if err = resp.Body.Close(); err != nil {
return restic.FileInfo{}, errors.Wrap(err, "Close")
return backend.FileInfo{}, errors.Wrap(err, "Close")
}
if resp.StatusCode == http.StatusNotFound {
_ = resp.Body.Close()
return restic.FileInfo{}, &notExistError{h}
return backend.FileInfo{}, &notExistError{h}
}
if resp.StatusCode != http.StatusOK {
return restic.FileInfo{}, errors.Errorf("unexpected HTTP response (%v): %v", resp.StatusCode, resp.Status)
return backend.FileInfo{}, errors.Errorf("unexpected HTTP response (%v): %v", resp.StatusCode, resp.Status)
}
if resp.ContentLength < 0 {
return restic.FileInfo{}, errors.New("negative content length")
return backend.FileInfo{}, errors.New("negative content length")
}
bi := restic.FileInfo{
bi := backend.FileInfo{
Size: resp.ContentLength,
Name: h.Name,
}
@ -277,7 +277,7 @@ func (b *Backend) Stat(ctx context.Context, h restic.Handle) (restic.FileInfo, e
}
// Remove removes the blob with the given name and type.
func (b *Backend) Remove(ctx context.Context, h restic.Handle) error {
func (b *Backend) Remove(ctx context.Context, h backend.Handle) error {
req, err := http.NewRequestWithContext(ctx, "DELETE", b.Filename(h), nil)
if err != nil {
return errors.WithStack(err)
@ -309,8 +309,8 @@ func (b *Backend) Remove(ctx context.Context, h restic.Handle) error {
// List runs fn for each file in the backend which has the type t. When an
// error occurs (or fn returns an error), List stops and returns it.
func (b *Backend) List(ctx context.Context, t restic.FileType, fn func(restic.FileInfo) error) error {
url := b.Dirname(restic.Handle{Type: t})
func (b *Backend) List(ctx context.Context, t backend.FileType, fn func(backend.FileInfo) error) error {
url := b.Dirname(backend.Handle{Type: t})
if !strings.HasSuffix(url, "/") {
url += "/"
}
@ -346,7 +346,7 @@ func (b *Backend) List(ctx context.Context, t restic.FileType, fn func(restic.Fi
// listv1 uses the REST protocol v1, where a list HTTP request (e.g. `GET
// /data/`) only returns the names of the files, so we need to issue an HTTP
// HEAD request for each file.
func (b *Backend) listv1(ctx context.Context, t restic.FileType, resp *http.Response, fn func(restic.FileInfo) error) error {
func (b *Backend) listv1(ctx context.Context, t backend.FileType, resp *http.Response, fn func(backend.FileInfo) error) error {
debug.Log("parsing API v1 response")
dec := json.NewDecoder(resp.Body)
var list []string
@ -355,7 +355,7 @@ func (b *Backend) listv1(ctx context.Context, t restic.FileType, resp *http.Resp
}
for _, m := range list {
fi, err := b.Stat(ctx, restic.Handle{Name: m, Type: t})
fi, err := b.Stat(ctx, backend.Handle{Name: m, Type: t})
if err != nil {
return err
}
@ -380,7 +380,7 @@ func (b *Backend) listv1(ctx context.Context, t restic.FileType, resp *http.Resp
// listv2 uses the REST protocol v2, where a list HTTP request (e.g. `GET
// /data/`) returns the names and sizes of all files.
func (b *Backend) listv2(ctx context.Context, resp *http.Response, fn func(restic.FileInfo) error) error {
func (b *Backend) listv2(ctx context.Context, resp *http.Response, fn func(backend.FileInfo) error) error {
debug.Log("parsing API v2 response")
dec := json.NewDecoder(resp.Body)
@ -397,7 +397,7 @@ func (b *Backend) listv2(ctx context.Context, resp *http.Response, fn func(resti
return ctx.Err()
}
fi := restic.FileInfo{
fi := backend.FileInfo{
Name: item.Name,
Size: item.Size,
}