forked from TrueCloudLab/restic
92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
package dryrun
|
|
|
|
import (
|
|
"context"
|
|
"hash"
|
|
"io"
|
|
|
|
"github.com/restic/restic/internal/debug"
|
|
"github.com/restic/restic/internal/restic"
|
|
)
|
|
|
|
// Backend passes reads through to an underlying layer and accepts writes, but
|
|
// doesn't do anything. Also removes are ignored.
|
|
// So in fact, this backend silently ignores all operations that would modify
|
|
// the repo and does normal operations else.
|
|
// This is used for `backup --dry-run`.
|
|
type Backend struct {
|
|
b restic.Backend
|
|
}
|
|
|
|
// statically ensure that RetryBackend implements restic.Backend.
|
|
var _ restic.Backend = &Backend{}
|
|
|
|
// New returns a new backend that saves all data in a map in memory.
|
|
func New(be restic.Backend) *Backend {
|
|
b := &Backend{b: be}
|
|
debug.Log("created new dry backend")
|
|
return b
|
|
}
|
|
|
|
// Save adds new Data to the backend.
|
|
func (be *Backend) Save(ctx context.Context, h restic.Handle, rd restic.RewindReader) error {
|
|
if err := h.Valid(); err != nil {
|
|
return err
|
|
}
|
|
|
|
debug.Log("faked saving %v bytes at %v", rd.Length(), h)
|
|
|
|
// don't save anything, just return ok
|
|
return nil
|
|
}
|
|
|
|
// Remove deletes a file from the backend.
|
|
func (be *Backend) Remove(ctx context.Context, h restic.Handle) error {
|
|
return nil
|
|
}
|
|
|
|
func (be *Backend) Connections() uint {
|
|
return be.b.Connections()
|
|
}
|
|
|
|
// Location returns the location of the backend.
|
|
func (be *Backend) Location() string {
|
|
return "DRY:" + be.b.Location()
|
|
}
|
|
|
|
// Delete removes all data in the backend.
|
|
func (be *Backend) Delete(ctx context.Context) error {
|
|
return nil
|
|
}
|
|
|
|
func (be *Backend) Close() error {
|
|
return be.b.Close()
|
|
}
|
|
|
|
func (be *Backend) Hasher() hash.Hash {
|
|
return be.b.Hasher()
|
|
}
|
|
|
|
func (be *Backend) HasAtomicReplace() bool {
|
|
return be.b.HasAtomicReplace()
|
|
}
|
|
|
|
func (be *Backend) IsNotExist(err error) bool {
|
|
return be.b.IsNotExist(err)
|
|
}
|
|
|
|
func (be *Backend) List(ctx context.Context, t restic.FileType, fn func(restic.FileInfo) error) error {
|
|
return be.b.List(ctx, t, fn)
|
|
}
|
|
|
|
func (be *Backend) Load(ctx context.Context, h restic.Handle, length int, offset int64, fn func(io.Reader) error) error {
|
|
return be.b.Load(ctx, h, length, offset, fn)
|
|
}
|
|
|
|
func (be *Backend) Stat(ctx context.Context, h restic.Handle) (restic.FileInfo, error) {
|
|
return be.b.Stat(ctx, h)
|
|
}
|
|
|
|
func (be *Backend) Test(ctx context.Context, h restic.Handle) (bool, error) {
|
|
return be.b.Test(ctx, h)
|
|
}
|