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Introduced repository.DownloadAndHash helper

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Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
This commit is contained in:
Igor Fedorenko 2018-02-11 22:41:59 -05:00
parent d58ae43317
commit ab040d8811
3 changed files with 40 additions and 48 deletions
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25
internal/repository/repack.go
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@ -2,14 +2,11 @@ package repository
import (
"context"
"crypto/sha256"
"fmt"
"io"
"os"
"github.com/restic/restic/internal/debug"
"github.com/restic/restic/internal/fs"
"github.com/restic/restic/internal/hashing"
"github.com/restic/restic/internal/pack"
"github.com/restic/restic/internal/restic"
@ -27,27 +24,7 @@ func Repack(ctx context.Context, repo restic.Repository, packs restic.IDSet, kee
// load the complete pack into a temp file
h := restic.Handle{Type: restic.DataFile, Name: packID.String()}
tempfile, err := fs.TempFile("", "restic-temp-repack-")
if err != nil {
return nil, errors.Wrap(err, "TempFile")
}
// TODO very similar code in checker, consider moving to utils.go
var hash restic.ID
var packLength int64
err = repo.Backend().Load(ctx, h, 0, 0, func(rd io.Reader) (ierr error) {
_, ierr = tempfile.Seek(0, io.SeekStart)
if ierr == nil {
ierr = tempfile.Truncate(0)
}
if ierr != nil {
return ierr
}
hrd := hashing.NewReader(rd, sha256.New())
packLength, ierr = io.Copy(tempfile, hrd)
hash = restic.IDFromHash(hrd.Sum(nil))
return ierr
})
tempfile, hash, packLength, err := DownloadAndHash(ctx, repo, h)
if err != nil {
return nil, errors.Wrap(err, "Repack")
}