potyarkin/restic
1
0
Fork 0
forked from TrueCloudLab/restic
Code Pull requests Activity

backend: Improve Save()

Browse source 
As mentioned in issue [#1560](https://github.com/restic/restic/pull/1560#issuecomment-364689346)
this changes the signature for `backend.Save()`. It now takes a
parameter of interface type `RewindReader`, so that the backend
implementations or our `RetryBackend` middleware can reset the reader to
the beginning and then retry an upload operation.

The `RewindReader` interface also provides a `Length()` method, which is
used in the backend to get the size of the data to be saved. This
removes several ugly hacks we had to do to pull the size back out of the
`io.Reader` passed to `Save()` before. In the `s3` and `rest` backend
this is actively used.
This commit is contained in:
Alexander Neumann 2018-03-03 14:20:54 +01:00
parent 58306bfabb
commit 99f7fd74e3
29 changed files with 387 additions and 204 deletions
Download patch file Download diff file Expand all files Collapse all files

6
internal/backend/swift/swift.go
View file

@ -156,8 +156,8 @@ func (be *beSwift) openReader(ctx context.Context, h restic.Handle, length int,
}
// Save stores data in the backend at the handle.
func (be *beSwift) Save(ctx context.Context, h restic.Handle, rd io.Reader) (err error) {
if err = h.Valid(); err != nil {
func (be *beSwift) Save(ctx context.Context, h restic.Handle, rd restic.RewindReader) error {
if err := h.Valid(); err != nil {
return err
}
@ -171,7 +171,7 @@ func (be *beSwift) Save(ctx context.Context, h restic.Handle, rd io.Reader) (err
encoding := "binary/octet-stream"
debug.Log("PutObject(%v, %v, %v)", be.container, objName, encoding)
_, err = be.conn.ObjectPut(be.container, objName, rd, true, "", encoding, nil)
_, err := be.conn.ObjectPut(be.container, objName, rd, true, "", encoding, nil)
debug.Log("%v, err %#v", objName, err)
return errors.Wrap(err, "client.PutObject")