mirror of
https://github.com/octoleo/restic.git
synced 2024-12-22 19:08:55 +00:00
67 lines
1.0 KiB
Go
67 lines
1.0 KiB
Go
package khepri
|
|
|
|
import (
|
|
"io"
|
|
"os"
|
|
)
|
|
|
|
type createObject struct {
|
|
repo *Repository
|
|
|
|
tpe Type
|
|
|
|
hw HashingWriter
|
|
file *os.File
|
|
|
|
ch chan ID
|
|
}
|
|
|
|
func (repo *Repository) Create(t Type) (io.WriteCloser, <-chan ID, error) {
|
|
obj := &createObject{
|
|
repo: repo,
|
|
tpe: t,
|
|
ch: make(chan ID, 1),
|
|
}
|
|
|
|
// save contents to tempfile in repository, hash while writing
|
|
var err error
|
|
obj.file, err = obj.repo.tempFile()
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
// create hashing writer
|
|
obj.hw = NewHashingWriter(obj.file, obj.repo.hash)
|
|
|
|
return obj, obj.ch, nil
|
|
}
|
|
|
|
func (obj *createObject) Write(data []byte) (int, error) {
|
|
if obj.hw == nil {
|
|
panic("createObject: already closed!")
|
|
}
|
|
|
|
return obj.hw.Write(data)
|
|
}
|
|
|
|
func (obj *createObject) Close() error {
|
|
if obj.hw == nil {
|
|
panic("createObject: already closed!")
|
|
}
|
|
|
|
obj.file.Close()
|
|
|
|
id := ID(obj.hw.Hash())
|
|
obj.ch <- id
|
|
|
|
// move file to final name using hash of contents
|
|
err := obj.repo.renameFile(obj.file, obj.tpe, id)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
obj.hw = nil
|
|
obj.file = nil
|
|
return nil
|
|
}
|