Ejemplo n.º 1
0
func unpackIt(a archive.Archive, src string) error {
	reader, writer := io.Pipe()

	cw := make(chan error, 1)
	defer close(cw)

	f, err := os.Open(src)

	if err != nil {
		return err
	}

	go func() {
		defer writer.Close()

		_, err = io.Copy(writer, f)

		if err != nil {
			cw <- err
			return
		}
	}()

	return a.Unpack("/tmp/extracted", reader)
}
Ejemplo n.º 2
0
func packIt(a archive.Archive, srcs []string, dst string) (error, error) {
	reader, writer := io.Pipe()
	defer reader.Close()

	cw := make(chan error, 1)
	defer close(cw)

	go func() {
		defer writer.Close()

		cw <- a.Pack(srcs, writer)
	}()

	bytes, err := ioutil.ReadAll(reader)
	ioutil.WriteFile(dst, bytes, 0644)

	werr := <-cw

	return err, werr
}
Ejemplo n.º 3
0
func restoreCache(src string, s storage.Storage, a archive.Archive) error {
	reader, writer := io.Pipe()

	cw := make(chan error, 1)
	defer close(cw)

	go func() {
		defer writer.Close()

		cw <- s.Get(src, writer)
	}()

	err := a.Unpack("", reader)
	werr := <-cw

	if werr != nil {
		return werr
	}

	return err
}
Ejemplo n.º 4
0
func rebuildCache(srcs []string, dst string, s storage.Storage, a archive.Archive) error {
	log.Infof("Rebuilding cache at %s to %s", srcs, dst)

	reader, writer := io.Pipe()
	defer reader.Close()

	cw := make(chan error, 1)
	defer close(cw)

	go func() {
		defer writer.Close()

		cw <- a.Pack(srcs, writer)
	}()

	err := s.Put(dst, reader)
	werr := <-cw

	if werr != nil {
		return werr
	}

	return err
}