cd74be68b8
This makes sure that we don't buffer in memory and that we also flush stdin from diff as well as untar. Signed-off-by: Michael Crosby <crosbymichael@gmail.com> Conflicts: pkg/chrootarchive/diff.go
101 lines
2.3 KiB
Go
101 lines
2.3 KiB
Go
package chrootarchive
|
|
|
|
import (
|
|
"io"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/docker/docker/pkg/archive"
|
|
"github.com/docker/docker/pkg/reexec"
|
|
)
|
|
|
|
func init() {
|
|
reexec.Init()
|
|
}
|
|
|
|
func TestChrootTarUntar(t *testing.T) {
|
|
tmpdir, err := ioutil.TempDir("", "docker-TestChrootTarUntar")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(tmpdir)
|
|
src := filepath.Join(tmpdir, "src")
|
|
if err := os.MkdirAll(src, 0700); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := ioutil.WriteFile(filepath.Join(src, "toto"), []byte("hello toto"), 0644); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := ioutil.WriteFile(filepath.Join(src, "lolo"), []byte("hello lolo"), 0644); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
stream, err := archive.Tar(src, archive.Uncompressed)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
dest := filepath.Join(tmpdir, "src")
|
|
if err := os.MkdirAll(dest, 0700); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := Untar(stream, dest, &archive.TarOptions{Excludes: []string{"lolo"}}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
type slowEmptyTarReader struct {
|
|
size int
|
|
offset int
|
|
chunkSize int
|
|
}
|
|
|
|
// Read is a slow reader of an empty tar (like the output of "tar c --files-from /dev/null")
|
|
func (s *slowEmptyTarReader) Read(p []byte) (int, error) {
|
|
time.Sleep(100 * time.Millisecond)
|
|
count := s.chunkSize
|
|
if len(p) < s.chunkSize {
|
|
count = len(p)
|
|
}
|
|
for i := 0; i < count; i++ {
|
|
p[i] = 0
|
|
}
|
|
s.offset += count
|
|
if s.offset > s.size {
|
|
return count, io.EOF
|
|
}
|
|
return count, nil
|
|
}
|
|
|
|
func TestChrootUntarEmptyArchiveFromSlowReader(t *testing.T) {
|
|
tmpdir, err := ioutil.TempDir("", "docker-TestChrootUntarEmptyArchiveFromSlowReader")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(tmpdir)
|
|
dest := filepath.Join(tmpdir, "dest")
|
|
if err := os.MkdirAll(dest, 0700); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
stream := &slowEmptyTarReader{size: 10240, chunkSize: 1024}
|
|
if err := Untar(stream, dest, nil); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func TestChrootApplyEmptyArchiveFromSlowReader(t *testing.T) {
|
|
tmpdir, err := ioutil.TempDir("", "docker-TestChrootApplyEmptyArchiveFromSlowReader")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(tmpdir)
|
|
dest := filepath.Join(tmpdir, "dest")
|
|
if err := os.MkdirAll(dest, 0700); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
stream := &slowEmptyTarReader{size: 10240, chunkSize: 1024}
|
|
if err := ApplyLayer(dest, stream); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|