// newStorage returns a new storage in path root with the given maxFileSize,
// or defaultMaxFileSize (512MB) if <= 0
func newStorage(root string, maxFileSize int64) (*storage, error) {
fi, err := os.Stat(root)
if os.IsNotExist(err) {
return nil, fmt.Errorf("storage root %q doesn't exist", root)
}
if err != nil {
return nil, fmt.Errorf("Failed to stat directory %q: %v", root, err)
}
if !fi.IsDir() {
return nil, fmt.Errorf("storage root %q exists but is not a directory.", root)
}
index, _, err := kvfile.NewStorage(filepath.Join(root, "index.kv"))
if maxFileSize <= 0 {
maxFileSize = defaultMaxFileSize
}
s := &storage{root: root, index: index, maxFileSize: maxFileSize,
Generationer: local.NewGenerationer(root),
}
if err := s.openCurrent(); err != nil {
return nil, err
}
if _, _, err := s.StorageGeneration(); err != nil {
return nil, fmt.Errorf("Error initialization generation for %q: %v", root, err)
}
return s, nil
}
func (tester) test(t *testing.T, tfn func(*testing.T, func() *index.Index)) {
var cleanup []func()
defer func() {
for _, fn := range cleanup {
fn()
}
}()
initIndex := func() *index.Index {
td, err := ioutil.TempDir("", "kvfile-test")
if err != nil {
t.Fatal(err)
}
is, closer, err := kvfile.NewStorage(filepath.Join(td, "kvfile"))
if err != nil {
os.RemoveAll(td)
t.Fatal(err)
}
cleanup = append(cleanup, func() {
closer.Close()
os.RemoveAll(td)
})
return index.New(is)
}
tfn(t, initIndex)
}
func New(root string) (*storage, error) {
fi, err := os.Stat(root)
if os.IsNotExist(err) {
return nil, fmt.Errorf("storage root %q doesn't exist", root)
}
if err != nil {
return nil, fmt.Errorf("Failed to stat directory %q: %v", root, err)
}
if !fi.IsDir() {
return nil, fmt.Errorf("storage root %q exists but is not a directory.", root)
}
index, _, err := kvfile.NewStorage(filepath.Join(root, "index.kv"))
s := &storage{root: root, index: index, maxFileSize: defaultMaxFileSize}
if err := s.openCurrent(); err != nil {
return nil, err
}
return s, nil
}