71 lines
1.2 KiB
Go
71 lines
1.2 KiB
Go
package bundle
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import (
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"encoding/json"
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"os"
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"path/filepath"
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"github.com/opencontainers/runtime-spec/specs-go"
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"github.com/pkg/errors"
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)
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const configName = "config.json"
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func New(path string, s *specs.Spec) (*Bundle, error) {
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if err := os.Mkdir(path, 0700); err != nil {
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return nil, err
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}
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b := &Bundle{
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Path: path,
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}
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if err := os.Mkdir(filepath.Join(path, "rootfs"), 0700); err != nil {
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b.Delete()
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return nil, err
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}
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f, err := os.Create(filepath.Join(path, configName))
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if err != nil {
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b.Delete()
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return nil, err
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}
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err = json.NewEncoder(f).Encode(s)
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f.Close()
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if err != nil {
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b.Delete()
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return nil, err
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}
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return b, nil
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}
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func Load(path string) (*Bundle, error) {
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fi, err := os.Stat(path)
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if err != nil {
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return nil, errors.Wrapf(err, "failed to access %q", path)
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}
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if !fi.IsDir() {
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return nil, errors.Errorf("%q is not a directory", path)
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}
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return &Bundle{
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Path: path,
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}, nil
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}
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type Bundle struct {
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Path string
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}
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func (b *Bundle) Config() (*specs.Spec, error) {
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var s specs.Spec
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f, err := os.Open(filepath.Join(b.Path, configName))
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if err != nil {
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return nil, err
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}
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err = json.NewDecoder(f).Decode(&s)
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f.Close()
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return &s, err
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}
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func (b *Bundle) Delete() error {
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return os.RemoveAll(b.Path)
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}
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