containerd/execution/statedir.go

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package execution
import (
"io/ioutil"
"os"
"path/filepath"
)
const processesDir = "processes"
type StateDir string
func NewStateDir(root, id string) (StateDir, error) {
path := filepath.Join(root, id)
err := os.Mkdir(path, 0700)
if err != nil {
return "", err
}
err = os.Mkdir(filepath.Join(path, processesDir), 0700)
if err != nil {
os.RemoveAll(path)
return "", err
}
return StateDir(path), err
}
func (s StateDir) Delete() error {
return os.RemoveAll(string(s))
}
func (s StateDir) NewProcess(id string) (string, error) {
// TODO: generate id
newPath := filepath.Join(string(s), "1")
err := os.Mkdir(newPath, 0755)
if err != nil {
return "", err
}
return newPath, nil
}
func (s StateDir) ProcessDir(id string) string {
return filepath.Join(string(s), id)
}
func (s StateDir) DeleteProcess(id string) error {
return os.RemoveAll(filepath.Join(string(s), id))
}
func (s StateDir) Processes() ([]string, error) {
basepath := filepath.Join(string(s), processesDir)
dirs, err := ioutil.ReadDir(basepath)
if err != nil {
return nil, err
}
paths := make([]string, 0)
for _, d := range dirs {
if d.IsDir() {
paths = append(paths, filepath.Join(basepath, d.Name()))
}
}
return paths, nil
}