88 lines
2.1 KiB
Go
88 lines
2.1 KiB
Go
package containerd
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
const (
|
|
defaultAddress = `\\.\pipe\containerd-containerd-test`
|
|
testImage = "docker.io/library/go:nanoserver"
|
|
)
|
|
|
|
var (
|
|
dockerLayerFolders []string
|
|
|
|
defaultRoot = filepath.Join(os.Getenv("programfiles"), "containerd", "root-test")
|
|
)
|
|
|
|
func platformTestSetup(client *Client) error {
|
|
var (
|
|
roots []string
|
|
layerChains = make(map[string]string)
|
|
)
|
|
// Since we can't pull images yet, we'll piggyback on the default
|
|
// docker's images
|
|
wfPath := `C:\ProgramData\docker\windowsfilter`
|
|
wf, err := os.Open(wfPath)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "failed to access docker layers @ %s", wfPath)
|
|
}
|
|
defer wf.Close()
|
|
entries, err := wf.Readdirnames(0)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "failed to read %s entries", wfPath)
|
|
}
|
|
|
|
for _, fn := range entries {
|
|
layerChainPath := filepath.Join(wfPath, fn, "layerchain.json")
|
|
lfi, err := os.Stat(layerChainPath)
|
|
switch {
|
|
case err == nil && lfi.Mode().IsRegular():
|
|
f, err := os.OpenFile(layerChainPath, os.O_RDONLY, 0660)
|
|
if err != nil {
|
|
fmt.Fprintln(os.Stderr,
|
|
errors.Wrapf(err, "failed to open %s", layerChainPath))
|
|
continue
|
|
}
|
|
defer f.Close()
|
|
l := make([]string, 0)
|
|
if err := json.NewDecoder(f).Decode(&l); err != nil {
|
|
fmt.Fprintln(os.Stderr,
|
|
errors.Wrapf(err, "failed to decode %s", layerChainPath))
|
|
continue
|
|
}
|
|
switch {
|
|
case len(l) == 1:
|
|
layerChains[l[0]] = filepath.Join(wfPath, fn)
|
|
case len(l) > 1:
|
|
fmt.Fprintf(os.Stderr, "Too many entries in %s: %d", layerChainPath, len(l))
|
|
case len(l) == 0:
|
|
roots = append(roots, filepath.Join(wfPath, fn))
|
|
}
|
|
case os.IsNotExist(err):
|
|
// keep on going
|
|
default:
|
|
return errors.Wrapf(err, "error trying to access %s", layerChainPath)
|
|
}
|
|
}
|
|
|
|
// They'll be 2 roots, just take the first one
|
|
l := roots[0]
|
|
dockerLayerFolders = append(dockerLayerFolders, l)
|
|
for {
|
|
l = layerChains[l]
|
|
if l == "" {
|
|
break
|
|
}
|
|
|
|
dockerLayerFolders = append([]string{l}, dockerLayerFolders...)
|
|
}
|
|
|
|
return nil
|
|
}
|