1 package main
2
3 import (
4 "encoding/json"
5 "flag"
6 "fmt"
7 "os"
8 "path/filepath"
9
10 oci "github.com/opencontainers/image-spec/specs-go/v1"
11 )
12
13 func main() {
14 os.Exit(run())
15 }
16
17 func run() int {
18 flag.Parse()
19
20
21 imageLayout := flag.Arg(0)
22 imageLayoutAbs, err := filepath.Abs(imageLayout)
23 if err != nil {
24 fmt.Println(err)
25 return 1
26 }
27 layoutFS := os.DirFS(imageLayoutAbs)
28 manifestFile := "manifest_list.new.json"
29 file, err := layoutFS.Open(manifestFile)
30 if err != nil {
31 fmt.Println(err)
32 return 1
33 }
34 defer file.Close()
35
36 dec := json.NewDecoder(file)
37 idx := &oci.Index{}
38 if err := dec.Decode(idx); err != nil {
39 fmt.Println(err)
40 return 1
41 }
42
43
44 foundPltfs := map[string]bool{
45 "linux/amd64": false,
46 "linux/arm64": false,
47 }
48 for _, desc := range idx.Manifests {
49 foundPltfs[fmt.Sprintf("%s/%s", desc.Platform.OS, desc.Platform.Architecture)] = true
50 }
51 for platform, found := range foundPltfs {
52 if !found {
53 fmt.Printf("failed to find required platform: %s\n", platform)
54 os.Exit(1)
55 }
56 }
57
58 return 0
59 }
60
View as plain text