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Merge pull request #992 from katiewasnothere/test_execinhost_utility
Add a utility function to exec in shimdiag for cri-containerd tests
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| package shimdiag | ||
|
|
||
| import ( | ||
| fmt "fmt" | ||
| "os" | ||
| "path/filepath" | ||
| "sort" | ||
| strings "strings" | ||
|
|
||
| "github.com/Microsoft/go-winio" | ||
| "github.com/containerd/ttrpc" | ||
| "golang.org/x/sys/windows" | ||
| ) | ||
|
|
||
| const ( | ||
| shimPrefix = `\\.\pipe\ProtectedPrefix\Administrators\containerd-shim-` | ||
| shimSuffix = `-pipe` | ||
| ) | ||
|
|
||
| func findPipes(pattern string) ([]string, error) { | ||
| path := `\\.\pipe\*` | ||
| path16, err := windows.UTF16FromString(path) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| var data windows.Win32finddata | ||
| h, err := windows.FindFirstFile(&path16[0], &data) | ||
| if err != nil { | ||
| return nil, &os.PathError{Op: "FindFirstFile", Path: path, Err: err} | ||
| } | ||
| var names []string | ||
| for { | ||
| name := `\\.\pipe\` + windows.UTF16ToString(data.FileName[:]) | ||
| if matched, _ := filepath.Match(pattern, name); matched { | ||
| names = append(names, name) | ||
| } | ||
| err = windows.FindNextFile(h, &data) | ||
| if err == windows.ERROR_NO_MORE_FILES { | ||
| break | ||
| } | ||
| if err != nil { | ||
| return nil, &os.PathError{Op: "FindNextFile", Path: path, Err: err} | ||
| } | ||
| } | ||
| return names, nil | ||
| } | ||
|
|
||
| func FindShims(name string) ([]string, error) { | ||
| pipes, err := findPipes(shimPrefix + name + "*" + shimSuffix) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| for i, p := range pipes { | ||
| pipes[i] = p[len(shimPrefix) : len(p)-len(shimSuffix)] | ||
| } | ||
| sort.Strings(pipes) | ||
| return pipes, nil | ||
| } | ||
|
|
||
| func findShim(name string) (string, error) { | ||
| if strings.ContainsAny(name, "*?\\/") { | ||
| return "", fmt.Errorf("invalid shim name %s", name) | ||
| } | ||
| shims, err := FindShims(name) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| if len(shims) == 0 { | ||
| return "", fmt.Errorf("no such shim %s", name) | ||
| } | ||
| if len(shims) > 1 && shims[0] != name { | ||
| return "", fmt.Errorf("multiple shims beginning with %s", name) | ||
| } | ||
| return shims[0], nil | ||
| } | ||
|
|
||
| func GetShim(name string) (*ttrpc.Client, error) { | ||
| shim, err := findShim(name) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| conn, err := winio.DialPipe(shimPrefix+shim+shimSuffix, nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return ttrpc.NewClient(conn), nil | ||
| } |
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