Function GenerateUserString

internal/cri/util/util.go:129–150

GenerateUserString generates valid user string based on OCI Image Spec v1.0.0. CRI defines that the following combinations are valid: (none) -> "" username -> username username, uid -> username username, uid, gid -> username:gid username, gid -> username:gid uid -> uid uid, gid -> uid:gid gid -> e

(username string, uid, gid *runtime.Int64Value)

//
// TODO(random-liu): Add group name support in CRI.
func GenerateUserString(username string, uid, gid *runtime.Int64Value) (string, error) {
	var userstr, groupstr string
	if uid != nil {
		userstr = strconv.FormatInt(uid.GetValue(), 10)
	}
	if username != "" {
		userstr = username
	}
	if gid != nil {
		groupstr = strconv.FormatInt(gid.GetValue(), 10)
	}
	if userstr == "" {
		if groupstr != "" {
			return "", fmt.Errorf("user group %q is specified without user", groupstr)
		}
		return "", nil
	}
	if groupstr != "" {
		userstr = userstr + ":" + groupstr
	}
	return userstr, nil
}

// IsShimTTRPCClosed returns true if the cause of error is ttrpc.ErrClosed from shim.
func IsShimTTRPCClosed(err error) bool {