"k8s.io/apiserver/pkg/admission"
	"k8s.io/component-base/metrics/legacyregistry"
)

var (
	kind     = schema.GroupVersionKind{Group: "kgroup", Version: "kversion", Kind: "kind"}
	resource = schema.GroupVersionResource{Group: "rgroup", Version: "rversion", Resource: "resource"}
	attr     = admission.NewAttributesRecord(nil, nil, kind, "ns", "name", resource, "subresource", admission.Create, &metav1.CreateOptions{}, false, nil)
)

Lucas Käldström <******@****.***> 1485540217 +0200

cpanato <******@****.***> 1717690383 +0200

zirain <******@****.***> 1713809620 +0800

func asGoVersion(v string) goVersion {
	return goVersion(version.Lang(v))
}

// isValid reports whether v is a valid Go version.
func (v goVersion) isValid() bool {
	return v != ""
}

// cmp returns -1, 0, or +1 depending on whether x < y, x == y, or x > y,
// interpreted as Go versions.
func (x goVersion) cmp(y goVersion) int {
	return version.Compare(string(x), string(y))
}

var (

// This function assumes that the highest supported version must be v1.x.
func HighestSupportedVersion(versions []string) (*Version, error) {
	if len(versions) == 0 {
		return nil, errors.New("empty array for supported versions")
	}

	var (
		highestSupportedVersion *Version
		theErr                  error
	)

	for i := len(versions) - 1; i >= 0; i-- {

// Internal helper: returns normalized build version (with "v" prefix if needed)
// If input doesn't match known version pattern, returns empty string.
func normalizedBuildVersion(version string) string {
	if kubeReleaseRegex.MatchString(version) {
		if strings.HasPrefix(version, "v") {
			return version
		}
		return "v" + version
	}
	return ""
}

// Internal helper: split version parts,

	buildArch        = "unknown"
)

// BuildInfo describes version information about the binary build.
type BuildInfo struct {
	Version       string `json:"version"`
	GitRevision   string `json:"revision"`
	GolangVersion string `json:"golang_version"`
	BuildStatus   string `json:"status"`
	GitTag        string `json:"tag"`
}

// ServerInfo contains the version for a single control plane component
type ServerInfo struct {

// If v does not start with "go", stripGo returns the empty string (a known invalid version).
func stripGo(v string) string {
	v, _, _ = strings.Cut(v, "-") // strip -bigcorp suffix.
	if len(v) < 2 || v[:2] != "go" {
		return ""
	}
	return v[2:]
}

// Lang returns the Go language version for version x.
// If x is not a valid version, Lang returns the empty string.
// For example:
//

go version
stdout '^go version'

# Flags without files, or paths to missing files, should error.
! go version missing.exe
! go version -m
stderr 'with arguments'
! go version -v
stderr 'with arguments'

# Check that 'go version' succeed even when it does not contain Go build info.
# It should print an error if the file has a known Go binary extension.
#
go version empty.txt
! stdout .