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// Copyright 2019 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
package provenance
import (
"fmt"
"runtime"
"runtime/debug"
"strings"
"github.com/blang/semver/v4"
)
// These variables are set at build time using ldflags.
//
//nolint:gochecknoglobals
var (
// During a release, this will be set to the release tag, e.g. "kustomize/v4.5.7"
version = developmentVersion
// build date in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ')
buildDate = unknown
)
const (
// This default value, (devel), matches
// the value debug.BuildInfo uses for an unset main module version.
developmentVersion = "(devel)"
// ModulePath is kustomize module path, defined in kustomize/go.mod
ModulePath = "sigs.k8s.io/kustomize/kustomize/v5"
// This is default value, unknown, substituted when
// the value can't be determined from debug.BuildInfo.
unknown = "unknown"
)
// Provenance holds information about the build of an executable.
type Provenance struct {
// Version of the kustomize binary.
Version string `json:"version,omitempty" yaml:"version,omitempty"`
// GitCommit is a git commit
GitCommit string `json:"gitCommit,omitempty" yaml:"gitCommit,omitempty"`
// BuildDate is date of the build.
BuildDate string `json:"buildDate,omitempty" yaml:"buildDate,omitempty"`
// GoOs holds OS name.
GoOs string `json:"goOs,omitempty" yaml:"goOs,omitempty"`
// GoArch holds architecture name.
GoArch string `json:"goArch,omitempty" yaml:"goArch,omitempty"`
// GoVersion holds Go version.
GoVersion string `json:"goVersion,omitempty" yaml:"goVersion,omitempty"`
}
// GetProvenance returns an instance of Provenance.
func GetProvenance() Provenance {
p := Provenance{
BuildDate: buildDate,
Version: version,
GitCommit: unknown,
GoOs: runtime.GOOS,
GoArch: runtime.GOARCH,
GoVersion: runtime.Version(),
}
info, ok := debug.ReadBuildInfo()
if !ok {
return p
}
for _, setting := range info.Settings {
// For now, the git commit is the only information of interest.
// We could consider adding other info such as the commit date in the future.
if setting.Key == "vcs.revision" {
p.GitCommit = setting.Value
break
}
}
p.Version = FindVersion(info, p.Version)
return p
}
// FindVersion searches for a version in the depth of dependencies including replacements,
// otherwise, it tries to get version from debug.BuildInfo Main.
func FindVersion(info *debug.BuildInfo, version string) string {
for _, dep := range info.Deps {
if dep != nil && dep.Path == ModulePath {
if dep.Version == developmentVersion {
continue
}
v, err := GetMostRecentTag(*dep)
if err != nil {
fmt.Printf("failed to get most recent tag for %s: %v\n", dep.Path, err)
continue
}
return v
}
}
if version == developmentVersion && info.Main.Version != "" {
return info.Main.Version
}
return version
}
func GetMostRecentTag(m debug.Module) (string, error) {
for m.Replace != nil {
m = *m.Replace
}
split := strings.Split(m.Version, "-")
sv, err := semver.Parse(strings.TrimPrefix(split[0], "v"))
if err != nil {
return "", fmt.Errorf("failed to parse version %s: %w", m.Version, err)
}
if len(split) > 1 && sv.Patch > 0 {
sv.Patch -= 1
}
return fmt.Sprintf("v%s", sv.FinalizeVersion()), nil
}
// Short returns the shortened provenance stamp.
func (v Provenance) Short() string {
return fmt.Sprintf(
"%v",
Provenance{
Version: v.Version,
BuildDate: v.BuildDate,
})
}
// Semver returns the semantic version of kustomize.
// kustomize version is set in format "kustomize/vX.X.X" in every release.
// X.X.X is a semver. If the version string is not in this format,
// return the original version string
func (v Provenance) Semver() string {
return strings.TrimPrefix(v.Version, "kustomize/")
}
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