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version/mkversion: add documentation, rename internal terminology

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Signed-off-by: David Anderson <danderson@tailscale.com>
This commit is contained in:
David Anderson 2023-02-17 20:37:42 -08:00 committed by Dave Anderson
parent 1dadbbb72a
commit 8ed27d65ef
2 changed files with 129 additions and 98 deletions
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179
version/mkversion/mkversion.go
View File

@ -23,27 +23,61 @@
"github.com/google/uuid"
)
// VersionInfo is version information extracted from a git checkout.
type VersionInfo struct {
// Short is the short version string. See the documentation of version.Short
// for possible values.
Short string
// Long is the long version string. See the documentation for version.Long
// for possible values.
Long string
OSSHash string
CorpHash string
Xcode string // For embedding into Xcode metadata (iOS and macsys)
XcodeMacOS string // For embedding into Xcode metadata (macOS)
Winres string // For embedding into Windows metadata
OSSDate string // Unix timestamp of commit date (git: %ct)
CorpDate string // Unix timestamp of commit date (git: %ct)
// GitHash is the git hash of the tailscale.com Go module.
GitHash string
// OtherHash is the git hash of a supplemental git repository, if any. For
// example, the commit of the tailscale-android repository.
OtherHash string
// Xcode is the version string that gets embedded into Xcode builds for the
// Tailscale iOS app and macOS standalone (aka "macsys") app.
//
// It is the same as Short, but with 100 added to the major version number.
// This is because Apple requires monotonically increasing version numbers,
// and very early builds of Tailscale used a single incrementing integer,
// which the Apple interprets as the major version number. When we switched
// to the current scheme, we started the major version number at 100 (v0,
// plus 100) to make the transition.
Xcode string
// XcodeMacOS is the version string that gets embedded into Xcode builds for
// the Tailscale macOS app store app.
//
// This used to be the same as Xcode, but at some point Xcode reverted to
// auto-incrementing build numbers instead of using the version we embedded.
// As a result, we had to alter the version scheme again, and switched to
// GitHash's commit date, in the format "YYYY.DDD.HHMMSS"
XcodeMacOS string
// Winres is the version string that gets embedded into Windows exe
// metadata. It is of the form "x,y,z,0".
Winres string
// GitDate is the unix timestamp of GitHash's commit date.
GitDate string
// OtherDate is the unix timestamp of OtherHash's commit date, if any.
OtherDate string
// Track is the release track of this build: "stable" if the minor version
// number is even, "unstable" if it's odd.
Track string
// MSIProductCodes is a map of Windows CPU architecture names to UUIDv5
// hashes that uniquely identify the version of the build. These are used in
// the MSI installer logic to uniquely identify particular builds.
MSIProductCodes map[string]string
}
// String returns v's information as shell variable assignments.
func (v VersionInfo) String() string {
f := fmt.Fprintf
var b bytes.Buffer
f(&b, "VERSION_SHORT=%q\n", v.Short)
f(&b, "VERSION_LONG=%q\n", v.Long)
f(&b, "VERSION_GIT_HASH=%q\n", v.OSSHash)
f(&b, "VERSION_EXTRA_HASH=%q\n", v.CorpHash)
f(&b, "VERSION_GIT_HASH=%q\n", v.GitHash)
f(&b, "VERSION_EXTRA_HASH=%q\n", v.OtherHash)
f(&b, "VERSION_XCODE=%q\n", v.Xcode)
f(&b, "VERSION_XCODE_MACOS=%q\n", v.XcodeMacOS)
f(&b, "VERSION_WINRES=%q\n", v.Winres)
@ -71,32 +105,34 @@ func Info() VersionInfo {
func InfoFrom(dir string) (VersionInfo, error) {
runner := dirRunner(dir)
var v verInfo
var err error
v.corpHash, err = runner.output("git", "rev-parse", "HEAD")
otherHash, err := runner.output("git", "rev-parse", "HEAD")
if err != nil {
return VersionInfo{}, err
}
v.corpDate, err = runner.output("git", "log", "-n1", "--format=%ct", "HEAD")
otherDate, err := runner.output("git", "log", "-n1", "--format=%ct", "HEAD")
if err != nil {
return VersionInfo{}, err
}
if !runner.ok("git", "diff-index", "--quiet", "HEAD") {
v.corpHash = v.corpHash + "-dirty"
otherHash = otherHash + "-dirty"
}
ossHash, ossDir, err := parseGoMod(runner)
var v verInfo
hash, dir, err := parseGoMod(runner)
if err != nil {
return VersionInfo{}, err
}
if ossHash != "" {
v.ossInfo, err = infoFromCache(ossHash, runner)
if hash != "" {
v, err = infoFromCache(hash, runner)
} else {
v.ossInfo, err = infoFromDir(ossDir)
v, err = infoFromDir(dir)
}
if err != nil {
return VersionInfo{}, err
}
v.otherHash = otherHash
v.otherDate = otherDate
return mkOutput(v)
@ -124,8 +160,8 @@ func mkOutput(v verInfo) (VersionInfo, error) {
}
var hashes string
if v.corpHash != "" {
hashes = "-g" + shortHash(v.corpHash)
if v.otherHash != "" {
hashes = "-g" + shortHash(v.otherHash)
}
if v.hash != "" {
hashes = "-t" + shortHash(v.hash) + hashes
@ -143,26 +179,26 @@ func mkOutput(v verInfo) (VersionInfo, error) {
// based it on the actual version number we'd run into issues when doing
// cherrypick stable builds from a release branch after unstable builds from
// HEAD).
corpSec, err := strconv.ParseInt(v.corpDate, 10, 64)
otherSec, err := strconv.ParseInt(v.otherDate, 10, 64)
if err != nil {
return VersionInfo{}, fmt.Errorf("Culd not parse corpDate %q: %w", v.corpDate, err)
return VersionInfo{}, fmt.Errorf("Culd not parse otherDate %q: %w", v.otherDate, err)
}
corpTime := time.Unix(corpSec, 0).UTC()
otherTime := time.Unix(otherSec, 0).UTC()
// We started to need to do this in 2023, and the last Apple-generated
// incrementing build number was 273. To avoid using up the space, we
// use <year - 1750> as the major version (thus 273.*, 274.* in 2024, etc.),
// so that we we're still in the same range. This way if Apple goes back to
// auto-incrementing the number for us, we can go back to it with
// reasonable-looking numbers.
xcodeMacOS := fmt.Sprintf("%d.%d.%d", corpTime.Year()-1750, corpTime.YearDay(), corpTime.Hour()*60*60+corpTime.Minute()*60+corpTime.Second())
xcodeMacOS := fmt.Sprintf("%d.%d.%d", otherTime.Year()-1750, otherTime.YearDay(), otherTime.Hour()*60*60+otherTime.Minute()*60+otherTime.Second())
return VersionInfo{
Short: fmt.Sprintf("%d.%d.%d", v.major, v.minor, v.patch),
Long: fmt.Sprintf("%d.%d.%d%s%s", v.major, v.minor, v.patch, changeSuffix, hashes),
OSSHash: fmt.Sprintf("%s", v.hash),
OSSDate: fmt.Sprintf("%s", v.ossInfo.date),
CorpHash: fmt.Sprintf("%s", v.corpHash),
CorpDate: fmt.Sprintf("%s", v.corpDate),
GitHash: fmt.Sprintf("%s", v.hash),
GitDate: fmt.Sprintf("%s", v.date),
OtherHash: fmt.Sprintf("%s", v.otherHash),
OtherDate: fmt.Sprintf("%s", v.otherDate),
Xcode: fmt.Sprintf("%d.%d.%d", v.major+100, v.minor, v.patch),
XcodeMacOS: xcodeMacOS,
Winres: fmt.Sprintf("%d,%d,%d,0", v.major, v.minor, v.patch),
@ -192,12 +228,12 @@ func makeMSIProductCodes(v verInfo, track string) map[string]string {
func gitRootDir() (string, error) {
top, err := exec.Command("git", "rev-parse", "--show-toplevel").Output()
if err != nil {
return "", fmt.Errorf("failed to find git top level (not in corp git?): %w", err)
return "", fmt.Errorf("failed to find git top level: %w", err)
}
return strings.TrimSpace(string(top)), nil
}
func parseGoMod(runner dirRunner) (ossShortHash, localCheckout string, err error) {
func parseGoMod(runner dirRunner) (shortHash, localCheckout string, err error) {
goBin := filepath.Join(runtime.GOROOT(), "bin", "go"+exe())
if !strings.HasPrefix(goBin, "/") {
// GOROOT got -trimpath'd, fall back to hoping $PATH has a
@ -230,7 +266,7 @@ func parseGoMod(runner dirRunner) (ossShortHash, localCheckout string, err error
if r.Path != "tailscale.com" {
continue
}
shortHash := r.Version[strings.LastIndex(r.Version, "-")+1:]
shortHash = r.Version[strings.LastIndex(r.Version, "-")+1:]
return shortHash, "", nil
}
return "", "", fmt.Errorf("failed to find tailscale.com module in go.mod")
@ -244,25 +280,22 @@ func exe() string {
}
type verInfo struct {
ossInfo
corpHash string
corpDate string
}
// unknownPatchVersion is the patch version used when the oss package
// doesn't contain enough version information to derive the correct
// version. Such builds only get used when generating bug reports in
// an ephemeral working environment, so will never be distributed. As
// such, we use a highly visible sentinel patch number.
const unknownPatchVersion = 9999999
type ossInfo struct {
major, minor, patch int
changeCount int
hash string
date string
otherHash string
otherDate string
}
// unknownPatchVersion is the patch version used when the tailscale.com package
// doesn't contain enough version information to derive the correct version.
// Such builds only get used when generating bug reports in an ephemeral working
// environment, so will never be distributed. As such, we use a highly visible
// sentinel patch number.
const unknownPatchVersion = 9999999
func isBareRepo(r dirRunner) (bool, error) {
s, err := r.output("git", "rev-parse", "--is-bare-repository")
if err != nil {
@ -272,71 +305,71 @@ func isBareRepo(r dirRunner) (bool, error) {
return o == "true", nil
}
func infoFromCache(shortHash string, runner dirRunner) (ossInfo, error) {
func infoFromCache(shortHash string, runner dirRunner) (verInfo, error) {
cacheDir, err := os.UserCacheDir()
if err != nil {
return ossInfo{}, fmt.Errorf("Getting user cache dir: %w", err)
return verInfo{}, fmt.Errorf("Getting user cache dir: %w", err)
}
ossCache := filepath.Join(cacheDir, "tailscale-oss")
r := dirRunner(ossCache)
tailscaleCache := filepath.Join(cacheDir, "tailscale-oss")
r := dirRunner(tailscaleCache)
cloneRequired := false
if _, err := os.Stat(ossCache); err != nil {
if _, err := os.Stat(tailscaleCache); err != nil {
cloneRequired = true
} else {
isBare, err := isBareRepo(r)
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
if isBare {
cloneRequired = true
if err := os.RemoveAll(ossCache); err != nil {
return ossInfo{}, fmt.Errorf("removing old cache dir failed: %w", err)
if err := os.RemoveAll(tailscaleCache); err != nil {
return verInfo{}, fmt.Errorf("removing old cache dir failed: %w", err)
}
}
}
if cloneRequired {
if !runner.ok("git", "clone", "https://github.com/tailscale/tailscale", ossCache) {
return ossInfo{}, fmt.Errorf("cloning OSS repo failed")
if !runner.ok("git", "clone", "https://github.com/tailscale/tailscale", tailscaleCache) {
return verInfo{}, fmt.Errorf("cloning OSS repo failed")
}
}
if !r.ok("git", "cat-file", "-e", shortHash) {
if !r.ok("git", "fetch", "origin") {
return ossInfo{}, fmt.Errorf("updating OSS repo failed")
return verInfo{}, fmt.Errorf("updating OSS repo failed")
}
}
hash, err := r.output("git", "rev-parse", shortHash)
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
date, err := r.output("git", "log", "-n1", "--format=%ct", shortHash)
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
baseHash, err := r.output("git", "rev-list", "--max-count=1", hash, "--", "VERSION.txt")
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
s, err := r.output("git", "show", baseHash+":VERSION.txt")
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
major, minor, patch, err := parseVersion(s)
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
s, err = r.output("git", "rev-list", "--count", hash, "^"+baseHash)
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
changeCount, err := strconv.Atoi(s)
if err != nil {
return ossInfo{}, fmt.Errorf("infoFromCache: parsing changeCount %q: %w", changeCount, err)
return verInfo{}, fmt.Errorf("infoFromCache: parsing changeCount %q: %w", changeCount, err)
}
return ossInfo{
return verInfo{
major: major,
minor: minor,
patch: patch,
@ -346,17 +379,17 @@ func infoFromCache(shortHash string, runner dirRunner) (ossInfo, error) {
}, nil
}
func infoFromDir(dir string) (ossInfo, error) {
func infoFromDir(dir string) (verInfo, error) {
r := dirRunner(dir)
gitDir := filepath.Join(dir, ".git")
if _, err := os.Stat(gitDir); err != nil {
// Raw directory fetch, get as much info as we can and make up the rest.
s, err := readFile(filepath.Join(dir, "VERSION.txt"))
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
major, minor, patch, err := parseVersion(s)
return ossInfo{
return verInfo{
major: major,
minor: minor,
patch: patch,
@ -366,34 +399,34 @@ func infoFromDir(dir string) (ossInfo, error) {
hash, err := r.output("git", "rev-parse", "HEAD")
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
date, err := r.output("git", "log", "-n1", "--format=%%ct", "HEAD")
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
baseHash, err := r.output("git", "rev-list", "--max-count=1", hash, "--", "VERSION.txt")
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
s, err := r.output("git", "show", baseHash+":VERSION.txt")
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
major, minor, patch, err := parseVersion(s)
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
s, err = r.output("git", "rev-list", "--count", hash, "^"+baseHash)
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
changeCount, err := strconv.Atoi(s)
if err != nil {
return ossInfo{}, err
return verInfo{}, err
}
return ossInfo{
return verInfo{
major: major,
minor: minor,
patch: patch,

32
version/mkversion/mkversion_test.go
View File

@ -12,28 +12,26 @@
"github.com/google/go-cmp/cmp"
)
func mkInfo(gitHash, otherHash, corpDate string, major, minor, patch, changeCount int) verInfo {
func mkInfo(gitHash, otherHash, otherDate string, major, minor, patch, changeCount int) verInfo {
return verInfo{
ossInfo: ossInfo{
major: major,
minor: minor,
patch: patch,
changeCount: changeCount,
hash: gitHash,
},
corpHash: otherHash,
corpDate: corpDate,
otherHash: otherHash,
otherDate: otherDate,
}
}
func TestMkversion(t *testing.T) {
corpDate := fmt.Sprintf("%d", time.Date(2023, time.January, 27, 1, 2, 3, 4, time.UTC).Unix())
otherDate := fmt.Sprintf("%d", time.Date(2023, time.January, 27, 1, 2, 3, 4, time.UTC).Unix())
tests := []struct {
in verInfo
want string
}{
{mkInfo("abcdef", "", corpDate, 0, 98, 0, 0), `
{mkInfo("abcdef", "", otherDate, 0, 98, 0, 0), `
VERSION_SHORT="0.98.0"
VERSION_LONG="0.98.0-tabcdef"
VERSION_GIT_HASH="abcdef"
@ -45,7 +43,7 @@ func TestMkversion(t *testing.T) {
VERSION_MSIPRODUCT_AMD64="C653B075-AD91-5265-9DF8-0087D35D148D"
VERSION_MSIPRODUCT_ARM64="1C41380B-A742-5A3C-AF5D-DF7894DD0FB8"
VERSION_MSIPRODUCT_X86="4ABDDA14-7499-5C2E-A62A-DD435C50C4CB"`},
{mkInfo("abcdef", "", corpDate, 0, 98, 1, 0), `
{mkInfo("abcdef", "", otherDate, 0, 98, 1, 0), `
VERSION_SHORT="0.98.1"
VERSION_LONG="0.98.1-tabcdef"
VERSION_GIT_HASH="abcdef"
@ -57,7 +55,7 @@ func TestMkversion(t *testing.T) {
VERSION_MSIPRODUCT_AMD64="DFD6DCF2-06D8-5D19-BDA0-FAF31E44EC23"
VERSION_MSIPRODUCT_ARM64="A4CCF19C-372B-5007-AFD8-1AF661DFF670"
VERSION_MSIPRODUCT_X86="FF12E937-DDC4-5868-9B63-D35B2050D4EA"`},
{mkInfo("abcdef", "", corpDate, 1, 2, 9, 0), `
{mkInfo("abcdef", "", otherDate, 1, 2, 9, 0), `
VERSION_SHORT="1.2.9"
VERSION_LONG="1.2.9-tabcdef"
VERSION_GIT_HASH="abcdef"
@ -69,7 +67,7 @@ func TestMkversion(t *testing.T) {
VERSION_MSIPRODUCT_AMD64="D47B5157-FF26-5A10-A94E-50E4529303A9"
VERSION_MSIPRODUCT_ARM64="91D16F75-2A12-5E12-820A-67B89BF858E7"
VERSION_MSIPRODUCT_X86="8F1AC1C6-B93B-5C70-802E-6AE9591FA0D6"`},
{mkInfo("abcdef", "", corpDate, 1, 15, 0, 129), `
{mkInfo("abcdef", "", otherDate, 1, 15, 0, 129), `
VERSION_SHORT="1.15.129"
VERSION_LONG="1.15.129-tabcdef"
VERSION_GIT_HASH="abcdef"
@ -81,7 +79,7 @@ func TestMkversion(t *testing.T) {
VERSION_MSIPRODUCT_AMD64="89C96952-1FB8-5A4D-B02E-16A8060C56AA"
VERSION_MSIPRODUCT_ARM64="DB1A2E86-66C4-5CEC-8F4C-7DB805370F3A"
VERSION_MSIPRODUCT_X86="DC57C0C3-5164-5C92-86B3-2800CEFF0540"`},
{mkInfo("abcdef", "", corpDate, 1, 2, 0, 17), `
{mkInfo("abcdef", "", otherDate, 1, 2, 0, 17), `
VERSION_SHORT="1.2.0"
VERSION_LONG="1.2.0-17-tabcdef"
VERSION_GIT_HASH="abcdef"
@ -93,7 +91,7 @@ func TestMkversion(t *testing.T) {
VERSION_MSIPRODUCT_AMD64="0F9709AE-0E5E-51AF-BCCD-A25314B4CE8B"
VERSION_MSIPRODUCT_ARM64="39D5D46E-E644-5C80-9EF8-224AC1AD5969"
VERSION_MSIPRODUCT_X86="4487136B-2D11-5E42-BD80-B8529F3326F4"`},
{mkInfo("abcdef", "defghi", corpDate, 1, 15, 0, 129), `
{mkInfo("abcdef", "defghi", otherDate, 1, 15, 0, 129), `
VERSION_SHORT="1.15.129"
VERSION_LONG="1.15.129-tabcdef-gdefghi"
VERSION_GIT_HASH="abcdef"
@ -105,7 +103,7 @@ func TestMkversion(t *testing.T) {
VERSION_MSIPRODUCT_AMD64="89C96952-1FB8-5A4D-B02E-16A8060C56AA"
VERSION_MSIPRODUCT_ARM64="DB1A2E86-66C4-5CEC-8F4C-7DB805370F3A"
VERSION_MSIPRODUCT_X86="DC57C0C3-5164-5C92-86B3-2800CEFF0540"`},
{mkInfo("abcdef", "", corpDate, 1, 2, 0, 17), `
{mkInfo("abcdef", "", otherDate, 1, 2, 0, 17), `
VERSION_SHORT="1.2.0"
VERSION_LONG="1.2.0-17-tabcdef"
VERSION_GIT_HASH="abcdef"
@ -117,7 +115,7 @@ func TestMkversion(t *testing.T) {
VERSION_MSIPRODUCT_AMD64="0F9709AE-0E5E-51AF-BCCD-A25314B4CE8B"
VERSION_MSIPRODUCT_ARM64="39D5D46E-E644-5C80-9EF8-224AC1AD5969"
VERSION_MSIPRODUCT_X86="4487136B-2D11-5E42-BD80-B8529F3326F4"`},
{mkInfo("abcdef", "defghi", corpDate, 1, 15, 0, 129), `
{mkInfo("abcdef", "defghi", otherDate, 1, 15, 0, 129), `
VERSION_SHORT="1.15.129"
VERSION_LONG="1.15.129-tabcdef-gdefghi"
VERSION_GIT_HASH="abcdef"
@ -129,9 +127,9 @@ func TestMkversion(t *testing.T) {
VERSION_MSIPRODUCT_AMD64="89C96952-1FB8-5A4D-B02E-16A8060C56AA"
VERSION_MSIPRODUCT_ARM64="DB1A2E86-66C4-5CEC-8F4C-7DB805370F3A"
VERSION_MSIPRODUCT_X86="DC57C0C3-5164-5C92-86B3-2800CEFF0540"`},
{mkInfo("abcdef", "", corpDate, 0, 99, 5, 0), ""}, // unstable, patch number not allowed
{mkInfo("abcdef", "", corpDate, 0, 99, 5, 123), ""}, // unstable, patch number not allowed
{mkInfo("abcdef", "defghi", "", 1, 15, 0, 129), ""}, // missing corpDate
{mkInfo("abcdef", "", otherDate, 0, 99, 5, 0), ""}, // unstable, patch number not allowed
{mkInfo("abcdef", "", otherDate, 0, 99, 5, 123), ""}, // unstable, patch number not allowed
{mkInfo("abcdef", "defghi", "", 1, 15, 0, 129), ""}, // missing otherDate
}
for _, test := range tests {