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version/mkversion: allow collecting version only from this repo

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With this change, you can collect version info from either a git
checkout of the tailscale.com Go module (this repo), or a git
checkout of a repo that imports the tailscale.com Go module.

Signed-off-by: David Anderson <danderson@tailscale.com>
This commit is contained in:
David Anderson 2023-02-17 22:03:50 -08:00 committed by Dave Anderson
parent 303048a7d5
commit 45d9784f9d
3 changed files with 140 additions and 224 deletions
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2
go.mod
View File

@ -72,6 +72,7 @@ require (
go4.org/netipx v0.0.0-20220725152314-7e7bdc8411bf
golang.org/x/crypto v0.6.0
golang.org/x/exp v0.0.0-20221205204356-47842c84f3db
golang.org/x/mod v0.7.0
golang.org/x/net v0.7.0
golang.org/x/oauth2 v0.0.0-20220411215720-9780585627b5
golang.org/x/sync v0.1.0
@ -304,7 +305,6 @@ require (
go.uber.org/multierr v1.6.0 // indirect
golang.org/x/exp/typeparams v0.0.0-20221208152030-732eee02a75a // indirect
golang.org/x/image v0.0.0-20201208152932-35266b937fa6 // indirect
golang.org/x/mod v0.7.0 // indirect
golang.org/x/text v0.7.0 // indirect
gomodules.xyz/jsonpatch/v2 v2.2.0 // indirect
google.golang.org/appengine v1.6.7 // indirect

234
version/mkversion/mkversion.go
View File

@ -8,19 +8,17 @@
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"log"
"os"
"os/exec"
"path/filepath"
"runtime"
"strconv"
"strings"
"time"
"github.com/google/uuid"
"golang.org/x/mod/modfile"
)
// VersionInfo is version information extracted from a git checkout.
@ -86,16 +84,17 @@ func (v VersionInfo) String() string {
f(&b, "VERSION_SHORT=%q\n", v.Short)
f(&b, "VERSION_LONG=%q\n", v.Long)
f(&b, "VERSION_GIT_HASH=%q\n", v.GitHash)
f(&b, "VERSION_TRACK=%q\n", v.Track)
if v.OtherHash != "" {
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)
f(&b, "VERSION_TRACK=%q\n", v.Track)
// Ensure a predictable order for these variables for testing purposes.
for _, k := range []string{"amd64", "arm64", "x86"} {
f(&b, "VERSION_MSIPRODUCT_%s=%q\n", strings.ToUpper(k), v.MSIProductCodes[k])
}
}
return b.String()
}
@ -114,37 +113,83 @@ func Info() VersionInfo {
func InfoFrom(dir string) (VersionInfo, error) {
runner := dirRunner(dir)
var err error
otherHash, err := runner.output("git", "rev-parse", "HEAD")
gitRoot, err := runner.output("git", "rev-parse", "--show-toplevel")
if err != nil {
return VersionInfo{}, fmt.Errorf("finding git root: %w", err)
}
runner = dirRunner(gitRoot)
modBs, err := os.ReadFile(filepath.Join(gitRoot, "go.mod"))
if err != nil {
return VersionInfo{}, fmt.Errorf("reading go.mod: %w", err)
}
modPath := modfile.ModulePath(modBs)
if modPath == "" {
return VersionInfo{}, fmt.Errorf("no module path in go.mod")
}
if modPath == "tailscale.com" {
// Invoked in the tailscale.com repo directly, just no further info to
// collect.
v, err := infoFromDir(gitRoot)
if err != nil {
return VersionInfo{}, err
}
return mkOutput(v)
}
// We seem to be in a repo that imports tailscale.com. Find the
// tailscale.com repo and collect additional info from it.
otherHash, err := runner.output("git", "rev-parse", "HEAD")
if err != nil {
return VersionInfo{}, fmt.Errorf("getting git hash: %w", err)
}
otherDate, err := runner.output("git", "log", "-n1", "--format=%ct", "HEAD")
if err != nil {
return VersionInfo{}, err
}
if !runner.ok("git", "diff-index", "--quiet", "HEAD") {
otherHash = otherHash + "-dirty"
return VersionInfo{}, fmt.Errorf("getting git date: %w", err)
}
var v verInfo
hash, dir, err := parseGoMod(runner)
// Note, this mechanism doesn't correctly support go.mod replacements,
// or go workdirs. We only parse out the commit hash from go.mod's
// "require" line, nothing else.
tailscaleHash, err := tailscaleModuleHash(modBs)
if err != nil {
return VersionInfo{}, err
}
if hash != "" {
v, err = infoFromCache(hash, runner)
} else {
v, err = infoFromDir(dir)
}
v, err := infoFromCache(tailscaleHash, runner)
if err != nil {
return VersionInfo{}, err
}
v.otherHash = otherHash
v.otherDate = otherDate
return mkOutput(v)
if !runner.ok("git", "diff-index", "--quiet", "HEAD") {
v.otherHash = v.otherHash + "-dirty"
}
return mkOutput(v)
}
// tailscaleModuleHash returns the git hash of the 'require tailscale.com' line
// in the given go.mod bytes.
func tailscaleModuleHash(modBs []byte) (string, error) {
mod, err := modfile.Parse("go.mod", modBs, nil)
if err != nil {
return "", err
}
for _, req := range mod.Require {
if req.Mod.Path != "tailscale.com" {
continue
}
// Get the last - separated part of req.Mod.Version
// (which is the git hash).
if i := strings.LastIndexByte(req.Mod.Version, '-'); i != -1 {
return req.Mod.Version[i+1:], nil
}
return "", fmt.Errorf("couldn't parse git hash from tailscale.com version %q", req.Mod.Version)
}
return "", fmt.Errorf("no require tailscale.com line in go.mod")
}
func mkOutput(v verInfo) (VersionInfo, error) {
@ -183,6 +228,31 @@ func mkOutput(v verInfo) (VersionInfo, error) {
track = "stable"
}
ret := VersionInfo{
Major: v.major,
Minor: v.minor,
Patch: v.patch,
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),
GitHash: fmt.Sprintf("%s", v.hash),
GitDate: fmt.Sprintf("%s", v.date),
Track: track,
}
if v.otherHash != "" {
ret.OtherHash = fmt.Sprintf("%s", v.otherHash)
// Technically we could populate these fields without the otherHash, but
// these version numbers only make sense when building from Tailscale's
// proprietary repo, so don't clutter open-source-only outputs with
// them.
ret.Xcode = fmt.Sprintf("%d.%d.%d", v.major+100, v.minor, v.patch)
ret.Winres = fmt.Sprintf("%d,%d,%d,0", v.major, v.minor, v.patch)
ret.MSIProductCodes = makeMSIProductCodes(v, track)
}
if v.otherDate != "" {
ret.OtherDate = fmt.Sprintf("%s", v.otherDate)
// Generate a monotonically increasing version number for the macOS app, as
// expected by Apple. We use the date so that it's always increasing (if we
// based it on the actual version number we'd run into issues when doing
@ -190,7 +260,7 @@ func mkOutput(v verInfo) (VersionInfo, error) {
// HEAD).
otherSec, err := strconv.ParseInt(v.otherDate, 10, 64)
if err != nil {
return VersionInfo{}, fmt.Errorf("Culd not parse otherDate %q: %w", v.otherDate, err)
return VersionInfo{}, fmt.Errorf("Could not parse otherDate %q: %w", v.otherDate, err)
}
otherTime := time.Unix(otherSec, 0).UTC()
// We started to need to do this in 2023, and the last Apple-generated
@ -199,24 +269,10 @@ func mkOutput(v verInfo) (VersionInfo, error) {
// 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", otherTime.Year()-1750, otherTime.YearDay(), otherTime.Hour()*60*60+otherTime.Minute()*60+otherTime.Second())
ret.XcodeMacOS = fmt.Sprintf("%d.%d.%d", otherTime.Year()-1750, otherTime.YearDay(), otherTime.Hour()*60*60+otherTime.Minute()*60+otherTime.Second())
}
return VersionInfo{
Major: v.major,
Minor: v.minor,
Patch: v.patch,
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),
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),
Track: track,
MSIProductCodes: makeMSIProductCodes(v, track),
}, nil
return ret, nil
}
// makeMSIProductCodes produces per-architecture v5 UUIDs derived from the pkgs
@ -237,60 +293,6 @@ func makeMSIProductCodes(v verInfo, track string) map[string]string {
return result
}
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: %w", err)
}
return strings.TrimSpace(string(top)), nil
}
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
// working go.
goBin = "go"
}
mod, err := runner.output(goBin, "mod", "edit", "--json")
if err != nil {
return "", "", err
}
var mj modJSON
if err := json.Unmarshal([]byte(mod), &mj); err != nil {
return "", "", fmt.Errorf("parsing go.mod: %w", err)
}
for _, r := range mj.Replace {
if r.Old.Path != "tailscale.com" {
continue
}
if filepath.IsAbs(r.New.Path) {
return "", r.New.Path, nil
}
gitRoot, err := gitRootDir()
if err != nil {
return "", "", err
}
return "", filepath.Join(gitRoot, r.New.Path), nil
}
for _, r := range mj.Require {
if r.Path != "tailscale.com" {
continue
}
shortHash = r.Version[strings.LastIndex(r.Version, "-")+1:]
return shortHash, "", nil
}
return "", "", fmt.Errorf("failed to find tailscale.com module in go.mod")
}
func exe() string {
if runtime.GOOS == "windows" {
return ".exe"
}
return ""
}
type verInfo struct {
major, minor, patch int
changeCount int
@ -308,15 +310,6 @@ type verInfo struct {
// 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 {
return false, err
}
o := strings.TrimSpace(s)
return o == "true", nil
}
func infoFromCache(shortHash string, runner dirRunner) (verInfo, error) {
cacheDir, err := os.UserCacheDir()
if err != nil {
@ -325,25 +318,9 @@ func infoFromCache(shortHash string, runner dirRunner) (verInfo, error) {
tailscaleCache := filepath.Join(cacheDir, "tailscale-oss")
r := dirRunner(tailscaleCache)
cloneRequired := false
if _, err := os.Stat(tailscaleCache); err != nil {
cloneRequired = true
} else {
isBare, err := isBareRepo(r)
if err != nil {
return verInfo{}, err
}
if isBare {
cloneRequired = true
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", tailscaleCache) {
return verInfo{}, fmt.Errorf("cloning OSS repo failed")
return verInfo{}, fmt.Errorf("cloning tailscale.com repo failed")
}
}
@ -396,11 +373,11 @@ func infoFromDir(dir string) (verInfo, error) {
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"))
bs, err := os.ReadFile(filepath.Join(dir, "VERSION.txt"))
if err != nil {
return verInfo{}, err
}
major, minor, patch, err := parseVersion(s)
major, minor, patch, err := parseVersion(strings.TrimSpace(string(bs)))
return verInfo{
major: major,
minor: minor,
@ -448,20 +425,6 @@ func infoFromDir(dir string) (verInfo, error) {
}, nil
}
type modJSON struct {
Require []goPath
Replace []modReplace
}
type modReplace struct {
Old, New goPath
}
type goPath struct {
Path string
Version string
}
func parseVersion(s string) (major, minor, patch int, err error) {
fs := strings.Split(strings.TrimSpace(s), ".")
if len(fs) != 3 {
@ -488,11 +451,6 @@ func shortHash(hash string) string {
return hash[:9]
}
func readFile(path string) (string, error) {
bs, err := ioutil.ReadFile(path)
return strings.TrimSpace(string(bs)), err
}
// dirRunner executes commands in the specified dir.
type dirRunner string

88
version/mkversion/mkversion_test.go
View File

@ -38,14 +38,7 @@ func TestMkversion(t *testing.T) {
VERSION_SHORT="0.98.0"
VERSION_LONG="0.98.0-tabcdef"
VERSION_GIT_HASH="abcdef"
VERSION_EXTRA_HASH=""
VERSION_XCODE="100.98.0"
VERSION_XCODE_MACOS="273.27.3723"
VERSION_WINRES="0,98,0,0"
VERSION_TRACK="stable"
VERSION_MSIPRODUCT_AMD64="C653B075-AD91-5265-9DF8-0087D35D148D"
VERSION_MSIPRODUCT_ARM64="1C41380B-A742-5A3C-AF5D-DF7894DD0FB8"
VERSION_MSIPRODUCT_X86="4ABDDA14-7499-5C2E-A62A-DD435C50C4CB"`},
VERSION_TRACK="stable"`},
{mkInfo("abcdef", "", otherDate, 0, 98, 1, 0), `
VERSION_MAJOR=0
VERSION_MINOR=98
@ -53,14 +46,7 @@ func TestMkversion(t *testing.T) {
VERSION_SHORT="0.98.1"
VERSION_LONG="0.98.1-tabcdef"
VERSION_GIT_HASH="abcdef"
VERSION_EXTRA_HASH=""
VERSION_XCODE="100.98.1"
VERSION_XCODE_MACOS="273.27.3723"
VERSION_WINRES="0,98,1,0"
VERSION_TRACK="stable"
VERSION_MSIPRODUCT_AMD64="DFD6DCF2-06D8-5D19-BDA0-FAF31E44EC23"
VERSION_MSIPRODUCT_ARM64="A4CCF19C-372B-5007-AFD8-1AF661DFF670"
VERSION_MSIPRODUCT_X86="FF12E937-DDC4-5868-9B63-D35B2050D4EA"`},
VERSION_TRACK="stable"`},
{mkInfo("abcdef", "", otherDate, 1, 2, 9, 0), `
VERSION_MAJOR=1
VERSION_MINOR=2
@ -68,14 +54,7 @@ func TestMkversion(t *testing.T) {
VERSION_SHORT="1.2.9"
VERSION_LONG="1.2.9-tabcdef"
VERSION_GIT_HASH="abcdef"
VERSION_EXTRA_HASH=""
VERSION_XCODE="101.2.9"
VERSION_XCODE_MACOS="273.27.3723"
VERSION_WINRES="1,2,9,0"
VERSION_TRACK="stable"
VERSION_MSIPRODUCT_AMD64="D47B5157-FF26-5A10-A94E-50E4529303A9"
VERSION_MSIPRODUCT_ARM64="91D16F75-2A12-5E12-820A-67B89BF858E7"
VERSION_MSIPRODUCT_X86="8F1AC1C6-B93B-5C70-802E-6AE9591FA0D6"`},
VERSION_TRACK="stable"`},
{mkInfo("abcdef", "", otherDate, 1, 15, 0, 129), `
VERSION_MAJOR=1
VERSION_MINOR=15
@ -83,11 +62,27 @@ func TestMkversion(t *testing.T) {
VERSION_SHORT="1.15.129"
VERSION_LONG="1.15.129-tabcdef"
VERSION_GIT_HASH="abcdef"
VERSION_EXTRA_HASH=""
VERSION_TRACK="unstable"`},
{mkInfo("abcdef", "", otherDate, 1, 2, 0, 17), `
VERSION_MAJOR=1
VERSION_MINOR=2
VERSION_PATCH=0
VERSION_SHORT="1.2.0"
VERSION_LONG="1.2.0-17-tabcdef"
VERSION_GIT_HASH="abcdef"
VERSION_TRACK="stable"`},
{mkInfo("abcdef", "defghi", otherDate, 1, 15, 0, 129), `
VERSION_MAJOR=1
VERSION_MINOR=15
VERSION_PATCH=129
VERSION_SHORT="1.15.129"
VERSION_LONG="1.15.129-tabcdef-gdefghi"
VERSION_GIT_HASH="abcdef"
VERSION_TRACK="unstable"
VERSION_EXTRA_HASH="defghi"
VERSION_XCODE="101.15.129"
VERSION_XCODE_MACOS="273.27.3723"
VERSION_WINRES="1,15,129,0"
VERSION_TRACK="unstable"
VERSION_MSIPRODUCT_AMD64="89C96952-1FB8-5A4D-B02E-16A8060C56AA"
VERSION_MSIPRODUCT_ARM64="DB1A2E86-66C4-5CEC-8F4C-7DB805370F3A"
VERSION_MSIPRODUCT_X86="DC57C0C3-5164-5C92-86B3-2800CEFF0540"`},
@ -98,14 +93,7 @@ func TestMkversion(t *testing.T) {
VERSION_SHORT="1.2.0"
VERSION_LONG="1.2.0-17-tabcdef"
VERSION_GIT_HASH="abcdef"
VERSION_EXTRA_HASH=""
VERSION_XCODE="101.2.0"
VERSION_XCODE_MACOS="273.27.3723"
VERSION_WINRES="1,2,0,0"
VERSION_TRACK="stable"
VERSION_MSIPRODUCT_AMD64="0F9709AE-0E5E-51AF-BCCD-A25314B4CE8B"
VERSION_MSIPRODUCT_ARM64="39D5D46E-E644-5C80-9EF8-224AC1AD5969"
VERSION_MSIPRODUCT_X86="4487136B-2D11-5E42-BD80-B8529F3326F4"`},
VERSION_TRACK="stable"`},
{mkInfo("abcdef", "defghi", otherDate, 1, 15, 0, 129), `
VERSION_MAJOR=1
VERSION_MINOR=15
@ -113,41 +101,11 @@ func TestMkversion(t *testing.T) {
VERSION_SHORT="1.15.129"
VERSION_LONG="1.15.129-tabcdef-gdefghi"
VERSION_GIT_HASH="abcdef"
VERSION_TRACK="unstable"
VERSION_EXTRA_HASH="defghi"
VERSION_XCODE="101.15.129"
VERSION_XCODE_MACOS="273.27.3723"
VERSION_WINRES="1,15,129,0"
VERSION_TRACK="unstable"
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", "", otherDate, 1, 2, 0, 17), `
VERSION_MAJOR=1
VERSION_MINOR=2
VERSION_PATCH=0
VERSION_SHORT="1.2.0"
VERSION_LONG="1.2.0-17-tabcdef"
VERSION_GIT_HASH="abcdef"
VERSION_EXTRA_HASH=""
VERSION_XCODE="101.2.0"
VERSION_XCODE_MACOS="273.27.3723"
VERSION_WINRES="1,2,0,0"
VERSION_TRACK="stable"
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", otherDate, 1, 15, 0, 129), `
VERSION_MAJOR=1
VERSION_MINOR=15
VERSION_PATCH=129
VERSION_SHORT="1.15.129"
VERSION_LONG="1.15.129-tabcdef-gdefghi"
VERSION_GIT_HASH="abcdef"
VERSION_EXTRA_HASH="defghi"
VERSION_XCODE="101.15.129"
VERSION_XCODE_MACOS="273.27.3723"
VERSION_WINRES="1,15,129,0"
VERSION_TRACK="unstable"
VERSION_MSIPRODUCT_AMD64="89C96952-1FB8-5A4D-B02E-16A8060C56AA"
VERSION_MSIPRODUCT_ARM64="DB1A2E86-66C4-5CEC-8F4C-7DB805370F3A"
VERSION_MSIPRODUCT_X86="DC57C0C3-5164-5C92-86B3-2800CEFF0540"`},