syncthing/build.go
2015-04-29 10:38:02 +02:00

661 lines
14 KiB
Go

// Copyright (C) 2014 The Syncthing Authors.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
// +build ignore
package main
import (
"archive/tar"
"archive/zip"
"bytes"
"compress/gzip"
"crypto/md5"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"os/exec"
"os/user"
"path/filepath"
"regexp"
"runtime"
"strconv"
"strings"
"time"
)
var (
versionRe = regexp.MustCompile(`-[0-9]{1,3}-g[0-9a-f]{5,10}`)
goarch string
goos string
noupgrade bool
version string
race bool
)
const minGoVersion = 1.3
func main() {
log.SetOutput(os.Stdout)
log.SetFlags(0)
if os.Getenv("GOPATH") == "" {
cwd, err := os.Getwd()
if err != nil {
log.Fatal(err)
}
gopath := filepath.Clean(filepath.Join(cwd, "../../../../"))
log.Println("GOPATH is", gopath)
os.Setenv("GOPATH", gopath)
}
os.Setenv("PATH", fmt.Sprintf("%s%cbin%c%s", os.Getenv("GOPATH"), os.PathSeparator, os.PathListSeparator, os.Getenv("PATH")))
flag.StringVar(&goarch, "goarch", runtime.GOARCH, "GOARCH")
flag.StringVar(&goos, "goos", runtime.GOOS, "GOOS")
flag.BoolVar(&noupgrade, "no-upgrade", noupgrade, "Disable upgrade functionality")
flag.StringVar(&version, "version", getVersion(), "Set compiled in version string")
flag.BoolVar(&race, "race", race, "Use race detector")
flag.Parse()
switch goarch {
case "386", "amd64", "arm":
break
default:
log.Printf("Unknown goarch %q; proceed with caution!", goarch)
}
checkRequiredGoVersion()
if flag.NArg() == 0 {
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
}
install("./cmd/...", tags)
vet("./cmd/syncthing")
vet("./internal/...")
lint("./cmd/syncthing")
lint("./internal/...")
return
}
for _, cmd := range flag.Args() {
switch cmd {
case "setup":
setup()
case "install":
pkg := "./cmd/..."
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
}
install(pkg, tags)
case "build":
pkg := "./cmd/syncthing"
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
}
build(pkg, tags)
case "test":
test("./...")
case "assets":
assets()
case "xdr":
xdr()
case "translate":
translate()
case "transifex":
transifex()
case "deps":
deps()
case "tar":
buildTar()
case "zip":
buildZip()
case "clean":
clean()
case "vet":
vet("./cmd/syncthing")
vet("./internal/...")
case "lint":
lint("./cmd/syncthing")
lint("./internal/...")
default:
log.Fatalf("Unknown command %q", cmd)
}
}
}
func checkRequiredGoVersion() {
ver := run("go", "version")
re := regexp.MustCompile(`go version go(\d+\.\d+)`)
if m := re.FindSubmatch(ver); len(m) == 2 {
vs := string(m[1])
// This is a standard go build. Verify that it's new enough.
f, err := strconv.ParseFloat(vs, 64)
if err != nil {
log.Printf("*** Couldn't parse Go version out of %q.\n*** This isn't known to work, proceed on your own risk.", vs)
return
}
if f < minGoVersion {
log.Fatalf("*** Go version %.01f is less than required %.01f.\n*** This is known not to work, not proceeding.", f, minGoVersion)
}
} else {
log.Printf("*** Unknown Go version %q.\n*** This isn't known to work, proceed on your own risk.", ver)
}
}
func setup() {
runPrint("go", "get", "-v", "golang.org/x/tools/cmd/cover")
runPrint("go", "get", "-v", "golang.org/x/tools/cmd/vet")
runPrint("go", "get", "-v", "golang.org/x/net/html")
runPrint("go", "get", "-v", "github.com/tools/godep")
}
func test(pkg string) {
setBuildEnv()
runPrint("go", "test", "-short", "-timeout", "60s", pkg)
}
func install(pkg string, tags []string) {
os.Setenv("GOBIN", "./bin")
args := []string{"install", "-v", "-ldflags", ldflags()}
if len(tags) > 0 {
args = append(args, "-tags", strings.Join(tags, ","))
}
if race {
args = append(args, "-race")
}
args = append(args, pkg)
setBuildEnv()
runPrint("go", args...)
}
func build(pkg string, tags []string) {
binary := "syncthing"
if goos == "windows" {
binary += ".exe"
}
rmr(binary, binary+".md5")
args := []string{"build", "-ldflags", ldflags()}
if len(tags) > 0 {
args = append(args, "-tags", strings.Join(tags, ","))
}
if race {
args = append(args, "-race")
}
args = append(args, pkg)
setBuildEnv()
runPrint("go", args...)
// Create an md5 checksum of the binary, to be included in the archive for
// automatic upgrades.
err := md5File(binary)
if err != nil {
log.Fatal(err)
}
}
func buildTar() {
name := archiveName()
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
name += "-noupgrade"
}
build("./cmd/syncthing", tags)
filename := name + ".tar.gz"
files := []archiveFile{
{src: "README.md", dst: name + "/README.txt"},
{src: "LICENSE", dst: name + "/LICENSE.txt"},
{src: "AUTHORS", dst: name + "/AUTHORS.txt"},
{src: "syncthing", dst: name + "/syncthing"},
{src: "syncthing.md5", dst: name + "/syncthing.md5"},
}
for _, file := range listFiles("etc") {
files = append(files, archiveFile{src: file, dst: name + "/" + file})
}
for _, file := range listFiles("extra") {
files = append(files, archiveFile{src: file, dst: name + "/" + filepath.Base(file)})
}
tarGz(filename, files)
log.Println(filename)
}
func buildZip() {
name := archiveName()
var tags []string
if noupgrade {
tags = []string{"noupgrade"}
name += "-noupgrade"
}
build("./cmd/syncthing", tags)
filename := name + ".zip"
files := []archiveFile{
{src: "README.md", dst: name + "/README.txt"},
{src: "LICENSE", dst: name + "/LICENSE.txt"},
{src: "AUTHORS", dst: name + "/AUTHORS.txt"},
{src: "syncthing.exe", dst: name + "/syncthing.exe"},
{src: "syncthing.exe.md5", dst: name + "/syncthing.exe.md5"},
}
for _, file := range listFiles("extra") {
files = append(files, archiveFile{src: file, dst: name + "/" + filepath.Base(file)})
}
zipFile(filename, files)
log.Println(filename)
}
func listFiles(dir string) []string {
var res []string
filepath.Walk(dir, func(path string, fi os.FileInfo, err error) error {
if err != nil {
return err
}
if fi.Mode().IsRegular() {
res = append(res, path)
}
return nil
})
return res
}
func setBuildEnv() {
os.Setenv("GOOS", goos)
os.Setenv("GOARCH", goarch)
wd, err := os.Getwd()
if err != nil {
log.Println("Warning: can't determine current dir:", err)
log.Println("Build might not work as expected")
}
os.Setenv("GOPATH", fmt.Sprintf("%s%c%s", filepath.Join(wd, "Godeps", "_workspace"), os.PathListSeparator, os.Getenv("GOPATH")))
log.Println("GOPATH=" + os.Getenv("GOPATH"))
}
func assets() {
setBuildEnv()
runPipe("internal/auto/gui.files.go", "go", "run", "cmd/genassets/main.go", "gui")
}
func xdr() {
runPrint("go", "generate", "./internal/discover", "./internal/db")
}
func translate() {
os.Chdir("gui/assets/lang")
runPipe("lang-en-new.json", "go", "run", "../../../cmd/translate/main.go", "lang-en.json", "../../index.html")
os.Remove("lang-en.json")
err := os.Rename("lang-en-new.json", "lang-en.json")
if err != nil {
log.Fatal(err)
}
os.Chdir("../../..")
}
func transifex() {
os.Chdir("gui/assets/lang")
runPrint("go", "run", "../../../cmd/transifexdl/main.go")
os.Chdir("../../..")
assets()
}
func deps() {
rmr("Godeps")
runPrint("godep", "save", "./cmd/...")
}
func clean() {
rmr("bin", "Godeps/_workspace/pkg", "Godeps/_workspace/bin")
rmr(filepath.Join(os.Getenv("GOPATH"), fmt.Sprintf("pkg/%s_%s/github.com/syncthing", goos, goarch)))
}
func ldflags() string {
var b bytes.Buffer
b.WriteString("-w")
b.WriteString(fmt.Sprintf(" -X main.Version %s", version))
b.WriteString(fmt.Sprintf(" -X main.BuildStamp %d", buildStamp()))
b.WriteString(fmt.Sprintf(" -X main.BuildUser %s", buildUser()))
b.WriteString(fmt.Sprintf(" -X main.BuildHost %s", buildHost()))
b.WriteString(fmt.Sprintf(" -X main.BuildEnv %s", buildEnvironment()))
return b.String()
}
func rmr(paths ...string) {
for _, path := range paths {
log.Println("rm -r", path)
os.RemoveAll(path)
}
}
func getReleaseVersion() (string, error) {
fd, err := os.Open("RELEASE")
if err != nil {
return "", err
}
defer fd.Close()
bs, err := ioutil.ReadAll(fd)
if err != nil {
return "", err
}
return string(bytes.TrimSpace(bs)), nil
}
func getGitVersion() (string, error) {
v, err := runError("git", "describe", "--always", "--dirty")
if err != nil {
return "", err
}
v = versionRe.ReplaceAllFunc(v, func(s []byte) []byte {
s[0] = '+'
return s
})
return string(v), nil
}
func getVersion() string {
// First try for a RELEASE file,
if ver, err := getReleaseVersion(); err == nil {
return ver
}
// ... then see if we have a Git tag.
if ver, err := getGitVersion(); err == nil {
return ver
}
// This seems to be a dev build.
return "unknown-dev"
}
func buildStamp() int64 {
bs, err := runError("git", "show", "-s", "--format=%ct")
if err != nil {
return time.Now().Unix()
}
s, _ := strconv.ParseInt(string(bs), 10, 64)
return s
}
func buildUser() string {
u, err := user.Current()
if err != nil {
return "unknown-user"
}
return strings.Replace(u.Username, " ", "-", -1)
}
func buildHost() string {
h, err := os.Hostname()
if err != nil {
return "unknown-host"
}
return h
}
func buildEnvironment() string {
if v := os.Getenv("ENVIRONMENT"); len(v) > 0 {
return v
}
return "default"
}
func buildArch() string {
os := goos
if os == "darwin" {
os = "macosx"
}
return fmt.Sprintf("%s-%s", os, goarch)
}
func archiveName() string {
return fmt.Sprintf("syncthing-%s-%s", buildArch(), version)
}
func run(cmd string, args ...string) []byte {
bs, err := runError(cmd, args...)
if err != nil {
log.Println(cmd, strings.Join(args, " "))
log.Println(string(bs))
log.Fatal(err)
}
return bytes.TrimSpace(bs)
}
func runError(cmd string, args ...string) ([]byte, error) {
ecmd := exec.Command(cmd, args...)
bs, err := ecmd.CombinedOutput()
return bytes.TrimSpace(bs), err
}
func runPrint(cmd string, args ...string) {
log.Println(cmd, strings.Join(args, " "))
ecmd := exec.Command(cmd, args...)
ecmd.Stdout = os.Stdout
ecmd.Stderr = os.Stderr
err := ecmd.Run()
if err != nil {
log.Fatal(err)
}
}
func runPipe(file, cmd string, args ...string) {
log.Println(cmd, strings.Join(args, " "), ">", file)
fd, err := os.Create(file)
if err != nil {
log.Fatal(err)
}
ecmd := exec.Command(cmd, args...)
ecmd.Stdout = fd
ecmd.Stderr = os.Stderr
err = ecmd.Run()
if err != nil {
log.Fatal(err)
}
fd.Close()
}
type archiveFile struct {
src string
dst string
}
func tarGz(out string, files []archiveFile) {
fd, err := os.Create(out)
if err != nil {
log.Fatal(err)
}
gw := gzip.NewWriter(fd)
tw := tar.NewWriter(gw)
for _, f := range files {
sf, err := os.Open(f.src)
if err != nil {
log.Fatal(err)
}
info, err := sf.Stat()
if err != nil {
log.Fatal(err)
}
h := &tar.Header{
Name: f.dst,
Size: info.Size(),
Mode: int64(info.Mode()),
ModTime: info.ModTime(),
}
err = tw.WriteHeader(h)
if err != nil {
log.Fatal(err)
}
_, err = io.Copy(tw, sf)
if err != nil {
log.Fatal(err)
}
sf.Close()
}
err = tw.Close()
if err != nil {
log.Fatal(err)
}
err = gw.Close()
if err != nil {
log.Fatal(err)
}
err = fd.Close()
if err != nil {
log.Fatal(err)
}
}
func zipFile(out string, files []archiveFile) {
fd, err := os.Create(out)
if err != nil {
log.Fatal(err)
}
zw := zip.NewWriter(fd)
for _, f := range files {
sf, err := os.Open(f.src)
if err != nil {
log.Fatal(err)
}
info, err := sf.Stat()
if err != nil {
log.Fatal(err)
}
fh, err := zip.FileInfoHeader(info)
if err != nil {
log.Fatal(err)
}
fh.Name = f.dst
fh.Method = zip.Deflate
if strings.HasSuffix(f.dst, ".txt") {
// Text file. Read it and convert line endings.
bs, err := ioutil.ReadAll(sf)
if err != nil {
log.Fatal(err)
}
bs = bytes.Replace(bs, []byte{'\n'}, []byte{'\n', '\r'}, -1)
fh.UncompressedSize = uint32(len(bs))
fh.UncompressedSize64 = uint64(len(bs))
of, err := zw.CreateHeader(fh)
if err != nil {
log.Fatal(err)
}
of.Write(bs)
} else {
// Binary file. Copy verbatim.
of, err := zw.CreateHeader(fh)
if err != nil {
log.Fatal(err)
}
_, err = io.Copy(of, sf)
if err != nil {
log.Fatal(err)
}
}
}
err = zw.Close()
if err != nil {
log.Fatal(err)
}
err = fd.Close()
if err != nil {
log.Fatal(err)
}
}
func md5File(file string) error {
fd, err := os.Open(file)
if err != nil {
return err
}
defer fd.Close()
h := md5.New()
_, err = io.Copy(h, fd)
if err != nil {
return err
}
out, err := os.Create(file + ".md5")
if err != nil {
return err
}
_, err = fmt.Fprintf(out, "%x\n", h.Sum(nil))
if err != nil {
return err
}
return out.Close()
}
func vet(pkg string) {
bs, err := runError("go", "vet", pkg)
if err != nil && err.Error() == "exit status 3" || bytes.Contains(bs, []byte("no such tool \"vet\"")) {
// Go said there is no go vet
log.Println(`- No go vet, no vetting. Try "go get -u golang.org/x/tools/cmd/vet".`)
return
}
falseAlarmComposites := regexp.MustCompile("composite literal uses unkeyed fields")
exitStatus := regexp.MustCompile("exit status 1")
for _, line := range bytes.Split(bs, []byte("\n")) {
if falseAlarmComposites.Match(line) || exitStatus.Match(line) {
continue
}
log.Printf("%s", line)
}
}
func lint(pkg string) {
bs, err := runError("golint", pkg)
if err != nil {
log.Println(`- No golint, not linting. Try "go get -u github.com/golang/lint/golint".`)
return
}
analCommentPolicy := regexp.MustCompile(`exported (function|method|const|type|var) [^\s]+ should have comment`)
for _, line := range bytes.Split(bs, []byte("\n")) {
if analCommentPolicy.Match(line) {
continue
}
log.Printf("%s", line)
}
}