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-rw-r--r--misc/dashboard/builder/main.go624
1 files changed, 624 insertions, 0 deletions
diff --git a/misc/dashboard/builder/main.go b/misc/dashboard/builder/main.go
new file mode 100644
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+++ b/misc/dashboard/builder/main.go
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+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+ "flag"
+ "fmt"
+ "io/ioutil"
+ "log"
+ "os"
+ "path"
+ "regexp"
+ "runtime"
+ "strconv"
+ "strings"
+ "time"
+ "xml"
+)
+
+const (
+ codeProject = "go"
+ codePyScript = "misc/dashboard/googlecode_upload.py"
+ hgUrl = "https://go.googlecode.com/hg/"
+ waitInterval = 30e9 // time to wait before checking for new revs
+ mkdirPerm = 0750
+ pkgBuildInterval = 1e9 * 60 * 60 * 24 // rebuild packages every 24 hours
+)
+
+// These variables are copied from the gobuilder's environment
+// to the envv of its subprocesses.
+var extraEnv = []string{
+ "GOHOSTOS",
+ "GOHOSTARCH",
+ "PATH",
+ "DISABLE_NET_TESTS",
+ "MAKEFLAGS",
+ "GOARM",
+}
+
+type Builder struct {
+ name string
+ goos, goarch string
+ key string
+ codeUsername string
+ codePassword string
+}
+
+var (
+ buildroot = flag.String("buildroot", path.Join(os.TempDir(), "gobuilder"), "Directory under which to build")
+ commitFlag = flag.Bool("commit", false, "upload information about new commits")
+ dashboard = flag.String("dashboard", "godashboard.appspot.com", "Go Dashboard Host")
+ buildRelease = flag.Bool("release", false, "Build and upload binary release archives")
+ buildRevision = flag.String("rev", "", "Build specified revision and exit")
+ buildCmd = flag.String("cmd", "./all.bash", "Build command (specify absolute or relative to go/src/)")
+ external = flag.Bool("external", false, "Build external packages")
+ parallel = flag.Bool("parallel", false, "Build multiple targets in parallel")
+ verbose = flag.Bool("v", false, "verbose")
+)
+
+var (
+ goroot string
+ binaryTagRe = regexp.MustCompile(`^(release\.r|weekly\.)[0-9\-.]+`)
+ releaseRe = regexp.MustCompile(`^release\.r[0-9\-.]+`)
+)
+
+func main() {
+ flag.Usage = func() {
+ fmt.Fprintf(os.Stderr, "usage: %s goos-goarch...\n", os.Args[0])
+ flag.PrintDefaults()
+ os.Exit(2)
+ }
+ flag.Parse()
+ if len(flag.Args()) == 0 && !*commitFlag {
+ flag.Usage()
+ }
+ goroot = path.Join(*buildroot, "goroot")
+ builders := make([]*Builder, len(flag.Args()))
+ for i, builder := range flag.Args() {
+ b, err := NewBuilder(builder)
+ if err != nil {
+ log.Fatal(err)
+ }
+ builders[i] = b
+ }
+
+ // set up work environment
+ if err := os.RemoveAll(*buildroot); err != nil {
+ log.Fatalf("Error removing build root (%s): %s", *buildroot, err)
+ }
+ if err := os.Mkdir(*buildroot, mkdirPerm); err != nil {
+ log.Fatalf("Error making build root (%s): %s", *buildroot, err)
+ }
+ if err := run(nil, *buildroot, "hg", "clone", hgUrl, goroot); err != nil {
+ log.Fatal("Error cloning repository:", err)
+ }
+
+ if *commitFlag {
+ if len(flag.Args()) == 0 {
+ commitWatcher()
+ return
+ }
+ go commitWatcher()
+ }
+
+ // if specified, build revision and return
+ if *buildRevision != "" {
+ hash, err := fullHash(*buildRevision)
+ if err != nil {
+ log.Fatal("Error finding revision: ", err)
+ }
+ for _, b := range builders {
+ if err := b.buildHash(hash); err != nil {
+ log.Println(err)
+ }
+ }
+ return
+ }
+
+ // external package build mode
+ if *external {
+ if len(builders) != 1 {
+ log.Fatal("only one goos-goarch should be specified with -external")
+ }
+ builders[0].buildExternal()
+ }
+
+ // go continuous build mode (default)
+ // check for new commits and build them
+ for {
+ built := false
+ t := time.Nanoseconds()
+ if *parallel {
+ done := make(chan bool)
+ for _, b := range builders {
+ go func(b *Builder) {
+ done <- b.build()
+ }(b)
+ }
+ for _ = range builders {
+ built = <-done || built
+ }
+ } else {
+ for _, b := range builders {
+ built = b.build() || built
+ }
+ }
+ // sleep if there was nothing to build
+ if !built {
+ time.Sleep(waitInterval)
+ }
+ // sleep if we're looping too fast.
+ t1 := time.Nanoseconds() - t
+ if t1 < waitInterval {
+ time.Sleep(waitInterval - t1)
+ }
+ }
+}
+
+func NewBuilder(builder string) (*Builder, os.Error) {
+ b := &Builder{name: builder}
+
+ // get goos/goarch from builder string
+ s := strings.SplitN(builder, "-", 3)
+ if len(s) >= 2 {
+ b.goos, b.goarch = s[0], s[1]
+ } else {
+ return nil, fmt.Errorf("unsupported builder form: %s", builder)
+ }
+
+ // read keys from keyfile
+ fn := path.Join(os.Getenv("HOME"), ".gobuildkey")
+ if s := fn + "-" + b.name; isFile(s) { // builder-specific file
+ fn = s
+ }
+ c, err := ioutil.ReadFile(fn)
+ if err != nil {
+ return nil, fmt.Errorf("readKeys %s (%s): %s", b.name, fn, err)
+ }
+ v := strings.Split(string(c), "\n")
+ b.key = v[0]
+ if len(v) >= 3 {
+ b.codeUsername, b.codePassword = v[1], v[2]
+ }
+
+ return b, nil
+}
+
+// buildExternal downloads and builds external packages, and
+// reports their build status to the dashboard.
+// It will re-build all packages after pkgBuildInterval nanoseconds or
+// a new release tag is found.
+func (b *Builder) buildExternal() {
+ var prevTag string
+ var nextBuild int64
+ for {
+ time.Sleep(waitInterval)
+ err := run(nil, goroot, "hg", "pull", "-u")
+ if err != nil {
+ log.Println("hg pull failed:", err)
+ continue
+ }
+ hash, tag, err := firstTag(releaseRe)
+ if err != nil {
+ log.Println(err)
+ continue
+ }
+ if *verbose {
+ log.Println("latest release:", tag)
+ }
+ // don't rebuild if there's no new release
+ // and it's been less than pkgBuildInterval
+ // nanoseconds since the last build.
+ if tag == prevTag && time.Nanoseconds() < nextBuild {
+ continue
+ }
+ // build will also build the packages
+ if err := b.buildHash(hash); err != nil {
+ log.Println(err)
+ continue
+ }
+ prevTag = tag
+ nextBuild = time.Nanoseconds() + pkgBuildInterval
+ }
+}
+
+// build checks for a new commit for this builder
+// and builds it if one is found.
+// It returns true if a build was attempted.
+func (b *Builder) build() bool {
+ defer func() {
+ err := recover()
+ if err != nil {
+ log.Println(b.name, "build:", err)
+ }
+ }()
+ hash, err := b.todo()
+ if err != nil {
+ log.Println(err)
+ return false
+ }
+ if hash == "" {
+ return false
+ }
+ // Look for hash locally before running hg pull.
+
+ if _, err := fullHash(hash[:12]); err != nil {
+ // Don't have hash, so run hg pull.
+ if err := run(nil, goroot, "hg", "pull"); err != nil {
+ log.Println("hg pull failed:", err)
+ return false
+ }
+ }
+ err = b.buildHash(hash)
+ if err != nil {
+ log.Println(err)
+ }
+ return true
+}
+
+func (b *Builder) buildHash(hash string) (err os.Error) {
+ defer func() {
+ if err != nil {
+ err = fmt.Errorf("%s build: %s: %s", b.name, hash, err)
+ }
+ }()
+
+ log.Println(b.name, "building", hash)
+
+ // create place in which to do work
+ workpath := path.Join(*buildroot, b.name+"-"+hash[:12])
+ err = os.Mkdir(workpath, mkdirPerm)
+ if err != nil {
+ return
+ }
+ defer os.RemoveAll(workpath)
+
+ // clone repo
+ err = run(nil, workpath, "hg", "clone", goroot, "go")
+ if err != nil {
+ return
+ }
+
+ // update to specified revision
+ err = run(nil, path.Join(workpath, "go"),
+ "hg", "update", hash)
+ if err != nil {
+ return
+ }
+
+ srcDir := path.Join(workpath, "go", "src")
+
+ // build
+ logfile := path.Join(workpath, "build.log")
+ buildLog, status, err := runLog(b.envv(), logfile, srcDir, *buildCmd)
+ if err != nil {
+ return fmt.Errorf("%s: %s", *buildCmd, err)
+ }
+
+ // if we're in external mode, build all packages and return
+ if *external {
+ if status != 0 {
+ return os.NewError("go build failed")
+ }
+ return b.buildPackages(workpath, hash)
+ }
+
+ if status != 0 {
+ // record failure
+ return b.recordResult(buildLog, hash)
+ }
+
+ // record success
+ if err = b.recordResult("", hash); err != nil {
+ return fmt.Errorf("recordResult: %s", err)
+ }
+
+ // finish here if codeUsername and codePassword aren't set
+ if b.codeUsername == "" || b.codePassword == "" || !*buildRelease {
+ return
+ }
+
+ // if this is a release, create tgz and upload to google code
+ releaseHash, release, err := firstTag(binaryTagRe)
+ if hash == releaseHash {
+ // clean out build state
+ err = run(b.envv(), srcDir, "./clean.bash", "--nopkg")
+ if err != nil {
+ return fmt.Errorf("clean.bash: %s", err)
+ }
+ // upload binary release
+ fn := fmt.Sprintf("go.%s.%s-%s.tar.gz", release, b.goos, b.goarch)
+ err = run(nil, workpath, "tar", "czf", fn, "go")
+ if err != nil {
+ return fmt.Errorf("tar: %s", err)
+ }
+ err = run(nil, workpath, path.Join(goroot, codePyScript),
+ "-s", release,
+ "-p", codeProject,
+ "-u", b.codeUsername,
+ "-w", b.codePassword,
+ "-l", fmt.Sprintf("%s,%s", b.goos, b.goarch),
+ fn)
+ }
+
+ return
+}
+
+// envv returns an environment for build/bench execution
+func (b *Builder) envv() []string {
+ if runtime.GOOS == "windows" {
+ return b.envvWindows()
+ }
+ e := []string{
+ "GOOS=" + b.goos,
+ "GOARCH=" + b.goarch,
+ "GOROOT_FINAL=/usr/local/go",
+ }
+ for _, k := range extraEnv {
+ s, err := os.Getenverror(k)
+ if err == nil {
+ e = append(e, k+"="+s)
+ }
+ }
+ return e
+}
+
+// windows version of envv
+func (b *Builder) envvWindows() []string {
+ start := map[string]string{
+ "GOOS": b.goos,
+ "GOARCH": b.goarch,
+ "GOROOT_FINAL": "/c/go",
+ // TODO(brainman): remove once we find make that does not hang.
+ "MAKEFLAGS": "-j1",
+ }
+ for _, name := range extraEnv {
+ s, err := os.Getenverror(name)
+ if err == nil {
+ start[name] = s
+ }
+ }
+ skip := map[string]bool{
+ "GOBIN": true,
+ "GOROOT": true,
+ "INCLUDE": true,
+ "LIB": true,
+ }
+ var e []string
+ for name, v := range start {
+ e = append(e, name+"="+v)
+ skip[name] = true
+ }
+ for _, kv := range os.Environ() {
+ s := strings.SplitN(kv, "=", 2)
+ name := strings.ToUpper(s[0])
+ switch {
+ case name == "":
+ // variables, like "=C:=C:\", just copy them
+ e = append(e, kv)
+ case !skip[name]:
+ e = append(e, kv)
+ skip[name] = true
+ }
+ }
+ return e
+}
+
+func isDirectory(name string) bool {
+ s, err := os.Stat(name)
+ return err == nil && s.IsDirectory()
+}
+
+func isFile(name string) bool {
+ s, err := os.Stat(name)
+ return err == nil && (s.IsRegular() || s.IsSymlink())
+}
+
+// commitWatcher polls hg for new commits and tells the dashboard about them.
+func commitWatcher() {
+ // Create builder just to get master key.
+ b, err := NewBuilder("mercurial-commit")
+ if err != nil {
+ log.Fatal(err)
+ }
+ for {
+ if *verbose {
+ log.Printf("poll...")
+ }
+ commitPoll(b.key)
+ if *verbose {
+ log.Printf("sleep...")
+ }
+ time.Sleep(60e9)
+ }
+}
+
+// HgLog represents a single Mercurial revision.
+type HgLog struct {
+ Hash string
+ Author string
+ Date string
+ Desc string
+ Parent string
+
+ // Internal metadata
+ added bool
+}
+
+// logByHash is a cache of all Mercurial revisions we know about,
+// indexed by full hash.
+var logByHash = map[string]*HgLog{}
+
+// xmlLogTemplate is a template to pass to Mercurial to make
+// hg log print the log in valid XML for parsing with xml.Unmarshal.
+const xmlLogTemplate = `
+ <log>
+ <hash>{node|escape}</hash>
+ <parent>{parent|escape}</parent>
+ <author>{author|escape}</author>
+ <date>{date}</date>
+ <desc>{desc|escape}</desc>
+ </log>
+`
+
+// commitPoll pulls any new revisions from the hg server
+// and tells the server about them.
+func commitPoll(key string) {
+ // Catch unexpected panics.
+ defer func() {
+ if err := recover(); err != nil {
+ log.Printf("commitPoll panic: %s", err)
+ }
+ }()
+
+ if err := run(nil, goroot, "hg", "pull"); err != nil {
+ log.Printf("hg pull: %v", err)
+ return
+ }
+
+ const N = 20 // how many revisions to grab
+
+ data, _, err := runLog(nil, "", goroot, "hg", "log",
+ "--encoding=utf-8",
+ "--limit="+strconv.Itoa(N),
+ "--template="+xmlLogTemplate,
+ )
+ if err != nil {
+ log.Printf("hg log: %v", err)
+ return
+ }
+
+ var logStruct struct {
+ Log []HgLog
+ }
+ err = xml.Unmarshal(strings.NewReader("<top>"+data+"</top>"), &logStruct)
+ if err != nil {
+ log.Printf("unmarshal hg log: %v", err)
+ return
+ }
+
+ logs := logStruct.Log
+
+ // Pass 1. Fill in parents and add new log entries to logsByHash.
+ // Empty parent means take parent from next log entry.
+ // Non-empty parent has form 1234:hashhashhash; we want full hash.
+ for i := range logs {
+ l := &logs[i]
+ log.Printf("hg log: %s < %s\n", l.Hash, l.Parent)
+ if l.Parent == "" && i+1 < len(logs) {
+ l.Parent = logs[i+1].Hash
+ } else if l.Parent != "" {
+ l.Parent, _ = fullHash(l.Parent)
+ }
+ if l.Parent == "" {
+ // Can't create node without parent.
+ continue
+ }
+
+ if logByHash[l.Hash] == nil {
+ // Make copy to avoid pinning entire slice when only one entry is new.
+ t := *l
+ logByHash[t.Hash] = &t
+ }
+ }
+
+ for i := range logs {
+ l := &logs[i]
+ if l.Parent == "" {
+ continue
+ }
+ addCommit(l.Hash, key)
+ }
+}
+
+// addCommit adds the commit with the named hash to the dashboard.
+// key is the secret key for authentication to the dashboard.
+// It avoids duplicate effort.
+func addCommit(hash, key string) bool {
+ l := logByHash[hash]
+ if l == nil {
+ return false
+ }
+ if l.added {
+ return true
+ }
+
+ // Check for already added, perhaps in an earlier run.
+ if dashboardCommit(hash) {
+ log.Printf("%s already on dashboard\n", hash)
+ // Record that this hash is on the dashboard,
+ // as must be all its parents.
+ for l != nil {
+ l.added = true
+ l = logByHash[l.Parent]
+ }
+ return true
+ }
+
+ // Create parent first, to maintain some semblance of order.
+ if !addCommit(l.Parent, key) {
+ return false
+ }
+
+ // Create commit.
+ if err := postCommit(key, l); err != nil {
+ log.Printf("failed to add %s to dashboard: %v", key, err)
+ return false
+ }
+ return true
+}
+
+// fullHash returns the full hash for the given Mercurial revision.
+func fullHash(rev string) (hash string, err os.Error) {
+ defer func() {
+ if err != nil {
+ err = fmt.Errorf("fullHash: %s: %s", rev, err)
+ }
+ }()
+ s, _, err := runLog(nil, "", goroot,
+ "hg", "log",
+ "--encoding=utf-8",
+ "--rev="+rev,
+ "--limit=1",
+ "--template={node}",
+ )
+ if err != nil {
+ return
+ }
+ s = strings.TrimSpace(s)
+ if s == "" {
+ return "", fmt.Errorf("cannot find revision")
+ }
+ if len(s) != 40 {
+ return "", fmt.Errorf("hg returned invalid hash " + s)
+ }
+ return s, nil
+}
+
+var revisionRe = regexp.MustCompile(`^([^ ]+) +[0-9]+:([0-9a-f]+)$`)
+
+// firstTag returns the hash and tag of the most recent tag matching re.
+func firstTag(re *regexp.Regexp) (hash string, tag string, err os.Error) {
+ o, _, err := runLog(nil, "", goroot, "hg", "tags")
+ for _, l := range strings.Split(o, "\n") {
+ if l == "" {
+ continue
+ }
+ s := revisionRe.FindStringSubmatch(l)
+ if s == nil {
+ err = os.NewError("couldn't find revision number")
+ return
+ }
+ if !re.MatchString(s[1]) {
+ continue
+ }
+ tag = s[1]
+ hash, err = fullHash(s[2])
+ return
+ }
+ err = os.NewError("no matching tag found")
+ return
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-26 08:32:33 +0000