lib/install/deps.go

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 package install
   6
   7 import (
   8         "bufio"
   9         "bytes"
  10         "context"
  11         "errors"
  12         "flag"
  13         "fmt"
  14         "io"
  15         "os"
  16         "os/exec"
  17         "os/user"
  18         "path/filepath"
  19         "strconv"
  20         "strings"
  21         "syscall"
  22         "time"
  23
  24         "git.arvados.org/arvados.git/lib/cmd"
  25         "git.arvados.org/arvados.git/sdk/go/ctxlog"
  26         "github.com/lib/pq"
  27 )
  28
  29 var Command cmd.Handler = &installCommand{}
  30
  31 const devtestDatabasePassword = "insecure_arvados_test"
  32
  33 type installCommand struct {
  34         ClusterType    string
  35         SourcePath     string
  36         PackageVersion string
  37 }
  38
  39 func (inst *installCommand) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
  40         logger := ctxlog.New(stderr, "text", "info")
  41         ctx := ctxlog.Context(context.Background(), logger)
  42         ctx, cancel := context.WithCancel(ctx)
  43         defer cancel()
  44
  45         var err error
  46         defer func() {
  47                 if err != nil {
  48                         logger.WithError(err).Info("exiting")
  49                 }
  50         }()
  51
  52         flags := flag.NewFlagSet(prog, flag.ContinueOnError)
  53         flags.SetOutput(stderr)
  54         versionFlag := flags.Bool("version", false, "Write version information to stdout and exit 0")
  55         flags.StringVar(&inst.ClusterType, "type", "production", "cluster `type`: development, test, production, or package")
  56         flags.StringVar(&inst.SourcePath, "source", "/arvados", "source tree location (required for -type=package)")
  57         flags.StringVar(&inst.PackageVersion, "package-version", "0.0.0", "version string to embed in executable files")
  58         err = flags.Parse(args)
  59         if err == flag.ErrHelp {
  60                 err = nil
  61                 return 0
  62         } else if err != nil {
  63                 return 2
  64         } else if *versionFlag {
  65                 return cmd.Version.RunCommand(prog, args, stdin, stdout, stderr)
  66         } else if len(flags.Args()) > 0 {
  67                 err = fmt.Errorf("unrecognized command line arguments: %v", flags.Args())
  68                 return 2
  69         }
  70
  71         var dev, test, prod, pkg bool
  72         switch inst.ClusterType {
  73         case "development":
  74                 dev = true
  75         case "test":
  76                 test = true
  77         case "production":
  78                 prod = true
  79         case "package":
  80                 pkg = true
  81         default:
  82                 err = fmt.Errorf("invalid cluster type %q (must be 'development', 'test', 'production', or 'package')", inst.ClusterType)
  83                 return 2
  84         }
  85
  86         if prod {
  87                 err = errors.New("production install is not yet implemented")
  88                 return 1
  89         }
  90
  91         osv, err := identifyOS()
  92         if err != nil {
  93                 return 1
  94         }
  95
  96         listdir, err := os.Open("/var/lib/apt/lists")
  97         if err != nil {
  98                 logger.Warnf("error while checking whether to run apt-get update: %s", err)
  99         } else if names, _ := listdir.Readdirnames(1); len(names) == 0 {
 100                 // Special case for a base docker image where the
 101                 // package cache has been deleted and all "apt-get
 102                 // install" commands will fail unless we fetch repos.
 103                 cmd := exec.CommandContext(ctx, "apt-get", "update")
 104                 cmd.Stdout = stdout
 105                 cmd.Stderr = stderr
 106                 err = cmd.Run()
 107                 if err != nil {
 108                         return 1
 109                 }
 110         }
 111
 112         pkgs := prodpkgs(osv)
 113
 114         if pkg {
 115                 pkgs = append(pkgs,
 116                         "dpkg-dev",
 117                         "rsync",
 118                 )
 119         }
 120
 121         if dev || test || pkg {
 122                 pkgs = append(pkgs,
 123                         "automake",
 124                         "bison",
 125                         "bsdmainutils",
 126                         "build-essential",
 127                         "cadaver",
 128                         "cython",
 129                         "daemontools", // lib/boot uses setuidgid to drop privileges when running as root
 130                         "default-jdk-headless",
 131                         "default-jre-headless",
 132                         "gettext",
 133                         "iceweasel",
 134                         "libattr1-dev",
 135                         "libcrypt-ssleay-perl",
 136                         "libfuse-dev",
 137                         "libgnutls28-dev",
 138                         "libjson-perl",
 139                         "libpam-dev",
 140                         "libpcre3-dev",
 141                         "libpython2.7-dev",
 142                         "libreadline-dev",
 143                         "libssl-dev",
 144                         "libwww-perl",
 145                         "libxml2-dev",
 146                         "libxslt1-dev",
 147                         "linkchecker",
 148                         "lsof",
 149                         "make",
 150                         "net-tools",
 151                         "pandoc",
 152                         "perl-modules",
 153                         "pkg-config",
 154                         "postgresql",
 155                         "postgresql-contrib",
 156                         "python3-dev",
 157                         "python-epydoc",
 158                         "r-base",
 159                         "r-cran-testthat",
 160                         "sudo",
 161                         "virtualenv",
 162                         "wget",
 163                         "xvfb",
 164                 )
 165                 switch {
 166                 case osv.Debian && osv.Major >= 10:
 167                         pkgs = append(pkgs, "libcurl4")
 168                 default:
 169                         pkgs = append(pkgs, "libcurl3")
 170                 }
 171                 cmd := exec.CommandContext(ctx, "apt-get", "install", "--yes", "--no-install-recommends")
 172                 cmd.Args = append(cmd.Args, pkgs...)
 173                 cmd.Env = append(os.Environ(), "DEBIAN_FRONTEND=noninteractive")
 174                 cmd.Stdout = stdout
 175                 cmd.Stderr = stderr
 176                 err = cmd.Run()
 177                 if err != nil {
 178                         return 1
 179                 }
 180         }
 181
 182         os.Mkdir("/var/lib/arvados", 0755)
 183         os.Mkdir("/var/lib/arvados/tmp", 0700)
 184         if prod || pkg {
 185                 os.Mkdir("/var/lib/arvados/wwwtmp", 0700)
 186                 u, er := user.Lookup("www-data")
 187                 if er != nil {
 188                         err = fmt.Errorf("user.Lookup(%q): %w", "www-data", er)
 189                         return 1
 190                 }
 191                 uid, _ := strconv.Atoi(u.Uid)
 192                 gid, _ := strconv.Atoi(u.Gid)
 193                 err = os.Chown("/var/lib/arvados/wwwtmp", uid, gid)
 194                 if err != nil {
 195                         return 1
 196                 }
 197         }
 198         rubyversion := "2.5.7"
 199         if haverubyversion, err := exec.Command("/var/lib/arvados/bin/ruby", "-v").CombinedOutput(); err == nil && bytes.HasPrefix(haverubyversion, []byte("ruby "+rubyversion)) {
 200                 logger.Print("ruby " + rubyversion + " already installed")
 201         } else {
 202                 err = runBash(`
 203 tmp=/var/lib/arvados/tmp/ruby-`+rubyversion+`
 204 trap "rm -r ${tmp}" ERR
 205 wget --progress=dot:giga -O- https://cache.ruby-lang.org/pub/ruby/2.5/ruby-`+rubyversion+`.tar.gz | tar -C /var/lib/arvados/tmp -xzf -
 206 cd ${tmp}
 207 ./configure --disable-install-static-library --enable-shared --disable-install-doc --prefix /var/lib/arvados
 208 make -j8
 209 make install
 210 /var/lib/arvados/bin/gem install bundler --no-ri --no-rdoc
 211 # "gem update --system" can be removed when we use ruby ≥2.6.3: https://bundler.io/blog/2019/05/14/solutions-for-cant-find-gem-bundler-with-executable-bundle.html
 212 /var/lib/arvados/bin/gem update --system --no-ri --no-rdoc
 213 rm -r ${tmp}
 214 `, stdout, stderr)
 215                 if err != nil {
 216                         return 1
 217                 }
 218         }
 219
 220         if !prod {
 221                 goversion := "1.14"
 222                 if havegoversion, err := exec.Command("/usr/local/bin/go", "version").CombinedOutput(); err == nil && bytes.HasPrefix(havegoversion, []byte("go version go"+goversion+" ")) {
 223                         logger.Print("go " + goversion + " already installed")
 224                 } else {
 225                         err = runBash(`
 226 cd /tmp
 227 wget --progress=dot:giga -O- https://storage.googleapis.com/golang/go`+goversion+`.linux-amd64.tar.gz | tar -C /var/lib/arvados -xzf -
 228 ln -sf /var/lib/arvados/go/bin/* /usr/local/bin/
 229 `, stdout, stderr)
 230                         if err != nil {
 231                                 return 1
 232                         }
 233                 }
 234         }
 235
 236         if !prod && !pkg {
 237                 pjsversion := "1.9.8"
 238                 if havepjsversion, err := exec.Command("/usr/local/bin/phantomjs", "--version").CombinedOutput(); err == nil && string(havepjsversion) == "1.9.8\n" {
 239                         logger.Print("phantomjs " + pjsversion + " already installed")
 240                 } else {
 241                         err = runBash(`
 242 PJS=phantomjs-`+pjsversion+`-linux-x86_64
 243 wget --progress=dot:giga -O- https://bitbucket.org/ariya/phantomjs/downloads/$PJS.tar.bz2 | tar -C /var/lib/arvados -xjf -
 244 ln -sf /var/lib/arvados/$PJS/bin/phantomjs /usr/local/bin/
 245 `, stdout, stderr)
 246                         if err != nil {
 247                                 return 1
 248                         }
 249                 }
 250
 251                 geckoversion := "0.24.0"
 252                 if havegeckoversion, err := exec.Command("/usr/local/bin/geckodriver", "--version").CombinedOutput(); err == nil && strings.Contains(string(havegeckoversion), " "+geckoversion+" ") {
 253                         logger.Print("geckodriver " + geckoversion + " already installed")
 254                 } else {
 255                         err = runBash(`
 256 GD=v`+geckoversion+`
 257 wget --progress=dot:giga -O- https://github.com/mozilla/geckodriver/releases/download/$GD/geckodriver-$GD-linux64.tar.gz | tar -C /var/lib/arvados/bin -xzf - geckodriver
 258 ln -sf /var/lib/arvados/bin/geckodriver /usr/local/bin/
 259 `, stdout, stderr)
 260                         if err != nil {
 261                                 return 1
 262                         }
 263                 }
 264
 265                 nodejsversion := "v8.15.1"
 266                 if havenodejsversion, err := exec.Command("/usr/local/bin/node", "--version").CombinedOutput(); err == nil && string(havenodejsversion) == nodejsversion+"\n" {
 267                         logger.Print("nodejs " + nodejsversion + " already installed")
 268                 } else {
 269                         err = runBash(`
 270 NJS=`+nodejsversion+`
 271 wget --progress=dot:giga -O- https://nodejs.org/dist/${NJS}/node-${NJS}-linux-x64.tar.xz | sudo tar -C /var/lib/arvados -xJf -
 272 ln -sf /var/lib/arvados/node-${NJS}-linux-x64/bin/{node,npm} /usr/local/bin/
 273 `, stdout, stderr)
 274                         if err != nil {
 275                                 return 1
 276                         }
 277                 }
 278
 279                 gradleversion := "5.3.1"
 280                 if havegradleversion, err := exec.Command("/usr/local/bin/gradle", "--version").CombinedOutput(); err == nil && strings.Contains(string(havegradleversion), "Gradle "+gradleversion+"\n") {
 281                         logger.Print("gradle " + gradleversion + " already installed")
 282                 } else {
 283                         err = runBash(`
 284 G=`+gradleversion+`
 285 zip=/var/lib/arvados/tmp/gradle-${G}-bin.zip
 286 trap "rm ${zip}" ERR
 287 wget --progress=dot:giga -O${zip} https://services.gradle.org/distributions/gradle-${G}-bin.zip
 288 unzip -o -d /var/lib/arvados ${zip}
 289 ln -sf /var/lib/arvados/gradle-${G}/bin/gradle /usr/local/bin/
 290 rm ${zip}
 291 `, stdout, stderr)
 292                         if err != nil {
 293                                 return 1
 294                         }
 295                 }
 296
 297                 // The entry in /etc/locale.gen is "en_US.UTF-8"; once
 298                 // it's installed, locale -a reports it as
 299                 // "en_US.utf8".
 300                 wantlocale := "en_US.UTF-8"
 301                 if havelocales, err := exec.Command("locale", "-a").CombinedOutput(); err == nil && bytes.Contains(havelocales, []byte(strings.Replace(wantlocale+"\n", "UTF-", "utf", 1))) {
 302                         logger.Print("locale " + wantlocale + " already installed")
 303                 } else {
 304                         err = runBash(`sed -i 's/^# *\(`+wantlocale+`\)/\1/' /etc/locale.gen && locale-gen`, stdout, stderr)
 305                         if err != nil {
 306                                 return 1
 307                         }
 308                 }
 309
 310                 var pgc struct {
 311                         Version       string
 312                         Cluster       string
 313                         Port          int
 314                         Status        string
 315                         Owner         string
 316                         DataDirectory string
 317                         LogFile       string
 318                 }
 319                 if pg_lsclusters, err2 := exec.Command("pg_lsclusters", "--no-header").CombinedOutput(); err2 != nil {
 320                         err = fmt.Errorf("pg_lsclusters: %s", err2)
 321                         return 1
 322                 } else if pgclusters := strings.Split(strings.TrimSpace(string(pg_lsclusters)), "\n"); len(pgclusters) != 1 {
 323                         logger.Warnf("pg_lsclusters returned %d postgresql clusters -- skipping postgresql initdb/startup, hope that's ok", len(pgclusters))
 324                 } else if _, err = fmt.Sscanf(pgclusters[0], "%s %s %d %s %s %s %s", &pgc.Version, &pgc.Cluster, &pgc.Port, &pgc.Status, &pgc.Owner, &pgc.DataDirectory, &pgc.LogFile); err != nil {
 325                         err = fmt.Errorf("error parsing pg_lsclusters output: %s", err)
 326                         return 1
 327                 } else if pgc.Status == "online" {
 328                         logger.Infof("postgresql cluster %s-%s is online", pgc.Version, pgc.Cluster)
 329                 } else {
 330                         logger.Infof("postgresql cluster %s-%s is %s; trying to start", pgc.Version, pgc.Cluster, pgc.Status)
 331                         cmd := exec.Command("pg_ctlcluster", "--foreground", pgc.Version, pgc.Cluster, "start")
 332                         cmd.Stdout = stdout
 333                         cmd.Stderr = stderr
 334                         err = cmd.Start()
 335                         if err != nil {
 336                                 return 1
 337                         }
 338                         defer func() {
 339                                 cmd.Process.Signal(syscall.SIGTERM)
 340                                 logger.Info("sent SIGTERM; waiting for postgres to shut down")
 341                                 cmd.Wait()
 342                         }()
 343                         err = waitPostgreSQLReady()
 344                         if err != nil {
 345                                 return 1
 346                         }
 347                 }
 348
 349                 if os.Getpid() == 1 {
 350                         // We are the init process (presumably in a
 351                         // docker container) so although postgresql is
 352                         // installed, it's not running, and initdb
 353                         // might never have been run.
 354                 }
 355
 356                 var needcoll []string
 357                 // If the en_US.UTF-8 locale wasn't installed when
 358                 // postgresql initdb ran, it needs to be added
 359                 // explicitly before we can use it in our test suite.
 360                 for _, collname := range []string{"en_US", "en_US.UTF-8"} {
 361                         cmd := exec.Command("sudo", "-u", "postgres", "psql", "-t", "-c", "SELECT 1 FROM pg_catalog.pg_collation WHERE collname='"+collname+"' AND collcollate IN ('en_US.UTF-8', 'en_US.utf8')")
 362                         cmd.Dir = "/"
 363                         out, err2 := cmd.CombinedOutput()
 364                         if err != nil {
 365                                 err = fmt.Errorf("error while checking postgresql collations: %s", err2)
 366                                 return 1
 367                         }
 368                         if strings.Contains(string(out), "1") {
 369                                 logger.Infof("postgresql supports collation %s", collname)
 370                         } else {
 371                                 needcoll = append(needcoll, collname)
 372                         }
 373                 }
 374                 if len(needcoll) > 0 && os.Getpid() != 1 {
 375                         // In order for the CREATE COLLATION statement
 376                         // below to work, the locale must have existed
 377                         // when PostgreSQL started up. If we're
 378                         // running as init, we must have started
 379                         // PostgreSQL ourselves after installing the
 380                         // locales. Otherwise, it might need a
 381                         // restart, so we attempt to restart it with
 382                         // systemd.
 383                         if err = runBash(`sudo systemctl restart postgresql`, stdout, stderr); err != nil {
 384                                 logger.Warn("`systemctl restart postgresql` failed; hoping postgresql does not need to be restarted")
 385                         } else if err = waitPostgreSQLReady(); err != nil {
 386                                 return 1
 387                         }
 388                 }
 389                 for _, collname := range needcoll {
 390                         cmd := exec.Command("sudo", "-u", "postgres", "psql", "-c", "CREATE COLLATION \""+collname+"\" (LOCALE = \"en_US.UTF-8\")")
 391                         cmd.Stdout = stdout
 392                         cmd.Stderr = stderr
 393                         cmd.Dir = "/"
 394                         err = cmd.Run()
 395                         if err != nil {
 396                                 err = fmt.Errorf("error adding postgresql collation %s: %s", collname, err)
 397                                 return 1
 398                         }
 399                 }
 400
 401                 withstuff := "WITH LOGIN SUPERUSER ENCRYPTED PASSWORD " + pq.QuoteLiteral(devtestDatabasePassword)
 402                 cmd := exec.Command("sudo", "-u", "postgres", "psql", "-c", "ALTER ROLE arvados "+withstuff)
 403                 cmd.Dir = "/"
 404                 if err := cmd.Run(); err == nil {
 405                         logger.Print("arvados role exists; superuser privileges added, password updated")
 406                 } else {
 407                         cmd := exec.Command("sudo", "-u", "postgres", "psql", "-c", "CREATE ROLE arvados "+withstuff)
 408                         cmd.Dir = "/"
 409                         cmd.Stdout = stdout
 410                         cmd.Stderr = stderr
 411                         err = cmd.Run()
 412                         if err != nil {
 413                                 return 1
 414                         }
 415                 }
 416         }
 417
 418         if prod || pkg {
 419                 // Install Rails apps to /var/lib/arvados/{railsapi,workbench1}/
 420                 for dstdir, srcdir := range map[string]string{
 421                         "railsapi":   "services/api",
 422                         "workbench1": "apps/workbench",
 423                 } {
 424                         fmt.Fprintf(stderr, "building %s...\n", srcdir)
 425                         cmd := exec.Command("rsync",
 426                                 "-a", "--no-owner", "--delete-after", "--delete-excluded",
 427                                 "--exclude", "/coverage",
 428                                 "--exclude", "/log",
 429                                 "--exclude", "/tmp",
 430                                 "--exclude", "/vendor",
 431                                 "./", "/var/lib/arvados/"+dstdir+"/")
 432                         cmd.Dir = filepath.Join(inst.SourcePath, srcdir)
 433                         cmd.Stdout = stdout
 434                         cmd.Stderr = stderr
 435                         err = cmd.Run()
 436                         if err != nil {
 437                                 return 1
 438                         }
 439                         for _, cmdline := range [][]string{
 440                                 {"mkdir", "-p", "log", "tmp", ".bundle", "/var/www/.gem", "/var/www/.bundle", "/var/www/.passenger"},
 441                                 {"touch", "log/production.log"},
 442                                 {"chown", "-R", "--from=root", "www-data:www-data", "/var/www/.gem", "/var/www/.bundle", "/var/www/.passenger", "log", "tmp", ".bundle", "Gemfile.lock", "config.ru", "config/environment.rb"},
 443                                 {"sudo", "-u", "www-data", "/var/lib/arvados/bin/gem", "install", "--user", "--conservative", "--no-document", "bundler:1.16.6", "bundler:1.17.3", "bundler:2.0.2"},
 444                                 {"sudo", "-u", "www-data", "/var/lib/arvados/bin/bundle", "install", "--deployment", "--jobs", "8", "--path", "/var/www/.gem"},
 445                                 {"sudo", "-u", "www-data", "/var/lib/arvados/bin/bundle", "exec", "passenger-config", "build-native-support"},
 446                                 {"sudo", "-u", "www-data", "/var/lib/arvados/bin/bundle", "exec", "passenger-config", "install-standalone-runtime"},
 447                         } {
 448                                 cmd = exec.Command(cmdline[0], cmdline[1:]...)
 449                                 cmd.Env = append([]string{}, os.Environ()...)
 450                                 cmd.Dir = "/var/lib/arvados/" + dstdir
 451                                 cmd.Stdout = stdout
 452                                 cmd.Stderr = stderr
 453                                 fmt.Fprintf(stderr, "... %s\n", cmd.Args)
 454                                 err = cmd.Run()
 455                                 if err != nil {
 456                                         return 1
 457                                 }
 458                         }
 459                         cmd = exec.Command("sudo", "-u", "www-data", "/var/lib/arvados/bin/bundle", "exec", "passenger-config", "validate-install")
 460                         cmd.Dir = "/var/lib/arvados/" + dstdir
 461                         cmd.Stdout = stdout
 462                         cmd.Stderr = stderr
 463                         err = cmd.Run()
 464                         if err != nil && !strings.Contains(err.Error(), "exit status 2") {
 465                                 // Exit code 2 indicates there were warnings (like
 466                                 // "other passenger installations have been detected",
 467                                 // which we can't expect to avoid) but no errors.
 468                                 // Other non-zero exit codes (1, 9) indicate errors.
 469                                 return 1
 470                         }
 471                 }
 472
 473                 // Install Go programs to /var/lib/arvados/bin/
 474                 for _, srcdir := range []string{
 475                         "cmd/arvados-client",
 476                         "cmd/arvados-server",
 477                         "services/arv-git-httpd",
 478                         "services/crunch-dispatch-local",
 479                         "services/crunch-dispatch-slurm",
 480                         "services/health",
 481                         "services/keep-balance",
 482                         "services/keep-web",
 483                         "services/keepproxy",
 484                         "services/keepstore",
 485                         "services/ws",
 486                 } {
 487                         fmt.Fprintf(stderr, "building %s...\n", srcdir)
 488                         cmd := exec.Command("go", "install", "-ldflags", "-X git.arvados.org/arvados.git/lib/cmd.version="+inst.PackageVersion+" -X main.version="+inst.PackageVersion)
 489                         cmd.Env = append([]string{"GOBIN=/var/lib/arvados/bin"}, os.Environ()...)
 490                         cmd.Dir = filepath.Join(inst.SourcePath, srcdir)
 491                         cmd.Stdout = stdout
 492                         cmd.Stderr = stderr
 493                         err = cmd.Run()
 494                         if err != nil {
 495                                 return 1
 496                         }
 497                 }
 498
 499                 // Copy assets from source tree to /var/lib/arvados/share
 500                 cmd := exec.Command("install", "-v", "-t", "/var/lib/arvados/share", filepath.Join(inst.SourcePath, "sdk/python/tests/nginx.conf"))
 501                 cmd.Stdout = stdout
 502                 cmd.Stderr = stderr
 503                 err = cmd.Run()
 504                 if err != nil {
 505                         return 1
 506                 }
 507         }
 508
 509         return 0
 510 }
 511
 512 type osversion struct {
 513         Debian bool
 514         Ubuntu bool
 515         Centos bool
 516         Major  int
 517 }
 518
 519 func identifyOS() (osversion, error) {
 520         var osv osversion
 521         f, err := os.Open("/etc/os-release")
 522         if err != nil {
 523                 return osv, err
 524         }
 525         defer f.Close()
 526
 527         kv := map[string]string{}
 528         scanner := bufio.NewScanner(f)
 529         for scanner.Scan() {
 530                 line := strings.TrimSpace(scanner.Text())
 531                 if strings.HasPrefix(line, "#") {
 532                         continue
 533                 }
 534                 toks := strings.SplitN(line, "=", 2)
 535                 if len(toks) != 2 {
 536                         return osv, fmt.Errorf("invalid line in /etc/os-release: %q", line)
 537                 }
 538                 k := toks[0]
 539                 v := strings.Trim(toks[1], `"`)
 540                 if v == toks[1] {
 541                         v = strings.Trim(v, `'`)
 542                 }
 543                 kv[k] = v
 544         }
 545         if err = scanner.Err(); err != nil {
 546                 return osv, err
 547         }
 548         switch kv["ID"] {
 549         case "ubuntu":
 550                 osv.Ubuntu = true
 551         case "debian":
 552                 osv.Debian = true
 553         case "centos":
 554                 osv.Centos = true
 555         default:
 556                 return osv, fmt.Errorf("unsupported ID in /etc/os-release: %q", kv["ID"])
 557         }
 558         vstr := kv["VERSION_ID"]
 559         if i := strings.Index(vstr, "."); i > 0 {
 560                 vstr = vstr[:i]
 561         }
 562         osv.Major, err = strconv.Atoi(vstr)
 563         if err != nil {
 564                 return osv, fmt.Errorf("incomprehensible VERSION_ID in /etc/os-release: %q", kv["VERSION_ID"])
 565         }
 566         return osv, nil
 567 }
 568
 569 func waitPostgreSQLReady() error {
 570         for deadline := time.Now().Add(10 * time.Second); ; {
 571                 output, err := exec.Command("pg_isready").CombinedOutput()
 572                 if err == nil {
 573                         return nil
 574                 } else if time.Now().After(deadline) {
 575                         return fmt.Errorf("timed out waiting for pg_isready (%q)", output)
 576                 } else {
 577                         time.Sleep(time.Second)
 578                 }
 579         }
 580 }
 581
 582 func runBash(script string, stdout, stderr io.Writer) error {
 583         cmd := exec.Command("bash", "-")
 584         cmd.Stdin = bytes.NewBufferString("set -ex -o pipefail\n" + script)
 585         cmd.Stdout = stdout
 586         cmd.Stderr = stderr
 587         return cmd.Run()
 588 }
 589
 590 func prodpkgs(osv osversion) []string {
 591         pkgs := []string{
 592                 "ca-certificates",
 593                 "curl",
 594                 "fuse",
 595                 "git",
 596                 "gitolite3",
 597                 "graphviz",
 598                 "haveged",
 599                 "libcurl3-gnutls",
 600                 "libxslt1.1",
 601                 "nginx",
 602                 "python",
 603                 "sudo",
 604         }
 605         if osv.Debian || osv.Ubuntu {
 606                 if osv.Debian && osv.Major == 8 {
 607                         pkgs = append(pkgs, "libgnutls-deb0-28") // sdk/cwl
 608                 } else if osv.Debian && osv.Major >= 10 || osv.Ubuntu && osv.Major >= 16 {
 609                         pkgs = append(pkgs, "python3-distutils") // sdk/cwl
 610                 }
 611                 return append(pkgs,
 612                         "g++",
 613                         "libcurl4-openssl-dev", // services/api
 614                         "libpq-dev",
 615                         "libpython2.7", // services/fuse
 616                         "mime-support", // keep-web
 617                         "zlib1g-dev",   // services/api
 618                 )
 619         } else if osv.Centos {
 620                 return append(pkgs,
 621                         "fuse-libs", // services/fuse
 622                         "gcc",
 623                         "gcc-c++",
 624                         "libcurl-devel",    // services/api
 625                         "mailcap",          // keep-web
 626                         "postgresql-devel", // services/api
 627                 )
 628         } else {
 629                 panic("os version not supported")
 630         }
 631 }
 632
 633 func ProductionDependencies() ([]string, error) {
 634         osv, err := identifyOS()
 635         if err != nil {
 636                 return nil, err
 637         }
 638         return prodpkgs(osv), nil
 639 }