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         EatMyData      bool
  38 }
  39
  40 func (inst *installCommand) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
  41         logger := ctxlog.New(stderr, "text", "info")
  42         ctx := ctxlog.Context(context.Background(), logger)
  43         ctx, cancel := context.WithCancel(ctx)
  44         defer cancel()
  45
  46         var err error
  47         defer func() {
  48                 if err != nil {
  49                         logger.WithError(err).Info("exiting")
  50                 }
  51         }()
  52
  53         flags := flag.NewFlagSet(prog, flag.ContinueOnError)
  54         flags.SetOutput(stderr)
  55         versionFlag := flags.Bool("version", false, "Write version information to stdout and exit 0")
  56         flags.StringVar(&inst.ClusterType, "type", "production", "cluster `type`: development, test, production, or package")
  57         flags.StringVar(&inst.SourcePath, "source", "/arvados", "source tree location (required for -type=package)")
  58         flags.StringVar(&inst.PackageVersion, "package-version", "0.0.0", "version string to embed in executable files")
  59         flags.BoolVar(&inst.EatMyData, "eatmydata", false, "use eatmydata to speed up install")
  60         err = flags.Parse(args)
  61         if err == flag.ErrHelp {
  62                 err = nil
  63                 return 0
  64         } else if err != nil {
  65                 return 2
  66         } else if *versionFlag {
  67                 return cmd.Version.RunCommand(prog, args, stdin, stdout, stderr)
  68         } else if len(flags.Args()) > 0 {
  69                 err = fmt.Errorf("unrecognized command line arguments: %v", flags.Args())
  70                 return 2
  71         }
  72
  73         var dev, test, prod, pkg bool
  74         switch inst.ClusterType {
  75         case "development":
  76                 dev = true
  77         case "test":
  78                 test = true
  79         case "production":
  80                 prod = true
  81         case "package":
  82                 pkg = true
  83         default:
  84                 err = fmt.Errorf("invalid cluster type %q (must be 'development', 'test', 'production', or 'package')", inst.ClusterType)
  85                 return 2
  86         }
  87
  88         if prod {
  89                 err = errors.New("production install is not yet implemented")
  90                 return 1
  91         }
  92
  93         osv, err := identifyOS()
  94         if err != nil {
  95                 return 1
  96         }
  97
  98         listdir, err := os.Open("/var/lib/apt/lists")
  99         if err != nil {
 100                 logger.Warnf("error while checking whether to run apt-get update: %s", err)
 101         } else if names, _ := listdir.Readdirnames(1); len(names) == 0 {
 102                 // Special case for a base docker image where the
 103                 // package cache has been deleted and all "apt-get
 104                 // install" commands will fail unless we fetch repos.
 105                 cmd := exec.CommandContext(ctx, "apt-get", "update")
 106                 cmd.Stdout = stdout
 107                 cmd.Stderr = stderr
 108                 err = cmd.Run()
 109                 if err != nil {
 110                         return 1
 111                 }
 112         }
 113
 114         if inst.EatMyData {
 115                 cmd := exec.CommandContext(ctx, "apt-get", "install", "--yes", "--no-install-recommends", "eatmydata")
 116                 cmd.Env = append(os.Environ(), "DEBIAN_FRONTEND=noninteractive")
 117                 cmd.Stdout = stdout
 118                 cmd.Stderr = stderr
 119                 err = cmd.Run()
 120                 if err != nil {
 121                         return 1
 122                 }
 123         }
 124
 125         pkgs := prodpkgs(osv)
 126
 127         if pkg {
 128                 pkgs = append(pkgs,
 129                         "dpkg-dev",
 130                         "eatmydata", // install it for later steps, even if we're not using it now
 131                         "rsync",
 132                 )
 133         }
 134
 135         if dev || test || pkg {
 136                 pkgs = append(pkgs,
 137                         "automake",
 138                         "bison",
 139                         "bsdmainutils",
 140                         "build-essential",
 141                         "cadaver",
 142                         "curl",
 143                         "cython3",
 144                         "daemontools", // lib/boot uses setuidgid to drop privileges when running as root
 145                         "default-jdk-headless",
 146                         "default-jre-headless",
 147                         "gettext",
 148                         "iceweasel",
 149                         "libattr1-dev",
 150                         "libcrypt-ssleay-perl",
 151                         "libfuse-dev",
 152                         "libgnutls28-dev",
 153                         "libjson-perl",
 154                         "libpam-dev",
 155                         "libpcre3-dev",
 156                         "libpq-dev",
 157                         "libreadline-dev",
 158                         "libssl-dev",
 159                         "libwww-perl",
 160                         "libxml2-dev",
 161                         "libxslt1-dev",
 162                         "linkchecker",
 163                         "lsof",
 164                         "make",
 165                         "net-tools",
 166                         "pandoc",
 167                         "perl-modules",
 168                         "pkg-config",
 169                         "postgresql",
 170                         "postgresql-contrib",
 171                         "python3-dev",
 172                         "python3-venv",
 173                         "python3-virtualenv",
 174                         "r-base",
 175                         "r-cran-testthat",
 176                         "r-cran-devtools",
 177                         "r-cran-knitr",
 178                         "r-cran-markdown",
 179                         "r-cran-roxygen2",
 180                         "r-cran-xml",
 181                         "sudo",
 182                         "wget",
 183                         "xvfb",
 184                 )
 185                 switch {
 186                 case osv.Debian && osv.Major >= 10:
 187                         pkgs = append(pkgs, "libcurl4")
 188                 default:
 189                         pkgs = append(pkgs, "libcurl3")
 190                 }
 191                 cmd := exec.CommandContext(ctx, "apt-get")
 192                 if inst.EatMyData {
 193                         cmd = exec.CommandContext(ctx, "eatmydata", "apt-get")
 194                 }
 195                 cmd.Args = append(cmd.Args, "install", "--yes", "--no-install-recommends")
 196                 cmd.Args = append(cmd.Args, pkgs...)
 197                 cmd.Env = append(os.Environ(), "DEBIAN_FRONTEND=noninteractive")
 198                 cmd.Stdout = stdout
 199                 cmd.Stderr = stderr
 200                 err = cmd.Run()
 201                 if err != nil {
 202                         return 1
 203                 }
 204         }
 205
 206         os.Mkdir("/var/lib/arvados", 0755)
 207         os.Mkdir("/var/lib/arvados/tmp", 0700)
 208         if prod || pkg {
 209                 os.Mkdir("/var/lib/arvados/wwwtmp", 0700)
 210                 u, er := user.Lookup("www-data")
 211                 if er != nil {
 212                         err = fmt.Errorf("user.Lookup(%q): %w", "www-data", er)
 213                         return 1
 214                 }
 215                 uid, _ := strconv.Atoi(u.Uid)
 216                 gid, _ := strconv.Atoi(u.Gid)
 217                 err = os.Chown("/var/lib/arvados/wwwtmp", uid, gid)
 218                 if err != nil {
 219                         return 1
 220                 }
 221         }
 222         rubyversion := "2.5.7"
 223         if haverubyversion, err := exec.Command("/var/lib/arvados/bin/ruby", "-v").CombinedOutput(); err == nil && bytes.HasPrefix(haverubyversion, []byte("ruby "+rubyversion)) {
 224                 logger.Print("ruby " + rubyversion + " already installed")
 225         } else {
 226                 err = inst.runBash(`
 227 tmp=/var/lib/arvados/tmp/ruby-`+rubyversion+`
 228 trap "rm -r ${tmp}" ERR
 229 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 -
 230 cd ${tmp}
 231 ./configure --disable-install-static-library --enable-shared --disable-install-doc --prefix /var/lib/arvados
 232 make -j8
 233 make install
 234 /var/lib/arvados/bin/gem install bundler --no-ri --no-rdoc
 235 # "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
 236 /var/lib/arvados/bin/gem update --system --no-ri --no-rdoc
 237 rm -r ${tmp}
 238 `, stdout, stderr)
 239                 if err != nil {
 240                         return 1
 241                 }
 242         }
 243
 244         if !prod {
 245                 goversion := "1.14"
 246                 if havegoversion, err := exec.Command("/usr/local/bin/go", "version").CombinedOutput(); err == nil && bytes.HasPrefix(havegoversion, []byte("go version go"+goversion+" ")) {
 247                         logger.Print("go " + goversion + " already installed")
 248                 } else {
 249                         err = inst.runBash(`
 250 cd /tmp
 251 wget --progress=dot:giga -O- https://storage.googleapis.com/golang/go`+goversion+`.linux-amd64.tar.gz | tar -C /var/lib/arvados -xzf -
 252 ln -sf /var/lib/arvados/go/bin/* /usr/local/bin/
 253 `, stdout, stderr)
 254                         if err != nil {
 255                                 return 1
 256                         }
 257                 }
 258         }
 259
 260         if !prod && !pkg {
 261                 pjsversion := "1.9.8"
 262                 if havepjsversion, err := exec.Command("/usr/local/bin/phantomjs", "--version").CombinedOutput(); err == nil && string(havepjsversion) == "1.9.8\n" {
 263                         logger.Print("phantomjs " + pjsversion + " already installed")
 264                 } else {
 265                         err = inst.runBash(`
 266 PJS=phantomjs-`+pjsversion+`-linux-x86_64
 267 wget --progress=dot:giga -O- https://bitbucket.org/ariya/phantomjs/downloads/$PJS.tar.bz2 | tar -C /var/lib/arvados -xjf -
 268 ln -sf /var/lib/arvados/$PJS/bin/phantomjs /usr/local/bin/
 269 `, stdout, stderr)
 270                         if err != nil {
 271                                 return 1
 272                         }
 273                 }
 274
 275                 geckoversion := "0.24.0"
 276                 if havegeckoversion, err := exec.Command("/usr/local/bin/geckodriver", "--version").CombinedOutput(); err == nil && strings.Contains(string(havegeckoversion), " "+geckoversion+" ") {
 277                         logger.Print("geckodriver " + geckoversion + " already installed")
 278                 } else {
 279                         err = inst.runBash(`
 280 GD=v`+geckoversion+`
 281 wget --progress=dot:giga -O- https://github.com/mozilla/geckodriver/releases/download/$GD/geckodriver-$GD-linux64.tar.gz | tar -C /var/lib/arvados/bin -xzf - geckodriver
 282 ln -sf /var/lib/arvados/bin/geckodriver /usr/local/bin/
 283 `, stdout, stderr)
 284                         if err != nil {
 285                                 return 1
 286                         }
 287                 }
 288
 289                 nodejsversion := "v8.15.1"
 290                 if havenodejsversion, err := exec.Command("/usr/local/bin/node", "--version").CombinedOutput(); err == nil && string(havenodejsversion) == nodejsversion+"\n" {
 291                         logger.Print("nodejs " + nodejsversion + " already installed")
 292                 } else {
 293                         err = inst.runBash(`
 294 NJS=`+nodejsversion+`
 295 wget --progress=dot:giga -O- https://nodejs.org/dist/${NJS}/node-${NJS}-linux-x64.tar.xz | sudo tar -C /var/lib/arvados -xJf -
 296 ln -sf /var/lib/arvados/node-${NJS}-linux-x64/bin/{node,npm} /usr/local/bin/
 297 `, stdout, stderr)
 298                         if err != nil {
 299                                 return 1
 300                         }
 301                 }
 302
 303                 gradleversion := "5.3.1"
 304                 if havegradleversion, err := exec.Command("/usr/local/bin/gradle", "--version").CombinedOutput(); err == nil && strings.Contains(string(havegradleversion), "Gradle "+gradleversion+"\n") {
 305                         logger.Print("gradle " + gradleversion + " already installed")
 306                 } else {
 307                         err = inst.runBash(`
 308 G=`+gradleversion+`
 309 zip=/var/lib/arvados/tmp/gradle-${G}-bin.zip
 310 trap "rm ${zip}" ERR
 311 wget --progress=dot:giga -O${zip} https://services.gradle.org/distributions/gradle-${G}-bin.zip
 312 unzip -o -d /var/lib/arvados ${zip}
 313 ln -sf /var/lib/arvados/gradle-${G}/bin/gradle /usr/local/bin/
 314 rm ${zip}
 315 `, stdout, stderr)
 316                         if err != nil {
 317                                 return 1
 318                         }
 319                 }
 320
 321                 // The entry in /etc/locale.gen is "en_US.UTF-8"; once
 322                 // it's installed, locale -a reports it as
 323                 // "en_US.utf8".
 324                 wantlocale := "en_US.UTF-8"
 325                 if havelocales, err := exec.Command("locale", "-a").CombinedOutput(); err == nil && bytes.Contains(havelocales, []byte(strings.Replace(wantlocale+"\n", "UTF-", "utf", 1))) {
 326                         logger.Print("locale " + wantlocale + " already installed")
 327                 } else {
 328                         err = inst.runBash(`sed -i 's/^# *\(`+wantlocale+`\)/\1/' /etc/locale.gen && locale-gen`, stdout, stderr)
 329                         if err != nil {
 330                                 return 1
 331                         }
 332                 }
 333
 334                 var pgc struct {
 335                         Version       string
 336                         Cluster       string
 337                         Port          int
 338                         Status        string
 339                         Owner         string
 340                         DataDirectory string
 341                         LogFile       string
 342                 }
 343                 if pgLsclusters, err2 := exec.Command("pg_lsclusters", "--no-header").CombinedOutput(); err2 != nil {
 344                         err = fmt.Errorf("pg_lsclusters: %s", err2)
 345                         return 1
 346                 } else if pgclusters := strings.Split(strings.TrimSpace(string(pgLsclusters)), "\n"); len(pgclusters) != 1 {
 347                         logger.Warnf("pg_lsclusters returned %d postgresql clusters -- skipping postgresql initdb/startup, hope that's ok", len(pgclusters))
 348                 } 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 {
 349                         err = fmt.Errorf("error parsing pg_lsclusters output: %s", err)
 350                         return 1
 351                 } else if pgc.Status == "online" {
 352                         logger.Infof("postgresql cluster %s-%s is online", pgc.Version, pgc.Cluster)
 353                 } else {
 354                         logger.Infof("postgresql cluster %s-%s is %s; trying to start", pgc.Version, pgc.Cluster, pgc.Status)
 355                         cmd := exec.Command("pg_ctlcluster", "--foreground", pgc.Version, pgc.Cluster, "start")
 356                         cmd.Stdout = stdout
 357                         cmd.Stderr = stderr
 358                         err = cmd.Start()
 359                         if err != nil {
 360                                 return 1
 361                         }
 362                         defer func() {
 363                                 cmd.Process.Signal(syscall.SIGTERM)
 364                                 logger.Info("sent SIGTERM; waiting for postgres to shut down")
 365                                 cmd.Wait()
 366                         }()
 367                         err = waitPostgreSQLReady()
 368                         if err != nil {
 369                                 return 1
 370                         }
 371                 }
 372
 373                 if os.Getpid() == 1 {
 374                         // We are the init process (presumably in a
 375                         // docker container) so although postgresql is
 376                         // installed, it's not running, and initdb
 377                         // might never have been run.
 378                 }
 379
 380                 var needcoll []string
 381                 // If the en_US.UTF-8 locale wasn't installed when
 382                 // postgresql initdb ran, it needs to be added
 383                 // explicitly before we can use it in our test suite.
 384                 for _, collname := range []string{"en_US", "en_US.UTF-8"} {
 385                         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')")
 386                         cmd.Dir = "/"
 387                         out, err2 := cmd.CombinedOutput()
 388                         if err != nil {
 389                                 err = fmt.Errorf("error while checking postgresql collations: %s", err2)
 390                                 return 1
 391                         }
 392                         if strings.Contains(string(out), "1") {
 393                                 logger.Infof("postgresql supports collation %s", collname)
 394                         } else {
 395                                 needcoll = append(needcoll, collname)
 396                         }
 397                 }
 398                 if len(needcoll) > 0 && os.Getpid() != 1 {
 399                         // In order for the CREATE COLLATION statement
 400                         // below to work, the locale must have existed
 401                         // when PostgreSQL started up. If we're
 402                         // running as init, we must have started
 403                         // PostgreSQL ourselves after installing the
 404                         // locales. Otherwise, it might need a
 405                         // restart, so we attempt to restart it with
 406                         // systemd.
 407                         if err = inst.runBash(`sudo systemctl restart postgresql`, stdout, stderr); err != nil {
 408                                 logger.Warn("`systemctl restart postgresql` failed; hoping postgresql does not need to be restarted")
 409                         } else if err = waitPostgreSQLReady(); err != nil {
 410                                 return 1
 411                         }
 412                 }
 413                 for _, collname := range needcoll {
 414                         cmd := exec.Command("sudo", "-u", "postgres", "psql", "-c", "CREATE COLLATION \""+collname+"\" (LOCALE = \"en_US.UTF-8\")")
 415                         cmd.Stdout = stdout
 416                         cmd.Stderr = stderr
 417                         cmd.Dir = "/"
 418                         err = cmd.Run()
 419                         if err != nil {
 420                                 err = fmt.Errorf("error adding postgresql collation %s: %s", collname, err)
 421                                 return 1
 422                         }
 423                 }
 424
 425                 withstuff := "WITH LOGIN SUPERUSER ENCRYPTED PASSWORD " + pq.QuoteLiteral(devtestDatabasePassword)
 426                 cmd := exec.Command("sudo", "-u", "postgres", "psql", "-c", "ALTER ROLE arvados "+withstuff)
 427                 cmd.Dir = "/"
 428                 if err := cmd.Run(); err == nil {
 429                         logger.Print("arvados role exists; superuser privileges added, password updated")
 430                 } else {
 431                         cmd := exec.Command("sudo", "-u", "postgres", "psql", "-c", "CREATE ROLE arvados "+withstuff)
 432                         cmd.Dir = "/"
 433                         cmd.Stdout = stdout
 434                         cmd.Stderr = stderr
 435                         err = cmd.Run()
 436                         if err != nil {
 437                                 return 1
 438                         }
 439                 }
 440         }
 441
 442         if prod || pkg {
 443                 // Install Rails apps to /var/lib/arvados/{railsapi,workbench1}/
 444                 for dstdir, srcdir := range map[string]string{
 445                         "railsapi":   "services/api",
 446                         "workbench1": "apps/workbench",
 447                 } {
 448                         fmt.Fprintf(stderr, "building %s...\n", srcdir)
 449                         cmd := exec.Command("rsync",
 450                                 "-a", "--no-owner", "--delete-after", "--delete-excluded",
 451                                 "--exclude", "/coverage",
 452                                 "--exclude", "/log",
 453                                 "--exclude", "/tmp",
 454                                 "--exclude", "/vendor",
 455                                 "./", "/var/lib/arvados/"+dstdir+"/")
 456                         cmd.Dir = filepath.Join(inst.SourcePath, srcdir)
 457                         cmd.Stdout = stdout
 458                         cmd.Stderr = stderr
 459                         err = cmd.Run()
 460                         if err != nil {
 461                                 return 1
 462                         }
 463                         for _, cmdline := range [][]string{
 464                                 {"mkdir", "-p", "log", "tmp", ".bundle", "/var/www/.gem", "/var/www/.bundle", "/var/www/.passenger"},
 465                                 {"touch", "log/production.log"},
 466                                 {"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"},
 467                                 {"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"},
 468                                 {"sudo", "-u", "www-data", "/var/lib/arvados/bin/bundle", "install", "--deployment", "--jobs", "8", "--path", "/var/www/.gem"},
 469                                 {"sudo", "-u", "www-data", "/var/lib/arvados/bin/bundle", "exec", "passenger-config", "build-native-support"},
 470                                 {"sudo", "-u", "www-data", "/var/lib/arvados/bin/bundle", "exec", "passenger-config", "install-standalone-runtime"},
 471                         } {
 472                                 cmd = exec.Command(cmdline[0], cmdline[1:]...)
 473                                 cmd.Env = append([]string{}, os.Environ()...)
 474                                 cmd.Dir = "/var/lib/arvados/" + dstdir
 475                                 cmd.Stdout = stdout
 476                                 cmd.Stderr = stderr
 477                                 fmt.Fprintf(stderr, "... %s\n", cmd.Args)
 478                                 err = cmd.Run()
 479                                 if err != nil {
 480                                         return 1
 481                                 }
 482                         }
 483                         cmd = exec.Command("sudo", "-u", "www-data", "/var/lib/arvados/bin/bundle", "exec", "passenger-config", "validate-install")
 484                         cmd.Dir = "/var/lib/arvados/" + dstdir
 485                         cmd.Stdout = stdout
 486                         cmd.Stderr = stderr
 487                         err = cmd.Run()
 488                         if err != nil && !strings.Contains(err.Error(), "exit status 2") {
 489                                 // Exit code 2 indicates there were warnings (like
 490                                 // "other passenger installations have been detected",
 491                                 // which we can't expect to avoid) but no errors.
 492                                 // Other non-zero exit codes (1, 9) indicate errors.
 493                                 return 1
 494                         }
 495                 }
 496
 497                 // Install Go programs to /var/lib/arvados/bin/
 498                 for _, srcdir := range []string{
 499                         "cmd/arvados-client",
 500                         "cmd/arvados-server",
 501                         "services/arv-git-httpd",
 502                         "services/crunch-dispatch-local",
 503                         "services/crunch-dispatch-slurm",
 504                         "services/health",
 505                         "services/keep-balance",
 506                         "services/keep-web",
 507                         "services/keepproxy",
 508                         "services/keepstore",
 509                         "services/ws",
 510                 } {
 511                         fmt.Fprintf(stderr, "building %s...\n", srcdir)
 512                         cmd := exec.Command("go", "install", "-ldflags", "-X git.arvados.org/arvados.git/lib/cmd.version="+inst.PackageVersion+" -X main.version="+inst.PackageVersion)
 513                         cmd.Env = append([]string{"GOBIN=/var/lib/arvados/bin"}, os.Environ()...)
 514                         cmd.Dir = filepath.Join(inst.SourcePath, srcdir)
 515                         cmd.Stdout = stdout
 516                         cmd.Stderr = stderr
 517                         err = cmd.Run()
 518                         if err != nil {
 519                                 return 1
 520                         }
 521                 }
 522
 523                 // Copy assets from source tree to /var/lib/arvados/share
 524                 cmd := exec.Command("install", "-v", "-t", "/var/lib/arvados/share", filepath.Join(inst.SourcePath, "sdk/python/tests/nginx.conf"))
 525                 cmd.Stdout = stdout
 526                 cmd.Stderr = stderr
 527                 err = cmd.Run()
 528                 if err != nil {
 529                         return 1
 530                 }
 531         }
 532
 533         return 0
 534 }
 535
 536 type osversion struct {
 537         Debian bool
 538         Ubuntu bool
 539         Centos bool
 540         Major  int
 541 }
 542
 543 func identifyOS() (osversion, error) {
 544         var osv osversion
 545         f, err := os.Open("/etc/os-release")
 546         if err != nil {
 547                 return osv, err
 548         }
 549         defer f.Close()
 550
 551         kv := map[string]string{}
 552         scanner := bufio.NewScanner(f)
 553         for scanner.Scan() {
 554                 line := strings.TrimSpace(scanner.Text())
 555                 if strings.HasPrefix(line, "#") {
 556                         continue
 557                 }
 558                 toks := strings.SplitN(line, "=", 2)
 559                 if len(toks) != 2 {
 560                         return osv, fmt.Errorf("invalid line in /etc/os-release: %q", line)
 561                 }
 562                 k := toks[0]
 563                 v := strings.Trim(toks[1], `"`)
 564                 if v == toks[1] {
 565                         v = strings.Trim(v, `'`)
 566                 }
 567                 kv[k] = v
 568         }
 569         if err = scanner.Err(); err != nil {
 570                 return osv, err
 571         }
 572         switch kv["ID"] {
 573         case "ubuntu":
 574                 osv.Ubuntu = true
 575         case "debian":
 576                 osv.Debian = true
 577         case "centos":
 578                 osv.Centos = true
 579         default:
 580                 return osv, fmt.Errorf("unsupported ID in /etc/os-release: %q", kv["ID"])
 581         }
 582         vstr := kv["VERSION_ID"]
 583         if i := strings.Index(vstr, "."); i > 0 {
 584                 vstr = vstr[:i]
 585         }
 586         osv.Major, err = strconv.Atoi(vstr)
 587         if err != nil {
 588                 return osv, fmt.Errorf("incomprehensible VERSION_ID in /etc/os-release: %q", kv["VERSION_ID"])
 589         }
 590         return osv, nil
 591 }
 592
 593 func waitPostgreSQLReady() error {
 594         for deadline := time.Now().Add(10 * time.Second); ; {
 595                 output, err := exec.Command("pg_isready").CombinedOutput()
 596                 if err == nil {
 597                         return nil
 598                 } else if time.Now().After(deadline) {
 599                         return fmt.Errorf("timed out waiting for pg_isready (%q)", output)
 600                 } else {
 601                         time.Sleep(time.Second)
 602                 }
 603         }
 604 }
 605
 606 func (inst *installCommand) runBash(script string, stdout, stderr io.Writer) error {
 607         cmd := exec.Command("bash", "-")
 608         if inst.EatMyData {
 609                 cmd = exec.Command("eatmydata", "bash", "-")
 610         }
 611         cmd.Stdin = bytes.NewBufferString("set -ex -o pipefail\n" + script)
 612         cmd.Stdout = stdout
 613         cmd.Stderr = stderr
 614         return cmd.Run()
 615 }
 616
 617 func prodpkgs(osv osversion) []string {
 618         pkgs := []string{
 619                 "ca-certificates",
 620                 "curl",
 621                 "fuse",
 622                 "git",
 623                 "gitolite3",
 624                 "graphviz",
 625                 "haveged",
 626                 "libcurl3-gnutls",
 627                 "libxslt1.1",
 628                 "nginx",
 629                 "python",
 630                 "sudo",
 631         }
 632         if osv.Debian || osv.Ubuntu {
 633                 if osv.Debian && osv.Major == 8 {
 634                         pkgs = append(pkgs, "libgnutls-deb0-28") // sdk/cwl
 635                 } else if osv.Debian && osv.Major >= 10 || osv.Ubuntu && osv.Major >= 16 {
 636                         pkgs = append(pkgs, "python3-distutils") // sdk/cwl
 637                 }
 638                 return append(pkgs,
 639                         "g++",
 640                         "libcurl4-openssl-dev", // services/api
 641                         "libpq-dev",
 642                         "libpython2.7", // services/fuse
 643                         "mime-support", // keep-web
 644                         "zlib1g-dev",   // services/api
 645                 )
 646         } else if osv.Centos {
 647                 return append(pkgs,
 648                         "fuse-libs", // services/fuse
 649                         "gcc",
 650                         "gcc-c++",
 651                         "libcurl-devel",    // services/api
 652                         "mailcap",          // keep-web
 653                         "postgresql-devel", // services/api
 654                 )
 655         } else {
 656                 panic("os version not supported")
 657         }
 658 }
 659
 660 func ProductionDependencies() ([]string, error) {
 661         osv, err := identifyOS()
 662         if err != nil {
 663                 return nil, err
 664         }
 665         return prodpkgs(osv), nil
 666 }