package boot
import (
- "bytes"
"context"
- "crypto/rand"
- "encoding/json"
+ "errors"
"flag"
"fmt"
"io"
- "io/ioutil"
- "net"
- "os"
- "os/exec"
- "os/signal"
- "path/filepath"
- "strings"
- "sync"
- "syscall"
"time"
"git.arvados.org/arvados.git/lib/cmd"
- "git.arvados.org/arvados.git/lib/config"
- "git.arvados.org/arvados.git/lib/controller"
- "git.arvados.org/arvados.git/lib/dispatchcloud"
- "git.arvados.org/arvados.git/sdk/go/arvados"
"git.arvados.org/arvados.git/sdk/go/ctxlog"
- "github.com/sirupsen/logrus"
)
-var Command cmd.Handler = &bootCommand{}
+var Command cmd.Handler = bootCommand{}
-type bootCommand struct {
- sourcePath string // e.g., /home/username/src/arvados
- libPath string // e.g., /var/lib/arvados
- clusterType string // e.g., production
-
- stdout io.Writer
- stderr io.Writer
-
- setupRubyOnce sync.Once
- setupRubyErr error
- goMutex sync.Mutex
+type supervisedTask interface {
+ // Execute the task. Run should return nil when the task is
+ // done enough to satisfy a dependency relationship (e.g., the
+ // service is running and ready). If the task starts a
+ // goroutine that fails after Run returns (e.g., the service
+ // shuts down), it should call fail().
+ Run(ctx context.Context, fail func(error), super *Supervisor) error
+ String() string
}
-func (boot *bootCommand) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
- boot.stdout = stdout
- boot.stderr = stderr
- log := ctxlog.New(stderr, "json", "info")
-
- var err error
- defer func() {
- if err != nil {
- log.WithError(err).Info("exiting")
- }
- }()
-
- flags := flag.NewFlagSet(prog, flag.ContinueOnError)
- flags.SetOutput(stderr)
- loader := config.NewLoader(stdin, log)
- loader.SetupFlags(flags)
- versionFlag := flags.Bool("version", false, "Write version information to stdout and exit 0")
- flags.StringVar(&boot.sourcePath, "source", ".", "arvados source tree `directory`")
- flags.StringVar(&boot.libPath, "lib", "/var/lib/arvados", "`directory` to install dependencies and library files")
- flags.StringVar(&boot.clusterType, "type", "production", "cluster `type`: development, test, or production")
- err = flags.Parse(args)
- if err == flag.ErrHelp {
- err = nil
- return 0
- } else if err != nil {
- return 2
- } else if *versionFlag {
- return cmd.Version.RunCommand(prog, args, stdin, stdout, stderr)
- } else if boot.clusterType != "development" && boot.clusterType != "test" && boot.clusterType != "production" {
- err = fmt.Errorf("cluster type must be 'development', 'test', or 'production'")
- return 2
- }
-
- cwd, err := os.Getwd()
- if err != nil {
- return 1
- }
- if !strings.HasPrefix(boot.sourcePath, "/") {
- boot.sourcePath = filepath.Join(cwd, boot.sourcePath)
- }
- boot.sourcePath, err = filepath.EvalSymlinks(boot.sourcePath)
- if err != nil {
- return 1
- }
-
- loader.SkipAPICalls = true
- cfg, err := loader.Load()
- if err != nil {
- return 1
- }
-
- tempdir, err := ioutil.TempDir("", "arvados-server-boot-")
- if err != nil {
- return 1
- }
- defer os.RemoveAll(tempdir)
-
- // Fill in any missing config keys, and write the resulting
- // config in the temp dir for child services to use.
- err = boot.autofillConfig(cfg, log)
- if err != nil {
- return 1
- }
- conffile, err := os.OpenFile(filepath.Join(tempdir, "config.yml"), os.O_CREATE|os.O_WRONLY, 0777)
- if err != nil {
- return 1
- }
- defer conffile.Close()
- err = json.NewEncoder(conffile).Encode(cfg)
- if err != nil {
- return 1
- }
- err = conffile.Close()
- if err != nil {
- return 1
- }
- os.Setenv("ARVADOS_CONFIG", conffile.Name())
+var errNeedConfigReload = errors.New("config changed, restart needed")
+var errParseFlags = errors.New("error parsing command line arguments")
- os.Setenv("RAILS_ENV", boot.clusterType)
+type bootCommand struct{}
- // Now that we have the config, replace the bootstrap logger
- // with a new one according to the logging config.
- cluster, err := cfg.GetCluster("")
- if err != nil {
- return 1
- }
- log = ctxlog.New(stderr, cluster.SystemLogs.Format, cluster.SystemLogs.LogLevel)
- logger := log.WithFields(logrus.Fields{
- "PID": os.Getpid(),
- })
+func (bcmd bootCommand) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
+ logger := ctxlog.New(stderr, "json", "info")
ctx := ctxlog.Context(context.Background(), logger)
- ctx, cancel := context.WithCancel(ctx)
- defer cancel()
-
- ch := make(chan os.Signal)
- signal.Notify(ch, syscall.SIGINT)
- go func() {
- for sig := range ch {
- logger.WithField("signal", sig).Info("caught signal")
- cancel()
- }
- }()
-
- for _, dir := range []string{boot.libPath, filepath.Join(boot.libPath, "bin")} {
- if _, err = os.Stat(filepath.Join(dir, ".")); os.IsNotExist(err) {
- err = os.Mkdir(dir, 0755)
- if err != nil {
- return 1
- }
+ for {
+ err := bcmd.run(ctx, prog, args, stdin, stdout, stderr)
+ if err == errNeedConfigReload {
+ continue
+ } else if err == errParseFlags {
+ return 2
} else if err != nil {
+ logger.WithError(err).Info("exiting")
return 1
+ } else {
+ return 0
}
}
- os.Setenv("PATH", filepath.Join(boot.libPath, "bin")+":"+os.Getenv("PATH"))
-
- err = boot.installGoProgram(ctx, "cmd/arvados-server")
- if err != nil {
- return 1
- }
-
- var wg sync.WaitGroup
- for _, cmpt := range []component{
- {name: "controller", cmdArgs: []string{"-config", conffile.Name()}, cmdHandler: controller.Command},
- {name: "dispatchcloud", cmdArgs: []string{"-config", conffile.Name()}, cmdHandler: dispatchcloud.Command, notIfTest: true},
- {name: "keepproxy", goProg: "services/keepproxy"},
- {name: "railsAPI", svc: cluster.Services.RailsAPI, railsApp: "services/api"},
- } {
- cmpt := cmpt
- wg.Add(1)
- go func() {
- defer wg.Done()
- defer cancel()
- logger.WithField("component", cmpt.name).Info("starting")
- err := cmpt.Run(ctx, boot, stdout, stderr)
- if err != nil {
- logger.WithError(err).WithField("component", cmpt.name).Info("exited")
- }
- }()
- }
- <-ctx.Done()
- wg.Wait()
- return 0
-}
-
-func (boot *bootCommand) installGoProgram(ctx context.Context, srcpath string) error {
- boot.goMutex.Lock()
- defer boot.goMutex.Unlock()
- env := append([]string{"GOPATH=" + boot.libPath}, os.Environ()...)
- return boot.RunProgram(ctx, filepath.Join(boot.sourcePath, srcpath), nil, env, "go", "install")
-}
-
-func (boot *bootCommand) setupRubyEnv() error {
- boot.setupRubyOnce.Do(func() {
- buf, err := exec.Command("gem", "env", "gempath").Output() // /var/lib/arvados/.gem/ruby/2.5.0/bin:...
- if err != nil || len(buf) == 0 {
- boot.setupRubyErr = fmt.Errorf("gem env gempath: %v", err)
- }
- gempath := string(bytes.Split(buf, []byte{':'})[0])
- os.Setenv("PATH", gempath+"/bin:"+os.Getenv("PATH"))
- os.Setenv("GEM_HOME", gempath)
- os.Setenv("GEM_PATH", gempath)
- })
- return boot.setupRubyErr
}
-func (boot *bootCommand) RunProgram(ctx context.Context, dir string, output io.Writer, env []string, prog string, args ...string) error {
- cmdline := fmt.Sprintf("%s", append([]string{prog}, args...))
- fmt.Fprintf(boot.stderr, "%s executing in %s\n", cmdline, dir)
- cmd := exec.Command(prog, args...)
- if output == nil {
- cmd.Stdout = boot.stderr
- } else {
- cmd.Stdout = output
- }
- cmd.Stderr = boot.stderr
- if strings.HasPrefix(dir, "/") {
- cmd.Dir = dir
- } else {
- cmd.Dir = filepath.Join(boot.sourcePath, dir)
- }
- if env != nil {
- cmd.Env = env
- }
- go func() {
- <-ctx.Done()
- cmd.Process.Signal(syscall.SIGINT)
- for range time.Tick(5 * time.Second) {
- if cmd.ProcessState != nil {
- break
- }
- ctxlog.FromContext(ctx).WithField("process", cmd.Process).Infof("waiting for child process to exit after SIGINT")
- cmd.Process.Signal(syscall.SIGINT)
- }
- }()
- err := cmd.Run()
- if err != nil {
- return fmt.Errorf("%s: error: %v", cmdline, err)
+func (bcmd bootCommand) run(ctx context.Context, prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) error {
+ ctx, cancel := context.WithCancel(ctx)
+ defer cancel()
+ super := &Supervisor{
+ Stdin: stdin,
+ Stderr: stderr,
+ logger: ctxlog.FromContext(ctx),
}
- return nil
-}
-
-type component struct {
- name string
- svc arvados.Service
- cmdHandler cmd.Handler
- cmdArgs []string
- railsApp string // source dir in arvados tree, e.g., "services/api"
- goProg string // source dir in arvados tree, e.g., "services/keepstore"
- notIfTest bool // don't run this component on a test cluster
-}
-func (cmpt *component) Run(ctx context.Context, boot *bootCommand, stdout, stderr io.Writer) error {
- if cmpt.notIfTest && boot.clusterType == "test" {
- fmt.Fprintf(stderr, "skipping component %q\n", cmpt.name)
- <-ctx.Done()
- return nil
- }
- fmt.Fprintf(stderr, "starting component %q\n", cmpt.name)
- if cmpt.cmdHandler != nil {
- errs := make(chan error, 1)
- go func() {
- defer close(errs)
- exitcode := cmpt.cmdHandler.RunCommand(cmpt.name, cmpt.cmdArgs, bytes.NewBuffer(nil), stdout, stderr)
- if exitcode != 0 {
- errs <- fmt.Errorf("exit code %d", exitcode)
- }
- }()
- select {
- case err := <-errs:
- return err
- case <-ctx.Done():
- // cmpt.cmdHandler.RunCommand() doesn't have
- // access to our context, so it won't shut
- // down by itself. We just abandon it.
+ flags := flag.NewFlagSet(prog, flag.ContinueOnError)
+ versionFlag := flags.Bool("version", false, "Write version information to stdout and exit 0")
+ flags.StringVar(&super.ConfigPath, "config", "/etc/arvados/config.yml", "arvados config file `path`")
+ flags.StringVar(&super.SourcePath, "source", ".", "arvados source tree `directory`")
+ flags.StringVar(&super.ClusterType, "type", "production", "cluster `type`: development, test, or production")
+ flags.StringVar(&super.ListenHost, "listen-host", "localhost", "host name or interface address for external services, and internal services whose InternalURLs are not configured")
+ flags.StringVar(&super.ControllerAddr, "controller-address", ":0", "desired controller address, `host:port` or `:port`")
+ flags.StringVar(&super.Workbench2Source, "workbench2-source", "../arvados-workbench2", "path to arvados-workbench2 source tree")
+ flags.BoolVar(&super.NoWorkbench1, "no-workbench1", false, "do not run workbench1")
+ flags.BoolVar(&super.NoWorkbench2, "no-workbench2", true, "do not run workbench2")
+ flags.BoolVar(&super.OwnTemporaryDatabase, "own-temporary-database", false, "bring up a postgres server and create a temporary database")
+ timeout := flags.Duration("timeout", 0, "maximum time to wait for cluster to be ready")
+ shutdown := flags.Bool("shutdown", false, "shut down when the cluster becomes ready")
+ if ok, code := cmd.ParseFlags(flags, prog, args, "", stderr); !ok {
+ if code == 0 {
return nil
+ } else {
+ return errParseFlags
}
+ } else if *versionFlag {
+ cmd.Version.RunCommand(prog, args, stdin, stdout, stderr)
+ return nil
+ } else if super.ClusterType != "development" && super.ClusterType != "test" && super.ClusterType != "production" {
+ return fmt.Errorf("cluster type must be 'development', 'test', or 'production'")
}
- if cmpt.goProg != "" {
- return boot.RunProgram(ctx, cmpt.goProg, nil, nil, "go", "run", ".")
- }
- if cmpt.railsApp != "" {
- port := "-"
- for u := range cmpt.svc.InternalURLs {
- if _, p, err := net.SplitHostPort(u.Host); err != nil {
- return err
- } else if p != "" {
- port = p
- } else if u.Scheme == "https" {
- port = "443"
- } else {
- port = "80"
- }
- break
- }
- if port == "-" {
- return fmt.Errorf("bug: no InternalURLs for component %q: %v", cmpt.name, cmpt.svc.InternalURLs)
- }
- err := boot.setupRubyEnv()
- if err != nil {
- return err
- }
- var buf bytes.Buffer
- err = boot.RunProgram(ctx, cmpt.railsApp, &buf, nil, "gem", "list", "--details", "bundler")
- if err != nil {
- return err
- }
- for _, version := range []string{"1.11.0", "1.17.3", "2.0.2"} {
- if !strings.Contains(buf.String(), "("+version+")") {
- err = boot.RunProgram(ctx, cmpt.railsApp, nil, nil, "gem", "install", "--user", "bundler:1.11", "bundler:1.17.3", "bundler:2.0.2")
- if err != nil {
- return err
- }
- break
- }
- }
- err = boot.RunProgram(ctx, cmpt.railsApp, nil, nil, "bundle", "install", "--jobs", "4", "--path", filepath.Join(os.Getenv("HOME"), ".gem"))
- if err != nil {
- return err
- }
- err = boot.RunProgram(ctx, cmpt.railsApp, nil, nil, "bundle", "exec", "passenger-config", "build-native-support")
- if err != nil {
- return err
- }
- err = boot.RunProgram(ctx, cmpt.railsApp, nil, nil, "bundle", "exec", "passenger-config", "install-standalone-runtime")
- if err != nil {
- return err
- }
- err = boot.RunProgram(ctx, cmpt.railsApp, nil, nil, "bundle", "exec", "passenger-config", "validate-install")
- if err != nil {
- return err
- }
- err = boot.RunProgram(ctx, cmpt.railsApp, nil, nil, "bundle", "exec", "passenger", "start", "-p", port)
- if err != nil {
- return err
- }
- }
- return fmt.Errorf("bug: component %q has nothing to run", cmpt.name)
-}
+ super.Start(ctx)
+ defer super.Stop()
-func (boot *bootCommand) autofillConfig(cfg *arvados.Config, log logrus.FieldLogger) error {
- cluster, err := cfg.GetCluster("")
- if err != nil {
- return err
- }
- port := 9000
- for _, svc := range []*arvados.Service{
- &cluster.Services.Controller,
- &cluster.Services.DispatchCloud,
- &cluster.Services.RailsAPI,
- } {
- if len(svc.InternalURLs) == 0 {
- port++
- svc.InternalURLs = map[arvados.URL]arvados.ServiceInstance{
- arvados.URL{Scheme: "http", Host: fmt.Sprintf("localhost:%d", port)}: arvados.ServiceInstance{},
- }
- }
- }
- if cluster.Services.Controller.ExternalURL.Host == "" {
- for k := range cluster.Services.Controller.InternalURLs {
- cluster.Services.Controller.ExternalURL = k
- }
- }
- if cluster.SystemRootToken == "" {
- cluster.SystemRootToken = randomHexString(64)
- }
- if cluster.API.RailsSessionSecretToken == "" {
- cluster.API.RailsSessionSecretToken = randomHexString(64)
- }
- if cluster.Collections.BlobSigningKey == "" {
- cluster.Collections.BlobSigningKey = randomHexString(64)
- }
- if boot.clusterType != "production" && cluster.Containers.DispatchPrivateKey == "" {
- buf, err := ioutil.ReadFile(filepath.Join(boot.sourcePath, "lib", "dispatchcloud", "test", "sshkey_dispatch"))
- if err != nil {
- return err
- }
- cluster.Containers.DispatchPrivateKey = string(buf)
+ var timer *time.Timer
+ if *timeout > 0 {
+ timer = time.AfterFunc(*timeout, super.Stop)
}
- cfg.Clusters[cluster.ClusterID] = *cluster
- return nil
-}
-func randomHexString(chars int) string {
- b := make([]byte, chars/2)
- _, err := rand.Read(b)
- if err != nil {
- panic(err)
+ ok := super.WaitReady()
+ if timer != nil && !timer.Stop() {
+ return errors.New("boot timed out")
+ } else if !ok {
+ super.logger.Error("boot failed")
+ } else {
+ // Write each cluster's controller URL to stdout.
+ // Nothing else goes to stdout, so this allows a
+ // calling script to determine when the cluster is
+ // ready to use, and the controller's host:port (which
+ // may have been dynamically assigned depending on
+ // config/options).
+ for _, cc := range super.Clusters() {
+ fmt.Fprintln(stdout, cc.Services.Controller.ExternalURL)
+ }
+ if *shutdown {
+ super.Stop()
+ // Wait for children to exit. Don't report the
+ // ensuing "context cancelled" error, though:
+ // return nil to indicate successful startup.
+ _ = super.Wait()
+ fmt.Fprintln(stderr, "PASS - all services booted successfully")
+ return nil
+ }
}
- return fmt.Sprintf("%x", b)
+ // Wait for signal/crash + orderly shutdown
+ return super.Wait()
}
projects / arvados.git / blobdiff