"io"
"io/ioutil"
"net"
+ "net/url"
"os"
"os/exec"
"os/signal"
"os/user"
"path/filepath"
+ "reflect"
"strings"
"sync"
"syscall"
"time"
+ "git.arvados.org/arvados.git/lib/config"
"git.arvados.org/arvados.git/lib/service"
"git.arvados.org/arvados.git/sdk/go/arvados"
"git.arvados.org/arvados.git/sdk/go/ctxlog"
"git.arvados.org/arvados.git/sdk/go/health"
+ "github.com/fsnotify/fsnotify"
"github.com/sirupsen/logrus"
)
ctx context.Context
cancel context.CancelFunc
- done chan struct{}
+ done chan struct{} // closed when child procs/services have shut down
+ err error // error that caused shutdown (valid when done is closed)
healthChecker *health.Aggregator
tasksReady map[string]chan bool
waitShutdown sync.WaitGroup
+ bindir string
tempdir string
+ wwwtempdir string
configfile string
environ []string // for child processes
}
-func (super *Supervisor) Start(ctx context.Context, cfg *arvados.Config) {
+func (super *Supervisor) Start(ctx context.Context, cfg *arvados.Config, cfgPath string) {
super.ctx, super.cancel = context.WithCancel(ctx)
super.done = make(chan struct{})
go func() {
+ defer close(super.done)
+
sigch := make(chan os.Signal)
signal.Notify(sigch, syscall.SIGINT, syscall.SIGTERM)
defer signal.Stop(sigch)
go func() {
for sig := range sigch {
super.logger.WithField("signal", sig).Info("caught signal")
+ if super.err == nil {
+ super.err = fmt.Errorf("caught signal %s", sig)
+ }
super.cancel()
}
}()
+ hupch := make(chan os.Signal)
+ signal.Notify(hupch, syscall.SIGHUP)
+ defer signal.Stop(hupch)
+ go func() {
+ for sig := range hupch {
+ super.logger.WithField("signal", sig).Info("caught signal")
+ if super.err == nil {
+ super.err = errNeedConfigReload
+ }
+ super.cancel()
+ }
+ }()
+
+ if cfgPath != "" && cfgPath != "-" && cfg.AutoReloadConfig {
+ go watchConfig(super.ctx, super.logger, cfgPath, copyConfig(cfg), func() {
+ if super.err == nil {
+ super.err = errNeedConfigReload
+ }
+ super.cancel()
+ })
+ }
+
err := super.run(cfg)
if err != nil {
super.logger.WithError(err).Warn("supervisor shut down")
+ if super.err == nil {
+ super.err = err
+ }
}
- close(super.done)
}()
}
+func (super *Supervisor) Wait() error {
+ <-super.done
+ return super.err
+}
+
func (super *Supervisor) run(cfg *arvados.Config) error {
+ defer super.cancel()
+
cwd, err := os.Getwd()
if err != nil {
return err
return err
}
- super.tempdir, err = ioutil.TempDir("", "arvados-server-boot-")
- if err != nil {
- return err
- }
- defer os.RemoveAll(super.tempdir)
- if err := os.Mkdir(filepath.Join(super.tempdir, "bin"), 0755); err != nil {
- return err
+ // Choose bin and temp dirs: /var/lib/arvados/... in
+ // production, transient tempdir otherwise.
+ if super.ClusterType == "production" {
+ // These dirs have already been created by
+ // "arvados-server install" (or by extracting a
+ // package).
+ super.tempdir = "/var/lib/arvados/tmp"
+ super.wwwtempdir = "/var/lib/arvados/wwwtmp"
+ super.bindir = "/var/lib/arvados/bin"
+ } else {
+ super.tempdir, err = ioutil.TempDir("", "arvados-server-boot-")
+ if err != nil {
+ return err
+ }
+ defer os.RemoveAll(super.tempdir)
+ super.wwwtempdir = super.tempdir
+ super.bindir = filepath.Join(super.tempdir, "bin")
+ if err := os.Mkdir(super.bindir, 0755); err != nil {
+ return err
+ }
}
// Fill in any missing config keys, and write the resulting
super.setEnv("ARVADOS_CONFIG", super.configfile)
super.setEnv("RAILS_ENV", super.ClusterType)
super.setEnv("TMPDIR", super.tempdir)
- super.prependEnv("PATH", super.tempdir+"/bin:/var/lib/arvados/bin:")
+ super.prependEnv("PATH", "/var/lib/arvados/bin:")
+ if super.ClusterType != "production" {
+ super.prependEnv("PATH", super.tempdir+"/bin:")
+ }
super.cluster, err = cfg.GetCluster("")
if err != nil {
"PID": os.Getpid(),
})
- if super.SourceVersion == "" {
+ if super.SourceVersion == "" && super.ClusterType == "production" {
+ // don't need SourceVersion
+ } else if super.SourceVersion == "" {
// Find current source tree version.
var buf bytes.Buffer
err = super.RunProgram(super.ctx, ".", &buf, nil, "git", "diff", "--shortstat")
runGoProgram{src: "services/keepproxy", svc: super.cluster.Services.Keepproxy, depends: []supervisedTask{runPassenger{src: "services/api"}}},
runGoProgram{src: "services/keepstore", svc: super.cluster.Services.Keepstore},
runGoProgram{src: "services/keep-web", svc: super.cluster.Services.WebDAV},
- runGoProgram{src: "services/ws", svc: super.cluster.Services.Websocket, depends: []supervisedTask{runPostgreSQL{}}},
+ runServiceCommand{name: "ws", svc: super.cluster.Services.Websocket, depends: []supervisedTask{runPostgreSQL{}}},
installPassenger{src: "services/api"},
- runPassenger{src: "services/api", svc: super.cluster.Services.RailsAPI, depends: []supervisedTask{createCertificates{}, runPostgreSQL{}, installPassenger{src: "services/api"}}},
+ runPassenger{src: "services/api", varlibdir: "railsapi", svc: super.cluster.Services.RailsAPI, depends: []supervisedTask{createCertificates{}, runPostgreSQL{}, installPassenger{src: "services/api"}}},
installPassenger{src: "apps/workbench", depends: []supervisedTask{installPassenger{src: "services/api"}}}, // dependency ensures workbench doesn't delay api startup
- runPassenger{src: "apps/workbench", svc: super.cluster.Services.Workbench1, depends: []supervisedTask{installPassenger{src: "apps/workbench"}}},
+ runPassenger{src: "apps/workbench", varlibdir: "workbench1", svc: super.cluster.Services.Workbench1, depends: []supervisedTask{installPassenger{src: "apps/workbench"}}},
seedDatabase{},
}
if super.ClusterType != "test" {
tasks = append(tasks,
- runServiceCommand{name: "dispatch-cloud", svc: super.cluster.Services.Controller},
- runGoProgram{src: "services/keep-balance"},
+ runServiceCommand{name: "dispatch-cloud", svc: super.cluster.Services.DispatchCloud},
+ runGoProgram{src: "services/keep-balance", svc: super.cluster.Services.Keepbalance},
)
}
super.tasksReady = map[string]chan bool{}
func (super *Supervisor) installGoProgram(ctx context.Context, srcpath string) (string, error) {
_, basename := filepath.Split(srcpath)
- bindir := filepath.Join(super.tempdir, "bin")
- binfile := filepath.Join(bindir, basename)
- err := super.RunProgram(ctx, filepath.Join(super.SourcePath, srcpath), nil, []string{"GOBIN=" + bindir}, "go", "install", "-ldflags", "-X git.arvados.org/arvados.git/lib/cmd.version="+super.SourceVersion+" -X main.version="+super.SourceVersion)
+ binfile := filepath.Join(super.bindir, basename)
+ if super.ClusterType == "production" {
+ return binfile, nil
+ }
+ err := super.RunProgram(ctx, filepath.Join(super.SourcePath, srcpath), nil, []string{"GOBIN=" + super.bindir}, "go", "install", "-ldflags", "-X git.arvados.org/arvados.git/lib/cmd.version="+super.SourceVersion+" -X main.version="+super.SourceVersion)
return binfile, err
}
"GEM_PATH=",
})
gem := "gem"
- if _, err := os.Stat("/var/lib/arvados/bin/gem"); err == nil {
+ if _, err := os.Stat("/var/lib/arvados/bin/gem"); err == nil || super.ClusterType == "production" {
gem = "/var/lib/arvados/bin/gem"
}
cmd := exec.Command(gem, "env", "gempath")
+ if super.ClusterType == "production" {
+ cmd.Args = append([]string{"sudo", "-u", "www-data", "-E", "HOME=/var/www"}, cmd.Args...)
+ path, err := exec.LookPath("sudo")
+ if err != nil {
+ return fmt.Errorf("LookPath(\"sudo\"): %w", err)
+ }
+ cmd.Path = path
+ }
+ cmd.Stderr = super.Stderr
cmd.Env = super.environ
buf, err := cmd.Output() // /var/lib/arvados/.gem/ruby/2.5.0/bin:...
if err != nil || len(buf) == 0 {
return prog
}
-// Run prog with args, using dir as working directory. If ctx is
-// cancelled while the child is running, RunProgram terminates the
-// child, waits for it to exit, then returns.
+// RunProgram runs prog with args, using dir as working directory. If ctx is
+// cancelled while the child is running, RunProgram terminates the child, waits
+// for it to exit, then returns.
//
// Child's environment will have our env vars, plus any given in env.
//
super.logger.WithField("command", cmdline).WithField("dir", dir).Info("executing")
logprefix := prog
- if logprefix == "setuidgid" && len(args) >= 3 {
- logprefix = args[2]
- }
- logprefix = strings.TrimPrefix(logprefix, super.tempdir+"/bin/")
- if logprefix == "bundle" && len(args) > 2 && args[0] == "exec" {
- logprefix = args[1]
- } else if logprefix == "arvados-server" && len(args) > 1 {
- logprefix = args[0]
- }
- if !strings.HasPrefix(dir, "/") {
- logprefix = dir + ": " + logprefix
+ {
+ if logprefix == "setuidgid" && len(args) >= 3 {
+ logprefix = args[2]
+ }
+ innerargs := args
+ if logprefix == "sudo" {
+ for i := 0; i < len(args); i++ {
+ if args[i] == "-u" {
+ i++
+ } else if args[i] == "-E" || strings.Contains(args[i], "=") {
+ } else {
+ logprefix = args[i]
+ innerargs = args[i+1:]
+ break
+ }
+ }
+ }
+ logprefix = strings.TrimPrefix(logprefix, "/var/lib/arvados/bin/")
+ logprefix = strings.TrimPrefix(logprefix, super.tempdir+"/bin/")
+ if logprefix == "bundle" && len(innerargs) > 2 && innerargs[0] == "exec" {
+ _, dirbase := filepath.Split(dir)
+ logprefix = innerargs[1] + "@" + dirbase
+ } else if logprefix == "arvados-server" && len(args) > 1 {
+ logprefix = args[0]
+ }
+ if !strings.HasPrefix(dir, "/") {
+ logprefix = dir + ": " + logprefix
+ }
}
cmd := exec.Command(super.lookPath(prog), args...)
if p == "0" {
p = nextPort(h)
}
- cluster.Services.Controller.ExternalURL = arvados.URL{Scheme: "https", Host: net.JoinHostPort(h, p)}
+ cluster.Services.Controller.ExternalURL = arvados.URL{Scheme: "https", Host: net.JoinHostPort(h, p), Path: "/"}
}
for _, svc := range []*arvados.Service{
&cluster.Services.Controller,
if svc.ExternalURL.Host == "" {
if svc == &cluster.Services.Controller ||
svc == &cluster.Services.GitHTTP ||
+ svc == &cluster.Services.Health ||
svc == &cluster.Services.Keepproxy ||
svc == &cluster.Services.WebDAV ||
svc == &cluster.Services.WebDAVDownload ||
svc == &cluster.Services.Workbench1 {
- svc.ExternalURL = arvados.URL{Scheme: "https", Host: fmt.Sprintf("%s:%s", super.ListenHost, nextPort(super.ListenHost))}
+ svc.ExternalURL = arvados.URL{Scheme: "https", Host: fmt.Sprintf("%s:%s", super.ListenHost, nextPort(super.ListenHost)), Path: "/"}
} else if svc == &cluster.Services.Websocket {
- svc.ExternalURL = arvados.URL{Scheme: "wss", Host: fmt.Sprintf("%s:%s", super.ListenHost, nextPort(super.ListenHost))}
+ svc.ExternalURL = arvados.URL{Scheme: "wss", Host: fmt.Sprintf("%s:%s", super.ListenHost, nextPort(super.ListenHost)), Path: "/websocket"}
}
}
if len(svc.InternalURLs) == 0 {
svc.InternalURLs = map[arvados.URL]arvados.ServiceInstance{
- arvados.URL{Scheme: "http", Host: fmt.Sprintf("%s:%s", super.ListenHost, nextPort(super.ListenHost))}: arvados.ServiceInstance{},
+ {Scheme: "http", Host: fmt.Sprintf("%s:%s", super.ListenHost, nextPort(super.ListenHost)), Path: "/"}: {},
}
}
}
- if cluster.SystemRootToken == "" {
- cluster.SystemRootToken = randomHexString(64)
- }
- if cluster.ManagementToken == "" {
- cluster.ManagementToken = randomHexString(64)
- }
- if cluster.API.RailsSessionSecretToken == "" {
- cluster.API.RailsSessionSecretToken = randomHexString(64)
- }
- if cluster.Collections.BlobSigningKey == "" {
- cluster.Collections.BlobSigningKey = randomHexString(64)
- }
- if super.ClusterType != "production" && cluster.Containers.DispatchPrivateKey == "" {
- buf, err := ioutil.ReadFile(filepath.Join(super.SourcePath, "lib", "dispatchcloud", "test", "sshkey_dispatch"))
- if err != nil {
- return err
- }
- cluster.Containers.DispatchPrivateKey = string(buf)
- }
if super.ClusterType != "production" {
+ if cluster.SystemRootToken == "" {
+ cluster.SystemRootToken = randomHexString(64)
+ }
+ if cluster.ManagementToken == "" {
+ cluster.ManagementToken = randomHexString(64)
+ }
+ if cluster.API.RailsSessionSecretToken == "" {
+ cluster.API.RailsSessionSecretToken = randomHexString(64)
+ }
+ if cluster.Collections.BlobSigningKey == "" {
+ cluster.Collections.BlobSigningKey = randomHexString(64)
+ }
+ if cluster.Containers.DispatchPrivateKey == "" {
+ buf, err := ioutil.ReadFile(filepath.Join(super.SourcePath, "lib", "dispatchcloud", "test", "sshkey_dispatch"))
+ if err != nil {
+ return err
+ }
+ cluster.Containers.DispatchPrivateKey = string(buf)
+ }
cluster.TLS.Insecure = true
}
if super.ClusterType == "test" {
// Add a second keepstore process.
- cluster.Services.Keepstore.InternalURLs[arvados.URL{Scheme: "http", Host: fmt.Sprintf("%s:%s", super.ListenHost, nextPort(super.ListenHost))}] = arvados.ServiceInstance{}
+ cluster.Services.Keepstore.InternalURLs[arvados.URL{Scheme: "http", Host: fmt.Sprintf("%s:%s", super.ListenHost, nextPort(super.ListenHost)), Path: "/"}] = arvados.ServiceInstance{}
// Create a directory-backed volume for each keepstore
// process.
return "", errors.New("internalPort() doesn't work with multiple InternalURLs")
}
for u := range svc.InternalURLs {
- if _, p, err := net.SplitHostPort(u.Host); err != nil {
- return "", err
- } else if p != "" {
+ u := url.URL(u)
+ if p := u.Port(); p != "" {
return p, nil
- } else if u.Scheme == "https" {
+ } else if u.Scheme == "https" || u.Scheme == "ws" {
return "443", nil
} else {
return "80", nil
}
func externalPort(svc arvados.Service) (string, error) {
- if _, p, err := net.SplitHostPort(svc.ExternalURL.Host); err != nil {
- return "", err
- } else if p != "" {
+ u := url.URL(svc.ExternalURL)
+ if p := u.Port(); p != "" {
return p, nil
- } else if svc.ExternalURL.Scheme == "https" {
+ } else if u.Scheme == "https" || u.Scheme == "wss" {
return "443", nil
} else {
return "80", nil
}
return ctx.Err()
}
+
+func copyConfig(cfg *arvados.Config) *arvados.Config {
+ pr, pw := io.Pipe()
+ go func() {
+ err := json.NewEncoder(pw).Encode(cfg)
+ if err != nil {
+ panic(err)
+ }
+ pw.Close()
+ }()
+ cfg2 := new(arvados.Config)
+ err := json.NewDecoder(pr).Decode(cfg2)
+ if err != nil {
+ panic(err)
+ }
+ return cfg2
+}
+
+func watchConfig(ctx context.Context, logger logrus.FieldLogger, cfgPath string, prevcfg *arvados.Config, fn func()) {
+ watcher, err := fsnotify.NewWatcher()
+ if err != nil {
+ logger.WithError(err).Error("fsnotify setup failed")
+ return
+ }
+ defer watcher.Close()
+
+ err = watcher.Add(cfgPath)
+ if err != nil {
+ logger.WithError(err).Error("fsnotify watcher failed")
+ return
+ }
+
+ for {
+ select {
+ case <-ctx.Done():
+ return
+ case err, ok := <-watcher.Errors:
+ if !ok {
+ return
+ }
+ logger.WithError(err).Warn("fsnotify watcher reported error")
+ case _, ok := <-watcher.Events:
+ if !ok {
+ return
+ }
+ for len(watcher.Events) > 0 {
+ <-watcher.Events
+ }
+ loader := config.NewLoader(&bytes.Buffer{}, &logrus.Logger{Out: ioutil.Discard})
+ loader.Path = cfgPath
+ loader.SkipAPICalls = true
+ cfg, err := loader.Load()
+ if err != nil {
+ logger.WithError(err).Warn("error reloading config file after change detected; ignoring new config for now")
+ } else if reflect.DeepEqual(cfg, prevcfg) {
+ logger.Debug("config file changed but is still DeepEqual to the existing config")
+ } else {
+ logger.Debug("config changed, notifying supervisor")
+ fn()
+ prevcfg = cfg
+ }
+ }
+ }
+}
projects / arvados.git / blobdiff