1 // Copyright (C) The Arvados Authors. All rights reserved.
3 // SPDX-License-Identifier: Apache-2.0
5 // package service provides a cmd.Handler that brings up a system service.
21 "git.curoverse.com/arvados.git/lib/cmd"
22 "git.curoverse.com/arvados.git/lib/config"
23 "git.curoverse.com/arvados.git/sdk/go/arvados"
24 "git.curoverse.com/arvados.git/sdk/go/ctxlog"
25 "git.curoverse.com/arvados.git/sdk/go/httpserver"
26 "github.com/coreos/go-systemd/daemon"
27 "github.com/sirupsen/logrus"
30 type Handler interface {
35 type NewHandlerFunc func(_ context.Context, _ *arvados.Cluster, token string) Handler
38 newHandler NewHandlerFunc
39 svcName arvados.ServiceName
40 ctx context.Context // enables tests to shutdown service; no public API yet
43 // Command returns a cmd.Handler that loads site config, calls
44 // newHandler with the current cluster and node configs, and brings up
45 // an http server with the returned handler.
47 // The handler is wrapped with server middleware (adding X-Request-ID
48 // headers, logging requests/responses, etc).
49 func Command(svcName arvados.ServiceName, newHandler NewHandlerFunc) cmd.Handler {
51 newHandler: newHandler,
53 ctx: context.Background(),
57 func (c *command) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
58 log := ctxlog.New(stderr, "json", "info")
63 log.WithError(err).Info("exiting")
66 flags := flag.NewFlagSet("", flag.ContinueOnError)
67 flags.SetOutput(stderr)
68 configFile := flags.String("config", arvados.DefaultConfigFile, "Site configuration `file`")
69 err = flags.Parse(args)
70 if err == flag.ErrHelp {
73 } else if err != nil {
76 // Logged warnings are discarded for now: the config template
77 // is incomplete, which causes extra warnings about keys that
79 cfg, err := config.LoadFile(*configFile, ctxlog.New(ioutil.Discard, "json", "error"))
83 cluster, err := cfg.GetCluster("")
87 log = ctxlog.New(stderr, cluster.SystemLogs.Format, cluster.SystemLogs.LogLevel).WithFields(logrus.Fields{
90 ctx := ctxlog.Context(c.ctx, log)
92 listen, err := getListenAddr(cluster.Services, c.svcName)
97 if cluster.SystemRootToken == "" {
98 log.Warn("SystemRootToken missing from cluster config, falling back to ARVADOS_API_TOKEN environment variable")
99 cluster.SystemRootToken = os.Getenv("ARVADOS_API_TOKEN")
101 if cluster.Services.Controller.ExternalURL.Host == "" {
102 log.Warn("Services.Controller.ExternalURL missing from cluster config, falling back to ARVADOS_API_HOST(_INSECURE) environment variables")
103 u, err := url.Parse("https://" + os.Getenv("ARVADOS_API_HOST"))
105 err = fmt.Errorf("ARVADOS_API_HOST: %s", err)
108 cluster.Services.Controller.ExternalURL = arvados.URL(*u)
109 if i := os.Getenv("ARVADOS_API_HOST_INSECURE"); i != "" && i != "0" {
110 cluster.TLS.Insecure = true
114 handler := c.newHandler(ctx, cluster, cluster.SystemRootToken)
115 if err = handler.CheckHealth(); err != nil {
118 srv := &httpserver.Server{
120 Handler: httpserver.AddRequestIDs(httpserver.LogRequests(log, handler)),
128 log.WithFields(logrus.Fields{
130 "Service": c.svcName,
132 if _, err := daemon.SdNotify(false, "READY=1"); err != nil {
133 log.WithError(err).Errorf("error notifying init daemon")
146 const rfc3339NanoFixed = "2006-01-02T15:04:05.000000000Z07:00"
148 func getListenAddr(svcs arvados.Services, prog arvados.ServiceName) (string, error) {
149 svc, ok := map[arvados.ServiceName]arvados.Service{
150 arvados.ServiceNameController: svcs.Controller,
151 arvados.ServiceNameDispatchCloud: svcs.DispatchCloud,
152 arvados.ServiceNameHealth: svcs.Health,
153 arvados.ServiceNameKeepbalance: svcs.Keepbalance,
154 arvados.ServiceNameKeepproxy: svcs.Keepproxy,
155 arvados.ServiceNameKeepstore: svcs.Keepstore,
156 arvados.ServiceNameKeepweb: svcs.WebDAV,
157 arvados.ServiceNameWebsocket: svcs.Websocket,
160 return "", fmt.Errorf("unknown service name %q", prog)
162 for url := range svc.InternalURLs {
163 if strings.HasPrefix(url.Host, "localhost:") {
166 listener, err := net.Listen("tcp", url.Host)
174 return "", fmt.Errorf("configuration does not enable the %s service on this host", prog)