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.
14 "git.curoverse.com/arvados.git/lib/cmd"
15 "git.curoverse.com/arvados.git/sdk/go/arvados"
16 "git.curoverse.com/arvados.git/sdk/go/httpserver"
17 "github.com/Sirupsen/logrus"
18 "github.com/coreos/go-systemd/daemon"
21 type Handler interface {
26 type NewHandlerFunc func(*arvados.Cluster, *arvados.SystemNode) Handler
29 newHandler NewHandlerFunc
30 svcName arvados.ServiceName
33 // Command returns a cmd.Handler that loads site config, calls
34 // newHandler with the current cluster and node configs, and brings up
35 // an http server with the returned handler.
37 // The handler is wrapped with server middleware (adding X-Request-ID
38 // headers, logging requests/responses, etc).
39 func Command(svcName arvados.ServiceName, newHandler NewHandlerFunc) cmd.Handler {
41 newHandler: newHandler,
46 func (c *command) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
48 log.Formatter = &logrus.JSONFormatter{
49 TimestampFormat: rfc3339NanoFixed,
56 log.WithError(err).Info("exiting")
59 flags := flag.NewFlagSet("", flag.ContinueOnError)
60 flags.SetOutput(stderr)
61 configFile := flags.String("config", arvados.DefaultConfigFile, "Site configuration `file`")
62 hostName := flags.String("host", "", "Host profile `name` to use in SystemNodes config (if blank, use hostname reported by OS)")
63 err = flags.Parse(args)
64 if err == flag.ErrHelp {
67 } else if err != nil {
70 cfg, err := arvados.GetConfig(*configFile)
74 cluster, err := cfg.GetCluster("")
78 node, err := cluster.GetSystemNode(*hostName)
82 listen := node.ServicePorts()[c.svcName]
84 err = fmt.Errorf("configuration does not enable the %s service on this host", c.svcName)
87 handler := c.newHandler(cluster, node)
88 if err = handler.CheckHealth(); err != nil {
91 srv := &httpserver.Server{
93 Handler: httpserver.AddRequestIDs(httpserver.LogRequests(log, handler)),
101 log.WithFields(logrus.Fields{
103 "Service": c.svcName,
105 if _, err := daemon.SdNotify(false, "READY=1"); err != nil {
106 log.WithError(err).Errorf("error notifying init daemon")
115 const rfc3339NanoFixed = "2006-01-02T15:04:05.000000000Z07:00"