cmd/arvados-server/cmd.go

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 package main
   6
   7 import (
   8         "context"
   9         "encoding/json"
  10         "fmt"
  11         "io"
  12         "net/http"
  13         "os"
  14
  15         "git.arvados.org/arvados.git/lib/boot"
  16         "git.arvados.org/arvados.git/lib/cloud/cloudtest"
  17         "git.arvados.org/arvados.git/lib/cmd"
  18         "git.arvados.org/arvados.git/lib/config"
  19         "git.arvados.org/arvados.git/lib/controller"
  20         "git.arvados.org/arvados.git/lib/crunchrun"
  21         "git.arvados.org/arvados.git/lib/dispatchcloud"
  22         "git.arvados.org/arvados.git/lib/install"
  23         "git.arvados.org/arvados.git/lib/lsf"
  24         "git.arvados.org/arvados.git/lib/recovercollection"
  25         "git.arvados.org/arvados.git/lib/service"
  26         "git.arvados.org/arvados.git/sdk/go/arvados"
  27         "git.arvados.org/arvados.git/sdk/go/health"
  28         "git.arvados.org/arvados.git/services/githttpd"
  29         keepbalance "git.arvados.org/arvados.git/services/keep-balance"
  30         keepweb "git.arvados.org/arvados.git/services/keep-web"
  31         "git.arvados.org/arvados.git/services/keepproxy"
  32         "git.arvados.org/arvados.git/services/keepstore"
  33         "git.arvados.org/arvados.git/services/ws"
  34         "github.com/prometheus/client_golang/prometheus"
  35 )
  36
  37 var (
  38         handler = cmd.Multi(map[string]cmd.Handler{
  39                 "version":   cmd.Version,
  40                 "-version":  cmd.Version,
  41                 "--version": cmd.Version,
  42
  43                 "boot":               boot.Command,
  44                 "check":              health.CheckCommand,
  45                 "cloudtest":          cloudtest.Command,
  46                 "config-check":       config.CheckCommand,
  47                 "config-defaults":    config.DumpDefaultsCommand,
  48                 "config-dump":        config.DumpCommand,
  49                 "controller":         controller.Command,
  50                 "crunch-run":         crunchrun.Command,
  51                 "dispatch-cloud":     dispatchcloud.Command,
  52                 "dispatch-lsf":       lsf.DispatchCommand,
  53                 "git-httpd":          githttpd.Command,
  54                 "health":             healthCommand,
  55                 "install":            install.Command,
  56                 "init":               install.InitCommand,
  57                 "keep-balance":       keepbalance.Command,
  58                 "keep-web":           keepweb.Command,
  59                 "keepproxy":          keepproxy.Command,
  60                 "keepstore":          keepstore.Command,
  61                 "recover-collection": recovercollection.Command,
  62                 "workbench2":         wb2command{},
  63                 "ws":                 ws.Command,
  64         })
  65 )
  66
  67 func main() {
  68         os.Exit(handler.RunCommand(os.Args[0], os.Args[1:], os.Stdin, os.Stdout, os.Stderr))
  69 }
  70
  71 type wb2command struct{}
  72
  73 func (wb2command) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
  74         if len(args) != 3 {
  75                 fmt.Fprintf(stderr, "usage: %s api-host listen-addr app-dir\n", prog)
  76                 return 1
  77         }
  78         configJSON, err := json.Marshal(map[string]string{"API_HOST": args[0]})
  79         if err != nil {
  80                 fmt.Fprintf(stderr, "json.Marshal: %s\n", err)
  81                 return 1
  82         }
  83         mux := http.NewServeMux()
  84         mux.Handle("/", http.FileServer(http.Dir(args[2])))
  85         mux.HandleFunc("/config.json", func(w http.ResponseWriter, _ *http.Request) {
  86                 w.Write(configJSON)
  87         })
  88         mux.HandleFunc("/_health/ping", func(w http.ResponseWriter, _ *http.Request) {
  89                 io.WriteString(w, `{"health":"OK"}`)
  90         })
  91         err = http.ListenAndServe(args[1], mux)
  92         if err != nil {
  93                 fmt.Fprintln(stderr, err.Error())
  94                 return 1
  95         }
  96         return 0
  97 }
  98
  99 var healthCommand cmd.Handler = service.Command(arvados.ServiceNameHealth, func(ctx context.Context, cluster *arvados.Cluster, _ string, reg *prometheus.Registry) service.Handler {
 100         mClockSkew := prometheus.NewGauge(prometheus.GaugeOpts{
 101                 Namespace: "arvados",
 102                 Subsystem: "health",
 103                 Name:      "clock_skew_seconds",
 104                 Help:      "Clock skew observed in most recent health check",
 105         })
 106         reg.MustRegister(mClockSkew)
 107         return &health.Aggregator{
 108                 Cluster:         cluster,
 109                 MetricClockSkew: mClockSkew,
 110         }
 111 })