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         dispatchslurm "git.arvados.org/arvados.git/services/crunch-dispatch-slurm"
  29         "git.arvados.org/arvados.git/services/githttpd"
  30         keepbalance "git.arvados.org/arvados.git/services/keep-balance"
  31         keepweb "git.arvados.org/arvados.git/services/keep-web"
  32         "git.arvados.org/arvados.git/services/keepproxy"
  33         "git.arvados.org/arvados.git/services/keepstore"
  34         "git.arvados.org/arvados.git/services/ws"
  35         "github.com/prometheus/client_golang/prometheus"
  36 )
  37
  38 var (
  39         handler = cmd.Multi(map[string]cmd.Handler{
  40                 "version":   cmd.Version,
  41                 "-version":  cmd.Version,
  42                 "--version": cmd.Version,
  43
  44                 "boot":               boot.Command,
  45                 "check":              health.CheckCommand,
  46                 "cloudtest":          cloudtest.Command,
  47                 "config-check":       config.CheckCommand,
  48                 "config-defaults":    config.DumpDefaultsCommand,
  49                 "config-dump":        config.DumpCommand,
  50                 "controller":         controller.Command,
  51                 "crunch-run":         crunchrun.Command,
  52                 "dispatch-cloud":     dispatchcloud.Command,
  53                 "dispatch-lsf":       lsf.DispatchCommand,
  54                 "dispatch-slurm":     dispatchslurm.Command,
  55                 "git-httpd":          githttpd.Command,
  56                 "health":             healthCommand,
  57                 "install":            install.Command,
  58                 "init":               install.InitCommand,
  59                 "keep-balance":       keepbalance.Command,
  60                 "keep-web":           keepweb.Command,
  61                 "keepproxy":          keepproxy.Command,
  62                 "keepstore":          keepstore.Command,
  63                 "recover-collection": recovercollection.Command,
  64                 "workbench2":         wb2command{},
  65                 "ws":                 ws.Command,
  66         })
  67 )
  68
  69 func main() {
  70         os.Exit(handler.RunCommand(os.Args[0], os.Args[1:], os.Stdin, os.Stdout, os.Stderr))
  71 }
  72
  73 type wb2command struct{}
  74
  75 func (wb2command) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
  76         if len(args) != 3 {
  77                 fmt.Fprintf(stderr, "usage: %s api-host listen-addr app-dir\n", prog)
  78                 return 1
  79         }
  80         configJSON, err := json.Marshal(map[string]string{"API_HOST": args[0]})
  81         if err != nil {
  82                 fmt.Fprintf(stderr, "json.Marshal: %s\n", err)
  83                 return 1
  84         }
  85         mux := http.NewServeMux()
  86         mux.Handle("/", http.FileServer(http.Dir(args[2])))
  87         mux.HandleFunc("/config.json", func(w http.ResponseWriter, _ *http.Request) {
  88                 w.Write(configJSON)
  89         })
  90         mux.HandleFunc("/_health/ping", func(w http.ResponseWriter, _ *http.Request) {
  91                 io.WriteString(w, `{"health":"OK"}`)
  92         })
  93         err = http.ListenAndServe(args[1], mux)
  94         if err != nil {
  95                 fmt.Fprintln(stderr, err.Error())
  96                 return 1
  97         }
  98         return 0
  99 }
 100
 101 var healthCommand cmd.Handler = service.Command(arvados.ServiceNameHealth, func(ctx context.Context, cluster *arvados.Cluster, _ string, reg *prometheus.Registry) service.Handler {
 102         mClockSkew := prometheus.NewGauge(prometheus.GaugeOpts{
 103                 Namespace: "arvados",
 104                 Subsystem: "health",
 105                 Name:      "clock_skew_seconds",
 106                 Help:      "Clock skew observed in most recent health check",
 107         })
 108         reg.MustRegister(mClockSkew)
 109         return &health.Aggregator{
 110                 Cluster:         cluster,
 111                 MetricClockSkew: mClockSkew,
 112         }
 113 })