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         "path"
  15         "path/filepath"
  16         "strings"
  17
  18         "git.arvados.org/arvados.git/lib/boot"
  19         "git.arvados.org/arvados.git/lib/cloud/cloudtest"
  20         "git.arvados.org/arvados.git/lib/cmd"
  21         "git.arvados.org/arvados.git/lib/config"
  22         "git.arvados.org/arvados.git/lib/controller"
  23         "git.arvados.org/arvados.git/lib/crunchrun"
  24         "git.arvados.org/arvados.git/lib/dispatchcloud"
  25         "git.arvados.org/arvados.git/lib/install"
  26         "git.arvados.org/arvados.git/lib/lsf"
  27         "git.arvados.org/arvados.git/lib/recovercollection"
  28         "git.arvados.org/arvados.git/lib/service"
  29         "git.arvados.org/arvados.git/sdk/go/arvados"
  30         "git.arvados.org/arvados.git/sdk/go/health"
  31         "git.arvados.org/arvados.git/services/githttpd"
  32         keepbalance "git.arvados.org/arvados.git/services/keep-balance"
  33         keepweb "git.arvados.org/arvados.git/services/keep-web"
  34         "git.arvados.org/arvados.git/services/keepproxy"
  35         "git.arvados.org/arvados.git/services/keepstore"
  36         "git.arvados.org/arvados.git/services/ws"
  37         "github.com/prometheus/client_golang/prometheus"
  38 )
  39
  40 var (
  41         handler = cmd.Multi(map[string]cmd.Handler{
  42                 "version":   cmd.Version,
  43                 "-version":  cmd.Version,
  44                 "--version": cmd.Version,
  45
  46                 "boot":               boot.Command,
  47                 "check":              health.CheckCommand,
  48                 "cloudtest":          cloudtest.Command,
  49                 "config-check":       config.CheckCommand,
  50                 "config-defaults":    config.DumpDefaultsCommand,
  51                 "config-dump":        config.DumpCommand,
  52                 "controller":         controller.Command,
  53                 "crunch-run":         crunchrun.Command,
  54                 "dispatch-cloud":     dispatchcloud.Command,
  55                 "dispatch-lsf":       lsf.DispatchCommand,
  56                 "git-httpd":          githttpd.Command,
  57                 "health":             healthCommand,
  58                 "install":            install.Command,
  59                 "init":               install.InitCommand,
  60                 "keep-balance":       keepbalance.Command,
  61                 "keep-web":           keepweb.Command,
  62                 "keepproxy":          keepproxy.Command,
  63                 "keepstore":          keepstore.Command,
  64                 "recover-collection": recovercollection.Command,
  65                 "workbench2":         wb2command{},
  66                 "ws":                 ws.Command,
  67         })
  68 )
  69
  70 func main() {
  71         os.Exit(handler.RunCommand(os.Args[0], os.Args[1:], os.Stdin, os.Stdout, os.Stderr))
  72 }
  73
  74 type wb2command struct{}
  75
  76 func (wb2command) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
  77         if len(args) != 3 {
  78                 fmt.Fprintf(stderr, "usage: %s api-host listen-addr app-dir\n", prog)
  79                 return 1
  80         }
  81         configJSON, err := json.Marshal(map[string]string{"API_HOST": args[0]})
  82         if err != nil {
  83                 fmt.Fprintf(stderr, "json.Marshal: %s\n", err)
  84                 return 1
  85         }
  86         servefs := http.FileServer(http.Dir(args[2]))
  87         mux := http.NewServeMux()
  88         mux.Handle("/", http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
  89                 for _, ent := range strings.Split(req.URL.Path, "/") {
  90                         if ent == ".." {
  91                                 http.Error(w, "invalid URL path", http.StatusBadRequest)
  92                                 return
  93                         }
  94                 }
  95                 fnm := filepath.Join(args[2], filepath.FromSlash(path.Clean("/"+req.URL.Path)))
  96                 if _, err := os.Stat(fnm); os.IsNotExist(err) {
  97                         req.URL.Path = "/"
  98                 }
  99                 servefs.ServeHTTP(w, req)
 100         }))
 101         mux.HandleFunc("/config.json", func(w http.ResponseWriter, _ *http.Request) {
 102                 w.Write(configJSON)
 103         })
 104         mux.HandleFunc("/_health/ping", func(w http.ResponseWriter, _ *http.Request) {
 105                 io.WriteString(w, `{"health":"OK"}`)
 106         })
 107         err = http.ListenAndServe(args[1], mux)
 108         if err != nil {
 109                 fmt.Fprintln(stderr, err.Error())
 110                 return 1
 111         }
 112         return 0
 113 }
 114
 115 var healthCommand cmd.Handler = service.Command(arvados.ServiceNameHealth, func(ctx context.Context, cluster *arvados.Cluster, _ string, reg *prometheus.Registry) service.Handler {
 116         mClockSkew := prometheus.NewGauge(prometheus.GaugeOpts{
 117                 Namespace: "arvados",
 118                 Subsystem: "health",
 119                 Name:      "clock_skew_seconds",
 120                 Help:      "Clock skew observed in most recent health check",
 121         })
 122         reg.MustRegister(mClockSkew)
 123         return &health.Aggregator{
 124                 Cluster:         cluster,
 125                 MetricClockSkew: mClockSkew,
 126         }
 127 })