lib/boot/passenger.go

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 package boot
   6
   7 import (
   8         "bytes"
   9         "context"
  10         "fmt"
  11         "os"
  12         "path/filepath"
  13         "strings"
  14         "sync"
  15
  16         "git.arvados.org/arvados.git/sdk/go/arvados"
  17 )
  18
  19 // Don't trust "passenger-config" (or "bundle install") to handle
  20 // concurrent installs.
  21 var passengerInstallMutex sync.Mutex
  22
  23 var railsEnv = []string{
  24         "ARVADOS_RAILS_LOG_TO_STDOUT=1",
  25         "ARVADOS_CONFIG_NOLEGACY=1", // don't load database.yml from source tree
  26 }
  27
  28 // Install a Rails application's dependencies, including phusion
  29 // passenger.
  30 type installPassenger struct {
  31         src     string
  32         depends []supervisedTask
  33 }
  34
  35 func (runner installPassenger) String() string {
  36         return "installPassenger:" + runner.src
  37 }
  38
  39 func (runner installPassenger) Run(ctx context.Context, fail func(error), super *Supervisor) error {
  40         err := super.wait(ctx, runner.depends...)
  41         if err != nil {
  42                 return err
  43         }
  44
  45         passengerInstallMutex.Lock()
  46         defer passengerInstallMutex.Unlock()
  47
  48         var buf bytes.Buffer
  49         err = super.RunProgram(ctx, runner.src, &buf, nil, "gem", "list", "--details", "bundler")
  50         if err != nil {
  51                 return err
  52         }
  53         for _, version := range []string{"1.11.0", "1.17.3", "2.0.2"} {
  54                 if !strings.Contains(buf.String(), "("+version+")") {
  55                         err = super.RunProgram(ctx, runner.src, nil, nil, "gem", "install", "--user", "bundler:1.11", "bundler:1.17.3", "bundler:2.0.2")
  56                         if err != nil {
  57                                 return err
  58                         }
  59                         break
  60                 }
  61         }
  62         err = super.RunProgram(ctx, runner.src, nil, nil, "bundle", "install", "--jobs", "4", "--path", filepath.Join(os.Getenv("HOME"), ".gem"))
  63         if err != nil {
  64                 return err
  65         }
  66         err = super.RunProgram(ctx, runner.src, nil, nil, "bundle", "exec", "passenger-config", "build-native-support")
  67         if err != nil {
  68                 return err
  69         }
  70         err = super.RunProgram(ctx, runner.src, nil, nil, "bundle", "exec", "passenger-config", "install-standalone-runtime")
  71         if err != nil {
  72                 return err
  73         }
  74         err = super.RunProgram(ctx, runner.src, nil, nil, "bundle", "exec", "passenger-config", "validate-install")
  75         if err != nil && !strings.Contains(err.Error(), "exit status 2") {
  76                 // Exit code 2 indicates there were warnings (like
  77                 // "other passenger installations have been detected",
  78                 // which we can't expect to avoid) but no errors.
  79                 // Other non-zero exit codes (1, 9) indicate errors.
  80                 return err
  81         }
  82         return nil
  83 }
  84
  85 type runPassenger struct {
  86         src     string
  87         svc     arvados.Service
  88         depends []supervisedTask
  89 }
  90
  91 func (runner runPassenger) String() string {
  92         return "runPassenger:" + runner.src
  93 }
  94
  95 func (runner runPassenger) Run(ctx context.Context, fail func(error), super *Supervisor) error {
  96         err := super.wait(ctx, runner.depends...)
  97         if err != nil {
  98                 return err
  99         }
 100         port, err := internalPort(runner.svc)
 101         if err != nil {
 102                 return fmt.Errorf("bug: no internalPort for %q: %v (%#v)", runner, err, runner.svc)
 103         }
 104         loglevel := "4"
 105         if lvl, ok := map[string]string{
 106                 "debug":   "5",
 107                 "info":    "4",
 108                 "warn":    "2",
 109                 "warning": "2",
 110                 "error":   "1",
 111                 "fatal":   "0",
 112                 "panic":   "0",
 113         }[super.cluster.SystemLogs.LogLevel]; ok {
 114                 loglevel = lvl
 115         }
 116         super.waitShutdown.Add(1)
 117         go func() {
 118                 defer super.waitShutdown.Done()
 119                 err = super.RunProgram(ctx, runner.src, nil, railsEnv, "bundle", "exec",
 120                         "passenger", "start",
 121                         "-p", port,
 122                         "--log-file", "/dev/stderr",
 123                         "--log-level", loglevel,
 124                         "--no-friendly-error-pages",
 125                         "--pid-file", filepath.Join(super.tempdir, "passenger."+strings.Replace(runner.src, "/", "_", -1)+".pid"))
 126                 fail(err)
 127         }()
 128         return nil
 129 }