lib/crunchrun/executor_test.go

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 package crunchrun
   6
   7 import (
   8         "bytes"
   9         "io"
  10         "strings"
  11         "time"
  12
  13         "git.arvados.org/arvados.git/sdk/go/arvados"
  14         "git.arvados.org/arvados.git/sdk/go/arvadostest"
  15         "golang.org/x/net/context"
  16         . "gopkg.in/check.v1"
  17 )
  18
  19 type nopWriteCloser struct{ io.Writer }
  20
  21 func (nopWriteCloser) Close() error { return nil }
  22
  23 // embedded by dockerSuite and singularitySuite so they can share
  24 // tests.
  25 type executorSuite struct {
  26         newExecutor func(*C) // embedding struct's SetUpSuite method must set this
  27         executor    containerExecutor
  28         spec        containerSpec
  29         stdout      bytes.Buffer
  30         stderr      bytes.Buffer
  31 }
  32
  33 func (s *executorSuite) SetUpTest(c *C) {
  34         s.newExecutor(c)
  35         s.stdout = bytes.Buffer{}
  36         s.stderr = bytes.Buffer{}
  37         s.spec = containerSpec{
  38                 Image:       "busybox:uclibc",
  39                 VCPUs:       1,
  40                 WorkingDir:  "",
  41                 Env:         map[string]string{"PATH": "/bin:/usr/bin"},
  42                 NetworkMode: "default",
  43                 Stdout:      nopWriteCloser{&s.stdout},
  44                 Stderr:      nopWriteCloser{&s.stderr},
  45         }
  46         err := s.executor.LoadImage("", arvadostest.BusyboxDockerImage(c), arvados.Container{}, "", nil)
  47         c.Assert(err, IsNil)
  48 }
  49
  50 func (s *executorSuite) TearDownTest(c *C) {
  51         s.executor.Close()
  52 }
  53
  54 func (s *executorSuite) TestExecTrivialContainer(c *C) {
  55         s.spec.Command = []string{"echo", "ok"}
  56         s.checkRun(c, 0)
  57         c.Check(s.stdout.String(), Equals, "ok\n")
  58         c.Check(s.stderr.String(), Equals, "")
  59 }
  60
  61 func (s *executorSuite) TestExitStatus(c *C) {
  62         s.spec.Command = []string{"false"}
  63         s.checkRun(c, 1)
  64 }
  65
  66 func (s *executorSuite) TestSignalExitStatus(c *C) {
  67         if _, isdocker := s.executor.(*dockerExecutor); isdocker {
  68                 // It's not quite this easy to make busybox kill
  69                 // itself in docker where it's pid 1.
  70                 c.Skip("kill -9 $$ doesn't work on busybox with pid=1 in docker")
  71                 return
  72         }
  73         s.spec.Command = []string{"sh", "-c", "kill -9 $$"}
  74         s.checkRun(c, 0x80+9)
  75 }
  76
  77 func (s *executorSuite) TestExecStop(c *C) {
  78         s.spec.Command = []string{"sh", "-c", "sleep 10; echo ok"}
  79         err := s.executor.Create(s.spec)
  80         c.Assert(err, IsNil)
  81         err = s.executor.Start()
  82         c.Assert(err, IsNil)
  83         go func() {
  84                 time.Sleep(time.Second / 10)
  85                 s.executor.Stop()
  86         }()
  87         ctx, cancel := context.WithDeadline(context.Background(), time.Now().Add(10*time.Second))
  88         defer cancel()
  89         code, err := s.executor.Wait(ctx)
  90         c.Check(code, Not(Equals), 0)
  91         c.Check(err, IsNil)
  92         c.Check(s.stdout.String(), Equals, "")
  93         c.Check(s.stderr.String(), Equals, "")
  94 }
  95
  96 func (s *executorSuite) TestExecCleanEnv(c *C) {
  97         s.spec.Command = []string{"env"}
  98         s.checkRun(c, 0)
  99         c.Check(s.stderr.String(), Equals, "")
 100         got := map[string]string{}
 101         for _, kv := range strings.Split(s.stdout.String(), "\n") {
 102                 if kv == "" {
 103                         continue
 104                 }
 105                 kv := strings.SplitN(kv, "=", 2)
 106                 switch kv[0] {
 107                 case "HOSTNAME", "HOME":
 108                         // docker sets these by itself
 109                 case "LD_LIBRARY_PATH", "SINGULARITY_NAME", "PWD", "LANG", "SHLVL", "SINGULARITY_INIT", "SINGULARITY_CONTAINER":
 110                         // singularity sets these by itself (cf. https://sylabs.io/guides/3.5/user-guide/environment_and_metadata.html)
 111                 case "SINGULARITY_APPNAME":
 112                         // singularity also sets this by itself (v3.5.2, but not v3.7.4)
 113                 case "PROMPT_COMMAND", "PS1", "SINGULARITY_BIND", "SINGULARITY_COMMAND", "SINGULARITY_ENVIRONMENT":
 114                         // singularity also sets these by itself (v3.7.4)
 115                 default:
 116                         got[kv[0]] = kv[1]
 117                 }
 118         }
 119         c.Check(got, DeepEquals, s.spec.Env)
 120 }
 121 func (s *executorSuite) TestExecEnableNetwork(c *C) {
 122         for _, enable := range []bool{false, true} {
 123                 s.SetUpTest(c)
 124                 s.spec.Command = []string{"ip", "route"}
 125                 s.spec.EnableNetwork = enable
 126                 s.checkRun(c, 0)
 127                 if enable {
 128                         c.Check(s.stdout.String(), Matches, "(?ms).*default via.*")
 129                 } else {
 130                         c.Check(s.stdout.String(), Equals, "")
 131                 }
 132         }
 133 }
 134
 135 func (s *executorSuite) TestExecWorkingDir(c *C) {
 136         s.spec.WorkingDir = "/tmp"
 137         s.spec.Command = []string{"sh", "-c", "pwd"}
 138         s.checkRun(c, 0)
 139         c.Check(s.stdout.String(), Equals, "/tmp\n")
 140 }
 141
 142 func (s *executorSuite) TestExecStdoutStderr(c *C) {
 143         s.spec.Command = []string{"sh", "-c", "echo foo; echo -n bar >&2; echo baz; echo waz >&2"}
 144         s.checkRun(c, 0)
 145         c.Check(s.stdout.String(), Equals, "foo\nbaz\n")
 146         c.Check(s.stderr.String(), Equals, "barwaz\n")
 147 }
 148
 149 func (s *executorSuite) checkRun(c *C, expectCode int) {
 150         c.Assert(s.executor.Create(s.spec), IsNil)
 151         c.Assert(s.executor.Start(), IsNil)
 152         ctx, cancel := context.WithDeadline(context.Background(), time.Now().Add(10*time.Second))
 153         defer cancel()
 154         code, err := s.executor.Wait(ctx)
 155         c.Assert(err, IsNil)
 156         c.Check(code, Equals, expectCode)
 157 }