lib/dispatchcloud/dispatcher_test.go

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 package dispatchcloud
   6
   7 import (
   8         "encoding/json"
   9         "io/ioutil"
  10         "math/rand"
  11         "net/http"
  12         "net/http/httptest"
  13         "os"
  14         "sync"
  15         "time"
  16
  17         "git.curoverse.com/arvados.git/lib/dispatchcloud/test"
  18         "git.curoverse.com/arvados.git/sdk/go/arvados"
  19         "golang.org/x/crypto/ssh"
  20         check "gopkg.in/check.v1"
  21 )
  22
  23 var _ = check.Suite(&DispatcherSuite{})
  24
  25 type DispatcherSuite struct {
  26         cluster    *arvados.Cluster
  27         stubDriver *test.StubDriver
  28         disp       *dispatcher
  29 }
  30
  31 func (s *DispatcherSuite) SetUpTest(c *check.C) {
  32         dispatchpub, _ := test.LoadTestKey(c, "test/sshkey_dispatch")
  33         dispatchprivraw, err := ioutil.ReadFile("test/sshkey_dispatch")
  34         c.Assert(err, check.IsNil)
  35
  36         _, hostpriv := test.LoadTestKey(c, "test/sshkey_vm")
  37         s.stubDriver = &test.StubDriver{
  38                 HostKey:                   hostpriv,
  39                 AuthorizedKeys:            []ssh.PublicKey{dispatchpub},
  40                 ErrorRateDestroy:          0.1,
  41                 MinTimeBetweenCreateCalls: time.Millisecond,
  42         }
  43
  44         s.cluster = &arvados.Cluster{
  45                 CloudVMs: arvados.CloudVMs{
  46                         Driver:          "test",
  47                         SyncInterval:    arvados.Duration(10 * time.Millisecond),
  48                         TimeoutIdle:     arvados.Duration(150 * time.Millisecond),
  49                         TimeoutBooting:  arvados.Duration(150 * time.Millisecond),
  50                         TimeoutProbe:    arvados.Duration(15 * time.Millisecond),
  51                         TimeoutShutdown: arvados.Duration(5 * time.Millisecond),
  52                 },
  53                 Dispatch: arvados.Dispatch{
  54                         PrivateKey:         dispatchprivraw,
  55                         PollInterval:       arvados.Duration(5 * time.Millisecond),
  56                         ProbeInterval:      arvados.Duration(5 * time.Millisecond),
  57                         StaleLockTimeout:   arvados.Duration(5 * time.Millisecond),
  58                         MaxProbesPerSecond: 1000,
  59                 },
  60                 InstanceTypes: arvados.InstanceTypeMap{
  61                         test.InstanceType(1).Name:  test.InstanceType(1),
  62                         test.InstanceType(2).Name:  test.InstanceType(2),
  63                         test.InstanceType(3).Name:  test.InstanceType(3),
  64                         test.InstanceType(4).Name:  test.InstanceType(4),
  65                         test.InstanceType(6).Name:  test.InstanceType(6),
  66                         test.InstanceType(8).Name:  test.InstanceType(8),
  67                         test.InstanceType(16).Name: test.InstanceType(16),
  68                 },
  69                 NodeProfiles: map[string]arvados.NodeProfile{
  70                         "*": {
  71                                 Controller:    arvados.SystemServiceInstance{Listen: os.Getenv("ARVADOS_API_HOST")},
  72                                 DispatchCloud: arvados.SystemServiceInstance{Listen: ":"},
  73                         },
  74                 },
  75         }
  76         s.disp = &dispatcher{Cluster: s.cluster}
  77         // Test cases can modify s.cluster before calling
  78         // initialize(), and then modify private state before calling
  79         // go run().
  80 }
  81
  82 func (s *DispatcherSuite) TearDownTest(c *check.C) {
  83         s.disp.Close()
  84 }
  85
  86 // DispatchToStubDriver checks that the dispatcher wires everything
  87 // together effectively. It uses a real scheduler and worker pool with
  88 // a fake queue and cloud driver. The fake cloud driver injects
  89 // artificial errors in order to exercise a variety of code paths.
  90 func (s *DispatcherSuite) TestDispatchToStubDriver(c *check.C) {
  91         drivers["test"] = s.stubDriver
  92         s.disp.setupOnce.Do(s.disp.initialize)
  93         queue := &test.Queue{
  94                 ChooseType: func(ctr *arvados.Container) (arvados.InstanceType, error) {
  95                         return ChooseInstanceType(s.cluster, ctr)
  96                 },
  97         }
  98         for i := 0; i < 200; i++ {
  99                 queue.Containers = append(queue.Containers, arvados.Container{
 100                         UUID:     test.ContainerUUID(i + 1),
 101                         State:    arvados.ContainerStateQueued,
 102                         Priority: int64(i%20 + 1),
 103                         RuntimeConstraints: arvados.RuntimeConstraints{
 104                                 RAM:   int64(i%3+1) << 30,
 105                                 VCPUs: i%8 + 1,
 106                         },
 107                 })
 108         }
 109         s.disp.queue = queue
 110
 111         var mtx sync.Mutex
 112         done := make(chan struct{})
 113         waiting := map[string]struct{}{}
 114         for _, ctr := range queue.Containers {
 115                 waiting[ctr.UUID] = struct{}{}
 116         }
 117         executeContainer := func(ctr arvados.Container) int {
 118                 mtx.Lock()
 119                 defer mtx.Unlock()
 120                 if _, ok := waiting[ctr.UUID]; !ok {
 121                         c.Logf("container completed twice: %s -- perhaps completed after stub instance was killed?", ctr.UUID)
 122                         return 1
 123                 }
 124                 delete(waiting, ctr.UUID)
 125                 if len(waiting) == 0 {
 126                         close(done)
 127                 }
 128                 return int(rand.Uint32() & 0x3)
 129         }
 130         n := 0
 131         s.stubDriver.Queue = queue
 132         s.stubDriver.SetupVM = func(stubvm *test.StubVM) {
 133                 n++
 134                 stubvm.Boot = time.Now().Add(time.Duration(rand.Int63n(int64(5 * time.Millisecond))))
 135                 stubvm.CrunchRunDetachDelay = time.Duration(rand.Int63n(int64(10 * time.Millisecond)))
 136                 stubvm.ExecuteContainer = executeContainer
 137                 switch n % 7 {
 138                 case 0:
 139                         stubvm.Broken = time.Now().Add(time.Duration(rand.Int63n(90)) * time.Millisecond)
 140                 case 1:
 141                         stubvm.CrunchRunMissing = true
 142                 default:
 143                         stubvm.CrunchRunCrashRate = 0.1
 144                 }
 145         }
 146
 147         start := time.Now()
 148         go s.disp.run()
 149         err := s.disp.CheckHealth()
 150         c.Check(err, check.IsNil)
 151
 152         select {
 153         case <-done:
 154                 c.Logf("containers finished (%s), waiting for instances to shutdown and queue to clear", time.Since(start))
 155         case <-time.After(10 * time.Second):
 156                 c.Fatalf("timed out; still waiting for %d containers: %q", len(waiting), waiting)
 157         }
 158
 159         deadline := time.Now().Add(time.Second)
 160         for range time.NewTicker(10 * time.Millisecond).C {
 161                 insts, err := s.stubDriver.InstanceSets()[0].Instances(nil)
 162                 c.Check(err, check.IsNil)
 163                 queue.Update()
 164                 ents, _ := queue.Entries()
 165                 if len(ents) == 0 && len(insts) == 0 {
 166                         break
 167                 }
 168                 if time.Now().After(deadline) {
 169                         c.Fatalf("timed out with %d containers (%v), %d instances (%+v)", len(ents), ents, len(insts), insts)
 170                 }
 171         }
 172 }
 173
 174 func (s *DispatcherSuite) TestAPIPermissions(c *check.C) {
 175         s.cluster.ManagementToken = "abcdefgh"
 176         drivers["test"] = s.stubDriver
 177         s.disp.setupOnce.Do(s.disp.initialize)
 178         s.disp.queue = &test.Queue{}
 179         go s.disp.run()
 180
 181         for _, token := range []string{"abc", ""} {
 182                 req := httptest.NewRequest("GET", "/arvados/v1/dispatch/instances", nil)
 183                 if token != "" {
 184                         req.Header.Set("Authorization", "Bearer "+token)
 185                 }
 186                 resp := httptest.NewRecorder()
 187                 s.disp.ServeHTTP(resp, req)
 188                 if token == "" {
 189                         c.Check(resp.Code, check.Equals, http.StatusUnauthorized)
 190                 } else {
 191                         c.Check(resp.Code, check.Equals, http.StatusForbidden)
 192                 }
 193         }
 194 }
 195
 196 func (s *DispatcherSuite) TestAPIDisabled(c *check.C) {
 197         s.cluster.ManagementToken = ""
 198         drivers["test"] = s.stubDriver
 199         s.disp.setupOnce.Do(s.disp.initialize)
 200         s.disp.queue = &test.Queue{}
 201         go s.disp.run()
 202
 203         for _, token := range []string{"abc", ""} {
 204                 req := httptest.NewRequest("GET", "/arvados/v1/dispatch/instances", nil)
 205                 if token != "" {
 206                         req.Header.Set("Authorization", "Bearer "+token)
 207                 }
 208                 resp := httptest.NewRecorder()
 209                 s.disp.ServeHTTP(resp, req)
 210                 c.Check(resp.Code, check.Equals, http.StatusForbidden)
 211         }
 212 }
 213
 214 func (s *DispatcherSuite) TestInstancesAPI(c *check.C) {
 215         s.cluster.ManagementToken = "abcdefgh"
 216         s.cluster.CloudVMs.TimeoutBooting = arvados.Duration(time.Second)
 217         drivers["test"] = s.stubDriver
 218         s.disp.setupOnce.Do(s.disp.initialize)
 219         s.disp.queue = &test.Queue{}
 220         go s.disp.run()
 221
 222         type instance struct {
 223                 Instance             string
 224                 WorkerState          string `json:"worker_state"`
 225                 Price                float64
 226                 LastContainerUUID    string `json:"last_container_uuid"`
 227                 ArvadosInstanceType  string `json:"arvados_instance_type"`
 228                 ProviderInstanceType string `json:"provider_instance_type"`
 229         }
 230         type instancesResponse struct {
 231                 Items []instance
 232         }
 233         getInstances := func() instancesResponse {
 234                 req := httptest.NewRequest("GET", "/arvados/v1/dispatch/instances", nil)
 235                 req.Header.Set("Authorization", "Bearer abcdefgh")
 236                 resp := httptest.NewRecorder()
 237                 s.disp.ServeHTTP(resp, req)
 238                 var sr instancesResponse
 239                 c.Check(resp.Code, check.Equals, http.StatusOK)
 240                 err := json.Unmarshal(resp.Body.Bytes(), &sr)
 241                 c.Check(err, check.IsNil)
 242                 return sr
 243         }
 244
 245         sr := getInstances()
 246         c.Check(len(sr.Items), check.Equals, 0)
 247
 248         ch := s.disp.pool.Subscribe()
 249         defer s.disp.pool.Unsubscribe(ch)
 250         ok := s.disp.pool.Create(test.InstanceType(1))
 251         c.Check(ok, check.Equals, true)
 252         <-ch
 253
 254         sr = getInstances()
 255         c.Assert(len(sr.Items), check.Equals, 1)
 256         c.Check(sr.Items[0].Instance, check.Matches, "stub.*")
 257         c.Check(sr.Items[0].WorkerState, check.Equals, "booting")
 258         c.Check(sr.Items[0].Price, check.Equals, 0.123)
 259         c.Check(sr.Items[0].LastContainerUUID, check.Equals, "")
 260         c.Check(sr.Items[0].ProviderInstanceType, check.Equals, test.InstanceType(1).ProviderType)
 261         c.Check(sr.Items[0].ArvadosInstanceType, check.Equals, test.InstanceType(1).Name)
 262 }