sdk/go/keepclient/keepclient_test.go

   1 package keepclient
   2
   3 import (
   4         "crypto/md5"
   5         "flag"
   6         "fmt"
   7         "git.curoverse.com/arvados.git/sdk/go/arvadosclient"
   8         "git.curoverse.com/arvados.git/sdk/go/arvadostest"
   9         "git.curoverse.com/arvados.git/sdk/go/streamer"
  10         . "gopkg.in/check.v1"
  11         "io"
  12         "io/ioutil"
  13         "log"
  14         "net"
  15         "net/http"
  16         "os"
  17         "strings"
  18         "testing"
  19 )
  20
  21 // Gocheck boilerplate
  22 func Test(t *testing.T) {
  23         TestingT(t)
  24 }
  25
  26 // Gocheck boilerplate
  27 var _ = Suite(&ServerRequiredSuite{})
  28 var _ = Suite(&StandaloneSuite{})
  29
  30 var no_server = flag.Bool("no-server", false, "Skip 'ServerRequireSuite'")
  31
  32 // Tests that require the Keep server running
  33 type ServerRequiredSuite struct{}
  34
  35 // Standalone tests
  36 type StandaloneSuite struct{}
  37
  38 func pythonDir() string {
  39         cwd, _ := os.Getwd()
  40         return fmt.Sprintf("%s/../../python/tests", cwd)
  41 }
  42
  43 func (s *ServerRequiredSuite) SetUpSuite(c *C) {
  44         if *no_server {
  45                 c.Skip("Skipping tests that require server")
  46                 return
  47         }
  48         arvadostest.StartAPI()
  49         arvadostest.StartKeep(2, false)
  50 }
  51
  52 func (s *ServerRequiredSuite) TearDownSuite(c *C) {
  53         if *no_server {
  54                 return
  55         }
  56         arvadostest.StopKeep(2)
  57         arvadostest.StopAPI()
  58 }
  59
  60 func (s *ServerRequiredSuite) TestMakeKeepClient(c *C) {
  61         arv, err := arvadosclient.MakeArvadosClient()
  62         c.Assert(err, Equals, nil)
  63
  64         kc, err := MakeKeepClient(&arv)
  65
  66         c.Assert(err, Equals, nil)
  67         c.Check(len(kc.LocalRoots()), Equals, 2)
  68         for _, root := range kc.LocalRoots() {
  69                 c.Check(root, Matches, "http://localhost:\\d+")
  70         }
  71 }
  72
  73 func (s *ServerRequiredSuite) TestDefaultReplications(c *C) {
  74         arv, err := arvadosclient.MakeArvadosClient()
  75         c.Assert(err, Equals, nil)
  76
  77         kc, err := MakeKeepClient(&arv)
  78         c.Assert(kc.Want_replicas, Equals, 2)
  79
  80         arv.DiscoveryDoc["defaultCollectionReplication"] = 3.0
  81         kc, err = MakeKeepClient(&arv)
  82         c.Assert(kc.Want_replicas, Equals, 3)
  83
  84         arv.DiscoveryDoc["defaultCollectionReplication"] = 1.0
  85         kc, err = MakeKeepClient(&arv)
  86         c.Assert(kc.Want_replicas, Equals, 1)
  87 }
  88
  89 type StubPutHandler struct {
  90         c              *C
  91         expectPath     string
  92         expectApiToken string
  93         expectBody     string
  94         handled        chan string
  95 }
  96
  97 func (sph StubPutHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
  98         sph.c.Check(req.URL.Path, Equals, "/"+sph.expectPath)
  99         sph.c.Check(req.Header.Get("Authorization"), Equals, fmt.Sprintf("OAuth2 %s", sph.expectApiToken))
 100         body, err := ioutil.ReadAll(req.Body)
 101         sph.c.Check(err, Equals, nil)
 102         sph.c.Check(body, DeepEquals, []byte(sph.expectBody))
 103         resp.WriteHeader(200)
 104         sph.handled <- fmt.Sprintf("http://%s", req.Host)
 105 }
 106
 107 func RunFakeKeepServer(st http.Handler) (ks KeepServer) {
 108         var err error
 109         ks.listener, err = net.ListenTCP("tcp", &net.TCPAddr{Port: 0})
 110         if err != nil {
 111                 panic(fmt.Sprintf("Could not listen on any port"))
 112         }
 113         ks.url = fmt.Sprintf("http://%s", ks.listener.Addr().String())
 114         go http.Serve(ks.listener, st)
 115         return
 116 }
 117
 118 func UploadToStubHelper(c *C, st http.Handler, f func(*KeepClient, string,
 119         io.ReadCloser, io.WriteCloser, chan uploadStatus)) {
 120
 121         ks := RunFakeKeepServer(st)
 122         defer ks.listener.Close()
 123
 124         arv, _ := arvadosclient.MakeArvadosClient()
 125         arv.ApiToken = "abc123"
 126
 127         kc, _ := MakeKeepClient(&arv)
 128
 129         reader, writer := io.Pipe()
 130         upload_status := make(chan uploadStatus)
 131
 132         f(kc, ks.url, reader, writer, upload_status)
 133 }
 134
 135 func (s *StandaloneSuite) TestUploadToStubKeepServer(c *C) {
 136         log.Printf("TestUploadToStubKeepServer")
 137
 138         st := StubPutHandler{
 139                 c,
 140                 "acbd18db4cc2f85cedef654fccc4a4d8",
 141                 "abc123",
 142                 "foo",
 143                 make(chan string)}
 144
 145         UploadToStubHelper(c, st,
 146                 func(kc *KeepClient, url string, reader io.ReadCloser,
 147                         writer io.WriteCloser, upload_status chan uploadStatus) {
 148
 149                         go kc.uploadToKeepServer(url, st.expectPath, reader, upload_status, int64(len("foo")), "TestUploadToStubKeepServer")
 150
 151                         writer.Write([]byte("foo"))
 152                         writer.Close()
 153
 154                         <-st.handled
 155                         status := <-upload_status
 156                         c.Check(status, DeepEquals, uploadStatus{nil, fmt.Sprintf("%s/%s", url, st.expectPath), 200, 1, ""})
 157                 })
 158
 159         log.Printf("TestUploadToStubKeepServer done")
 160 }
 161
 162 func (s *StandaloneSuite) TestUploadToStubKeepServerBufferReader(c *C) {
 163         log.Printf("TestUploadToStubKeepServerBufferReader")
 164
 165         st := StubPutHandler{
 166                 c,
 167                 "acbd18db4cc2f85cedef654fccc4a4d8",
 168                 "abc123",
 169                 "foo",
 170                 make(chan string)}
 171
 172         UploadToStubHelper(c, st,
 173                 func(kc *KeepClient, url string, reader io.ReadCloser,
 174                         writer io.WriteCloser, upload_status chan uploadStatus) {
 175
 176                         tr := streamer.AsyncStreamFromReader(512, reader)
 177                         defer tr.Close()
 178
 179                         br1 := tr.MakeStreamReader()
 180
 181                         go kc.uploadToKeepServer(url, st.expectPath, br1, upload_status, 3, "TestUploadToStubKeepServerBufferReader")
 182
 183                         writer.Write([]byte("foo"))
 184                         writer.Close()
 185
 186                         <-st.handled
 187
 188                         status := <-upload_status
 189                         c.Check(status, DeepEquals, uploadStatus{nil, fmt.Sprintf("%s/%s", url, st.expectPath), 200, 1, ""})
 190                 })
 191
 192         log.Printf("TestUploadToStubKeepServerBufferReader done")
 193 }
 194
 195 type FailHandler struct {
 196         handled chan string
 197 }
 198
 199 func (fh FailHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
 200         resp.WriteHeader(500)
 201         fh.handled <- fmt.Sprintf("http://%s", req.Host)
 202 }
 203
 204 type FailThenSucceedHandler struct {
 205         handled        chan string
 206         count          int
 207         successhandler StubGetHandler
 208 }
 209
 210 func (fh *FailThenSucceedHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
 211         if fh.count == 0 {
 212                 resp.WriteHeader(500)
 213                 fh.count += 1
 214                 fh.handled <- fmt.Sprintf("http://%s", req.Host)
 215         } else {
 216                 fh.successhandler.ServeHTTP(resp, req)
 217         }
 218 }
 219
 220 type Error404Handler struct {
 221         handled chan string
 222 }
 223
 224 func (fh Error404Handler) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
 225         resp.WriteHeader(404)
 226         fh.handled <- fmt.Sprintf("http://%s", req.Host)
 227 }
 228
 229 func (s *StandaloneSuite) TestFailedUploadToStubKeepServer(c *C) {
 230         log.Printf("TestFailedUploadToStubKeepServer")
 231
 232         st := FailHandler{
 233                 make(chan string)}
 234
 235         hash := "acbd18db4cc2f85cedef654fccc4a4d8"
 236
 237         UploadToStubHelper(c, st,
 238                 func(kc *KeepClient, url string, reader io.ReadCloser,
 239                         writer io.WriteCloser, upload_status chan uploadStatus) {
 240
 241                         go kc.uploadToKeepServer(url, hash, reader, upload_status, 3, "TestFailedUploadToStubKeepServer")
 242
 243                         writer.Write([]byte("foo"))
 244                         writer.Close()
 245
 246                         <-st.handled
 247
 248                         status := <-upload_status
 249                         c.Check(status.url, Equals, fmt.Sprintf("%s/%s", url, hash))
 250                         c.Check(status.statusCode, Equals, 500)
 251                 })
 252         log.Printf("TestFailedUploadToStubKeepServer done")
 253 }
 254
 255 type KeepServer struct {
 256         listener net.Listener
 257         url      string
 258 }
 259
 260 func RunSomeFakeKeepServers(st http.Handler, n int) (ks []KeepServer) {
 261         ks = make([]KeepServer, n)
 262
 263         for i := 0; i < n; i += 1 {
 264                 ks[i] = RunFakeKeepServer(st)
 265         }
 266
 267         return ks
 268 }
 269
 270 func (s *StandaloneSuite) TestPutB(c *C) {
 271         log.Printf("TestPutB")
 272
 273         hash := Md5String("foo")
 274
 275         st := StubPutHandler{
 276                 c,
 277                 hash,
 278                 "abc123",
 279                 "foo",
 280                 make(chan string, 5)}
 281
 282         arv, _ := arvadosclient.MakeArvadosClient()
 283         kc, _ := MakeKeepClient(&arv)
 284
 285         kc.Want_replicas = 2
 286         arv.ApiToken = "abc123"
 287         localRoots := make(map[string]string)
 288         writableLocalRoots := make(map[string]string)
 289
 290         ks := RunSomeFakeKeepServers(st, 5)
 291
 292         for i, k := range ks {
 293                 localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 294                 writableLocalRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 295                 defer k.listener.Close()
 296         }
 297
 298         kc.SetServiceRoots(localRoots, writableLocalRoots, nil)
 299
 300         kc.PutB([]byte("foo"))
 301
 302         shuff := NewRootSorter(
 303                 kc.LocalRoots(), Md5String("foo")).GetSortedRoots()
 304
 305         s1 := <-st.handled
 306         s2 := <-st.handled
 307         c.Check((s1 == shuff[0] && s2 == shuff[1]) ||
 308                 (s1 == shuff[1] && s2 == shuff[0]),
 309                 Equals,
 310                 true)
 311
 312         log.Printf("TestPutB done")
 313 }
 314
 315 func (s *StandaloneSuite) TestPutHR(c *C) {
 316         log.Printf("TestPutHR")
 317
 318         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
 319
 320         st := StubPutHandler{
 321                 c,
 322                 hash,
 323                 "abc123",
 324                 "foo",
 325                 make(chan string, 5)}
 326
 327         arv, _ := arvadosclient.MakeArvadosClient()
 328         kc, _ := MakeKeepClient(&arv)
 329
 330         kc.Want_replicas = 2
 331         arv.ApiToken = "abc123"
 332         localRoots := make(map[string]string)
 333         writableLocalRoots := make(map[string]string)
 334
 335         ks := RunSomeFakeKeepServers(st, 5)
 336
 337         for i, k := range ks {
 338                 localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 339                 writableLocalRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 340                 defer k.listener.Close()
 341         }
 342
 343         kc.SetServiceRoots(localRoots, writableLocalRoots, nil)
 344
 345         reader, writer := io.Pipe()
 346
 347         go func() {
 348                 writer.Write([]byte("foo"))
 349                 writer.Close()
 350         }()
 351
 352         kc.PutHR(hash, reader, 3)
 353
 354         shuff := NewRootSorter(kc.LocalRoots(), hash).GetSortedRoots()
 355         log.Print(shuff)
 356
 357         s1 := <-st.handled
 358         s2 := <-st.handled
 359
 360         c.Check((s1 == shuff[0] && s2 == shuff[1]) ||
 361                 (s1 == shuff[1] && s2 == shuff[0]),
 362                 Equals,
 363                 true)
 364
 365         log.Printf("TestPutHR done")
 366 }
 367
 368 func (s *StandaloneSuite) TestPutWithFail(c *C) {
 369         log.Printf("TestPutWithFail")
 370
 371         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
 372
 373         st := StubPutHandler{
 374                 c,
 375                 hash,
 376                 "abc123",
 377                 "foo",
 378                 make(chan string, 4)}
 379
 380         fh := FailHandler{
 381                 make(chan string, 1)}
 382
 383         arv, err := arvadosclient.MakeArvadosClient()
 384         kc, _ := MakeKeepClient(&arv)
 385
 386         kc.Want_replicas = 2
 387         arv.ApiToken = "abc123"
 388         localRoots := make(map[string]string)
 389         writableLocalRoots := make(map[string]string)
 390
 391         ks1 := RunSomeFakeKeepServers(st, 4)
 392         ks2 := RunSomeFakeKeepServers(fh, 1)
 393
 394         for i, k := range ks1 {
 395                 localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 396                 writableLocalRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 397                 defer k.listener.Close()
 398         }
 399         for i, k := range ks2 {
 400                 localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i+len(ks1))] = k.url
 401                 writableLocalRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i+len(ks1))] = k.url
 402                 defer k.listener.Close()
 403         }
 404
 405         kc.SetServiceRoots(localRoots, writableLocalRoots, nil)
 406
 407         shuff := NewRootSorter(
 408                 kc.LocalRoots(), Md5String("foo")).GetSortedRoots()
 409
 410         phash, replicas, err := kc.PutB([]byte("foo"))
 411
 412         <-fh.handled
 413
 414         c.Check(err, Equals, nil)
 415         c.Check(phash, Equals, "")
 416         c.Check(replicas, Equals, 2)
 417
 418         s1 := <-st.handled
 419         s2 := <-st.handled
 420
 421         c.Check((s1 == shuff[1] && s2 == shuff[2]) ||
 422                 (s1 == shuff[2] && s2 == shuff[1]),
 423                 Equals,
 424                 true)
 425 }
 426
 427 func (s *StandaloneSuite) TestPutWithTooManyFail(c *C) {
 428         log.Printf("TestPutWithTooManyFail")
 429
 430         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
 431
 432         st := StubPutHandler{
 433                 c,
 434                 hash,
 435                 "abc123",
 436                 "foo",
 437                 make(chan string, 1)}
 438
 439         fh := FailHandler{
 440                 make(chan string, 4)}
 441
 442         arv, err := arvadosclient.MakeArvadosClient()
 443         kc, _ := MakeKeepClient(&arv)
 444
 445         kc.Want_replicas = 2
 446         arv.ApiToken = "abc123"
 447         localRoots := make(map[string]string)
 448         writableLocalRoots := make(map[string]string)
 449
 450         ks1 := RunSomeFakeKeepServers(st, 1)
 451         ks2 := RunSomeFakeKeepServers(fh, 4)
 452
 453         for i, k := range ks1 {
 454                 localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 455                 writableLocalRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 456                 defer k.listener.Close()
 457         }
 458         for i, k := range ks2 {
 459                 localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i+len(ks1))] = k.url
 460                 writableLocalRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i+len(ks1))] = k.url
 461                 defer k.listener.Close()
 462         }
 463
 464         kc.SetServiceRoots(localRoots, writableLocalRoots, nil)
 465
 466         _, replicas, err := kc.PutB([]byte("foo"))
 467
 468         c.Check(err, Equals, InsufficientReplicasError)
 469         c.Check(replicas, Equals, 1)
 470         c.Check(<-st.handled, Equals, ks1[0].url)
 471
 472         log.Printf("TestPutWithTooManyFail done")
 473 }
 474
 475 type StubGetHandler struct {
 476         c              *C
 477         expectPath     string
 478         expectApiToken string
 479         httpStatus     int
 480         body           []byte
 481 }
 482
 483 func (sgh StubGetHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
 484         sgh.c.Check(req.URL.Path, Equals, "/"+sgh.expectPath)
 485         sgh.c.Check(req.Header.Get("Authorization"), Equals, fmt.Sprintf("OAuth2 %s", sgh.expectApiToken))
 486         resp.WriteHeader(sgh.httpStatus)
 487         resp.Header().Set("Content-Length", fmt.Sprintf("%d", len(sgh.body)))
 488         resp.Write(sgh.body)
 489 }
 490
 491 func (s *StandaloneSuite) TestGet(c *C) {
 492         log.Printf("TestGet")
 493
 494         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
 495
 496         st := StubGetHandler{
 497                 c,
 498                 hash,
 499                 "abc123",
 500                 http.StatusOK,
 501                 []byte("foo")}
 502
 503         ks := RunFakeKeepServer(st)
 504         defer ks.listener.Close()
 505
 506         arv, err := arvadosclient.MakeArvadosClient()
 507         kc, _ := MakeKeepClient(&arv)
 508         arv.ApiToken = "abc123"
 509         kc.SetServiceRoots(map[string]string{"x": ks.url}, nil, nil)
 510
 511         r, n, url2, err := kc.Get(hash)
 512         defer r.Close()
 513         c.Check(err, Equals, nil)
 514         c.Check(n, Equals, int64(3))
 515         c.Check(url2, Equals, fmt.Sprintf("%s/%s", ks.url, hash))
 516
 517         content, err2 := ioutil.ReadAll(r)
 518         c.Check(err2, Equals, nil)
 519         c.Check(content, DeepEquals, []byte("foo"))
 520
 521         log.Printf("TestGet done")
 522 }
 523
 524 func (s *StandaloneSuite) TestGet404(c *C) {
 525         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
 526
 527         st := Error404Handler{make(chan string, 1)}
 528
 529         ks := RunFakeKeepServer(st)
 530         defer ks.listener.Close()
 531
 532         arv, err := arvadosclient.MakeArvadosClient()
 533         kc, _ := MakeKeepClient(&arv)
 534         arv.ApiToken = "abc123"
 535         kc.SetServiceRoots(map[string]string{"x": ks.url}, nil, nil)
 536
 537         r, n, url2, err := kc.Get(hash)
 538         c.Check(err, Equals, BlockNotFound)
 539         c.Check(n, Equals, int64(0))
 540         c.Check(url2, Equals, "")
 541         c.Check(r, Equals, nil)
 542 }
 543
 544 func (s *StandaloneSuite) TestGetFail(c *C) {
 545         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
 546
 547         st := FailHandler{make(chan string, 1)}
 548
 549         ks := RunFakeKeepServer(st)
 550         defer ks.listener.Close()
 551
 552         arv, err := arvadosclient.MakeArvadosClient()
 553         kc, _ := MakeKeepClient(&arv)
 554         arv.ApiToken = "abc123"
 555         kc.SetServiceRoots(map[string]string{"x": ks.url}, nil, nil)
 556
 557         r, n, url2, err := kc.Get(hash)
 558         errNotFound, _ := err.(ErrNotFound)
 559         c.Check(errNotFound, NotNil)
 560         c.Check(strings.Contains(err.Error(), "use of closed network connection"), Equals, true)
 561         c.Check(n, Equals, int64(0))
 562         c.Check(url2, Equals, "")
 563         c.Check(r, Equals, nil)
 564 }
 565
 566 func (s *StandaloneSuite) TestGetFailRetry(c *C) {
 567         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
 568
 569         st := &FailThenSucceedHandler{make(chan string, 1), 0,
 570                 StubGetHandler{
 571                         c,
 572                         hash,
 573                         "abc123",
 574                         http.StatusOK,
 575                         []byte("foo")}}
 576
 577         ks := RunFakeKeepServer(st)
 578         defer ks.listener.Close()
 579
 580         arv, err := arvadosclient.MakeArvadosClient()
 581         kc, _ := MakeKeepClient(&arv)
 582         arv.ApiToken = "abc123"
 583         kc.SetServiceRoots(map[string]string{"x": ks.url}, nil, nil)
 584
 585         r, n, url2, err := kc.Get(hash)
 586         defer r.Close()
 587         c.Check(err, Equals, nil)
 588         c.Check(n, Equals, int64(3))
 589         c.Check(url2, Equals, fmt.Sprintf("%s/%s", ks.url, hash))
 590
 591         content, err2 := ioutil.ReadAll(r)
 592         c.Check(err2, Equals, nil)
 593         c.Check(content, DeepEquals, []byte("foo"))
 594 }
 595
 596 func (s *StandaloneSuite) TestGetNetError(c *C) {
 597         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
 598
 599         arv, err := arvadosclient.MakeArvadosClient()
 600         kc, _ := MakeKeepClient(&arv)
 601         arv.ApiToken = "abc123"
 602         kc.SetServiceRoots(map[string]string{"x": "http://localhost:62222"}, nil, nil)
 603
 604         r, n, url2, err := kc.Get(hash)
 605         errNotFound, _ := err.(ErrNotFound)
 606         c.Check(errNotFound, NotNil)
 607         c.Check(strings.Contains(err.Error(), "connection refused"), Equals, true)
 608         c.Check(n, Equals, int64(0))
 609         c.Check(url2, Equals, "")
 610         c.Check(r, Equals, nil)
 611 }
 612
 613 func (s *StandaloneSuite) TestGetWithServiceHint(c *C) {
 614         uuid := "zzzzz-bi6l4-123451234512345"
 615         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
 616
 617         // This one shouldn't be used:
 618         ks0 := RunFakeKeepServer(StubGetHandler{
 619                 c,
 620                 "error if used",
 621                 "abc123",
 622                 http.StatusOK,
 623                 []byte("foo")})
 624         defer ks0.listener.Close()
 625         // This one should be used:
 626         ks := RunFakeKeepServer(StubGetHandler{
 627                 c,
 628                 hash + "+K@" + uuid,
 629                 "abc123",
 630                 http.StatusOK,
 631                 []byte("foo")})
 632         defer ks.listener.Close()
 633
 634         arv, err := arvadosclient.MakeArvadosClient()
 635         kc, _ := MakeKeepClient(&arv)
 636         arv.ApiToken = "abc123"
 637         kc.SetServiceRoots(
 638                 map[string]string{"x": ks0.url},
 639                 nil,
 640                 map[string]string{uuid: ks.url})
 641
 642         r, n, uri, err := kc.Get(hash + "+K@" + uuid)
 643         defer r.Close()
 644         c.Check(err, Equals, nil)
 645         c.Check(n, Equals, int64(3))
 646         c.Check(uri, Equals, fmt.Sprintf("%s/%s", ks.url, hash+"+K@"+uuid))
 647
 648         content, err := ioutil.ReadAll(r)
 649         c.Check(err, Equals, nil)
 650         c.Check(content, DeepEquals, []byte("foo"))
 651 }
 652
 653 // Use a service hint to fetch from a local disk service, overriding
 654 // rendezvous probe order.
 655 func (s *StandaloneSuite) TestGetWithLocalServiceHint(c *C) {
 656         uuid := "zzzzz-bi6l4-zzzzzzzzzzzzzzz"
 657         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
 658
 659         // This one shouldn't be used, although it appears first in
 660         // rendezvous probe order:
 661         ks0 := RunFakeKeepServer(StubGetHandler{
 662                 c,
 663                 "error if used",
 664                 "abc123",
 665                 http.StatusOK,
 666                 []byte("foo")})
 667         defer ks0.listener.Close()
 668         // This one should be used:
 669         ks := RunFakeKeepServer(StubGetHandler{
 670                 c,
 671                 hash + "+K@" + uuid,
 672                 "abc123",
 673                 http.StatusOK,
 674                 []byte("foo")})
 675         defer ks.listener.Close()
 676
 677         arv, err := arvadosclient.MakeArvadosClient()
 678         kc, _ := MakeKeepClient(&arv)
 679         arv.ApiToken = "abc123"
 680         kc.SetServiceRoots(
 681                 map[string]string{
 682                         "zzzzz-bi6l4-yyyyyyyyyyyyyyy": ks0.url,
 683                         "zzzzz-bi6l4-xxxxxxxxxxxxxxx": ks0.url,
 684                         "zzzzz-bi6l4-wwwwwwwwwwwwwww": ks0.url,
 685                         uuid: ks.url},
 686                 nil,
 687                 map[string]string{
 688                         "zzzzz-bi6l4-yyyyyyyyyyyyyyy": ks0.url,
 689                         "zzzzz-bi6l4-xxxxxxxxxxxxxxx": ks0.url,
 690                         "zzzzz-bi6l4-wwwwwwwwwwwwwww": ks0.url,
 691                         uuid: ks.url},
 692         )
 693
 694         r, n, uri, err := kc.Get(hash + "+K@" + uuid)
 695         defer r.Close()
 696         c.Check(err, Equals, nil)
 697         c.Check(n, Equals, int64(3))
 698         c.Check(uri, Equals, fmt.Sprintf("%s/%s", ks.url, hash+"+K@"+uuid))
 699
 700         content, err := ioutil.ReadAll(r)
 701         c.Check(err, Equals, nil)
 702         c.Check(content, DeepEquals, []byte("foo"))
 703 }
 704
 705 func (s *StandaloneSuite) TestGetWithServiceHintFailoverToLocals(c *C) {
 706         uuid := "zzzzz-bi6l4-123451234512345"
 707         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
 708
 709         ksLocal := RunFakeKeepServer(StubGetHandler{
 710                 c,
 711                 hash + "+K@" + uuid,
 712                 "abc123",
 713                 http.StatusOK,
 714                 []byte("foo")})
 715         defer ksLocal.listener.Close()
 716         ksGateway := RunFakeKeepServer(StubGetHandler{
 717                 c,
 718                 hash + "+K@" + uuid,
 719                 "abc123",
 720                 http.StatusInternalServerError,
 721                 []byte("Error")})
 722         defer ksGateway.listener.Close()
 723
 724         arv, err := arvadosclient.MakeArvadosClient()
 725         kc, _ := MakeKeepClient(&arv)
 726         arv.ApiToken = "abc123"
 727         kc.SetServiceRoots(
 728                 map[string]string{"zzzzz-bi6l4-keepdisk0000000": ksLocal.url},
 729                 nil,
 730                 map[string]string{uuid: ksGateway.url})
 731
 732         r, n, uri, err := kc.Get(hash + "+K@" + uuid)
 733         c.Assert(err, Equals, nil)
 734         defer r.Close()
 735         c.Check(n, Equals, int64(3))
 736         c.Check(uri, Equals, fmt.Sprintf("%s/%s", ksLocal.url, hash+"+K@"+uuid))
 737
 738         content, err := ioutil.ReadAll(r)
 739         c.Check(err, Equals, nil)
 740         c.Check(content, DeepEquals, []byte("foo"))
 741 }
 742
 743 type BarHandler struct {
 744         handled chan string
 745 }
 746
 747 func (this BarHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
 748         resp.Write([]byte("bar"))
 749         this.handled <- fmt.Sprintf("http://%s", req.Host)
 750 }
 751
 752 func (s *StandaloneSuite) TestChecksum(c *C) {
 753         foohash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
 754         barhash := fmt.Sprintf("%x", md5.Sum([]byte("bar")))
 755
 756         st := BarHandler{make(chan string, 1)}
 757
 758         ks := RunFakeKeepServer(st)
 759         defer ks.listener.Close()
 760
 761         arv, err := arvadosclient.MakeArvadosClient()
 762         kc, _ := MakeKeepClient(&arv)
 763         arv.ApiToken = "abc123"
 764         kc.SetServiceRoots(map[string]string{"x": ks.url}, nil, nil)
 765
 766         r, n, _, err := kc.Get(barhash)
 767         _, err = ioutil.ReadAll(r)
 768         c.Check(n, Equals, int64(3))
 769         c.Check(err, Equals, nil)
 770
 771         <-st.handled
 772
 773         r, n, _, err = kc.Get(foohash)
 774         _, err = ioutil.ReadAll(r)
 775         c.Check(n, Equals, int64(3))
 776         c.Check(err, Equals, BadChecksum)
 777
 778         <-st.handled
 779 }
 780
 781 func (s *StandaloneSuite) TestGetWithFailures(c *C) {
 782         content := []byte("waz")
 783         hash := fmt.Sprintf("%x", md5.Sum(content))
 784
 785         fh := Error404Handler{
 786                 make(chan string, 4)}
 787
 788         st := StubGetHandler{
 789                 c,
 790                 hash,
 791                 "abc123",
 792                 http.StatusOK,
 793                 content}
 794
 795         arv, err := arvadosclient.MakeArvadosClient()
 796         kc, _ := MakeKeepClient(&arv)
 797         arv.ApiToken = "abc123"
 798         localRoots := make(map[string]string)
 799         writableLocalRoots := make(map[string]string)
 800
 801         ks1 := RunSomeFakeKeepServers(st, 1)
 802         ks2 := RunSomeFakeKeepServers(fh, 4)
 803
 804         for i, k := range ks1 {
 805                 localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 806                 writableLocalRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 807                 defer k.listener.Close()
 808         }
 809         for i, k := range ks2 {
 810                 localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i+len(ks1))] = k.url
 811                 writableLocalRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i+len(ks1))] = k.url
 812                 defer k.listener.Close()
 813         }
 814
 815         kc.SetServiceRoots(localRoots, writableLocalRoots, nil)
 816
 817         // This test works only if one of the failing services is
 818         // attempted before the succeeding service. Otherwise,
 819         // <-fh.handled below will just hang! (Probe order depends on
 820         // the choice of block content "waz" and the UUIDs of the fake
 821         // servers, so we just tried different strings until we found
 822         // an example that passes this Assert.)
 823         c.Assert(NewRootSorter(localRoots, hash).GetSortedRoots()[0], Not(Equals), ks1[0].url)
 824
 825         r, n, url2, err := kc.Get(hash)
 826
 827         <-fh.handled
 828         c.Check(err, Equals, nil)
 829         c.Check(n, Equals, int64(3))
 830         c.Check(url2, Equals, fmt.Sprintf("%s/%s", ks1[0].url, hash))
 831
 832         read_content, err2 := ioutil.ReadAll(r)
 833         c.Check(err2, Equals, nil)
 834         c.Check(read_content, DeepEquals, content)
 835 }
 836
 837 func (s *ServerRequiredSuite) TestPutGetHead(c *C) {
 838         content := []byte("TestPutGetHead")
 839
 840         arv, err := arvadosclient.MakeArvadosClient()
 841         kc, err := MakeKeepClient(&arv)
 842         c.Assert(err, Equals, nil)
 843
 844         hash := fmt.Sprintf("%x", md5.Sum(content))
 845
 846         {
 847                 n, _, err := kc.Ask(hash)
 848                 c.Check(err, Equals, BlockNotFound)
 849                 c.Check(n, Equals, int64(0))
 850         }
 851         {
 852                 hash2, replicas, err := kc.PutB(content)
 853                 c.Check(hash2, Matches, fmt.Sprintf(`%s\+%d\b.*`, hash, len(content)))
 854                 c.Check(replicas, Equals, 2)
 855                 c.Check(err, Equals, nil)
 856         }
 857         {
 858                 r, n, url2, err := kc.Get(hash)
 859                 c.Check(err, Equals, nil)
 860                 c.Check(n, Equals, int64(len(content)))
 861                 c.Check(url2, Matches, fmt.Sprintf("http://localhost:\\d+/%s", hash))
 862
 863                 read_content, err2 := ioutil.ReadAll(r)
 864                 c.Check(err2, Equals, nil)
 865                 c.Check(read_content, DeepEquals, content)
 866         }
 867         {
 868                 n, url2, err := kc.Ask(hash)
 869                 c.Check(err, Equals, nil)
 870                 c.Check(n, Equals, int64(len(content)))
 871                 c.Check(url2, Matches, fmt.Sprintf("http://localhost:\\d+/%s", hash))
 872         }
 873 }
 874
 875 type StubProxyHandler struct {
 876         handled chan string
 877 }
 878
 879 func (this StubProxyHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
 880         resp.Header().Set("X-Keep-Replicas-Stored", "2")
 881         this.handled <- fmt.Sprintf("http://%s", req.Host)
 882 }
 883
 884 func (s *StandaloneSuite) TestPutProxy(c *C) {
 885         log.Printf("TestPutProxy")
 886
 887         st := StubProxyHandler{make(chan string, 1)}
 888
 889         arv, err := arvadosclient.MakeArvadosClient()
 890         kc, _ := MakeKeepClient(&arv)
 891
 892         kc.Want_replicas = 2
 893         kc.Using_proxy = true
 894         arv.ApiToken = "abc123"
 895         localRoots := make(map[string]string)
 896         writableLocalRoots := make(map[string]string)
 897
 898         ks1 := RunSomeFakeKeepServers(st, 1)
 899
 900         for i, k := range ks1 {
 901                 localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 902                 writableLocalRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 903                 defer k.listener.Close()
 904         }
 905
 906         kc.SetServiceRoots(localRoots, writableLocalRoots, nil)
 907
 908         _, replicas, err := kc.PutB([]byte("foo"))
 909         <-st.handled
 910
 911         c.Check(err, Equals, nil)
 912         c.Check(replicas, Equals, 2)
 913
 914         log.Printf("TestPutProxy done")
 915 }
 916
 917 func (s *StandaloneSuite) TestPutProxyInsufficientReplicas(c *C) {
 918         log.Printf("TestPutProxy")
 919
 920         st := StubProxyHandler{make(chan string, 1)}
 921
 922         arv, err := arvadosclient.MakeArvadosClient()
 923         kc, _ := MakeKeepClient(&arv)
 924
 925         kc.Want_replicas = 3
 926         kc.Using_proxy = true
 927         arv.ApiToken = "abc123"
 928         localRoots := make(map[string]string)
 929         writableLocalRoots := make(map[string]string)
 930
 931         ks1 := RunSomeFakeKeepServers(st, 1)
 932
 933         for i, k := range ks1 {
 934                 localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 935                 writableLocalRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
 936                 defer k.listener.Close()
 937         }
 938         kc.SetServiceRoots(localRoots, writableLocalRoots, nil)
 939
 940         _, replicas, err := kc.PutB([]byte("foo"))
 941         <-st.handled
 942
 943         c.Check(err, Equals, InsufficientReplicasError)
 944         c.Check(replicas, Equals, 2)
 945
 946         log.Printf("TestPutProxy done")
 947 }
 948
 949 func (s *StandaloneSuite) TestMakeLocator(c *C) {
 950         l, err := MakeLocator("91f372a266fe2bf2823cb8ec7fda31ce+3+Aabcde@12345678")
 951         c.Check(err, Equals, nil)
 952         c.Check(l.Hash, Equals, "91f372a266fe2bf2823cb8ec7fda31ce")
 953         c.Check(l.Size, Equals, 3)
 954         c.Check(l.Hints, DeepEquals, []string{"3", "Aabcde@12345678"})
 955 }
 956
 957 func (s *StandaloneSuite) TestMakeLocatorNoHints(c *C) {
 958         l, err := MakeLocator("91f372a266fe2bf2823cb8ec7fda31ce")
 959         c.Check(err, Equals, nil)
 960         c.Check(l.Hash, Equals, "91f372a266fe2bf2823cb8ec7fda31ce")
 961         c.Check(l.Size, Equals, -1)
 962         c.Check(l.Hints, DeepEquals, []string{})
 963 }
 964
 965 func (s *StandaloneSuite) TestMakeLocatorNoSizeHint(c *C) {
 966         l, err := MakeLocator("91f372a266fe2bf2823cb8ec7fda31ce+Aabcde@12345678")
 967         c.Check(err, Equals, nil)
 968         c.Check(l.Hash, Equals, "91f372a266fe2bf2823cb8ec7fda31ce")
 969         c.Check(l.Size, Equals, -1)
 970         c.Check(l.Hints, DeepEquals, []string{"Aabcde@12345678"})
 971 }
 972
 973 func (s *StandaloneSuite) TestMakeLocatorPreservesUnrecognizedHints(c *C) {
 974         str := "91f372a266fe2bf2823cb8ec7fda31ce+3+Unknown+Kzzzzz+Afoobar"
 975         l, err := MakeLocator(str)
 976         c.Check(err, Equals, nil)
 977         c.Check(l.Hash, Equals, "91f372a266fe2bf2823cb8ec7fda31ce")
 978         c.Check(l.Size, Equals, 3)
 979         c.Check(l.Hints, DeepEquals, []string{"3", "Unknown", "Kzzzzz", "Afoobar"})
 980         c.Check(l.String(), Equals, str)
 981 }
 982
 983 func (s *StandaloneSuite) TestMakeLocatorInvalidInput(c *C) {
 984         _, err := MakeLocator("91f372a266fe2bf2823cb8ec7fda31c")
 985         c.Check(err, Equals, InvalidLocatorError)
 986 }
 987
 988 func (s *StandaloneSuite) TestPutBWant2ReplicasWithOnlyOneWritableLocalRoot(c *C) {
 989         hash := Md5String("foo")
 990
 991         st := StubPutHandler{
 992                 c,
 993                 hash,
 994                 "abc123",
 995                 "foo",
 996                 make(chan string, 5)}
 997
 998         arv, _ := arvadosclient.MakeArvadosClient()
 999         kc, _ := MakeKeepClient(&arv)
1000
1001         kc.Want_replicas = 2
1002         arv.ApiToken = "abc123"
1003         localRoots := make(map[string]string)
1004         writableLocalRoots := make(map[string]string)
1005
1006         ks := RunSomeFakeKeepServers(st, 5)
1007
1008         for i, k := range ks {
1009                 localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
1010                 if i == 0 {
1011                         writableLocalRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
1012                 }
1013                 defer k.listener.Close()
1014         }
1015
1016         kc.SetServiceRoots(localRoots, writableLocalRoots, nil)
1017
1018         _, replicas, err := kc.PutB([]byte("foo"))
1019
1020         c.Check(err, Equals, InsufficientReplicasError)
1021         c.Check(replicas, Equals, 1)
1022
1023         c.Check(<-st.handled, Equals, localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", 0)])
1024 }
1025
1026 func (s *StandaloneSuite) TestPutBWithNoWritableLocalRoots(c *C) {
1027         hash := Md5String("foo")
1028
1029         st := StubPutHandler{
1030                 c,
1031                 hash,
1032                 "abc123",
1033                 "foo",
1034                 make(chan string, 5)}
1035
1036         arv, _ := arvadosclient.MakeArvadosClient()
1037         kc, _ := MakeKeepClient(&arv)
1038
1039         kc.Want_replicas = 2
1040         arv.ApiToken = "abc123"
1041         localRoots := make(map[string]string)
1042         writableLocalRoots := make(map[string]string)
1043
1044         ks := RunSomeFakeKeepServers(st, 5)
1045
1046         for i, k := range ks {
1047                 localRoots[fmt.Sprintf("zzzzz-bi6l4-fakefakefake%03d", i)] = k.url
1048                 defer k.listener.Close()
1049         }
1050
1051         kc.SetServiceRoots(localRoots, writableLocalRoots, nil)
1052
1053         _, replicas, err := kc.PutB([]byte("foo"))
1054
1055         c.Check(err, Equals, InsufficientReplicasError)
1056         c.Check(replicas, Equals, 0)
1057 }
1058
1059 type StubGetIndexHandler struct {
1060         c              *C
1061         expectPath     string
1062         expectAPIToken string
1063         httpStatus     int
1064         body           []byte
1065 }
1066
1067 func (h StubGetIndexHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
1068         h.c.Check(req.URL.Path, Equals, h.expectPath)
1069         h.c.Check(req.Header.Get("Authorization"), Equals, fmt.Sprintf("OAuth2 %s", h.expectAPIToken))
1070         resp.WriteHeader(h.httpStatus)
1071         resp.Header().Set("Content-Length", fmt.Sprintf("%d", len(h.body)))
1072         resp.Write(h.body)
1073 }
1074
1075 func (s *StandaloneSuite) TestGetIndexWithNoPrefix(c *C) {
1076         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
1077
1078         st := StubGetIndexHandler{
1079                 c,
1080                 "/index",
1081                 "abc123",
1082                 http.StatusOK,
1083                 []byte(hash + "+3 1443559274\n\n")}
1084
1085         ks := RunFakeKeepServer(st)
1086         defer ks.listener.Close()
1087
1088         arv, err := arvadosclient.MakeArvadosClient()
1089         kc, _ := MakeKeepClient(&arv)
1090         arv.ApiToken = "abc123"
1091         kc.SetServiceRoots(map[string]string{"x": ks.url}, nil, nil)
1092
1093         r, err := kc.GetIndex("x", "")
1094         c.Check(err, Equals, nil)
1095
1096         content, err2 := ioutil.ReadAll(r)
1097         c.Check(err2, Equals, nil)
1098         c.Check(content, DeepEquals, st.body[0:len(st.body)-1])
1099 }
1100
1101 func (s *StandaloneSuite) TestGetIndexWithPrefix(c *C) {
1102         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
1103
1104         st := StubGetIndexHandler{
1105                 c,
1106                 "/index/" + hash[0:3],
1107                 "abc123",
1108                 http.StatusOK,
1109                 []byte(hash + "+3 1443559274\n\n")}
1110
1111         ks := RunFakeKeepServer(st)
1112         defer ks.listener.Close()
1113
1114         arv, err := arvadosclient.MakeArvadosClient()
1115         kc, _ := MakeKeepClient(&arv)
1116         arv.ApiToken = "abc123"
1117         kc.SetServiceRoots(map[string]string{"x": ks.url}, nil, nil)
1118
1119         r, err := kc.GetIndex("x", hash[0:3])
1120         c.Check(err, Equals, nil)
1121
1122         content, err2 := ioutil.ReadAll(r)
1123         c.Check(err2, Equals, nil)
1124         c.Check(content, DeepEquals, st.body[0:len(st.body)-1])
1125 }
1126
1127 func (s *StandaloneSuite) TestGetIndexIncomplete(c *C) {
1128         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
1129
1130         st := StubGetIndexHandler{
1131                 c,
1132                 "/index/" + hash[0:3],
1133                 "abc123",
1134                 http.StatusOK,
1135                 []byte(hash)}
1136
1137         ks := RunFakeKeepServer(st)
1138         defer ks.listener.Close()
1139
1140         arv, err := arvadosclient.MakeArvadosClient()
1141         kc, _ := MakeKeepClient(&arv)
1142         arv.ApiToken = "abc123"
1143         kc.SetServiceRoots(map[string]string{"x": ks.url}, nil, nil)
1144
1145         _, err = kc.GetIndex("x", hash[0:3])
1146         c.Check(err, Equals, ErrIncompleteIndex)
1147 }
1148
1149 func (s *StandaloneSuite) TestGetIndexWithNoSuchServer(c *C) {
1150         hash := fmt.Sprintf("%x", md5.Sum([]byte("foo")))
1151
1152         st := StubGetIndexHandler{
1153                 c,
1154                 "/index/" + hash[0:3],
1155                 "abc123",
1156                 http.StatusOK,
1157                 []byte(hash)}
1158
1159         ks := RunFakeKeepServer(st)
1160         defer ks.listener.Close()
1161
1162         arv, err := arvadosclient.MakeArvadosClient()
1163         kc, _ := MakeKeepClient(&arv)
1164         arv.ApiToken = "abc123"
1165         kc.SetServiceRoots(map[string]string{"x": ks.url}, nil, nil)
1166
1167         _, err = kc.GetIndex("y", hash[0:3])
1168         c.Check(err, Equals, ErrNoSuchKeepServer)
1169 }
1170
1171 func (s *StandaloneSuite) TestGetIndexWithNoSuchPrefix(c *C) {
1172         st := StubGetIndexHandler{
1173                 c,
1174                 "/index/abcd",
1175                 "abc123",
1176                 http.StatusOK,
1177                 []byte("\n")}
1178
1179         ks := RunFakeKeepServer(st)
1180         defer ks.listener.Close()
1181
1182         arv, err := arvadosclient.MakeArvadosClient()
1183         kc, _ := MakeKeepClient(&arv)
1184         arv.ApiToken = "abc123"
1185         kc.SetServiceRoots(map[string]string{"x": ks.url}, nil, nil)
1186
1187         r, err := kc.GetIndex("x", "abcd")
1188         c.Check(err, Equals, nil)
1189
1190         content, err2 := ioutil.ReadAll(r)
1191         c.Check(err2, Equals, nil)
1192         c.Check(content, DeepEquals, st.body[0:len(st.body)-1])
1193 }