services/keepstore/handler_test.go

   1 // Tests for Keep HTTP handlers:
   2 //
   3 //     GetBlockHandler
   4 //     PutBlockHandler
   5 //     IndexHandler
   6 //
   7 // The HTTP handlers are responsible for enforcing permission policy,
   8 // so these tests must exercise all possible permission permutations.
   9
  10 package main
  11
  12 import (
  13         "bytes"
  14         "encoding/json"
  15         "fmt"
  16         "net/http"
  17         "net/http/httptest"
  18         "os"
  19         "regexp"
  20         "strings"
  21         "testing"
  22         "time"
  23 )
  24
  25 // A RequestTester represents the parameters for an HTTP request to
  26 // be issued on behalf of a unit test.
  27 type RequestTester struct {
  28         uri         string
  29         apiToken    string
  30         method      string
  31         requestBody []byte
  32 }
  33
  34 // Test GetBlockHandler on the following situations:
  35 //   - permissions off, unauthenticated request, unsigned locator
  36 //   - permissions on, authenticated request, signed locator
  37 //   - permissions on, authenticated request, unsigned locator
  38 //   - permissions on, unauthenticated request, signed locator
  39 //   - permissions on, authenticated request, expired locator
  40 //
  41 func TestGetHandler(t *testing.T) {
  42         defer teardown()
  43
  44         // Prepare two test Keep volumes. Our block is stored on the second volume.
  45         KeepVM = MakeTestVolumeManager(2)
  46         defer KeepVM.Close()
  47
  48         vols := KeepVM.AllWritable()
  49         if err := vols[0].Put(TEST_HASH, TEST_BLOCK); err != nil {
  50                 t.Error(err)
  51         }
  52
  53         // Create locators for testing.
  54         // Turn on permission settings so we can generate signed locators.
  55         enforcePermissions = true
  56         PermissionSecret = []byte(known_key)
  57         blob_signature_ttl = 300 * time.Second
  58
  59         var (
  60                 unsignedLocator  = "/" + TEST_HASH
  61                 validTimestamp   = time.Now().Add(blob_signature_ttl)
  62                 expiredTimestamp = time.Now().Add(-time.Hour)
  63                 signedLocator    = "/" + SignLocator(TEST_HASH, known_token, validTimestamp)
  64                 expiredLocator   = "/" + SignLocator(TEST_HASH, known_token, expiredTimestamp)
  65         )
  66
  67         // -----------------
  68         // Test unauthenticated request with permissions off.
  69         enforcePermissions = false
  70
  71         // Unauthenticated request, unsigned locator
  72         // => OK
  73         response := IssueRequest(
  74                 &RequestTester{
  75                         method: "GET",
  76                         uri:    unsignedLocator,
  77                 })
  78         ExpectStatusCode(t,
  79                 "Unauthenticated request, unsigned locator", http.StatusOK, response)
  80         ExpectBody(t,
  81                 "Unauthenticated request, unsigned locator",
  82                 string(TEST_BLOCK),
  83                 response)
  84
  85         receivedLen := response.Header().Get("Content-Length")
  86         expectedLen := fmt.Sprintf("%d", len(TEST_BLOCK))
  87         if receivedLen != expectedLen {
  88                 t.Errorf("expected Content-Length %s, got %s", expectedLen, receivedLen)
  89         }
  90
  91         // ----------------
  92         // Permissions: on.
  93         enforcePermissions = true
  94
  95         // Authenticated request, signed locator
  96         // => OK
  97         response = IssueRequest(&RequestTester{
  98                 method:   "GET",
  99                 uri:      signedLocator,
 100                 apiToken: known_token,
 101         })
 102         ExpectStatusCode(t,
 103                 "Authenticated request, signed locator", http.StatusOK, response)
 104         ExpectBody(t,
 105                 "Authenticated request, signed locator", string(TEST_BLOCK), response)
 106
 107         receivedLen = response.Header().Get("Content-Length")
 108         expectedLen = fmt.Sprintf("%d", len(TEST_BLOCK))
 109         if receivedLen != expectedLen {
 110                 t.Errorf("expected Content-Length %s, got %s", expectedLen, receivedLen)
 111         }
 112
 113         // Authenticated request, unsigned locator
 114         // => PermissionError
 115         response = IssueRequest(&RequestTester{
 116                 method:   "GET",
 117                 uri:      unsignedLocator,
 118                 apiToken: known_token,
 119         })
 120         ExpectStatusCode(t, "unsigned locator", PermissionError.HTTPCode, response)
 121
 122         // Unauthenticated request, signed locator
 123         // => PermissionError
 124         response = IssueRequest(&RequestTester{
 125                 method: "GET",
 126                 uri:    signedLocator,
 127         })
 128         ExpectStatusCode(t,
 129                 "Unauthenticated request, signed locator",
 130                 PermissionError.HTTPCode, response)
 131
 132         // Authenticated request, expired locator
 133         // => ExpiredError
 134         response = IssueRequest(&RequestTester{
 135                 method:   "GET",
 136                 uri:      expiredLocator,
 137                 apiToken: known_token,
 138         })
 139         ExpectStatusCode(t,
 140                 "Authenticated request, expired locator",
 141                 ExpiredError.HTTPCode, response)
 142 }
 143
 144 // Test PutBlockHandler on the following situations:
 145 //   - no server key
 146 //   - with server key, authenticated request, unsigned locator
 147 //   - with server key, unauthenticated request, unsigned locator
 148 //
 149 func TestPutHandler(t *testing.T) {
 150         defer teardown()
 151
 152         // Prepare two test Keep volumes.
 153         KeepVM = MakeTestVolumeManager(2)
 154         defer KeepVM.Close()
 155
 156         // --------------
 157         // No server key.
 158
 159         // Unauthenticated request, no server key
 160         // => OK (unsigned response)
 161         unsignedLocator := "/" + TEST_HASH
 162         response := IssueRequest(
 163                 &RequestTester{
 164                         method:      "PUT",
 165                         uri:         unsignedLocator,
 166                         requestBody: TEST_BLOCK,
 167                 })
 168
 169         ExpectStatusCode(t,
 170                 "Unauthenticated request, no server key", http.StatusOK, response)
 171         ExpectBody(t,
 172                 "Unauthenticated request, no server key",
 173                 TEST_HASH_PUT_RESPONSE, response)
 174
 175         // ------------------
 176         // With a server key.
 177
 178         PermissionSecret = []byte(known_key)
 179         blob_signature_ttl = 300 * time.Second
 180
 181         // When a permission key is available, the locator returned
 182         // from an authenticated PUT request will be signed.
 183
 184         // Authenticated PUT, signed locator
 185         // => OK (signed response)
 186         response = IssueRequest(
 187                 &RequestTester{
 188                         method:      "PUT",
 189                         uri:         unsignedLocator,
 190                         requestBody: TEST_BLOCK,
 191                         apiToken:    known_token,
 192                 })
 193
 194         ExpectStatusCode(t,
 195                 "Authenticated PUT, signed locator, with server key",
 196                 http.StatusOK, response)
 197         responseLocator := strings.TrimSpace(response.Body.String())
 198         if VerifySignature(responseLocator, known_token) != nil {
 199                 t.Errorf("Authenticated PUT, signed locator, with server key:\n"+
 200                         "response '%s' does not contain a valid signature",
 201                         responseLocator)
 202         }
 203
 204         // Unauthenticated PUT, unsigned locator
 205         // => OK
 206         response = IssueRequest(
 207                 &RequestTester{
 208                         method:      "PUT",
 209                         uri:         unsignedLocator,
 210                         requestBody: TEST_BLOCK,
 211                 })
 212
 213         ExpectStatusCode(t,
 214                 "Unauthenticated PUT, unsigned locator, with server key",
 215                 http.StatusOK, response)
 216         ExpectBody(t,
 217                 "Unauthenticated PUT, unsigned locator, with server key",
 218                 TEST_HASH_PUT_RESPONSE, response)
 219 }
 220
 221 func TestPutAndDeleteSkipReadonlyVolumes(t *testing.T) {
 222         defer teardown()
 223         data_manager_token = "fake-data-manager-token"
 224         vols := []*MockVolume{CreateMockVolume(), CreateMockVolume()}
 225         vols[0].Readonly = true
 226         KeepVM = MakeRRVolumeManager([]Volume{vols[0], vols[1]})
 227         defer KeepVM.Close()
 228         IssueRequest(
 229                 &RequestTester{
 230                         method:      "PUT",
 231                         uri:         "/" + TEST_HASH,
 232                         requestBody: TEST_BLOCK,
 233                 })
 234         defer func(orig bool) {
 235                 never_delete = orig
 236         }(never_delete)
 237         never_delete = false
 238         IssueRequest(
 239                 &RequestTester{
 240                         method:      "DELETE",
 241                         uri:         "/" + TEST_HASH,
 242                         requestBody: TEST_BLOCK,
 243                         apiToken:    data_manager_token,
 244                 })
 245         type expect struct {
 246                 volnum    int
 247                 method    string
 248                 callcount int
 249         }
 250         for _, e := range []expect{
 251                 {0, "Get", 0},
 252                 {0, "Compare", 0},
 253                 {0, "Touch", 0},
 254                 {0, "Put", 0},
 255                 {0, "Delete", 0},
 256                 {1, "Get", 0},
 257                 {1, "Compare", 1},
 258                 {1, "Touch", 1},
 259                 {1, "Put", 1},
 260                 {1, "Delete", 1},
 261         } {
 262                 if calls := vols[e.volnum].CallCount(e.method); calls != e.callcount {
 263                         t.Errorf("Got %d %s() on vol %d, expect %d", calls, e.method, e.volnum, e.callcount)
 264                 }
 265         }
 266 }
 267
 268 // Test /index requests:
 269 //   - unauthenticated /index request
 270 //   - unauthenticated /index/prefix request
 271 //   - authenticated   /index request        | non-superuser
 272 //   - authenticated   /index/prefix request | non-superuser
 273 //   - authenticated   /index request        | superuser
 274 //   - authenticated   /index/prefix request | superuser
 275 //
 276 // The only /index requests that should succeed are those issued by the
 277 // superuser. They should pass regardless of the value of enforcePermissions.
 278 //
 279 func TestIndexHandler(t *testing.T) {
 280         defer teardown()
 281
 282         // Set up Keep volumes and populate them.
 283         // Include multiple blocks on different volumes, and
 284         // some metadata files (which should be omitted from index listings)
 285         KeepVM = MakeTestVolumeManager(2)
 286         defer KeepVM.Close()
 287
 288         vols := KeepVM.AllWritable()
 289         vols[0].Put(TEST_HASH, TEST_BLOCK)
 290         vols[1].Put(TEST_HASH_2, TEST_BLOCK_2)
 291         vols[0].Put(TEST_HASH+".meta", []byte("metadata"))
 292         vols[1].Put(TEST_HASH_2+".meta", []byte("metadata"))
 293
 294         data_manager_token = "DATA MANAGER TOKEN"
 295
 296         unauthenticatedReq := &RequestTester{
 297                 method: "GET",
 298                 uri:    "/index",
 299         }
 300         authenticatedReq := &RequestTester{
 301                 method:   "GET",
 302                 uri:      "/index",
 303                 apiToken: known_token,
 304         }
 305         superuserReq := &RequestTester{
 306                 method:   "GET",
 307                 uri:      "/index",
 308                 apiToken: data_manager_token,
 309         }
 310         unauthPrefixReq := &RequestTester{
 311                 method: "GET",
 312                 uri:    "/index/" + TEST_HASH[0:3],
 313         }
 314         authPrefixReq := &RequestTester{
 315                 method:   "GET",
 316                 uri:      "/index/" + TEST_HASH[0:3],
 317                 apiToken: known_token,
 318         }
 319         superuserPrefixReq := &RequestTester{
 320                 method:   "GET",
 321                 uri:      "/index/" + TEST_HASH[0:3],
 322                 apiToken: data_manager_token,
 323         }
 324
 325         // -------------------------------------------------------------
 326         // Only the superuser should be allowed to issue /index requests.
 327
 328         // ---------------------------
 329         // enforcePermissions enabled
 330         // This setting should not affect tests passing.
 331         enforcePermissions = true
 332
 333         // unauthenticated /index request
 334         // => UnauthorizedError
 335         response := IssueRequest(unauthenticatedReq)
 336         ExpectStatusCode(t,
 337                 "enforcePermissions on, unauthenticated request",
 338                 UnauthorizedError.HTTPCode,
 339                 response)
 340
 341         // unauthenticated /index/prefix request
 342         // => UnauthorizedError
 343         response = IssueRequest(unauthPrefixReq)
 344         ExpectStatusCode(t,
 345                 "permissions on, unauthenticated /index/prefix request",
 346                 UnauthorizedError.HTTPCode,
 347                 response)
 348
 349         // authenticated /index request, non-superuser
 350         // => UnauthorizedError
 351         response = IssueRequest(authenticatedReq)
 352         ExpectStatusCode(t,
 353                 "permissions on, authenticated request, non-superuser",
 354                 UnauthorizedError.HTTPCode,
 355                 response)
 356
 357         // authenticated /index/prefix request, non-superuser
 358         // => UnauthorizedError
 359         response = IssueRequest(authPrefixReq)
 360         ExpectStatusCode(t,
 361                 "permissions on, authenticated /index/prefix request, non-superuser",
 362                 UnauthorizedError.HTTPCode,
 363                 response)
 364
 365         // superuser /index request
 366         // => OK
 367         response = IssueRequest(superuserReq)
 368         ExpectStatusCode(t,
 369                 "permissions on, superuser request",
 370                 http.StatusOK,
 371                 response)
 372
 373         // ----------------------------
 374         // enforcePermissions disabled
 375         // Valid Request should still pass.
 376         enforcePermissions = false
 377
 378         // superuser /index request
 379         // => OK
 380         response = IssueRequest(superuserReq)
 381         ExpectStatusCode(t,
 382                 "permissions on, superuser request",
 383                 http.StatusOK,
 384                 response)
 385
 386         expected := `^` + TEST_HASH + `\+\d+ \d+\n` +
 387                 TEST_HASH_2 + `\+\d+ \d+\n\n$`
 388         match, _ := regexp.MatchString(expected, response.Body.String())
 389         if !match {
 390                 t.Errorf(
 391                         "permissions on, superuser request: expected %s, got:\n%s",
 392                         expected, response.Body.String())
 393         }
 394
 395         // superuser /index/prefix request
 396         // => OK
 397         response = IssueRequest(superuserPrefixReq)
 398         ExpectStatusCode(t,
 399                 "permissions on, superuser request",
 400                 http.StatusOK,
 401                 response)
 402
 403         expected = `^` + TEST_HASH + `\+\d+ \d+\n\n$`
 404         match, _ = regexp.MatchString(expected, response.Body.String())
 405         if !match {
 406                 t.Errorf(
 407                         "permissions on, superuser /index/prefix request: expected %s, got:\n%s",
 408                         expected, response.Body.String())
 409         }
 410 }
 411
 412 // TestDeleteHandler
 413 //
 414 // Cases tested:
 415 //
 416 //   With no token and with a non-data-manager token:
 417 //   * Delete existing block
 418 //     (test for 403 Forbidden, confirm block not deleted)
 419 //
 420 //   With data manager token:
 421 //
 422 //   * Delete existing block
 423 //     (test for 200 OK, response counts, confirm block deleted)
 424 //
 425 //   * Delete nonexistent block
 426 //     (test for 200 OK, response counts)
 427 //
 428 //   TODO(twp):
 429 //
 430 //   * Delete block on read-only and read-write volume
 431 //     (test for 200 OK, response with copies_deleted=1,
 432 //     copies_failed=1, confirm block deleted only on r/w volume)
 433 //
 434 //   * Delete block on read-only volume only
 435 //     (test for 200 OK, response with copies_deleted=0, copies_failed=1,
 436 //     confirm block not deleted)
 437 //
 438 func TestDeleteHandler(t *testing.T) {
 439         defer teardown()
 440
 441         // Set up Keep volumes and populate them.
 442         // Include multiple blocks on different volumes, and
 443         // some metadata files (which should be omitted from index listings)
 444         KeepVM = MakeTestVolumeManager(2)
 445         defer KeepVM.Close()
 446
 447         vols := KeepVM.AllWritable()
 448         vols[0].Put(TEST_HASH, TEST_BLOCK)
 449
 450         // Explicitly set the blob_signature_ttl to 0 for these
 451         // tests, to ensure the MockVolume deletes the blocks
 452         // even though they have just been created.
 453         blob_signature_ttl = time.Duration(0)
 454
 455         var userToken = "NOT DATA MANAGER TOKEN"
 456         data_manager_token = "DATA MANAGER TOKEN"
 457
 458         never_delete = false
 459
 460         unauthReq := &RequestTester{
 461                 method: "DELETE",
 462                 uri:    "/" + TEST_HASH,
 463         }
 464
 465         userReq := &RequestTester{
 466                 method:   "DELETE",
 467                 uri:      "/" + TEST_HASH,
 468                 apiToken: userToken,
 469         }
 470
 471         superuserExistingBlockReq := &RequestTester{
 472                 method:   "DELETE",
 473                 uri:      "/" + TEST_HASH,
 474                 apiToken: data_manager_token,
 475         }
 476
 477         superuserNonexistentBlockReq := &RequestTester{
 478                 method:   "DELETE",
 479                 uri:      "/" + TEST_HASH_2,
 480                 apiToken: data_manager_token,
 481         }
 482
 483         // Unauthenticated request returns PermissionError.
 484         var response *httptest.ResponseRecorder
 485         response = IssueRequest(unauthReq)
 486         ExpectStatusCode(t,
 487                 "unauthenticated request",
 488                 PermissionError.HTTPCode,
 489                 response)
 490
 491         // Authenticated non-admin request returns PermissionError.
 492         response = IssueRequest(userReq)
 493         ExpectStatusCode(t,
 494                 "authenticated non-admin request",
 495                 PermissionError.HTTPCode,
 496                 response)
 497
 498         // Authenticated admin request for nonexistent block.
 499         type deletecounter struct {
 500                 Deleted int `json:"copies_deleted"`
 501                 Failed  int `json:"copies_failed"`
 502         }
 503         var responseDc, expectedDc deletecounter
 504
 505         response = IssueRequest(superuserNonexistentBlockReq)
 506         ExpectStatusCode(t,
 507                 "data manager request, nonexistent block",
 508                 http.StatusNotFound,
 509                 response)
 510
 511         // Authenticated admin request for existing block while never_delete is set.
 512         never_delete = true
 513         response = IssueRequest(superuserExistingBlockReq)
 514         ExpectStatusCode(t,
 515                 "authenticated request, existing block, method disabled",
 516                 MethodDisabledError.HTTPCode,
 517                 response)
 518         never_delete = false
 519
 520         // Authenticated admin request for existing block.
 521         response = IssueRequest(superuserExistingBlockReq)
 522         ExpectStatusCode(t,
 523                 "data manager request, existing block",
 524                 http.StatusOK,
 525                 response)
 526         // Expect response {"copies_deleted":1,"copies_failed":0}
 527         expectedDc = deletecounter{1, 0}
 528         json.NewDecoder(response.Body).Decode(&responseDc)
 529         if responseDc != expectedDc {
 530                 t.Errorf("superuserExistingBlockReq\nexpected: %+v\nreceived: %+v",
 531                         expectedDc, responseDc)
 532         }
 533         // Confirm the block has been deleted
 534         _, err := vols[0].Get(TEST_HASH)
 535         var blockDeleted = os.IsNotExist(err)
 536         if !blockDeleted {
 537                 t.Error("superuserExistingBlockReq: block not deleted")
 538         }
 539
 540         // A DELETE request on a block newer than blob_signature_ttl
 541         // should return success but leave the block on the volume.
 542         vols[0].Put(TEST_HASH, TEST_BLOCK)
 543         blob_signature_ttl = time.Hour
 544
 545         response = IssueRequest(superuserExistingBlockReq)
 546         ExpectStatusCode(t,
 547                 "data manager request, existing block",
 548                 http.StatusOK,
 549                 response)
 550         // Expect response {"copies_deleted":1,"copies_failed":0}
 551         expectedDc = deletecounter{1, 0}
 552         json.NewDecoder(response.Body).Decode(&responseDc)
 553         if responseDc != expectedDc {
 554                 t.Errorf("superuserExistingBlockReq\nexpected: %+v\nreceived: %+v",
 555                         expectedDc, responseDc)
 556         }
 557         // Confirm the block has NOT been deleted.
 558         _, err = vols[0].Get(TEST_HASH)
 559         if err != nil {
 560                 t.Errorf("testing delete on new block: %s\n", err)
 561         }
 562 }
 563
 564 // TestPullHandler
 565 //
 566 // Test handling of the PUT /pull statement.
 567 //
 568 // Cases tested: syntactically valid and invalid pull lists, from the
 569 // data manager and from unprivileged users:
 570 //
 571 //   1. Valid pull list from an ordinary user
 572 //      (expected result: 401 Unauthorized)
 573 //
 574 //   2. Invalid pull request from an ordinary user
 575 //      (expected result: 401 Unauthorized)
 576 //
 577 //   3. Valid pull request from the data manager
 578 //      (expected result: 200 OK with request body "Received 3 pull
 579 //      requests"
 580 //
 581 //   4. Invalid pull request from the data manager
 582 //      (expected result: 400 Bad Request)
 583 //
 584 // Test that in the end, the pull manager received a good pull list with
 585 // the expected number of requests.
 586 //
 587 // TODO(twp): test concurrency: launch 100 goroutines to update the
 588 // pull list simultaneously.  Make sure that none of them return 400
 589 // Bad Request and that pullq.GetList() returns a valid list.
 590 //
 591 func TestPullHandler(t *testing.T) {
 592         defer teardown()
 593
 594         var userToken = "USER TOKEN"
 595         data_manager_token = "DATA MANAGER TOKEN"
 596
 597         pullq = NewWorkQueue()
 598
 599         goodJSON := []byte(`[
 600                 {
 601                         "locator":"locator_with_two_servers",
 602                         "servers":[
 603                                 "server1",
 604                                 "server2"
 605                         ]
 606                 },
 607                 {
 608                         "locator":"locator_with_no_servers",
 609                         "servers":[]
 610                 },
 611                 {
 612                         "locator":"",
 613                         "servers":["empty_locator"]
 614                 }
 615         ]`)
 616
 617         badJSON := []byte(`{ "key":"I'm a little teapot" }`)
 618
 619         type pullTest struct {
 620                 name         string
 621                 req          RequestTester
 622                 responseCode int
 623                 responseBody string
 624         }
 625         var testcases = []pullTest{
 626                 {
 627                         "Valid pull list from an ordinary user",
 628                         RequestTester{"/pull", userToken, "PUT", goodJSON},
 629                         http.StatusUnauthorized,
 630                         "Unauthorized\n",
 631                 },
 632                 {
 633                         "Invalid pull request from an ordinary user",
 634                         RequestTester{"/pull", userToken, "PUT", badJSON},
 635                         http.StatusUnauthorized,
 636                         "Unauthorized\n",
 637                 },
 638                 {
 639                         "Valid pull request from the data manager",
 640                         RequestTester{"/pull", data_manager_token, "PUT", goodJSON},
 641                         http.StatusOK,
 642                         "Received 3 pull requests\n",
 643                 },
 644                 {
 645                         "Invalid pull request from the data manager",
 646                         RequestTester{"/pull", data_manager_token, "PUT", badJSON},
 647                         http.StatusBadRequest,
 648                         "",
 649                 },
 650         }
 651
 652         for _, tst := range testcases {
 653                 response := IssueRequest(&tst.req)
 654                 ExpectStatusCode(t, tst.name, tst.responseCode, response)
 655                 ExpectBody(t, tst.name, tst.responseBody, response)
 656         }
 657
 658         // The Keep pull manager should have received one good list with 3
 659         // requests on it.
 660         for i := 0; i < 3; i++ {
 661                 item := <-pullq.NextItem
 662                 if _, ok := item.(PullRequest); !ok {
 663                         t.Errorf("item %v could not be parsed as a PullRequest", item)
 664                 }
 665         }
 666
 667         expectChannelEmpty(t, pullq.NextItem)
 668 }
 669
 670 // TestTrashHandler
 671 //
 672 // Test cases:
 673 //
 674 // Cases tested: syntactically valid and invalid trash lists, from the
 675 // data manager and from unprivileged users:
 676 //
 677 //   1. Valid trash list from an ordinary user
 678 //      (expected result: 401 Unauthorized)
 679 //
 680 //   2. Invalid trash list from an ordinary user
 681 //      (expected result: 401 Unauthorized)
 682 //
 683 //   3. Valid trash list from the data manager
 684 //      (expected result: 200 OK with request body "Received 3 trash
 685 //      requests"
 686 //
 687 //   4. Invalid trash list from the data manager
 688 //      (expected result: 400 Bad Request)
 689 //
 690 // Test that in the end, the trash collector received a good list
 691 // trash list with the expected number of requests.
 692 //
 693 // TODO(twp): test concurrency: launch 100 goroutines to update the
 694 // pull list simultaneously.  Make sure that none of them return 400
 695 // Bad Request and that replica.Dump() returns a valid list.
 696 //
 697 func TestTrashHandler(t *testing.T) {
 698         defer teardown()
 699
 700         var userToken = "USER TOKEN"
 701         data_manager_token = "DATA MANAGER TOKEN"
 702
 703         trashq = NewWorkQueue()
 704
 705         goodJSON := []byte(`[
 706                 {
 707                         "locator":"block1",
 708                         "block_mtime":1409082153
 709                 },
 710                 {
 711                         "locator":"block2",
 712                         "block_mtime":1409082153
 713                 },
 714                 {
 715                         "locator":"block3",
 716                         "block_mtime":1409082153
 717                 }
 718         ]`)
 719
 720         badJSON := []byte(`I am not a valid JSON string`)
 721
 722         type trashTest struct {
 723                 name         string
 724                 req          RequestTester
 725                 responseCode int
 726                 responseBody string
 727         }
 728
 729         var testcases = []trashTest{
 730                 {
 731                         "Valid trash list from an ordinary user",
 732                         RequestTester{"/trash", userToken, "PUT", goodJSON},
 733                         http.StatusUnauthorized,
 734                         "Unauthorized\n",
 735                 },
 736                 {
 737                         "Invalid trash list from an ordinary user",
 738                         RequestTester{"/trash", userToken, "PUT", badJSON},
 739                         http.StatusUnauthorized,
 740                         "Unauthorized\n",
 741                 },
 742                 {
 743                         "Valid trash list from the data manager",
 744                         RequestTester{"/trash", data_manager_token, "PUT", goodJSON},
 745                         http.StatusOK,
 746                         "Received 3 trash requests\n",
 747                 },
 748                 {
 749                         "Invalid trash list from the data manager",
 750                         RequestTester{"/trash", data_manager_token, "PUT", badJSON},
 751                         http.StatusBadRequest,
 752                         "",
 753                 },
 754         }
 755
 756         for _, tst := range testcases {
 757                 response := IssueRequest(&tst.req)
 758                 ExpectStatusCode(t, tst.name, tst.responseCode, response)
 759                 ExpectBody(t, tst.name, tst.responseBody, response)
 760         }
 761
 762         // The trash collector should have received one good list with 3
 763         // requests on it.
 764         for i := 0; i < 3; i++ {
 765                 item := <-trashq.NextItem
 766                 if _, ok := item.(TrashRequest); !ok {
 767                         t.Errorf("item %v could not be parsed as a TrashRequest", item)
 768                 }
 769         }
 770
 771         expectChannelEmpty(t, trashq.NextItem)
 772 }
 773
 774 // ====================
 775 // Helper functions
 776 // ====================
 777
 778 // IssueTestRequest executes an HTTP request described by rt, to a
 779 // REST router.  It returns the HTTP response to the request.
 780 func IssueRequest(rt *RequestTester) *httptest.ResponseRecorder {
 781         response := httptest.NewRecorder()
 782         body := bytes.NewReader(rt.requestBody)
 783         req, _ := http.NewRequest(rt.method, rt.uri, body)
 784         if rt.apiToken != "" {
 785                 req.Header.Set("Authorization", "OAuth2 "+rt.apiToken)
 786         }
 787         loggingRouter := MakeLoggingRESTRouter()
 788         loggingRouter.ServeHTTP(response, req)
 789         return response
 790 }
 791
 792 // ExpectStatusCode checks whether a response has the specified status code,
 793 // and reports a test failure if not.
 794 func ExpectStatusCode(
 795         t *testing.T,
 796         testname string,
 797         expectedStatus int,
 798         response *httptest.ResponseRecorder) {
 799         if response.Code != expectedStatus {
 800                 t.Errorf("%s: expected status %d, got %+v",
 801                         testname, expectedStatus, response)
 802         }
 803 }
 804
 805 func ExpectBody(
 806         t *testing.T,
 807         testname string,
 808         expectedBody string,
 809         response *httptest.ResponseRecorder) {
 810         if expectedBody != "" && response.Body.String() != expectedBody {
 811                 t.Errorf("%s: expected response body '%s', got %+v",
 812                         testname, expectedBody, response)
 813         }
 814 }
 815
 816 // See #7121
 817 func TestPutNeedsOnlyOneBuffer(t *testing.T) {
 818         defer teardown()
 819         KeepVM = MakeTestVolumeManager(1)
 820         defer KeepVM.Close()
 821
 822         defer func(orig *bufferPool) {
 823                 bufs = orig
 824         }(bufs)
 825         bufs = newBufferPool(1, BlockSize)
 826
 827         ok := make(chan struct{})
 828         go func() {
 829                 for i := 0; i < 2; i++ {
 830                         response := IssueRequest(
 831                                 &RequestTester{
 832                                         method:      "PUT",
 833                                         uri:         "/" + TEST_HASH,
 834                                         requestBody: TEST_BLOCK,
 835                                 })
 836                         ExpectStatusCode(t,
 837                                 "TestPutNeedsOnlyOneBuffer", http.StatusOK, response)
 838                 }
 839                 ok <- struct{}{}
 840         }()
 841
 842         select {
 843         case <-ok:
 844         case <-time.After(time.Second):
 845                 t.Fatal("PUT deadlocks with maxBuffers==1")
 846         }
 847 }
 848
 849 // Invoke the PutBlockHandler a bunch of times to test for bufferpool resource
 850 // leak.
 851 func TestPutHandlerNoBufferleak(t *testing.T) {
 852         defer teardown()
 853
 854         // Prepare two test Keep volumes.
 855         KeepVM = MakeTestVolumeManager(2)
 856         defer KeepVM.Close()
 857
 858         ok := make(chan bool)
 859         go func() {
 860                 for i := 0; i < maxBuffers+1; i++ {
 861                         // Unauthenticated request, no server key
 862                         // => OK (unsigned response)
 863                         unsignedLocator := "/" + TEST_HASH
 864                         response := IssueRequest(
 865                                 &RequestTester{
 866                                         method:      "PUT",
 867                                         uri:         unsignedLocator,
 868                                         requestBody: TEST_BLOCK,
 869                                 })
 870                         ExpectStatusCode(t,
 871                                 "TestPutHandlerBufferleak", http.StatusOK, response)
 872                         ExpectBody(t,
 873                                 "TestPutHandlerBufferleak",
 874                                 TEST_HASH_PUT_RESPONSE, response)
 875                 }
 876                 ok <- true
 877         }()
 878         select {
 879         case <-time.After(20 * time.Second):
 880                 // If the buffer pool leaks, the test goroutine hangs.
 881                 t.Fatal("test did not finish, assuming pool leaked")
 882         case <-ok:
 883         }
 884 }
 885
 886 // Invoke the GetBlockHandler a bunch of times to test for bufferpool resource
 887 // leak.
 888 func TestGetHandlerNoBufferleak(t *testing.T) {
 889         defer teardown()
 890
 891         // Prepare two test Keep volumes. Our block is stored on the second volume.
 892         KeepVM = MakeTestVolumeManager(2)
 893         defer KeepVM.Close()
 894
 895         vols := KeepVM.AllWritable()
 896         if err := vols[0].Put(TEST_HASH, TEST_BLOCK); err != nil {
 897                 t.Error(err)
 898         }
 899
 900         ok := make(chan bool)
 901         go func() {
 902                 for i := 0; i < maxBuffers+1; i++ {
 903                         // Unauthenticated request, unsigned locator
 904                         // => OK
 905                         unsignedLocator := "/" + TEST_HASH
 906                         response := IssueRequest(
 907                                 &RequestTester{
 908                                         method: "GET",
 909                                         uri:    unsignedLocator,
 910                                 })
 911                         ExpectStatusCode(t,
 912                                 "Unauthenticated request, unsigned locator", http.StatusOK, response)
 913                         ExpectBody(t,
 914                                 "Unauthenticated request, unsigned locator",
 915                                 string(TEST_BLOCK),
 916                                 response)
 917                 }
 918                 ok <- true
 919         }()
 920         select {
 921         case <-time.After(20 * time.Second):
 922                 // If the buffer pool leaks, the test goroutine hangs.
 923                 t.Fatal("test did not finish, assuming pool leaked")
 924         case <-ok:
 925         }
 926 }