8555: Log statistics in EmptyTrash.
[arvados.git] / services / keepstore / handler_test.go
index 68e80c410c0ba37a7a7f72c327e90cd53d4ddb62..7c17424ba568227790469e4e32867f33fea8ff4e 100644 (file)
@@ -46,27 +46,27 @@ func TestGetHandler(t *testing.T) {
        defer KeepVM.Close()
 
        vols := KeepVM.AllWritable()
-       if err := vols[0].Put(TEST_HASH, TEST_BLOCK); err != nil {
+       if err := vols[0].Put(TestHash, TestBlock); err != nil {
                t.Error(err)
        }
 
        // Create locators for testing.
        // Turn on permission settings so we can generate signed locators.
-       enforce_permissions = true
-       PermissionSecret = []byte(known_key)
-       blob_signature_ttl = 300 * time.Second
+       enforcePermissions = true
+       PermissionSecret = []byte(knownKey)
+       blobSignatureTTL = 300 * time.Second
 
        var (
-               unsignedLocator  = "/" + TEST_HASH
-               validTimestamp   = time.Now().Add(blob_signature_ttl)
+               unsignedLocator  = "/" + TestHash
+               validTimestamp   = time.Now().Add(blobSignatureTTL)
                expiredTimestamp = time.Now().Add(-time.Hour)
-               signedLocator    = "/" + SignLocator(TEST_HASH, known_token, validTimestamp)
-               expiredLocator   = "/" + SignLocator(TEST_HASH, known_token, expiredTimestamp)
+               signedLocator    = "/" + SignLocator(TestHash, knownToken, validTimestamp)
+               expiredLocator   = "/" + SignLocator(TestHash, knownToken, expiredTimestamp)
        )
 
        // -----------------
        // Test unauthenticated request with permissions off.
-       enforce_permissions = false
+       enforcePermissions = false
 
        // Unauthenticated request, unsigned locator
        // => OK
@@ -79,33 +79,33 @@ func TestGetHandler(t *testing.T) {
                "Unauthenticated request, unsigned locator", http.StatusOK, response)
        ExpectBody(t,
                "Unauthenticated request, unsigned locator",
-               string(TEST_BLOCK),
+               string(TestBlock),
                response)
 
        receivedLen := response.Header().Get("Content-Length")
-       expectedLen := fmt.Sprintf("%d", len(TEST_BLOCK))
+       expectedLen := fmt.Sprintf("%d", len(TestBlock))
        if receivedLen != expectedLen {
                t.Errorf("expected Content-Length %s, got %s", expectedLen, receivedLen)
        }
 
        // ----------------
        // Permissions: on.
-       enforce_permissions = true
+       enforcePermissions = true
 
        // Authenticated request, signed locator
        // => OK
        response = IssueRequest(&RequestTester{
                method:   "GET",
                uri:      signedLocator,
-               apiToken: known_token,
+               apiToken: knownToken,
        })
        ExpectStatusCode(t,
                "Authenticated request, signed locator", http.StatusOK, response)
        ExpectBody(t,
-               "Authenticated request, signed locator", string(TEST_BLOCK), response)
+               "Authenticated request, signed locator", string(TestBlock), response)
 
        receivedLen = response.Header().Get("Content-Length")
-       expectedLen = fmt.Sprintf("%d", len(TEST_BLOCK))
+       expectedLen = fmt.Sprintf("%d", len(TestBlock))
        if receivedLen != expectedLen {
                t.Errorf("expected Content-Length %s, got %s", expectedLen, receivedLen)
        }
@@ -115,7 +115,7 @@ func TestGetHandler(t *testing.T) {
        response = IssueRequest(&RequestTester{
                method:   "GET",
                uri:      unsignedLocator,
-               apiToken: known_token,
+               apiToken: knownToken,
        })
        ExpectStatusCode(t, "unsigned locator", PermissionError.HTTPCode, response)
 
@@ -134,7 +134,7 @@ func TestGetHandler(t *testing.T) {
        response = IssueRequest(&RequestTester{
                method:   "GET",
                uri:      expiredLocator,
-               apiToken: known_token,
+               apiToken: knownToken,
        })
        ExpectStatusCode(t,
                "Authenticated request, expired locator",
@@ -158,25 +158,25 @@ func TestPutHandler(t *testing.T) {
 
        // Unauthenticated request, no server key
        // => OK (unsigned response)
-       unsignedLocator := "/" + TEST_HASH
+       unsignedLocator := "/" + TestHash
        response := IssueRequest(
                &RequestTester{
                        method:      "PUT",
                        uri:         unsignedLocator,
-                       requestBody: TEST_BLOCK,
+                       requestBody: TestBlock,
                })
 
        ExpectStatusCode(t,
                "Unauthenticated request, no server key", http.StatusOK, response)
        ExpectBody(t,
                "Unauthenticated request, no server key",
-               TEST_HASH_PUT_RESPONSE, response)
+               TestHashPutResp, response)
 
        // ------------------
        // With a server key.
 
-       PermissionSecret = []byte(known_key)
-       blob_signature_ttl = 300 * time.Second
+       PermissionSecret = []byte(knownKey)
+       blobSignatureTTL = 300 * time.Second
 
        // When a permission key is available, the locator returned
        // from an authenticated PUT request will be signed.
@@ -187,15 +187,15 @@ func TestPutHandler(t *testing.T) {
                &RequestTester{
                        method:      "PUT",
                        uri:         unsignedLocator,
-                       requestBody: TEST_BLOCK,
-                       apiToken:    known_token,
+                       requestBody: TestBlock,
+                       apiToken:    knownToken,
                })
 
        ExpectStatusCode(t,
                "Authenticated PUT, signed locator, with server key",
                http.StatusOK, response)
        responseLocator := strings.TrimSpace(response.Body.String())
-       if VerifySignature(responseLocator, known_token) != nil {
+       if VerifySignature(responseLocator, knownToken) != nil {
                t.Errorf("Authenticated PUT, signed locator, with server key:\n"+
                        "response '%s' does not contain a valid signature",
                        responseLocator)
@@ -207,7 +207,7 @@ func TestPutHandler(t *testing.T) {
                &RequestTester{
                        method:      "PUT",
                        uri:         unsignedLocator,
-                       requestBody: TEST_BLOCK,
+                       requestBody: TestBlock,
                })
 
        ExpectStatusCode(t,
@@ -215,12 +215,12 @@ func TestPutHandler(t *testing.T) {
                http.StatusOK, response)
        ExpectBody(t,
                "Unauthenticated PUT, unsigned locator, with server key",
-               TEST_HASH_PUT_RESPONSE, response)
+               TestHashPutResp, response)
 }
 
 func TestPutAndDeleteSkipReadonlyVolumes(t *testing.T) {
        defer teardown()
-       data_manager_token = "fake-data-manager-token"
+       dataManagerToken = "fake-data-manager-token"
        vols := []*MockVolume{CreateMockVolume(), CreateMockVolume()}
        vols[0].Readonly = true
        KeepVM = MakeRRVolumeManager([]Volume{vols[0], vols[1]})
@@ -228,19 +228,19 @@ func TestPutAndDeleteSkipReadonlyVolumes(t *testing.T) {
        IssueRequest(
                &RequestTester{
                        method:      "PUT",
-                       uri:         "/" + TEST_HASH,
-                       requestBody: TEST_BLOCK,
+                       uri:         "/" + TestHash,
+                       requestBody: TestBlock,
                })
        defer func(orig bool) {
-               never_delete = orig
-       }(never_delete)
-       never_delete = false
+               neverDelete = orig
+       }(neverDelete)
+       neverDelete = false
        IssueRequest(
                &RequestTester{
                        method:      "DELETE",
-                       uri:         "/" + TEST_HASH,
-                       requestBody: TEST_BLOCK,
-                       apiToken:    data_manager_token,
+                       uri:         "/" + TestHash,
+                       requestBody: TestBlock,
+                       apiToken:    dataManagerToken,
                })
        type expect struct {
                volnum    int
@@ -274,7 +274,7 @@ func TestPutAndDeleteSkipReadonlyVolumes(t *testing.T) {
 //   - authenticated   /index/prefix request | superuser
 //
 // The only /index requests that should succeed are those issued by the
-// superuser. They should pass regardless of the value of enforce_permissions.
+// superuser. They should pass regardless of the value of enforcePermissions.
 //
 func TestIndexHandler(t *testing.T) {
        defer teardown()
@@ -286,12 +286,12 @@ func TestIndexHandler(t *testing.T) {
        defer KeepVM.Close()
 
        vols := KeepVM.AllWritable()
-       vols[0].Put(TEST_HASH, TEST_BLOCK)
-       vols[1].Put(TEST_HASH_2, TEST_BLOCK_2)
-       vols[0].Put(TEST_HASH+".meta", []byte("metadata"))
-       vols[1].Put(TEST_HASH_2+".meta", []byte("metadata"))
+       vols[0].Put(TestHash, TestBlock)
+       vols[1].Put(TestHash2, TestBlock2)
+       vols[0].Put(TestHash+".meta", []byte("metadata"))
+       vols[1].Put(TestHash2+".meta", []byte("metadata"))
 
-       data_manager_token = "DATA MANAGER TOKEN"
+       dataManagerToken = "DATA MANAGER TOKEN"
 
        unauthenticatedReq := &RequestTester{
                method: "GET",
@@ -300,41 +300,51 @@ func TestIndexHandler(t *testing.T) {
        authenticatedReq := &RequestTester{
                method:   "GET",
                uri:      "/index",
-               apiToken: known_token,
+               apiToken: knownToken,
        }
        superuserReq := &RequestTester{
                method:   "GET",
                uri:      "/index",
-               apiToken: data_manager_token,
+               apiToken: dataManagerToken,
        }
        unauthPrefixReq := &RequestTester{
                method: "GET",
-               uri:    "/index/" + TEST_HASH[0:3],
+               uri:    "/index/" + TestHash[0:3],
        }
        authPrefixReq := &RequestTester{
                method:   "GET",
-               uri:      "/index/" + TEST_HASH[0:3],
-               apiToken: known_token,
+               uri:      "/index/" + TestHash[0:3],
+               apiToken: knownToken,
        }
        superuserPrefixReq := &RequestTester{
                method:   "GET",
-               uri:      "/index/" + TEST_HASH[0:3],
-               apiToken: data_manager_token,
+               uri:      "/index/" + TestHash[0:3],
+               apiToken: dataManagerToken,
+       }
+       superuserNoSuchPrefixReq := &RequestTester{
+               method:   "GET",
+               uri:      "/index/abcd",
+               apiToken: dataManagerToken,
+       }
+       superuserInvalidPrefixReq := &RequestTester{
+               method:   "GET",
+               uri:      "/index/xyz",
+               apiToken: dataManagerToken,
        }
 
        // -------------------------------------------------------------
        // Only the superuser should be allowed to issue /index requests.
 
        // ---------------------------
-       // enforce_permissions enabled
+       // enforcePermissions enabled
        // This setting should not affect tests passing.
-       enforce_permissions = true
+       enforcePermissions = true
 
        // unauthenticated /index request
        // => UnauthorizedError
        response := IssueRequest(unauthenticatedReq)
        ExpectStatusCode(t,
-               "enforce_permissions on, unauthenticated request",
+               "enforcePermissions on, unauthenticated request",
                UnauthorizedError.HTTPCode,
                response)
 
@@ -371,9 +381,9 @@ func TestIndexHandler(t *testing.T) {
                response)
 
        // ----------------------------
-       // enforce_permissions disabled
+       // enforcePermissions disabled
        // Valid Request should still pass.
-       enforce_permissions = false
+       enforcePermissions = false
 
        // superuser /index request
        // => OK
@@ -383,8 +393,8 @@ func TestIndexHandler(t *testing.T) {
                http.StatusOK,
                response)
 
-       expected := `^` + TEST_HASH + `\+\d+ \d+\n` +
-               TEST_HASH_2 + `\+\d+ \d+\n\n$`
+       expected := `^` + TestHash + `\+\d+ \d+\n` +
+               TestHash2 + `\+\d+ \d+\n\n$`
        match, _ := regexp.MatchString(expected, response.Body.String())
        if !match {
                t.Errorf(
@@ -400,13 +410,33 @@ func TestIndexHandler(t *testing.T) {
                http.StatusOK,
                response)
 
-       expected = `^` + TEST_HASH + `\+\d+ \d+\n\n$`
+       expected = `^` + TestHash + `\+\d+ \d+\n\n$`
        match, _ = regexp.MatchString(expected, response.Body.String())
        if !match {
                t.Errorf(
                        "permissions on, superuser /index/prefix request: expected %s, got:\n%s",
                        expected, response.Body.String())
        }
+
+       // superuser /index/{no-such-prefix} request
+       // => OK
+       response = IssueRequest(superuserNoSuchPrefixReq)
+       ExpectStatusCode(t,
+               "permissions on, superuser request",
+               http.StatusOK,
+               response)
+
+       if "\n" != response.Body.String() {
+               t.Errorf("Expected empty response for %s. Found %s", superuserNoSuchPrefixReq.uri, response.Body.String())
+       }
+
+       // superuser /index/{invalid-prefix} request
+       // => StatusBadRequest
+       response = IssueRequest(superuserInvalidPrefixReq)
+       ExpectStatusCode(t,
+               "permissions on, superuser request",
+               http.StatusBadRequest,
+               response)
 }
 
 // TestDeleteHandler
@@ -445,39 +475,39 @@ func TestDeleteHandler(t *testing.T) {
        defer KeepVM.Close()
 
        vols := KeepVM.AllWritable()
-       vols[0].Put(TEST_HASH, TEST_BLOCK)
+       vols[0].Put(TestHash, TestBlock)
 
-       // Explicitly set the blob_signature_ttl to 0 for these
+       // Explicitly set the blobSignatureTTL to 0 for these
        // tests, to ensure the MockVolume deletes the blocks
        // even though they have just been created.
-       blob_signature_ttl = time.Duration(0)
+       blobSignatureTTL = time.Duration(0)
 
        var userToken = "NOT DATA MANAGER TOKEN"
-       data_manager_token = "DATA MANAGER TOKEN"
+       dataManagerToken = "DATA MANAGER TOKEN"
 
-       never_delete = false
+       neverDelete = false
 
        unauthReq := &RequestTester{
                method: "DELETE",
-               uri:    "/" + TEST_HASH,
+               uri:    "/" + TestHash,
        }
 
        userReq := &RequestTester{
                method:   "DELETE",
-               uri:      "/" + TEST_HASH,
+               uri:      "/" + TestHash,
                apiToken: userToken,
        }
 
        superuserExistingBlockReq := &RequestTester{
                method:   "DELETE",
-               uri:      "/" + TEST_HASH,
-               apiToken: data_manager_token,
+               uri:      "/" + TestHash,
+               apiToken: dataManagerToken,
        }
 
        superuserNonexistentBlockReq := &RequestTester{
                method:   "DELETE",
-               uri:      "/" + TEST_HASH_2,
-               apiToken: data_manager_token,
+               uri:      "/" + TestHash2,
+               apiToken: dataManagerToken,
        }
 
        // Unauthenticated request returns PermissionError.
@@ -508,14 +538,14 @@ func TestDeleteHandler(t *testing.T) {
                http.StatusNotFound,
                response)
 
-       // Authenticated admin request for existing block while never_delete is set.
-       never_delete = true
+       // Authenticated admin request for existing block while neverDelete is set.
+       neverDelete = true
        response = IssueRequest(superuserExistingBlockReq)
        ExpectStatusCode(t,
                "authenticated request, existing block, method disabled",
                MethodDisabledError.HTTPCode,
                response)
-       never_delete = false
+       neverDelete = false
 
        // Authenticated admin request for existing block.
        response = IssueRequest(superuserExistingBlockReq)
@@ -531,16 +561,17 @@ func TestDeleteHandler(t *testing.T) {
                        expectedDc, responseDc)
        }
        // Confirm the block has been deleted
-       _, err := vols[0].Get(TEST_HASH)
+       buf := make([]byte, BlockSize)
+       _, err := vols[0].Get(TestHash, buf)
        var blockDeleted = os.IsNotExist(err)
        if !blockDeleted {
                t.Error("superuserExistingBlockReq: block not deleted")
        }
 
-       // A DELETE request on a block newer than blob_signature_ttl
+       // A DELETE request on a block newer than blobSignatureTTL
        // should return success but leave the block on the volume.
-       vols[0].Put(TEST_HASH, TEST_BLOCK)
-       blob_signature_ttl = time.Hour
+       vols[0].Put(TestHash, TestBlock)
+       blobSignatureTTL = time.Hour
 
        response = IssueRequest(superuserExistingBlockReq)
        ExpectStatusCode(t,
@@ -555,7 +586,7 @@ func TestDeleteHandler(t *testing.T) {
                        expectedDc, responseDc)
        }
        // Confirm the block has NOT been deleted.
-       _, err = vols[0].Get(TEST_HASH)
+       _, err = vols[0].Get(TestHash, buf)
        if err != nil {
                t.Errorf("testing delete on new block: %s\n", err)
        }
@@ -592,7 +623,7 @@ func TestPullHandler(t *testing.T) {
        defer teardown()
 
        var userToken = "USER TOKEN"
-       data_manager_token = "DATA MANAGER TOKEN"
+       dataManagerToken = "DATA MANAGER TOKEN"
 
        pullq = NewWorkQueue()
 
@@ -637,13 +668,13 @@ func TestPullHandler(t *testing.T) {
                },
                {
                        "Valid pull request from the data manager",
-                       RequestTester{"/pull", data_manager_token, "PUT", goodJSON},
+                       RequestTester{"/pull", dataManagerToken, "PUT", goodJSON},
                        http.StatusOK,
                        "Received 3 pull requests\n",
                },
                {
                        "Invalid pull request from the data manager",
-                       RequestTester{"/pull", data_manager_token, "PUT", badJSON},
+                       RequestTester{"/pull", dataManagerToken, "PUT", badJSON},
                        http.StatusBadRequest,
                        "",
                },
@@ -698,7 +729,7 @@ func TestTrashHandler(t *testing.T) {
        defer teardown()
 
        var userToken = "USER TOKEN"
-       data_manager_token = "DATA MANAGER TOKEN"
+       dataManagerToken = "DATA MANAGER TOKEN"
 
        trashq = NewWorkQueue()
 
@@ -741,13 +772,13 @@ func TestTrashHandler(t *testing.T) {
                },
                {
                        "Valid trash list from the data manager",
-                       RequestTester{"/trash", data_manager_token, "PUT", goodJSON},
+                       RequestTester{"/trash", dataManagerToken, "PUT", goodJSON},
                        http.StatusOK,
                        "Received 3 trash requests\n",
                },
                {
                        "Invalid trash list from the data manager",
-                       RequestTester{"/trash", data_manager_token, "PUT", badJSON},
+                       RequestTester{"/trash", dataManagerToken, "PUT", badJSON},
                        http.StatusBadRequest,
                        "",
                },
@@ -784,7 +815,7 @@ func IssueRequest(rt *RequestTester) *httptest.ResponseRecorder {
        if rt.apiToken != "" {
                req.Header.Set("Authorization", "OAuth2 "+rt.apiToken)
        }
-       loggingRouter := MakeLoggingRESTRouter()
+       loggingRouter := MakeRESTRouter()
        loggingRouter.ServeHTTP(response, req)
        return response
 }
@@ -822,7 +853,7 @@ func TestPutNeedsOnlyOneBuffer(t *testing.T) {
        defer func(orig *bufferPool) {
                bufs = orig
        }(bufs)
-       bufs = newBufferPool(1, BLOCKSIZE)
+       bufs = newBufferPool(1, BlockSize)
 
        ok := make(chan struct{})
        go func() {
@@ -830,8 +861,8 @@ func TestPutNeedsOnlyOneBuffer(t *testing.T) {
                        response := IssueRequest(
                                &RequestTester{
                                        method:      "PUT",
-                                       uri:         "/" + TEST_HASH,
-                                       requestBody: TEST_BLOCK,
+                                       uri:         "/" + TestHash,
+                                       requestBody: TestBlock,
                                })
                        ExpectStatusCode(t,
                                "TestPutNeedsOnlyOneBuffer", http.StatusOK, response)
@@ -860,18 +891,18 @@ func TestPutHandlerNoBufferleak(t *testing.T) {
                for i := 0; i < maxBuffers+1; i++ {
                        // Unauthenticated request, no server key
                        // => OK (unsigned response)
-                       unsignedLocator := "/" + TEST_HASH
+                       unsignedLocator := "/" + TestHash
                        response := IssueRequest(
                                &RequestTester{
                                        method:      "PUT",
                                        uri:         unsignedLocator,
-                                       requestBody: TEST_BLOCK,
+                                       requestBody: TestBlock,
                                })
                        ExpectStatusCode(t,
                                "TestPutHandlerBufferleak", http.StatusOK, response)
                        ExpectBody(t,
                                "TestPutHandlerBufferleak",
-                               TEST_HASH_PUT_RESPONSE, response)
+                               TestHashPutResp, response)
                }
                ok <- true
        }()
@@ -883,6 +914,65 @@ func TestPutHandlerNoBufferleak(t *testing.T) {
        }
 }
 
+type notifyingResponseRecorder struct {
+       *httptest.ResponseRecorder
+       closer chan bool
+}
+
+func (r *notifyingResponseRecorder) CloseNotify() <-chan bool {
+       return r.closer
+}
+
+func TestGetHandlerClientDisconnect(t *testing.T) {
+       defer func(was bool) {
+               enforcePermissions = was
+       }(enforcePermissions)
+       enforcePermissions = false
+
+       defer func(orig *bufferPool) {
+               bufs = orig
+       }(bufs)
+       bufs = newBufferPool(1, BlockSize)
+       defer bufs.Put(bufs.Get(BlockSize))
+
+       KeepVM = MakeTestVolumeManager(2)
+       defer KeepVM.Close()
+
+       if err := KeepVM.AllWritable()[0].Put(TestHash, TestBlock); err != nil {
+               t.Error(err)
+       }
+
+       resp := &notifyingResponseRecorder{
+               ResponseRecorder: httptest.NewRecorder(),
+               closer:           make(chan bool, 1),
+       }
+       if _, ok := http.ResponseWriter(resp).(http.CloseNotifier); !ok {
+               t.Fatal("notifyingResponseRecorder is broken")
+       }
+       // If anyone asks, the client has disconnected.
+       resp.closer <- true
+
+       ok := make(chan struct{})
+       go func() {
+               req, _ := http.NewRequest("GET", fmt.Sprintf("/%s+%d", TestHash, len(TestBlock)), nil)
+               (&LoggingRESTRouter{MakeRESTRouter()}).ServeHTTP(resp, req)
+               ok <- struct{}{}
+       }()
+
+       select {
+       case <-time.After(20 * time.Second):
+               t.Fatal("request took >20s, close notifier must be broken")
+       case <-ok:
+       }
+
+       ExpectStatusCode(t, "client disconnect", http.StatusServiceUnavailable, resp.ResponseRecorder)
+       for i, v := range KeepVM.AllWritable() {
+               if calls := v.(*MockVolume).called["GET"]; calls != 0 {
+                       t.Errorf("volume %d got %d calls, expected 0", i, calls)
+               }
+       }
+}
+
 // Invoke the GetBlockHandler a bunch of times to test for bufferpool resource
 // leak.
 func TestGetHandlerNoBufferleak(t *testing.T) {
@@ -893,7 +983,7 @@ func TestGetHandlerNoBufferleak(t *testing.T) {
        defer KeepVM.Close()
 
        vols := KeepVM.AllWritable()
-       if err := vols[0].Put(TEST_HASH, TEST_BLOCK); err != nil {
+       if err := vols[0].Put(TestHash, TestBlock); err != nil {
                t.Error(err)
        }
 
@@ -902,7 +992,7 @@ func TestGetHandlerNoBufferleak(t *testing.T) {
                for i := 0; i < maxBuffers+1; i++ {
                        // Unauthenticated request, unsigned locator
                        // => OK
-                       unsignedLocator := "/" + TEST_HASH
+                       unsignedLocator := "/" + TestHash
                        response := IssueRequest(
                                &RequestTester{
                                        method: "GET",
@@ -912,7 +1002,7 @@ func TestGetHandlerNoBufferleak(t *testing.T) {
                                "Unauthenticated request, unsigned locator", http.StatusOK, response)
                        ExpectBody(t,
                                "Unauthenticated request, unsigned locator",
-                               string(TEST_BLOCK),
+                               string(TestBlock),
                                response)
                }
                ok <- true
@@ -924,3 +1014,122 @@ func TestGetHandlerNoBufferleak(t *testing.T) {
        case <-ok:
        }
 }
+
+func TestPutReplicationHeader(t *testing.T) {
+       defer teardown()
+
+       KeepVM = MakeTestVolumeManager(2)
+       defer KeepVM.Close()
+
+       resp := IssueRequest(&RequestTester{
+               method:      "PUT",
+               uri:         "/" + TestHash,
+               requestBody: TestBlock,
+       })
+       if r := resp.Header().Get("X-Keep-Replicas-Stored"); r != "1" {
+               t.Errorf("Got X-Keep-Replicas-Stored: %q, expected %q", r, "1")
+       }
+}
+
+func TestUntrashHandler(t *testing.T) {
+       defer teardown()
+
+       // Set up Keep volumes
+       KeepVM = MakeTestVolumeManager(2)
+       defer KeepVM.Close()
+       vols := KeepVM.AllWritable()
+       vols[0].Put(TestHash, TestBlock)
+
+       dataManagerToken = "DATA MANAGER TOKEN"
+
+       // unauthenticatedReq => UnauthorizedError
+       unauthenticatedReq := &RequestTester{
+               method: "PUT",
+               uri:    "/untrash/" + TestHash,
+       }
+       response := IssueRequest(unauthenticatedReq)
+       ExpectStatusCode(t,
+               "Unauthenticated request",
+               UnauthorizedError.HTTPCode,
+               response)
+
+       // notDataManagerReq => UnauthorizedError
+       notDataManagerReq := &RequestTester{
+               method:   "PUT",
+               uri:      "/untrash/" + TestHash,
+               apiToken: knownToken,
+       }
+
+       response = IssueRequest(notDataManagerReq)
+       ExpectStatusCode(t,
+               "Non-datamanager token",
+               UnauthorizedError.HTTPCode,
+               response)
+
+       // datamanagerWithBadHashReq => StatusBadRequest
+       datamanagerWithBadHashReq := &RequestTester{
+               method:   "PUT",
+               uri:      "/untrash/thisisnotalocator",
+               apiToken: dataManagerToken,
+       }
+       response = IssueRequest(datamanagerWithBadHashReq)
+       ExpectStatusCode(t,
+               "Bad locator in untrash request",
+               http.StatusBadRequest,
+               response)
+
+       // datamanagerWrongMethodReq => StatusBadRequest
+       datamanagerWrongMethodReq := &RequestTester{
+               method:   "GET",
+               uri:      "/untrash/" + TestHash,
+               apiToken: dataManagerToken,
+       }
+       response = IssueRequest(datamanagerWrongMethodReq)
+       ExpectStatusCode(t,
+               "Only PUT method is supported for untrash",
+               http.StatusBadRequest,
+               response)
+
+       // datamanagerReq => StatusOK
+       datamanagerReq := &RequestTester{
+               method:   "PUT",
+               uri:      "/untrash/" + TestHash,
+               apiToken: dataManagerToken,
+       }
+       response = IssueRequest(datamanagerReq)
+       ExpectStatusCode(t,
+               "",
+               http.StatusOK,
+               response)
+       expected := "Successfully untrashed on: [MockVolume],[MockVolume]"
+       if response.Body.String() != expected {
+               t.Errorf(
+                       "Untrash response mismatched: expected %s, got:\n%s",
+                       expected, response.Body.String())
+       }
+}
+
+func TestUntrashHandlerWithNoWritableVolumes(t *testing.T) {
+       defer teardown()
+
+       // Set up readonly Keep volumes
+       vols := []*MockVolume{CreateMockVolume(), CreateMockVolume()}
+       vols[0].Readonly = true
+       vols[1].Readonly = true
+       KeepVM = MakeRRVolumeManager([]Volume{vols[0], vols[1]})
+       defer KeepVM.Close()
+
+       dataManagerToken = "DATA MANAGER TOKEN"
+
+       // datamanagerReq => StatusOK
+       datamanagerReq := &RequestTester{
+               method:   "PUT",
+               uri:      "/untrash/" + TestHash,
+               apiToken: dataManagerToken,
+       }
+       response := IssueRequest(datamanagerReq)
+       ExpectStatusCode(t,
+               "No writable volumes",
+               http.StatusNotFound,
+               response)
+}