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Add consistency test for ClientInfo update failure in PushPull (#1000)
The test case simulates a partial failure in PushPull logic, exposing the current limitation in change validation. By implementing this test, we aim to improve the robustness of our system against duplicate changes and maintain data consistency across partial failures. To ensure idempotency of duplicate operations and prevent unintended consequences, we need to implement additional validation beyond ClientSeq. --------- Co-authored-by: kokodak <kokodakadokok@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,314 @@ | ||
| /* | ||
| * Copyright 2024 The Yorkie Authors. All rights reserved. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package packs_test | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/hex" | ||
| "errors" | ||
| "fmt" | ||
| "log" | ||
| "net/http" | ||
| "os" | ||
| "testing" | ||
|
|
||
| "connectrpc.com/connect" | ||
| "github.com/stretchr/testify/assert" | ||
|
|
||
| "github.com/yorkie-team/yorkie/api/converter" | ||
| "github.com/yorkie-team/yorkie/api/types" | ||
| api "github.com/yorkie-team/yorkie/api/yorkie/v1" | ||
| "github.com/yorkie-team/yorkie/api/yorkie/v1/v1connect" | ||
| "github.com/yorkie-team/yorkie/client" | ||
| "github.com/yorkie-team/yorkie/pkg/document" | ||
| "github.com/yorkie-team/yorkie/pkg/document/time" | ||
| "github.com/yorkie-team/yorkie/server/backend" | ||
| "github.com/yorkie-team/yorkie/server/backend/database" | ||
| "github.com/yorkie-team/yorkie/server/backend/database/mongo" | ||
| "github.com/yorkie-team/yorkie/server/backend/housekeeping" | ||
| "github.com/yorkie-team/yorkie/server/clients" | ||
| "github.com/yorkie-team/yorkie/server/documents" | ||
| "github.com/yorkie-team/yorkie/server/packs" | ||
| "github.com/yorkie-team/yorkie/server/profiling/prometheus" | ||
| "github.com/yorkie-team/yorkie/server/rpc" | ||
| "github.com/yorkie-team/yorkie/test/helper" | ||
| ) | ||
|
|
||
| var ( | ||
| // ErrUpdateClientInfoFailed occurs when updating ClientInfo failed | ||
| // for testing purposes. | ||
| ErrUpdateClientInfoFailed = errors.New("updating clientinfo failed") | ||
| ) | ||
|
|
||
| var ( | ||
| testRPCServer *rpc.Server | ||
| testRPCAddr = fmt.Sprintf("localhost:%d", helper.RPCPort) | ||
| testClient v1connect.YorkieServiceClient | ||
| testBackend *backend.Backend | ||
| testMockDB *MockDB | ||
| ) | ||
|
|
||
| // MockDB represents a mock database for testing purposes | ||
| type MockDB struct { | ||
| database.Database | ||
| mockUpdateClientInfoAfterPushPull func(context.Context, *database.ClientInfo, *database.DocInfo) error | ||
| } | ||
|
|
||
| // NewMockDB returns a mock database with a real database | ||
| func NewMockDB(database database.Database) *MockDB { | ||
| return &MockDB{ | ||
| Database: database, | ||
| } | ||
| } | ||
|
|
||
| func (m *MockDB) UpdateClientInfoAfterPushPull( | ||
| ctx context.Context, | ||
| clientInfo *database.ClientInfo, | ||
| docInfo *database.DocInfo, | ||
| ) error { | ||
| if m.mockUpdateClientInfoAfterPushPull != nil { | ||
| return m.mockUpdateClientInfoAfterPushPull(ctx, clientInfo, docInfo) | ||
| } | ||
| return m.Database.UpdateClientInfoAfterPushPull(ctx, clientInfo, docInfo) | ||
| } | ||
|
|
||
| func TestMain(m *testing.M) { | ||
| met, err := prometheus.NewMetrics() | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
|
||
| testBackend, err = backend.New( | ||
| &backend.Config{ | ||
| AdminUser: helper.AdminUser, | ||
| AdminPassword: helper.AdminPassword, | ||
| UseDefaultProject: helper.UseDefaultProject, | ||
| ClientDeactivateThreshold: helper.ClientDeactivateThreshold, | ||
| SnapshotThreshold: helper.SnapshotThreshold, | ||
| AuthWebhookCacheSize: helper.AuthWebhookSize, | ||
| ProjectInfoCacheSize: helper.ProjectInfoCacheSize, | ||
| ProjectInfoCacheTTL: helper.ProjectInfoCacheTTL.String(), | ||
| AdminTokenDuration: helper.AdminTokenDuration, | ||
| }, &mongo.Config{ | ||
| ConnectionURI: helper.MongoConnectionURI, | ||
| YorkieDatabase: helper.TestDBName(), | ||
| ConnectionTimeout: helper.MongoConnectionTimeout, | ||
| PingTimeout: helper.MongoPingTimeout, | ||
| }, &housekeeping.Config{ | ||
| Interval: helper.HousekeepingInterval.String(), | ||
| CandidatesLimitPerProject: helper.HousekeepingCandidatesLimitPerProject, | ||
| ProjectFetchSize: helper.HousekeepingProjectFetchSize, | ||
| }, met, | ||
| ) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| testMockDB = NewMockDB(testBackend.DB) | ||
| testBackend.DB = testMockDB | ||
|
|
||
| project, err := testBackend.DB.FindProjectInfoByID( | ||
| context.Background(), | ||
| database.DefaultProjectID, | ||
| ) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
|
||
| testRPCServer, err = rpc.NewServer( | ||
| &rpc.Config{ | ||
| Port: helper.RPCPort, | ||
| }, testBackend, | ||
| ) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
|
||
| if err = testRPCServer.Start(); err != nil { | ||
| log.Fatalf("failed rpc listen: %s\n", err) | ||
| } | ||
| if err = helper.WaitForServerToStart(testRPCAddr); err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
|
||
| authInterceptor := client.NewAuthInterceptor(project.PublicKey, "") | ||
|
|
||
| conn := http.DefaultClient | ||
| testClient = v1connect.NewYorkieServiceClient( | ||
| conn, | ||
| "http://"+testRPCAddr, | ||
| connect.WithInterceptors(authInterceptor), | ||
| ) | ||
|
|
||
| code := m.Run() | ||
|
|
||
| if err := testBackend.Shutdown(); err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| testRPCServer.Shutdown(true) | ||
| os.Exit(code) | ||
| } | ||
|
|
||
| func triggerErrUpdateClientInfo(on bool) { | ||
| if on { | ||
| testMockDB.mockUpdateClientInfoAfterPushPull = func( | ||
| context.Context, | ||
| *database.ClientInfo, | ||
| *database.DocInfo, | ||
| ) error { | ||
| return ErrUpdateClientInfoFailed | ||
| } | ||
| } else { | ||
| testMockDB.mockUpdateClientInfoAfterPushPull = nil | ||
| } | ||
| } | ||
|
|
||
| func TestPacks(t *testing.T) { | ||
| t.Run("cannot detect change duplication due to clientInfo update failure", func(t *testing.T) { | ||
| t.Skip("remove this after resolving pushpull consistency problem") | ||
| ctx := context.Background() | ||
|
|
||
| projectInfo, err := testBackend.DB.FindProjectInfoByID( | ||
| ctx, | ||
| database.DefaultProjectID, | ||
| ) | ||
| assert.NoError(t, err) | ||
| project := projectInfo.ToProject() | ||
|
|
||
| triggerErrUpdateClientInfo(false) | ||
|
|
||
| activateResp, err := testClient.ActivateClient( | ||
| context.Background(), | ||
| connect.NewRequest(&api.ActivateClientRequest{ClientKey: helper.TestDocKey(t).String()})) | ||
| assert.NoError(t, err) | ||
|
|
||
| clientID, _ := hex.DecodeString(activateResp.Msg.ClientId) | ||
| resPack, err := testClient.AttachDocument( | ||
| context.Background(), | ||
| connect.NewRequest(&api.AttachDocumentRequest{ | ||
| ClientId: activateResp.Msg.ClientId, | ||
| ChangePack: &api.ChangePack{ | ||
| DocumentKey: helper.TestDocKey(t).String(), | ||
| Checkpoint: &api.Checkpoint{ServerSeq: 0, ClientSeq: 1}, | ||
| Changes: []*api.Change{ | ||
| { | ||
| Id: &api.ChangeID{ | ||
| ClientSeq: 1, | ||
| Lamport: 1, | ||
| ActorId: clientID, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| )) | ||
| assert.NoError(t, err) | ||
|
|
||
| actorID, err := time.ActorIDFromBytes(clientID) | ||
| assert.NoError(t, err) | ||
|
|
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| docID := types.ID(resPack.Msg.DocumentId) | ||
| docRefKey := types.DocRefKey{ | ||
| ProjectID: project.ID, | ||
| DocID: docID, | ||
| } | ||
|
|
||
| // 0. Check docInfo.ServerSeq and clientInfo.Checkpoint | ||
| docInfo, err := documents.FindDocInfoByRefKey(ctx, testBackend, docRefKey) | ||
| assert.NoError(t, err) | ||
| assert.Equal(t, int64(1), docInfo.ServerSeq) | ||
|
|
||
| clientInfo, err := clients.FindActiveClientInfo(ctx, testBackend.DB, types.ClientRefKey{ | ||
| ProjectID: project.ID, | ||
| ClientID: types.IDFromActorID(actorID), | ||
| }) | ||
| assert.NoError(t, err) | ||
| assert.Equal(t, int64(1), clientInfo.Checkpoint(docID).ServerSeq) | ||
| assert.Equal(t, uint32(1), clientInfo.Checkpoint(docID).ClientSeq) | ||
|
|
||
| // 1. Create a ChangePack with a single Change | ||
| pack, err := converter.FromChangePack(&api.ChangePack{ | ||
| DocumentKey: helper.TestDocKey(t).String(), | ||
| Checkpoint: &api.Checkpoint{ServerSeq: 0, ClientSeq: 2}, | ||
| Changes: []*api.Change{ | ||
| { | ||
| Id: &api.ChangeID{ | ||
| ClientSeq: 2, | ||
| Lamport: 2, | ||
| ActorId: clientID, | ||
| }, | ||
| }, | ||
| }, | ||
| }) | ||
| assert.NoError(t, err) | ||
|
|
||
| // 2-1. An arbitrary failure occurs while updating clientInfo | ||
| triggerErrUpdateClientInfo(true) | ||
|
|
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| _, err = packs.PushPull(ctx, testBackend, project, clientInfo, docInfo, pack, packs.PushPullOptions{ | ||
| Mode: types.SyncModePushPull, | ||
| Status: document.StatusAttached, | ||
| }) | ||
| assert.ErrorIs(t, err, ErrUpdateClientInfoFailed) | ||
|
|
||
| triggerErrUpdateClientInfo(false) | ||
|
|
||
| // 2-2. pushed change is stored in the database | ||
| changes, err := packs.FindChanges(ctx, testBackend, docInfo, 2, 2) | ||
| assert.NoError(t, err) | ||
| assert.Len(t, changes, 1) | ||
|
|
||
| // 2-3. docInfo.ServerSeq increases from 1 to 2 | ||
| docInfo, err = documents.FindDocInfoByRefKey(ctx, testBackend, docRefKey) | ||
| assert.NoError(t, err) | ||
| assert.Equal(t, int64(2), docInfo.ServerSeq) | ||
|
|
||
| // 2-4. clientInfo.Checkpoint has not been updated | ||
| clientInfo, err = clients.FindActiveClientInfo(ctx, testBackend.DB, types.ClientRefKey{ | ||
| ProjectID: project.ID, | ||
| ClientID: types.IDFromActorID(actorID), | ||
| }) | ||
| assert.NoError(t, err) | ||
| assert.Equal(t, int64(1), clientInfo.Checkpoint(docID).ServerSeq) | ||
| assert.Equal(t, uint32(1), clientInfo.Checkpoint(docID).ClientSeq) | ||
|
|
||
| // 3-1. A duplicate request is sent | ||
| _, err = packs.PushPull(ctx, testBackend, project, clientInfo, docInfo, pack, packs.PushPullOptions{ | ||
| Mode: types.SyncModePushPull, | ||
| Status: document.StatusAttached, | ||
| }) | ||
| assert.NoError(t, err) | ||
|
|
||
| // 3-2. duplicated change is not stored in the database | ||
| changes, err = packs.FindChanges(ctx, testBackend, docInfo, 3, 3) | ||
| assert.NoError(t, err) | ||
| assert.Len(t, changes, 0) | ||
|
|
||
| // 3-3. The server should detect the duplication and not update docInfo.ServerSeq | ||
| docInfo, err = documents.FindDocInfoByRefKey(ctx, testBackend, docRefKey) | ||
| assert.NoError(t, err) | ||
| assert.Equal(t, int64(2), docInfo.ServerSeq) | ||
|
|
||
| // 3-4. clientInfo.Checkpoint has been updated properly | ||
| clientInfo, err = clients.FindActiveClientInfo(ctx, testBackend.DB, types.ClientRefKey{ | ||
| ProjectID: project.ID, | ||
| ClientID: types.IDFromActorID(actorID), | ||
| }) | ||
| assert.NoError(t, err) | ||
| assert.Equal(t, int64(2), clientInfo.Checkpoint(docID).ServerSeq) | ||
| assert.Equal(t, uint32(2), clientInfo.Checkpoint(docID).ClientSeq) | ||
| }) | ||
| } |