0188dfdb-d61a-4522-b858-d93ddfebefc8

Committed 21 Jun 2023 09:47PM UTC coverage: 57.266% (-0.03%) from 57.299%

Build # 0188dfdb-d61a-4522-b858-d93ddfebefc8

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web-flow

Commit Message

Update consistency level for cassandra visibility (#5330)

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78.94

/common/persistence/executionManager.go

// Copyright (c) 2017-2020 Uber Technologies, Inc.
// Portions of the Software are attributed to Copyright (c) 2020 Temporal Technologies Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package persistence

import (
        "context"
        "time"

        "github.com/uber/cadence/common"
        "github.com/uber/cadence/common/log"
        "github.com/uber/cadence/common/types"
)

type (
        // executionManagerImpl implements ExecutionManager based on ExecutionStore, statsComputer and PayloadSerializer
        executionManagerImpl struct {
                serializer    PayloadSerializer
                persistence   ExecutionStore
                statsComputer statsComputer
                logger        log.Logger
        }
)

var _ ExecutionManager = (*executionManagerImpl)(nil)

// NewExecutionManagerImpl returns new ExecutionManager
func NewExecutionManagerImpl(
        persistence ExecutionStore,
        logger log.Logger,
) ExecutionManager {

        return &executionManagerImpl{
                serializer:    NewPayloadSerializer(),
                persistence:   persistence,
                statsComputer: statsComputer{},
                logger:        logger,
        }
}

func (m *executionManagerImpl) GetName() string {
        return m.persistence.GetName()
}

func (m *executionManagerImpl) GetShardID() int {
        return m.persistence.GetShardID()
}

// The below three APIs are related to serialization/deserialization
func (m *executionManagerImpl) GetWorkflowExecution(
        ctx context.Context,
        request *GetWorkflowExecutionRequest,
) (*GetWorkflowExecutionResponse, error) {

        internalRequest := &InternalGetWorkflowExecutionRequest{
                DomainID:  request.DomainID,
                Execution: request.Execution,
        }
        response, err := m.persistence.GetWorkflowExecution(ctx, internalRequest)
        if err != nil {
                return nil, err
        }
        newResponse := &GetWorkflowExecutionResponse{
                State: &WorkflowMutableState{
                        TimerInfos:         response.State.TimerInfos,
                        RequestCancelInfos: response.State.RequestCancelInfos,
                        SignalInfos:        response.State.SignalInfos,
                        SignalRequestedIDs: response.State.SignalRequestedIDs,
                        ReplicationState:   response.State.ReplicationState, // TODO: remove this after all 2DC workflows complete
                        Checksum:           response.State.Checksum,
                },
        }

        newResponse.State.ActivityInfos, err = m.DeserializeActivityInfos(response.State.ActivityInfos)
        if err != nil {
                return nil, err
        }
        newResponse.State.ChildExecutionInfos, err = m.DeserializeChildExecutionInfos(response.State.ChildExecutionInfos)
        if err != nil {
                return nil, err
        }
        newResponse.State.BufferedEvents, err = m.DeserializeBufferedEvents(response.State.BufferedEvents)
        if err != nil {
                return nil, err
        }
        newResponse.State.ExecutionInfo, newResponse.State.ExecutionStats, err = m.DeserializeExecutionInfo(response.State.ExecutionInfo)
        if err != nil {
                return nil, err
        }
        versionHistories, err := m.DeserializeVersionHistories(response.State.VersionHistories)
        if err != nil {
                return nil, err
        }
        newResponse.State.VersionHistories = versionHistories
        newResponse.MutableStateStats = m.statsComputer.computeMutableStateStats(response)

        return newResponse, nil
}

func (m *executionManagerImpl) DeserializeExecutionInfo(
        info *InternalWorkflowExecutionInfo,
) (*WorkflowExecutionInfo, *ExecutionStats, error) {

        completionEvent, err := m.serializer.DeserializeEvent(info.CompletionEvent)
        if err != nil {
                return nil, nil, err
        }

        autoResetPoints, err := m.serializer.DeserializeResetPoints(info.AutoResetPoints)
        if err != nil {
                return nil, nil, err
        }

        newInfo := &WorkflowExecutionInfo{
                CompletionEvent: completionEvent,

                DomainID:                           info.DomainID,
                WorkflowID:                         info.WorkflowID,
                RunID:                              info.RunID,
                FirstExecutionRunID:                info.FirstExecutionRunID,
                ParentDomainID:                     info.ParentDomainID,
                ParentWorkflowID:                   info.ParentWorkflowID,
                ParentRunID:                        info.ParentRunID,
                InitiatedID:                        info.InitiatedID,
                CompletionEventBatchID:             info.CompletionEventBatchID,
                TaskList:                           info.TaskList,
                IsCron:                             len(info.CronSchedule) > 0,
                WorkflowTypeName:                   info.WorkflowTypeName,
                WorkflowTimeout:                    int32(info.WorkflowTimeout.Seconds()),
                DecisionStartToCloseTimeout:        int32(info.DecisionStartToCloseTimeout.Seconds()),
                ExecutionContext:                   info.ExecutionContext,
                State:                              info.State,
                CloseStatus:                        info.CloseStatus,
                LastFirstEventID:                   info.LastFirstEventID,
                LastEventTaskID:                    info.LastEventTaskID,
                NextEventID:                        info.NextEventID,
                LastProcessedEvent:                 info.LastProcessedEvent,
                StartTimestamp:                     info.StartTimestamp,
                LastUpdatedTimestamp:               info.LastUpdatedTimestamp,
                CreateRequestID:                    info.CreateRequestID,
                SignalCount:                        info.SignalCount,
                DecisionVersion:                    info.DecisionVersion,
                DecisionScheduleID:                 info.DecisionScheduleID,
                DecisionStartedID:                  info.DecisionStartedID,
                DecisionRequestID:                  info.DecisionRequestID,
                DecisionTimeout:                    int32(info.DecisionTimeout.Seconds()),
                DecisionAttempt:                    info.DecisionAttempt,
                DecisionStartedTimestamp:           info.DecisionStartedTimestamp.UnixNano(),
                DecisionScheduledTimestamp:         info.DecisionScheduledTimestamp.UnixNano(),
                DecisionOriginalScheduledTimestamp: info.DecisionOriginalScheduledTimestamp.UnixNano(),
                CancelRequested:                    info.CancelRequested,
                CancelRequestID:                    info.CancelRequestID,
                StickyTaskList:                     info.StickyTaskList,
                StickyScheduleToStartTimeout:       int32(info.StickyScheduleToStartTimeout.Seconds()),
                ClientLibraryVersion:               info.ClientLibraryVersion,
                ClientFeatureVersion:               info.ClientFeatureVersion,
                ClientImpl:                         info.ClientImpl,
                Attempt:                            info.Attempt,
                HasRetryPolicy:                     info.HasRetryPolicy,
                InitialInterval:                    int32(info.InitialInterval.Seconds()),
                BackoffCoefficient:                 info.BackoffCoefficient,
                MaximumInterval:                    int32(info.MaximumInterval.Seconds()),
                ExpirationTime:                     info.ExpirationTime,
                MaximumAttempts:                    info.MaximumAttempts,
                NonRetriableErrors:                 info.NonRetriableErrors,
                BranchToken:                        info.BranchToken,
                CronSchedule:                       info.CronSchedule,
                ExpirationSeconds:                  int32(info.ExpirationInterval.Seconds()),
                AutoResetPoints:                    autoResetPoints,
                SearchAttributes:                   info.SearchAttributes,
                Memo:                               info.Memo,
                PartitionConfig:                    info.PartitionConfig,
        }
        newStats := &ExecutionStats{
                HistorySize: info.HistorySize,
        }
        return newInfo, newStats, nil
}

func (m *executionManagerImpl) DeserializeBufferedEvents(
        blobs []*DataBlob,
) ([]*types.HistoryEvent, error) {

        events := make([]*types.HistoryEvent, 0)
        for _, b := range blobs {
                history, err := m.serializer.DeserializeBatchEvents(b)
                if err != nil {
                        return nil, err
                }
                events = append(events, history...)
        }
        return events, nil
}

func (m *executionManagerImpl) DeserializeChildExecutionInfos(
        infos map[int64]*InternalChildExecutionInfo,
) (map[int64]*ChildExecutionInfo, error) {

        newInfos := make(map[int64]*ChildExecutionInfo)
        for k, v := range infos {
                initiatedEvent, err := m.serializer.DeserializeEvent(v.InitiatedEvent)
                if err != nil {
                        return nil, err
                }
                startedEvent, err := m.serializer.DeserializeEvent(v.StartedEvent)
                if err != nil {
                        return nil, err
                }
                c := &ChildExecutionInfo{
                        InitiatedEvent: initiatedEvent,
                        StartedEvent:   startedEvent,

                        Version:               v.Version,
                        InitiatedID:           v.InitiatedID,
                        InitiatedEventBatchID: v.InitiatedEventBatchID,
                        StartedID:             v.StartedID,
                        StartedWorkflowID:     v.StartedWorkflowID,
                        StartedRunID:          v.StartedRunID,
                        CreateRequestID:       v.CreateRequestID,
                        DomainID:              v.DomainID,
                        DomainNameDEPRECATED:  v.DomainNameDEPRECATED,
                        WorkflowTypeName:      v.WorkflowTypeName,
                        ParentClosePolicy:     v.ParentClosePolicy,
                }

                // Needed for backward compatibility reason.
                // ChildWorkflowExecutionStartedEvent was only used by transfer queue processing of StartChildWorkflow.
                // Updated the code to instead directly read WorkflowId and RunId from mutable state
                // Existing mutable state won't have those values set so instead use started event to set StartedWorkflowID and
                // StartedRunID on the mutable state before passing it to application
                if startedEvent != nil && startedEvent.ChildWorkflowExecutionStartedEventAttributes != nil &&
                        startedEvent.ChildWorkflowExecutionStartedEventAttributes.WorkflowExecution != nil {
                        startedExecution := startedEvent.ChildWorkflowExecutionStartedEventAttributes.WorkflowExecution
                        c.StartedWorkflowID = startedExecution.GetWorkflowID()
                        c.StartedRunID = startedExecution.GetRunID()
                }
                newInfos[k] = c
        }
        return newInfos, nil
}

func (m *executionManagerImpl) DeserializeActivityInfos(
        infos map[int64]*InternalActivityInfo,
) (map[int64]*ActivityInfo, error) {

        newInfos := make(map[int64]*ActivityInfo)
        for k, v := range infos {
                scheduledEvent, err := m.serializer.DeserializeEvent(v.ScheduledEvent)
                if err != nil {
                        return nil, err
                }
                startedEvent, err := m.serializer.DeserializeEvent(v.StartedEvent)
                if err != nil {
                        return nil, err
                }
                a := &ActivityInfo{
                        ScheduledEvent: scheduledEvent,
                        StartedEvent:   startedEvent,

                        Version:                                 v.Version,
                        ScheduleID:                              v.ScheduleID,
                        ScheduledEventBatchID:                   v.ScheduledEventBatchID,
                        ScheduledTime:                           v.ScheduledTime,
                        StartedID:                               v.StartedID,
                        StartedTime:                             v.StartedTime,
                        ActivityID:                              v.ActivityID,
                        RequestID:                               v.RequestID,
                        Details:                                 v.Details,
                        ScheduleToStartTimeout:                  int32(v.ScheduleToStartTimeout.Seconds()),
                        ScheduleToCloseTimeout:                  int32(v.ScheduleToCloseTimeout.Seconds()),
                        StartToCloseTimeout:                     int32(v.StartToCloseTimeout.Seconds()),
                        HeartbeatTimeout:                        int32(v.HeartbeatTimeout.Seconds()),
                        CancelRequested:                         v.CancelRequested,
                        CancelRequestID:                         v.CancelRequestID,
                        LastHeartBeatUpdatedTime:                v.LastHeartBeatUpdatedTime,
                        TimerTaskStatus:                         v.TimerTaskStatus,
                        Attempt:                                 v.Attempt,
                        DomainID:                                v.DomainID,
                        StartedIdentity:                         v.StartedIdentity,
                        TaskList:                                v.TaskList,
                        HasRetryPolicy:                          v.HasRetryPolicy,
                        InitialInterval:                         int32(v.InitialInterval.Seconds()),
                        BackoffCoefficient:                      v.BackoffCoefficient,
                        MaximumInterval:                         int32(v.MaximumInterval.Seconds()),
                        ExpirationTime:                          v.ExpirationTime,
                        MaximumAttempts:                         v.MaximumAttempts,
                        NonRetriableErrors:                      v.NonRetriableErrors,
                        LastFailureReason:                       v.LastFailureReason,
                        LastWorkerIdentity:                      v.LastWorkerIdentity,
                        LastFailureDetails:                      v.LastFailureDetails,
                        LastHeartbeatTimeoutVisibilityInSeconds: v.LastHeartbeatTimeoutVisibilityInSeconds,
                }
                newInfos[k] = a
        }
        return newInfos, nil
}

func (m *executionManagerImpl) UpdateWorkflowExecution(
        ctx context.Context,
        request *UpdateWorkflowExecutionRequest,
) (*UpdateWorkflowExecutionResponse, error) {

        serializedWorkflowMutation, err := m.SerializeWorkflowMutation(&request.UpdateWorkflowMutation, request.Encoding)
        if err != nil {
                return nil, err
        }
        var serializedNewWorkflowSnapshot *InternalWorkflowSnapshot
        if request.NewWorkflowSnapshot != nil {
                serializedNewWorkflowSnapshot, err = m.SerializeWorkflowSnapshot(request.NewWorkflowSnapshot, request.Encoding)
                if err != nil {
                        return nil, err
                }
        }

        newRequest := &InternalUpdateWorkflowExecutionRequest{
                RangeID: request.RangeID,

                Mode: request.Mode,

                UpdateWorkflowMutation: *serializedWorkflowMutation,
                NewWorkflowSnapshot:    serializedNewWorkflowSnapshot,
        }
        msuss := m.statsComputer.computeMutableStateUpdateStats(newRequest)
        err = m.persistence.UpdateWorkflowExecution(ctx, newRequest)
        if err != nil {
                return nil, err
        }
        return &UpdateWorkflowExecutionResponse{MutableStateUpdateSessionStats: msuss}, nil
}

func (m *executionManagerImpl) SerializeUpsertChildExecutionInfos(
        infos []*ChildExecutionInfo,
        encoding common.EncodingType,
) ([]*InternalChildExecutionInfo, error) {

        newInfos := make([]*InternalChildExecutionInfo, 0)
        for _, v := range infos {
                initiatedEvent, err := m.serializer.SerializeEvent(v.InitiatedEvent, encoding)
                if err != nil {
                        return nil, err
                }
                startedEvent, err := m.serializer.SerializeEvent(v.StartedEvent, encoding)
                if err != nil {
                        return nil, err
                }
                i := &InternalChildExecutionInfo{
                        InitiatedEvent: initiatedEvent,
                        StartedEvent:   startedEvent,

                        Version:               v.Version,
                        InitiatedID:           v.InitiatedID,
                        InitiatedEventBatchID: v.InitiatedEventBatchID,
                        CreateRequestID:       v.CreateRequestID,
                        StartedID:             v.StartedID,
                        StartedWorkflowID:     v.StartedWorkflowID,
                        StartedRunID:          v.StartedRunID,
                        DomainID:              v.DomainID,
                        DomainNameDEPRECATED:  v.DomainNameDEPRECATED,
                        WorkflowTypeName:      v.WorkflowTypeName,
                        ParentClosePolicy:     v.ParentClosePolicy,
                }
                newInfos = append(newInfos, i)
        }
        return newInfos, nil
}

func (m *executionManagerImpl) SerializeUpsertActivityInfos(
        infos []*ActivityInfo,
        encoding common.EncodingType,
) ([]*InternalActivityInfo, error) {

        newInfos := make([]*InternalActivityInfo, 0)
        for _, v := range infos {
                scheduledEvent, err := m.serializer.SerializeEvent(v.ScheduledEvent, encoding)
                if err != nil {
                        return nil, err
                }
                startedEvent, err := m.serializer.SerializeEvent(v.StartedEvent, encoding)
                if err != nil {
                        return nil, err
                }
                i := &InternalActivityInfo{
                        Version:                                 v.Version,
                        ScheduleID:                              v.ScheduleID,
                        ScheduledEventBatchID:                   v.ScheduledEventBatchID,
                        ScheduledEvent:                          scheduledEvent,
                        ScheduledTime:                           v.ScheduledTime,
                        StartedID:                               v.StartedID,
                        StartedEvent:                            startedEvent,
                        StartedTime:                             v.StartedTime,
                        ActivityID:                              v.ActivityID,
                        RequestID:                               v.RequestID,
                        Details:                                 v.Details,
                        ScheduleToStartTimeout:                  common.SecondsToDuration(int64(v.ScheduleToStartTimeout)),
                        ScheduleToCloseTimeout:                  common.SecondsToDuration(int64(v.ScheduleToCloseTimeout)),
                        StartToCloseTimeout:                     common.SecondsToDuration(int64(v.StartToCloseTimeout)),
                        HeartbeatTimeout:                        common.SecondsToDuration(int64(v.HeartbeatTimeout)),
                        CancelRequested:                         v.CancelRequested,
                        CancelRequestID:                         v.CancelRequestID,
                        LastHeartBeatUpdatedTime:                v.LastHeartBeatUpdatedTime,
                        TimerTaskStatus:                         v.TimerTaskStatus,
                        Attempt:                                 v.Attempt,
                        DomainID:                                v.DomainID,
                        StartedIdentity:                         v.StartedIdentity,
                        TaskList:                                v.TaskList,
                        HasRetryPolicy:                          v.HasRetryPolicy,
                        InitialInterval:                         common.SecondsToDuration(int64(v.InitialInterval)),
                        BackoffCoefficient:                      v.BackoffCoefficient,
                        MaximumInterval:                         common.SecondsToDuration(int64(v.MaximumInterval)),
                        ExpirationTime:                          v.ExpirationTime,
                        MaximumAttempts:                         v.MaximumAttempts,
                        NonRetriableErrors:                      v.NonRetriableErrors,
                        LastFailureReason:                       v.LastFailureReason,
                        LastWorkerIdentity:                      v.LastWorkerIdentity,
                        LastFailureDetails:                      v.LastFailureDetails,
                        LastHeartbeatTimeoutVisibilityInSeconds: v.LastHeartbeatTimeoutVisibilityInSeconds,
                }
                newInfos = append(newInfos, i)
        }
        return newInfos, nil
}

func (m *executionManagerImpl) SerializeExecutionInfo(
        info *WorkflowExecutionInfo,
        stats *ExecutionStats,
        encoding common.EncodingType,
) (*InternalWorkflowExecutionInfo, error) {

        if info == nil {
                return &InternalWorkflowExecutionInfo{}, nil
        }
        completionEvent, err := m.serializer.SerializeEvent(info.CompletionEvent, encoding)
        if err != nil {
                return nil, err
        }

        resetPoints, err := m.serializer.SerializeResetPoints(info.AutoResetPoints, encoding)
        if err != nil {
                return nil, err
        }

        return &InternalWorkflowExecutionInfo{
                DomainID:                           info.DomainID,
                WorkflowID:                         info.WorkflowID,
                RunID:                              info.RunID,
                FirstExecutionRunID:                info.FirstExecutionRunID,
                ParentDomainID:                     info.ParentDomainID,
                ParentWorkflowID:                   info.ParentWorkflowID,
                ParentRunID:                        info.ParentRunID,
                InitiatedID:                        info.InitiatedID,
                CompletionEventBatchID:             info.CompletionEventBatchID,
                CompletionEvent:                    completionEvent,
                TaskList:                           info.TaskList,
                WorkflowTypeName:                   info.WorkflowTypeName,
                WorkflowTimeout:                    common.SecondsToDuration(int64(info.WorkflowTimeout)),
                DecisionStartToCloseTimeout:        common.SecondsToDuration(int64(info.DecisionStartToCloseTimeout)),
                ExecutionContext:                   info.ExecutionContext,
                State:                              info.State,
                CloseStatus:                        info.CloseStatus,
                LastFirstEventID:                   info.LastFirstEventID,
                LastEventTaskID:                    info.LastEventTaskID,
                NextEventID:                        info.NextEventID,
                LastProcessedEvent:                 info.LastProcessedEvent,
                StartTimestamp:                     info.StartTimestamp,
                LastUpdatedTimestamp:               info.LastUpdatedTimestamp,
                CreateRequestID:                    info.CreateRequestID,
                SignalCount:                        info.SignalCount,
                DecisionVersion:                    info.DecisionVersion,
                DecisionScheduleID:                 info.DecisionScheduleID,
                DecisionStartedID:                  info.DecisionStartedID,
                DecisionRequestID:                  info.DecisionRequestID,
                DecisionTimeout:                    common.SecondsToDuration(int64(info.DecisionTimeout)),
                DecisionAttempt:                    info.DecisionAttempt,
                DecisionStartedTimestamp:           time.Unix(0, info.DecisionStartedTimestamp),
                DecisionScheduledTimestamp:         time.Unix(0, info.DecisionScheduledTimestamp),
                DecisionOriginalScheduledTimestamp: time.Unix(0, info.DecisionOriginalScheduledTimestamp),
                CancelRequested:                    info.CancelRequested,
                CancelRequestID:                    info.CancelRequestID,
                StickyTaskList:                     info.StickyTaskList,
                StickyScheduleToStartTimeout:       common.SecondsToDuration(int64(info.StickyScheduleToStartTimeout)),
                ClientLibraryVersion:               info.ClientLibraryVersion,
                ClientFeatureVersion:               info.ClientFeatureVersion,
                ClientImpl:                         info.ClientImpl,
                AutoResetPoints:                    resetPoints,
                Attempt:                            info.Attempt,
                HasRetryPolicy:                     info.HasRetryPolicy,
                InitialInterval:                    common.SecondsToDuration(int64(info.InitialInterval)),
                BackoffCoefficient:                 info.BackoffCoefficient,
                MaximumInterval:                    common.SecondsToDuration(int64(info.MaximumInterval)),
                ExpirationTime:                     info.ExpirationTime,
                MaximumAttempts:                    info.MaximumAttempts,
                NonRetriableErrors:                 info.NonRetriableErrors,
                BranchToken:                        info.BranchToken,
                CronSchedule:                       info.CronSchedule,
                ExpirationInterval:                 common.SecondsToDuration(int64(info.ExpirationSeconds)),
                Memo:                               info.Memo,
                SearchAttributes:                   info.SearchAttributes,
                PartitionConfig:                    info.PartitionConfig,

                // attributes which are not related to mutable state
                HistorySize: stats.HistorySize,
        }, nil
}

func (m *executionManagerImpl) ConflictResolveWorkflowExecution(
        ctx context.Context,
        request *ConflictResolveWorkflowExecutionRequest,
) (*ConflictResolveWorkflowExecutionResponse, error) {

        serializedResetWorkflowSnapshot, err := m.SerializeWorkflowSnapshot(&request.ResetWorkflowSnapshot, request.Encoding)
        if err != nil {
                return nil, err
        }
        var serializedCurrentWorkflowMutation *InternalWorkflowMutation
        if request.CurrentWorkflowMutation != nil {
                serializedCurrentWorkflowMutation, err = m.SerializeWorkflowMutation(request.CurrentWorkflowMutation, request.Encoding)
                if err != nil {
                        return nil, err
                }
        }
        var serializedNewWorkflowMutation *InternalWorkflowSnapshot
        if request.NewWorkflowSnapshot != nil {
                serializedNewWorkflowMutation, err = m.SerializeWorkflowSnapshot(request.NewWorkflowSnapshot, request.Encoding)
                if err != nil {
                        return nil, err
                }
        }

        newRequest := &InternalConflictResolveWorkflowExecutionRequest{
                RangeID: request.RangeID,

                Mode: request.Mode,

                ResetWorkflowSnapshot: *serializedResetWorkflowSnapshot,

                NewWorkflowSnapshot: serializedNewWorkflowMutation,

                CurrentWorkflowMutation: serializedCurrentWorkflowMutation,
        }
        msuss := m.statsComputer.computeMutableStateConflictResolveStats(newRequest)
        err = m.persistence.ConflictResolveWorkflowExecution(ctx, newRequest)
        if err != nil {
                return nil, err
        }
        return &ConflictResolveWorkflowExecutionResponse{MutableStateUpdateSessionStats: msuss}, nil
}

func (m *executionManagerImpl) CreateWorkflowExecution(
        ctx context.Context,
        request *CreateWorkflowExecutionRequest,
) (*CreateWorkflowExecutionResponse, error) {

        encoding := common.EncodingTypeThriftRW

        serializedNewWorkflowSnapshot, err := m.SerializeWorkflowSnapshot(&request.NewWorkflowSnapshot, encoding)
        if err != nil {
                return nil, err
        }

        newRequest := &InternalCreateWorkflowExecutionRequest{
                RangeID: request.RangeID,

                Mode: request.Mode,

                PreviousRunID:            request.PreviousRunID,
                PreviousLastWriteVersion: request.PreviousLastWriteVersion,

                NewWorkflowSnapshot: *serializedNewWorkflowSnapshot,
        }

        msuss := m.statsComputer.computeMutableStateCreateStats(newRequest)
        _, err = m.persistence.CreateWorkflowExecution(ctx, newRequest)
        if err != nil {
                return nil, err
        }
        return &CreateWorkflowExecutionResponse{MutableStateUpdateSessionStats: msuss}, nil
}

func (m *executionManagerImpl) SerializeWorkflowMutation(
        input *WorkflowMutation,
        encoding common.EncodingType,
) (*InternalWorkflowMutation, error) {

        serializedExecutionInfo, err := m.SerializeExecutionInfo(
                input.ExecutionInfo,
                input.ExecutionStats,
                encoding,
        )
        if err != nil {
                return nil, err
        }
        serializedVersionHistories, err := m.SerializeVersionHistories(input.VersionHistories, encoding)
        if err != nil {
                return nil, err
        }
        serializedUpsertActivityInfos, err := m.SerializeUpsertActivityInfos(input.UpsertActivityInfos, encoding)
        if err != nil {
                return nil, err
        }
        serializedUpsertChildExecutionInfos, err := m.SerializeUpsertChildExecutionInfos(input.UpsertChildExecutionInfos, encoding)
        if err != nil {
                return nil, err
        }
        var serializedNewBufferedEvents *DataBlob
        if input.NewBufferedEvents != nil {
                serializedNewBufferedEvents, err = m.serializer.SerializeBatchEvents(input.NewBufferedEvents, encoding)
                if err != nil {
                        return nil, err
                }
        }

        startVersion, err := getStartVersion(input.VersionHistories)
        if err != nil {
                return nil, err
        }
        lastWriteVersion, err := getLastWriteVersion(input.VersionHistories)
        if err != nil {
                return nil, err
        }

        return &InternalWorkflowMutation{
                ExecutionInfo:    serializedExecutionInfo,
                VersionHistories: serializedVersionHistories,
                StartVersion:     startVersion,
                LastWriteVersion: lastWriteVersion,

                UpsertActivityInfos:       serializedUpsertActivityInfos,
                DeleteActivityInfos:       input.DeleteActivityInfos,
                UpsertTimerInfos:          input.UpsertTimerInfos,
                DeleteTimerInfos:          input.DeleteTimerInfos,
                UpsertChildExecutionInfos: serializedUpsertChildExecutionInfos,
                DeleteChildExecutionInfos: input.DeleteChildExecutionInfos,
                UpsertRequestCancelInfos:  input.UpsertRequestCancelInfos,
                DeleteRequestCancelInfos:  input.DeleteRequestCancelInfos,
                UpsertSignalInfos:         input.UpsertSignalInfos,
                DeleteSignalInfos:         input.DeleteSignalInfos,
                UpsertSignalRequestedIDs:  input.UpsertSignalRequestedIDs,
                DeleteSignalRequestedIDs:  input.DeleteSignalRequestedIDs,
                NewBufferedEvents:         serializedNewBufferedEvents,
                ClearBufferedEvents:       input.ClearBufferedEvents,

                TransferTasks:     input.TransferTasks,
                CrossClusterTasks: input.CrossClusterTasks,
                ReplicationTasks:  input.ReplicationTasks,
                TimerTasks:        input.TimerTasks,

                Condition: input.Condition,
                Checksum:  input.Checksum,
        }, nil
}

func (m *executionManagerImpl) SerializeWorkflowSnapshot(
        input *WorkflowSnapshot,
        encoding common.EncodingType,
) (*InternalWorkflowSnapshot, error) {

        serializedExecutionInfo, err := m.SerializeExecutionInfo(
                input.ExecutionInfo,
                input.ExecutionStats,
                encoding,
        )
        if err != nil {
                return nil, err
        }
        serializedVersionHistories, err := m.SerializeVersionHistories(input.VersionHistories, encoding)
        if err != nil {
                return nil, err
        }
        serializedActivityInfos, err := m.SerializeUpsertActivityInfos(input.ActivityInfos, encoding)
        if err != nil {
                return nil, err
        }
        serializedChildExecutionInfos, err := m.SerializeUpsertChildExecutionInfos(input.ChildExecutionInfos, encoding)
        if err != nil {
                return nil, err
        }

        startVersion, err := getStartVersion(input.VersionHistories)
        if err != nil {
                return nil, err
        }
        lastWriteVersion, err := getLastWriteVersion(input.VersionHistories)
        if err != nil {
                return nil, err
        }

        return &InternalWorkflowSnapshot{
                ExecutionInfo:    serializedExecutionInfo,
                VersionHistories: serializedVersionHistories,
                StartVersion:     startVersion,
                LastWriteVersion: lastWriteVersion,

                ActivityInfos:       serializedActivityInfos,
                TimerInfos:          input.TimerInfos,
                ChildExecutionInfos: serializedChildExecutionInfos,
                RequestCancelInfos:  input.RequestCancelInfos,
                SignalInfos:         input.SignalInfos,
                SignalRequestedIDs:  input.SignalRequestedIDs,

                TransferTasks:     input.TransferTasks,
                CrossClusterTasks: input.CrossClusterTasks,
                ReplicationTasks:  input.ReplicationTasks,
                TimerTasks:        input.TimerTasks,

                Condition: input.Condition,
                Checksum:  input.Checksum,
        }, nil
}

func (m *executionManagerImpl) SerializeVersionHistories(
        versionHistories *VersionHistories,
        encoding common.EncodingType,
) (*DataBlob, error) {

        if versionHistories == nil {
                return nil, nil
        }
        return m.serializer.SerializeVersionHistories(versionHistories.ToInternalType(), encoding)
}

func (m *executionManagerImpl) DeserializeVersionHistories(
        blob *DataBlob,
) (*VersionHistories, error) {

        if blob == nil {
                return nil, nil
        }
        versionHistories, err := m.serializer.DeserializeVersionHistories(blob)
        if err != nil {
                return nil, err
        }
        return NewVersionHistoriesFromInternalType(versionHistories), nil
}

func (m *executionManagerImpl) DeleteWorkflowExecution(
        ctx context.Context,
        request *DeleteWorkflowExecutionRequest,
) error {
        return m.persistence.DeleteWorkflowExecution(ctx, request)
}

func (m *executionManagerImpl) DeleteCurrentWorkflowExecution(
        ctx context.Context,
        request *DeleteCurrentWorkflowExecutionRequest,
) error {
        return m.persistence.DeleteCurrentWorkflowExecution(ctx, request)
}

func (m *executionManagerImpl) GetCurrentExecution(
        ctx context.Context,
        request *GetCurrentExecutionRequest,
) (*GetCurrentExecutionResponse, error) {
        return m.persistence.GetCurrentExecution(ctx, request)
}

func (m *executionManagerImpl) ListCurrentExecutions(
        ctx context.Context,
        request *ListCurrentExecutionsRequest,
) (*ListCurrentExecutionsResponse, error) {
        return m.persistence.ListCurrentExecutions(ctx, request)
}

func (m *executionManagerImpl) IsWorkflowExecutionExists(
        ctx context.Context,
        request *IsWorkflowExecutionExistsRequest,
) (*IsWorkflowExecutionExistsResponse, error) {
        return m.persistence.IsWorkflowExecutionExists(ctx, request)
}

func (m *executionManagerImpl) ListConcreteExecutions(
        ctx context.Context,
        request *ListConcreteExecutionsRequest,
) (*ListConcreteExecutionsResponse, error) {
        response, err := m.persistence.ListConcreteExecutions(ctx, request)
        if err != nil {
                return nil, err
        }
        newResponse := &ListConcreteExecutionsResponse{
                Executions: make([]*ListConcreteExecutionsEntity, len(response.Executions)),
                PageToken:  response.NextPageToken,
        }
        for i, e := range response.Executions {
                info, _, err := m.DeserializeExecutionInfo(e.ExecutionInfo)
                if err != nil {
                        return nil, err
                }
                vh, err := m.DeserializeVersionHistories(e.VersionHistories)
                if err != nil {
                        return nil, err
                }
                newResponse.Executions[i] = &ListConcreteExecutionsEntity{
                        ExecutionInfo:    info,
                        VersionHistories: vh,
                }
        }
        return newResponse, nil
}

// Transfer task related methods
func (m *executionManagerImpl) GetTransferTasks(
        ctx context.Context,
        request *GetTransferTasksRequest,
) (*GetTransferTasksResponse, error) {
        return m.persistence.GetTransferTasks(ctx, request)
}

func (m *executionManagerImpl) CompleteTransferTask(
        ctx context.Context,
        request *CompleteTransferTaskRequest,
) error {
        return m.persistence.CompleteTransferTask(ctx, request)
}

func (m *executionManagerImpl) RangeCompleteTransferTask(
        ctx context.Context,
        request *RangeCompleteTransferTaskRequest,
) (*RangeCompleteTransferTaskResponse, error) {
        return m.persistence.RangeCompleteTransferTask(ctx, request)
}

// Cross-cluster task related methods
func (m *executionManagerImpl) GetCrossClusterTasks(
        ctx context.Context,
        request *GetCrossClusterTasksRequest,
) (*GetCrossClusterTasksResponse, error) {
        return m.persistence.GetCrossClusterTasks(ctx, request)
}

func (m *executionManagerImpl) CompleteCrossClusterTask(
        ctx context.Context,
        request *CompleteCrossClusterTaskRequest,
) error {
        return m.persistence.CompleteCrossClusterTask(ctx, request)
}

func (m *executionManagerImpl) RangeCompleteCrossClusterTask(
        ctx context.Context,
        request *RangeCompleteCrossClusterTaskRequest,
) (*RangeCompleteCrossClusterTaskResponse, error) {
        return m.persistence.RangeCompleteCrossClusterTask(ctx, request)
}

// Replication task related methods
func (m *executionManagerImpl) GetReplicationTasks(
        ctx context.Context,
        request *GetReplicationTasksRequest,
) (*GetReplicationTasksResponse, error) {
        resp, err := m.persistence.GetReplicationTasks(ctx, request)
        if err != nil {
                return nil, err
        }

        return &GetReplicationTasksResponse{
                Tasks:         m.fromInternalReplicationTaskInfos(resp.Tasks),
                NextPageToken: resp.NextPageToken,
        }, nil
}

func (m *executionManagerImpl) CompleteReplicationTask(
        ctx context.Context,
        request *CompleteReplicationTaskRequest,
) error {
        return m.persistence.CompleteReplicationTask(ctx, request)
}

func (m *executionManagerImpl) RangeCompleteReplicationTask(
        ctx context.Context,
        request *RangeCompleteReplicationTaskRequest,
) (*RangeCompleteReplicationTaskResponse, error) {
        return m.persistence.RangeCompleteReplicationTask(ctx, request)
}

func (m *executionManagerImpl) PutReplicationTaskToDLQ(
        ctx context.Context,
        request *PutReplicationTaskToDLQRequest,
) error {
        internalRequest := &InternalPutReplicationTaskToDLQRequest{
                SourceClusterName: request.SourceClusterName,
                TaskInfo:          m.toInternalReplicationTaskInfo(request.TaskInfo),
        }
        return m.persistence.PutReplicationTaskToDLQ(ctx, internalRequest)
}

func (m *executionManagerImpl) GetReplicationTasksFromDLQ(
        ctx context.Context,
        request *GetReplicationTasksFromDLQRequest,
) (*GetReplicationTasksFromDLQResponse, error) {
        resp, err := m.persistence.GetReplicationTasksFromDLQ(ctx, request)
        if err != nil {
                return nil, err
        }
        return &GetReplicationTasksFromDLQResponse{
                Tasks:         m.fromInternalReplicationTaskInfos(resp.Tasks),
                NextPageToken: resp.NextPageToken,
        }, nil
}

func (m *executionManagerImpl) GetReplicationDLQSize(
        ctx context.Context,
        request *GetReplicationDLQSizeRequest,
) (*GetReplicationDLQSizeResponse, error) {
        return m.persistence.GetReplicationDLQSize(ctx, request)
}

func (m *executionManagerImpl) DeleteReplicationTaskFromDLQ(
        ctx context.Context,
        request *DeleteReplicationTaskFromDLQRequest,
) error {
        return m.persistence.DeleteReplicationTaskFromDLQ(ctx, request)
}

func (m *executionManagerImpl) RangeDeleteReplicationTaskFromDLQ(
        ctx context.Context,
        request *RangeDeleteReplicationTaskFromDLQRequest,
) (*RangeDeleteReplicationTaskFromDLQResponse, error) {
        return m.persistence.RangeDeleteReplicationTaskFromDLQ(ctx, request)
}

func (m *executionManagerImpl) CreateFailoverMarkerTasks(
        ctx context.Context,
        request *CreateFailoverMarkersRequest,
) error {
        return m.persistence.CreateFailoverMarkerTasks(ctx, request)
}

// Timer related methods.
func (m *executionManagerImpl) GetTimerIndexTasks(
        ctx context.Context,
        request *GetTimerIndexTasksRequest,
) (*GetTimerIndexTasksResponse, error) {
        return m.persistence.GetTimerIndexTasks(ctx, request)
}

func (m *executionManagerImpl) CompleteTimerTask(
        ctx context.Context,
        request *CompleteTimerTaskRequest,
) error {
        return m.persistence.CompleteTimerTask(ctx, request)
}

func (m *executionManagerImpl) RangeCompleteTimerTask(
        ctx context.Context,
        request *RangeCompleteTimerTaskRequest,
) (*RangeCompleteTimerTaskResponse, error) {
        return m.persistence.RangeCompleteTimerTask(ctx, request)
}

func (m *executionManagerImpl) Close() {
        m.persistence.Close()
}

func (m *executionManagerImpl) fromInternalReplicationTaskInfos(internalInfos []*InternalReplicationTaskInfo) []*ReplicationTaskInfo {
        if internalInfos == nil {
                return nil
        }
        infos := make([]*ReplicationTaskInfo, len(internalInfos))
        for i := 0; i < len(internalInfos); i++ {
                infos[i] = m.fromInternalReplicationTaskInfo(internalInfos[i])
        }
        return infos
}

func (m *executionManagerImpl) fromInternalReplicationTaskInfo(internalInfo *InternalReplicationTaskInfo) *ReplicationTaskInfo {
        if internalInfo == nil {
                return nil
        }
        return &ReplicationTaskInfo{
                DomainID:          internalInfo.DomainID,
                WorkflowID:        internalInfo.WorkflowID,
                RunID:             internalInfo.RunID,
                TaskID:            internalInfo.TaskID,
                TaskType:          internalInfo.TaskType,
                FirstEventID:      internalInfo.FirstEventID,
                NextEventID:       internalInfo.NextEventID,
                Version:           internalInfo.Version,
                ScheduledID:       internalInfo.ScheduledID,
                BranchToken:       internalInfo.BranchToken,
                NewRunBranchToken: internalInfo.NewRunBranchToken,
                CreationTime:      internalInfo.CreationTime.UnixNano(),
        }
}

func (m *executionManagerImpl) toInternalReplicationTaskInfo(info *ReplicationTaskInfo) *InternalReplicationTaskInfo {
        if info == nil {
                return nil
        }
        return &InternalReplicationTaskInfo{
                DomainID:          info.DomainID,
                WorkflowID:        info.WorkflowID,
                RunID:             info.RunID,
                TaskID:            info.TaskID,
                TaskType:          info.TaskType,
                FirstEventID:      info.FirstEventID,
                NextEventID:       info.NextEventID,
                Version:           info.Version,
                ScheduledID:       info.ScheduledID,
                BranchToken:       info.BranchToken,
                NewRunBranchToken: info.NewRunBranchToken,
                CreationTime:      time.Unix(0, info.CreationTime),
        }
}

func getStartVersion(
        versionHistories *VersionHistories,
) (int64, error) {

        if versionHistories == nil {
                return common.EmptyVersion, nil
        }

        versionHistory, err := versionHistories.GetCurrentVersionHistory()
        if err != nil {
                return 0, err
        }
        versionHistoryItem, err := versionHistory.GetFirstItem()
        if err != nil {
                return 0, err
        }
        return versionHistoryItem.Version, nil
}

func getLastWriteVersion(
        versionHistories *VersionHistories,
) (int64, error) {

        if versionHistories == nil {
                return common.EmptyVersion, nil
        }

        versionHistory, err := versionHistories.GetCurrentVersionHistory()
        if err != nil {
                return 0, err
        }
        versionHistoryItem, err := versionHistory.GetLastItem()
        if err != nil {
                return 0, err
        }
        return versionHistoryItem.Version, nil
}

uber / cadence / 0188dfdb-d61a-4522-b858-d93ddfebefc8

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