tasks/common/persistence/sql/execution_util.go

package sql

import (
	"bytes"
	"context"
	"database/sql"
	"fmt"

	commonpb "go.temporal.io/api/common/v1"
	enumspb "go.temporal.io/api/enums/v1"
	"go.temporal.io/api/serviceerror"
	persistencespb "go.temporal.io/server/api/persistence/v1"
	"go.temporal.io/server/common"
	p "go.temporal.io/server/common/persistence"
	"go.temporal.io/server/common/persistence/serialization"
	"go.temporal.io/server/common/persistence/sql/sqlplugin"
	"go.temporal.io/server/common/primitives"
	"go.temporal.io/server/common/primitives/timestamp"
	"go.temporal.io/server/service/history/tasks"
)

func applyWorkflowMutationTx(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	workflowMutation *p.InternalWorkflowMutation,
) error {
	lastWriteVersion := workflowMutation.LastWriteVersion
	namespaceID := workflowMutation.NamespaceID
	workflowID := workflowMutation.WorkflowID
	runID := workflowMutation.ExecutionState.RunId

	namespaceIDBytes, err := primitives.ParseUUID(namespaceID)
	if err != nil {
		return serviceerror.NewInternalf("uuid parse failed. Error: %v", err)
	}

	runIDBytes, err := primitives.ParseUUID(runID)
	if err != nil {
		return serviceerror.NewInternalf("uuid parse failed. Error: %v", err)
	}

	// TODO Remove me if UPDATE holds the lock to the end of a transaction
	if err := lockAndCheckExecution(ctx,
		tx,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
		workflowMutation.Condition,
		workflowMutation.DBRecordVersion,
	); err != nil {
		switch err.(type) {
		case *p.WorkflowConditionFailedError, *p.ConditionFailedError:
			return err
		default:
			return serviceerror.NewUnavailablef("applyWorkflowMutationTx failed. Failed to lock executions row. Error: %v", err)
		}
	}

	if err := updateExecution(ctx,
		tx,
		namespaceID,
		workflowID,
		workflowMutation.ExecutionInfoBlob,
		workflowMutation.ExecutionState,
		workflowMutation.NextEventID,
		lastWriteVersion,
		workflowMutation.DBRecordVersion,
		shardID,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowMutationTx failed. Failed to update executions row. Erorr: %v", err)
	}

	if err := applyTasks(ctx,
		tx,
		shardID,
		workflowMutation.Tasks,
	); err != nil {
		return err
	}

	if err := updateActivityInfos(ctx,
		tx,
		workflowMutation.UpsertActivityInfos,
		workflowMutation.DeleteActivityInfos,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowMutationTx failed. Error: %v", err)
	}

	if err := updateTimerInfos(ctx,
		tx,
		workflowMutation.UpsertTimerInfos,
		workflowMutation.DeleteTimerInfos,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowMutationTx failed. Error: %v", err)
	}

	if err := updateChildExecutionInfos(ctx,
		tx,
		workflowMutation.UpsertChildExecutionInfos,
		workflowMutation.DeleteChildExecutionInfos,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowMutationTx failed. Error: %v", err)
	}

	if err := updateRequestCancelInfos(ctx,
		tx,
		workflowMutation.UpsertRequestCancelInfos,
		workflowMutation.DeleteRequestCancelInfos,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowMutationTx failed. Error: %v", err)
	}

	if err := updateSignalInfos(ctx,
		tx,
		workflowMutation.UpsertSignalInfos,
		workflowMutation.DeleteSignalInfos,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowMutationTx failed. Error: %v", err)
	}

	if err := updateSignalsRequested(ctx,
		tx,
		workflowMutation.UpsertSignalRequestedIDs,
		workflowMutation.DeleteSignalRequestedIDs,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowMutationTx failed. Error: %v", err)
	}

	if workflowMutation.ClearBufferedEvents {
		if err := deleteBufferedEvents(ctx,
			tx,
			shardID,
			namespaceIDBytes,
			workflowID,
			runIDBytes,
		); err != nil {
			return serviceerror.NewUnavailablef("applyWorkflowMutationTx failed. Error: %v", err)
		}
	}

	if err := updateBufferedEvents(ctx,
		tx,
		workflowMutation.NewBufferedEvents,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowMutationTx failed. Error: %v", err)
	}

	if err := updateChasmNodes(ctx,
		tx,
		workflowMutation.UpsertChasmNodes,
		workflowMutation.DeleteChasmNodes,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowMutationTx failed. Error: %v", err)
	}

	return nil
}

func applyWorkflowSnapshotTxAsReset(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	workflowSnapshot *p.InternalWorkflowSnapshot,
) error {

	lastWriteVersion := workflowSnapshot.LastWriteVersion
	workflowID := workflowSnapshot.WorkflowID
	namespaceID := workflowSnapshot.NamespaceID
	runID := workflowSnapshot.ExecutionState.RunId
	namespaceIDBytes, err := primitives.ParseUUID(namespaceID)
	if err != nil {
		return err
	}
	runIDBytes, err := primitives.ParseUUID(runID)
	if err != nil {
		return err
	}

	// TODO Is there a way to modify the various map tables without fear of other people adding rows after we delete, without locking the executions row?
	if err := lockAndCheckExecution(ctx,
		tx,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
		workflowSnapshot.Condition,
		workflowSnapshot.DBRecordVersion,
	); err != nil {
		switch err.(type) {
		case *p.WorkflowConditionFailedError, *p.ConditionFailedError:
			return err
		default:
			return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to lock executions row. Error: %v", err)
		}
	}

	if err := updateExecution(ctx,
		tx,
		namespaceID,
		workflowID,
		workflowSnapshot.ExecutionInfoBlob,
		workflowSnapshot.ExecutionState,
		workflowSnapshot.NextEventID,
		lastWriteVersion,
		workflowSnapshot.DBRecordVersion,
		shardID,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to update executions row. Erorr: %v", err)
	}

	if err := applyTasks(ctx,
		tx,
		shardID,
		workflowSnapshot.Tasks,
	); err != nil {
		return err
	}

	if err := deleteActivityInfoMap(ctx,
		tx,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to clear activity info map. Error: %v", err)
	}

	if err := updateActivityInfos(ctx,
		tx,
		workflowSnapshot.ActivityInfos,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to insert into activity info map after clearing. Error: %v", err)
	}

	if err := deleteTimerInfoMap(ctx,
		tx,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to clear timer info map. Error: %v", err)
	}

	if err := updateTimerInfos(ctx,
		tx,
		workflowSnapshot.TimerInfos,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to insert into timer info map after clearing. Error: %v", err)
	}

	if err := deleteChildExecutionInfoMap(ctx,
		tx,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to clear child execution info map. Error: %v", err)
	}

	if err := updateChildExecutionInfos(ctx,
		tx,
		workflowSnapshot.ChildExecutionInfos,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to insert into activity info map after clearing. Error: %v", err)
	}

	if err := deleteRequestCancelInfoMap(ctx,
		tx,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to clear request cancel info map. Error: %v", err)
	}

	if err := updateRequestCancelInfos(ctx,
		tx,
		workflowSnapshot.RequestCancelInfos,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to insert into request cancel info map after clearing. Error: %v", err)
	}

	if err := deleteSignalInfoMap(ctx,
		tx,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to clear signal info map. Error: %v", err)
	}

	if err := updateSignalInfos(ctx,
		tx,
		workflowSnapshot.SignalInfos,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to insert into signal info map after clearing. Error: %v", err)
	}

	if err := deleteSignalsRequestedSet(ctx,
		tx,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to clear signals requested set. Error: %v", err)
	}

	if err := updateSignalsRequested(ctx,
		tx,
		workflowSnapshot.SignalRequestedIDs,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to insert into signals requested set after clearing. Error: %v", err)
	}

	if err := deleteBufferedEvents(ctx,
		tx,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to clear buffered events. Error: %v", err)
	}

	if err := deleteChasmNodeMap(ctx,
		tx,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to clear CHASM nodes. Error: %v", err)
	}

	if err := updateChasmNodes(ctx,
		tx,
		workflowSnapshot.ChasmNodes,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsReset failed. Failed to update CHASM nodes. Error: %v", err)
	}

	return nil
}

func (m *sqlExecutionStore) applyWorkflowSnapshotTxAsNew(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	workflowSnapshot *p.InternalWorkflowSnapshot,
) error {

	lastWriteVersion := workflowSnapshot.LastWriteVersion
	workflowID := workflowSnapshot.WorkflowID
	namespaceID := workflowSnapshot.NamespaceID
	runID := workflowSnapshot.ExecutionState.RunId
	namespaceIDBytes, err := primitives.ParseUUID(namespaceID)
	if err != nil {
		return err
	}
	runIDBytes, err := primitives.ParseUUID(runID)
	if err != nil {
		return err
	}

	if err := m.createExecution(ctx,
		tx,
		namespaceID,
		workflowID,
		workflowSnapshot.ExecutionInfoBlob,
		workflowSnapshot.ExecutionState,
		workflowSnapshot.NextEventID,
		lastWriteVersion,
		workflowSnapshot.DBRecordVersion,
		shardID,
	); err != nil {
		return err
	}

	if err := applyTasks(ctx,
		tx,
		shardID,
		workflowSnapshot.Tasks,
	); err != nil {
		return err
	}

	if err := updateActivityInfos(ctx,
		tx,
		workflowSnapshot.ActivityInfos,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsNew failed. Failed to insert into activity info map after clearing. Error: %v", err)
	}

	if err := updateTimerInfos(ctx,
		tx,
		workflowSnapshot.TimerInfos,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsNew failed. Failed to insert into timer info map after clearing. Error: %v", err)
	}

	if err := updateChildExecutionInfos(ctx,
		tx,
		workflowSnapshot.ChildExecutionInfos,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsNew failed. Failed to insert into activity info map after clearing. Error: %v", err)
	}

	if err := updateRequestCancelInfos(ctx,
		tx,
		workflowSnapshot.RequestCancelInfos,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsNew failed. Failed to insert into request cancel info map after clearing. Error: %v", err)
	}

	if err := updateSignalInfos(ctx,
		tx,
		workflowSnapshot.SignalInfos,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsNew failed. Failed to insert into signal info map after clearing. Error: %v", err)
	}

	if err := updateSignalsRequested(ctx,
		tx,
		workflowSnapshot.SignalRequestedIDs,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsNew failed. Failed to insert into signals requested set after clearing. Error: %v", err)
	}

	if err := updateChasmNodes(ctx,
		tx,
		workflowSnapshot.ChasmNodes,
		nil,
		shardID,
		namespaceIDBytes,
		workflowID,
		runIDBytes,
	); err != nil {
		return serviceerror.NewUnavailablef("applyWorkflowSnapshotTxAsNew failed. Failed to update CHASM nodes. Error: %v", err)
	}

	return nil
}

func applyTasks(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	insertTasks map[tasks.Category][]p.InternalHistoryTask,
) error {

	var err error
	for category, tasksByCategory := range insertTasks {
		switch category.Type() {
		case tasks.CategoryTypeImmediate:
			err = createImmediateTasks(ctx, tx, shardID, category.ID(), tasksByCategory)
		case tasks.CategoryTypeScheduled:
			err = createScheduledTasks(ctx, tx, shardID, category.ID(), tasksByCategory)
		default:
			err = serviceerror.NewInternalf("Unknown task category type: %v", category)
		}

		if err != nil {
			return err
		}
	}

	return nil
}

// lockCurrentExecutionIfExists returns current execution or nil if none is found for the workflowID
// locking it in the DB
func lockCurrentExecutionIfExists(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	namespaceID primitives.UUID,
	workflowID string,
) (*sqlplugin.CurrentExecutionsRow, error) {
	rows, err := tx.LockCurrentExecutionsJoinExecutions(ctx, sqlplugin.CurrentExecutionsFilter{
		ShardID: shardID, NamespaceID: namespaceID, WorkflowID: workflowID,
	})
	if err != nil {
		if err != sql.ErrNoRows {
			return nil, serviceerror.NewUnavailablef("lockCurrentExecutionIfExists failed. Failed to get current_executions row for (shard,namespace,workflow) = (%v, %v, %v). Error: %v", shardID, namespaceID, workflowID, err)
		}
	}
	size := len(rows)
	if size > 1 {
		return nil, serviceerror.NewUnavailablef("lockCurrentExecutionIfExists failed. Multiple current_executions rows for (shard,namespace,workflow) = (%v, %v, %v).", shardID, namespaceID, workflowID)
	}
	if size == 0 {
		return nil, nil
	}
	return &rows[0], nil
}

func createOrUpdateCurrentExecution(
	ctx context.Context,
	tx sqlplugin.Tx,
	row sqlplugin.CurrentExecutionsRow,
	createMode p.CreateWorkflowMode,
) error {

	switch createMode {
	case p.CreateWorkflowModeUpdateCurrent:
		if err := updateCurrentExecution(ctx, tx, row); err != nil {
			return serviceerror.NewUnavailablef("createOrUpdateCurrentExecution failed. Failed to reuse workflow ID. Error: %v", err)
		}
	case p.CreateWorkflowModeBrandNew:
		if _, err := tx.InsertIntoCurrentExecutions(ctx, &row); err != nil {
			return serviceerror.NewUnavailablef("createOrUpdateCurrentExecution failed. Failed to insert into current_executions table. Error: %v", err)
		}
	case p.CreateWorkflowModeBypassCurrent:
		// noop
	default:
		return fmt.Errorf("createOrUpdateCurrentExecution failed. Unknown workflow creation mode: %v", createMode)
	}

	return nil
}

func lockAndCheckExecution(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	namespaceID primitives.UUID,
	workflowID string,
	runID primitives.UUID,
	condition int64,
	dbRecordVersion int64,
) error {

	version, nextEventID, err := lockExecution(ctx, tx, shardID, namespaceID, workflowID, runID)
	if err != nil {
		return err
	}

	if dbRecordVersion == 0 {
		if nextEventID != condition {
			return &p.WorkflowConditionFailedError{
				Msg:             fmt.Sprintf("lockAndCheckExecution failed. Next_event_id was %v when it should have been %v.", nextEventID, condition),
				NextEventID:     nextEventID,
				DBRecordVersion: version,
			}
		}
	} else {
		dbRecordVersion -= 1
		if version != dbRecordVersion {
			return &p.WorkflowConditionFailedError{
				Msg:             fmt.Sprintf("lockAndCheckExecution failed. DBRecordVersion expected: %v, actually %v.", dbRecordVersion, version),
				NextEventID:     nextEventID,
				DBRecordVersion: version,
			}
		}
	}

	return nil
}

func lockExecution(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	namespaceID primitives.UUID,
	workflowID string,
	runID primitives.UUID,
) (int64, int64, error) {

	dbRecordVersion, nextEventID, err := tx.WriteLockExecutions(ctx, sqlplugin.ExecutionsFilter{
		ShardID:     shardID,
		NamespaceID: namespaceID,
		WorkflowID:  workflowID,
		RunID:       runID,
	})
	if err != nil {
		if err == sql.ErrNoRows {
			return 0, 0, &p.ConditionFailedError{
				Msg: fmt.Sprintf("WriteLockExecutions failed. Unable to lock (shard, namespace, workflow, run) = (%v,%v,%v,%v) which does not exist.",
					shardID,
					namespaceID,
					workflowID,
					runID),
			}
		}
		return 0, 0, serviceerror.NewUnavailablef("lockNextEventID failed. Error: %v", err)
	}
	return dbRecordVersion, nextEventID, nil
}

func createImmediateTasks(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	categoryID int,
	immedidateTasks []p.InternalHistoryTask,
) error {
	// This is for backward compatiblity.
	// These task categories exist before the general history_immediate_tasks table is created,
	// so they have their own tables.
	switch categoryID {
	case tasks.CategoryIDTransfer:
		return createTransferTasks(ctx, tx, shardID, immedidateTasks)
	case tasks.CategoryIDVisibility:
		return createVisibilityTasks(ctx, tx, shardID, immedidateTasks)
	case tasks.CategoryIDReplication:
		return createReplicationTasks(ctx, tx, shardID, immedidateTasks)
	}

	if len(immedidateTasks) == 0 {
		return nil
	}

	immediateTasksRows := make([]sqlplugin.HistoryImmediateTasksRow, 0, len(immedidateTasks))
	for _, task := range immedidateTasks {
		immediateTasksRows = append(immediateTasksRows, sqlplugin.HistoryImmediateTasksRow{
			ShardID:      shardID,
			CategoryID:   int32(categoryID),
			TaskID:       task.Key.TaskID,
			Data:         task.Blob.Data,
			DataEncoding: task.Blob.EncodingType.String(),
		})
	}

	result, err := tx.InsertIntoHistoryImmediateTasks(ctx, immediateTasksRows)
	if err != nil {
		return serviceerror.NewUnavailablef("createImmediateTasks failed. Error: %v", err)
	}

	rowsAffected, err := result.RowsAffected()
	if err != nil {
		return serviceerror.NewUnavailablef("createImmediateTasks failed. Could not verify number of rows inserted. Error: %v", err)
	}

	if int(rowsAffected) != len(immediateTasksRows) {
		return serviceerror.NewUnavailablef("createImmediateTasks failed. Inserted %v instead of %v rows into history_immediate_tasks. Error: %v", rowsAffected, len(immediateTasksRows), err)
	}
	return nil
}

func createScheduledTasks(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	categoryID int,
	scheduledTasks []p.InternalHistoryTask,
) error {
	// This is for backward compatiblity.
	// These task categories exists before the general history_scheduled_tasks table is created,
	// so they have their own tables.
	if categoryID == tasks.CategoryIDTimer {
		return createTimerTasks(ctx, tx, shardID, scheduledTasks)
	}

	if len(scheduledTasks) == 0 {
		return nil
	}

	scheduledTasksRows := make([]sqlplugin.HistoryScheduledTasksRow, 0, len(scheduledTasks))
	for _, task := range scheduledTasks {
		scheduledTasksRows = append(scheduledTasksRows, sqlplugin.HistoryScheduledTasksRow{
			ShardID:             shardID,
			CategoryID:          int32(categoryID),
			VisibilityTimestamp: task.Key.FireTime,
			TaskID:              task.Key.TaskID,
			Data:                task.Blob.Data,
			DataEncoding:        task.Blob.EncodingType.String(),
		})
	}

	result, err := tx.InsertIntoHistoryScheduledTasks(ctx, scheduledTasksRows)
	if err != nil {
		return serviceerror.NewUnavailablef("createScheduledTasks failed. Error: %v", err)
	}
	rowsAffected, err := result.RowsAffected()
	if err != nil {
		return serviceerror.NewUnavailablef("createScheduledTasks failed. Could not verify number of rows inserted. Error: %v", err)
	}

	if int(rowsAffected) != len(scheduledTasks) {
		return serviceerror.NewUnavailablef("createScheduledTasks failed. Inserted %v instead of %v rows into history_scheduled_tasks. Error: %v", rowsAffected, len(scheduledTasks), err)
	}
	return nil
}

func createTransferTasks(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	transferTasks []p.InternalHistoryTask,
) error {

	if len(transferTasks) == 0 {
		return nil
	}

	transferTasksRows := make([]sqlplugin.TransferTasksRow, 0, len(transferTasks))
	for _, task := range transferTasks {
		transferTasksRows = append(transferTasksRows, sqlplugin.TransferTasksRow{
			ShardID:      shardID,
			TaskID:       task.Key.TaskID,
			Data:         task.Blob.Data,
			DataEncoding: task.Blob.EncodingType.String(),
		})
	}

	result, err := tx.InsertIntoTransferTasks(ctx, transferTasksRows)
	if err != nil {
		return serviceerror.NewUnavailablef("createTransferTasks failed. Error: %v", err)
	}

	rowsAffected, err := result.RowsAffected()
	if err != nil {
		return serviceerror.NewUnavailablef("createTransferTasks failed. Could not verify number of rows inserted. Error: %v", err)
	}

	if int(rowsAffected) != len(transferTasks) {
		return serviceerror.NewUnavailablef("createTransferTasks failed. Inserted %v instead of %v rows into transfer_tasks. Error: %v", rowsAffected, len(transferTasks), err)
	}
	return nil
}

func createTimerTasks(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	timerTasks []p.InternalHistoryTask,
) error {

	if len(timerTasks) == 0 {
		return nil
	}

	timerTasksRows := make([]sqlplugin.TimerTasksRow, 0, len(timerTasks))
	for _, task := range timerTasks {
		timerTasksRows = append(timerTasksRows, sqlplugin.TimerTasksRow{
			ShardID:             shardID,
			VisibilityTimestamp: task.Key.FireTime,
			TaskID:              task.Key.TaskID,
			Data:                task.Blob.Data,
			DataEncoding:        task.Blob.EncodingType.String(),
		})
	}

	result, err := tx.InsertIntoTimerTasks(ctx, timerTasksRows)
	if err != nil {
		return serviceerror.NewUnavailablef("createTimerTasks failed. Error: %v", err)
	}
	rowsAffected, err := result.RowsAffected()
	if err != nil {
		return serviceerror.NewUnavailablef("createTimerTasks failed. Could not verify number of rows inserted. Error: %v", err)
	}

	if int(rowsAffected) != len(timerTasks) {
		return serviceerror.NewUnavailablef("createTimerTasks failed. Inserted %v instead of %v rows into timer_tasks. Error: %v", rowsAffected, len(timerTasks), err)
	}
	return nil
}

func createReplicationTasks(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	replicationTasks []p.InternalHistoryTask,
) error {

	if len(replicationTasks) == 0 {
		return nil
	}

	replicationTasksRows := make([]sqlplugin.ReplicationTasksRow, 0, len(replicationTasks))
	for _, task := range replicationTasks {
		replicationTasksRows = append(replicationTasksRows, sqlplugin.ReplicationTasksRow{
			ShardID:      shardID,
			TaskID:       task.Key.TaskID,
			Data:         task.Blob.Data,
			DataEncoding: task.Blob.EncodingType.String(),
		})
	}

	result, err := tx.InsertIntoReplicationTasks(ctx, replicationTasksRows)
	if err != nil {
		return serviceerror.NewUnavailablef("createReplicationTasks failed. Error: %v", err)
	}

	rowsAffected, err := result.RowsAffected()
	if err != nil {
		return serviceerror.NewUnavailablef("createReplicationTasks failed. Could not verify number of rows inserted. Error: %v", err)
	}

	if int(rowsAffected) != len(replicationTasks) {
		return serviceerror.NewUnavailablef("createReplicationTasks failed. Inserted %v instead of %v rows into transfer_tasks. Error: %v", rowsAffected, len(replicationTasks), err)
	}
	return nil
}

func createVisibilityTasks(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	visibilityTasks []p.InternalHistoryTask,
) error {

	if len(visibilityTasks) == 0 {
		return nil
	}

	visibilityTasksRows := make([]sqlplugin.VisibilityTasksRow, 0, len(visibilityTasks))
	for _, task := range visibilityTasks {
		visibilityTasksRows = append(visibilityTasksRows, sqlplugin.VisibilityTasksRow{
			ShardID:      shardID,
			TaskID:       task.Key.TaskID,
			Data:         task.Blob.Data,
			DataEncoding: task.Blob.EncodingType.String(),
		})
	}

	result, err := tx.InsertIntoVisibilityTasks(ctx, visibilityTasksRows)
	if err != nil {
		return serviceerror.NewUnavailablef("createTransferTasks failed. Error: %v", err)
	}

	rowsAffected, err := result.RowsAffected()
	if err != nil {
		return serviceerror.NewUnavailablef("createTransferTasks failed. Could not verify number of rows inserted. Error: %v", err)
	}

	if int(rowsAffected) != len(visibilityTasksRows) {
		return serviceerror.NewUnavailablef("createTransferTasks failed. Inserted %v instead of %v rows into transfer_tasks. Error: %v", rowsAffected, len(visibilityTasksRows), err)
	}
	return nil
}

func assertNotCurrentExecution(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	namespaceID primitives.UUID,
	workflowID string,
	runID primitives.UUID,
) error {
	currentRow, err := tx.LockCurrentExecutions(ctx, sqlplugin.CurrentExecutionsFilter{
		ShardID:     shardID,
		NamespaceID: namespaceID,
		WorkflowID:  workflowID,
	})
	if err != nil {
		if err == sql.ErrNoRows {
			// allow bypassing no current record
			return nil
		}
		return serviceerror.NewUnavailablef("assertCurrentExecution failed. Unable to load current record. Error: %v", err)
	}
	return assertRunIDMismatch(runID, currentRow)
}

func assertRunIDAndUpdateCurrentExecution(
	ctx context.Context,
	tx sqlplugin.Tx,
	row sqlplugin.CurrentExecutionsRow,
	previousRunID primitives.UUID,
) error {

	assertFn := func(currentRow *sqlplugin.CurrentExecutionsRow) error {
		if !bytes.Equal(currentRow.RunID, previousRunID) {
			executionState, err := workflowExecutionStateFromCurrentExecutionsRow(currentRow)
			if err != nil {
				return err
			}

			return &p.CurrentWorkflowConditionFailedError{
				Msg: fmt.Sprintf(
					"assertRunIDAndUpdateCurrentExecution failed. current run ID: %v, request run ID: %v",
					currentRow.RunID,
					previousRunID,
				),
				RequestIDs:       executionState.RequestIds,
				RunID:            currentRow.RunID.String(),
				State:            currentRow.State,
				Status:           currentRow.Status,
				LastWriteVersion: currentRow.LastWriteVersion,
				StartTime:        currentRow.StartTime,
			}
		}
		return nil
	}
	if err := assertCurrentExecution(ctx,
		tx,
		row.ShardID,
		row.NamespaceID,
		row.WorkflowID,
		assertFn,
	); err != nil {
		return err
	}

	return updateCurrentExecution(ctx, tx, row)
}

func assertCurrentExecution(
	ctx context.Context,
	tx sqlplugin.Tx,
	shardID int32,
	namespaceID primitives.UUID,
	workflowID string,
	assertFn func(currentRow *sqlplugin.CurrentExecutionsRow) error,
) error {

	currentRow, err := tx.LockCurrentExecutions(ctx, sqlplugin.CurrentExecutionsFilter{
		ShardID:     shardID,
		NamespaceID: namespaceID,
		WorkflowID:  workflowID,
	})
	if err != nil {
		return serviceerror.NewUnavailablef("assertCurrentExecution failed. Unable to load current record. Error: %v", err)
	}
	return assertFn(currentRow)
}

func assertRunIDMismatch(requestRunID primitives.UUID, currentRow *sqlplugin.CurrentExecutionsRow) error {
	// zombie workflow creation with existence of current record, this is a noop
	if currentRow == nil {
		return nil
	}
	if bytes.Equal(currentRow.RunID, requestRunID) {
		return extractCurrentWorkflowConflictError(
			currentRow,
			fmt.Sprintf(
				"assertRunIDMismatch failed. request run ID: %v, current run ID: %v",
				requestRunID,
				currentRow.RunID.String(),
			),
		)
	}
	return nil
}

func updateCurrentExecution(
	ctx context.Context,
	tx sqlplugin.Tx,
	row sqlplugin.CurrentExecutionsRow,
) error {

	result, err := tx.UpdateCurrentExecutions(ctx, &row)
	if err != nil {
		return serviceerror.NewUnavailablef("updateCurrentExecution failed. Error: %v", err)
	}
	rowsAffected, err := result.RowsAffected()
	if err != nil {
		return serviceerror.NewUnavailablef("updateCurrentExecution failed. Failed to check number of rows updated in current_executions table. Error: %v", err)
	}
	if rowsAffected != 1 {
		return serviceerror.NewUnavailablef("updateCurrentExecution failed. %v rows of current_executions updated instead of 1.", rowsAffected)
	}
	return nil
}

func buildExecutionRow(
	namespaceID string,
	workflowID string,
	executionInfo *commonpb.DataBlob,
	executionState *persistencespb.WorkflowExecutionState,
	nextEventID int64,
	lastWriteVersion int64,
	dbRecordVersion int64,
	shardID int32,
) (row *sqlplugin.ExecutionsRow, err error) {
	// TODO: double encoding execution state? executionState could've been passed to the function as
	// *commonpb.DataBlob like executionInfo
	stateBlob, err := serialization.WorkflowExecutionStateToBlob(executionState)
	if err != nil {
		return nil, err
	}

	nsBytes, err := primitives.ParseUUID(namespaceID)
	if err != nil {
		return nil, err
	}

	ridBytes, err := primitives.ParseUUID(executionState.RunId)
	if err != nil {
		return nil, err
	}

	return &sqlplugin.ExecutionsRow{
		ShardID:          shardID,
		NamespaceID:      nsBytes,
		WorkflowID:       workflowID,
		RunID:            ridBytes,
		NextEventID:      nextEventID,
		LastWriteVersion: lastWriteVersion,
		Data:             executionInfo.Data,
		DataEncoding:     executionInfo.EncodingType.String(),
		State:            stateBlob.Data,
		StateEncoding:    stateBlob.EncodingType.String(),
		DBRecordVersion:  dbRecordVersion,
	}, nil
}

func (m *sqlExecutionStore) createExecution(
	ctx context.Context,
	tx sqlplugin.Tx,
	namespaceID string,
	workflowID string,
	executionInfo *commonpb.DataBlob,
	executionState *persistencespb.WorkflowExecutionState,
	nextEventID int64,
	lastWriteVersion int64,
	dbRecordVersion int64,
	shardID int32,
) error {

	row, err := buildExecutionRow(
		namespaceID,
		workflowID,
		executionInfo,
		executionState,
		nextEventID,
		lastWriteVersion,
		dbRecordVersion,
		shardID,
	)
	if err != nil {
		return err
	}
	result, err := tx.InsertIntoExecutions(ctx, row)
	if err != nil {
		if m.DB.IsDupEntryError(err) {
			return &p.WorkflowConditionFailedError{
				Msg:             fmt.Sprintf("Workflow execution already running. WorkflowId: %v", workflowID),
				NextEventID:     0,
				DBRecordVersion: 0,
			}
		}
		return serviceerror.NewUnavailablef("createExecution failed. Erorr: %v", err)
	}
	rowsAffected, err := result.RowsAffected()
	if err != nil {
		return serviceerror.NewUnavailablef("createExecution failed. Failed to verify number of rows affected. Erorr: %v", err)
	}
	if rowsAffected != 1 {
		return serviceerror.NewNotFoundf("createExecution failed. Affected %v rows updated instead of 1.", rowsAffected)
	}

	return nil
}

func updateExecution(
	ctx context.Context,
	tx sqlplugin.Tx,
	namespaceID string,
	workflowID string,
	executionInfo *commonpb.DataBlob,
	executionState *persistencespb.WorkflowExecutionState,
	nextEventID int64,
	lastWriteVersion int64,
	dbRecordVersion int64,
	shardID int32,
) error {
	row, err := buildExecutionRow(
		namespaceID,
		workflowID,
		executionInfo,
		executionState,
		nextEventID,
		lastWriteVersion,
		dbRecordVersion,
		shardID,
	)
	if err != nil {
		return err
	}
	result, err := tx.UpdateExecutions(ctx, row)
	if err != nil {
		return serviceerror.NewUnavailablef("updateExecution failed. Erorr: %v", err)
	}
	rowsAffected, err := result.RowsAffected()
	if err != nil {
		return serviceerror.NewUnavailablef("updateExecution failed. Failed to verify number of rows affected. Erorr: %v", err)
	}
	if rowsAffected != 1 {
		return serviceerror.NewNotFoundf("updateExecution failed. Affected %v rows updated instead of 1.", rowsAffected)
	}

	return nil
}

func workflowExecutionStateFromCurrentExecutionsRow(
	row *sqlplugin.CurrentExecutionsRow,
) (*persistencespb.WorkflowExecutionState, error) {
	if len(row.Data) > 0 && row.DataEncoding != "" {
		return serialization.WorkflowExecutionStateFromBlob(p.NewDataBlob(row.Data, row.DataEncoding))
	}

	// Old records don't have the serialized WorkflowExecutionState stored in DB.
	executionState := &persistencespb.WorkflowExecutionState{
		CreateRequestId: row.CreateRequestID,
		RunId:           row.RunID.String(),
		State:           row.State,
		Status:          row.Status,
		RequestIds: map[string]*persistencespb.RequestIDInfo{
			row.CreateRequestID: {
				EventType: enumspb.EVENT_TYPE_WORKFLOW_EXECUTION_STARTED,
				EventId:   common.FirstEventID,
			},
		},
	}
	if row.StartTime != nil {
		executionState.StartTime = timestamp.TimePtr(*row.StartTime)
	}
	return executionState, nil
}