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Use a transaction for writing, knowngaps, and reorgs #53

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abdulrabbani00 merged 4 commits from feature/52-database-write-improvements into develop 2022-06-06 13:02:43 +00:00
Conversation 0 Commits 4 Files Changed 18 +130 -53
3 changed files with 130 additions and 53 deletions
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Showing only changes of commit 11dce3db34 - Show all commits

146
pkg/beaconclient/databasewrite.go
View File

@ -20,10 +20,10 @@ import (
"fmt"
"strconv"
"github.com/jackc/pgx/v4"
log "github.com/sirupsen/logrus"
"github.com/vulcanize/ipld-ethcl-indexer/pkg/database/sql"
"github.com/vulcanize/ipld-ethcl-indexer/pkg/loghelper"
"golang.org/x/sync/errgroup"
)
var (
@ -75,6 +75,8 @@ VALUES ($1, $2, $3, $4, $5, $6) on CONFLICT (start_slot, end_slot) DO NOTHING`
// Remove any of it from the processslot file.
type DatabaseWriter struct {
Db sql.Database
Tx sql.Tx
Ctx context.Context
Metrics *BeaconClientMetrics
DbSlots *DbSlots
DbSignedBeaconBlock *DbSignedBeaconBlock
@ -85,14 +87,21 @@ type DatabaseWriter struct {
func CreateDatabaseWrite(db sql.Database, slot int, stateRoot string, blockRoot string, parentBlockRoot string,
eth1BlockHash string, status string, rawSignedBeaconBlock []byte, rawBeaconState []byte, metrics *BeaconClientMetrics) (*DatabaseWriter, error) {
ctx := context.Background()
tx, err := db.Begin(ctx)
if err != nil {
loghelper.LogError(err).Error("We are unable to Begin a SQL transaction")
}
dw := &DatabaseWriter{
Db: db,
Tx: tx,
Ctx: ctx,
rawBeaconState: rawBeaconState,
rawSignedBeaconBlock: rawSignedBeaconBlock,
Metrics: metrics,
}
dw.prepareSlotsModel(slot, stateRoot, blockRoot, status)
err := dw.prepareSignedBeaconBlockModel(slot, blockRoot, parentBlockRoot, eth1BlockHash)
err = dw.prepareSignedBeaconBlockModel(slot, blockRoot, parentBlockRoot, eth1BlockHash)
if err != nil {
return nil, err
}
@ -150,28 +159,40 @@ func (dw *DatabaseWriter) prepareBeaconStateModel(slot int, stateRoot string) er
return nil
}
// Write all the data for a given slot.
func (dw *DatabaseWriter) writeFullSlot() error {
// Add all the data for a given slot to a SQL transaction.
// Originally it wrote to each table individually.
func (dw *DatabaseWriter) transactFullSlot() error {
// If an error occurs, write to knownGaps table.
log.WithFields(log.Fields{
"slot": dw.DbSlots.Slot,
}).Debug("Starting to write to the DB.")
err := dw.writeSlots()
err := dw.transactSlots()
if err != nil {
loghelper.LogSlotError(dw.DbSlots.Slot, err).Error("We couldn't write to the ethcl.slots table...")
return err
}
log.Debug("We finished writing to the ethcl.slots table.")
if dw.DbSlots.Status != "skipped" {
errG, _ := errgroup.WithContext(context.Background())
errG.Go(func() error {
return dw.writeSignedBeaconBlocks()
})
errG.Go(func() error {
return dw.writeBeaconState()
})
if err := errG.Wait(); err != nil {
loghelper.LogSlotError(dw.DbSlots.Slot, err).Error("We couldn't write to the ethcl block or state table...")
//errG, _ := errgroup.WithContext(context.Background())
//errG.Go(func() error {
// return dw.transactSignedBeaconBlocks()
//})
//errG.Go(func() error {
// return dw.transactBeaconState()
//})
//if err := errG.Wait(); err != nil {
// loghelper.LogSlotError(dw.DbSlots.Slot, err).Error("We couldn't write to the ethcl block or state table...")
// return err
//}
// Might want to seperate writing to public.blocks so we can do this concurrently...
err := dw.transactSignedBeaconBlocks()
if err != nil {
loghelper.LogSlotError(dw.DbSlots.Slot, err).Error("We couldn't write to the ethcl block table...")
return err
}
err = dw.transactBeaconState()
if err != nil {
loghelper.LogSlotError(dw.DbSlots.Slot, err).Error("We couldn't write to the ethcl state table...")
return err
}
}
@ -179,16 +200,16 @@ func (dw *DatabaseWriter) writeFullSlot() error {
return nil
}
// Write the information for the generic slots table. For now this is only one function.
// Add data for the ethcl.slots table to a transaction. For now this is only one function.
// But in the future if we need to incorporate any FK's or perform any actions to write to the
// slots table we can do it all here.
func (dw *DatabaseWriter) writeSlots() error {
func (dw *DatabaseWriter) transactSlots() error {
return dw.upsertSlots()
}
// Upsert to the ethcl.slots table.
func (dw *DatabaseWriter) upsertSlots() error {
_, err := dw.Db.Exec(context.Background(), UpsertSlotsStmt, dw.DbSlots.Epoch, dw.DbSlots.Slot, dw.DbSlots.BlockRoot, dw.DbSlots.StateRoot, dw.DbSlots.Status)
_, err := dw.Tx.Exec(dw.Ctx, UpsertSlotsStmt, dw.DbSlots.Epoch, dw.DbSlots.Slot, dw.DbSlots.BlockRoot, dw.DbSlots.StateRoot, dw.DbSlots.Status)
if err != nil {
loghelper.LogSlotError(dw.DbSlots.Slot, err).Error("Unable to write to the slot to the ethcl.slots table")
return err
@ -196,8 +217,8 @@ func (dw *DatabaseWriter) upsertSlots() error {
return nil
}
// Write the information for the signed_beacon_block.
func (dw *DatabaseWriter) writeSignedBeaconBlocks() error {
// Add the information for the signed_beacon_block to a transaction.
func (dw *DatabaseWriter) transactSignedBeaconBlocks() error {
err := dw.upsertPublicBlocks(dw.DbSignedBeaconBlock.MhKey, dw.rawSignedBeaconBlock)
if err != nil {
return err
@ -211,7 +232,7 @@ func (dw *DatabaseWriter) writeSignedBeaconBlocks() error {
// Upsert to public.blocks.
func (dw *DatabaseWriter) upsertPublicBlocks(key string, data []byte) error {
_, err := dw.Db.Exec(context.Background(), UpsertBlocksStmt, key, data)
_, err := dw.Tx.Exec(dw.Ctx, UpsertBlocksStmt, key, data)
if err != nil {
loghelper.LogSlotError(dw.DbSlots.Slot, err).Error("Unable to write to the slot to the public.blocks table")
return err
@ -221,7 +242,7 @@ func (dw *DatabaseWriter) upsertPublicBlocks(key string, data []byte) error {
// Upsert to the ethcl.signed_beacon_block table.
func (dw *DatabaseWriter) upsertSignedBeaconBlock() error {
_, err := dw.Db.Exec(context.Background(), UpsertSignedBeaconBlockStmt, dw.DbSignedBeaconBlock.Slot, dw.DbSignedBeaconBlock.BlockRoot, dw.DbSignedBeaconBlock.ParentBlock, dw.DbSignedBeaconBlock.Eth1BlockHash, dw.DbSignedBeaconBlock.MhKey)
_, err := dw.Tx.Exec(dw.Ctx, UpsertSignedBeaconBlockStmt, dw.DbSignedBeaconBlock.Slot, dw.DbSignedBeaconBlock.BlockRoot, dw.DbSignedBeaconBlock.ParentBlock, dw.DbSignedBeaconBlock.Eth1BlockHash, dw.DbSignedBeaconBlock.MhKey)
if err != nil {
loghelper.LogSlotError(dw.DbSlots.Slot, err).WithFields(log.Fields{"block_root": dw.DbSignedBeaconBlock.BlockRoot}).Error("Unable to write to the slot to the ethcl.signed_beacon_block table")
return err
@ -229,8 +250,8 @@ func (dw *DatabaseWriter) upsertSignedBeaconBlock() error {
return nil
}
// Write the information for the beacon_state.
func (dw *DatabaseWriter) writeBeaconState() error {
// Add the information for the beacon_state to a transaction.
func (dw *DatabaseWriter) transactBeaconState() error {
err := dw.upsertPublicBlocks(dw.DbBeaconState.MhKey, dw.rawBeaconState)
if err != nil {
return err
@ -244,7 +265,7 @@ func (dw *DatabaseWriter) writeBeaconState() error {
// Upsert to the ethcl.beacon_state table.
func (dw *DatabaseWriter) upsertBeaconState() error {
_, err := dw.Db.Exec(context.Background(), UpsertBeaconState, dw.DbBeaconState.Slot, dw.DbBeaconState.StateRoot, dw.DbBeaconState.MhKey)
_, err := dw.Tx.Exec(dw.Ctx, UpsertBeaconState, dw.DbBeaconState.Slot, dw.DbBeaconState.StateRoot, dw.DbBeaconState.MhKey)
if err != nil {
loghelper.LogSlotError(dw.DbSlots.Slot, err).Error("Unable to write to the slot to the ethcl.beacon_state table")
return err
@ -252,23 +273,23 @@ func (dw *DatabaseWriter) upsertBeaconState() error {
return nil
}
// Update a given slot to be marked as forked. Provide the slot and the latest latestBlockRoot.
// Update a given slot to be marked as forked within a transaction. Provide the slot and the latest latestBlockRoot.
// We will mark all entries for the given slot that don't match the provided latestBlockRoot as forked.
func writeReorgs(db sql.Database, slot string, latestBlockRoot string, metrics *BeaconClientMetrics) {
func transactReorgs(db sql.Database, tx sql.Tx, ctx context.Context, slot string, latestBlockRoot string, metrics *BeaconClientMetrics) {
slotNum, strErr := strconv.Atoi(slot)
if strErr != nil {
loghelper.LogReorgError(slot, latestBlockRoot, strErr).Error("We can't convert the slot to an int...")
}
forkCount, err := updateForked(db, slot, latestBlockRoot)
forkCount, err := updateForked(tx, ctx, slot, latestBlockRoot)
if err != nil {
loghelper.LogReorgError(slot, latestBlockRoot, err).Error("We ran into some trouble while updating all forks.")
writeKnownGaps(db, 1, slotNum, slotNum, err, "reorg", metrics)
transactKnownGaps(tx, ctx, 1, slotNum, slotNum, err, "reorg", metrics)
}
proposedCount, err := updateProposed(db, slot, latestBlockRoot)
proposedCount, err := updateProposed(tx, ctx, slot, latestBlockRoot)
if err != nil {
loghelper.LogReorgError(slot, latestBlockRoot, err).Error("We ran into some trouble while trying to update the proposed slot.")
writeKnownGaps(db, 1, slotNum, slotNum, err, "reorg", metrics)
transactKnownGaps(tx, ctx, 1, slotNum, slotNum, err, "reorg", metrics)
}
if forkCount > 0 {
@ -289,18 +310,18 @@ func writeReorgs(db sql.Database, slot string, latestBlockRoot string, metrics *
loghelper.LogReorg(slot, latestBlockRoot).WithFields(log.Fields{
"proposedCount": proposedCount,
}).Error("Too many rows were marked as proposed!")
writeKnownGaps(db, 1, slotNum, slotNum, err, "reorg", metrics)
transactKnownGaps(tx, ctx, 1, slotNum, slotNum, err, "reorg", metrics)
} else if proposedCount == 0 {
var count int
err := db.QueryRow(context.Background(), CheckProposedStmt, slot, latestBlockRoot).Scan(count)
if err != nil {
loghelper.LogReorgError(slot, latestBlockRoot, err).Error("Unable to query proposed rows after reorg.")
writeKnownGaps(db, 1, slotNum, slotNum, err, "reorg", metrics)
transactKnownGaps(tx, ctx, 1, slotNum, slotNum, err, "reorg", metrics)
} else if count != 1 {
loghelper.LogReorg(slot, latestBlockRoot).WithFields(log.Fields{
"proposedCount": count,
}).Warn("The proposed block was not marked as proposed...")
writeKnownGaps(db, 1, slotNum, slotNum, err, "reorg", metrics)
transactKnownGaps(tx, ctx, 1, slotNum, slotNum, err, "reorg", metrics)
} else {
loghelper.LogReorg(slot, latestBlockRoot).Info("Updated the row that should have been marked as proposed.")
}
@ -309,9 +330,28 @@ func writeReorgs(db sql.Database, slot string, latestBlockRoot string, metrics *
metrics.IncrementReorgsInsert(1)
}
// Wrapper function that will create a transaction and execute the function.
func writeReorgs(db sql.Database, slot string, latestBlockRoot string, metrics *BeaconClientMetrics) {
ctx := context.Background()
tx, err := db.Begin(ctx)
if err != nil {
loghelper.LogReorgError(slot, latestBlockRoot, err).Fatal("Unable to create a new transaction for reorgs")
}
defer func() {
err := tx.Rollback(ctx)
if err != nil && err != pgx.ErrTxClosed {
loghelper.LogError(err).Error("We were unable to Rollback a transaction for reorgs")
}
}()
transactReorgs(db, tx, ctx, slot, latestBlockRoot, metrics)
if err = tx.Commit(ctx); err != nil {
loghelper.LogReorgError(slot, latestBlockRoot, err).Fatal("Unable to execute the transaction for reorgs")
}
}
// Update the slots table by marking the old slot's as forked.
func updateForked(db sql.Database, slot string, latestBlockRoot string) (int64, error) {
res, err := db.Exec(context.Background(), UpdateForkedStmt, slot, latestBlockRoot)
func updateForked(tx sql.Tx, ctx context.Context, slot string, latestBlockRoot string) (int64, error) {
res, err := tx.Exec(ctx, UpdateForkedStmt, slot, latestBlockRoot)
if err != nil {
loghelper.LogReorgError(slot, latestBlockRoot, err).Error("We are unable to update the ethcl.slots table with the forked slots")
return 0, err
@ -324,8 +364,9 @@ func updateForked(db sql.Database, slot string, latestBlockRoot string) (int64,
return count, err
}
func updateProposed(db sql.Database, slot string, latestBlockRoot string) (int64, error) {
res, err := db.Exec(context.Background(), UpdateProposedStmt, slot, latestBlockRoot)
// Mark a slot as proposed.
func updateProposed(tx sql.Tx, ctx context.Context, slot string, latestBlockRoot string) (int64, error) {
res, err := tx.Exec(ctx, UpdateProposedStmt, slot, latestBlockRoot)
if err != nil {
loghelper.LogReorgError(slot, latestBlockRoot, err).Error("We are unable to update the ethcl.slots table with the proposed slot.")
return 0, err
@ -339,10 +380,10 @@ func updateProposed(db sql.Database, slot string, latestBlockRoot string) (int64
return count, err
}
// A wrapper function to call upsertKnownGaps. This function will break down the range of known_gaos into
// A wrapper function to call upsertKnownGaps. This function will break down the range of known_gaps into
// smaller chunks. For example, instead of having an entry of 1-101, if we increment the entries by 10 slots, we would
// have 10 entries as follows: 1-10, 11-20, etc...
func writeKnownGaps(db sql.Database, tableIncrement int, startSlot int, endSlot int, entryError error, entryProcess string, metric *BeaconClientMetrics) {
func transactKnownGaps(tx sql.Tx, ctx context.Context, tableIncrement int, startSlot int, endSlot int, entryError error, entryProcess string, metric *BeaconClientMetrics) {
if endSlot-startSlot <= tableIncrement {
kgModel := DbKnownGaps{
StartSlot: strconv.Itoa(startSlot),
@ -352,7 +393,7 @@ func writeKnownGaps(db sql.Database, tableIncrement int, startSlot int, endSlot
EntryError: entryError.Error(),
EntryProcess: entryProcess,
}
upsertKnownGaps(db, kgModel, metric)
upsertKnownGaps(tx, ctx, kgModel, metric)
} else {
totalSlots := endSlot - startSlot
var chunks int
@ -377,15 +418,34 @@ func writeKnownGaps(db sql.Database, tableIncrement int, startSlot int, endSlot
EntryError: entryError.Error(),
EntryProcess: entryProcess,
}
upsertKnownGaps(db, kgModel, metric)
upsertKnownGaps(tx, ctx, kgModel, metric)
}
}
}
// Wrapper function, instead of adding the knownGaps entries to a transaction, it will
// create the transaction and write it.
func writeKnownGaps(db sql.Database, tableIncrement int, startSlot int, endSlot int, entryError error, entryProcess string, metric *BeaconClientMetrics) {
ctx := context.Background()
tx, err := db.Begin(ctx)
if err != nil {
loghelper.LogSlotRangeError(strconv.Itoa(startSlot), strconv.Itoa(endSlot), err).Fatal("Unable to create a new transaction for knownGaps")
}
defer func() {
err := tx.Rollback(ctx)
if err != nil && err != pgx.ErrTxClosed {
loghelper.LogError(err).Error("We were unable to Rollback a transaction for reorgs")
}
}()
transactKnownGaps(tx, ctx, tableIncrement, startSlot, endSlot, entryError, entryProcess, metric)
if err = tx.Commit(ctx); err != nil {
loghelper.LogSlotRangeError(strconv.Itoa(startSlot), strconv.Itoa(endSlot), err).Fatal("Unable to execute the transaction for knownGaps")
}
}
// A function to upsert a single entry to the ethcl.known_gaps table.
func upsertKnownGaps(db sql.Database, knModel DbKnownGaps, metric *BeaconClientMetrics) {
_, err := db.Exec(context.Background(), UpsertKnownGapsStmt, knModel.StartSlot, knModel.EndSlot,
func upsertKnownGaps(tx sql.Tx, ctx context.Context, knModel DbKnownGaps, metric *BeaconClientMetrics) {
_, err := tx.Exec(ctx, UpsertKnownGapsStmt, knModel.StartSlot, knModel.EndSlot,
knModel.CheckedOut, knModel.ReprocessingError, knModel.EntryError, knModel.EntryProcess)
if err != nil {
log.WithFields(log.Fields{

2
pkg/beaconclient/processhistoric.go
View File

@ -150,7 +150,7 @@ func getBatchProcessRow(db sql.Database, getStartEndSlotStmt string, checkNewRow
}
defer func() {
err := tx.Rollback(ctx)
if err != nil {
if err != nil && err != pgx.ErrTxClosed {
loghelper.LogError(err).Error("We were unable to Rollback a transaction")
errCount = append(errCount, err)
}

35
pkg/beaconclient/processslot.go
View File

@ -26,6 +26,7 @@ import (
"strconv"
"strings"
"github.com/jackc/pgx/v4"
si "github.com/prysmaticlabs/prysm/consensus-types/interfaces"
"github.com/prysmaticlabs/prysm/consensus-types/wrapper"
dt "github.com/prysmaticlabs/prysm/encoding/ssz/detect"
@ -79,7 +80,7 @@ type ProcessSlot struct {
// This function will do all the work to process the slot and write it to the DB.
// It will return the error and error process. The error process is used for providing reach detail to the
// known_gaps table.
func processFullSlot(db sql.Database, serverAddress string, slot int, blockRoot string, stateRoot string, previousSlot int, previousBlockRoot string, headOrHistoric string, metrics *BeaconClientMetrics, knownGapsTableIncrement int) (error, string) {
func processFullSlot(db sql.Database, serverAddress string, slot int, blockRoot string, stateRoot string, previousSlot int, previousBlockRoot string, headOrHistoric string, metrics *BeaconClientMetrics, knownGapsTableIncrement int, checkDb bool) (error, string) {
ps := &ProcessSlot{
Slot: slot,
BlockRoot: blockRoot,
@ -89,6 +90,10 @@ func processFullSlot(db sql.Database, serverAddress string, slot int, blockRoot
Metrics: metrics,
}
if checkDb {
// Check the DB to see if this slot exists.
}
g, _ := errgroup.WithContext(context.Background())
vUnmarshalerCh := make(chan *dt.VersionedUnmarshaler, 1)
@ -120,7 +125,13 @@ func processFullSlot(db sql.Database, serverAddress string, slot int, blockRoot
return err, "blockRoot"
}
// Write the object to the DB.
err = dw.writeFullSlot()
defer func() {
err := dw.Tx.Rollback(dw.Ctx)
if err != nil && err != pgx.ErrTxClosed {
loghelper.LogError(err).Error("We were unable to Rollback a transaction")
}
}()
err = dw.transactFullSlot()
if err != nil {
return err, "processSlot"
}
@ -131,8 +142,14 @@ func processFullSlot(db sql.Database, serverAddress string, slot int, blockRoot
return fmt.Errorf("headOrHistoric must be either historic or head!"), ""
}
if ps.HeadOrHistoric == "head" && previousSlot != 0 && previousBlockRoot != "" && ps.Status != "skipped" {
ps.checkPreviousSlot(previousSlot, previousBlockRoot, knownGapsTableIncrement)
ps.checkPreviousSlot(dw.Tx, dw.Ctx, previousSlot, previousBlockRoot, knownGapsTableIncrement)
}
// Commit the transaction
if err = dw.Tx.Commit(dw.Ctx); err != nil {
return err, "transactionCommit"
}
return nil, ""
}
@ -142,7 +159,7 @@ func processHeadSlot(db sql.Database, serverAddress string, slot int, blockRoot
if previousSlot == 0 && previousBlockRoot == "" {
writeStartUpGaps(db, knownGapsTableIncrement, slot, metrics)
}
err, errReason := processFullSlot(db, serverAddress, slot, blockRoot, stateRoot, previousSlot, previousBlockRoot, "head", metrics, knownGapsTableIncrement)
err, errReason := processFullSlot(db, serverAddress, slot, blockRoot, stateRoot, previousSlot, previousBlockRoot, "head", metrics, knownGapsTableIncrement, true)
if err != nil {
writeKnownGaps(db, knownGapsTableIncrement, slot, slot, err, errReason, metrics)
}
@ -150,7 +167,7 @@ func processHeadSlot(db sql.Database, serverAddress string, slot int, blockRoot
// Handle a historic slot. A wrapper function for calling `handleFullSlot`.
func handleHistoricSlot(db sql.Database, serverAddress string, slot int, metrics *BeaconClientMetrics) (error, string) {
return processFullSlot(db, serverAddress, slot, "", "", 0, "", "historic", metrics, 1)
return processFullSlot(db, serverAddress, slot, "", "", 0, "", "historic", metrics, 1, true)
}
// Update the SszSignedBeaconBlock and FullSignedBeaconBlock object with their respective values.
@ -232,14 +249,14 @@ func (ps *ProcessSlot) getBeaconState(serverEndpoint string, vmCh chan<- *dt.Ver
}
// Check to make sure that the previous block we processed is the parent of the current block.
func (ps *ProcessSlot) checkPreviousSlot(previousSlot int, previousBlockRoot string, knownGapsTableIncrement int) {
func (ps *ProcessSlot) checkPreviousSlot(tx sql.Tx, ctx context.Context, previousSlot int, previousBlockRoot string, knownGapsTableIncrement int) {
parentRoot := "0x" + hex.EncodeToString(ps.FullSignedBeaconBlock.Block().ParentRoot())
if previousSlot == int(ps.FullBeaconState.Slot()) {
log.WithFields(log.Fields{
"slot": ps.FullBeaconState.Slot(),
"fork": true,
}).Warn("A fork occurred! The previous slot and current slot match.")
writeReorgs(ps.Db, strconv.Itoa(ps.Slot), ps.BlockRoot, ps.Metrics)
transactReorgs(ps.Db, tx, ctx, strconv.Itoa(ps.Slot), ps.BlockRoot, ps.Metrics)
} else if previousSlot > int(ps.FullBeaconState.Slot()) {
log.WithFields(log.Fields{
"previousSlot": previousSlot,
@ -250,13 +267,13 @@ func (ps *ProcessSlot) checkPreviousSlot(previousSlot int, previousBlockRoot str
"previousSlot": previousSlot,
"currentSlot": ps.FullBeaconState.Slot(),
}).Error("We skipped a few slots.")
writeKnownGaps(ps.Db, knownGapsTableIncrement, previousSlot+1, int(ps.FullBeaconState.Slot())-1, fmt.Errorf("Gaps during head processing"), "headGaps", ps.Metrics)
transactKnownGaps(tx, ctx, knownGapsTableIncrement, previousSlot+1, int(ps.FullBeaconState.Slot())-1, fmt.Errorf("Gaps during head processing"), "headGaps", ps.Metrics)
} else if previousBlockRoot != parentRoot {
log.WithFields(log.Fields{
"previousBlockRoot": previousBlockRoot,
"currentBlockParent": parentRoot,
}).Error("The previousBlockRoot does not match the current blocks parent, an unprocessed fork might have occurred.")
writeReorgs(ps.Db, strconv.Itoa(previousSlot), parentRoot, ps.Metrics)
transactReorgs(ps.Db, tx, ctx, strconv.Itoa(previousSlot), parentRoot, ps.Metrics)
} else {
log.Debug("Previous Slot and Current Slot are one distance from each other.")
}