mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2024-12-23 11:57:18 +00:00
103 lines
3.3 KiB
Go
103 lines
3.3 KiB
Go
package stategen
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import (
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"context"
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"encoding/hex"
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"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
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"github.com/prysmaticlabs/prysm/beacon-chain/db/filters"
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"github.com/prysmaticlabs/prysm/beacon-chain/state"
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"github.com/prysmaticlabs/prysm/shared/bytesutil"
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"github.com/sirupsen/logrus"
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"go.opencensus.io/trace"
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)
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// MigrateToCold advances the split point in between the cold and hot state sections.
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// It moves the recent finalized states from the hot section to the cold section and
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// only preserve the ones that's on archived point.
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func (s *State) MigrateToCold(ctx context.Context, finalizedState *state.BeaconState, finalizedRoot [32]byte) error {
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ctx, span := trace.StartSpan(ctx, "stateGen.MigrateToCold")
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defer span.End()
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// Verify migration is sensible. The new finalized point must increase the current split slot, and
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// on an epoch boundary for hot state summary scheme to work.
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currentSplitSlot := s.splitInfo.slot
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if currentSplitSlot > finalizedState.Slot() {
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return nil
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}
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if !helpers.IsEpochStart(finalizedState.Slot()) {
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return nil
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}
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// Move the states between split slot to finalized slot from hot section to the cold section.
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filter := filters.NewFilter().SetStartSlot(currentSplitSlot).SetEndSlot(finalizedState.Slot() - 1)
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blockRoots, err := s.beaconDB.BlockRoots(ctx, filter)
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if err != nil {
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return err
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}
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for _, r := range blockRoots {
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stateSummary, err := s.beaconDB.StateSummary(ctx, r)
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if err != nil {
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return err
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}
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if stateSummary == nil || stateSummary.Slot == 0 {
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continue
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}
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archivedPointIndex := stateSummary.Slot / s.slotsPerArchivedPoint
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alreadyArchived := s.beaconDB.HasArchivedPoint(ctx, archivedPointIndex)
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if stateSummary.Slot%s.slotsPerArchivedPoint == 0 && !alreadyArchived {
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if s.beaconDB.HasState(ctx, r) {
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hotState, err := s.beaconDB.State(ctx, r)
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if err != nil {
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return err
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}
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if err := s.beaconDB.SaveArchivedPointState(ctx, hotState.Copy(), archivedPointIndex); err != nil {
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return err
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}
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} else {
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hotState, err := s.ComputeStateUpToSlot(ctx, stateSummary.Slot)
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if err != nil {
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return err
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}
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if err := s.beaconDB.SaveArchivedPointState(ctx, hotState.Copy(), archivedPointIndex); err != nil {
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return err
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}
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}
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if err := s.beaconDB.SaveArchivedPointRoot(ctx, r, archivedPointIndex); err != nil {
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return err
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}
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if err := s.beaconDB.SaveLastArchivedIndex(ctx, archivedPointIndex); err != nil {
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return err
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}
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log.WithFields(logrus.Fields{
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"slot": stateSummary.Slot,
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"archiveIndex": archivedPointIndex,
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"root": hex.EncodeToString(bytesutil.Trunc(r[:])),
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}).Info("Saved archived point during state migration")
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}
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if s.beaconDB.HasState(ctx, r) {
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if err := s.beaconDB.DeleteState(ctx, r); err != nil {
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return err
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}
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log.WithFields(logrus.Fields{
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"slot": stateSummary.Slot,
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"root": hex.EncodeToString(bytesutil.Trunc(r[:])),
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}).Info("Deleted state during migration")
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}
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s.deleteEpochBoundaryRoot(stateSummary.Slot)
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}
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// Update the split slot and root.
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s.splitInfo = &splitSlotAndRoot{slot: finalizedState.Slot(), root: finalizedRoot}
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log.WithFields(logrus.Fields{
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"slot": s.splitInfo.slot,
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"root": hex.EncodeToString(bytesutil.Trunc(s.splitInfo.root[:])),
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}).Info("Set hot and cold state split point")
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return nil
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}
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