mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2024-12-25 12:57:18 +00:00
7f7866ff2a
* Starting a quick PoC * Rate limit to one epoch worth of blocks in memory * Proof of concept working * Quick comment out * Save previous finalized checkpoint * Test * Minor fixes * More run time fixes * Remove panic * Feature flag * Removed unused methods * Fixed tests * E2e test * comment * Compatible with current initial sync * Starting * New cache * Cache getters and setters * It should be part of state gen * Need to use cache for DB * Don't have to use finalized state * Rm unused file * some changes to memory mgmt when using mempool * More run time fixes * Can sync to head * Feedback * Revert "some changes to memory mgmt when using mempool" This reverts commit f5b3e7ff4714fef9f0397007f519a45fa259ad24. * Fixed sync tests * Fixed existing tests * Test for state summary getter * Gaz * Fix kafka passthrough * Fixed inputs * Gaz * Fixed build * Fixed visibility * Trying without the ignore * Didn't work.. * Fix kafka Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com> Co-authored-by: Preston Van Loon <preston@prysmaticlabs.com>
84 lines
2.8 KiB
Go
84 lines
2.8 KiB
Go
package stategen
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import (
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"context"
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"sync"
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"github.com/prysmaticlabs/prysm/beacon-chain/cache"
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"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
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"github.com/prysmaticlabs/prysm/beacon-chain/db"
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"github.com/prysmaticlabs/prysm/beacon-chain/state"
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"github.com/prysmaticlabs/prysm/shared/params"
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"go.opencensus.io/trace"
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)
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const archivedInterval = 256
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// State represents a management object that handles the internal
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// logic of maintaining both hot and cold states in DB.
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type State struct {
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beaconDB db.NoHeadAccessDatabase
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slotsPerArchivedPoint uint64
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epochBoundarySlotToRoot map[uint64][32]byte
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epochBoundaryLock sync.RWMutex
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hotStateCache *cache.HotStateCache
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splitInfo *splitSlotAndRoot
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stateSummaryCache *cache.StateSummaryCache
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}
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// This tracks the split point. The point where slot and the block root of
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// cold and hot sections of the DB splits.
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type splitSlotAndRoot struct {
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slot uint64
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root [32]byte
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}
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// New returns a new state management object.
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func New(db db.NoHeadAccessDatabase, stateSummaryCache *cache.StateSummaryCache) *State {
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return &State{
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beaconDB: db,
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epochBoundarySlotToRoot: make(map[uint64][32]byte),
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hotStateCache: cache.NewHotStateCache(),
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splitInfo: &splitSlotAndRoot{slot: 0, root: params.BeaconConfig().ZeroHash},
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slotsPerArchivedPoint: archivedInterval,
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stateSummaryCache: stateSummaryCache,
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}
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}
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// Resume resumes a new state management object from previously saved finalized check point in DB.
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func (s *State) Resume(ctx context.Context) (*state.BeaconState, error) {
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ctx, span := trace.StartSpan(ctx, "stateGen.Resume")
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defer span.End()
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lastArchivedRoot := s.beaconDB.LastArchivedIndexRoot(ctx)
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lastArchivedState, err := s.beaconDB.State(ctx, lastArchivedRoot)
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if err != nil {
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return nil, err
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}
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// Resume as genesis state if there's no last archived state.
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if lastArchivedState == nil {
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return s.beaconDB.GenesisState(ctx)
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}
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s.splitInfo = &splitSlotAndRoot{slot: lastArchivedState.Slot(), root: lastArchivedRoot}
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// In case the finalized state slot was skipped.
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slot := lastArchivedState.Slot()
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if !helpers.IsEpochStart(slot) {
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slot = helpers.StartSlot(helpers.SlotToEpoch(slot) + 1)
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}
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return lastArchivedState, nil
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}
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// This verifies the archive point frequency is valid. It checks the interval
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// is a divisor of the number of slots per epoch. This ensures we have at least one
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// archive point within range of our state root history when iterating
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// backwards. It also ensures the archive points align with hot state summaries
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// which makes it quicker to migrate hot to cold.
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func verifySlotsPerArchivePoint(slotsPerArchivePoint uint64) bool {
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return slotsPerArchivePoint > 0 &&
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slotsPerArchivePoint%params.BeaconConfig().SlotsPerEpoch == 0
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}
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