mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2024-12-25 12:57:18 +00:00
c419e4ed8f
* Add database migrations, still need to update the API usage... * gofmt goimports * progress * Merge branch 'master' of github.com:prysmaticlabs/prysm into index-migration * use slot instead of index * rename LastArchivedIndex to LastArchivedSlot * rename LastArchivedIndexRoot to LastArchivedRoot * remove unused HighestSlotStates method * deprecate old key, include in migration * deprecate old key, include in migration * remove blocks index in migration * rename bucket variable * fix code to pass tests * Merge branch 'master' of github.com:prysmaticlabs/prysm into index-migration * gofmt, goimports * fix * Add state slot index * progress * lint * fix build * Merge branch 'master' of github.com:prysmaticlabs/prysm into index-migration * kafka * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * remove SaveArchivedPointRoot, a few other big changes * Merge branch 'index-migration' of github.com:prysmaticlabs/prysm into index-migration * fix tests and lint * lint again * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * block migration, some renaming * gaz, gofmt * add tests * change index to uint bytes * Merge branch 'index-migration' of github.com:prysmaticlabs/prysm into index-migration * rm method notes * stop if the bucket doesn't exist * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * @rauljordan pr feedback * Simplify * Merge refs/heads/master into index-migration * Remove unused method, add roundtrip test * gofmt * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge refs/heads/master into index-migration * Merge branch 'master' of github.com:prysmaticlabs/prysm into index-migration
463 lines
17 KiB
Go
463 lines
17 KiB
Go
// Package blockchain defines the life-cycle of the blockchain at the core of
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// eth2, including processing of new blocks and attestations using casper
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// proof of stake.
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package blockchain
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import (
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"context"
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"fmt"
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"runtime"
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"sync"
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"time"
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"github.com/pkg/errors"
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ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
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"github.com/prysmaticlabs/prysm/beacon-chain/cache"
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"github.com/prysmaticlabs/prysm/beacon-chain/cache/depositcache"
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"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
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"github.com/prysmaticlabs/prysm/beacon-chain/core/feed"
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statefeed "github.com/prysmaticlabs/prysm/beacon-chain/core/feed/state"
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"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
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"github.com/prysmaticlabs/prysm/beacon-chain/core/state"
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"github.com/prysmaticlabs/prysm/beacon-chain/db"
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"github.com/prysmaticlabs/prysm/beacon-chain/flags"
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f "github.com/prysmaticlabs/prysm/beacon-chain/forkchoice"
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"github.com/prysmaticlabs/prysm/beacon-chain/forkchoice/protoarray"
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"github.com/prysmaticlabs/prysm/beacon-chain/operations/attestations"
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"github.com/prysmaticlabs/prysm/beacon-chain/operations/slashings"
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"github.com/prysmaticlabs/prysm/beacon-chain/operations/voluntaryexits"
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"github.com/prysmaticlabs/prysm/beacon-chain/p2p"
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"github.com/prysmaticlabs/prysm/beacon-chain/powchain"
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stateTrie "github.com/prysmaticlabs/prysm/beacon-chain/state"
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"github.com/prysmaticlabs/prysm/beacon-chain/state/stategen"
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"github.com/prysmaticlabs/prysm/beacon-chain/state/stateutil"
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pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
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"github.com/prysmaticlabs/prysm/shared/bytesutil"
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"github.com/prysmaticlabs/prysm/shared/params"
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"github.com/prysmaticlabs/prysm/shared/slotutil"
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"go.opencensus.io/trace"
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)
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// Service represents a service that handles the internal
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// logic of managing the full PoS beacon chain.
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type Service struct {
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ctx context.Context
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cancel context.CancelFunc
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beaconDB db.HeadAccessDatabase
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depositCache *depositcache.DepositCache
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chainStartFetcher powchain.ChainStartFetcher
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attPool attestations.Pool
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slashingPool *slashings.Pool
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exitPool *voluntaryexits.Pool
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genesisTime time.Time
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p2p p2p.Broadcaster
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maxRoutines int
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head *head
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headLock sync.RWMutex
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stateNotifier statefeed.Notifier
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genesisRoot [32]byte
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forkChoiceStore f.ForkChoicer
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justifiedCheckpt *ethpb.Checkpoint
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prevJustifiedCheckpt *ethpb.Checkpoint
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bestJustifiedCheckpt *ethpb.Checkpoint
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finalizedCheckpt *ethpb.Checkpoint
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prevFinalizedCheckpt *ethpb.Checkpoint
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nextEpochBoundarySlot uint64
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voteLock sync.RWMutex
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initSyncState map[[32]byte]*stateTrie.BeaconState
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boundaryRoots [][32]byte
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initSyncStateLock sync.RWMutex
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checkpointState *cache.CheckpointStateCache
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checkpointStateLock sync.Mutex
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stateGen *stategen.State
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opsService *attestations.Service
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initSyncBlocks map[[32]byte]*ethpb.SignedBeaconBlock
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initSyncBlocksLock sync.RWMutex
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recentCanonicalBlocks map[[32]byte]bool
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recentCanonicalBlocksLock sync.RWMutex
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justifiedBalances []uint64
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justifiedBalancesLock sync.RWMutex
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}
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// Config options for the service.
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type Config struct {
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BeaconBlockBuf int
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ChainStartFetcher powchain.ChainStartFetcher
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BeaconDB db.HeadAccessDatabase
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DepositCache *depositcache.DepositCache
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AttPool attestations.Pool
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ExitPool *voluntaryexits.Pool
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SlashingPool *slashings.Pool
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P2p p2p.Broadcaster
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MaxRoutines int
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StateNotifier statefeed.Notifier
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ForkChoiceStore f.ForkChoicer
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OpsService *attestations.Service
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StateGen *stategen.State
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}
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// NewService instantiates a new block service instance that will
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// be registered into a running beacon node.
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func NewService(ctx context.Context, cfg *Config) (*Service, error) {
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ctx, cancel := context.WithCancel(ctx)
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return &Service{
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ctx: ctx,
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cancel: cancel,
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beaconDB: cfg.BeaconDB,
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depositCache: cfg.DepositCache,
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chainStartFetcher: cfg.ChainStartFetcher,
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attPool: cfg.AttPool,
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exitPool: cfg.ExitPool,
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slashingPool: cfg.SlashingPool,
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p2p: cfg.P2p,
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maxRoutines: cfg.MaxRoutines,
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stateNotifier: cfg.StateNotifier,
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forkChoiceStore: cfg.ForkChoiceStore,
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initSyncState: make(map[[32]byte]*stateTrie.BeaconState),
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boundaryRoots: [][32]byte{},
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checkpointState: cache.NewCheckpointStateCache(),
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opsService: cfg.OpsService,
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stateGen: cfg.StateGen,
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initSyncBlocks: make(map[[32]byte]*ethpb.SignedBeaconBlock),
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recentCanonicalBlocks: make(map[[32]byte]bool),
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justifiedBalances: make([]uint64, 0),
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}, nil
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}
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// Start a blockchain service's main event loop.
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func (s *Service) Start() {
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ctx := context.TODO()
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beaconState, err := s.beaconDB.HeadState(ctx)
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if err != nil {
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log.Fatalf("Could not fetch beacon state: %v", err)
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}
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// For running initial sync with state cache, in an event of restart, we use
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// last finalized check point as start point to sync instead of head
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// state. This is because we no longer save state every slot during sync.
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cp, err := s.beaconDB.FinalizedCheckpoint(ctx)
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if err != nil {
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log.Fatalf("Could not fetch finalized cp: %v", err)
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}
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if beaconState == nil {
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beaconState, err = s.stateGen.StateByRoot(ctx, bytesutil.ToBytes32(cp.Root))
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if err != nil {
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log.Fatalf("Could not fetch beacon state by root: %v", err)
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}
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}
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// Make sure that attestation processor is subscribed and ready for state initializing event.
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attestationProcessorSubscribed := make(chan struct{}, 1)
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// If the chain has already been initialized, simply start the block processing routine.
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if beaconState != nil {
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log.Info("Blockchain data already exists in DB, initializing...")
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s.genesisTime = time.Unix(int64(beaconState.GenesisTime()), 0)
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s.opsService.SetGenesisTime(beaconState.GenesisTime())
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if err := s.initializeChainInfo(ctx); err != nil {
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log.Fatalf("Could not set up chain info: %v", err)
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}
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// We start a counter to genesis, if needed.
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gState, err := s.beaconDB.GenesisState(ctx)
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if err != nil {
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log.Fatalf("Could not retrieve genesis state: %v", err)
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}
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go slotutil.CountdownToGenesis(ctx, s.genesisTime, uint64(gState.NumValidators()))
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justifiedCheckpoint, err := s.beaconDB.JustifiedCheckpoint(ctx)
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if err != nil {
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log.Fatalf("Could not get justified checkpoint: %v", err)
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}
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finalizedCheckpoint, err := s.beaconDB.FinalizedCheckpoint(ctx)
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if err != nil {
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log.Fatalf("Could not get finalized checkpoint: %v", err)
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}
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// Resume fork choice.
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s.justifiedCheckpt = stateTrie.CopyCheckpoint(justifiedCheckpoint)
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if err := s.cacheJustifiedStateBalances(ctx, bytesutil.ToBytes32(s.justifiedCheckpt.Root)); err != nil {
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log.Fatalf("Could not cache justified state balances: %v", err)
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}
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s.prevJustifiedCheckpt = stateTrie.CopyCheckpoint(justifiedCheckpoint)
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s.bestJustifiedCheckpt = stateTrie.CopyCheckpoint(justifiedCheckpoint)
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s.finalizedCheckpt = stateTrie.CopyCheckpoint(finalizedCheckpoint)
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s.prevFinalizedCheckpt = stateTrie.CopyCheckpoint(finalizedCheckpoint)
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s.resumeForkChoice(justifiedCheckpoint, finalizedCheckpoint)
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s.stateNotifier.StateFeed().Send(&feed.Event{
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Type: statefeed.Initialized,
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Data: &statefeed.InitializedData{
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StartTime: s.genesisTime,
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GenesisValidatorsRoot: beaconState.GenesisValidatorRoot(),
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},
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})
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} else {
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log.Info("Waiting to reach the validator deposit threshold to start the beacon chain...")
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if s.chainStartFetcher == nil {
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log.Fatal("Not configured web3Service for POW chain")
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return // return need for TestStartUninitializedChainWithoutConfigPOWChain.
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}
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go func() {
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stateChannel := make(chan *feed.Event, 1)
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stateSub := s.stateNotifier.StateFeed().Subscribe(stateChannel)
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defer stateSub.Unsubscribe()
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<-attestationProcessorSubscribed
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for {
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select {
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case event := <-stateChannel:
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if event.Type == statefeed.ChainStarted {
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data, ok := event.Data.(*statefeed.ChainStartedData)
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if !ok {
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log.Error("event data is not type *statefeed.ChainStartedData")
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return
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}
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log.WithField("starttime", data.StartTime).Debug("Received chain start event")
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s.processChainStartTime(ctx, data.StartTime)
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return
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}
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case <-s.ctx.Done():
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log.Debug("Context closed, exiting goroutine")
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return
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case err := <-stateSub.Err():
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log.WithError(err).Error("Subscription to state notifier failed")
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return
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}
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}
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}()
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}
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go s.processAttestation(attestationProcessorSubscribed)
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}
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// processChainStartTime initializes a series of deposits from the ChainStart deposits in the eth1
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// deposit contract, initializes the beacon chain's state, and kicks off the beacon chain.
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func (s *Service) processChainStartTime(ctx context.Context, genesisTime time.Time) {
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preGenesisState := s.chainStartFetcher.PreGenesisState()
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initializedState, err := s.initializeBeaconChain(ctx, genesisTime, preGenesisState, s.chainStartFetcher.ChainStartEth1Data())
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if err != nil {
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log.Fatalf("Could not initialize beacon chain: %v", err)
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}
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// We start a counter to genesis, if needed.
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go slotutil.CountdownToGenesis(ctx, genesisTime, uint64(initializedState.NumValidators()))
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// We send out a state initialized event to the rest of the services
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// running in the beacon node.
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s.stateNotifier.StateFeed().Send(&feed.Event{
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Type: statefeed.Initialized,
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Data: &statefeed.InitializedData{
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StartTime: genesisTime,
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GenesisValidatorsRoot: initializedState.GenesisValidatorRoot(),
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},
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})
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}
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// initializes the state and genesis block of the beacon chain to persistent storage
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// based on a genesis timestamp value obtained from the ChainStart event emitted
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// by the ETH1.0 Deposit Contract and the POWChain service of the node.
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func (s *Service) initializeBeaconChain(
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ctx context.Context,
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genesisTime time.Time,
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preGenesisState *stateTrie.BeaconState,
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eth1data *ethpb.Eth1Data) (*stateTrie.BeaconState, error) {
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_, span := trace.StartSpan(context.Background(), "beacon-chain.Service.initializeBeaconChain")
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defer span.End()
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s.genesisTime = genesisTime
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unixTime := uint64(genesisTime.Unix())
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genesisState, err := state.OptimizedGenesisBeaconState(unixTime, preGenesisState, eth1data)
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if err != nil {
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return nil, errors.Wrap(err, "could not initialize genesis state")
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}
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if err := s.saveGenesisData(ctx, genesisState); err != nil {
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return nil, errors.Wrap(err, "could not save genesis data")
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}
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log.Info("Initialized beacon chain genesis state")
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// Clear out all pre-genesis data now that the state is initialized.
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s.chainStartFetcher.ClearPreGenesisData()
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// Update committee shuffled indices for genesis epoch.
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if err := helpers.UpdateCommitteeCache(genesisState, 0 /* genesis epoch */); err != nil {
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return nil, err
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}
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if err := helpers.UpdateProposerIndicesInCache(genesisState, 0 /* genesis epoch */); err != nil {
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return nil, err
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}
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s.opsService.SetGenesisTime(genesisState.GenesisTime())
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return genesisState, nil
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}
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// Stop the blockchain service's main event loop and associated goroutines.
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func (s *Service) Stop() error {
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defer s.cancel()
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return nil
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}
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// Status always returns nil unless there is an error condition that causes
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// this service to be unhealthy.
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func (s *Service) Status() error {
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if runtime.NumGoroutine() > s.maxRoutines {
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return fmt.Errorf("too many goroutines %d", runtime.NumGoroutine())
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}
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return nil
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}
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// ClearCachedStates removes all stored caches states. This is done after the node
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// is synced.
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func (s *Service) ClearCachedStates() {
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s.initSyncState = map[[32]byte]*stateTrie.BeaconState{}
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}
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// This gets called when beacon chain is first initialized to save genesis data (state, block, and more) in db.
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func (s *Service) saveGenesisData(ctx context.Context, genesisState *stateTrie.BeaconState) error {
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stateRoot, err := genesisState.HashTreeRoot(ctx)
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if err != nil {
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return err
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}
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genesisBlk := blocks.NewGenesisBlock(stateRoot[:])
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genesisBlkRoot, err := stateutil.BlockRoot(genesisBlk.Block)
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if err != nil {
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return errors.Wrap(err, "could not get genesis block root")
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}
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s.genesisRoot = genesisBlkRoot
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if err := s.beaconDB.SaveBlock(ctx, genesisBlk); err != nil {
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return errors.Wrap(err, "could not save genesis block")
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}
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if err := s.beaconDB.SaveState(ctx, genesisState, genesisBlkRoot); err != nil {
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return errors.Wrap(err, "could not save genesis state")
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}
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if err := s.beaconDB.SaveStateSummary(ctx, &pb.StateSummary{
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Slot: 0,
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Root: genesisBlkRoot[:],
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}); err != nil {
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return err
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}
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s.stateGen.SaveFinalizedState(0, genesisBlkRoot, genesisState)
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if err := s.beaconDB.SaveHeadBlockRoot(ctx, genesisBlkRoot); err != nil {
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return errors.Wrap(err, "could not save head block root")
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}
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if err := s.beaconDB.SaveGenesisBlockRoot(ctx, genesisBlkRoot); err != nil {
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return errors.Wrap(err, "could not save genesis block root")
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}
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// Finalized checkpoint at genesis is a zero hash.
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genesisCheckpoint := genesisState.FinalizedCheckpoint()
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s.justifiedCheckpt = stateTrie.CopyCheckpoint(genesisCheckpoint)
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if err := s.cacheJustifiedStateBalances(ctx, genesisBlkRoot); err != nil {
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return err
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}
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s.prevJustifiedCheckpt = stateTrie.CopyCheckpoint(genesisCheckpoint)
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s.bestJustifiedCheckpt = stateTrie.CopyCheckpoint(genesisCheckpoint)
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s.finalizedCheckpt = stateTrie.CopyCheckpoint(genesisCheckpoint)
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s.prevFinalizedCheckpt = stateTrie.CopyCheckpoint(genesisCheckpoint)
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if err := s.forkChoiceStore.ProcessBlock(ctx,
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genesisBlk.Block.Slot,
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genesisBlkRoot,
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params.BeaconConfig().ZeroHash,
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[32]byte{},
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genesisCheckpoint.Epoch,
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genesisCheckpoint.Epoch); err != nil {
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log.Fatalf("Could not process genesis block for fork choice: %v", err)
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}
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s.setHead(genesisBlkRoot, genesisBlk, genesisState)
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return nil
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}
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// This gets called to initialize chain info variables using the finalized checkpoint stored in DB
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func (s *Service) initializeChainInfo(ctx context.Context) error {
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genesisBlock, err := s.beaconDB.GenesisBlock(ctx)
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if err != nil {
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return errors.Wrap(err, "could not get genesis block from db")
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}
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if genesisBlock == nil {
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return errors.New("no genesis block in db")
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}
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genesisBlkRoot, err := stateutil.BlockRoot(genesisBlock.Block)
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if err != nil {
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return errors.Wrap(err, "could not get signing root of genesis block")
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}
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s.genesisRoot = genesisBlkRoot
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if flags.Get().UnsafeSync {
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headBlock, err := s.beaconDB.HeadBlock(ctx)
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if err != nil {
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return errors.Wrap(err, "could not retrieve head block")
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}
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headRoot, err := stateutil.BlockRoot(headBlock.Block)
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if err != nil {
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return errors.Wrap(err, "could not hash head block")
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}
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headState, err := s.beaconDB.HeadState(ctx)
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if err != nil {
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return errors.Wrap(err, "could not retrieve head state")
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}
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s.setHead(headRoot, headBlock, headState)
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return nil
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}
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finalized, err := s.beaconDB.FinalizedCheckpoint(ctx)
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if err != nil {
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return errors.Wrap(err, "could not get finalized checkpoint from db")
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}
|
|
if finalized == nil {
|
|
// This should never happen. At chain start, the finalized checkpoint
|
|
// would be the genesis state and block.
|
|
return errors.New("no finalized epoch in the database")
|
|
}
|
|
finalizedRoot := bytesutil.ToBytes32(finalized.Root)
|
|
var finalizedState *stateTrie.BeaconState
|
|
|
|
finalizedState, err = s.stateGen.Resume(ctx)
|
|
if err != nil {
|
|
return errors.Wrap(err, "could not get finalized state from db")
|
|
}
|
|
finalizedRoot = s.beaconDB.LastArchivedRoot(ctx)
|
|
if finalizedRoot == params.BeaconConfig().ZeroHash {
|
|
finalizedRoot = bytesutil.ToBytes32(finalized.Root)
|
|
}
|
|
|
|
finalizedBlock, err := s.beaconDB.Block(ctx, finalizedRoot)
|
|
if err != nil {
|
|
return errors.Wrap(err, "could not get finalized block from db")
|
|
}
|
|
|
|
if finalizedState == nil || finalizedBlock == nil {
|
|
return errors.New("finalized state and block can't be nil")
|
|
}
|
|
s.setHead(finalizedRoot, finalizedBlock, finalizedState)
|
|
|
|
return nil
|
|
}
|
|
|
|
// This is called when a client starts from non-genesis slot. This passes last justified and finalized
|
|
// information to fork choice service to initializes fork choice store.
|
|
func (s *Service) resumeForkChoice(justifiedCheckpoint *ethpb.Checkpoint, finalizedCheckpoint *ethpb.Checkpoint) {
|
|
store := protoarray.New(justifiedCheckpoint.Epoch, finalizedCheckpoint.Epoch, bytesutil.ToBytes32(finalizedCheckpoint.Root))
|
|
s.forkChoiceStore = store
|
|
}
|
|
|
|
// This returns true if block has been processed before. Two ways to verify the block has been processed:
|
|
// 1.) Check fork choice store.
|
|
// 2.) Check DB.
|
|
// Checking 1.) is ten times faster than checking 2.)
|
|
func (s *Service) hasBlock(ctx context.Context, root [32]byte) bool {
|
|
if s.forkChoiceStore.HasNode(root) {
|
|
return true
|
|
}
|
|
|
|
return s.beaconDB.HasBlock(ctx, root)
|
|
}
|