mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2024-12-25 04:47:18 +00:00
a8ce61b387
* add cached serialized state to reduce use of proto clone * review comments * review comments * comments on cache
102 lines
2.7 KiB
Go
102 lines
2.7 KiB
Go
package db
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import (
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"errors"
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"os"
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"path"
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"sync"
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"time"
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"github.com/boltdb/bolt"
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pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
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"github.com/sirupsen/logrus"
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)
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var log = logrus.WithField("prefix", "beacondb")
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// BeaconDB manages the data layer of the beacon chain implementation.
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// The exposed methods do not have an opinion of the underlying data engine,
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// but instead reflect the beacon chain logic.
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// For example, instead of defining get, put, remove
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// This defines methods such as getBlock, saveBlocksAndAttestations, etc.
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type BeaconDB struct {
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stateLock sync.RWMutex
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currentState *pb.BeaconState
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serializedState []byte
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stateHash [32]byte
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db *bolt.DB
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DatabasePath string
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// Beacon block info in memory.
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highestBlockSlot uint64
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// We keep a map of hashes of blocks which failed processing for blacklisting.
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badBlockHashes map[[32]byte]bool
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badBlocksLock sync.RWMutex
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// Beacon chain deposits in memory.
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pendingDeposits []*depositContainer
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deposits []*depositContainer
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depositsLock sync.RWMutex
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chainstartPubkeys map[string]bool
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chainstartPubkeysLock sync.RWMutex
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}
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// Close closes the underlying boltdb database.
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func (db *BeaconDB) Close() error {
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return db.db.Close()
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}
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func (db *BeaconDB) update(fn func(*bolt.Tx) error) error {
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return db.db.Update(fn)
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}
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func (db *BeaconDB) batch(fn func(*bolt.Tx) error) error {
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return db.db.Batch(fn)
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}
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func (db *BeaconDB) view(fn func(*bolt.Tx) error) error {
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return db.db.View(fn)
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}
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func createBuckets(tx *bolt.Tx, buckets ...[]byte) error {
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for _, bucket := range buckets {
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if _, err := tx.CreateBucketIfNotExists(bucket); err != nil {
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return err
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}
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}
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return nil
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}
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// NewDB initializes a new DB. If the genesis block and states do not exist, this method creates it.
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func NewDB(dirPath string) (*BeaconDB, error) {
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if err := os.MkdirAll(dirPath, 0700); err != nil {
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return nil, err
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}
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datafile := path.Join(dirPath, "beaconchain.db")
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boltDB, err := bolt.Open(datafile, 0600, &bolt.Options{Timeout: 1 * time.Second})
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if err != nil {
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if err == bolt.ErrTimeout {
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return nil, errors.New("cannot obtain database lock, database may be in use by another process")
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}
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return nil, err
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}
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db := &BeaconDB{db: boltDB, DatabasePath: dirPath}
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if err := db.update(func(tx *bolt.Tx) error {
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return createBuckets(tx, blockBucket, attestationBucket, mainChainBucket, histStateBucket,
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chainInfoBucket, cleanupHistoryBucket, blockOperationsBucket, validatorBucket)
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}); err != nil {
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return nil, err
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}
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return db, err
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}
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// ClearDB removes the previously stored directory at the data directory.
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func ClearDB(dirPath string) error {
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if _, err := os.Stat(dirPath); os.IsNotExist(err) {
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return nil
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}
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return os.RemoveAll(dirPath)
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}
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