mirror of
https://github.com/kaspanet/kaspad.git
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0fa13357c3
* [NOD-1566] Add a dependency to golang-lru. * [NOD-1566] Add caching to blockstore.go. * [NOD-1566] Add LRUCache to all store objects and initialize them. * [NOD-1566] Add caching to acceptanceDataStore. * [NOD-1566] Add caching to blockHeaderStore. * [NOD-1566] Implement a simpler LRU cache. * [NOD-1566] Use the simpler cache implementation everywhere. * [NOD-1566] Remove dependency in golang-lru. * [NOD-1566] Fix object reuse issues in store Get functions. * [NOD-1566] Add caching to blockRelationStore. * [NOD-1566] Add caching to blockStatusStore. * [NOD-1566] Add caching to ghostdagDataStore. * [NOD-1566] Add caching to multisetStore. * [NOD-1566] Add caching to reachabilityDataStore. * [NOD-1566] Add caching to utxoDiffStore. * [NOD-1566] Add caching to reachabilityReindexRoot. * [NOD-1566] Add caching to pruningStore. * [NOD-1566] Add caching to headerTipsStore. * [NOD-1566] Add caching to consensusStateStore. * [NOD-1566] Add comments explaining why we don't discard staging at the normal location in consensusStateStore. * [NOD-1566] Make go vet happy. * [NOD-1566] Fix merge errors. * [NOD-1566] Add a missing break statement. * [NOD-1566] Run go mod tidy. * [NOD-1566] Remove serializedUTXOSetCache.
118 lines
3.2 KiB
Go
118 lines
3.2 KiB
Go
package multisetstore
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import (
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"github.com/golang/protobuf/proto"
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"github.com/kaspanet/kaspad/domain/consensus/database/serialization"
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"github.com/kaspanet/kaspad/domain/consensus/model"
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"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
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"github.com/kaspanet/kaspad/domain/consensus/utils/dbkeys"
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"github.com/kaspanet/kaspad/domain/consensus/utils/lrucache"
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)
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var bucket = dbkeys.MakeBucket([]byte("multisets"))
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// multisetStore represents a store of Multisets
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type multisetStore struct {
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staging map[externalapi.DomainHash]model.Multiset
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toDelete map[externalapi.DomainHash]struct{}
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cache *lrucache.LRUCache
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}
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// New instantiates a new MultisetStore
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func New(cacheSize int) model.MultisetStore {
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return &multisetStore{
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staging: make(map[externalapi.DomainHash]model.Multiset),
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toDelete: make(map[externalapi.DomainHash]struct{}),
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cache: lrucache.New(cacheSize),
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}
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}
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// Stage stages the given multiset for the given blockHash
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func (ms *multisetStore) Stage(blockHash *externalapi.DomainHash, multiset model.Multiset) {
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ms.staging[*blockHash] = multiset.Clone()
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}
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func (ms *multisetStore) IsStaged() bool {
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return len(ms.staging) != 0 || len(ms.toDelete) != 0
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}
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func (ms *multisetStore) Discard() {
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ms.staging = make(map[externalapi.DomainHash]model.Multiset)
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ms.toDelete = make(map[externalapi.DomainHash]struct{})
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}
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func (ms *multisetStore) Commit(dbTx model.DBTransaction) error {
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for hash, multiset := range ms.staging {
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multisetBytes, err := ms.serializeMultiset(multiset)
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if err != nil {
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return err
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}
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err = dbTx.Put(ms.hashAsKey(&hash), multisetBytes)
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if err != nil {
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return err
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}
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ms.cache.Add(&hash, multiset)
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}
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for hash := range ms.toDelete {
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err := dbTx.Delete(ms.hashAsKey(&hash))
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if err != nil {
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return err
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}
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ms.cache.Remove(&hash)
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}
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ms.Discard()
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return nil
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}
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// Get gets the multiset associated with the given blockHash
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func (ms *multisetStore) Get(dbContext model.DBReader, blockHash *externalapi.DomainHash) (model.Multiset, error) {
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if multiset, ok := ms.staging[*blockHash]; ok {
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return multiset.Clone(), nil
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}
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if multiset, ok := ms.cache.Get(blockHash); ok {
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return multiset.(model.Multiset).Clone(), nil
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}
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multisetBytes, err := dbContext.Get(ms.hashAsKey(blockHash))
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if err != nil {
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return nil, err
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}
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multiset, err := ms.deserializeMultiset(multisetBytes)
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if err != nil {
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return nil, err
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}
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ms.cache.Add(blockHash, multiset)
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return multiset.Clone(), nil
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}
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// Delete deletes the multiset associated with the given blockHash
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func (ms *multisetStore) Delete(blockHash *externalapi.DomainHash) {
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if _, ok := ms.staging[*blockHash]; ok {
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delete(ms.staging, *blockHash)
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return
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}
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ms.toDelete[*blockHash] = struct{}{}
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}
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func (ms *multisetStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {
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return bucket.Key(hash[:])
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}
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func (ms *multisetStore) serializeMultiset(multiset model.Multiset) ([]byte, error) {
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return proto.Marshal(serialization.MultisetToDBMultiset(multiset))
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}
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func (ms *multisetStore) deserializeMultiset(multisetBytes []byte) (model.Multiset, error) {
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dbMultiset := &serialization.DbMultiset{}
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err := proto.Unmarshal(multisetBytes, dbMultiset)
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if err != nil {
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return nil, err
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}
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return serialization.DBMultisetToMultiset(dbMultiset)
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}
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