Ori Newman 7402f3fb0e
[NOD-1492] Implement some data stores (#978)
* [NOD-1492] Implement some data stores

* [NOD-1492] Remove pointers to acceptance data

* [NOD-1492] Fix receiver names

* [NOD-1492] Implement delete for acceptanceDataStore

* [NOD-1492] In blockRelationStore rename IsAnythingStaged to IsStaged

* [NOD-1492] Rename bucket name
2020-10-28 16:30:55 +02:00

82 lines
2.4 KiB
Go

package acceptancedatastore
import (
"github.com/kaspanet/kaspad/domain/consensus/model"
"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
"github.com/kaspanet/kaspad/domain/consensus/utils/dbkeys"
)
var bucket = dbkeys.MakeBucket([]byte("acceptance-data"))
// acceptanceDataStore represents a store of AcceptanceData
type acceptanceDataStore struct {
staging map[externalapi.DomainHash]model.AcceptanceData
}
// New instantiates a new AcceptanceDataStore
func New() model.AcceptanceDataStore {
return &acceptanceDataStore{
staging: make(map[externalapi.DomainHash]model.AcceptanceData),
}
}
// Stage stages the given acceptanceData for the given blockHash
func (ads *acceptanceDataStore) Stage(blockHash *externalapi.DomainHash, acceptanceData model.AcceptanceData) {
ads.staging[*blockHash] = acceptanceData
}
func (ads *acceptanceDataStore) IsStaged() bool {
return len(ads.staging) != 0
}
func (ads *acceptanceDataStore) Discard() {
ads.staging = make(map[externalapi.DomainHash]model.AcceptanceData)
}
func (ads *acceptanceDataStore) Commit(dbTx model.DBTransaction) error {
for hash, acceptanceData := range ads.staging {
err := dbTx.Put(ads.hashAsKey(&hash), ads.serializeAcceptanceData(acceptanceData))
if err != nil {
return err
}
}
ads.Discard()
return nil
}
// Get gets the acceptanceData associated with the given blockHash
func (ads *acceptanceDataStore) Get(dbContext model.DBReader, blockHash *externalapi.DomainHash) (model.AcceptanceData, error) {
if acceptanceData, ok := ads.staging[*blockHash]; ok {
return acceptanceData, nil
}
acceptanceDataBytes, err := dbContext.Get(ads.hashAsKey(blockHash))
if err != nil {
return nil, err
}
return ads.deserializeAcceptanceData(acceptanceDataBytes)
}
// Delete deletes the acceptanceData associated with the given blockHash
func (ads *acceptanceDataStore) Delete(dbTx model.DBTransaction, blockHash *externalapi.DomainHash) error {
if _, ok := ads.staging[*blockHash]; ok {
delete(ads.staging, *blockHash)
return nil
}
return dbTx.Delete(ads.hashAsKey(blockHash))
}
func (ads *acceptanceDataStore) serializeAcceptanceData(acceptanceData model.AcceptanceData) []byte {
panic("implement me")
}
func (ads *acceptanceDataStore) deserializeAcceptanceData(acceptanceDataBytes []byte) (model.AcceptanceData, error) {
panic("implement me")
}
func (ads *acceptanceDataStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {
return bucket.Key(hash[:])
}