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core: cache NEP5Transfers in cached DAO

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This commit is contained in:
Evgenii Stratonikov 2020-03-12 14:49:59 +03:00
parent 6fa2a998f4
commit ac475940a0
1 changed files with 43 additions and 1 deletions
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44
pkg/core/cacheddao.go
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@ -15,6 +15,7 @@ type cachedDao struct {
contracts map[util.Uint160]*state.Contract
unspents map[util.Uint256]*state.UnspentCoin
balances map[util.Uint160]*state.NEP5Balances
transfers map[util.Uint160]map[uint32]*state.NEP5TransferLog
}
// newCachedDao returns new cachedDao wrapping around given backing store.
@ -23,7 +24,8 @@ func newCachedDao(backend storage.Store) *cachedDao {
ctrs := make(map[util.Uint160]*state.Contract)
unspents := make(map[util.Uint256]*state.UnspentCoin)
balances := make(map[util.Uint160]*state.NEP5Balances)
return &cachedDao{*newDao(backend), accs, ctrs, unspents, balances}
transfers := make(map[util.Uint160]map[uint32]*state.NEP5TransferLog)
return &cachedDao{*newDao(backend), accs, ctrs, unspents, balances, transfers}
}
// GetAccountStateOrNew retrieves Account from cache or underlying Store
@ -101,6 +103,38 @@ func (cd *cachedDao) PutNEP5Balances(acc util.Uint160, bs *state.NEP5Balances) e
return nil
}
// GetNEP5TransferLog retrieves NEP5TransferLog for the acc.
func (cd *cachedDao) GetNEP5TransferLog(acc util.Uint160, index uint32) (*state.NEP5TransferLog, error) {
ts := cd.transfers[acc]
if ts != nil && ts[index] != nil {
return ts[index], nil
}
return cd.dao.GetNEP5TransferLog(acc, index)
}
// PutNEP5TransferLog saves NEP5TransferLog for the acc.
func (cd *cachedDao) PutNEP5TransferLog(acc util.Uint160, index uint32, bs *state.NEP5TransferLog) error {
ts := cd.transfers[acc]
if ts == nil {
ts = make(map[uint32]*state.NEP5TransferLog, 2)
cd.transfers[acc] = ts
}
ts[index] = bs
return nil
}
// AppendNEP5Transfer appends new transfer to a transfer event log.
func (cd *cachedDao) AppendNEP5Transfer(acc util.Uint160, index uint32, tr *state.NEP5Transfer) (bool, error) {
lg, err := cd.GetNEP5TransferLog(acc, index)
if err != nil {
return false, err
}
if err := lg.Append(tr); err != nil {
return false, err
}
return lg.Size() >= nep5TransferBatchSize, cd.PutNEP5TransferLog(acc, index, lg)
}
// Persist flushes all the changes made into the (supposedly) persistent
// underlying store.
func (cd *cachedDao) Persist() (int, error) {
@ -122,5 +156,13 @@ func (cd *cachedDao) Persist() (int, error) {
return 0, err
}
}
for acc, ts := range cd.transfers {
for ind, lg := range ts {
err := cd.dao.PutNEP5TransferLog(acc, ind, lg)
if err != nil {
return 0, err
}
}
}
return cd.dao.Persist()
}