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native: do not update committee every block

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Update frequency depends on committee size and
amount of validators. For mainnet it is 28.
This commit is contained in:
Evgenii Stratonikov 2020-09-22 13:03:34 +03:00
parent 81a11c629a
commit af16519413
2 changed files with 23 additions and 6 deletions
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15
pkg/core/native/native_neo.go
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@ -31,7 +31,8 @@ type NEO struct {
nextValidators atomic.Value
validators atomic.Value
// committee contains cached committee members and
// is updated during block persist. It's value
// is updated once in a while depending on committee size
// (every 28 blocks for mainnet). It's value
// is always equal to value stored by `prefixCommittee`.
committee atomic.Value
}
@ -212,10 +213,18 @@ func (n *NEO) updateCommittee(ic *interop.Context) error {
return ic.DAO.PutStorageItem(n.ContractID, prefixCommittee, si)
}
func shouldUpdateCommittee(h uint32, bc blockchainer.Blockchainer) bool {
cfg := bc.GetConfig()
r := cfg.ValidatorsCount + len(cfg.StandbyCommittee)
return h%uint32(r) == 0
}
// OnPersist implements Contract interface.
func (n *NEO) OnPersist(ic *interop.Context) error {
if err := n.updateCommittee(ic); err != nil {
return err
if shouldUpdateCommittee(ic.Block.Index, ic.Chain) {
if err := n.updateCommittee(ic); err != nil {
return err
}
}
gas, err := n.GetGASPerBlock(ic, ic.Block.Index)