frostfs-node/pkg/innerring/processors/settlement/basic/collect.go

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package basic
import (
"math/big"
"github.com/nspcc-dev/neofs-node/pkg/innerring/processors/settlement/common"
"github.com/nspcc-dev/neofs-node/pkg/morph/client/container/wrapper"
"go.uber.org/zap"
)
var (
bigGB = big.NewInt(1 << 30)
bigZero = big.NewInt(0)
bigOne = big.NewInt(1)
)
func (inc *IncomeSettlementContext) Collect() {
inc.mu.Lock()
defer inc.mu.Unlock()
// todo: save state of bank wallet
cachedRate, err := inc.rate.BasicRate()
if err != nil {
inc.log.Error("can't get basic income rate",
zap.String("error", err.Error()))
return
}
cnrEstimations, err := inc.estimations.Estimations(inc.epoch)
if err != nil {
inc.log.Error("can't fetch container size estimations",
zap.Uint64("epoch", inc.epoch))
return
}
for i := range cnrEstimations {
owner, err := inc.container.ContainerInfo(cnrEstimations[i].ContainerID)
if err != nil {
inc.log.Warn("can't fetch container info",
zap.Uint64("epoch", inc.epoch),
zap.Stringer("container_id", cnrEstimations[i].ContainerID))
continue
}
cnrNodes, err := inc.placement.ContainerNodes(inc.epoch, cnrEstimations[i].ContainerID)
if err != nil {
inc.log.Debug("can't fetch container info",
zap.Uint64("epoch", inc.epoch),
zap.Stringer("container_id", cnrEstimations[i].ContainerID))
continue
}
avg := inc.avgEstimation(cnrEstimations[i]) // average container size per node
total := calculateBasicSum(avg, cachedRate, len(cnrNodes))
inc.txTable.Transfer(&common.TransferTx{
From: owner.Owner(),
To: inc.bankOwner,
Amount: total,
})
}
common.TransferAssets(inc.exchange, inc.txTable)
}
// avgEstimation returns estimation value for single container. Right now it
// simply calculates average of all announcements, however it can be smarter and
// base result on reputation of announcers and clever math.
func (inc *IncomeSettlementContext) avgEstimation(e *wrapper.Estimations) (avg uint64) {
if len(e.Values) == 0 {
return 0
}
for i := range e.Values {
avg += e.Values[i].Size
}
return avg / uint64(len(e.Values))
}
func calculateBasicSum(size, rate uint64, ln int) *big.Int {
bigRate := big.NewInt(int64(rate))
total := size * uint64(ln)
price := new(big.Int).SetUint64(total)
price.Mul(price, bigRate)
price.Div(price, bigGB)
if price.Cmp(bigZero) == 0 {
price.Add(price, bigOne)
}
return price
}