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[reward] Add reward Schedule table from spreadsheet (#1929)

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* [reward] Add reward Schedule table from spreadsheet

* [reward][schedule] Make denom a function of time block rather than fixed 12.6 billion

* [reward] Fix latent mistaken because of .UnixNano usage, header uses seconds
pull/1931/head
Edgar Aroutiounian 5 years ago committed by GitHub
parent 74a4dd0906
commit 954c50a561
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 153 additions and 4 deletions
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  1. 147
      consensus/reward/schedule.go
  2. 10
      internal/chain/reward.go

147
consensus/reward/schedule.go
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@ -0,0 +1,147 @@
package reward
import (
"sort"
"time"
"github.com/harmony-one/harmony/internal/utils"
"github.com/harmony-one/harmony/numeric"
)
type pair struct {
ts int64
share numeric.Dec
}
var (
// schedule is the Token Release Schedule of Harmony
releasePlan = map[int64]numeric.Dec{
//2019
mustParse("2019-May-31"): numeric.MustNewDecFromStr("0.2429"),
mustParse("2019-Jun-30"): numeric.MustNewDecFromStr("0.2488"),
mustParse("2019-Jul-31"): numeric.MustNewDecFromStr("0.2547"),
mustParse("2019-Aug-31"): numeric.MustNewDecFromStr("0.2607"),
mustParse("2019-Sep-30"): numeric.MustNewDecFromStr("0.2666"),
mustParse("2019-Oct-31"): numeric.MustNewDecFromStr("0.2726"),
mustParse("2019-Nov-30"): numeric.MustNewDecFromStr("0.3785"),
mustParse("2019-Dec-31"): numeric.MustNewDecFromStr("0.3844"),
// 2020
mustParse("2020-Jan-31"): numeric.MustNewDecFromStr("0.3951"),
mustParse("2020-Feb-29"): numeric.MustNewDecFromStr("0.4047"),
mustParse("2020-Mar-31"): numeric.MustNewDecFromStr("0.4143"),
mustParse("2020-Apr-30"): numeric.MustNewDecFromStr("0.4239"),
mustParse("2020-May-31"): numeric.MustNewDecFromStr("0.5335"),
mustParse("2020-Jun-30"): numeric.MustNewDecFromStr("0.5431"),
mustParse("2020-Jul-31"): numeric.MustNewDecFromStr("0.5527"),
mustParse("2020-Aug-31"): numeric.MustNewDecFromStr("0.5623"),
mustParse("2020-Sep-30"): numeric.MustNewDecFromStr("0.5719"),
mustParse("2020-Oct-31"): numeric.MustNewDecFromStr("0.5815"),
mustParse("2020-Nov-30"): numeric.MustNewDecFromStr("0.6882"),
mustParse("2020-Dec-31"): numeric.MustNewDecFromStr("0.6948"),
// 2021
mustParse("2021-Jan-31"): numeric.MustNewDecFromStr("0.7015"),
mustParse("2021-Feb-28"): numeric.MustNewDecFromStr("0.7082"),
mustParse("2021-Mar-31"): numeric.MustNewDecFromStr("0.7148"),
mustParse("2021-Apr-30"): numeric.MustNewDecFromStr("0.7215"),
mustParse("2021-May-31"): numeric.MustNewDecFromStr("0.7721"),
mustParse("2021-Jun-30"): numeric.MustNewDecFromStr("0.7788"),
mustParse("2021-Jul-31"): numeric.MustNewDecFromStr("0.7855"),
mustParse("2021-Aug-31"): numeric.MustNewDecFromStr("0.7922"),
mustParse("2021-Sep-30"): numeric.MustNewDecFromStr("0.7988"),
mustParse("2021-Oct-31"): numeric.MustNewDecFromStr("0.8055"),
mustParse("2021-Nov-30"): numeric.MustNewDecFromStr("0.8561"),
mustParse("2021-Dec-31"): numeric.MustNewDecFromStr("0.8628"),
// 2022
mustParse("2022-Jan-31"): numeric.MustNewDecFromStr("0.8695"),
mustParse("2022-Feb-28"): numeric.MustNewDecFromStr("0.8761"),
mustParse("2022-Mar-31"): numeric.MustNewDecFromStr("0.8828"),
mustParse("2022-Apr-30"): numeric.MustNewDecFromStr("0.8895"),
mustParse("2022-May-31"): numeric.MustNewDecFromStr("0.8962"),
mustParse("2022-Jun-30"): numeric.MustNewDecFromStr("0.9028"),
mustParse("2022-Jul-31"): numeric.MustNewDecFromStr("0.9095"),
mustParse("2022-Aug-31"): numeric.MustNewDecFromStr("0.9162"),
mustParse("2022-Sep-30"): numeric.MustNewDecFromStr("0.9228"),
mustParse("2022-Oct-31"): numeric.MustNewDecFromStr("0.9295"),
mustParse("2022-Nov-30"): numeric.MustNewDecFromStr("0.9362"),
mustParse("2022-Dec-31"): numeric.MustNewDecFromStr("0.9429"),
// 2023
mustParse("2023-Jan-31"): numeric.MustNewDecFromStr("0.9448"),
mustParse("2023-Feb-28"): numeric.MustNewDecFromStr("0.9468"),
mustParse("2023-Mar-31"): numeric.MustNewDecFromStr("0.9488"),
mustParse("2023-Apr-30"): numeric.MustNewDecFromStr("0.9507"),
mustParse("2023-May-31"): numeric.MustNewDecFromStr("0.9527"),
mustParse("2023-Jun-30"): numeric.MustNewDecFromStr("0.9547"),
mustParse("2023-Jul-31"): numeric.MustNewDecFromStr("0.9567"),
mustParse("2023-Aug-31"): numeric.MustNewDecFromStr("0.9586"),
mustParse("2023-Sep-30"): numeric.MustNewDecFromStr("0.9606"),
mustParse("2023-Oct-31"): numeric.MustNewDecFromStr("0.9626"),
mustParse("2023-Nov-30"): numeric.MustNewDecFromStr("0.9645"),
mustParse("2023-Dec-31"): numeric.MustNewDecFromStr("0.9665"),
// 2024
mustParse("2024-Jan-31"): numeric.MustNewDecFromStr("0.9685"),
mustParse("2024-Feb-29"): numeric.MustNewDecFromStr("0.9704"),
mustParse("2024-Mar-31"): numeric.MustNewDecFromStr("0.9724"),
mustParse("2024-Apr-30"): numeric.MustNewDecFromStr("0.9744"),
mustParse("2024-May-31"): numeric.MustNewDecFromStr("0.9764"),
mustParse("2024-Jun-30"): numeric.MustNewDecFromStr("0.9783"),
mustParse("2024-Jul-31"): numeric.MustNewDecFromStr("0.9803"),
mustParse("2024-Aug-31"): numeric.MustNewDecFromStr("0.9823"),
mustParse("2024-Sep-30"): numeric.MustNewDecFromStr("0.9842"),
mustParse("2024-Oct-31"): numeric.MustNewDecFromStr("0.9862"),
mustParse("2024-Nov-30"): numeric.MustNewDecFromStr("0.9882"),
mustParse("2024-Dec-31"): numeric.MustNewDecFromStr("0.9901"),
// 2025
mustParse("2025-Jan-31"): numeric.MustNewDecFromStr("0.9921"),
mustParse("2025-Feb-28"): numeric.MustNewDecFromStr("0.9941"),
mustParse("2025-Mar-31"): numeric.MustNewDecFromStr("0.9961"),
mustParse("2025-Apr-30"): numeric.MustNewDecFromStr("0.9980"),
mustParse("2025-May-30"): numeric.MustNewDecFromStr("1.0000"),
}
sorted = func() []pair {
s := []pair{}
for k, v := range releasePlan {
s = append(s, pair{k, v})
}
sort.SliceStable(
s,
func(i, j int) bool { return s[i].ts < s[j].ts },
)
return s
}()
)
func mustParse(ts string) int64 {
const shortForm = "2006-Jan-02"
t, err := time.Parse(shortForm, ts)
if err != nil {
panic("could not parse timestamp")
}
return t.Unix()
}
// PercentageForTimeStamp ..
func PercentageForTimeStamp(ts int64) numeric.Dec {
bucket := pair{}
i, j := 0, 1
for range sorted {
if i == len(sorted) {
bucket = sorted[i-1]
break
}
if ts >= sorted[i].ts && ts < sorted[j].ts {
bucket = sorted[i]
break
}
i++
j++
}
utils.Logger().Info().
Str("percent of total-supply used", bucket.share.Mul(numeric.NewDec(100)).String()).
Str("for-time", time.Unix(ts, 0).String()).
Msg("Picked Percentage for timestamp")
return bucket.share
}

10
internal/chain/reward.go
Unescape View File

@ -131,6 +131,7 @@ func ballotResultBeaconchain(
func whatPercentStakedNow(
beaconchain engine.ChainReader,
timestamp int64,
) (*numeric.Dec, error) {
stakedNow := numeric.ZeroDec()
// Only active validators' stake is counted in stake ratio because only their stake is under slashing risk
@ -154,8 +155,9 @@ func whatPercentStakedNow(
numeric.NewDecFromBigInt(wrapper.TotalDelegation()),
)
}
percentage := stakedNow.Quo(totalTokens.Add(
percentage := stakedNow.Quo(totalTokens.Mul(
reward.PercentageForTimeStamp(timestamp),
).Add(
numeric.NewDecFromBigInt(soFarDoledOut)),
)
return &percentage, nil
@ -169,8 +171,8 @@ func AccumulateRewards(
rewarder reward.Distributor, slasher slash.Slasher,
beaconChain engine.ChainReader,
) error {
blockNum := header.Number().Uint64()
if blockNum == 0 {
// genesis block has no parent to reward.
return nil
@ -188,7 +190,7 @@ func AccumulateRewards(
defaultReward := BaseStakedReward
// TODO Use cached result in off-chain db instead of full computation
percentageStaked, err := whatPercentStakedNow(beaconChain)
percentageStaked, err := whatPercentStakedNow(beaconChain, header.Time().Int64())
if err != nil {
return err
}

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