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Merge pull request #25 from Solovyov1796/custom_inflation_calculation

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custom inflation calculation function
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0xsatoshi 2024-06-10 16:55:02 +08:00 committed by GitHub
commit 35a9c8376e
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2 changed files with 49 additions and 1 deletions
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2
app/app.go
View File

@ -588,7 +588,7 @@ func NewApp(
committee.NewAppModule(app.committeeKeeper, app.accountKeeper),
evmutil.NewAppModule(app.evmutilKeeper, app.bankKeeper, app.accountKeeper),
// nil InflationCalculationFn, use SDK's default inflation function
mint.NewAppModule(appCodec, app.mintKeeper, app.accountKeeper, nil),
mint.NewAppModule(appCodec, app.mintKeeper, app.accountKeeper, chaincfg.CustomInflationCalculateFn),
council.NewAppModule(app.CouncilKeeper, app.stakingKeeper),
das.NewAppModule(app.DasKeeper),
)

48
chaincfg/mint.go Normal file
View File

@ -0,0 +1,48 @@
package chaincfg
import (
"github.com/tendermint/tendermint/libs/log"
sdk "github.com/cosmos/cosmos-sdk/types"
minttypes "github.com/cosmos/cosmos-sdk/x/mint/types"
)
func CustomInflationCalculateFn(ctx sdk.Context, minter minttypes.Minter, params minttypes.Params, bondedRatio sdk.Dec) sdk.Dec {
logger := ctx.Logger()
if logger == nil {
panic("logger is nil")
}
return customInflationCalculateFn(logger, minter, params, bondedRatio)
}
func customInflationCalculateFn(logger log.Logger, minter minttypes.Minter, params minttypes.Params, bondedRatio sdk.Dec) sdk.Dec {
// The target annual inflation rate is recalculated for each previsions cycle. The
// inflation is also subject to a rate change (positive or negative) depending on
// the distance from the desired ratio (67%). The maximum rate change possible is
// defined to be 13% per year, however the annual inflation is capped as between
// 7% and 20%.
// (1 - bondedRatio/GoalBonded) * InflationRateChange
inflationRateChangePerYear := sdk.OneDec().
Sub(bondedRatio.Quo(params.GoalBonded)).
Mul(params.InflationRateChange)
inflationRateChange := inflationRateChangePerYear.Quo(sdk.NewDec(int64(params.BlocksPerYear)))
// adjust the new annual inflation for this next cycle
inflation := minter.Inflation.Add(inflationRateChange) // note inflationRateChange may be negative
if inflation.GT(params.InflationMax) {
inflation = params.InflationMax
}
if inflation.LT(params.InflationMin) {
inflation = params.InflationMin
}
logger.Info(
"calculated new annual inflation",
"bondedRatio", bondedRatio,
"inflation", inflation,
"params", params,
"minter", minter,
)
return inflation
}