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add new token emission implementation
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| package mint | ||
|
|
||
| import ( | ||
| "time" | ||
|
|
||
| "github.com/cosmos/cosmos-sdk/telemetry" | ||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| mk "github.com/cosmos/cosmos-sdk/x/mint/keeper" | ||
| "github.com/cosmos/cosmos-sdk/x/mint/types" | ||
| "github.com/umee-network/umee/v5/util" | ||
| ugov "github.com/umee-network/umee/v5/x/ugov" | ||
| ugovkeeper "github.com/umee-network/umee/v5/x/ugov/keeper" | ||
| ) | ||
|
|
||
| // BeginBlock implements BeginBlock for the x/mint module. | ||
| func BeginBlock(ctx sdk.Context, ugovKeeper ugovkeeper.Keeper, mintKeeper mk.Keeper) { | ||
| defer telemetry.ModuleMeasureSince(types.ModuleName, time.Now(), telemetry.MetricKeyBeginBlocker) | ||
| // liquidation params | ||
| lp := ugovKeeper.LiquidationParams() | ||
|
Check warning Code scanning / CodeQL Panic in BeginBock or EndBlock consensus methods Warning |
||
| // mint module params | ||
| mintParams := mintKeeper.GetParams(ctx) | ||
|
|
||
| totalStakingSupply := mintKeeper.StakingTokenSupply(ctx) | ||
| if totalStakingSupply.GTE(lp.MaxSupply.Amount) { | ||
| // supply is already reached the maximum amount, so no more minting the staking token | ||
| return | ||
| } | ||
|
|
||
| // fetch stored minter & params | ||
| minter := mintKeeper.GetMinter(ctx) | ||
| bondedRatio := mintKeeper.BondedRatio(ctx) | ||
| // recalculate inflation rate | ||
| minter.Inflation = InflationCalculationFn(ctx, ugovKeeper, mintKeeper, lp, mintParams, bondedRatio, minter.Inflation) | ||
|
Check warning Code scanning / CodeQL Panic in BeginBock or EndBlock consensus methods Warning |
||
| minter.AnnualProvisions = minter.NextAnnualProvisions(mintParams, totalStakingSupply) | ||
| mintKeeper.SetMinter(ctx, minter) | ||
|
|
||
| // mint coins, update supply | ||
| mintedCoin := minter.BlockProvision(mintParams) | ||
| mintedCoins := sdk.NewCoins(mintedCoin) | ||
|
|
||
| err := mintKeeper.MintCoins(ctx, mintedCoins) | ||
| util.Panic(err) | ||
|
Check warning Code scanning / CodeQL Panic in BeginBock or EndBlock consensus methods Warning |
||
|
|
||
| // send the minted coins to the fee collector account | ||
| err = mintKeeper.AddCollectedFees(ctx, mintedCoins) | ||
| util.Panic(err) | ||
|
Check warning Code scanning / CodeQL Panic in BeginBock or EndBlock consensus methods Warning |
||
|
|
||
| if mintedCoin.Amount.IsInt64() { | ||
| defer telemetry.ModuleSetGauge(types.ModuleName, float32(mintedCoin.Amount.Int64()), "minted_tokens") | ||
| } | ||
|
|
||
| ctx.EventManager().EmitEvent( | ||
| sdk.NewEvent( | ||
| types.EventTypeMint, | ||
| sdk.NewAttribute(types.AttributeKeyBondedRatio, bondedRatio.String()), | ||
| sdk.NewAttribute(types.AttributeKeyInflation, minter.Inflation.String()), | ||
| sdk.NewAttribute(types.AttributeKeyAnnualProvisions, minter.AnnualProvisions.String()), | ||
| sdk.NewAttribute(sdk.AttributeKeyAmount, mintedCoin.Amount.String()), | ||
| ), | ||
| ) | ||
| } | ||
|
|
||
| func InflationCalculationFn(ctx sdk.Context, ugovKeeper ugovkeeper.Keeper, mintKeeper mk.Keeper, | ||
| lp ugov.LiquidationParams, params types.Params, bondedRatio sdk.Dec, currentInflation sdk.Dec) sdk.Dec { | ||
|
|
||
| // inflation cycle is completed , so we need to update the inflation max and min rate | ||
| icst, err := ugovKeeper.GetInflationCycleStartTime() | ||
| util.Panic(err) | ||
|
|
||
| // TODO: needs to verify when to update this cycle time like in migrations or in this BeginBlock ? | ||
| // first time start time is zero | ||
| if !icst.IsZero() && ctx.BlockTime().After(icst.Add(lp.InflationCycleDuration)) { | ||
| params.InflationMax = params.InflationMax.Mul(sdk.OneDec().Sub(lp.InflationReductionRate)) | ||
| params.InflationMin = params.InflationMin.Mul(sdk.OneDec().Sub(lp.InflationReductionRate)) | ||
|
|
||
| // update the changed inflation min and max rates | ||
| mintKeeper.SetParams(ctx, params) | ||
|
|
||
| // update the executed time of inflation cycle | ||
| err := ugovKeeper.SetInflationCycleStartTime(ctx.BlockTime()) | ||
| util.Panic(err) | ||
| ctx.Logger().Info("inflation rates are updated", | ||
| "inflation_max", params.InflationMax, "inflation_min", params.InflationMin, | ||
| "inflation_cycle_start_time", ctx.BlockTime().String(), | ||
| ) | ||
| } | ||
|
|
||
| // 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 := currentInflation.Add(inflationRateChange) // note inflationRateChange may be negative | ||
| if inflation.GT(params.InflationMax) { | ||
| inflation = params.InflationMax | ||
| } | ||
| if inflation.LT(params.InflationMin) { | ||
| inflation = params.InflationMin | ||
| } | ||
|
|
||
| return inflation | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| package mint | ||
|
|
||
| import ( | ||
| "github.com/cosmos/cosmos-sdk/codec" | ||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| "github.com/cosmos/cosmos-sdk/types/module" | ||
| "github.com/cosmos/cosmos-sdk/x/mint" | ||
| mk "github.com/cosmos/cosmos-sdk/x/mint/keeper" | ||
| "github.com/cosmos/cosmos-sdk/x/mint/types" | ||
| abci "github.com/tendermint/tendermint/abci/types" | ||
|
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| ugovkeeper "github.com/umee-network/umee/v5/x/ugov/keeper" | ||
| ) | ||
|
|
||
| var ( | ||
| _ module.AppModule = AppModule{} | ||
| ) | ||
|
|
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| type AppModule struct { | ||
| mint.AppModule | ||
| mintKeeper mk.Keeper | ||
| ugovKB ugovkeeper.Builder | ||
| } | ||
|
|
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| func NewAppModule(cdc codec.Codec, keeper mk.Keeper, ak types.AccountKeeper, ugovkb ugovkeeper.Builder, | ||
| ) AppModule { | ||
| return AppModule{ | ||
| AppModule: mint.NewAppModule(cdc, keeper, ak, nil), | ||
| mintKeeper: keeper, | ||
| ugovKB: ugovkb, | ||
| } | ||
| } | ||
|
|
||
| // Name implements module.AppModule. | ||
| func (AppModule) Name() string { | ||
| return types.ModuleName | ||
| } | ||
|
|
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| // BeginBlock executes all ABCI BeginBlock logic respective to the x/uibc module. | ||
| func (am AppModule) BeginBlock(ctx sdk.Context, _ abci.RequestBeginBlock) { | ||
| BeginBlock(ctx, am.ugovKB.Keeper(&ctx), am.mintKeeper) | ||
|
Check warning Code scanning / CodeQL Panic in BeginBock or EndBlock consensus methods Warning |
||
| } | ||
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