0g-chain/x/community/keeper/disable_inflation.go

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package keeper
import (
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/kava-labs/kava/x/community/types"
)
// CheckAndDisableMintAndKavaDistInflation compares the disable inflation time and block time,
// and disables inflation if time is set and before block time. Inflation time is reset,
// so this method is safe to call more than once.
func (k Keeper) CheckAndDisableMintAndKavaDistInflation(ctx sdk.Context) {
// panic if params are not found since this can only be reached if chain state is corrupted or method is ran at an invalid height
params := k.mustGetParams(ctx)
// if disable inflation time is in the future or zero there is nothing to do, so return
if params.UpgradeTimeDisableInflation.IsZero() || params.UpgradeTimeDisableInflation.After(ctx.BlockTime()) {
return
}
// run disable inflation logic
k.disableInflation(ctx)
ctx.EventManager().EmitEvent(
sdk.NewEvent(
types.EventTypeInflationStop,
),
)
// reset disable inflation time to ensure next call is a no-op
params.UpgradeTimeDisableInflation = time.Time{}
// set staking rewards to provided intial value
params.StakingRewardsPerSecond = params.UpgradeTimeSetStakingRewardsPerSecond
k.SetParams(ctx, params)
if err := k.StartCommunityFundConsolidation(ctx); err != nil {
panic(err)
}
}
// TODO: double check this is correct method for disabling inflation in kavadist without
// affecting rewards. In addition, inflation periods in kavadist should be removed.
func (k Keeper) disableInflation(ctx sdk.Context) {
logger := k.Logger(ctx)
logger.Info("disable inflation upgrade started")
// set x/min inflation to 0
mintParams := k.mintKeeper.GetParams(ctx)
mintParams.InflationMin = sdk.ZeroDec()
mintParams.InflationMax = sdk.ZeroDec()
k.mintKeeper.SetParams(ctx, mintParams)
logger.Info("x/mint inflation set to 0")
// disable kavadist inflation
kavadistParams := k.kavadistKeeper.GetParams(ctx)
kavadistParams.Active = false
k.kavadistKeeper.SetParams(ctx, kavadistParams)
logger.Info("x/kavadist inflation disabled")
logger.Info("disable inflation upgrade finished successfully!")
}