mirror of
				https://github.com/0glabs/0g-chain.git
				synced 2025-11-04 00:27:41 +00:00 
			
		
		
		
	
		
			
				
	
	
		
			79 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			79 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
package keeper
 | 
						|
 | 
						|
import (
 | 
						|
	"time"
 | 
						|
 | 
						|
	errorsmod "cosmossdk.io/errors"
 | 
						|
	sdk "github.com/cosmos/cosmos-sdk/types"
 | 
						|
 | 
						|
	"github.com/0glabs/0g-chain/x/issuance/types"
 | 
						|
)
 | 
						|
 | 
						|
// CreateNewAssetSupply creates a new AssetSupply in the store for the input denom
 | 
						|
func (k Keeper) CreateNewAssetSupply(ctx sdk.Context, denom string) types.AssetSupply {
 | 
						|
	supply := types.NewAssetSupply(
 | 
						|
		sdk.NewCoin(denom, sdk.ZeroInt()), time.Duration(0))
 | 
						|
	k.SetAssetSupply(ctx, supply, denom)
 | 
						|
	return supply
 | 
						|
}
 | 
						|
 | 
						|
// IncrementCurrentAssetSupply increments an asset's supply by the coin
 | 
						|
func (k Keeper) IncrementCurrentAssetSupply(ctx sdk.Context, coin sdk.Coin) error {
 | 
						|
	supply, found := k.GetAssetSupply(ctx, coin.Denom)
 | 
						|
	if !found {
 | 
						|
		return errorsmod.Wrap(types.ErrAssetNotFound, coin.Denom)
 | 
						|
	}
 | 
						|
 | 
						|
	limit, err := k.GetRateLimit(ctx, coin.Denom)
 | 
						|
	if err != nil {
 | 
						|
		return err
 | 
						|
	}
 | 
						|
 | 
						|
	if limit.Active {
 | 
						|
		supplyLimit := sdk.NewCoin(coin.Denom, limit.Limit)
 | 
						|
		// Resulting current supply must be under asset's limit
 | 
						|
		if supplyLimit.IsLT(supply.CurrentSupply.Add(coin)) {
 | 
						|
			return errorsmod.Wrapf(types.ErrExceedsSupplyLimit, "increase %s, asset supply %s, limit %s", coin, supply.CurrentSupply, supplyLimit)
 | 
						|
		}
 | 
						|
		supply.CurrentSupply = supply.CurrentSupply.Add(coin)
 | 
						|
		k.SetAssetSupply(ctx, supply, coin.Denom)
 | 
						|
	}
 | 
						|
	return nil
 | 
						|
}
 | 
						|
 | 
						|
// UpdateTimeBasedSupplyLimits updates the time based supply for each asset, resetting it if the current time window has elapsed.
 | 
						|
func (k Keeper) UpdateTimeBasedSupplyLimits(ctx sdk.Context) {
 | 
						|
	params := k.GetParams(ctx)
 | 
						|
	previousBlockTime, found := k.GetPreviousBlockTime(ctx)
 | 
						|
	if !found {
 | 
						|
		previousBlockTime = ctx.BlockTime()
 | 
						|
		k.SetPreviousBlockTime(ctx, previousBlockTime)
 | 
						|
	}
 | 
						|
	timeElapsed := ctx.BlockTime().Sub(previousBlockTime)
 | 
						|
	for _, asset := range params.Assets {
 | 
						|
		supply, found := k.GetAssetSupply(ctx, asset.Denom)
 | 
						|
		// if a new asset has been added by governance, create a new asset supply for it in the store
 | 
						|
		if !found {
 | 
						|
			supply = k.CreateNewAssetSupply(ctx, asset.Denom)
 | 
						|
		}
 | 
						|
		if !asset.RateLimit.Active {
 | 
						|
			// rate limiting is not active, reset supply
 | 
						|
			supply.CurrentSupply = sdk.NewCoin(asset.Denom, sdk.ZeroInt())
 | 
						|
			supply.TimeElapsed = time.Duration(0)
 | 
						|
			k.SetAssetSupply(ctx, supply, asset.Denom)
 | 
						|
			continue
 | 
						|
		}
 | 
						|
		if asset.RateLimit.TimePeriod > supply.TimeElapsed+timeElapsed {
 | 
						|
			// rate limiting is active, the rate-limiting period has not expired
 | 
						|
			supply.TimeElapsed = supply.TimeElapsed + timeElapsed
 | 
						|
			k.SetAssetSupply(ctx, supply, asset.Denom)
 | 
						|
			continue
 | 
						|
		}
 | 
						|
		// rate limiting is active, the rate-limiting period has expired, and is now reset
 | 
						|
		supply.TimeElapsed = time.Duration(0)
 | 
						|
		supply.CurrentSupply = sdk.NewCoin(asset.Denom, sdk.ZeroInt())
 | 
						|
		k.SetAssetSupply(ctx, supply, asset.Denom)
 | 
						|
	}
 | 
						|
	k.SetPreviousBlockTime(ctx, ctx.BlockTime())
 | 
						|
}
 |