/
mint.go
57 lines (46 loc) · 1.66 KB
/
mint.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
package keeper
import (
"cosmossdk.io/math"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/dymensionxyz/dymension-rdk/x/mint/types"
)
func (k Keeper) HandleMintingEpoch(ctx sdk.Context) (sdk.Coins, error) {
var mintedCoins sdk.Coins
params := k.GetParams(ctx)
// calculate coins
total := k.bankKeeper.GetSupply(ctx, params.MintDenom)
mintAmount := k.CalcMintedCoins(ctx, total.Amount)
if mintAmount.IsZero() {
return mintedCoins, nil
}
// mint coins, update supply
mintedCoins = sdk.NewCoins(sdk.NewCoin(params.MintDenom, mintAmount.TruncateInt()))
err := k.bankKeeper.MintCoins(ctx, types.ModuleName, mintedCoins)
if err != nil {
return mintedCoins, err
}
// send the minted coins to the fee collector account
err = k.DistributeMintedCoin(ctx, mintedCoins)
if err != nil {
return mintedCoins, err
}
return mintedCoins, nil
}
func (k Keeper) CalcMintedCoins(ctx sdk.Context, totalAmt math.Int) sdk.Dec {
params := k.GetParams(ctx)
minter := k.GetMinter(ctx)
epoch, _ := k.epochKeeper.GetEpochInfo(ctx, params.MintEpochIdentifier)
spreadFactor := types.InflationAnnualDuration / epoch.Duration
mintAmount := minter.CurrentInflationRate.MulInt(totalAmt.QuoRaw(int64(spreadFactor)))
return mintAmount
}
// DistributeMintedCoins implements distribution of minted coins from mint to external modules.
func (k Keeper) DistributeMintedCoin(ctx sdk.Context, mintedCoins sdk.Coins) error {
err := k.bankKeeper.SendCoinsFromModuleToModule(ctx, types.ModuleName, k.feeCollectorName, mintedCoins)
if err != nil {
return err
}
// call a hook after the minting and distribution of new coins
k.hooks.AfterDistributeMintedCoin(ctx, mintedCoins)
return nil
}