-
Notifications
You must be signed in to change notification settings - Fork 0
/
epoch.go
135 lines (117 loc) · 4.88 KB
/
epoch.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
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
package keeper
import (
"errors"
sdk "github.com/cosmos/cosmos-sdk/types"
distributiontypes "github.com/cosmos/cosmos-sdk/x/distribution/types"
"github.com/merlinslair/merlin/osmoutils"
gammtypes "github.com/merlinslair/merlin/x/gamm/types"
incentivestypes "github.com/merlinslair/merlin/x/incentives/types"
lockuptypes "github.com/merlinslair/merlin/x/lockup/types"
"github.com/merlinslair/merlin/x/superfluid/types"
)
func (k Keeper) AfterEpochEnd(ctx sdk.Context, epochIdentifier string, _ int64) error {
return nil
}
func (k Keeper) AfterEpochStartBeginBlock(ctx sdk.Context) {
// cref [#830](https://github.com/merlinslair/merlin/issues/830),
// the supplied epoch number is wrong at time of commit. hence we get from the info.
curEpoch := k.ek.GetEpochInfo(ctx, k.GetEpochIdentifier(ctx)).CurrentEpoch
// Move delegation rewards to perpetual gauge
ctx.Logger().Info("Move delegation rewards to gauges")
k.MoveSuperfluidDelegationRewardToGauges(ctx)
ctx.Logger().Info("Distribute Superfluid gauges")
k.distributeSuperfluidGauges(ctx)
// Update all LP tokens multipliers for the upcoming epoch.
// This affects staking reward distribution until the next epochs rewards.
// Exclusive of current epoch's rewards, inclusive of next epoch's rewards.
ctx.Logger().Info("Update all mer equivalency multipliers")
for _, asset := range k.GetAllSuperfluidAssets(ctx) {
err := k.UpdateMerEquivalentMultipliers(ctx, asset, curEpoch)
if err != nil {
// TODO: Revisit what we do here. (halt all distr, only skip this asset)
// Since at MVP of feature, we only have one pool of superfluid staking,
// we can punt this question.
// each of the errors feels like significant misconfig
return
}
}
// Refresh intermediary accounts' delegation amounts,
// making staking rewards follow the updated multiplier numbers.
ctx.Logger().Info("Refresh all superfluid delegation amounts")
k.RefreshIntermediaryDelegationAmounts(ctx)
}
func (k Keeper) MoveSuperfluidDelegationRewardToGauges(ctx sdk.Context) {
accs := k.GetAllIntermediaryAccounts(ctx)
for _, acc := range accs {
addr := acc.GetAccAddress()
valAddr, err := sdk.ValAddressFromBech32(acc.ValAddr)
if err != nil {
panic(err)
}
// To avoid unexpected issues on WithdrawDelegationRewards and AddToGaugeRewards
// we use cacheCtx and apply the changes later
_ = osmoutils.ApplyFuncIfNoError(ctx, func(cacheCtx sdk.Context) error {
_, err := k.ck.WithdrawDelegationRewards(cacheCtx, addr, valAddr)
if errors.Is(err, distributiontypes.ErrEmptyDelegationDistInfo) {
ctx.Logger().Debug("no swaps occurred in this pool between last epoch and this epoch")
return nil
}
return err
})
// Send delegation rewards to gauges
_ = osmoutils.ApplyFuncIfNoError(ctx, func(cacheCtx sdk.Context) error {
// Note! We only send the bond denom (mer), to avoid attack vectors where people
// send many different denoms to the intermediary account, and make a resource exhaustion attack on end block.
bondDenom := k.sk.BondDenom(cacheCtx)
balance := k.bk.GetBalance(cacheCtx, addr, bondDenom)
if balance.IsZero() {
return nil
}
return k.ik.AddToGaugeRewards(cacheCtx, addr, sdk.Coins{balance}, acc.GaugeId)
})
}
}
func (k Keeper) distributeSuperfluidGauges(ctx sdk.Context) {
gauges := k.ik.GetActiveGauges(ctx)
// only distribute to active gauges that are for perpetual synthetic denoms
distrGauges := []incentivestypes.Gauge{}
for _, gauge := range gauges {
isSynthetic := lockuptypes.IsSyntheticDenom(gauge.DistributeTo.Denom)
if isSynthetic && gauge.IsPerpetual {
distrGauges = append(distrGauges, gauge)
}
}
_, err := k.ik.Distribute(ctx, distrGauges)
if err != nil {
panic(err)
}
}
func (k Keeper) UpdateMerEquivalentMultipliers(ctx sdk.Context, asset types.SuperfluidAsset, newEpochNumber int64) error {
if asset.AssetType == types.SuperfluidAssetTypeLPShare {
// LP_token_Mer_equivalent = OSMO_amount_on_pool / LP_token_supply
poolId := gammtypes.MustGetPoolIdFromShareDenom(asset.Denom)
pool, err := k.gk.GetPoolAndPoke(ctx, poolId)
if err != nil {
// Pool has been unexpectedly deleted
k.Logger(ctx).Error(err.Error())
k.BeginUnwindSuperfluidAsset(ctx, 0, asset)
return err
}
// get OSMO amount
bondDenom := k.sk.BondDenom(ctx)
merPoolAsset := pool.GetTotalPoolLiquidity(ctx).AmountOf(bondDenom)
if merPoolAsset.IsZero() {
// Pool has unexpectedly removed Mer from its assets.
k.Logger(ctx).Error(err.Error())
k.BeginUnwindSuperfluidAsset(ctx, 0, asset)
return err
}
multiplier := k.calculateMerBackingPerShare(pool, merPoolAsset)
k.SetMerEquivalentMultiplier(ctx, newEpochNumber, asset.Denom, multiplier)
} else if asset.AssetType == types.SuperfluidAssetTypeNative {
// TODO: Consider deleting superfluid asset type native
k.Logger(ctx).Error("unsupported superfluid asset type")
return errors.New("SuperfluidAssetTypeNative is unsupported")
}
return nil
}