/
delegate.go
597 lines (524 loc) · 22.4 KB
/
delegate.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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
package keeper
// Delegation allows securing funds for a specific provider to effectively increase
// its stake so it will be paired with consumers more often. The delegators do not
// transfer the funds to the provider but only bestow the funds with it. In return
// to locking the funds there, delegators get some of the provider’s profit (after
// commission deduction).
//
// The delegated funds are stored in the module's BondedPoolName account. On request
// to terminate the delegation, they are then moved to the modules NotBondedPoolName
// account, and remain locked there for staking.UnbondingTime() witholding period
// before finally released back to the delegator. The timers for bonded funds are
// tracked are indexed by the delegator, provider, and chainID.
//
// The delegation state is stores with fixation using two maps: one for delegations
// indexed by the combination <provider,chainD,delegator>, used to track delegations
// and find/access delegations by provider (and chainID); and another for delegators
// tracking the list of providers for a delegator, indexed by the delegator.
import (
"fmt"
"cosmossdk.io/math"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/lavanet/lava/utils"
lavaslices "github.com/lavanet/lava/utils/lavaslices"
"github.com/lavanet/lava/x/dualstaking/types"
epochstoragetypes "github.com/lavanet/lava/x/epochstorage/types"
"golang.org/x/exp/slices"
)
// increaseDelegation increases the delegation of a delegator to a provider for a
// given chain. It updates the fixation stores for both delegations and delegators,
// and updates the (epochstorage) stake-entry.
func (k Keeper) increaseDelegation(ctx sdk.Context, delegator, provider, chainID string, amount sdk.Coin, nextEpoch uint64) error {
// get, update and append the delegation entry
var delegationEntry types.Delegation
index := types.DelegationKey(provider, delegator, chainID)
found := k.delegationFS.FindEntry(ctx, index, nextEpoch, &delegationEntry)
if !found {
// new delegation (i.e. not increase of existing one)
delegationEntry = types.NewDelegation(delegator, provider, chainID, ctx.BlockTime(), k.stakingKeeper.BondDenom(ctx))
}
delegationEntry.AddAmount(amount)
err := k.delegationFS.AppendEntry(ctx, index, nextEpoch, &delegationEntry)
if err != nil {
// append should never fail here
return utils.LavaFormatError("critical: append delegation entry", err,
utils.Attribute{Key: "delegator", Value: delegationEntry.Delegator},
utils.Attribute{Key: "provider", Value: delegationEntry.Provider},
utils.Attribute{Key: "chainID", Value: delegationEntry.ChainID},
)
}
// get, update and append the delegator entry
var delegatorEntry types.Delegator
index = types.DelegatorKey(delegator)
_ = k.delegatorFS.FindEntry(ctx, index, nextEpoch, &delegatorEntry)
contains := delegatorEntry.AddProvider(provider)
if !contains {
err = k.delegatorFS.AppendEntry(ctx, index, nextEpoch, &delegatorEntry)
if err != nil {
// append should never fail here
return utils.LavaFormatError("critical: append delegator entry", err,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: provider},
utils.Attribute{Key: "chainID", Value: chainID},
)
}
}
if provider != types.EMPTY_PROVIDER {
// update the stake entry
return k.modifyStakeEntryDelegation(ctx, delegator, provider, chainID, amount, true)
}
return nil
}
// decreaseDelegation decreases the delegation of a delegator to a provider for a
// given chain. It updates the fixation stores for both delegations and delegators,
// and updates the (epochstorage) stake-entry.
func (k Keeper) decreaseDelegation(ctx sdk.Context, delegator, provider, chainID string, amount sdk.Coin, nextEpoch uint64) error {
// get, update and append the delegation entry
var delegationEntry types.Delegation
index := types.DelegationKey(provider, delegator, chainID)
found := k.delegationFS.FindEntry(ctx, index, nextEpoch, &delegationEntry)
if !found {
return types.ErrDelegationNotFound
}
if delegationEntry.Amount.IsLT(amount) {
return types.ErrInsufficientDelegation
}
delegationEntry.SubAmount(amount)
// if delegation now becomes zero, then remove this entry altogether;
// otherwise just append the new version (for next epoch).
if delegationEntry.Amount.IsZero() {
err := k.delegationFS.DelEntry(ctx, index, nextEpoch)
if err != nil {
// delete should never fail here
return utils.LavaFormatError("critical: delete delegation entry", err,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: provider},
utils.Attribute{Key: "chainID", Value: chainID},
)
}
} else {
err := k.delegationFS.AppendEntry(ctx, index, nextEpoch, &delegationEntry)
if err != nil {
// append should never fail here
return utils.LavaFormatError("failed to update delegation entry", err,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: provider},
utils.Attribute{Key: "chainID", Value: chainID},
)
}
}
// get, update and append the delegator entry
var delegatorEntry types.Delegator
index = types.DelegatorKey(delegator)
found = k.delegatorFS.FindEntry(ctx, index, nextEpoch, &delegatorEntry)
if !found {
// we found the delegation above, so the delegator must exist as well
return utils.LavaFormatError("critical: delegator entry for delegation not found",
types.ErrDelegationNotFound,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: provider},
utils.Attribute{Key: "chainID", Value: chainID},
)
}
// if delegation now becomes zero, then remove this provider from the delegator
// entry; and if the delegator entry becomes entry then remove it altogether.
// otherwise just append the new version (for next epoch).
if delegationEntry.Amount.IsZero() {
if len(k.GetAllProviderDelegatorDelegations(ctx, delegator, provider, nextEpoch)) == 0 {
delegatorEntry.DelProvider(provider)
if delegatorEntry.IsEmpty() {
err := k.delegatorFS.DelEntry(ctx, index, nextEpoch)
if err != nil {
// delete should never fail here
return utils.LavaFormatError("critical: delete delegator entry", err,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: provider},
utils.Attribute{Key: "chainID", Value: chainID},
)
}
} else {
err := k.delegatorFS.AppendEntry(ctx, index, nextEpoch, &delegatorEntry)
if err != nil {
// append should never fail here
return utils.LavaFormatError("failed to update delegator entry", err,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: provider},
utils.Attribute{Key: "chainID", Value: chainID},
)
}
}
}
}
if provider != types.EMPTY_PROVIDER {
return k.modifyStakeEntryDelegation(ctx, delegator, provider, chainID, amount, false)
}
return nil
}
// modifyStakeEntryDelegation modifies the (epochstorage) stake-entry of the provider for a chain based on the action (increase or decrease).
func (k Keeper) modifyStakeEntryDelegation(ctx sdk.Context, delegator, provider, chainID string, amount sdk.Coin, increase bool) (err error) {
stakeEntry, exists := k.epochstorageKeeper.GetStakeEntryByAddressCurrent(ctx, chainID, provider)
if !exists {
if increase {
return epochstoragetypes.ErrProviderNotStaked
}
// For decrease, if the provider doesn't exist, return without error
return nil
}
// Sanity check
if stakeEntry.Address != provider {
return utils.LavaFormatError("critical: delegate/un-delegate with provider address mismatch", sdkerrors.ErrInvalidAddress,
utils.Attribute{Key: "provider", Value: provider},
utils.Attribute{Key: "address", Value: stakeEntry.Address},
)
}
if delegator == provider {
if increase {
stakeEntry.Stake = stakeEntry.Stake.Add(amount)
} else {
stakeEntry.Stake, err = stakeEntry.Stake.SafeSub(amount)
if err != nil {
return fmt.Errorf("invalid or insufficient funds: %w", err)
}
}
} else {
if increase {
stakeEntry.DelegateTotal = stakeEntry.DelegateTotal.Add(amount)
} else {
stakeEntry.DelegateTotal, err = stakeEntry.DelegateTotal.SafeSub(amount)
if err != nil {
return fmt.Errorf("invalid or insufficient funds: %w", err)
}
}
}
details := map[string]string{
"provider": stakeEntry.Address,
"chain_id": stakeEntry.Chain,
"moniker": stakeEntry.Moniker,
"stake": stakeEntry.Stake.String(),
"effective_stake": stakeEntry.EffectiveStake().String() + stakeEntry.Stake.Denom,
}
if stakeEntry.Stake.IsLT(k.GetParams(ctx).MinSelfDelegation) {
err = k.epochstorageKeeper.RemoveStakeEntryCurrent(ctx, chainID, stakeEntry.Address)
if err != nil {
return utils.LavaFormatError("can't remove stake Entry after decreasing provider self delegation", err,
utils.Attribute{Key: "provider", Value: stakeEntry.Address},
utils.Attribute{Key: "spec", Value: chainID},
)
}
details["min_self_delegation"] = k.GetParams(ctx).MinSelfDelegation.String()
utils.LogLavaEvent(ctx, k.Logger(ctx), types.UnstakeFromUnbond, details, "unstaking provider due to unbond that lowered its stake below min self delegation")
unstakeHoldBlocks := k.epochstorageKeeper.GetUnstakeHoldBlocks(ctx, stakeEntry.Chain)
k.epochstorageKeeper.AppendUnstakeEntry(ctx, stakeEntry, unstakeHoldBlocks)
return nil
} else if stakeEntry.EffectiveStake().LT(k.specKeeper.GetMinStake(ctx, chainID).Amount) {
details["min_spec_stake"] = k.specKeeper.GetMinStake(ctx, chainID).String()
utils.LogLavaEvent(ctx, k.Logger(ctx), types.FreezeFromUnbond, details, "freezing provider due to stake below min spec stake")
stakeEntry.Freeze()
} else if delegator == provider && stakeEntry.IsFrozen() {
stakeEntry.UnFreeze(k.epochstorageKeeper.GetCurrentNextEpoch(ctx) + 1)
}
k.epochstorageKeeper.ModifyStakeEntryCurrent(ctx, chainID, stakeEntry)
return nil
}
// delegate lets a delegator delegate an amount of coins to a provider.
// (effective on next epoch)
func (k Keeper) delegate(ctx sdk.Context, delegator, provider, chainID string, amount sdk.Coin) error {
nextEpoch := k.epochstorageKeeper.GetCurrentNextEpoch(ctx)
_, err := sdk.AccAddressFromBech32(delegator)
if err != nil {
return utils.LavaFormatWarning("invalid delegator address", err,
utils.Attribute{Key: "delegator", Value: delegator},
)
}
if provider != types.EMPTY_PROVIDER {
if _, err = sdk.AccAddressFromBech32(provider); err != nil {
return utils.LavaFormatWarning("invalid provider address", err,
utils.Attribute{Key: "provider", Value: provider},
)
}
}
if err := utils.ValidateCoins(ctx, k.stakingKeeper.BondDenom(ctx), amount, false); err != nil {
return utils.LavaFormatWarning("failed to delegate: coin validation failed", err,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: provider},
utils.Attribute{Key: "chainID", Value: chainID},
)
}
err = k.increaseDelegation(ctx, delegator, provider, chainID, amount, nextEpoch)
if err != nil {
return utils.LavaFormatWarning("failed to increase delegation", err,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: provider},
utils.Attribute{Key: "amount", Value: amount.String()},
utils.Attribute{Key: "chainID", Value: chainID},
)
}
return nil
}
// Redelegate lets a delegator transfer its delegation between providers, but
// without the funds being subject to unstakeHoldBlocks witholding period.
// (effective on next epoch)
func (k Keeper) Redelegate(ctx sdk.Context, delegator, from, to, fromChainID, toChainID string, amount sdk.Coin) error {
_, foundFrom := k.specKeeper.GetSpec(ctx, fromChainID)
_, foundTo := k.specKeeper.GetSpec(ctx, toChainID)
if (!foundFrom && fromChainID != types.EMPTY_PROVIDER_CHAINID) ||
(!foundTo && toChainID != types.EMPTY_PROVIDER_CHAINID) {
return utils.LavaFormatWarning("cannot redelegate with invalid chain IDs", fmt.Errorf("chain ID not found"),
utils.LogAttr("from_chain_id", fromChainID),
utils.LogAttr("to_chain_id", toChainID),
)
}
nextEpoch := k.epochstorageKeeper.GetCurrentNextEpoch(ctx)
if _, err := sdk.AccAddressFromBech32(delegator); err != nil {
return utils.LavaFormatWarning("invalid delegator address", err,
utils.Attribute{Key: "delegator", Value: delegator},
)
}
if from != types.EMPTY_PROVIDER {
if _, err := sdk.AccAddressFromBech32(from); err != nil {
return utils.LavaFormatWarning("invalid from-provider address", err,
utils.Attribute{Key: "from_provider", Value: from},
)
}
}
if to != types.EMPTY_PROVIDER {
if _, err := sdk.AccAddressFromBech32(to); err != nil {
return utils.LavaFormatWarning("invalid to-provider address", err,
utils.Attribute{Key: "to_provider", Value: to},
)
}
}
if err := utils.ValidateCoins(ctx, k.stakingKeeper.BondDenom(ctx), amount, false); err != nil {
return utils.LavaFormatWarning("failed to redelegate: coin validation failed", err,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: to},
)
}
err := k.increaseDelegation(ctx, delegator, to, toChainID, amount, nextEpoch)
if err != nil {
return utils.LavaFormatWarning("failed to increase delegation", err,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: to},
utils.Attribute{Key: "amount", Value: amount.String()},
)
}
err = k.decreaseDelegation(ctx, delegator, from, fromChainID, amount, nextEpoch)
if err != nil {
return utils.LavaFormatWarning("failed to decrease delegation", err,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: from},
utils.Attribute{Key: "amount", Value: amount.String()},
)
}
// no need to transfer funds, because they remain in the dualstaking module
// (specifically in types.BondedPoolName).
return nil
}
// unbond lets a delegator get its delegated coins back from a provider. The
// delegation ends immediately, but coins are held for unstakeHoldBlocks period
// before released and transferred back to the delegator. The rewards from the
// provider will be updated accordingly (or terminate) from the next epoch.
// (effective on next epoch)
func (k Keeper) unbond(ctx sdk.Context, delegator, provider, chainID string, amount sdk.Coin) error {
_, found := k.specKeeper.GetSpec(ctx, chainID)
if chainID != types.EMPTY_PROVIDER_CHAINID && !found {
return utils.LavaFormatWarning("cannot unbond with invalid chain ID", fmt.Errorf("chain ID not found"),
utils.LogAttr("chain_id", chainID))
}
nextEpoch := k.epochstorageKeeper.GetCurrentNextEpoch(ctx)
if _, err := sdk.AccAddressFromBech32(delegator); err != nil {
return utils.LavaFormatWarning("invalid delegator address", err,
utils.Attribute{Key: "delegator", Value: delegator},
)
}
if provider != types.EMPTY_PROVIDER {
if _, err := sdk.AccAddressFromBech32(provider); err != nil {
return utils.LavaFormatWarning("invalid provider address", err,
utils.Attribute{Key: "provider", Value: provider},
)
}
}
if err := utils.ValidateCoins(ctx, k.stakingKeeper.BondDenom(ctx), amount, false); err != nil {
return utils.LavaFormatWarning("failed to unbond: coin validation failed", err,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: provider},
)
}
err := k.decreaseDelegation(ctx, delegator, provider, chainID, amount, nextEpoch)
if err != nil {
return utils.LavaFormatWarning("failed to decrease delegation", err,
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: provider},
utils.Attribute{Key: "amount", Value: amount.String()},
)
}
return nil
}
// GetDelegatorProviders gets all the providers the delegator is delegated to
func (k Keeper) GetDelegatorProviders(ctx sdk.Context, delegator string, epoch uint64) (providers []string, err error) {
_, err = sdk.AccAddressFromBech32(delegator)
if err != nil {
return nil, utils.LavaFormatWarning("cannot get delegator's providers", err,
utils.Attribute{Key: "delegator", Value: delegator},
)
}
var delegatorEntry types.Delegator
prefix := types.DelegatorKey(delegator)
k.delegatorFS.FindEntry(ctx, prefix, epoch, &delegatorEntry)
return delegatorEntry.Providers, nil
}
func (k Keeper) GetProviderDelegators(ctx sdk.Context, provider string, epoch uint64) ([]types.Delegation, error) {
if provider != types.EMPTY_PROVIDER {
_, err := sdk.AccAddressFromBech32(provider)
if err != nil {
return nil, utils.LavaFormatWarning("cannot get provider's delegators", err,
utils.Attribute{Key: "provider", Value: provider},
)
}
}
var delegations []types.Delegation
indices := k.delegationFS.GetAllEntryIndicesWithPrefix(ctx, provider)
for _, ind := range indices {
var delegation types.Delegation
found := k.delegationFS.FindEntry(ctx, ind, epoch, &delegation)
if !found {
provider, delegator, chainID := types.DelegationKeyDecode(ind)
utils.LavaFormatError("delegationFS entry index has no entry", fmt.Errorf("provider delegation not found"),
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: provider},
utils.Attribute{Key: "chainID", Value: chainID},
)
continue
}
delegations = append(delegations, delegation)
}
return delegations, nil
}
func (k Keeper) GetDelegation(ctx sdk.Context, delegator, provider, chainID string, epoch uint64) (types.Delegation, bool) {
var delegationEntry types.Delegation
index := types.DelegationKey(provider, delegator, chainID)
found := k.delegationFS.FindEntry(ctx, index, epoch, &delegationEntry)
return delegationEntry, found
}
func (k Keeper) GetAllProviderDelegatorDelegations(ctx sdk.Context, delegator, provider string, epoch uint64) []types.Delegation {
prefix := types.DelegationKey(provider, delegator, "")
indices := k.delegationFS.GetAllEntryIndicesWithPrefix(ctx, prefix)
var delegations []types.Delegation
for _, ind := range indices {
var delegation types.Delegation
_, deleted, _, found := k.delegationFS.FindEntryDetailed(ctx, ind, epoch, &delegation)
if !found {
if !deleted {
provider, delegator, chainID := types.DelegationKeyDecode(ind)
utils.LavaFormatError("delegationFS entry index has no entry", fmt.Errorf("provider delegation not found"),
utils.Attribute{Key: "delegator", Value: delegator},
utils.Attribute{Key: "provider", Value: provider},
utils.Attribute{Key: "chainID", Value: chainID},
)
}
continue
}
delegations = append(delegations, delegation)
}
return delegations
}
func (k Keeper) UnbondUniformProviders(ctx sdk.Context, delegator string, amount sdk.Coin) error {
epoch := k.epochstorageKeeper.GetCurrentNextEpoch(ctx)
providers, err := k.GetDelegatorProviders(ctx, delegator, epoch)
if err != nil {
return err
}
// first remove from the empty provider
if lavaslices.Contains[string](providers, types.EMPTY_PROVIDER) {
delegation, found := k.GetDelegation(ctx, delegator, types.EMPTY_PROVIDER, types.EMPTY_PROVIDER_CHAINID, epoch)
if found {
if delegation.Amount.Amount.GTE(amount.Amount) {
// we have enough here, remove all from empty delegator and bail
return k.unbond(ctx, delegator, types.EMPTY_PROVIDER, types.EMPTY_PROVIDER_CHAINID, amount)
} else {
// we dont have enough in the empty provider, remove everything and continue with the rest
err = k.unbond(ctx, delegator, types.EMPTY_PROVIDER, types.EMPTY_PROVIDER_CHAINID, delegation.Amount)
if err != nil {
return err
}
amount = amount.Sub(delegation.Amount)
}
}
}
providers, _ = lavaslices.Remove[string](providers, types.EMPTY_PROVIDER)
var delegations []types.Delegation
for _, provider := range providers {
delegations = append(delegations, k.GetAllProviderDelegatorDelegations(ctx, delegator, provider, epoch)...)
}
slices.SortFunc(delegations, func(i, j types.Delegation) bool {
return i.Amount.IsLT(j.Amount)
})
type delegationKey struct {
provider string
chainID string
}
unbondAmount := map[delegationKey]sdk.Coin{}
// first round of deduction
for i := range delegations {
key := delegationKey{provider: delegations[i].Provider, chainID: delegations[i].ChainID}
amountToDeduct := amount.Amount.QuoRaw(int64(len(delegations) - i))
if delegations[i].Amount.Amount.LT(amountToDeduct) {
unbondAmount[key] = delegations[i].Amount
amount = amount.Sub(delegations[i].Amount)
delegations[i].Amount.Amount = sdk.ZeroInt()
} else {
coinToDeduct := sdk.NewCoin(delegations[i].Amount.Denom, amountToDeduct)
unbondAmount[key] = coinToDeduct
amount = amount.Sub(coinToDeduct)
delegations[i].Amount = delegations[i].Amount.Sub(coinToDeduct)
}
}
// we have leftovers, remove it ununiformaly
for i := range delegations {
if amount.IsZero() {
break
}
key := delegationKey{provider: delegations[i].Provider, chainID: delegations[i].ChainID}
if delegations[i].Amount.Amount.LT(amount.Amount) {
unbondAmount[key].Add(delegations[i].Amount)
amount = amount.Sub(delegations[i].Amount)
} else {
unbondAmount[key].Add(amount)
amount = amount.Sub(amount)
}
}
// now unbond all
for i := range delegations {
key := delegationKey{provider: delegations[i].Provider, chainID: delegations[i].ChainID}
err := k.unbond(ctx, delegator, delegations[i].Provider, delegations[i].ChainID, unbondAmount[key])
if err != nil {
return err
}
}
return nil
}
// returns the difference between validators delegations and provider delegation (validators-providers)
func (k Keeper) VerifyDelegatorBalance(ctx sdk.Context, delAddr sdk.AccAddress) (math.Int, int, error) {
nextEpoch := k.epochstorageKeeper.GetCurrentNextEpoch(ctx)
providers, err := k.GetDelegatorProviders(ctx, delAddr.String(), nextEpoch)
if err != nil {
return math.ZeroInt(), 0, err
}
sumProviderDelegations := sdk.ZeroInt()
for _, p := range providers {
delegations := k.GetAllProviderDelegatorDelegations(ctx, delAddr.String(), p, nextEpoch)
for _, d := range delegations {
sumProviderDelegations = sumProviderDelegations.Add(d.Amount.Amount)
}
}
sumValidatorDelegations := sdk.ZeroInt()
delegations := k.stakingKeeper.GetAllDelegatorDelegations(ctx, delAddr)
for _, d := range delegations {
v, found := k.stakingKeeper.GetValidator(ctx, d.GetValidatorAddr())
if found {
sumValidatorDelegations = sumValidatorDelegations.Add(v.TokensFromSharesRoundUp(d.Shares).Ceil().TruncateInt())
}
}
return sumValidatorDelegations.Sub(sumProviderDelegations), len(providers), nil
}