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feat: slashing withdrawals #126

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feat: slashing withdrawals #126

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1 change: 1 addition & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -32,3 +32,4 @@ chart_releases
/snapshots/**/*.csv
*.sql
*.dump
.env
9 changes: 9 additions & 0 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -84,6 +84,15 @@ lint:
test:
./scripts/goTest.sh -v -p 1 -parallel 1 ./...

.PHONY: test-file
test-file:
@if [ -z "$(FILE)" ]; then \
echo "Error: FILE variable is not set."; \
echo "Usage: make test-file FILE=path/to/your_test_file.go"; \
exit 1; \
fi
./scripts/goTest.sh -v -p 1 -parallel 1 $(FILE)

.PHONY: staticcheck
staticcheck:
staticcheck ./...
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61 changes: 61 additions & 0 deletions pkg/eigenState/stakerShares/stakerShares.go
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Expand Up @@ -357,6 +357,62 @@ func (ss *StakerSharesModel) handleM2QueuedWithdrawal(log *storage.TransactionLo
return records, nil
}

type slashingWithdrawalQueuedOutputData struct {
Withdrawal struct {
Nonce int `json:"nonce"`
ScaledShares []json.Number `json:"scaledShares"`
Staker string `json:"staker"`
StartBlock uint64 `json:"startBlock"`
Strategies []string `json:"strategies"`
} `json:"withdrawal"`
WithdrawalRoot []byte `json:"withdrawalRoot"`
SharesToWithdraw []json.Number `json:"sharesToWithdraw"`
WithdrawalRootString string
}

func parseLogOutputForSlashingWithdrawalQueuedEvent(outputDataStr string) (*slashingWithdrawalQueuedOutputData, error) {
outputData := &slashingWithdrawalQueuedOutputData{}
decoder := json.NewDecoder(strings.NewReader(outputDataStr))
decoder.UseNumber()

err := decoder.Decode(&outputData)
if err != nil {
return nil, err
}
outputData.Withdrawal.Staker = strings.ToLower(outputData.Withdrawal.Staker)
outputData.WithdrawalRootString = hex.EncodeToString(outputData.WithdrawalRoot)
return outputData, err
}

// handleSlashingWithdrawalQueued handles the WithdrawalQueued event from the DelegationManager contract for slashing
func (ss *StakerSharesModel) handleSlashingWithdrawalQueued(log *storage.TransactionLog) ([]*StakerShareDeltas, error) {
// do the same thing as handleM2QueuedWithdrawal
outputData, err := parseLogOutputForSlashingWithdrawalQueuedEvent(log.OutputData)
if err != nil {
return nil, err
}

records := make([]*StakerShareDeltas, 0)
for i, strategy := range outputData.Withdrawal.Strategies {
shares, success := numbers.NewBig257().SetString(outputData.SharesToWithdraw[i].String(), 10)
if !success {
return nil, xerrors.Errorf("Failed to convert shares to big.Int: %s", outputData.SharesToWithdraw[i])
}
r := &StakerShareDeltas{
Staker: outputData.Withdrawal.Staker,
Strategy: strategy,
Shares: shares.Mul(shares, big.NewInt(-1)).String(),
StrategyIndex: uint64(i),
LogIndex: log.LogIndex,
TransactionHash: log.TransactionHash,
BlockNumber: log.BlockNumber,
WithdrawalRootString: outputData.WithdrawalRootString,
}
records = append(records, r)
}
return records, nil
}

type AccumulatedStateChanges struct {
Changes []*StakerShareDeltas
}
Expand Down Expand Up @@ -436,6 +492,11 @@ func (ss *StakerSharesModel) GetStateTransitions() (types.StateTransitions[*Accu
ss.stateAccumulator[log.BlockNumber] = filteredDeltas
}
}
} else if log.Address == contractAddresses.DelegationManager && log.EventName == "SlashingWithdrawalQueued" {
records, err := ss.handleSlashingWithdrawalQueued(log)
if err == nil && records != nil {
deltaRecords = append(deltaRecords, records...)
}
} else {
ss.logger.Sugar().Debugw("Got stakerShares event that we don't handle",
zap.String("eventName", log.EventName),
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78 changes: 78 additions & 0 deletions pkg/eigenState/stakerShares/stakerShares_test.go
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Expand Up @@ -456,6 +456,84 @@ func Test_StakerSharesState(t *testing.T) {
}
assert.Equal(t, 4, count)
})

t.Run("Should capture Slashing withdrawals", func(t *testing.T) {
esm := stateManager.NewEigenStateManager(l, grm)
blockNumber := uint64(200)
log := storage.TransactionLog{
TransactionHash: "some hash",
TransactionIndex: big.NewInt(300).Uint64(),
BlockNumber: blockNumber,
Address: cfg.GetContractsMapForChain().DelegationManager,
Arguments: `[{"Name": "withdrawalRoot", "Type": "bytes32", "Value": ""}, {"Name": "withdrawal", "Type": "(address,address,address,uint256,uint32,address[],uint256[])", "Value": ""}]`,
EventName: "SlashingWithdrawalQueued",
LogIndex: big.NewInt(600).Uint64(),
OutputData: `{"withdrawal": {"nonce": 0, "scaledShares": [1000000000000000000], "staker": "0x3c42cd72639e3e8d11ab8d0072cc13bd5d8aa83c", "startBlock": 1215690, "strategies": ["0xd523267698c81a372191136e477fdebfa33d9fb4"], "withdrawer": "0x3c42cd72639e3e8d11ab8d0072cc13bd5d8aa83c", "delegatedTo": "0x2177dee1f66d6dbfbf517d9c4f316024c6a21aeb"}, "withdrawalRoot": [24, 23, 49, 137, 14, 63, 119, 12, 234, 225, 63, 35, 109, 249, 112, 24, 241, 118, 212, 52, 22, 107, 202, 56, 105, 37, 68, 47, 169, 23, 142, 135], "sharesToWithdraw": [50000000000000]}`,
CreatedAt: time.Time{},
UpdatedAt: time.Time{},
DeletedAt: time.Time{},
}

model, err := NewStakerSharesModel(esm, grm, l, cfg)
assert.Nil(t, err)

err = model.SetupStateForBlock(blockNumber)
assert.Nil(t, err)

change, err := model.HandleStateChange(&log)
assert.Nil(t, err)
assert.NotNil(t, change)

diffs := change.(*AccumulatedStateChanges)
assert.Equal(t, 1, len(diffs.Changes))

shareDiff := diffs.Changes[0]
assert.Equal(t, "-50000000000000", shareDiff.Shares)
assert.Equal(t, strings.ToLower("0x3c42cd72639e3e8d11ab8d0072cc13bd5d8aa83c"), shareDiff.Staker)
assert.Equal(t, "0xd523267698c81a372191136e477fdebfa33d9fb4", shareDiff.Strategy)
})

t.Run("Should capture Slashing withdrawals for multiple strategies", func(t *testing.T) {
esm := stateManager.NewEigenStateManager(l, grm)
blockNumber := uint64(200)
log := storage.TransactionLog{
TransactionHash: "some hash",
TransactionIndex: big.NewInt(300).Uint64(),
BlockNumber: blockNumber,
Address: cfg.GetContractsMapForChain().DelegationManager,
Arguments: `[{"Name": "withdrawalRoot", "Type": "bytes32", "Value": ""}, {"Name": "withdrawal", "Type": "(address,address,address,uint256,uint32,address[],uint256[])", "Value": ""}]`,
EventName: "SlashingWithdrawalQueued",
LogIndex: big.NewInt(600).Uint64(),
OutputData: `{"withdrawal": {"nonce": 0, "scaledShares": [1000000000000000000, 2000000000000000000], "staker": "0x3c42cd72639e3e8d11ab8d0072cc13bd5d8aa83c", "startBlock": 1215690, "strategies": ["0xd523267698c81a372191136e477fdebfa33d9fb4", "0xe523267698c81a372191136e477fdebfa33d9fb5"], "withdrawer": "0x3c42cd72639e3e8d11ab8d0072cc13bd5d8aa83c", "delegatedTo": "0x2177dee1f66d6dbfbf517d9c4f316024c6a21aeb"}, "withdrawalRoot": [24, 23, 49, 137, 14, 63, 119, 12, 234, 225, 63, 35, 109, 249, 112, 24, 241, 118, 212, 52, 22, 107, 202, 56, 105, 37, 68, 47, 169, 23, 142, 135], "sharesToWithdraw": [50000000000000, 100000000000000]}`,
CreatedAt: time.Time{},
UpdatedAt: time.Time{},
DeletedAt: time.Time{},
}

model, err := NewStakerSharesModel(esm, grm, l, cfg)
assert.Nil(t, err)

err = model.SetupStateForBlock(blockNumber)
assert.Nil(t, err)

change, err := model.HandleStateChange(&log)
assert.Nil(t, err)
assert.NotNil(t, change)

diffs := change.(*AccumulatedStateChanges)
assert.Equal(t, 2, len(diffs.Changes))

shareDiff := diffs.Changes[0]
assert.Equal(t, "-50000000000000", shareDiff.Shares)
assert.Equal(t, strings.ToLower("0x3c42cd72639e3e8d11ab8d0072cc13bd5d8aa83c"), shareDiff.Staker)
assert.Equal(t, "0xd523267698c81a372191136e477fdebfa33d9fb4", shareDiff.Strategy)

shareDiff = diffs.Changes[1]
assert.Equal(t, "-100000000000000", shareDiff.Shares)
assert.Equal(t, strings.ToLower("0x3c42cd72639e3e8d11ab8d0072cc13bd5d8aa83c"), shareDiff.Staker)
assert.Equal(t, "0xe523267698c81a372191136e477fdebfa33d9fb5", shareDiff.Strategy)
})

t.Cleanup(func() {
postgres.TeardownTestDatabase(dbName, cfg, grm, l)
})
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