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OracleReportSanityChecker

Some vital data for the Lido protocol is collected off-chain and delivered on-chain via Oracle contracts: AccountingOracle, ValidatorsExitBusOracle. Due to the high impact of data provided by the Oracles on the state of the protocol, each Oracle's report passes a set of onchain sanity checks. For the simplicity of the contracts responsible for handling Oracle's reports, all sanity checks were collected in the standalone OracleReportSanityChecker contract.

Besides the validation methods, the OracleReportSanityChecker contract contains a set of tunable limits and restrictions used during the report validation process. To configure the limits values contract provides the lever methods described in the standalone section. Access to lever methods is restricted using the functionality of the AccessControlEnumerable contract and a bunch of granular roles.

Limits List​

OracleReportSanityChecker introduces a new type LimitsList which contains all the limits used by the contract.

struct LimitsList {
    uint256 exitedValidatorsPerDayLimit;
    uint256 appearedValidatorsPerDayLimit;
    uint256 annualBalanceIncreaseBPLimit;
    uint256 simulatedShareRateDeviationBPLimit;
    uint256 maxValidatorExitRequestsPerReport;
    uint256 maxItemsPerExtraDataTransaction;
    uint256 maxNodeOperatorsPerExtraDataItem;
    uint256 requestTimestampMargin;
    uint256 maxPositiveTokenRebase;
    uint256 initialSlashingAmountPWei;
    uint256 inactivityPenaltiesAmountPWei;
    uint256 clBalanceOraclesErrorUpperBPLimit;
}
  • exitedValidatorsPerDayLimit ∈ [0, 65535] — the max possible number of validators that might be reported as exited per single day, exited are reported according to the Consensus Layer churn limit.
  • appearedValidatorsPerDayLimit ∈ [0, 65535] — the max possible number of validators that might been reported as appeared during a single day. AccountingOracle reports validators as appeared once them become pending (might be not activated yet). Thus, this limit should be high enough for such cases because Consensus Layer has no intrinsic churn limit for the amount of pending validators (only for activated instead). For Lido it's limited by the max daily deposits via DepositSecurityModule.
  • annualBalanceIncreaseBPLimit ∈ [0, 10000] — the max annual increase of the total validators' balances on the Consensus Layer since the previous oracle report. Represented in the Basis Points (100% == 10000).
  • simulatedShareRateDeviationBPLimit ∈ [0, 10000] — the max deviation of the provided simulatedShareRate and the actual one within the currently processing oracle report. Represented in the Basis Points (100% == 10000).
  • maxValidatorExitRequestsPerReport ∈ [0, 65535] — the max number of exit requests allowed in report to ValidatorsExitBusOracle
  • maxItemsPerExtraDataTransaction ∈ [0, 65535] — the max number of data list items reported to accounting oracle in extra data per single transaction.
  • maxNodeOperatorsPerExtraDataItem ∈ [0, 65535] — the max number of node operators reported per extra data list item
  • requestTimestampMargin ∈ [0, type(uint64).max] — the min time required to be passed from the creation of the request to be finalized till the time of the oracle report
  • maxPositiveTokenRebase ∈ [1, type(uint64).max] — the max positive token rebase allowed per single oracle report token rebase happens on total supply adjustment, huge positive rebase can incur oracle report sandwiching. Uses 1e9 precision, e.g.: 1e6 — 0.1%; 1e9 — 100%; type(uint64).max — unlimited rebase.
  • initialSlashingAmountPWei ∈ [0, 65535] - initial slashing amount per one validator to calculate initial slashing of the validators' balances on the Consensus Layer.
  • inactivityPenaltiesAmountPWei ∈ [0, 65535] - inactivity penalties amount per one validator to calculate penalties of the validators' balances on the Consensus Layer.
  • clBalanceOraclesErrorUpperBPLimit ∈ [0, 10000] - the maximum percent on how Second Opinion Oracle reported value could be greater than reported by the AccountingOracle. There is an assumption that second opinion oracle CL balance can be greater as calculated for the withdrawal credentials. Represented in the Basis Points (100% == 10000).

There is also parameter for Second Opinion Oracle which is not a part of the LimitList structure. However it's modification requires the same type of roles as for the Limits. It could be changed with a general setOracleReportLimits() function or specific setSecondOpinionOracleAndCLBalanceUpperMargin().

For the details about meaning of the parameters: initialSlashingAmountPWei, inactivityPenaltiesAmountPWei, clBalanceOraclesErrorUpperBPLimit and Second Opinion Oracle please refer to LIP-23.

Sanity Checks​

checkAccountingOracleReport()​

Applies sanity checks to the accounting parameters of Lido's Oracle report.

note

Below is the list of restrictions checked by the method execution:

  • Revert with IncorrectWithdrawalsVaultBalance(uint256 actualWithdrawalVaultBalance) error when the reported withdrawals vault balance is greater than the actual balance of the withdrawal vault.
  • Revert with IncorrectELRewardsVaultBalance(uint256 actualELRewardsVaultBalance) error when reported EL rewards vault balance is greater than the actual balance of EL rewards vault.
  • Revert with IncorrectSharesRequestedToBurn(uint256 actualSharesToBurn) error when the amount of stETH shares requested to burn exceeds the number of shares marked to be burned in the Burner contract.
  • Revert with IncorrectCLBalanceDecrease(uint256 negativeCLRebaseSum, uint256 maxNegativeCLRebaseSum) error when Consensus Layer balance decrease exceeds the allowed. See LIP-23 for this and other similar errors.
  • Revert with IncorrectCLBalanceDecrease(uint256 negativeCLRebaseSum, uint256 maxNegativeCLRebaseSum) error when Consensus Layer balance reported by oracles and second opinion oracle is too different.
  • Revert with NegativeRebaseFailedWithdrawalVaultBalanceMismatch(uint256 reportedValue, uint256 provedValue) error when Withdrawal vault balance reported by oracles and second opinion oracle is different.
  • Revert with NegativeRebaseFailedSecondOpinionReportIsNotReady() error when second opinion oracle report is not available.
  • Revert with IncorrectCLBalanceIncrease(uint256 annualBalanceDiff) error when Consensus Layer annual balance increase expressed in basis points exceeds allowed LimitsList.annualBalanceIncreaseBPLimit.
  • Revert with IncorrectAppearedValidators(uint256 appearedValidatorsLimit) error when the number of appeared validators exceeds the limit set by LimitsList.appearedValidatorsPerDayLimit.
function checkAccountingOracleReport(
    uint256 _timeElapsed,
    uint256 _preCLBalance,
    uint256 _postCLBalance,
    uint256 _withdrawalVaultBalance,
    uint256 _elRewardsVaultBalance,
    uint256 _sharesRequestedToBurn,
    uint256 _preCLValidators,
    uint256 _postCLValidators
)

Arguments​

  • _timeElapsed — time elapsed since the previous oracle report, measured in seconds
  • _preCLBalance — sum of all Lido validators' balances on the Consensus Layer before the current oracle report (NB: also include the initial balance of newly appeared validators)
  • _postCLBalance — sum of all Lido validators' balances on the Consensus Layer after the current oracle report
  • _withdrawalVaultBalance — withdrawal vault balance on Execution Layer for the report reference slot
  • _elRewardsVaultBalance — el rewards vault balance on Execution Layer for the report reference slot
  • _sharesRequestedToBurn — shares requested to burn for the report reference slot
  • _preCLValidators — Lido-participating validators on the CL side before the current oracle report
  • _postCLValidators — Lido-participating validators on the CL side after the current oracle report

checkExitBusOracleReport()​

Validates that number of exit requests does not exceed the limit set by LimitsList.maxValidatorExitRequestsPerReport.

note

Reverts with IncorrectNumberOfExitRequestsPerReport(uint256 maxRequestsCount) error when check is failed.

function checkExitBusOracleReport(uint256 _exitRequestsCount)

Arguments​

  • _exitRequestsCount — number of validator exit requests supplied per oracle report

checkExitedValidatorsRatePerDay()​

Validates that number of exited validators does not exceed the limit set by LimitsList.exitedValidatorsPerDayLimit.

note

Reverts with ExitedValidatorsLimitExceeded(uint256 limitPerDay, uint256 exitedPerDay) error when check is failed.

function checkExitedValidatorsRatePerDay(uint256 _exitedValidatorsCount)

Arguments​

  • _exitedValidatorsCount — number of validator exit requests supplied per oracle report

checkNodeOperatorsPerExtraDataItemCount()​

Validates that number of node operators reported per extra data item does not exceed the limit set by LimitsList.maxNodeOperatorsPerExtraDataItem.

note

Reverts with TooManyNodeOpsPerExtraDataItem(uint256 itemIndex, uint256 nodeOpsCount) error when check is failed.

function checkNodeOperatorsPerExtraDataItemCount(
    uint256 _itemIndex,
    uint256 _nodeOperatorsCount
)

Arguments​

  • _itemIndex — index of item in extra data
  • _nodeOperatorsCount — number of validator exit requests supplied per oracle report

checkExtraDataItemsCountPerTransaction()​

Validates that number of extra data items per transaction in the report does not exceed the limit set by LimitsList.maxItemsPerExtraDataTransaction.

note

Reverts with TooManyItemsPerExtraDataTransaction(uint256 maxItemsCount, uint256 receivedItemsCount) error when check is failed.

function checkExtraDataItemsCountPerTransaction(uint256 _extraDataListItemsCount)

Arguments​

  • _extraDataListItemsCount — number of items per single transaction in the accounting oracle report

checkWithdrawalQueueOracleReport()​

Validates that withdrawal request with the passed _lastFinalizableRequestId was created more than LimitsList.requestTimestampMargin seconds ago.

note

Reverts with IncorrectRequestFinalization(uint256 requestCreationBlock) error when check is failed.

function checkWithdrawalQueueOracleReport(
    uint256 _lastFinalizableRequestId,
    uint256 _reportTimestamp
)

Arguments​

  • _lastFinalizableRequestId — last finalizable withdrawal request id
  • _reportTimestamp — timestamp when the originated oracle report was submitted

checkSimulatedShareRate()​

Applies sanity checks to the simulated share rate for withdrawal requests finalization.

note

Reverts with IncorrectSimulatedShareRate(uint256 simulatedShareRate, uint256 actualShareRate) error when simulated share rate deviation exceeds the limit set by LimitsList.simulatedShareRateDeviationBPLimit

function checkSimulatedShareRate(
    uint256 _postTotalPooledEther,
    uint256 _postTotalShares,
    uint256 _etherLockedOnWithdrawalQueue,
    uint256 _sharesBurntDueToWithdrawals,
    uint256 _simulatedShareRate
)

Arguments​

  • _postTotalPooledEther — total pooled ether after report applied
  • _postTotalShares — total shares after report applied
  • _etherLockedOnWithdrawalQueue — ether locked on withdrawal queue for the current oracle report
  • _sharesBurntDueToWithdrawals — shares burnt due to withdrawals finalization
  • _simulatedShareRate — share rate provided with the oracle report (simulated via off-chain "eth_call")

View Methods​

getLidoLocator()​

Returns the address of the protocol-wide LidoLocator instance.

function getLidoLocator() returns (address)

getOracleReportLimits()​

Returns the limits list used for the sanity checks as the LimitsList type.

function getOracleReportLimits() returns (LimitsList memory)

getMaxPositiveTokenRebase()​

Returns max positive token rebase value with 1e9 precision (e.g.: 1e6 — 0.1%; 1e9 — 100%):

note

Special values:

  • 0 (zero value) means uninitialized
  • type(uint64).max means unlimited, e.g. not enforced

Get max positive rebase allowed per single oracle report. Token rebase happens on total supply and/or total shares adjustment, while huge positive rebase can incur oracle report sandwiching stealing part of the stETH holders' rewards.

The relative positive rebase value derived as follows:

stETH balance for the account defined as:

    balanceOf(account) =
        shares[account] * totalPooledEther / totalShares = shares[account] * shareRate

Suppose shareRate changes when oracle reports (see handleOracleReport) which means that token rebase happens:

    preShareRate = preTotalPooledEther() / preTotalShares()
    postShareRate = postTotalPooledEther() / postTotalShares()
    R = (postShareRate - preShareRate) / preShareRate

here R > 0 corresponds to the relative positive rebase value (i.e., instant APR).

function getMaxPositiveTokenRebase() returns (uint256)

smoothenTokenRebase()​

Evaluates the following amounts during Lido's oracle report processing:

  • the allowed ETH amount that might be taken from the withdrawal vault and EL rewards vault
  • the allowed amount of stETH shares to be burnt
function smoothenTokenRebase(
    uint256 _preTotalPooledEther,
    uint256 _preTotalShares,
    uint256 _preCLBalance,
    uint256 _postCLBalance,
    uint256 _withdrawalVaultBalance,
    uint256 _elRewardsVaultBalance,
    uint256 _sharesRequestedToBurn,
    uint256 _etherToLockForWithdrawals,
    uint256 _newSharesToBurnForWithdrawals
) returns (
    uint256 withdrawals,
    uint256 elRewards,
    uint256 simulatedSharesToBurn,
    uint256 sharesToBurn
)

Arguments​

  • _preTotalPooledEther — total amount of ETH controlled by the protocol
  • _preTotalShares — total amount of minted stETH shares
  • _preCLBalance — sum of all Lido validators' balances on the Consensus Layer before the current oracle report
  • _postCLBalance — sum of all Lido validators' balances on the Consensus Layer after the current oracle report
  • _withdrawalVaultBalance — withdrawal vault balance on Execution Layer for the report calculation moment
  • _elRewardsVaultBalance — elRewards vault balance on Execution Layer for the report calculation moment
  • _sharesRequestedToBurn — shares requested to burn through Burner for the report calculation moment
  • _etherToLockForWithdrawals — ether to lock on withdrawals queue contract
  • _newSharesToBurnForWithdrawals — new shares to burn due to withdrawal requests finalization

Returns​

  • withdrawals — ETH amount allowed to be taken from the withdrawals vault
  • elRewards — ETH amount allowed to be taken from the EL rewards vault
  • simulatedSharesToBurn — simulated amount of shares to be burnt (if no ether locked on withdrawals)
  • sharesToBurn — amount of shares to be burnt (accounting for withdrawals finalization)

Lever Methods​

setOracleReportLimits()​

Sets the new values for the limits list.

note
  • Requires ALL_LIMITS_MANAGER_ROLE to be granted to the caller.
  • Reverts with IncorrectLimitValue(uint256 value, uint256 minAllowedValue, uint256 maxAllowedValue) error when some value in the passed data out of the allowed range. See details of allowed value boundaries in the Limits List section.
  • Emits SecondOpinionOracleChanged(ISecondOpinionOracle indexed secondOpinionOracle) in case of change for the second opinion oracle.
function setOracleReportLimits(LimitsList calldata _limitsList, ISecondOpinionOracle _secondOpinionOracle)

Arguments​

  • _limitsList — new limits list values
  • _secondOpinionOracle — new second opinion oracle value

setExitedValidatorsPerDayLimit()​

Sets the new value for the LimitsList.exitedValidatorsPerDayLimit. The limit is applicable for exited validators.

note
  • Requires EXITED_VALIDATORS_PER_DAY_LIMIT_MANAGER_ROLE to be granted to the caller.
  • Reverts with IncorrectLimitValue() error when the passed value is out of the allowed range. See Limits List section for details.
function setExitedValidatorsPerDayLimit(uint256 _exitedValidatorsPerDayLimit)

Arguments​

  • _exitedValidatorsPerDayLimit — new LimitsList.exitedValidatorsPerDayLimit value

setAppearedValidatorsPerDayLimit()​

Sets the new value for the LimitsList.appearedValidatorsPerDayLimit. The limit is applicable for appeared validators.

note
  • Requires APPEARED_VALIDATORS_PER_DAY_LIMIT_MANAGER_ROLE to be granted to the caller.
  • Reverts with IncorrectLimitValue() error when the passed value is out of the allowed range. See Limits List section for details.
function setAppearedValidatorsPerDayLimit(uint256 _appearedValidatorsPerDayLimit)

Arguments​

  • _appearedValidatorsPerDayLimit — new LimitsList.appearedValidatorsPerDayLimit value

setAnnualBalanceIncreaseBPLimit()​

Sets the new value for the LimitsList.annualBalanceIncreaseBPLimit variable.

note
  • Requires ANNUAL_BALANCE_INCREASE_LIMIT_MANAGER_ROLE to be granted to the caller.
  • Reverts with IncorrectLimitValue() error when the passed value is out of the allowed range. See Limits List section for details.
function setAnnualBalanceIncreaseBPLimit(uint256 _annualBalanceIncreaseBPLimit)

Arguments​

  • _annualBalanceIncreaseBPLimit — new value for LimitsList.annualBalanceIncreaseBPLimit

setSimulatedShareRateDeviationBPLimit()​

Sets the new value for the LimitsList.simulatedShareRateDeviationBPLimit variable.

note
  • Requires SHARE_RATE_DEVIATION_LIMIT_MANAGER_ROLE to be granted to the caller.
  • Reverts with IncorrectLimitValue() error when the passed value is out of the allowed range. See Limits List section for details.
function setSimulatedShareRateDeviationBPLimit(uint256 _simulatedShareRateDeviationBPLimit)

Arguments​

  • _simulatedShareRateDeviationBPLimit — new value for LimitsList.simulatedShareRateDeviationBPLimit

setMaxExitRequestsPerOracleReport()​

Sets the new value for the LimitsList.maxValidatorExitRequestsPerReport.

note
  • Requires MAX_VALIDATOR_EXIT_REQUESTS_PER_REPORT_ROLE to be granted to the caller.
  • Reverts with IncorrectLimitValue() error when the passed value is out of the allowed range. See Limits List section for details.
function setMaxExitRequestsPerOracleReport(uint256 _maxValidatorExitRequestsPerReport)

Arguments​

  • _maxValidatorExitRequestsPerReport — new value for LimitsList.maxValidatorExitRequestsPerReport

setRequestTimestampMargin()​

Sets the new value for the LimitsList.requestTimestampMargin variable.

note
  • Requires REQUEST_TIMESTAMP_MARGIN_MANAGER_ROLE to be granted to the caller.
  • Reverts with IncorrectLimitValue() error when the passed value is out of the allowed range. See Limits List section for details.
function setRequestTimestampMargin(uint256 _requestTimestampMargin)

Arguments​

  • _requestTimestampMargin — new new value for LimitsList.requestTimestampMargin

setMaxPositiveTokenRebase()​

Sets the new value for the LimitsList.maxPositiveTokenRebase variable.

note
  • Requires MAX_POSITIVE_TOKEN_REBASE_MANAGER_ROLE to be granted to the caller.
  • Reverts with IncorrectLimitValue() error when the passed value is out of the allowed range. See Limits List section for details.
function setMaxPositiveTokenRebase(uint256 _maxPositiveTokenRebase)

Arguments​

  • _maxPositiveTokenRebase — new value for LimitsList.maxPositiveTokenRebase

setMaxItemsPerExtraDataTransaction()​

Sets the new value for the LimitsList.maxItemsPerExtraDataTransaction variable.

note
  • Requires MAX_ITEMS_PER_EXTRA_DATA_TRANSACTION_ROLE to be granted to the caller.
  • Reverts with IncorrectLimitValue() error when the passed value is out of the allowed range. See Limits List section for details.
function setMaxItemsPerExtraDataTransaction(uint256 _maxItemsPerExtraDataTransaction)

Arguments​

  • _maxItemsPerExtraDataTransaction — new value for LimitsList.maxItemsPerExtraDataTransaction

setMaxNodeOperatorsPerExtraDataItem()​

Sets the new value for the LimitsList.maxNodeOperatorsPerExtraDataItem variable.

note
  • Requires MAX_NODE_OPERATORS_PER_EXTRA_DATA_ITEM_ROLE to be granted to the caller.
  • Reverts with IncorrectLimitValue() error when the passed value is out of the allowed range. See Limits List section for details.
function setMaxNodeOperatorsPerExtraDataItem(uint256 _maxNodeOperatorsPerExtraDataItem)

Arguments​

  • _maxNodeOperatorsPerExtraDataItem — new value for LimitsList.maxNodeOperatorsPerExtraDataItem

setSecondOpinionOracleAndCLBalanceUpperMargin()​

Sets the new value for the Second Opinion Oracle and LimitsList.clBalanceOraclesErrorUpperBPLimit variable.

note
  • Requires SECOND_OPINION_MANAGER_ROLE to be granted to the caller.
  • Reverts with IncorrectLimitValue() error when the passed value is out of the allowed range. See Limits List section for details.
  • Emits SecondOpinionOracleChanged(ISecondOpinionOracle indexed secondOpinionOracle) in case of change for the second opinion oracle.
function setSecondOpinionOracleAndCLBalanceUpperMargin(ISecondOpinionOracle _secondOpinionOracle, uint256 _clBalanceOraclesErrorUpperBPLimit)

Arguments​

  • _secondOpinionOracle — new value for Second Opinion Oracle
  • _clBalanceOraclesErrorUpperBPLimit — new value for LimitsList.clBalanceOraclesErrorUpperBPLimit

setInitialSlashingAndPenaltiesAmount()​

Sets the new value for the LimitsList.initialSlashingAmountPWei and LimitsList.inactivityPenaltiesAmountPWei variable.

note
  • Requires INITIAL_SLASHING_AND_PENALTIES_MANAGER_ROLE to be granted to the caller.
  • Reverts with IncorrectLimitValue() error when the passed value is out of the allowed range. See Limits List section for details.
function setInitialSlashingAndPenaltiesAmount(uint256 _initialSlashingAmountPWei, uint256 _inactivityPenaltiesAmountPWei)

Arguments​

  • _initialSlashingAmountPWei — new value for LimitsList.initialSlashingAmountPWei
  • _inactivityPenaltiesAmountPWei — new value for LimitsList.inactivityPenaltiesAmountPWei

Permissions​

ALL_LIMITS_MANAGER_ROLE()​

bytes32 public constant ALL_LIMITS_MANAGER_ROLE = keccak256("ALL_LIMITS_MANAGER_ROLE")

Granting this role allows updating ANY value of the Limits List. See setOracleReportLimits() method.

Grant this role with caution and give preference to the granular roles described below.

EXITED_VALIDATORS_PER_DAY_LIMIT_MANAGER_ROLE()​

Granting this role allows updating the exitedValidatorsPerDayLimit value of the Limits List. See the setExitedValidatorsPerDayLimit() method.

bytes32 public constant EXITED_VALIDATORS_PER_DAY_LIMIT_MANAGER_ROLE =
    keccak256("EXITED_VALIDATORS_PER_DAY_LIMIT_MANAGER_ROLE");

APPEARED_VALIDATORS_PER_DAY_LIMIT_MANAGER_ROLE()​

Granting this role allows updating the appearedValidatorsPerDayLimit value of the Limits List. See the setAppearedValidatorsPerDayLimit() method.

bytes32 public constant APPEARED_VALIDATORS_PER_DAY_LIMIT_MANAGER_ROLE =
    keccak256("APPEARED_VALIDATORS_PER_DAY_LIMIT_MANAGER_ROLE");

ANNUAL_BALANCE_INCREASE_LIMIT_MANAGER_ROLE()​

Granting this role allows updating the annualBalanceIncreaseBPLimit value of the Limits List. See the setAnnualBalanceIncreaseBPLimit() method.

bytes32 public constant ANNUAL_BALANCE_INCREASE_LIMIT_MANAGER_ROLE =
    keccak256("ANNUAL_BALANCE_INCREASE_LIMIT_MANAGER_ROLE")

SHARE_RATE_DEVIATION_LIMIT_MANAGER_ROLE()​

Granting this role allows updating the simulatedShareRateDeviationBPLimit value of the Limits List. See the setSimulatedShareRateDeviationBPLimit() method.

bytes32 public constant SHARE_RATE_DEVIATION_LIMIT_MANAGER_ROLE =
    keccak256("SHARE_RATE_DEVIATION_LIMIT_MANAGER_ROLE")

MAX_VALIDATOR_EXIT_REQUESTS_PER_REPORT_ROLE()​

Granting this role allows updating the maxValidatorExitRequestsPerReport value of the Limits List. See the setMaxExitRequestsPerOracleReport() method.

bytes32 public constant MAX_VALIDATOR_EXIT_REQUESTS_PER_REPORT_ROLE =
    keccak256("MAX_VALIDATOR_EXIT_REQUESTS_PER_REPORT_ROLE")

MAX_ITEMS_PER_EXTRA_DATA_TRANSACTION_ROLE()​

Granting this role allows updating the maxItemsPerExtraDataTransaction value of the Limits List. See the setMaxItemsPerExtraDataTransaction() method.

bytes32 public constant MAX_ITEMS_PER_EXTRA_DATA_TRANSACTION_ROLE =
    keccak256("MAX_ITEMS_PER_EXTRA_DATA_TRANSACTION_ROLE");

MAX_NODE_OPERATORS_PER_EXTRA_DATA_ITEM_ROLE()​

Granting this role allows updating the maxNodeOperatorsPerExtraDataItem value of the Limits List. See the setMaxNodeOperatorsPerExtraDataItem() method.

bytes32 public constant MAX_NODE_OPERATORS_PER_EXTRA_DATA_ITEM_ROLE =
    keccak256("MAX_NODE_OPERATORS_PER_EXTRA_DATA_ITEM_ROLE");

REQUEST_TIMESTAMP_MARGIN_MANAGER_ROLE()​

Granting this role allows updating the requestTimestampMargin value of the Limits List. See the setRequestTimestampMargin() method.

bytes32 public constant REQUEST_TIMESTAMP_MARGIN_MANAGER_ROLE
    = keccak256("REQUEST_TIMESTAMP_MARGIN_MANAGER_ROLE")

MAX_POSITIVE_TOKEN_REBASE_MANAGER_ROLE()​

Granting this role allows updating the maxPositiveTokenRebase value of the Limits List. See the setMaxPositiveTokenRebase() method.

bytes32 public constant MAX_POSITIVE_TOKEN_REBASE_MANAGER_ROLE =
    keccak256("MAX_POSITIVE_TOKEN_REBASE_MANAGER_ROLE")

SECOND_OPINION_MANAGER_ROLE()​

Granting this role allows updating the Second Opinion Oracle and clBalanceOraclesErrorUpperBPLimit value of the Limits List. See the setSecondOpinionOracleAndCLBalanceUpperMargin() method.

bytes32 public constant SECOND_OPINION_MANAGER_ROLE =
    keccak256("SECOND_OPINION_MANAGER_ROLE")

INITIAL_SLASHING_AND_PENALTIES_MANAGER_ROLE​

Granting this role allows updating the initialSlashingAmountPWei and inactivityPenaltiesAmountPWei values of the Limits List. See the setInitialSlashingAndPenaltiesAmount() method.

bytes32 public constant INITIAL_SLASHING_AND_PENALTIES_MANAGER_ROLE =
    keccak256("INITIAL_SLASHING_AND_PENALTIES_MANAGER_ROLE")

Events​

ExitedValidatorsPerDayLimitSet()​

Emits whenever the value of the LimitsList.exitedValidatorsPerDayLimit value is changed.

event ExitedValidatorsPerDayLimitSet(uint256 exitedValidatorsPerDayLimit);

Arguments​

  • exitedValidatorsPerDayLimit — new value of the LimitsList.exitedValidatorsPerDayLimit

AppearedValidatorsPerDayLimitSet()​

Emits whenever the value of the LimitsList.appearedValidatorsPerDayLimit value is changed.

event AppearedValidatorsPerDayLimitSet(uint256 appearedValidatorsPerDayLimit);

Arguments​

  • appearedValidatorsPerDayLimit — new value of the LimitsList.appearedValidatorsPerDayLimit

AnnualBalanceIncreaseBPLimitSet()​

Emits whenever the value of the LimitsList.annualBalanceIncreaseBPLimit value is changed.

event AnnualBalanceIncreaseBPLimitSet(uint256 annualBalanceIncreaseBPLimit);

Arguments​

  • annualBalanceIncreaseBPLimit — new value of the LimitsList.annualBalanceIncreaseBPLimit

SimulatedShareRateDeviationBPLimitSet()​

Emits whenever the value of the LimitsList.simulatedShareRateDeviationBPLimit value is changed.

event SimulatedShareRateDeviationBPLimitSet(uint256 simulatedShareRateDeviationBPLimit);

Arguments​

  • annualBalanceIncreaseBPLimit — new value of the LimitsList.simulatedShareRateDeviationBPLimit

MaxPositiveTokenRebaseSet()​

Emits whenever the value of the LimitsList.maxPositiveTokenRebase value is changed.

event MaxPositiveTokenRebaseSet(uint256 maxPositiveTokenRebase);

Arguments​

  • annualBalanceIncreaseBPLimit — new value of the LimitsList.maxPositiveTokenRebase

MaxValidatorExitRequestsPerReportSet()​

Emits whenever the value of the LimitsList.maxValidatorExitRequestsPerReport value is changed.

event MaxValidatorExitRequestsPerReportSet(uint256 maxValidatorExitRequestsPerReport);

Arguments​

  • maxValidatorExitRequestsPerReport — new value of the LimitsList.maxValidatorExitRequestsPerReport

MaxItemsPerExtraDataTransactionSet()​

Emits whenever the value of the LimitsList.maxItemsPerExtraDataTransaction value is changed.

event MaxItemsPerExtraDataTransactionSet(uint256 maxItemsPerExtraDataTransaction);

Arguments​

  • maxItemsPerExtraDataTransaction — new value of the LimitsList.maxItemsPerExtraDataTransaction

MaxNodeOperatorsPerExtraDataItemSet()​

Emits whenever the value of the LimitsList.maxNodeOperatorsPerExtraDataItem value is changed.

event MaxNodeOperatorsPerExtraDataItemSet(uint256 maxNodeOperatorsPerExtraDataItem);

Arguments​

  • maxNodeOperatorsPerExtraDataItem — new value of the LimitsList.maxNodeOperatorsPerExtraDataItem

RequestTimestampMarginSet()​

Emits whenever the value of the LimitsList.requestTimestampMargin value is changed.

event RequestTimestampMarginSet(uint256 requestTimestampMargin);

Arguments​

  • requestTimestampMargin — new value of the LimitsList.requestTimestampMargin

InitialSlashingAmountSet()​

Emits whenever the value of the LimitsList.initialSlashingAmountPWei value is changed.

event InitialSlashingAmountSet(uint256 initialSlashingAmountPWei);

Arguments​

  • initialSlashingAmountPWei — new value of the LimitsList.initialSlashingAmountPWei

InactivityPenaltiesAmountSet()​

Emits whenever the value of the LimitsList.InactivityPenaltiesAmountSet value is changed.

event InactivityPenaltiesAmountSet(uint256 inactivityPenaltiesAmountPWei);

Arguments​

  • inactivityPenaltiesAmountPWei — new value of the LimitsList.inactivityPenaltiesAmountPWei

CLBalanceOraclesErrorUpperBPLimitSet()​

Emits whenever the value of the LimitsList.clBalanceOraclesErrorUpperBPLimit value is changed.

event CLBalanceOraclesErrorUpperBPLimitSet(uint256 clBalanceOraclesErrorUpperBPLimit);

Arguments​

  • clBalanceOraclesErrorUpperBPLimit — new value of the LimitsList.clBalanceOraclesErrorUpperBPLimit

NegativeCLRebaseConfirmed()​

Emits whenever the checkAccountingOracleReport() finished with negative CL rebase check successfully with checking the Second Opinion Oracle.

event NegativeCLRebaseConfirmed(uint256 refSlot, uint256 clBalanceWei, uint256 withdrawalVaultBalance);

Arguments​

  • refSlot — the reference slot for the report checked.
  • clBalanceWei — the total Consensus Layer balance.
  • withdrawalVaultBalance — balance of the withdrawal vault.

NegativeCLRebaseAccepted()​

Emits whenever the checkAccountingOracleReport() finished with negative CL rebase check successfully without checking the Second Opinion Oracle.

event NegativeCLRebaseAccepted(uint256 refSlot, uint256 clTotalBalance, uint256 clBalanceDecrease, uint256 maxAllowedCLRebaseNegativeSum);

Arguments​

  • refSlot — the reference slot for the report checked.
  • clTotalBalance — the total Consensus Layer balance.
  • clBalanceDecrease — the decrease of Consensus Layer balance during report.
  • maxAllowedCLRebaseNegativeSum — the maximul accepted negative rebase balance change without second opinion.