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OracleWithValidation

Git Source - Generated with forge doc

Inherits: IOracleWithValidation, Ownable2Step

Title: OracleWithValidation

Oracle that checks the deviation between a primary and a validation oracle.

Conforms to the Morpho IOracle interface.

The primary oracle is always used for the price, but price() reverts if the deviation from the validation oracle exceeds the threshold.

The deployer must ensure VALIDATION_ORACLE returns a well-formed (uint256) payload. Malformed returndata (length != 32) bypasses try/catch and reverts price(); excess returndata is truncated to the first 32 bytes.

Pausing validation and then renouncing ownership permanently locks the wrapper into primary-only mode. To make the validated configuration immutable, renounce ownership while validationCheckPaused is false.

The deviation is scaled by the primary price, so a threshold d allows up to d / (1 - d) overpricing relative to the validation oracle (e.g. 5% configured allows ~5.26% effective).

A validation oracle that returns 0 instead of reverting is not caught by the try/catch: against a nonzero primary price the deviation check fails, so price() reverts even when REVERT_ON_VALIDATION_ORACLE_FAILURE is false.

price() can return 0 to Morpho Markets: the primary oracle returns 0 while the validation check is paused, the validation price is also 0, or the validation call reverts while REVERT_ON_VALIDATION_ORACLE_FAILURE is false.

When REVERT_ON_VALIDATION_ORACLE_FAILURE is true, pausing the validation check is the only way to keep price() working if the validation oracle permanently breaks; renouncing ownership removes that option.

State Variables​

PRIMARY_ORACLE​

IOracle public immutable PRIMARY_ORACLE

VALIDATION_ORACLE​

IOracle public immutable VALIDATION_ORACLE

MAX_ORACLE_DEVIATION​

uint256 public immutable MAX_ORACLE_DEVIATION

REVERT_ON_VALIDATION_ORACLE_FAILURE​

Whether price() reverts when the validation oracle call reverts.

When false, the primary price is returned unchecked instead.

bool public immutable REVERT_ON_VALIDATION_ORACLE_FAILURE

validationCheckPaused​

bool public validationCheckPaused

Functions​

constructor​

constructor(
    IOracle primaryOracle,
    IOracle validationOracle,
    uint256 maxOracleDeviation,
    bool revertOnValidationOracleFailure,
    address initialOwner
) Ownable(initialOwner);

Parameters

NameTypeDescription
primaryOracleIOracle
validationOracleIOracle
maxOracleDeviationuint256Max deviation between the two oracle prices, as a WAD fraction (1e18 = 100%).
revertOnValidationOracleFailurebool
initialOwneraddress

price​

function price() external view returns (uint256);

pauseValidationCheck​

Pauses validation: price() returns the primary price unchecked until unpauseValidationCheck is called.

Only callable by the owner. Reverts if already paused.

function pauseValidationCheck() external onlyOwner;

unpauseValidationCheck​

Unpauses the validation check.

Only callable by the owner. Reverts if not paused.

function unpauseValidationCheck() external onlyOwner;