ChronicleOracle calculates staleness incorrectly

[totomanov]

The IChronicle interface returns uint256 age, the timestamp of the price update, while the adapter code interprets it as staleness.

Location

euler-price-oracle/src/adapter/chronicle/ChronicleOracle.sol

Lines 55 to 57 in afb32ee

 (uint256 price, uint256 age) = IChronicle(feed).readWithAge(); 
 if (price == 0) revert Errors.PriceOracle_InvalidAnswer(); 
 if (age > maxStaleness) revert Errors.PriceOracle_TooStale(age, maxStaleness); 

Fix

uint256 staleness = block.timestamp - age;
if (staleness > maxStaleness) revert Errors.PriceOracle_TooStale(staleness, maxStaleness); 

For example, see this poke transaction, which sets age to 1710916503.