FeePoolEternalStorage¶
Description¶
FeePoolEternalStorage is currently used only to store the last fee withdrawal timestamp for each address. See FeePool._claimFees
and FeePool.feesByPeriod
for details of what this information is used for.
This contract is just wrapper around EternalStorage with a limited setup period and a setup function that sets each account's last fee withdrawal times.
Source: FeePoolEternalStorage.sol
Architecture¶
Inheritance Graph¶
Variables¶
LAST_FEE_WITHDRAWAL
¶
This constant is an arbitrary string to be used to access the correct slot in the eternal storage uint
map where an account's last withdrawal time is kept.
This is hashed together with the address to obtain the correct key. Its value must be the same as FeePool.LAST_FEE_WITHDRAWAL
.
Type: bytes32 const
Value: "last_fee_withdrawal"
Functions¶
constructor
¶
Initialises the inherited EternalStorage
instance, and sets a limited setup period of six weeks.
Details
Signature
constructor(address _owner, address _feePool) public
Superconstructors
importFeeWithdrawalData
¶
This is a helper to import fee withdrawal information from a previous version of the system during the setup period.
Details
Signature
importFeeWithdrawalData(address[] accounts, uint[] feePeriodIDs) external
Modifiers
Preconditions
- The length of the accounts and feePeriodIDs arrays must be equal, otherwise the transaction reverts.