OCR_Modular.sol

OCR -> On-Chain Redemption

Introduction

OCR stands for "On-Chain Redemption".

This locker is responsible for handling redemptions of tranche tokens to stablecoins.

State Variables

Type	Name	Description
address	GBL	The ZivoeGlobals contract.
address	stablecoin	The stablecoin redeemable in this contract.
uint256	epoch	The timestamp of current epoch.
uint256	epochDiscountJunior	Redemption discount for $zJTT (junior tranche).
uint256	epochDiscountSenior	Redemption discount for $zSTT (senior tranche).
uint256	redemptionsAllowedJunior	Redemptions allowed for $zJTT (junior tranche).
uint256	redemptionsAllowedSenior	Redemptions allowed for $zSTT (senior tranche).
uint256	redemptionsFeeBIPS	Fee for redemptions (in BIPS).
uint256	redemptionsQueuedJunior	Redemptions queued for $zJTT (junior tranche).
uint256	redemptionsQueuedSenior	Redemptions queued for $zSTT (senior tranche).
uint256	requestCounter	Increments with new requests.
uint256	BIPS	Private constant, 10000
uint256	RAY	Private constant, 10**27
mapping(uint256 => Request)	requests	Mapping of all requests.

Request

This struct stores information for redemptions requests.

Type	Variable	Description
address	account	The account making the request
uint256	amount	The amount of the request ($zSTT and $zJTT)
uint256	unlocks	The timestamp after which this request may be processed
bool	seniorElseJunior	The tranche this request is for (true = Senior, false = Junior)

Sections

Read Functions

• canPush() - Permission for owner to call pushToLocker(). See ZivoeLocker.sol

• canPull() - Permission for owner to call pullFromLocker(). See ZivoeLocker.sol

• canPullPartial() - Permission for owner to call pullFromLockerPartial(). See ZivoeLocker.sol

Write Functions

• pushToLocker() - This pulls capital from the DAO.

• pullFromLocker() - Migrates entire ERC20 balance from locker to owner().

• pullFromLockerPartial() - Migrates specific amount of ERC20 from locker to owner().

• createRequest() - Creates a redemptions request.

• destroyRequest() - Destroys a redemption request.

• processRequest() - Processes a redemption request.

• tickEpoch() - This function will start a new epoch.

• updateRedemptionsFeeBIPS() - Updates the state variable "redemptionFeeBips".

Events

• EpochTicked()

• RequestCreated()

• RequestDestroyed()

• RequestProcessed()

• UpdatedRedemptionsFeeBIPS()

Read Functions

canPush()

Permission for owner to call pushToLocker(). See ZivoeLocker.sol

 function canPush() public override pure returns (bool) { return true; }

canPull()

Permission for owner to call pullFromLocker(). See ZivoeLocker.sol

function canPull() public override pure returns (bool) { return true; }

canPullPartial()

Permission for owner to call pullFromLockerPartial(). See ZivoeLocker.sol

function canPullPartial() public override pure returns (bool) { return true; }

Write Functions

pushToLocker()

This pulls capital from the DAO.

function pushToLocker(
    address asset, 
    uint256 amount, 
    bytes calldata data
) external override _tickEpoch onlyOwner nonReentrant;

Type	Name	Description
address	asset	The asset to pull from the DAO.
uint256	amount	The amount of asset to pull from the DAO.
bytes	data	Accompanying transaction data.

pullFromLocker()

Migrates entire ERC20 balance from locker to owner().

function pullFromLocker(address asset, bytes calldata data) external;

Type	Name	Description
address	asset	The asset to migrate.
bytes	data	Accompanying transaction data.

pullFromLockerPartial()

Migrates specific amount of ERC20 from locker to owner().

function pullFromLockerPartial(
    address asset, 
    uint256 amount, 
    bytes calldata data
) external;

Type	Name	Description
address	asset	The asset to migrate.
uint256	amount	The amount of "asset" to migrate.
bytes	data	Accompanying transaction data.

createRequest()

Creates a redemptions request.

function createRequest(
    uint256 amount, 
    bool seniorElseJunior
) external _tickEpoch nonReentrant;

Type	Name	Description
uint256	amount	The amount to deposit for the request.
uint256	seniorElseJunior	he tranche to deposit for (true = Senior, false = Junior).

Emits the RequestCreated() event

destroyRequest()

Destroys a redemption request.

function destroyRequest(uint256 id) external _tickEpoch nonReentrant;

Type	Name	Description
uint256	id	The ID of the request to destroy.

Emits the RequestDestroyed() event

processRequest()

Processes a redemption request.

function processRequest(uint256 id) external _tickEpoch nonReentrant;

Type	Name	Description
uint256	id	The ID of the request to process.

Emits the RequestProcessed() event

tickEpoch()

This function will start a new epoch.

function tickEpoch() public;

Emits the EpochTicked() event

updateRedemptionsFeeBIPS()

Updates the state variable "redemptionFeeBips".

function updateRedemptionsFeeBIPS(
    uint256 _redemptionsFeeBIPS
) external _tickEpoch;

Type	Name	Description
uint256	_redemptionsFee	The new value for redemptionsFeeBIPS (in BIPS).

Emits the UpdatedRedemptionsFeeBIPS() event

Events

EpochTicked()

Emitted during tickEpoch()

event EpochTicked(
    uint256 epoch, 
    uint256 redemptionsAllowedJunior, 
    uint256 redemptionsAllowedSenior,
    uint256 epochDiscountJunior, 
    uint256 epochDiscountSenior
);

Type	Indexed	Name	Description
uint256	False	epoch	The timestamp of the start of this epoch.
uint256	False	redemptionsAllowedJunior	Redemptions allowed for $zJTT (junior tranche) for this epoch.
uint256	False	redemptionsAllowedSenior	Redemptions allowed for $zSTT (senior tranche) for this epoch.
uint256	False	epochDiscountJunior	Redemption discount for $zJTT (junior tranche) for this epoch.
uint256	False	epochDiscountSenior	Redemption discount for $zSTT (senior tranche) for this epoch.

RequestCreated()

Emitted during createRequest()

event RequestCreated(
    uint256 indexed id, 
    address indexed account, 
    uint256 amount, 
    bool indexed seniorElseJunior
);

Type	Indexed	Name	Description
uint256	True	id	The ID of the request created.
address	True	account	The account creating a request.
uint256	False	amount	The amount deposited for the request ($zJTT or $zSTT).
bool	True	seniorElseJunior	The tranche deposited for (true = Senior, false = Junior).

RequestDestroyed()

Emitted during destroyRequest()

event RequestDestroyed(
    uint256 indexed id, 
    address indexed account, 
    uint256 amount, 
    bool indexed seniorElseJunior
);

Type	Indexed	Name	Description
uint256	True	id	The ID of the request destroyed.
address	True	account	The account destroying the request.
uint256	False	amount	The amount returned from the request ($zJTT or $zSTT).
bool	True	seniorElseJunior	The tranche deposited for (true = Senior, false = Junior).

RequestProcessed()

Emitted during processRequest()

event RequestProcessed(
    uint256 indexed id, 
    address indexed account, 
    uint256 burnAmount, 
    uint256 redeemAmount, 
    bool indexed seniorElseJunior
);

Type	Indexed	Name	Description
uint256	True	id	The ID of the request processed.
address	True	account	The account receiving the redeemed tokens.
uint256	False	burnAmount	The amount of tranche tokens ($zJTT or $zSTT) burned from the request.
uint256	False	redeemAmount	The amount reddeemed from the processed request.
bool	True	seniorElseJunior	The tranche deposited for (true = Senior, false = Junior).

UpdatedRedemptionsFeeBIPS()

Emitted during #updateredemptionsfee

event UpdatedOCTYDL(address indexed newOCT, address indexed oldOCT);

Type	Indexed	Name	Description
address	True	newOCT	The new OCT_YDL contract.
address	True	oldOCT	The old OCT_YDL contract.