PerpetualPositionManager

Prevents a contract from calling itself, directly or indirectly. Calling a nonReentrant function from another nonReentrant function is not supported. It is possible to prevent this from happening by making the nonReentrant function external, and make it call a private function that does the actual work.

Designed to prevent a view-only method from being re-entered during a call to a nonReentrant() state-changing method.

Reverts if not running in test mode.

Construct the PerpetualPositionManager.

Deployer of this contract should consider carefully which parties have ability to mint and burn the synthetic tokens referenced by _tokenAddress. This contract’s security assumes that no external accounts can mint new tokens, which could be used to steal all of this contract’s locked collateral. We recommend to only use synthetic token contracts whose sole Owner role (the role capable of adding & removing roles) is assigned to this contract, whose sole Minter role is assigned to this contract, and whose total supply is 0 prior to construction of this contract.

Parameters:

Transfers collateralAmount of collateralCurrency into the specified sponsor’s position.

Increases the collateralization level of a position after creation. This contract must be approved to spend at least collateralAmount of collateralCurrency.

Parameters:

Transfers collateralAmount of collateralCurrency into the caller’s position.

Increases the collateralization level of a position after creation. This contract must be approved to spend at least collateralAmount of collateralCurrency.

Parameters:

Transfers collateralAmount of collateralCurrency from the sponsor’s position to the sponsor.

Reverts if the withdrawal puts this position’s collateralization ratio below the global collateralization ratio. In that case, use requestWithdrawal. Might not withdraw the full requested amount to account for precision loss.

Parameters:

Starts a withdrawal request that, if passed, allows the sponsor to withdraw from their position.

The request will be pending for withdrawalLiveness, during which the position can be liquidated.

Parameters:

After a passed withdrawal request (i.e., by a call to requestWithdrawal and waiting withdrawalLiveness), withdraws positionData.withdrawalRequestAmount of collateral currency.

Might not withdraw the full requested amount in order to account for precision loss or if the full requested amount exceeds the collateral in the position (due to paying fees).

Cancels a pending withdrawal request.

Creates tokens by creating a new position or by augmenting an existing position. Pulls collateralAmount ` into the sponsor’s position and mints `numTokens of tokenCurrency.

This contract must have the Minter role for the tokenCurrency. Reverts if minting these tokens would put the position’s collateralization ratio below the global collateralization ratio. This contract must be approved to spend at least collateralAmount of collateralCurrency.

Parameters:

Burns numTokens of tokenCurrency and sends back the proportional amount of collateralCurrency.

Can only be called by a token sponsor. Might not redeem the full proportional amount of collateral in order to account for precision loss. This contract must be approved to spend at least numTokens of tokenCurrency. This contract must have the Burner role for the tokenCurrency.

Parameters:

Burns numTokens of tokenCurrency to decrease sponsors position size, without sending back collateralCurrency. This is done by a sponsor to increase position CR. Resulting size is bounded by minSponsorTokens.

Can only be called by token sponsor. This contract must be approved to spend numTokens of tokenCurrency. This contract must have the Burner role for the tokenCurrency.

Parameters:

If the contract is emergency shutdown then all token holders and sponsors can redeem their tokens or remaining collateral for underlying at the prevailing price defined by a DVM vote.

This burns all tokens from the caller of tokenCurrency and sends back the resolved settlement value of collateralCurrency. Might not redeem the full proportional amount of collateral in order to account for precision loss. This contract must be approved to spend tokenCurrency at least up to the caller’s full balance. This contract must have the Burner role for the tokenCurrency. Note that this function does not call the updateFundingRate modifier to update the funding rate as this function is only called after an emergency shutdown & there should be no funding rate updates after the shutdown.

Premature contract settlement under emergency circumstances.

Only the governor can call this function as they are permissioned within the FinancialContractAdmin. Upon emergency shutdown, the contract settlement time is set to the shutdown time. This enables withdrawal to occur via the settleEmergencyShutdown function.

Theoretically supposed to pay fees and move money between margin accounts to make sure they reflect the NAV of the contract. However, this functionality doesn’t apply to this contract.

This is supposed to be implemented by any contract that inherits AdministrateeInterface and callable only by the Governor contract. This method is therefore minimally implemented in this contract and does nothing.

Accessor method for a sponsor’s collateral.

This is necessary because the struct returned by the positions() method shows rawCollateral, which isn’t a user-readable value. This method accounts for pending regular fees that have not yet been withdrawn from this contract, for example if the lastPaymentTime != currentTime.

Parameters:

Accessor method for the total collateral stored within the PerpetualPositionManager.

This method takes 3 distinct actions: 1. Pays out regular fees. 2. If possible, resolves the outstanding funding rate proposal, pulling the result in and paying out the rewards. 3. Applies the prevailing funding rate over the most recent period.

Proposes a new funding rate. Proposer receives a reward if correct.

Parameters:

Pays UMA DVM regular fees (as a % of the collateral pool) to the Store contract.

These must be paid periodically for the life of the contract. If the contract has not paid its regular fee in a week or more then a late penalty is applied which is sent to the caller. If the amount of fees owed are greater than the pfc, then this will pay as much as possible from the available collateral. An event is only fired if the fees charged are greater than 0.

Fetch any regular fees that the contract has pending but has not yet paid. If the fees to be paid are more than the total collateral within the contract then the totalPaid returned is full contract collateral amount.

This returns 0 and exit early if there is no pfc, fees were already paid during the current block, or the fee rate is 0.

Gets the current profit from corruption for this contract in terms of the collateral currency.

This is equivalent to the collateral pool available from which to pay fees. Therefore, derived contracts are expected to implement this so that pay-fee methods can correctly compute the owed fees as a % of PfC.

Removes excess collateral balance not counted in the PfC by distributing it out pro-rata to all sponsors.

Sets the current time.

Will revert if not running in test mode.

Parameters:

Gets the current time. Will return the last time set in setCurrentTime if running in test mode. Otherwise, it will return the block timestamp.