PaymentHelper

Introduction

This contract helps estimate various payments in the Superform Protocol.

Core Concepts

Chains are initiated with multiple variables to help with the estimation process by the PROTOCOL_ADMIN_ROLE. There are all updatable by the EMERGENCY_ADMIN_ROLE.

Config Data Type

struct PaymentHelperConfig {
        address nativeFeedOracle;
        address gasPriceOracle;
        uint256 swapGasUsed;
        uint256 updateGasUsed;
        uint256 depositGasUsed;
        uint256 withdrawGasUsed;
        uint256 defaultNativePrice;
        uint256 defaultGasPrice;
        uint256 dstGasPerByte;
        uint256 ackGasCost;
        uint256 timelockCost;
        uint256 emergencyCost;
}
name
description

nativeFeedOracle

address of the Chainlink native token / USD price feed (i.e. AVAX/USD)

gasPriceOracle

address of the Chainlink gas price feed

swapGasUsed

uint256 estimated gas consumed to make a swap on the specified chain

updateGasUsed

uint256 estimated gas consumed in updating a payload on the chain

depositGasUsed

uint256 estimated gas consumed in calling vault.deposit() on that chain via Superform

withdrawGasUsed

uint256 estimated gas consumed in calling vault.redeem() on that chain via Superform

defaultNativePrice

uint256 price of the native token to use as fallback if Chainlink price feed not available

defaultGasPrice

uint256 average gas price to use as fallback if Chainlink gas feed not available

dstGasPerByte

uint256 gas per size of data

ackGasCost

uint256 gas cost for processing ack on the source chain

timelockCost

unit256 cost for processing time-locked payloads

emergencyCost

uint256 cost for processing withdrawals sent to the emergency queue if Forms are paused

addRemoteChain

This function allows for the addition of new chains, including setting same chain parameters, for use in estimation. 

function addRemoteChain(
        uint64 chainId_,
        PaymentHelperConfig calldata config_
   )
name
description

chainId_

uint64 of the EVM chain id

config_

Config Data Type

updateRemoteChain

This function allows the EmergencyAdmin to update any of the above parameters at any given time for more accurate estimations. An event is emitted when any of these variables are updated. 

function updateChainConfig(
        uint64 chainId_,
        uint256 configType_,
        bytes memory config_
    )
name
description

chainId

uint64 EVM chain id to update

configType_

uint256 from 1-11 for the config type 1 = native token price feed oracle 2 = gas price feed oracle 3 = cost to swap 4 = cost to update payloads 5 = cost to deposit into vaults 6 = cost to withdraw from vaults 7 = default native token price 8 = default, average gas price 9 = gas price per byte 10 = acknowledgment gas cost 11 = timelocked gas cost 12 = emergency queue gas cost

config_

Config Data Type

aERC20 Payments

updateRegisterAERC20Params

This function allows the EmergencyAdmin to adjust the cost required to create an an aERC20 position from a SuperPosition id. 

function updateRegisterAERC20Params(
        uint256 totalTransmuterFees_,
        bytes memory extraDataForTransmuter_
)
name
description

totalTransmuterFees_

unit256 fees to charge

extraDataForTransmuter_

bytes extraData required to broadcast the information needed to create aERC20 across chains

calculateRegisterTransmuterAMBData

This function allows anyone to see the fees and data required to create a ERC20 position from a SuperPosition id. 

function calculateRegisterTransmuterAMBData(
) external view returns (uint256 totalFees, bytes memory extraData)

AMB Fees

calculateAMBData

Function to return the cost and extraData needed for a given message sent through various AMBs supported on Superform. 

function calculateAMBData(
    uint64 dstChainId_,
    uint8[] calldata ambIds_,
    bytes memory message_
) external view returns (uint256 totalFees, bytes memory extraData);
name
description

dstChainId_

uint64 EVM chain ID of where to send the message

ambIds_

uint8 array of AMB ids to send the message through, can also send in just one AMB

message_

bytes encoded message to send

estimateAMBFees

Function to return the native tokens to be sent alongside the transaction in order for the transaction to be properly processed on destination. 

function estimateAMBFees(
        uint8[] memory ambIds_,
        uint64 dstChainId_,
        bytes memory message_,
        bytes[] memory extraData_
    );
name
description

ambIds_

uint8 array of AMB ids to send the message through, can also send in just one AMB

dstChainId_

uint64 EVM chain id of where to send the message

message_

bytes encoded message to send

extraData_

bytes AMB-specific data

Estimating Native Token Payments

For each type of SuperformRouter transaction (6 total combinations of cross-chain/same chain, single and multi-vault, and single and multi-destination) as found in Datatypes -> Functions, there is a specific estimation function.

These functions all return the following:

  • liqAmount: amount of native tokens contained in the liquidity request

  • srcAmount: total estimated gas expenditure on the source chain

  • dstAmount: total estimated gas expenditure on the destination chain

  • totalAmount: total amount of native tokens to be sent alongside transaction

estimateMultiDstMultiVault

This function returns the native token breakdown assuming a multiple destination, multiple vault deposit or withdrawal. 

function estimateMultiDstMultiVault(
        MultiDstMultiVaultStateReq calldata req_,
        bool isDeposit_
    )
name
description

req_

multiDstMultiVaultDeposit or multiDstMultiVaultWithdraw

isDeposit_

boolean of True if deposit, False if withdrawal

estimateMultiDstSingleVault

This function returns the native token breakdown assuming a multiple destination, single vault deposit or withdrawal. 

function estimateMultiDstSingleVault(
        MultiDstSingleVaultStateReq calldata req_,
        bool isDeposit_
    )
name
description

req_

multiDstSingleVaultDeposit or multiDstSingleVaultWithdraw

isDeposit_

boolean of True if deposit, False if withdrawal

estimateSingleXChainMultiVault

This function returns the native token breakdown assuming a single cross-chain transaction for a multiple vault deposit or withdrawal. 

function estimateSingleXChainMultiVault(
        SingleXChainMultiVaultStateReq calldata req_,
        bool isDeposit_
    )
name
description

req_

singleXChainMultiVaultDeposit or singleXChainMultiVaultWithdraw

isDeposit_

boolean of True if deposit, False if withdrawal

estimateSingleXChainSingleVault

This function returns the native token breakdown assuming a single cross-chain transaction for a single vault deposit or withdrawal. 

function estimateSingleXChainSingleVault(
        SingleXChainSingleVaultStateReq calldata req_,
        bool isDeposit
    )
name
description

req_

singleXChainSingleVaultDeposit or singleXChainSingleVaultWithdraw

isDeposit_

boolean of True if deposit, False if withdrawal

estimateSingleDirectSingleVault

This function returns the native token breakdown assuming a same-chain, single vault deposit or withdrawal. 

function estimateSingleDirectSingleVault(
        SingleDirectSingleVaultStateReq calldata req_,
        bool isDeposit_
    )
name
description

req_

singleDirectSingleVaultDeposit or singleDirectSingleVaultWithdraw

isDeposit_

boolean of True if deposit, False if withdrawal

estimateSingleDirectMultiVault

This function returns the native token breakdown assuming a same-chain, multiple vault deposit or withdrawal. 

function estimateSingleDirectMultiVault(
        SingleDirectMultiVaultStateReq calldata req_,
        bool isDeposit_
    )
name
description

req_

singleDirectMultiVaultDeposit or singleDirectMultiVaultWithdraw

isDeposit_

boolean of True if deposit, False if withdraw

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