PermissionedBridge
Inherits: Vault
Manages bridge operations with manually set operator weights
Extends Vault for bridging functionality
State Variables
operatorResponses
Tracks bridge requests that this operator has responded to once to avoid duplications
Double attestations would technically be valid and allow operators to recursively call until funds are released
mapping(address => mapping(uint256 => bool)) public operatorResponses;
bridgeRequestWeights
Tracks the total operator weight attested to a bridge request
Helpful for determining when enough attestations have been collected to release funds.
mapping(uint256 => uint256) public bridgeRequestWeights;
operatorWeights
Maps operator addresses to their respective weights
Temporary solution for illustrative purposes on non-mainnet chains
mapping(address => uint256) public operatorWeights;
Functions
constructor
Initializes the contract with the necessary parameters
constructor(uint256 _crankGasCost, uint256 _AVSReward, uint256 _bridgeFee, string memory _name, string memory _version)
Vault(_crankGasCost, _AVSReward, _bridgeFee, _name, _version);
Parameters
| Name | Type | Description |
|---|---|---|
_crankGasCost | uint256 | The estimated gas cost for calling release funds, used to calculate rebate and incentivize users to call |
_AVSReward | uint256 | The total reward for AVS attestation |
_bridgeFee | uint256 | The total fee charged to the user for bridging |
_name | string | The name of the contract, used for EIP-712 domain construction |
_version | string | The version of the contract, used for EIP-712 domain construction |
onlyOperator
Ensures that only operators with non-zero weight can call the function
modifier onlyOperator();
publishAttestation
Publishes an attestation for a bridge request
function publishAttestation(bytes memory attestation, uint256 _bridgeRequestId) public nonReentrant onlyOperator;
Parameters
| Name | Type | Description |
|---|---|---|
attestation | bytes | The signed attestation |
_bridgeRequestId | uint256 | The ID of the bridge request |
_releaseFunds
Releases funds to the destination address
function _releaseFunds(bytes memory data) public override nonReentrant;
Parameters
| Name | Type | Description |
|---|---|---|
data | bytes | The bridge request data and signatures |
releaseFunds
Releases funds to the destination address with typed data for ABI construction
function releaseFunds(bytes[] memory signatures, Structs.BridgeRequestData memory data) public nonReentrant;
Parameters
| Name | Type | Description |
|---|---|---|
signatures | bytes[] | The signatures of the operators attesting to the bridge request |
data | Structs.BridgeRequestData | The bridge request data |
operatorHasMinimumWeight
Checks if the operator has the minimum required weight
function operatorHasMinimumWeight(address operator) public view returns (bool);
Parameters
| Name | Type | Description |
|---|---|---|
operator | address | The address of the operator |
Returns
| Name | Type | Description |
|---|---|---|
<none> | bool | True if the operator has the minimum weight, false otherwise |
getOperatorWeight
Gets the weight of an operator
function getOperatorWeight(address operator) public view returns (uint256);
Parameters
| Name | Type | Description |
|---|---|---|
operator | address | The address of the operator |
Returns
| Name | Type | Description |
|---|---|---|
<none> | uint256 | The weight of the operator |
setOperatorWeight
Sets the weight of an operator
function setOperatorWeight(address operator, uint256 weight) public onlyOwner;
Parameters
| Name | Type | Description |
|---|---|---|
operator | address | The address of the operator |
weight | uint256 | The new weight of the operator |
receive
Fallback function to receive ether
receive() external payable;