f1c7e63923
* move gsn link * change underscore to dash * add content to gsn api ref * change link of GSN announcement * Update contracts/GSN/bouncers/GSNBouncerERC20Fee.sol Co-Authored-By: Nicolás Venturo <nicolas.venturo@gmail.com> * fix crossreference to gsn guide
42 lines
1.4 KiB
Solidity
42 lines
1.4 KiB
Solidity
pragma solidity ^0.5.0;
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import "./IRelayRecipient.sol";
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import "./GSNContext.sol";
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import "./bouncers/GSNBouncerBase.sol";
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import "./IRelayHub.sol";
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/*
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* @dev Base GSN recipient contract, adding the recipient interface and enabling
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* GSN support. Not all interface methods are implemented, derived contracts
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* must do so themselves.
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*/
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contract GSNRecipient is IRelayRecipient, GSNContext, GSNBouncerBase {
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/**
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* @dev Returns the RelayHub address for this recipient contract.
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*/
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function getHubAddr() public view returns (address) {
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return _relayHub;
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}
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/**
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* @dev This function returns the version string of the RelayHub for which
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* this recipient implementation was built. It's not currently used, but
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* may be used by tooling.
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*/
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// This function is view for future-proofing, it may require reading from
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// storage in the future.
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function relayHubVersion() public view returns (string memory) {
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this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
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return "1.0.0";
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}
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/**
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* @dev Triggers a withdraw of the recipient's deposits in RelayHub. Can
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* be used by derived contracts to expose the functionality in an external
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* interface.
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*/
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function _withdrawDeposits(uint256 amount, address payable payee) internal {
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IRelayHub(_relayHub).withdraw(amount, payee);
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}
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}
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