Job Interface
Some contracts require external event execution, an example for this is the harvest() function in the yearn ecosystem, or the update(address,address) function in the uniquote ecosystem. These normally require a restricted access control list, however these can be difficult for fully decentralized projects to manage, as they lack devops infrastructure.
These interfaces can be broken down into two types, no risk delta (something like update(address,address) in uniquote, which needs to be executed, but not risk to execution), and harvest() in yearn, which can be exploited by malicious actors by front-running deposits.
For no, or low risk executions, you can simply call Keep3r.isKeeper(msg.sender) which will let you know if the given actor is a keeper in the network.
For high, sensitive, or critical risk executions, you can specify a minimum bond, minimum jobs completed, and minimum Keeper age required to execute this function. Based on these 3 limits you can define your own trust ratio on these keepers.
So a function definition would look as follows;
function execute() external {
require(Keep3r.isKeeper(msg.sender), "Keep3r not allowed");
}
At the end of the call, you simply need to call workReceipt(address,uint) to finalize the execution for the keeper network. In the call you specify the keeper being rewarded, and the amount of KPR you would like to award them with. This is variable based on what you deem is a fair reward for the work executed.
Example Keep3rJob
interface UniOracleFactory {
function update(address tokenA, address tokenB) external;
}
interface Keep3r {
function isKeeper(address) external view returns (bool);
function workReceipt(address keeper, uint amount) external;
}
contract Keep3rJob {
UniOracleFactory constant JOB = UniOracleFactory(0x61da8b0808CEA5281A912Cd85421A6D12261D136);
Keep3r constant KPR = Keep3r(0x1cEB5cB57C4D4E2b2433641b95Dd330A33185A44);
function update(address tokenA, address tokenB) external {
require(KPR.isKeeper(msg.sender), "Keep3rJob::update: not a valid keeper");
JOB.update(tokenA, tokenB);
KPR.workReceipt(msg.sender, 1e18);
