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feat(lazer): Update EVM example to attach fee for verification #39

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Merged
merged 5 commits into from
Dec 17, 2024
Merged

feat(lazer): Update EVM example to attach fee for verification #39

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1ceed17
Add fee but still failing
darunrs Dec 12, 2024
b8782d0
Fee correctly used
darunrs Dec 13, 2024
91f301c
Update function stub
darunrs Dec 13, 2024
b5fbbf9
Fix format issue
darunrs Dec 13, 2024
1a831f5
Pull fee from lazer contract
darunrs Dec 16, 2024
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2 changes: 1 addition & 1 deletion lazer/evm/lib/forge-std
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Submodule forge-std updated 4 files
+2 −2 src/StdCheats.sol
+152 −10 src/Vm.sol
+2 −3 test/StdChains.t.sol
+2 −2 test/Vm.t.sol
2 changes: 1 addition & 1 deletion lazer/evm/lib/openzeppelin-contracts-upgradeable
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Submodule openzeppelin-contracts-upgradeable updated 136 files
2 changes: 1 addition & 1 deletion lazer/evm/lib/pyth-crosschain
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Submodule pyth-crosschain updated 342 files
11 changes: 9 additions & 2 deletions lazer/evm/src/ExampleReceiver.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -7,15 +7,22 @@ import {PythLazerLib} from "pyth-lazer/PythLazerLib.sol";

contract ExampleReceiver {
PythLazer pythLazer;
uint256 verification_fee;
uint64 public price;
uint64 public timestamp;

constructor(address pythLazerAddress) {
pythLazer = PythLazer(pythLazerAddress);
verification_fee = pythLazer.verification_fee();
}

function updatePrice(bytes calldata update) public {
(bytes memory payload,) = pythLazer.verifyUpdate(update);
function updatePrice(bytes calldata update) public payable {
require(msg.value >= verification_fee, "Insufficient fee provided");
(bytes memory payload,) = pythLazer.verifyUpdate{value: verification_fee}(update);
if (msg.value > verification_fee) {
payable(msg.sender).transfer(msg.value - verification_fee);
}

(uint64 _timestamp, PythLazerLib.Channel channel, uint8 feedsLen, uint16 pos) =
PythLazerLib.parsePayloadHeader(payload);
console.log("timestamp %d", _timestamp);
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19 changes: 15 additions & 4 deletions lazer/evm/test/ExampleReceiver.t.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -12,19 +12,30 @@ contract ExampleReceiverTest is Test {
address trustedSigner = 0xEfEf56cD66896f6799A90A4e4d512C330c094e44;
console.log("trustedSigner %s", trustedSigner);

address lazer = makeAddr("lazer");
PythLazer pythLazer = new PythLazer();
pythLazer.initialize(address(0x1));
vm.prank(address(0x1));
pythLazer.initialize(lazer);

vm.prank(lazer);
pythLazer.updateTrustedSigner(trustedSigner, 3000000000000000);
uint256 fee = pythLazer.verification_fee();

ExampleReceiver receiver = new ExampleReceiver(address(pythLazer));
address consumer = makeAddr("consumer");
vm.deal(consumer, 10 wei);

ExampleReceiver receiver = new ExampleReceiver(address(pythLazer));
bytes memory update =
hex"2a22999a577d3cc0202197939d736bc0dcf71b9dde7b9470e4d16fa8e2120c0787a1c0d744d0c39cc372af4d1ecf2d09e84160ca905f3f597d20e2eec144a446a0459ad600001c93c7d3750006240af373971c01010000000201000000000005f5e100";
console.logBytes(update);

receiver.updatePrice(update);
vm.prank(consumer);
receiver.updatePrice{value: 5 * fee}(update);

assertEq(receiver.price(), 100000000);
assertEq(receiver.timestamp(), 1728479312975644);

assertEq(address(pythLazer).balance, fee);
assertEq(address(receiver).balance, 0);
assertEq(consumer.balance, 10 wei - fee);
}
}