Add expiry to storage requests

contracts/Marketplace.sol

@@ -51,6 +51,7 @@ contract Marketplace is Collateral {
     uint256 proofPeriod;
     uint256 proofTimeout;
     uint256 maxPrice;
+    uint256 expiry;
     bytes32 nonce;
   }
 

test/Marketplace.test.js

@@ -141,6 +141,7 @@ function requestId(request) {
         "uint256",
         "uint256",
         "uint256",
+        "uint256",
         "bytes32",
       ],
       requestToArray(request)
@@ -166,6 +167,7 @@ function requestToArray(request) {
     request.proofPeriod,
     request.proofTimeout,
     request.maxPrice,
+    request.expiry,
     request.nonce,
   ]
 }

test/examples.js

@@ -10,6 +10,7 @@ const exampleRequest = () => ({
   proofPeriod: 8, // 8 blocks ≈ 2 minutes
   proofTimeout: 4, // 4 blocks ≈ 1 minute
   maxPrice: 42,
+  expiry: now() + hours(1),
   nonce: hexlify(randomBytes(32)),
 })