alpha1

Signed-off-by: Logan Nguyen <[email protected]>
hashgraph · Apr 23, 2024 · 6179e9d · 6179e9d
1 parent e616d15
commit 6179e9d
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Showing 4 changed files with 47 additions and 3 deletions.
diff --git a/package-lock.json b/package-lock.json
diff --git a/packages/relay/src/lib/constants.ts b/packages/relay/src/lib/constants.ts
@@ -175,4 +175,10 @@ export default {
     NEW_HEADS: 'newHeads',
     NEW_PENDING_TRANSACTIONS: 'newPendingTransactions',
   },
+
+  // @source: Foundry related constants below can be found at https://github.com/Arachnid/deterministic-deployment-proxy?tab=readme-ov-file#latest-outputs
+  DETERMINISTIC_DEPLOYER_TRANSACTION:
+    '0xf8a58085174876e800830186a08080b853604580600e600039806000f350fe7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe03601600081602082378035828234f58015156039578182fd5b8082525050506014600cf31ba02222222222222222222222222222222222222222222222222222222222222222a02222222222222222222222222222222222222222222222222222222222222222',
+  DETERMINISTIC_DEPLOYMENT_SIGNER: '0x3fab184622dc19b6109349b94811493bf2a45362',
+  DETERMINISTIC_PROXY_CONTRACT: '0x4e59b44847b379578588920ca78fbf26c0b4956c',
 };
diff --git a/packages/relay/src/lib/precheck.ts b/packages/relay/src/lib/precheck.ts
@@ -130,7 +130,13 @@ export class Precheck {
     const requestIdPrefix = formatRequestIdMessage(requestId);
     const minGasPrice = BigInt(gasPrice);
     const txGasPrice = tx.gasPrice || tx.maxFeePerGas! + tx.maxPriorityFeePerGas!;
-    const passes = txGasPrice >= minGasPrice;
+
+    // **notice: Pass gasPrice precheck if txGasPrice is greater than the minimum network's gas price value,
+    //          OR if the transaction is the deterministic deployment transaction (a special case).
+    // **explanation: The deterministic deployment transaction is pre-signed with a gasPrice value of only 10 hbars,
+    //                which is lower than the minimum gas price value in all Hedera network environments. Therefore,
+    //                this special case is exempt from the precheck in the Relay, and the gas price logic will be resolved at the Services level.
+    const passes = txGasPrice >= minGasPrice || Precheck.isDeterministicDeploymentTransaction(tx);
 
     if (!passes) {
       if (constants.GAS_PRICE_TINY_BAR_BUFFER) {
@@ -152,6 +158,15 @@ export class Precheck {
     }
   }
 
+  /**
+   * Checks if a transaction is the deterministic deployment transaction.
+   * @param {Transaction} tx - The transaction to check.
+   * @returns {boolean} Returns true if the transaction is the deterministic deployment transaction, otherwise false.
+   */
+  static isDeterministicDeploymentTransaction(tx: Transaction): boolean {
+    return tx.serialized === constants.DETERMINISTIC_DEPLOYER_TRANSACTION;
+  }
+
   /**
    * @param tx
    * @param callerName

diff --git a/packages/relay/tests/lib/precheck.spec.ts b/packages/relay/tests/lib/precheck.spec.ts
@@ -247,6 +247,31 @@ describe('Precheck', async function () {
       expect(result).to.not.exist;
     });
 
+    it('should recognize if a signed raw transaction is the deterministic deployment transaction', async () => {
+      const parsedDeterministicDeploymentTransaction = ethers.Transaction.from(
+        constants.DETERMINISTIC_DEPLOYER_TRANSACTION,
+      );
+
+      expect(Precheck.isDeterministicDeploymentTransaction(parsedDeterministicDeploymentTransaction)).to.be.true;
+    });
+
+    it('Should recognize if a signed raw transaction is NOT the deterministic deployment transaction', async () => {
+      expect(Precheck.isDeterministicDeploymentTransaction(parsedtxWithChainId0x0)).to.be.false;
+      expect(Precheck.isDeterministicDeploymentTransaction(parsedTxWithMatchingChainId)).to.be.false;
+      expect(Precheck.isDeterministicDeploymentTransaction(parsedTxWithNonMatchingChainId)).to.be.false;
+    });
+
+    it('should pass for gas price if the transaction is the deterministic deployment transaction', async function () {
+      const parsedDeterministicDeploymentTransaction = ethers.Transaction.from(
+        constants.DETERMINISTIC_DEPLOYER_TRANSACTION,
+      );
+      const result = precheck.gasPrice(
+        parsedDeterministicDeploymentTransaction,
+        100 * constants.TINYBAR_TO_WEIBAR_COEF,
+      );
+      expect(result).to.not.exist;
+    });
+
     it('should not pass for gas price not enough', async function () {
       const minGasPrice = 1000 * constants.TINYBAR_TO_WEIBAR_COEF;
       try {