Remove most info from relayed L1->GW priority ops

l1-contracts/contracts/bridgehub/Bridgehub.sol

@@ -22,7 +22,6 @@ import {BridgehubL2TransactionRequest, L2Message, L2Log, TxStatus} from "../comm
 import {AddressAliasHelper} from "../vendor/AddressAliasHelper.sol";
 import {IMessageRoot} from "./IMessageRoot.sol";
 import {ISTMDeploymentTracker} from "./ISTMDeploymentTracker.sol";
-import {L2CanonicalTransaction} from "../common/Messaging.sol";
 import {HyperchainLimitReached, Unauthorized, STMAlreadyRegistered, STMNotRegistered, ZeroChainId, ChainIdTooBig, SharedBridgeNotSet, BridgeHubAlreadyRegistered, AddressTooLow, MsgValueMismatch, WrongMagicValue, ZeroAddress} from "../common/L1ContractErrors.sol";
 
 /// @author Matter Labs
@@ -567,25 +566,16 @@ contract Bridgehub is IBridgehub, ReentrancyGuard, Ownable2StepUpgradeable, Paus
 
     /// @notice Used to forward a transaction on the gateway to the chains mailbox (from L1).
     /// @param _chainId the chainId of the chain
-    /// @param _transaction the transaction to be forwarded
-    /// @param _factoryDeps the factory dependencies for the transaction
     /// @param _canonicalTxHash the canonical transaction hash
     /// @param _expirationTimestamp the expiration timestamp for the transaction
     function forwardTransactionOnGateway(
         uint256 _chainId,
-        L2CanonicalTransaction calldata _transaction,
-        bytes[] calldata _factoryDeps,
         bytes32 _canonicalTxHash,
         uint64 _expirationTimestamp
     ) external override onlySettlementLayerRelayedSender {
         require(L1_CHAIN_ID != block.chainid, "BH: not in sync layer mode");
         address hyperchain = hyperchainMap.get(_chainId);
-        IZkSyncHyperchain(hyperchain).bridgehubRequestL2TransactionOnGateway(
-            _transaction,
-            _factoryDeps,
-            _canonicalTxHash,
-            _expirationTimestamp
-        );
+        IZkSyncHyperchain(hyperchain).bridgehubRequestL2TransactionOnGateway(_canonicalTxHash, _expirationTimestamp);
     }
 
     /// @notice forwards function call to Mailbox based on ChainId

l1-contracts/contracts/bridgehub/IBridgehub.sol

@@ -3,7 +3,7 @@
 pragma solidity ^0.8.21;
 
 import {IL1AssetRouter} from "../bridge/interfaces/IL1AssetRouter.sol";
-import {L2CanonicalTransaction, L2Message, L2Log, TxStatus} from "../common/Messaging.sol";
+import {L2Message, L2Log, TxStatus} from "../common/Messaging.sol";
 import {IL1AssetHandler} from "../bridge/interfaces/IL1AssetHandler.sol";
 import {ISTMDeploymentTracker} from "./ISTMDeploymentTracker.sol";
 import {IMessageRoot} from "./IMessageRoot.sol";
@@ -206,8 +206,6 @@ interface IBridgehub is IL1AssetHandler {
 
     function forwardTransactionOnGateway(
         uint256 _chainId,
-        L2CanonicalTransaction calldata _transaction,
-        bytes[] calldata _factoryDeps,
         bytes32 _canonicalTxHash,
         uint64 _expirationTimestamp
     ) external;

l1-contracts/contracts/state-transition/chain-deps/facets/Getters.sol

@@ -107,11 +107,7 @@ contract GettersFacet is ZkSyncHyperchainBase, IGetters, ILegacyGetters {
 
     /// @inheritdoc IGetters
     function getTotalPriorityTxs() external view returns (uint256) {
-        if (s.priorityQueue.getFirstUnprocessedPriorityTx() >= s.priorityTree.startIndex) {
-            return s.priorityTree.getTotalPriorityTxs();
-        } else {
-            return s.priorityQueue.getTotalPriorityTxs();
-        }
+        return _getTotalPriorityTxs();
     }
 
     /// @inheritdoc IGetters

l1-contracts/contracts/state-transition/chain-deps/facets/Mailbox.sol

@@ -366,8 +366,6 @@
     /// @inheritdoc IMailbox
     function requestL2TransactionToGatewayMailbox(
         uint256 _chainId,
-        L2CanonicalTransaction calldata _transaction,
-        bytes[] calldata _factoryDeps,
         bytes32 _canonicalTxHash,
         uint64 _expirationTimestamp
     ) external override onlyL1 returns (bytes32 canonicalTxHash) {
@@ -379,8 +377,6 @@
 
         BridgehubL2TransactionRequest memory wrappedRequest = _wrapRequest({
             _chainId: _chainId,
-            _transaction: _transaction,
-            _factoryDeps: _factoryDeps,
             _canonicalTxHash: _canonicalTxHash,
             _expirationTimestamp: _expirationTimestamp
         });
@@ -389,25 +385,22 @@
 
     /// @inheritdoc IMailbox
     function bridgehubRequestL2TransactionOnGateway(
-        L2CanonicalTransaction calldata _transaction,
-        bytes[] calldata _factoryDeps,
         bytes32 _canonicalTxHash,
         uint64 _expirationTimestamp
     ) external override onlyBridgehub {
-        _writePriorityOp(_transaction, _factoryDeps, _canonicalTxHash, _expirationTimestamp);
+        _writePriorityOpHash(_canonicalTxHash, _expirationTimestamp);
+        emit NewRelayedPriorityTransaction(_getTotalPriorityTxs(), _canonicalTxHash, _expirationTimestamp);
     }
 
     function _wrapRequest(
         uint256 _chainId,
-        L2CanonicalTransaction calldata _transaction,
-        bytes[] calldata _factoryDeps,
         bytes32 _canonicalTxHash,
         uint64 _expirationTimestamp
     ) internal view returns (BridgehubL2TransactionRequest memory) {
         // solhint-disable-next-line func-named-parameters
         bytes memory data = abi.encodeCall(
             IBridgehub(s.bridgehub).forwardTransactionOnGateway,
-            (_chainId, _transaction, _factoryDeps, _canonicalTxHash, _expirationTimestamp)
+            (_chainId, _canonicalTxHash, _expirationTimestamp)
         );
         return
             BridgehubL2TransactionRequest({
@@ -479,7 +472,7 @@
         // Change the sender address if it is a smart contract to prevent address collision between L1 and L2.
         // Please note, currently ZKsync address derivation is different from Ethereum one, but it may be changed in the future.
         // slither-disable-next-line tx-origin
         if (request.sender != tx.origin) {
             request.sender = AddressAliasHelper.applyL1ToL2Alias(request.sender);
         }
 
@@ -494,8 +487,6 @@
             // slither-disable-next-line unused-return
             IMailbox(s.settlementLayer).requestL2TransactionToGatewayMailbox({
                 _chainId: s.chainId,
-                _transaction: transaction,
-                _factoryDeps: _params.request.factoryDeps,
                 _canonicalTxHash: canonicalTxHash,
                 _expirationTimestamp: _params.expirationTimestamp
             });
@@ -571,6 +562,14 @@
         bytes32 _canonicalTxHash,
         uint64 _expirationTimestamp
     ) internal {
+        _writePriorityOpHash(_canonicalTxHash, _expirationTimestamp);
+
+        // Data that is needed for the operator to simulate priority queue offchain
+        // solhint-disable-next-line func-named-parameters
+        emit NewPriorityRequest(_transaction.nonce, _canonicalTxHash, _expirationTimestamp, _transaction, _factoryDeps);
+    }
+
+    function _writePriorityOpHash(bytes32 _canonicalTxHash, uint64 _expirationTimestamp) internal {
         if (s.priorityTree.startIndex > s.priorityQueue.getFirstUnprocessedPriorityTx()) {
             s.priorityQueue.pushBack(
                 PriorityOperation({
@@ -581,10 +580,6 @@
             );
         }
         s.priorityTree.push(_canonicalTxHash);
-
-        // Data that is needed for the operator to simulate priority queue offchain
-        // solhint-disable-next-line func-named-parameters
-        emit NewPriorityRequest(_transaction.nonce, _canonicalTxHash, _expirationTimestamp, _transaction, _factoryDeps);
     }
 
     /// @notice Hashes the L2 bytecodes and returns them in the format in which they are processed by the bootloader

l1-contracts/contracts/state-transition/chain-deps/facets/ZkSyncHyperchainBase.sol

@@ -4,13 +4,17 @@ pragma solidity 0.8.24;
 
 import {ZkSyncHyperchainStorage} from "../ZkSyncHyperchainStorage.sol";
 import {ReentrancyGuard} from "../../../common/ReentrancyGuard.sol";
-
+import {PriorityQueue} from "../../libraries/PriorityQueue.sol";
+import {PriorityTree} from "../../libraries/PriorityTree.sol";
 import {Unauthorized} from "../../../common/L1ContractErrors.sol";
 
 /// @title Base contract containing functions accessible to the other facets.
 /// @author Matter Labs
 /// @custom:security-contact [email protected]
 contract ZkSyncHyperchainBase is ReentrancyGuard {
+    using PriorityQueue for PriorityQueue.Queue;
+    using PriorityTree for PriorityTree.Tree;
+
     // slither-disable-next-line uninitialized-state
     ZkSyncHyperchainStorage internal s;
 
@@ -64,4 +68,12 @@ contract ZkSyncHyperchainBase is ReentrancyGuard {
         }
         _;
     }
+
+    function _getTotalPriorityTxs() internal view returns (uint256) {
+        if (s.priorityQueue.getFirstUnprocessedPriorityTx() >= s.priorityTree.startIndex) {
+            return s.priorityTree.getTotalPriorityTxs();
+        } else {
+            return s.priorityQueue.getTotalPriorityTxs();
+        }
+    }
 }

l1-contracts/contracts/state-transition/chain-interfaces/IMailbox.sol

@@ -101,23 +101,14 @@ interface IMailbox is IZkSyncHyperchainBase {
     ) external returns (bytes32 canonicalTxHash);
 
     /// @dev On the Gateway the chain's mailbox receives the tx from the bridgehub.
-    function bridgehubRequestL2TransactionOnGateway(
-        L2CanonicalTransaction calldata _transaction,
-        bytes[] calldata _factoryDeps,
-        bytes32 _canonicalTxHash,
-        uint64 _expirationTimestamp
-    ) external;
+    function bridgehubRequestL2TransactionOnGateway(bytes32 _canonicalTxHash, uint64 _expirationTimestamp) external;
 
     /// @dev On L1 we have to forward to the Gateway's mailbox which sends to the Bridgehub on the Gw
     /// @param _chainId the chainId of the chain
-    /// @param _transaction the transaction to be relayed
-    /// @param _factoryDeps the factory dependencies
     /// @param _canonicalTxHash the canonical transaction hash
     /// @param _expirationTimestamp the expiration timestamp
     function requestL2TransactionToGatewayMailbox(
         uint256 _chainId,
-        L2CanonicalTransaction calldata _transaction,
-        bytes[] calldata _factoryDeps,
         bytes32 _canonicalTxHash,
         uint64 _expirationTimestamp
     ) external returns (bytes32 canonicalTxHash);
@@ -175,4 +166,13 @@ interface IMailbox is IZkSyncHyperchainBase {
         L2CanonicalTransaction transaction,
         bytes[] factoryDeps
     );
+
+    /// @notice New relayed priority request event. It is emitted on a chain that is deployed
+    /// on top of the gateway when it receives a request relayed via the Bridgehub.
+    /// @dev IMPORTANT: this event most likely will be removed in the future, so
+    /// no one should rely on it for indexing purposes.
+    /// @param txId Serial number of the priority operation
+    /// @param txHash keccak256 hash of encoded transaction representation
+    /// @param expirationTimestamp Timestamp up to which priority request should be processed
+    event NewRelayedPriorityTransaction(uint256 txId, bytes32 txHash, uint64 expirationTimestamp);
 }

l1-contracts/test/foundry/integration/GatewayTests.t.sol

@@ -141,28 +141,9 @@ contract GatewayTests is L1ContractDeployer, HyperchainDeployer, TokenDeployer,
         finishMoveChain();
 
         IBridgehub bridgehub = IBridgehub(l1Script.getBridgehubProxyAddress());
-        L2CanonicalTransaction memory tx = L2CanonicalTransaction({
-            txType: 255,
-            from: uint256(0),
-            to: uint256(0),
-            gasLimit: 72000000,
-            gasPerPubdataByteLimit: 800,
-            maxFeePerGas: 1,
-            maxPriorityFeePerGas: 0,
-            paymaster: 0,
-            // Note, that the priority operation id is used as "nonce" for L1->L2 transactions
-            nonce: 0,
-            value: 0,
-            reserved: [uint256(0), 0, 0, 0],
-            data: "0x",
-            signature: new bytes(0),
-            factoryDeps: new uint256[](0),
-            paymasterInput: "0x",
-            reservedDynamic: "0x"
-        });
         vm.chainId(12345);
         vm.startBroadcast(SETTLEMENT_LAYER_RELAY_SENDER);
-        bridgehub.forwardTransactionOnGateway(mintChainId, tx, new bytes[](0), bytes32(0), 0);
+        bridgehub.forwardTransactionOnGateway(mintChainId, bytes32(0), 0);
         vm.stopBroadcast();
     }