feat: create gmp tracker event interface

contracts/interfaces/IInterchainTransfer.sol

@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.0;
+
+/**
+ * @title IInterchainTransferSent
+ * @dev Interface for tracking asset value transfers using General Message Passing (GMP) calls in the Axelar Network.
+ * This interface defines an event that should be emitted when a GMP transfer is sent,
+ * allowing for standardized volume tracking across different implementations.
+ */
+interface IInterchainTransferSent {
+    /**
+     * @dev Emitted when a GMP transfer is sent, providing details for volume tracking.
+     * @param destinationChain The Axelar chain identifier of the destination chain.
+     * @param destinationContractAddress The address of the contract on the destination chain that receives the transfer.
+     * @param recipient The address of the final recipient of the transferred assets on the destination chain.
+     * @param token The address of the token contract on the source chain.
+     * @param amount The amount (in atomic units) of tokens transferred.
+     */
+    event InterchainTransferSent(
+        string destinationChain,
+        string destinationContractAddress,
+        address indexed sender,
+        bytes recipient,
+        address indexed token,
+        uint256 amount
+    );
+}
+
+/**
+ * @title IInterchainTransferReceived
+ * @dev Interface for tracking asset value transfers using General Message Passing (GMP) calls in the Axelar Network.
+ * This interface defines an event that should be emitted when a GMP transfer is received,
+ * allowing for standardized volume tracking across different implementations.
+ */
+interface IInterchainTransferReceived {
+    /**
+     * @dev Emitted when an interchain transfer is received, providing details for volume tracking.
+     * @param sourceChain The Axelar chain identifier of the source chain.
+     * @param sourceAddress The address of the contract that initiated the transfer on the source chain.
+     * @param sender The address of the sender in case it is different from the source contract address
+     * @param recipient The address of the final recipient of the transferred assets on the destination chain.
+     * @param token The address of the token contract on the destination chain.
+     * @param amount The amount (in atomic units) of tokens received.
+     */
+    event InterchainTransferReceived(
+        string sourceChain,
+        string sourceAddress,
+        bytes sender,
+        address indexed recipient,
+        address indexed token,
+        uint256 amount
+    );
+}

contracts/test/executable/AxelarExecutableWithTokenTest.sol

@@ -3,8 +3,9 @@
 pragma solidity ^0.8.0;
 
 import { AxelarExecutableWithToken } from '../../executable/AxelarExecutableWithToken.sol';
+import { IInterchainTransferReceived } from '../../interfaces/IInterchainTransfer.sol';
 
-contract AxelarExecutableWithTokenTest is AxelarExecutableWithToken {
+contract AxelarExecutableWithTokenTest is AxelarExecutableWithToken, IInterchainTransferReceived {
     event Received(uint256 num);
     event ReceivedWithToken(uint256 num, address tokenAddress, uint256 amount);
 
@@ -22,13 +23,19 @@ contract AxelarExecutableWithTokenTest is AxelarExecutableWithToken {
 
     function _executeWithToken(
         bytes32, /*commandId*/
-        string calldata, /*sourceChain*/
-        string calldata, /*sourceAddress*/
-        bytes calldata payload,
+        string calldata sourceChain,
+        string calldata sourceAddress,
+        bytes calldata, /*payload*/
         string calldata tokenSymbol,
         uint256 amount
     ) internal override {
-        uint256 num = abi.decode(payload, (uint256));
-        emit ReceivedWithToken(num, gatewayWithToken().tokenAddresses(tokenSymbol), amount);
+        emit InterchainTransferReceived(
+            sourceChain,
+            sourceAddress,
+            bytes(sourceAddress),
+            address(this),
+            gatewayWithToken().tokenAddresses(tokenSymbol),
+            amount
+        );
     }
 }