Feat/gmp api examples canh (#202)

.env.example

@@ -1 +1,7 @@
 EVM_PRIVATE_KEY=YOUR_PRIVATE_KEY_HERE
+
+# For amplifier examples
+GMP_API_URL=
+ENVIRONMENT= # e.g. devnet-amplifier, testnet, or mainnet
+CRT_PATH= # e.g. './client.crt'
+KEY_PATH= # e.g. './client.key'

.gitignore

@@ -17,3 +17,6 @@ chain-config/*.json
 !./**/artifacts/send_receive.wasm
 
 .multiversx
+
+*.crt
+*.key

examples/amplifier/config/chains.json

@@ -0,0 +1,14 @@
+{
+    "devnet-amplifier": [
+        {
+            "name": "avalanche-fuji",
+            "rpc": "https://rpc.ankr.com/avalanche_fuji",
+            "gateway": "0xF128c84c3326727c3e155168daAa4C0156B87AD1"
+        },
+        {
+            "name": "xrpl-evm-sidechain",
+            "rpc": "https://rpc-evm-sidechain.xrpl.org",
+            "gateway": "0x48CF6E93C4C1b014F719Db2aeF049AA86A255fE2"
+        }
+    ]
+}

examples/amplifier/config.js → examples/amplifier/config/config.js

@@ -1,20 +1,28 @@
 const fs = require('fs');
-
+const https = require('https');
 const dotenv = require('dotenv');
 
 // Load environment variables from .env file
 dotenv.config();
 
+// Load the certificate and key
+const cert = fs.readFileSync(process.env.CRT_PATH);
+const key = fs.readFileSync(process.env.KEY_PATH);
+
 // Default configuration values
 const defaults = {
     // gRPC
-    HOST: "localhost",
-    PORT: "50051",
+    HOST: 'localhost',
+    PORT: '50051',
 
     // GMP API
-    GMP_API_URL: "http://localhost:8080",
+    GMP_API_URL: 'http://localhost:8080',
 };
 
+const chainsConfigFile = JSON.parse(fs.readFileSync('./examples/amplifier/config/chains.json', 'utf8'));
+const environment = process.env.ENVIRONMENT;
+const chainsConfig = chainsConfigFile[environment];
+
 function getConfig() {
     const serverHOST = process.env.HOST || defaults.HOST;
     const serverPort = process.env.PORT || defaults.PORT;
@@ -25,15 +33,17 @@ function getConfig() {
         serverHOST,
         serverPort,
         gmpAPIURL,
+        chains: chainsConfig,
+        httpsAgent: new https.Agent({
+            cert,
+            key,
+            rejectUnauthorized: false,
+        }),
     };
 }
 
-const chainsConfigFile = './examples/amplifier/chains.json';
-
 function getChainConfig(chainName) {
-    const chainsConfig = JSON.parse(fs.readFileSync(chainsConfigFile, 'utf8'));
-
-    const chainConfig = chainsConfig.find(c => c.name === chainName);
+    const chainConfig = chainsConfig.find((c) => c.name === chainName);
 
     if (!chainConfig) {
         throw new Error(`RPC URL not found for chain: ${chainName}`);

examples/amplifier/config/latestTasks/latestTask-xrpl-evm-sidechain.json

@@ -0,0 +1 @@
+"01924dc4-698e-7ad2-9f9b-0bad962771ef"

examples/amplifier/contracts/AmplifierGMPTest.sol

@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import { AxelarExecutable } from '@axelar-network/axelar-gmp-sdk-solidity/contracts/executable/AxelarExecutable.sol';
+import { IAxelarGateway } from '@axelar-network/axelar-gmp-sdk-solidity/contracts/interfaces/IAxelarGateway.sol';
+
+/**
+ * @title AmplifierGMPTest
+ * @notice Send a message from chain A to chain B and stores gmp message
+ */
+contract AmplifierGMPTest is AxelarExecutable {
+    string public message;
+    string public sourceChain;
+    string public sourceAddress;
+
+    constructor(address _gateway) AxelarExecutable(_gateway) {}
+
+    /**
+     * @notice Send message from chain A to chain B
+     * @dev message param is passed in as gmp message
+     * @param destinationChain name of the dest chain (ex. "Fantom")
+     * @param destinationAddress address on dest chain this tx is going to
+     * @param _message message to be sent
+     */
+    function setRemoteValue(string calldata destinationChain, string calldata destinationAddress, string calldata _message) external {
+        bytes memory payload = abi.encode(_message);
+        gateway.callContract(destinationChain, destinationAddress, payload);
+    }
+
+    /**
+     * @notice logic to be executed on dest chain
+     * @dev this is triggered automatically by relayer
+     * @param _sourceChain blockchain where tx is originating from
+     * @param _sourceAddress address on src chain where tx is originating from
+     * @param _payload encoded gmp message sent from src chain
+     */
+    function _execute(string calldata _sourceChain, string calldata _sourceAddress, bytes calldata _payload) internal override {
+        (message) = abi.decode(_payload, (string));
+        sourceChain = _sourceChain;
+        sourceAddress = _sourceAddress;
+    }
+}