Add example to call System.RemarkWithEvent in an Eth transaction.

Author: Neopallium

eth-rpc/examples/eth-remark-call.rs

@@ -0,0 +1,60 @@
+// This file is part of Substrate.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+use jsonrpsee::http_client::HttpClientBuilder;
+use pallet_revive::evm::{Account, ReceiptInfo};
+use pallet_revive_eth_rpc::example::TransactionBuilder;
+use sp_core::H160;
+use std::sync::Arc;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let tx_payload: Vec<u8> = vec![
+        0x00, // System pallet index.
+        0x07, // Remark With Event call index.
+        0x10, // Compact-encoded length of the remark (16).
+        0x54, 0x45, 0x53, 0x54, // Remark 'T', 'E', 'S', 'T'
+    ];
+
+    let client = Arc::new(HttpClientBuilder::default().build("http://localhost:8545")?);
+
+    let alith = Account::default();
+    // Revive pallet address.
+    let dest = H160::from_slice(&hex::decode("6d6f646c70792f70616464720000000000000000")?);
+
+    println!("\n\n=== Eth calling System.Remark  ===\n\n");
+
+    let tx = TransactionBuilder::new(&client)
+        .signer(alith)
+        .input(tx_payload)
+        .to(dest)
+        .send()
+        .await?;
+    println!("Transaction hash: {:?}", tx.hash());
+
+    let ReceiptInfo {
+        block_number,
+        gas_used,
+        status,
+        ..
+    } = tx.wait_for_receipt().await?;
+    println!("Receipt: ");
+    println!("- Block number: {block_number}");
+    println!("- Gas used: {gas_used}");
+    println!("- Success: {status:?}");
+
+    Ok(())
+}