add basic config file parsing

src/main.rs

@@ -0,0 +1,43 @@
+use tokio::fs;
+
+
+use serde::{Serialize, Deserialize};
+use clap::Parser;
+
+#[derive(Serialize, Deserialize, Debug)]
+struct TcpServerConfig {
+    bind_addr: String,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+enum InterfaceConfig {
+    TcpServer(TcpServerConfig)
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+struct Config {
+    interfaces: Vec<InterfaceConfig>,
+}
+
+
+#[derive(Parser)]
+struct Cli {
+    #[arg(short, long)]
+    config_file: String,
+}
+
+#[tokio::main]
+async fn main() {
+    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("trace")).init();
+
+    log::info!(">>> TRANSPORT NODE <<<");
+
+    let cli = Cli::parse();
+
+    let config: Config = toml::from_str(&fs::read_to_string(cli.config_file).await.unwrap()).unwrap();
+
+    println!("{config:?}");
+
+
+    log::info!("exit");
+}