0.0.1

kb_app/src/main.rs

@@ -0,0 +1,48 @@
+// file: kb_app/src/main.rs
+
+// Prevents additional console window on Windows in release, DO NOT REMOVE!!
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
+
+//! Binary entrypoint for the kb application.
+//!
+//! This binary remains intentionally thin and delegates its logic to `kb_lib`.
+
+#![deny(unreachable_pub)]
+#![warn(missing_docs)]
+
+use fs2::FileExt;
+
+/// Entrypoint of the kb app binary.
+#[tokio::main]
+async 
+fn main() -> std::process::ExitCode 
+{
+    let mut lock_path = std::env::temp_dir();
+    lock_path.push("com_khadhroony_solana_rust.lock");
+    let lock_file = match std::fs::File::create(lock_path) {
+        Ok(lock) => lock,
+        Err(_err) => {
+            eprintln!("Cannot create lock!");
+            std::process::exit(1);
+        },
+    };
+    // trying to aquire an exclusive lock
+    if lock_file.try_lock_exclusive().is_err() {
+        eprintln!("Another instance of the app is already running!");
+        std::process::exit(1);
+    }
+
+    if rustls::crypto::CryptoProvider::get_default().is_none() {
+        let provider_result = rustls::crypto::aws_lc_rs::default_provider().install_default();
+        match provider_result {
+            Ok(()) => {},
+            Err(error) => {
+                eprintln!("kb_app rustls provider init error: {:?}", error);
+                return std::process::ExitCode::FAILURE;
+            },
+        }
+    }
+    
+    kb_app_lib::run();
+    std::process::ExitCode::SUCCESS
+}