debug: Add file logging to diagnose startup issue

backend/src/main.rs

@@ -16,36 +16,44 @@ use tower_http::{
     trace::TraceLayer,
 };
 use config::Config;
+use std::fs::OpenOptions;
+use std::io::Write;
 
-// Set up panic hook to catch panics before main
-fn setup_panic_hook() {
-    std::panic::set_hook(Box::new(|panic_info| {
-        let msg = panic_info.to_string();
-        println!("[PANIC] {}", msg);
-        let location = panic_info.location().unwrap_or_else(|| std::panic::Location::caller());
-        println!("[PANIC] Location: {}:{}:{}", location.file(), location.line(), location.column());
-    }));
+// Helper function to log to both file and stdout
+fn log(msg: &str) {
+    let timestamp = chrono::Utc::now().format("%Y-%m-%d %H:%M:%S%.3f");
+    let full_msg = format!("[{}] {}\n", timestamp, msg);
+    
+    // Try to write to file
+    if let Ok(mut file) = OpenOptions::new()
+        .create(true)
+        .append(true)
+        .open("/tmp/normogen-startup.log")
+    {
+        let _ = file.write_all(full_msg.as_bytes());
+        let _ = file.flush();
+    }
+    
+    // Also print to stdout
+    print!("{}", full_msg);
+    let _ = std::io::stdout().flush();
 }
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
-    // Install panic hook FIRST
-    setup_panic_hook();
-    
-    // IMMEDIATE output - this MUST show up
-    println!("=== NORMOGEN STARTING ===");
-    println!("[1/7] Loading environment variables...");
+    log("=== NORMOGEN STARTING ===");
+    log("[1/7] Loading environment variables...");
     
     match dotenv::dotenv() {
         Ok(path) => {
-            println!("[1/7] Loaded .env from: {:?}", path);
+            log(&format!("[1/7] Loaded .env from: {:?}", path));
         }
         Err(_) => {
-            println!("[1/7] No .env file found (OK in Docker)");
+            log("[1/7] No .env file found (OK in Docker)");
         }
     }
     
-    println!("[2/7] Initializing logging...");
+    log("[2/7] Initializing logging...");
     tracing_subscriber::fmt()
         .with_env_filter(
             tracing_subscriber::EnvFilter::try_from_default_env()
@@ -53,42 +61,42 @@ async fn main() -> anyhow::Result<()> {
         )
         .init();
     
-    println!("[3/7] Loading configuration...");
+    log("[3/7] Loading configuration...");
     let config = match Config::from_env() {
         Ok(cfg) => {
-            println!("[3/7] Config loaded: DB={}, Port={}", cfg.database.database, cfg.server.port);
+            log(&format!("[3/7] Config loaded: DB={}, Port={}", cfg.database.database, cfg.server.port));
             cfg
         }
         Err(e) => {
-            println!("[FATAL] Failed to load configuration: {}", e);
+            log(&format!("[FATAL] Failed to load configuration: {}", e));
             return Err(e);
         }
     };
     
-    println!("[4/7] Connecting to MongoDB at {}...", config.database.uri);
+    log(&format!("[4/7] Connecting to MongoDB at {}...", config.database.uri));
     let db = match db::MongoDb::new(&config.database.uri, &config.database.database).await {
         Ok(db) => {
-            println!("[4/7] MongoDB connection successful!");
+            log("[4/7] MongoDB connection successful!");
             db
         }
         Err(e) => {
-            println!("[FATAL] Failed to connect to MongoDB: {}", e);
+            log(&format!("[FATAL] Failed to connect to MongoDB: {}", e));
             return Err(e);
         }
     };
     
-    println!("[5/7] Performing health check...");
+    log("[5/7] Performing health check...");
     match db.health_check().await {
         Ok(_) => {
-            println!("[5/7] MongoDB health check: OK");
+            log("[5/7] MongoDB health check: OK");
         }
         Err(e) => {
-            println!("[FATAL] MongoDB health check failed: {}", e);
+            log(&format!("[FATAL] MongoDB health check failed: {}", e));
             return Err(e);
         }
     }
     
-    println!("[6/7] Building application...");
+    log("[6/7] Building application...");
     let jwt_service = auth::JwtService::new(config.jwt.clone());
     
     let app_state = config::AppState {
@@ -134,12 +142,12 @@ async fn main() -> anyhow::Result<()> {
     
     let app = public_routes.merge(protected_routes).with_state(app_state);
     
-    println!("[7/7] Starting server on {}:{}...", config.server.host, config.server.port);
+    log(&format!("[7/7] Starting server on {}:{}...", config.server.host, config.server.port));
     let listener = tokio::net::TcpListener::bind(&format!("{}:{}", config.server.host, config.server.port))
         .await?;
     
-    println!("=== SERVER READY ===");
-    println!("Listening on http://{}:{}", config.server.host, config.server.port);
+    log("=== SERVER READY ===");
+    log(&format!("Listening on http://{}:{}", config.server.host, config.server.port));
     
     tracing::info!("Server listening on {}:{}", config.server.host, config.server.port);