feat: add logger module with initialization function using tracing and dotenvy

imphnen-utils/src/lib.rs

@@ -1,3 +1,4 @@
+mod logger;
 pub mod bind_filter;
 pub mod extract_email;
 pub mod generate_date;
@@ -10,6 +11,7 @@ pub mod response_format;
 pub mod serde_helpers;
 pub mod validator;
 
+pub use logger::init_logger;
 pub use bind_filter::*;
 pub use extract_email::*;
 pub use generate_date::*;

imphnen-utils/src/logger.rs

@@ -0,0 +1,20 @@
+//! Logger initialization using tracing, tracing-subscriber, and dotenvy.
+use std::env;
+use dotenvy::dotenv;
+use tracing_subscriber::{EnvFilter, fmt};
+
+/// Initializes the logger using tracing and tracing-subscriber.
+/// Loads environment variables from `.env` and sets log level from `RUST_LOG`.
+pub fn init_logger() {
+    // Load .env file if present
+    dotenv().ok();
+
+    // Set up the tracing subscriber with EnvFilter from RUST_LOG
+    let filter = EnvFilter::try_from_default_env()
+        .or_else(|_| EnvFilter::try_new("warn"))
+        .unwrap();
+
+    fmt()
+        .with_env_filter(filter)
+        .init();
+}