Add observability using the tracing crate

src/main.rs

@@ -1,21 +1,20 @@
 extern crate dotenv;
-extern crate env_logger;
 extern crate listenfd;
 
-use contextswitch_api::run;
+use contextswitch_api::observability::{get_subscriber, init_subscriber};
+use contextswitch_api::{run, taskwarrior};
 use dotenv::dotenv;
 use std::env;
 use std::net::TcpListener;
 
-pub mod taskwarrior;
-
-#[actix_web::main]
+#[tokio::main]
 async fn main() -> std::io::Result<()> {
-    env::set_var("RUST_LOG", "actix_web=info");
-    env_logger::init();
+    let subscriber = get_subscriber("info".into());
+    init_subscriber(subscriber);
+
     dotenv().ok();
 
-    let port = env::var("PORT").unwrap_or("8000".to_string());
+    let port = env::var("PORT").unwrap_or_else(|_| "8000".to_string());
     taskwarrior::load_config(None);
 
     let listener = TcpListener::bind(format!("0.0.0.0:{}", port)).expect("Failed to bind port");