feat: add logging with slog

2 files changed, 42 insertions, 6 deletions

diff --git a/src/config.rs b/src/config.rs
index 7146a0b..e6cd0bd 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,5 +1,9 @@
 pub use config::ConfigError;
+use deadpool_postgres::Pool;
 use serde::Deserialize;
+use slog::{o, Drain, Logger};
+use slog_async;
+use slog_term;
 
 #[derive(Deserialize)]
 pub struct ServerConfig {
@@ -19,4 +23,18 @@ impl Config {
         cfg.merge(config::Environment::new())?;
         cfg.try_into()
     }
+
+    pub fn logging() -> Logger {
+        let decorator = slog_term::TermDecorator::new().build();
+        let drain = slog_term::FullFormat::new(decorator).build().fuse();
+        let drain = slog_async::Async::new(drain).build().fuse();
+
+        slog::Logger::root(drain, o!())
+    }
+}
+
+#[derive(Clone)]
+pub struct AppState {
+    pub pool: Pool,
+    pub log: slog::Logger,
 }
diff --git a/src/main.rs b/src/main.rs
index 51c2f6d..0b3d67f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,10 +1,17 @@
 mod config;
 
-use actix_web::{web, App, HttpResponse, HttpServer};
+use actix_web::{middleware, web, App, HttpServer};
 use dotenv::dotenv;
+use slog::info;
 use tokio_postgres::NoTls;
 
-use crate::config::Config;
+use crate::config::{Config, AppState};
+
+async fn index(state: web::Data<AppState>) -> &'static str {
+    info!(state.log, "GET `/` page");
+
+    "Hello from Rust!"
+}
 
 #[actix_rt::main]
 async fn main() -> std::io::Result<()> {
@@ -12,12 +19,23 @@ async fn main() -> std::io::Result<()> {
 
     let config = Config::from_env().unwrap();
     let pool = config.pg.create_pool(NoTls).unwrap();
+    let log = Config::logging();
+
+    info!(
+        log,
+        "Starting server at http://{}:{}",
+        config.server.host,
+        config.server.port
+    );
 
     HttpServer::new(move || {
-        App::new().data(pool.clone()).service(
-            web::resource("/")
-                .to(|| HttpResponse::Ok().body("Hello from Rust!")),
-        )
+        App::new()
+            .data(AppState {
+                pool: pool.clone(),
+                log: log.clone(),
+            })
+            .wrap(middleware::Logger::default())
+            .route("/", web::get().to(index))
     })
     .bind(format!("{}:{}", config.server.host, config.server.port))?
     .run()