test with kerkour architecture (https://kerkour.com/rust-web-application-clean-architecture)

src/database.rs

@@ -0,0 +1,23 @@
+use std::time::Duration;
+
+use anyhow::Error;
+use sqlx::{self, postgres::PgPoolOptions, Executor, Pool, Postgres};
+
+use crate::config;
+
+pub type DB = Pool<Postgres>;
+pub trait Queryer<'c>: Executor<'c, Database = sqlx::Postgres> {}
+
+impl<'c> Queryer<'c> for &Pool<Postgres> {}
+
+pub async fn connect(database: &config::Database) -> Result<DB, Error> {
+    PgPoolOptions::new()
+        .max_connections(database.pool_size)
+        .max_lifetime(Duration::from_secs(database.max_lifetime))
+        .connect(&database.url)
+        .await
+        .map_err(|err| {
+            tracing::error!("{}", err);
+            err.into()
+        })
+}