Add initial services

como_infrastructure/src/database/mod.rs

@@ -0,0 +1,33 @@
+use anyhow::Context;
+use sqlx::{postgres::PgPoolOptions, Pool, Postgres};
+use tracing::log::info;
+
+pub type ConnectionPool = Pool<Postgres>;
+
+pub struct ConnectionPoolManager;
+
+impl ConnectionPoolManager {
+    pub async fn new_pool(
+        connection_string: &str,
+        run_migrations: bool,
+    ) -> anyhow::Result<ConnectionPool> {
+        info!("initializing the database connection pool");
+        let pool = PgPoolOptions::new()
+            .max_connections(5)
+            .connect(connection_string)
+            .await
+            .context("error while initializing the database connection pool")?;
+
+        if run_migrations {
+            info!("migrations enabled");
+            info!("migrating database");
+
+            sqlx::migrate!()
+                .run(&pool)
+                .await
+                .context("error while running database migrations");
+        }
+
+        Ok(pool)
+    }
+}