server: Embed migrations

musicus_server/Cargo.toml

@@ -9,6 +9,7 @@ actix-web-httpauth = "0.5.0"
 anyhow = "1.0.34"
 derive_more = "0.99.11"
 diesel = { version = "1.4.4", features = ["postgres", "r2d2"] }
+diesel_migrations = "1.4.0"
 dotenv = "0.15.0"
 env_logger = "0.8.1"
 jsonwebtoken = "7.2.0"

musicus_server/src/database/mod.rs

@@ -22,6 +22,9 @@ pub use works::*;
 
 mod schema;
 
+// This makes the SQL migration scripts accessible from the code.
+embed_migrations!();
+
 /// A pool of connections to the database.
 pub type DbPool = r2d2::Pool<r2d2::ConnectionManager<PgConnection>>;
 
@@ -35,5 +38,9 @@ pub fn connect() -> Result<DbPool> {
     let manager = r2d2::ConnectionManager::<PgConnection>::new(url);
     let pool = r2d2::Pool::new(manager)?;
 
+    // Run embedded migrations.
+    let conn = pool.get()?;
+    embedded_migrations::run(&conn)?;
+
     Ok(pool)
 }

musicus_server/src/main.rs

@@ -2,6 +2,10 @@
 #[macro_use]
 extern crate diesel;
 
+// Required for embed_migrations macro in database/mod.rs
+#[macro_use]
+extern crate diesel_migrations;
+
 use actix_web::{App, HttpServer};
 
 mod database;