embed db migrations into binary

Cargo.lock

@@ -871,6 +871,17 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "diesel_migrations"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a73ce704bad4231f001bff3314d91dce4aba0770cee8b233991859abc15c1f6"
+dependencies = [
+ "diesel",
+ "migrations_internals",
+ "migrations_macros",
+]
+
 [[package]]
 name = "diesel_table_macro_syntax"
 version = "0.2.0"
@@ -1783,6 +1794,27 @@ version = "2.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
 
+[[package]]
+name = "migrations_internals"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd01039851e82f8799046eabbb354056283fb265c8ec0996af940f4e85a380ff"
+dependencies = [
+ "serde",
+ "toml",
+]
+
+[[package]]
+name = "migrations_macros"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ffb161cc72176cb37aa47f1fc520d3ef02263d67d661f44f05d05a079e1237fd"
+dependencies = [
+ "migrations_internals",
+ "proc-macro2",
+ "quote",
+]
+
 [[package]]
 name = "mime"
 version = "0.3.17"
@@ -2602,6 +2634,7 @@ dependencies = [
  "console_error_panic_hook",
  "deadpool-diesel",
  "diesel",
+ "diesel_migrations",
  "dotenvy",
  "futures",
  "lettre",

Cargo.toml

@@ -33,3 +33,4 @@ tower = "0.5.2"
 regex = "1.11.1"
 lettre = { version = "0.11.12", features = ["tokio1", "serde", "tracing", "tokio1-native-tls"] }
 clap = { version = "4.5.31", features = ["derive"] }
+diesel_migrations = { version = "2.2.0", features = ["postgres"] }

src/main.rs

@@ -25,6 +25,7 @@ use std::process::exit;
 
 use chrono::{TimeDelta, Utc};
 use clap::{Parser, Subcommand};
+use diesel_migrations::{embed_migrations, EmbeddedMigrations, MigrationHarness};
 use email::SmtpOptions;
 use tokio::time::sleep;
 use tracing_subscriber::EnvFilter;
@@ -71,6 +72,7 @@ async fn main() {
     let db_pool = deadpool_diesel::postgres::Pool::builder(manager)
         .build()
         .unwrap();
+
     let session_store = PgStore::new(db_pool.clone());
     let reqwest_client = reqwest::ClientBuilder::new()
         .https_only(true)
@@ -94,6 +96,16 @@ async fn main() {
         exit(1);
     };
 
+    if settings.run_database_migrations == Some(1) {
+        const MIGRATIONS: EmbeddedMigrations = embed_migrations!("migrations/");
+        // Run migrations on server startup
+        let conn = db_pool.get().await.unwrap();
+        conn.interact(|conn| conn.run_pending_migrations(MIGRATIONS).map(|_| ()))
+            .await
+            .unwrap()
+            .unwrap();
+    }
+
     let app_state = AppState {
         db_pool: db_pool.clone(),
         mailer,

src/settings.rs

@@ -13,6 +13,11 @@ pub struct Settings {
 
     pub database_url: String,
 
+    /**
+     * When set to 1, embedded Diesel migrations will be run on startup.
+     */
+    pub run_database_migrations: Option<u8>,
+
     #[serde(default = "default_host")]
     pub host: String,