re-added sqlite check_db code, cleanup

Cargo.toml

@@ -13,8 +13,8 @@ build = "build.rs"
 [features]
 # Empty to keep compatibility, prefer to set USE_SYSLOG=true
 enable_syslog = []
-mysql = []
+mysql = ["diesel/mysql", "diesel_migrations/mysql"]
-sqlite = []
+sqlite = ["diesel/sqlite", "diesel_migrations/sqlite"]
 
 [target."cfg(not(windows))".dependencies]
 syslog = "4.0.1"

src/config.rs

@@ -202,8 +202,6 @@ make_config! {
     folders {
         ///  Data folder |> Main data folder
         data_folder:            String, false,  def,    "data".to_string();
-
-        /// Database URL
         /// Database URL
         database_url:           String, false,  auto,   |c| format!("{}/{}", c.data_folder, "db.sqlite3");
         /// Icon chache folder

src/db/mod.rs

@@ -2,10 +2,6 @@ use std::ops::Deref;
 
 use diesel::r2d2;
 use diesel::r2d2::ConnectionManager;
-#[cfg(feature = "sqlite")]
-use diesel::sqlite::SqliteConnection;
-#[cfg(feature = "mysql")]
-use diesel::mysql::MysqlConnection;
 use diesel::{Connection as DieselConnection, ConnectionError};
 
 use rocket::http::Status;
@@ -16,11 +12,11 @@ use crate::CONFIG;
 
 /// An alias to the database connection used
 #[cfg(feature = "sqlite")]
-type Connection = SqliteConnection;
+type Connection = diesel::sqlite::SqliteConnection;
 #[cfg(feature = "mysql")]
-type Connection = MysqlConnection;
+type Connection = diesel::mysql::MysqlConnection;
 
-/// An alias to the type for a pool of Diesel MySQL connections.
+/// An alias to the type for a pool of Diesel connections.
 type Pool = r2d2::Pool<ConnectionManager<Connection>>;
 
 /// Connection request guard type: a wrapper around an r2d2 pooled connection.

src/main.rs

@@ -45,6 +45,9 @@ fn main() {
         init_logging().ok();
     }
 
+    #[cfg(all(feature = "sqlite", feature = "mysql"))]
+    compile_error!("Can't enable both backends");
+
     check_db();
     check_rsa_keys();
     check_web_vault();
@@ -123,6 +126,26 @@ fn chain_syslog(logger: fern::Dispatch) -> fern::Dispatch {
 
 fn check_db() {
     let url = CONFIG.database_url();
+    if cfg!(feature = "sqlite") {
+        let path = Path::new(&url);
+
+        if let Some(parent) = path.parent() {
+            use std::fs;
+            if fs::create_dir_all(parent).is_err() {
+                error!("Error creating database directory");
+                exit(1);
+            }
+        }
+
+        // Turn on WAL in SQLite
+        if CONFIG.enable_db_wal() {
+            use diesel::RunQueryDsl;
+            let connection = db::get_connection().expect("Can't conect to DB");
+            diesel::sql_query("PRAGMA journal_mode=wal")
+                .execute(&connection)
+                .expect("Failed to turn on WAL");
+        }
+    }
     println!("{}", url.to_string());
     db::get_connection().expect("Can't conect to DB");
 }