perf: SQLite NORMAL mode on fs vault connections

src/database/stores/fs/mod.rs

@@ -61,6 +61,25 @@ impl Drop for PragmaSynchronousGuard<'_> {
     }
 }
 
+#[derive(Debug)]
+struct ConnectionOptions;
+
+impl ConnectionOptions {
+    pub fn apply(&self, conn: &SqliteConnection) -> diesel::QueryResult<()> {
+        debug!(r#"Setting "synchronous" to NORMAL"#);
+        conn.execute("PRAGMA synchronous = NORMAL;")?;
+        Ok(())
+    }
+}
+
+impl diesel::r2d2::CustomizeConnection<SqliteConnection, diesel::r2d2::Error>
+    for ConnectionOptions
+{
+    fn on_acquire(&self, conn: &mut SqliteConnection) -> Result<(), diesel::r2d2::Error> {
+        self.apply(conn).map_err(diesel::r2d2::Error::QueryError)
+    }
+}
+
 pub struct FsStore {
     path: PathBuf,
     pool: r2d2::Pool<ConnectionManager<SqliteConnection>>,
@@ -76,7 +95,9 @@ impl FsStore {
                 .to_str()
                 .unwrap(),
         );
-        let pool = r2d2::Pool::builder().build(manager)?;
+        let pool = r2d2::Pool::builder()
+            .connection_customizer(Box::new(ConnectionOptions {}))
+            .build(manager)?;
         let connection = pool.get()?;
 
         // while diesel doesn't support multiple embedded migrations...