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use diesel::{result::Error as DieselError, Connection as _};
use crate::db::backend::Connection;
mod change;
pub use change::*;
pub struct Migration {
pub id: usize,
pub name: &'static str,
pub prereqs: &'static [(&'static str, usize)],
pub changes: &'static [DatabaseChange],
}
impl Migration {
pub fn apply(&self, app_name: &str, connection: &Connection) {
// TODO prevent double-applying
connection
.transaction::<_, DieselError, _>(|| {
println!("{}:\tapplying {} (id {})", app_name, self.name, self.id);
for change in self.changes {
change.apply(app_name, connection);
}
Ok(())
})
.unwrap();
}
}
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