src/model/db.rs

// Copyright 2022 The casbin Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use diesel::{
    pg::PgConnection,
    r2d2::{self, ConnectionManager},
};
use std::time::Duration;

embed_migrations!();

pub type Connection = PgConnection;
pub type Pool = r2d2::Pool<ConnectionManager<Connection>>;

pub fn migrate_and_config_db(url: &str, pool_size: u32) -> Pool {
    info!("Migrating and configurating database...");
    let manager = ConnectionManager::<Connection>::new(url);
    let pool = r2d2::Pool::builder()
        .connection_timeout(Duration::from_secs(10))
        .max_size(pool_size)
        .build(manager)
        .expect("Failed to create pool.");
    embedded_migrations::run(&pool.get().expect("Failed to migrate.")).expect("Failed to migrate.");

    pool
}