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#[macro_use]
extern crate diesel;
pub mod db;
pub mod db_types;
pub mod modules;
pub mod routes;
pub mod schema;
pub mod util;
use std::net::SocketAddr;
use std::ops::Deref;
use bb8::{Pool, PooledConnection};
use bb8_diesel::{self, DieselConnectionManager};
use config::ConfigError;
use diesel::{Connection, PgConnection};
use modules::ranking::run_ranker;
use serde::Deserialize;
use axum::{
async_trait,
extract::{Extension, FromRequest, RequestParts},
http::StatusCode,
routing::{get, post},
AddExtensionLayer, Router,
};
// TODO: make these configurable
const BOTS_DIR: &str = "./data/bots";
const MATCHES_DIR: &str = "./data/matches";
const MAPS_DIR: &str = "./data/maps";
const SIMPLEBOT_PATH: &str = "../simplebot/simplebot.py";
type ConnectionPool = bb8::Pool<DieselConnectionManager<PgConnection>>;
pub async fn seed_simplebot(pool: &ConnectionPool) {
let conn = pool.get().await.expect("could not get database connection");
// This transaction is expected to fail when simplebot already exists.
let _res = conn.transaction::<(), diesel::result::Error, _>(|| {
use db::bots::NewBot;
let new_bot = NewBot {
name: "simplebot",
owner_id: None,
};
let simplebot = db::bots::create_bot(&new_bot, &conn)?;
let simplebot_code =
std::fs::read_to_string(SIMPLEBOT_PATH).expect("could not read simplebot code");
modules::bots::save_code_bundle(&simplebot_code, Some(simplebot.id), &conn)?;
println!("initialized simplebot");
Ok(())
});
}
pub type DbPool = Pool<DieselConnectionManager<PgConnection>>;
pub async fn prepare_db(database_url: &str) -> DbPool {
let manager = DieselConnectionManager::<PgConnection>::new(database_url);
let pool = bb8::Pool::builder().build(manager).await.unwrap();
seed_simplebot(&pool).await;
pool
}
pub fn api() -> Router {
Router::new()
.route("/register", post(routes::users::register))
.route("/login", post(routes::users::login))
.route("/users/me", get(routes::users::current_user))
.route(
"/bots",
get(routes::bots::list_bots).post(routes::bots::create_bot),
)
.route("/bots/my_bots", get(routes::bots::get_my_bots))
.route("/bots/:bot_id", get(routes::bots::get_bot))
.route(
"/bots/:bot_id/upload",
post(routes::bots::upload_code_multipart),
)
.route(
"/matches",
get(routes::matches::list_matches).post(routes::matches::play_match),
)
.route("/matches/:match_id", get(routes::matches::get_match_data))
.route(
"/matches/:match_id/log",
get(routes::matches::get_match_log),
)
.route("/submit_bot", post(routes::demo::submit_bot))
.route("/save_bot", post(routes::bots::save_bot))
}
pub fn get_config() -> Result<Configuration, ConfigError> {
config::Config::builder()
.add_source(config::File::with_name("configuration.toml"))
.add_source(config::Environment::with_prefix("PLANETWARS"))
.build()?
.try_deserialize()
}
pub async fn run_app() {
let configuration = get_config().unwrap();
let db_pool = prepare_db(&configuration.database_url).await;
tokio::spawn(run_ranker(db_pool.clone()));
let api_service = Router::new()
.nest("/api", api())
.layer(AddExtensionLayer::new(db_pool))
.into_make_service();
// TODO: put in config
let addr = SocketAddr::from(([127, 0, 0, 1], 9000));
axum::Server::bind(&addr).serve(api_service).await.unwrap();
}
#[derive(Deserialize)]
pub struct Configuration {
pub database_url: String,
}
// we can also write a custom extractor that grabs a connection from the pool
// which setup is appropriate depends on your application
pub struct DatabaseConnection(PooledConnection<'static, DieselConnectionManager<PgConnection>>);
impl Deref for DatabaseConnection {
type Target = PooledConnection<'static, DieselConnectionManager<PgConnection>>;
fn deref(&self) -> &Self::Target {
&self.0
}
}
#[async_trait]
impl<B> FromRequest<B> for DatabaseConnection
where
B: Send,
{
type Rejection = (StatusCode, String);
async fn from_request(req: &mut RequestParts<B>) -> Result<Self, Self::Rejection> {
let Extension(pool) = Extension::<ConnectionPool>::from_request(req)
.await
.map_err(internal_error)?;
let conn = pool.get_owned().await.map_err(internal_error)?;
Ok(Self(conn))
}
}
/// Utility function for mapping any error into a `500 Internal Server Error`
/// response.
fn internal_error<E>(err: E) -> (StatusCode, String)
where
E: std::error::Error,
{
(StatusCode::INTERNAL_SERVER_ERROR, err.to_string())
}
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