2020-10-14 20:36:24 +00:00
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#![feature(decl_macro, proc_macro_hygiene)]
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2020-10-13 23:40:03 +00:00
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#[macro_use] extern crate rocket;
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2020-10-14 00:13:00 +00:00
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#[macro_use] extern crate serde_derive;
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2020-10-14 20:27:21 +00:00
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2020-10-14 21:12:13 +00:00
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extern crate diesel;
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extern crate dotenv;
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2020-10-14 00:13:00 +00:00
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extern crate rocket_contrib;
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2020-10-13 23:40:03 +00:00
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2020-10-14 21:12:13 +00:00
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use diesel::pg::PgConnection;
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use diesel::r2d2::ConnectionManager;
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use r2d2::{Pool, PooledConnection};
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use rocket::{Outcome, Request, State};
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use rocket::http::Status;
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use rocket::request::{self, FromRequest};
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2020-10-14 00:01:25 +00:00
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use rocket_contrib::templates::Template;
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2020-10-14 21:12:13 +00:00
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use std::env;
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use std::ops::Deref;
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struct DbConn(PooledConnection<ConnectionManager<PgConnection>>);
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impl<'a, 'r> FromRequest<'a, 'r> for DbConn {
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type Error = ();
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fn from_request(request: &'a Request<'r>) -> request::Outcome<DbConn, ()> {
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let pool =
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request.guard::<State<Pool<ConnectionManager<PgConnection>>>>()?;
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match pool.get() {
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Ok(conn) => Outcome::Success(DbConn(conn)),
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Err(_) => Outcome::Failure((Status::ServiceUnavailable, ())),
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}
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}
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}
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impl Deref for DbConn {
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type Target = PgConnection;
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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2020-10-14 00:01:25 +00:00
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2020-10-14 00:13:00 +00:00
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#[derive(Serialize)]
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struct TemplateContext {
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parent: &'static str,
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2020-10-14 00:22:37 +00:00
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users: Vec<&'static str>,
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2020-10-14 00:13:00 +00:00
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}
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2020-10-14 00:26:03 +00:00
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fn main() {
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2020-10-14 21:12:13 +00:00
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dotenv::dotenv().ok();
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2020-10-14 00:27:00 +00:00
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rocket().launch();
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}
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fn rocket() -> rocket::Rocket {
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2020-10-14 00:26:03 +00:00
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rocket::ignite()
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.attach(Template::fairing())
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2020-10-14 00:29:50 +00:00
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.mount("/", routes())
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}
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fn routes() -> Vec<rocket::Route> {
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routes![index]
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2020-10-14 00:26:03 +00:00
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}
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2020-10-14 21:12:13 +00:00
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fn create_db_pool() -> Pool<ConnectionManager<PgConnection>> {
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let credentials = env::var("DATABASE_URL")
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.expect("DATABASE_URL must be set");
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let manager = ConnectionManager::<PgConnection>::new(credentials);
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Pool::new(manager).expect("Failed to create database pool")
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}
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2020-10-13 23:40:03 +00:00
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#[get("/")]
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2020-10-14 00:01:25 +00:00
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fn index() -> Template {
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2020-10-14 00:13:00 +00:00
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let template_context = TemplateContext {
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parent: "layout",
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2020-10-14 00:22:37 +00:00
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users: vec!["foo", "bar", "car"],
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2020-10-14 00:13:00 +00:00
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};
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Template::render("index", &template_context)
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2020-10-13 23:40:03 +00:00
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}
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