bb8-postgres 0.4.0

r2d2-postgres, but for async tokio based connections
Documentation 
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use tokio;
use tokio_postgres;

use bb8::Pool;
use bb8_postgres::PostgresConnectionManager;

use std::str::FromStr;

// Select some static data from a Postgres DB
//
// The simplest way to start the db is using Docker:
// docker run --name gotham-middleware-postgres -e POSTGRES_PASSWORD=mysecretpassword -p 5432:5432 -d postgres
#[tokio::main]
async fn main() {
    let config = tokio_postgres::config::Config::from_str(
        "postgresql://postgres:mysecretpassword@localhost:5432",
    )
    .unwrap();
    let pg_mgr = PostgresConnectionManager::new(config, tokio_postgres::NoTls);

    let pool = match Pool::builder().build(pg_mgr).await {
        Ok(pool) => pool,
        Err(e) => panic!("builder error: {:?}", e),
    };

    let _ = pool
        .run(|connection| {
            async {
                let select = match connection.prepare("SELECT 1").await {
                    Ok(stmt) => stmt,
                    Err(e) => return Err((e, connection)),
                };

                match connection.query_one(&select, &[]).await {
                    Ok(row) => {
                        println!("result: {}", row.get::<usize, i32>(0));
                        Ok(((), connection))
                    }
                    Err(e) => Err((e, connection)),
                }
            }
        })
        .await
        .map_err(|e| panic!("{:?}", e));
}