Error: failed to connect to database: password authentication failed in Rust - postgresql

Question

I am trying to connect to database in Rust using sqlx crate and Postgres database.
main.rs:
use dotenv;
use sqlx::Pool;
use sqlx::PgPool;
use sqlx::query;
#[async_std::main]
async fn main() -> Result<(), Error> {
dotenv::dotenv().ok();
pretty_env_logger::init();
let url = std::env::var("DATABASE_URL").unwrap();
dbg!(url);
let db_url = std::env::var("DATABASE_URL")?;
let db_pool: PgPool = Pool::new(&db_url).await?;
let rows = query!("select 1 as one").fetch_one(&db_pool).await?;
dbg!(rows);
let mut app = tide::new();
app.at("/").get(|_| async move {Ok("Hello Rustacean!")});
app.listen("127.0.0.1:8080").await?;
Ok(())
}
#[derive(thiserror::Error, Debug)]
enum Error {
#[error(transparent)]
DbError(#[from] sqlx::Error),
#[error(transparent)]
IoError(#[from] std::io::Error),
#[error(transparent)]
VarError(#[from] std::env::VarError),
}
Here is my .env file:
DATABASE_URL=postgres://localhost/twitter
RUST_LOG=trace
Error log:
error: failed to connect to database: password authentication failed for user "ayman"
--> src/main.rs:19:16
|
19 | let rows = query!("select 1 as one").fetch_one(&db_pool).await?;
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to previous error
error: could not compile `backend`.
Note:
There exists a database called twitter.
I have include macros for sqlx's dependency
sqlx = {version="0.3.5", features = ["runtime-async-std", "macros", "chrono", "json", "postgres", "uuid"]}
Am I missing some level of authentication for connecting to database? I could not find it in docs for sqlx::Query macro

Answer 1

The reason why it is unable to authenticate is that you must provide credentials before accessing the database
There are two ways to do it
Option 1: Change your URL to contain the credentials - For instance -
DATABASE_URL=postgres://localhost?dbname=mydb&user=postgres&password=postgres
Option 2 Use PgConnectionOptions - For instance
let pool_options = PgConnectOptions::new()
.host("localhost")
.port(5432)
.username("dbuser")
.database("dbtest")
.password("dbpassword");
let pool: PgPool = Pool::<Postgres>::connect_with(pool_options).await?;
Note: The sqlx version that I am using is sqlx = {version="0.5.1"}
For more information refer the docs - https://docs.rs/sqlx/0.5.1/sqlx/postgres/struct.PgConnectOptions.html#method.password
Hope this helps you.