Add auth to base examples

[marcelbuesing]

This might be common knowledge but I was not aware that there was the need for calling auth with user and password after already providing it via uri already.

So:

let client = Client::with_uri("mongodb://x:y@localhost:27017")?;

turned out to be

let client = Client::with_uri("mongodb://x:y@localhost:27017")?;
client.auth("x", "y");

Is this a bug or am I missunderstanding user and pass in the uri ?

[kyeah]

Thanks for the issue! user-password authentication occurs at the database-level. The user, password, and database are parsed from the URI, but I don't believe we have it set up to automatically authenticate when you create the database object, which is probably desirable from a user standpoint.

[HugoSanchez]

Hi,

I get:

No method named 'auth' for found type 'std::sync::Arc::<mongodb::ClientInner>' in the current scope.

I'm also not able to use '?' in the previous line were I connect 'with_uri'.

What am I missing here?

[jcdyer]

Sorry this is a year late, but for posterity, auth is on the db object. So try:

let db = client.db("appdb")?;
db.auth("x", "y")?;

You can only use ? in functions that return Result<T, E>. If you are in a function that returns something else, you'll need to handle the error yourself. The most flexible way is:

let db = match client.db("appdb") {
    Ok(db) => db,
    Err(err) => /* Do something else */
};
if let Err(err) => db.auth("username", "password") {
    eprintln!("Could not authenticate: {:?}", err)
}

If all you want to do is exit the program when something fails, you can do:

let db = client.database("appdb").expect("could not connect to database appdb");
db.auth("username", "password").expect("could not authenticate to database appdb");

[saghm]

Hello everyone! We've just released an alpha of an official MongoDB Rust driver; you can read about it here! Because of this, we won't be updating this driver anymore, and the repository will be made read-only as soon as I get finished posting these messages. Thanks for using this driver, and we hope you try out the new one!