Re: [aether-users] How can I verify proper authentication before use

[Benjamin Bentmann <bentmann@xxxxxxxxxxxx>]

Lothar Werzinger wrote:

> How can I trigger an early authentication, so that I prevent
> getting authentication errors later on

AFAIK, some repository managers/servers allow to configure access 
control for different repositories or even portions thereof. So testing 
successful authentication is not a guarantee that later actions do not 
fail with authorization issues. Just keep in that mind.

For simple setups, trying to resolve some metadata and checking for 
errors should do.

> I would also like to prompt the user for credentials only if the remote
> repository requires authentication. Is there a way to query that, so that I
> can use the AuthenticationBuilder only when necessary?

Besides the above method of attempting some resolution, there's no means 
to query a remote repository whether it will require auth.

You should however note that AuthenticationBuilder is just a convenience 
to build an impl of Authentication and you can simply provide your own 
impl that prompts for credentials when its fill() method is called. 
Together with aether-transport-http, this should allow you to lazily 
fetch credentials.


Benjamin