AuthenticationProvider (security 3.9.0 API)

```
public interface AuthenticationProvider
```
Defines an authentication provider.

Since:

1.0

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`org.reactivestreams.Publisher<AuthenticationResponse>`	`authenticate(io.micronaut.http.HttpRequest<?> httpRequest, AuthenticationRequest<?,?> authenticationRequest)`	Authenticates a user with the given request.

- Method Detail
  - authenticate
```
org.reactivestreams.Publisher<AuthenticationResponse> authenticate(@Nullable
                                                                   io.micronaut.http.HttpRequest<?> httpRequest,
                                                                   AuthenticationRequest<?,?> authenticationRequest)
```
    Authenticates a user with the given request. If a successful authentication is returned, the object must be an instance of Authentication. Publishers MUST emit cold observables! This method will be called for all authenticators for each authentication request and it is assumed no work will be done until the publisher is subscribed to.
    
    Parameters:
    
    httpRequest - The http request
    
    authenticationRequest - The credentials to authenticate
    
    Returns:
    
    A publisher that emits 0 or 1 responses