AuthorizationBackend (Search Guard Suite - Security 7.7.1-42.3.0 API)

All Known Implementing Classes:

InternalAuthenticationBackend, NoOpAuthorizationBackend
```
public interface AuthorizationBackend
```
Search Guard custom authorization backends need to implement this interface.
Authorization backends populate a prior authenticated User with backend roles who's the user is a member of.
Implementation classes must provide a public constructor
public MyHTTPAuthenticator(org.elasticsearch.common.settings.Settings settings, java.nio.file.Path configPath)
The constructor should not throw any exception in case of an initialization problem. Instead catch all exceptions and log a appropriate error message. A logger can be instantiated like:
private final Logger log = LogManager.getLogger(this.getClass());
Custom authorizers is a commercial feature. To make them work you need to obtain a license here: https://floragunn.com

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`fillRoles(User user, AuthCredentials credentials)`	Populate a `User` with backend roles.
`String`	`getType()`	The type (name) of the authorizer.

- Method Detail
  - getType
```
String getType()
```
    The type (name) of the authorizer. Only for logging.
    
    Returns:
    
    the type
  - fillRoles
```
void fillRoles(User user,
               AuthCredentials credentials)
        throws org.elasticsearch.ElasticsearchSecurityException
```
    Populate a User with backend roles. This method will not be called for cached users.
    Add them by calling either user.addRole() or user.addRoles()
    
    Parameters:
    
    user - The authenticated user to populate with backend roles, never null
    
    credentials - Credentials to authenticate to the authorization backend, maybe null. This parameter is for future usage, currently always empty credentials are passed!
    
    Throws:
    
    org.elasticsearch.ElasticsearchSecurityException - in case when the authorization backend cannot be reached or the credentials are insufficient to authenticate to the authorization backend.