AuthenticationManager.java

package auth;

import auth.models.Token;
import exceptions.PoseidonException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import play.mvc.Http;
import service.UserPreferenceService;

import java.util.HashMap;
import java.util.Map;

public class AuthenticationManager {

  private static final Logger logger = LoggerFactory.getLogger(AuthenticationManager.class);

  private final Map<GrantType, Authenticator> authenticators;

  public AuthenticationManager() {
    authenticators = new HashMap<>();
    authenticators.put(GrantType.LDAP, new LDAPAuthenticator());
    authenticators.put(GrantType.PASSWORD, new OAuth2PasswordAuthenticator());
    authenticators.put(GrantType.REFRESH_TOKEN, new OAuth2RefreshTokenAuthenticator());
  }

  public AuthenticationManager(Map<GrantType, Authenticator> authenticators) {
    this.authenticators = authenticators;
  }

  /**
   * Attempt to authenticate the authentication by looping through the authenticators.
   * Returns the token from the first authenticator which does not return null.
   */
  public Token authenticate(Authentication authentication) {
    Authenticator authenticator = authenticators.get(authentication.getGrantType());
    if (authenticator != null) {
      Token result = authenticator.authenticate(authentication);
      return result;
    }
    else {
      logger.warn("Did not find an authentication manager for grant type {}.", authentication.getGrantType());
      throw new PoseidonException(Http.Status.BAD_REQUEST,"Grant type '" + authentication.getGrantType().getValue() + "' is not supported");
    }
  }
}