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/*
* Copyright DataStax, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.datastax.driver.core;
import com.datastax.driver.core.exceptions.AuthenticationException;
import java.net.InetSocketAddress;
/**
* Provides {@link Authenticator} instances for use when connecting to Cassandra nodes.
*
* See {@link PlainTextAuthProvider} for an implementation which uses SASL PLAIN mechanism to
* authenticate using username/password strings
*/
public interface AuthProvider {
/**
* A provider that provides no authentication capability.
*
*
This is only useful as a placeholder when no authentication is to be used.
*/
AuthProvider NONE = new ExtendedAuthProvider.NoAuthProvider();
/**
* The {@code Authenticator} to use when connecting to {@code host}
*
* @param host the Cassandra host to connect to.
* @param authenticator the configured authenticator on the host.
* @return The authentication implementation to use.
*/
public Authenticator newAuthenticator(InetSocketAddress host, String authenticator)
throws AuthenticationException;
/**
* Dummy Authenticator that accounts for DSE authentication configured with transitional mode.
*
*
In this situation, the client is allowed to connect without authentication, but DSE would
* still send an AUTHENTICATE response. This Authenticator handles this situation by sending back
* a dummy credential.
*/
class TransitionalModePlainTextAuthenticator
extends PlainTextAuthProvider.PlainTextAuthenticator {
public TransitionalModePlainTextAuthenticator() {
super("", "");
}
}
}