/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.cassandra.transport.messages;
import java.util.HashMap;
import java.util.Map;
import org.apache.cassandra.auth.AuthenticatedUser;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.transport.ProtocolException;
import org.jboss.netty.buffer.ChannelBuffer;
import org.apache.cassandra.exceptions.AuthenticationException;
import org.apache.cassandra.service.QueryState;
import org.apache.cassandra.transport.CBUtil;
import org.apache.cassandra.transport.Message;
/**
* Message to indicate that the server is ready to receive requests.
*/
public class CredentialsMessage extends Message.Request
{
public static final Message.Codec<CredentialsMessage> codec = new Message.Codec<CredentialsMessage>()
{
public CredentialsMessage decode(ChannelBuffer body, int version)
{
if (version > 1)
throw new ProtocolException("Legacy credentials authentication is not supported in " +
"protocol versions > 1. Please use SASL authentication via a SaslResponse message");
Map<String, String> credentials = CBUtil.readStringMap(body);
return new CredentialsMessage(credentials);
}
public void encode(CredentialsMessage msg, ChannelBuffer dest, int version)
{
CBUtil.writeStringMap(msg.credentials, dest);
}
public int encodedSize(CredentialsMessage msg, int version)
{
return CBUtil.sizeOfStringMap(msg.credentials);
}
};
public final Map<String, String> credentials;
public CredentialsMessage()
{
this(new HashMap<String, String>());
}
private CredentialsMessage(Map<String, String> credentials)
{
super(Message.Type.CREDENTIALS);
this.credentials = credentials;
}
public Message.Response execute(QueryState state)
{
try
{
AuthenticatedUser user = DatabaseDescriptor.getAuthenticator().authenticate(credentials);
state.getClientState().login(user);
return new ReadyMessage();
}
catch (AuthenticationException e)
{
return ErrorMessage.fromException(e);
}
}
@Override
public String toString()
{
return "CREDENTIALS " + credentials;
}
}