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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.

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/*
 * 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 io.netty.buffer.ByteBuf;

import org.apache.cassandra.transport.CBUtil;
import org.apache.cassandra.transport.Message;
import org.apache.cassandra.transport.ProtocolVersion;

/**
 * Message to indicate that the server is ready to receive requests.
 */
public class AuthenticateMessage extends Message.Response
{
    public static final Message.Codec codec = new Message.Codec()
    {
        public AuthenticateMessage decode(ByteBuf body, ProtocolVersion version)
        {
            String authenticator = CBUtil.readString(body);
            return new AuthenticateMessage(authenticator);
        }

        public void encode(AuthenticateMessage msg, ByteBuf dest, ProtocolVersion version)
        {
            // Safe to skip. `msg.authenticator` is a FQCN string. All characters are ASCII encoded.
            CBUtil.writeAsciiString(msg.authenticator, dest);
        }

        public int encodedSize(AuthenticateMessage msg, ProtocolVersion version)
        {
            return CBUtil.sizeOfAsciiString(msg.authenticator);
        }
    };

    public final String authenticator;

    public AuthenticateMessage(String authenticator)
    {
        super(Message.Type.AUTHENTICATE);
        this.authenticator = authenticator;
    }

    @Override
    public String toString()
    {
        return "AUTHENTICATE " + authenticator;
    }
}