/*
 * 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.shardingsphere.shardingproxy.frontend.engine;

import io.netty.channel.ChannelHandlerContext;
import org.apache.shardingsphere.shardingproxy.backend.communication.jdbc.connection.BackendConnection;
import org.apache.shardingsphere.shardingproxy.transport.payload.PacketPayload;

/**
 * Authentication engine.
 *
 * @author zhangliang
 */
public interface AuthenticationEngine {
    
    /**
     * Handshake.
     *
     * @param context channel handler context
     * @param backendConnection backend connection
     */
    void handshake(ChannelHandlerContext context, BackendConnection backendConnection);
    
    /**
     * Authentication.
     *
     * @param context channel handler context
     * @param payload packet payload
     * @param backendConnection backend connection
     * @return auth finish or not
     */
    boolean auth(ChannelHandlerContext context, PacketPayload payload, BackendConnection backendConnection);
}

/*
 * 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.shardingsphere.shardingproxy.frontend.engine;

import io.netty.channel.ChannelHandlerContext;
import org.apache.shardingsphere.shardingproxy.backend.communication.jdbc.connection.BackendConnection;
import org.apache.shardingsphere.shardingproxy.transport.payload.PacketPayload;

/**
 * User engine.
 *
 * @author zhangliang
 */
public interface AuthenticationEngine {
    
    /**
     * Handshake.
     *
     * @param context channel handler context
     * @param backendConnection backend connection
     */
    void handshake(ChannelHandlerContext context, BackendConnection backendConnection);
    
    /**
     * User.
     *
     * @param context channel handler context
     * @param payload packet payload
     * @param backendConnection backend connection
     * @return auth finish or not
     */
    boolean auth(ChannelHandlerContext context, PacketPayload payload, BackendConnection backendConnection);
}

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