<commit_before>/*
 * Copyright 2016-2018 shardingsphere.io.
 * <p>
 * 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.
 * </p>
 */

package io.shardingsphere.proxy.frontend.common;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;

/**
 * Frontend handler.
 * 
 * @author zhangliang 
 */
public abstract class FrontendHandler extends ChannelInboundHandlerAdapter {
    
    private boolean authorized;
    
    @Override
    public void channelActive(final ChannelHandlerContext context) {
        handshake(context);
    }
    
    protected abstract void handshake(ChannelHandlerContext context);
    
    @Override
    public void channelRead(final ChannelHandlerContext context, final Object message) {
        if (!authorized) {
            auth(context, (ByteBuf) message);
            authorized = true;
        } else {
            executeCommand(context, (ByteBuf) message);
        }
    }
    
    protected abstract void auth(ChannelHandlerContext context, ByteBuf message);
    
    protected abstract void executeCommand(ChannelHandlerContext context, ByteBuf message);
}<commit_msg>shutdown channel thread pool when closed<commit_after>/*
 * Copyright 2016-2018 shardingsphere.io.
 * <p>
 * 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.
 * </p>
 */

package io.shardingsphere.proxy.frontend.common;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.shardingsphere.proxy.frontend.mysql.ChannelThreadHolder;

/**
 * Frontend handler.
 * 
 * @author zhangliang 
 */
public abstract class FrontendHandler extends ChannelInboundHandlerAdapter {
    
    private boolean authorized;
    
    @Override
    public void channelActive(final ChannelHandlerContext context) {
        handshake(context);
    }
    
    protected abstract void handshake(ChannelHandlerContext context);
    
    @Override
    public void channelRead(final ChannelHandlerContext context, final Object message) {
        if (!authorized) {
            auth(context, (ByteBuf) message);
            authorized = true;
        } else {
            executeCommand(context, (ByteBuf) message);
        }
    }
    
    @Override
    public void channelInactive(final ChannelHandlerContext ctx) {
        ctx.fireChannelInactive();
        ChannelThreadHolder.remove(ctx.channel().id());
    }
    
    protected abstract void auth(ChannelHandlerContext context, ByteBuf message);
    
    protected abstract void executeCommand(ChannelHandlerContext context, ByteBuf message);
}
{'fraction_non_alphanumeric': 0.07764060356652949, 'fraction_numerical': 0.006584362139917695, 'mean_word_length': 3.435523114355231, 'pattern_counts': {'":': 0, '<': 7, '<?xml version=': 0, '>': 7, 'https://': 0, 'lorem ipsum': 0, 'www.': 2, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4674517', 'n_tokens_mistral': 936, 'n_tokens_neox': 919, 'n_words': 317}