package com.example.mina.config;

import com.example.mina.mina.code.ByteFactory;
import com.example.mina.mina.server.MinaServerHandler;
import org.apache.mina.core.filterchain.DefaultIoFilterChainBuilder;
import org.apache.mina.core.service.IoAcceptor;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.filter.codec.ProtocolCodecFilter;
import org.apache.mina.filter.executor.ExecutorFilter;
import org.apache.mina.filter.logging.LoggingFilter;
import org.apache.mina.transport.socket.nio.NioSocketAcceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.io.IOException;
import java.net.InetSocketAddress;

/**
 * @author dy
 * @date 2021/3/3
 */
@Configuration
public class ConfigMina {

    /**
     * 配置mina的多线程过滤器
     *
     * @return
     */
    @Bean
    public ExecutorFilter executorFilter() {
        //设置初始化线程数，最大线程数
        ExecutorFilter executorFilter = new ExecutorFilter(10, 20);
        return executorFilter;
    }

    /**
     * 配置mina的转码过滤器
     *
     * @return
     */
    @Bean
    public ProtocolCodecFilter protocolCodecFilter() {
//        TextLineCodecFactory factory = new TextLineCodecFactory(Charset.forName("UTF-8"),
//                LineDelimiter.WINDOWS.getValue(), LineDelimiter.WINDOWS.getValue());


        //TextLineCodecFactory factory = new TextLineCodecFactory(Charset.forName("UTF-8"), LineDelimiter.WINDOWS.getValue(), LineDelimiter.WINDOWS.getValue());
        ProtocolCodecFilter pcf = new ProtocolCodecFilter(new ByteFactory());
        //ProtocolCodecFilter pcf = new ProtocolCodecFilter(factory);
        return pcf;
    }

    /**
     * 配置mina的日志过滤器
     *
     * @return
     */
    @Bean
    public LoggingFilter loggingFilter() {
        return new LoggingFilter();
    }

    /**
     * 将过滤器注入到mina的链式管理器中
     *
     * @return
     */
    @Bean
    public DefaultIoFilterChainBuilder defaultIoFilterChainBuilder() {
        DefaultIoFilterChainBuilder def = new DefaultIoFilterChainBuilder();
        def.addLast("executor", executorFilter());
        def.addLast("logger", loggingFilter());
        def.addLast("protocol", protocolCodecFilter());
        return def;
    }

    /**
     * 开启mina的server服务，并设置对应的参数
     *
     * @return
     * @throws IOException
     */
    @Bean
    public IoAcceptor ioAcceptor() throws IOException {
        IoAcceptor nio = new NioSocketAcceptor();
        //设置缓冲区大小
        nio.getSessionConfig().setReadBufferSize(2048);
        //设置空闲状态时间，10秒没操作就进入空闲状态
        nio.getSessionConfig().setIdleTime(IdleStatus.BOTH_IDLE, 10);
        nio.setFilterChainBuilder(defaultIoFilterChainBuilder());
        nio.setHandler(new MinaServerHandler());
        nio.bind(new InetSocketAddress(9098));
        return nio;
    }

}