content: package com.platform.rpc.remoting.net.impl.netty.client;
  
  import com.platform.rpc.remoting.net.impl.netty.codec.NettyEncoder;
  import com.platform.rpc.remoting.invoker.XxlRpcInvokerFactory;
  import com.platform.rpc.remoting.net.common.ConnectClient;
  import com.platform.rpc.remoting.net.impl.netty.codec.NettyDecoder;
  import com.platform.rpc.remoting.net.params.Beat;
  import com.platform.rpc.remoting.net.params.XxlRpcRequest;
  import com.platform.rpc.remoting.net.params.XxlRpcResponse;
  import com.platform.rpc.serialize.Serializer;
  import com.platform.rpc.util.IpUtil;
  import io.netty.bootstrap.Bootstrap;
  import io.netty.channel.Channel;
  import io.netty.channel.ChannelInitializer;
  import io.netty.channel.ChannelOption;
  import io.netty.channel.EventLoopGroup;
  import io.netty.channel.nio.NioEventLoopGroup;
  import io.netty.channel.socket.SocketChannel;
  import io.netty.channel.socket.nio.NioSocketChannel;
  import io.netty.handler.timeout.IdleStateHandler;
  
  import java.util.concurrent.TimeUnit;
  
  /**
   * netty pooled client
   */
  public class NettyConnectClient extends ConnectClient {
  
  
      private EventLoopGroup group;
      private Channel channel;
  
  
      @Override
      public void init(String address, final Serializer serializer, final XxlRpcInvokerFactory xxlRpcInvokerFactory) throws Exception {
          final NettyConnectClient thisClient = this;
  
          Object[] array = IpUtil.parseIpPort(address);
          String host = (String) array[0];
          int port = (int) array[1];
  
  
          this.group = new NioEventLoopGroup();
          Bootstrap bootstrap = new Bootstrap();
          bootstrap.group(group)
                  .channel(NioSocketChannel.class)
                  .handler(new ChannelInitializer<SocketChannel>() {
                      @Override
                      public void initChannel(SocketChannel channel) throws Exception {
                          channel.pipeline()
                                  .addLast(new IdleStateHandler(0,0, Beat.BEAT_INTERVAL, TimeUnit.SECONDS))    // beat N, close if fail
                                  .addLast(new NettyEncoder(XxlRpcRequest.class, serializer))
                                  .addLast(new NettyDecoder(XxlRpcResponse.class, serializer))
                                  .addLast(new NettyClientHandler(xxlRpcInvokerFactory, thisClient));
                      }
                  })
                  .option(ChannelOption.TCP_NODELAY, true)
                  .option(ChannelOption.SO_KEEPALIVE, true)
                  .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 10000);
          this.channel = bootstrap.connect(host, port).sync().channel();
  
          // valid
          if (!isValidate()) {
              close();
              return;
          }
  
          logger.debug(">>>>>>>>>>> xxl-rpc netty client proxy, connect to server success at host:{}, port:{}", host, port);
      }
  
  
      @Override
      public boolean isValidate() {
          if (this.channel != null) {
              return this.channel.isActive();
          }
          return false;
      }
  
      @Override
      public void close() {
          if (this.channel != null && this.channel.isActive()) {
              this.channel.close();        // if this.channel.isOpen()
          }
          if (this.group != null && !this.group.isShutdown()) {
              this.group.shutdownGracefully();
          }
          logger.debug(">>>>>>>>>>> xxl-rpc netty client close.");
      }
  
  
      @Override
      public void send(XxlRpcRequest xxlRpcRequest) throws Exception {
          this.channel.writeAndFlush(xxlRpcRequest).sync();
      }
  }
  