package cpw.mods.fml.common.network.simpleimpl;
import org.apache.logging.log4j.Level;
import net.minecraft.network.INetHandler;
import com.google.common.base.Preconditions;
import cpw.mods.fml.common.FMLLog;
import cpw.mods.fml.common.network.FMLOutboundHandler;
import cpw.mods.fml.common.network.NetworkRegistry;
import cpw.mods.fml.relauncher.Side;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
public class SimpleChannelHandlerWrapper<REQ extends IMessage, REPLY extends IMessage> extends SimpleChannelInboundHandler<REQ> {
private final IMessageHandler<? super REQ, ? extends REPLY> messageHandler;
private final Side side;
public SimpleChannelHandlerWrapper(Class<? extends IMessageHandler<? super REQ, ? extends REPLY>> handler, Side side, Class<REQ> requestType)
{
this(SimpleNetworkWrapper.instantiate(handler), side, requestType);
}
public SimpleChannelHandlerWrapper(IMessageHandler<? super REQ, ? extends REPLY> handler, Side side, Class<REQ> requestType)
{
super(requestType);
messageHandler = Preconditions.checkNotNull(handler, "IMessageHandler must not be null");
this.side = side;
}
@Override
protected void channelRead0(ChannelHandlerContext ctx, REQ msg) throws Exception
{
INetHandler iNetHandler = ctx.channel().attr(NetworkRegistry.NET_HANDLER).get();
MessageContext context = new MessageContext(iNetHandler, side);
REPLY result = messageHandler.onMessage(msg, context);
if (result != null)
{
ctx.channel().attr(FMLOutboundHandler.FML_MESSAGETARGET).set(FMLOutboundHandler.OutboundTarget.REPLY);
ctx.writeAndFlush(result).addListener(ChannelFutureListener.FIRE_EXCEPTION_ON_FAILURE);
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception
{
FMLLog.log(Level.ERROR, cause, "SimpleChannelHandlerWrapper exception");
super.exceptionCaught(ctx, cause);
}
}