ViaVersion/bungee/src/main/java/com/viaversion/viaversion/bungee/util/BungeePipelineUtil.java

82 lines
3.3 KiB
Java

/*
* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
* Copyright (C) 2016-2024 ViaVersion and contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.viaversion.viaversion.bungee.util;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;
import io.netty.handler.codec.MessageToMessageDecoder;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
public class BungeePipelineUtil {
private static final Method DECODE_METHOD;
private static final Method ENCODE_METHOD;
static {
try {
DECODE_METHOD = MessageToMessageDecoder.class.getDeclaredMethod("decode", ChannelHandlerContext.class, Object.class, List.class);
DECODE_METHOD.setAccessible(true);
ENCODE_METHOD = MessageToByteEncoder.class.getDeclaredMethod("encode", ChannelHandlerContext.class, Object.class, ByteBuf.class);
ENCODE_METHOD.setAccessible(true);
} catch (NoSuchMethodException e) {
throw new RuntimeException(e);
}
}
public static List<Object> callDecode(MessageToMessageDecoder decoder, ChannelHandlerContext ctx, ByteBuf input) throws InvocationTargetException {
List<Object> output = new ArrayList<>();
try {
BungeePipelineUtil.DECODE_METHOD.invoke(decoder, ctx, input, output);
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return output;
}
public static ByteBuf callEncode(MessageToByteEncoder encoder, ChannelHandlerContext ctx, ByteBuf input) throws InvocationTargetException {
ByteBuf output = ctx.alloc().buffer();
try {
BungeePipelineUtil.ENCODE_METHOD.invoke(encoder, ctx, input, output);
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return output;
}
public static ByteBuf decompress(ChannelHandlerContext ctx, ByteBuf bytebuf) {
try {
return (ByteBuf) callDecode((MessageToMessageDecoder) ctx.pipeline().get("decompress"), ctx.pipeline().context("decompress"), bytebuf).get(0);
} catch (InvocationTargetException e) {
e.printStackTrace();
return ctx.alloc().buffer();
}
}
public static ByteBuf compress(ChannelHandlerContext ctx, ByteBuf bytebuf) {
try {
return callEncode((MessageToByteEncoder) ctx.pipeline().get("compress"), ctx.pipeline().context("compress"), bytebuf);
} catch (InvocationTargetException e) {
e.printStackTrace();
return ctx.alloc().buffer();
}
}
}