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/*
 * Copyright 2018 Anton Tananaev (anton@traccar.org)
 *
 * 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.
 */
package org.traccar;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelOutboundHandler;
import io.netty.channel.ChannelPromise;

import java.net.SocketAddress;

public class WrapperOutboundHandler implements ChannelOutboundHandler {

    private ChannelOutboundHandler handler;

    public WrapperOutboundHandler(ChannelOutboundHandler handler) {
        this.handler = handler;
    }

    @Override
    public void bind(ChannelHandlerContext ctx, SocketAddress localAddress, ChannelPromise promise) throws Exception {
        handler.bind(ctx, localAddress, promise);
    }

    @Override
    public void connect(
            ChannelHandlerContext ctx, SocketAddress remoteAddress,
            SocketAddress localAddress, ChannelPromise promise) throws Exception {
        handler.connect(ctx, remoteAddress, localAddress, promise);
    }

    @Override
    public void disconnect(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
        handler.disconnect(ctx, promise);
    }

    @Override
    public void close(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
        handler.close(ctx, promise);
    }

    @Override
    public void deregister(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
        handler.deregister(ctx, promise);
    }

    @Override
    public void read(ChannelHandlerContext ctx) throws Exception {
        handler.read(ctx);
    }

    @Override
    public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
        if (msg instanceof NetworkMessage) {
            NetworkMessage nm = (NetworkMessage) msg;
            handler.write(new WrapperContext(ctx, nm.getRemoteAddress()), nm.getMessage(), promise);
        } else {
            handler.write(ctx, msg, promise);
        }
    }

    @Override
    public void flush(ChannelHandlerContext ctx) throws Exception {
        handler.flush(ctx);
    }

    @Override
    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
        handler.handlerAdded(ctx);
    }

    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        handler.handlerRemoved(ctx);
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        handler.exceptionCaught(ctx, cause);
    }

}