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/*
 * Copyright (C) 2020 Graylog, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Server Side Public License, version 1,
 * as published by MongoDB, Inc.
 *
 * 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
 * Server Side Public License for more details.
 *
 * You should have received a copy of the Server Side Public License
 * along with this program. If not, see
 * .
 */
package org.graylog2.inputs.transports.netty;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import org.graylog2.plugin.inputs.MessageInput;
import org.graylog2.plugin.inputs.transports.NettyTransport;
import org.graylog2.plugin.journal.RawMessage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.net.InetSocketAddress;

public class RawMessageHandler extends SimpleChannelInboundHandler {
    private static final Logger LOG = LoggerFactory.getLogger(NettyTransport.class);

    private final MessageInput input;

    public RawMessageHandler(MessageInput input) {
        this.input = input;
    }

    @Override
    protected void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
        final byte[] bytes = new byte[msg.readableBytes()];
        msg.readBytes(bytes);
        final RawMessage raw = new RawMessage(bytes, (InetSocketAddress) ctx.channel().remoteAddress());
        input.processRawMessage(raw);
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        LOG.debug("Could not handle message, closing connection: {}", cause);
        ctx.channel().close();
        super.exceptionCaught(ctx, cause);
    }
}