/*
 * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.protocol.bgp.rib.impl;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;

import org.opendaylight.protocol.bgp.parser.spi.MessageRegistry;
import org.opendaylight.yangtools.yang.binding.Notification;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.common.base.Preconditions;

/**
 *
 */
@Sharable
final class BGPMessageToByteEncoder extends MessageToByteEncoder<Notification> {
	private static final Logger LOG = LoggerFactory.getLogger(BGPMessageToByteEncoder.class);
	private final MessageRegistry registry;

	BGPMessageToByteEncoder(final MessageRegistry registry) {
		this.registry = Preconditions.checkNotNull(registry);
	}

	@Override
	protected void encode(final ChannelHandlerContext ctx, final Notification msg, final ByteBuf out) throws Exception {
		LOG.debug("Sent to encode : {}", msg);
		out.writeBytes(this.registry.serializeMessage(msg));
	}
}

/*
 * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.protocol.bgp.rib.impl;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;

import org.opendaylight.protocol.bgp.parser.spi.MessageRegistry;
import org.opendaylight.protocol.util.ByteArray;
import org.opendaylight.yangtools.yang.binding.Notification;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.common.base.Preconditions;

/**
 *
 */
@Sharable
final class BGPMessageToByteEncoder extends MessageToByteEncoder<Notification> {
	private static final Logger LOG = LoggerFactory.getLogger(BGPMessageToByteEncoder.class);
	private final MessageRegistry registry;

	BGPMessageToByteEncoder(final MessageRegistry registry) {
		this.registry = Preconditions.checkNotNull(registry);
	}

	@Override
	protected void encode(final ChannelHandlerContext ctx, final Notification msg, final ByteBuf out) throws Exception {
		LOG.trace("Encoding message: {}", msg);
		final byte[] bytes = this.registry.serializeMessage(msg);
		LOG.trace("Encoded message: {}", ByteArray.bytesToHexString(bytes));
		out.writeBytes(bytes);
		LOG.debug("Message sent to output: {}", msg);
	}
}

Add more detailed traces about BGP encoding process