/*
 * Copyright (c) 2013 Pantheon Technologies s.r.o. 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.openflowjava.protocol.impl.serialization.factories;

import io.netty.buffer.ByteBuf;

import org.opendaylight.openflowjava.protocol.api.extensibility.OFSerializer;
import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistry;
import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistryInjector;
import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
import org.opendaylight.openflowjava.protocol.impl.util.ListSerializer;
import org.opendaylight.openflowjava.protocol.impl.util.TypeKeyMakerFactory;
import org.opendaylight.openflowjava.util.ByteBufUtils;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketOutInput;

/**
 * Translates PacketOut messages
 * @author michal.polkorab
 * @author timotej.kubas
 */
public class PacketOutInputMessageFactory implements OFSerializer<PacketOutInput>, SerializerRegistryInjector {

    /** Code type of PacketOut message */
    private static final byte MESSAGE_TYPE = 13;
    private static final byte PADDING_IN_PACKET_OUT_MESSAGE = 6;
    private SerializerRegistry registry;

    @Override
    public void serialize(PacketOutInput message, ByteBuf outBuffer) {
        ByteBufUtils.writeOFHeader(MESSAGE_TYPE, message, outBuffer, EncodeConstants.EMPTY_LENGTH);
        outBuffer.writeInt(message.getBufferId().intValue());
        outBuffer.writeInt(message.getInPort().getValue().intValue());
        int actionsLengthIndex = outBuffer.writerIndex();
        outBuffer.writeShort(EncodeConstants.EMPTY_LENGTH);
        outBuffer.writeZero(PADDING_IN_PACKET_OUT_MESSAGE);
        int actionsStartIndex = outBuffer.writerIndex();
        ListSerializer.serializeList(message.getAction(), TypeKeyMakerFactory
                .createActionKeyMaker(EncodeConstants.OF13_VERSION_ID), registry, outBuffer);
        outBuffer.setShort(actionsLengthIndex, outBuffer.writerIndex() - actionsStartIndex);
        byte[] data = message.getData();
        if (data != null) {
            outBuffer.writeBytes(data);
        }
        ByteBufUtils.updateOFHeaderLength(outBuffer);
    }

    @Override
    public void injectSerializerRegistry(SerializerRegistry serializerRegistry) {
        this.registry = serializerRegistry;
    }

}