io.netlibs.bgp.netty.protocol.refresh.RouteRefreshPacket.java Source code

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Here is the source code for io.netlibs.bgp.netty.protocol.refresh.RouteRefreshPacket.java

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/**
 *  Copyright 2012 Rainer Bieniek (Rainer.Bieniek@web.de)
 *
 *  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.
 *
 * File: org.bgp4j.netty.protocol.RouteRefreshPacket.java
 */
package io.netlibs.bgp.netty.protocol.refresh;

import org.apache.commons.lang3.builder.ToStringBuilder;

import io.netlibs.bgp.netty.protocol.BGPv4Packet;
import io.netlibs.bgp.netty.protocol.BGPv4PacketVisitor;
import io.netlibs.bgp.protocol.AddressFamily;
import io.netlibs.bgp.protocol.BGPv4Constants;
import io.netlibs.bgp.protocol.ORFEntry;
import io.netlibs.bgp.protocol.ORFType;
import io.netlibs.bgp.protocol.OutboundRouteFilter;
import io.netlibs.bgp.protocol.SubsequentAddressFamily;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;

/**
 * @author Rainer Bieniek (Rainer.Bieniek@web.de)
 *
 */
public class RouteRefreshPacket extends BGPv4Packet {

    private AddressFamily addressFamily;
    private SubsequentAddressFamily subsequentAddressFamily;
    private OutboundRouteFilter outboundRouteFilter;

    public RouteRefreshPacket() {
    }

    public RouteRefreshPacket(final AddressFamily addressFamily,
            final SubsequentAddressFamily subsequentAddressFamily) {
        this.setAddressFamily(addressFamily);
        this.setSubsequentAddressFamily(subsequentAddressFamily);
    }

    public RouteRefreshPacket(final AddressFamily addressFamily,
            final SubsequentAddressFamily subsequentAddressFamily, final OutboundRouteFilter outboundRouteFilter) {
        this(addressFamily, subsequentAddressFamily);

        this.setOutboundRouteFilter(outboundRouteFilter);
    }

    /* (non-Javadoc)
     * @see org.bgp4j.netty.protocol.BGPv4Packet#encodePayload()
     */
    @Override
    protected ByteBuf encodePayload() {

        final ByteBuf buffer = Unpooled.buffer(this.calculateEncodingLength());

        buffer.writeShort(this.getAddressFamily().toCode());
        buffer.writeByte(0);
        buffer.writeByte(this.getSubsequentAddressFamily().toCode());

        if (this.outboundRouteFilter != null) {
            buffer.writeByte(this.outboundRouteFilter.getRefreshType().toCode());

            for (final ORFType type : this.outboundRouteFilter.getEntries().keySet()) {
                int entriesLength = 0;

                for (final ORFEntry entry : this.outboundRouteFilter.getEntries().get(type)) {
                    entriesLength += ORFEntryCodec.calculateEncodingLength(entry);
                }

                buffer.writeByte(type.toCode());
                buffer.writeShort(entriesLength);

                for (final ORFEntry entry : this.outboundRouteFilter.getEntries().get(type)) {
                    buffer.writeBytes(ORFEntryCodec.encodeORFEntry(entry));
                }

            }
        }

        return buffer;
    }

    public int calculateEncodingLength() {
        int size = 4; // 2 octet AFI + 1 octet reserved + 1 octet SAFI

        if (this.outboundRouteFilter != null) {
            size++; // when-to-refresh-octet

            for (final ORFType type : this.outboundRouteFilter.getEntries().keySet()) {
                size += 3; // 1 octet ORF type + 2 octets ORF entries length

                for (final ORFEntry entry : this.outboundRouteFilter.getEntries().get(type)) {
                    size += ORFEntryCodec.calculateEncodingLength(entry);
                }
            }
        }

        return size;
    }

    /* (non-Javadoc)
     * @see org.bgp4j.netty.protocol.BGPv4Packet#getType()
     */
    @Override
    public int getType() {
        return BGPv4Constants.BGP_PACKET_TYPE_ROUTE_REFRESH;
    }

    /**
     * @return the addressFamily
     */
    public AddressFamily getAddressFamily() {
        return this.addressFamily;
    }

    /**
     * @param addressFamily the addressFamily to set
     */
    public void setAddressFamily(final AddressFamily addressFamily) {
        this.addressFamily = addressFamily;
    }

    /**
     * @return the subsequentAddressFamily
     */
    public SubsequentAddressFamily getSubsequentAddressFamily() {
        return this.subsequentAddressFamily;
    }

    /**
     * @param subsequentAddressFamily the subsequentAddressFamily to set
     */
    public void setSubsequentAddressFamily(final SubsequentAddressFamily subsequentAddressFamily) {
        this.subsequentAddressFamily = subsequentAddressFamily;
    }

    /**
     * @return the outboundRouteFilter
     */
    public OutboundRouteFilter getOutboundRouteFilter() {
        return this.outboundRouteFilter;
    }

    /**
     * @param outboundRouteFilter the outboundRouteFilter to set
     */
    public void setOutboundRouteFilter(final OutboundRouteFilter outboundRouteFilter) {
        this.outboundRouteFilter = outboundRouteFilter;
    }

    @Override
    public <T> T apply(final BGPv4PacketVisitor<T> visitor) {
        return visitor.visit(this);
    }

    @Override
    public String toString() {
        return (new ToStringBuilder(this)).append("type", this.getType())
                .append("addressFamiliy", this.addressFamily)
                .append("outboundRouteFilter", this.outboundRouteFilter)
                .append("subsequentAddressFamily", this.subsequentAddressFamily).toString();
    }
}