| /* |
| * Copyright 2016-present Open Networking Foundation |
| * |
| * 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.onosproject.bgpio.types; |
| |
| import com.google.common.base.MoreObjects; |
| |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import org.onlab.packet.IpAddress; |
| import org.onosproject.bgpio.exceptions.BgpParseException; |
| import org.onosproject.bgpio.util.Validation; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Objects; |
| |
| /** |
| * Provides implementation of BGP wide community IPV4 neighbour subtlv. |
| */ |
| public class WideCommunityIpV4Neighbour implements BgpValueType { |
| public static final byte TYPE = 8; |
| private List<IpV4Neighbour> ipv4Neighbour; |
| public static final byte IPV4_NEIGHBOUR_SIZE = 8; |
| |
| /** |
| * Creates an instance of wide community ipv4 neighbour subtlv. |
| * |
| */ |
| public WideCommunityIpV4Neighbour() { |
| this.ipv4Neighbour = new ArrayList<>(); |
| } |
| |
| /** |
| * Adds local and remote speakers. |
| * |
| * @param localSpeaker local speaker |
| * @param remoteSpeaker remote speaker |
| */ |
| public void add(IpAddress localSpeaker, IpAddress remoteSpeaker) { |
| ipv4Neighbour.add(new IpV4Neighbour(localSpeaker, remoteSpeaker)); |
| } |
| |
| /** |
| * Deletes local and remote speakers. |
| * |
| * @param localSpeaker local speaker |
| * @param remoteSpeaker remote speaker |
| */ |
| public void remove(IpAddress localSpeaker, IpAddress remoteSpeaker) { |
| ipv4Neighbour.remove(new IpV4Neighbour(localSpeaker, remoteSpeaker)); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(ipv4Neighbour); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (obj == null) { |
| return false; |
| } |
| |
| if (obj instanceof WideCommunityIpV4Neighbour) { |
| WideCommunityIpV4Neighbour other = (WideCommunityIpV4Neighbour) obj; |
| return Objects.equals(ipv4Neighbour, other.ipv4Neighbour); |
| } |
| return false; |
| } |
| |
| @Override |
| public int write(ChannelBuffer c) { |
| int iLenStartIndex = c.writerIndex(); |
| |
| Iterator<IpV4Neighbour> listIterator = ipv4Neighbour.iterator(); |
| c.writeByte(TYPE); |
| |
| int iLengthIndex = c.writerIndex(); |
| c.writeShort(0); |
| |
| while (listIterator.hasNext()) { |
| IpV4Neighbour speaker = listIterator.next(); |
| if (speaker instanceof IpV4Neighbour) { |
| c.writeBytes(speaker.localSpeaker().toOctets()); |
| c.writeBytes(speaker.remoteSpeaker().toOctets()); |
| } |
| } |
| |
| int length = c.writerIndex() - iLengthIndex; |
| c.setShort(iLengthIndex, (short) (length - 2)); |
| |
| return c.writerIndex() - iLenStartIndex; |
| } |
| |
| /** |
| * Reads the channel buffer and returns object of WideCommunityIpV4Neighbour. |
| * |
| * @param c ChannelBuffer |
| * @return object of WideCommunityIpV4Neighbour |
| * @throws BgpParseException on read error |
| */ |
| public static WideCommunityIpV4Neighbour read(ChannelBuffer c) throws BgpParseException { |
| WideCommunityIpV4Neighbour wideCommNeighbour = new WideCommunityIpV4Neighbour(); |
| short length; |
| |
| if (c.readableBytes() == 0) { |
| Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_LENGTH_ERROR, |
| c.readableBytes()); |
| } |
| |
| length = c.readShort(); |
| if (c.readableBytes() == 0) { |
| return wideCommNeighbour; |
| } |
| |
| if (c.readableBytes() < length) { |
| Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_LENGTH_ERROR, |
| c.readableBytes()); |
| } |
| |
| while (c.readableBytes() > 0) { |
| if (c.readableBytes() < IPV4_NEIGHBOUR_SIZE) { |
| Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_LENGTH_ERROR, |
| c.readableBytes()); |
| } |
| |
| IpAddress localSpeaker = IpAddress.valueOf(c.readInt()); |
| IpAddress remoteSpeaker = IpAddress.valueOf(c.readInt()); |
| |
| wideCommNeighbour.add(localSpeaker, remoteSpeaker); |
| |
| } |
| |
| return wideCommNeighbour; |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("ipv4Neighbour", ipv4Neighbour) |
| .toString(); |
| } |
| |
| @Override |
| public int compareTo(Object o) { |
| // TODO Auto-generated method stub |
| return 0; |
| } |
| |
| @Override |
| public short getType() { |
| // TODO Auto-generated method stub |
| return 0; |
| } |
| |
| /* |
| * IpV4Neighbour class contain remote and local speaker. |
| */ |
| private class IpV4Neighbour { |
| private IpAddress localSpeaker; |
| private IpAddress remoteSpeaker; |
| |
| /** |
| * Creates an instance of ipv4 neighbour. |
| * |
| * @param localSpeaker ip address of local speaker |
| * @param remoteSpeaker ip address of remote speaker |
| */ |
| public IpV4Neighbour(IpAddress localSpeaker, IpAddress remoteSpeaker) { |
| this.localSpeaker = localSpeaker; |
| this.remoteSpeaker = remoteSpeaker; |
| } |
| |
| /** |
| * Returns IPV4 neighbour local speaker. |
| * |
| * @return IPV4 neighbour local speaker |
| */ |
| public IpAddress localSpeaker() { |
| return localSpeaker; |
| } |
| |
| /** |
| * Returns IPV4 neighbour remote speaker. |
| * |
| * @return IPV4 neighbour remote speaker |
| */ |
| public IpAddress remoteSpeaker() { |
| return remoteSpeaker; |
| } |
| } |
| } |