| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * 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 java.util.Objects; |
| |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.base.MoreObjects; |
| |
| /** |
| * Provides AreaID Tlv which contains opaque value (32 Bit Area-ID). |
| */ |
| public class AreaIDTlv implements BGPValueType { |
| |
| /* Reference :draft-ietf-idr-ls-distribution-11 |
| * 0 1 2 3 |
| 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Type= 514 | Length=4 | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | opaque value (32 Bit Area-ID) | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| |
| protected static final Logger log = LoggerFactory.getLogger(AreaIDTlv.class); |
| |
| public static final short TYPE = 514; |
| public static final short LENGTH = 4; |
| |
| private final int areaID; |
| |
| /** |
| * Constructor to initialize areaID. |
| * |
| * @param areaID of BGP AreaID Tlv |
| */ |
| public AreaIDTlv(int areaID) { |
| this.areaID = areaID; |
| } |
| |
| /** |
| * Returns object of this class with specified areaID. |
| * |
| * @param areaID opaque value of area id |
| * @return object of AreaIDTlv |
| */ |
| public static AreaIDTlv of(final int areaID) { |
| return new AreaIDTlv(areaID); |
| } |
| |
| /** |
| * Returns opaque value of area id. |
| * |
| * @return opaque value of area id |
| */ |
| public int getAreaID() { |
| return areaID; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(areaID); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (obj instanceof AreaIDTlv) { |
| AreaIDTlv other = (AreaIDTlv) obj; |
| return Objects.equals(areaID, other.areaID); |
| } |
| return false; |
| } |
| |
| @Override |
| public int write(ChannelBuffer c) { |
| int iLenStartIndex = c.writerIndex(); |
| c.writeShort(TYPE); |
| c.writeShort(LENGTH); |
| c.writeInt(areaID); |
| return c.writerIndex() - iLenStartIndex; |
| } |
| |
| /** |
| * Reads the channel buffer and returns object of AreaIDTlv. |
| * |
| * @param cb ChannelBuffer |
| * @return object of AreaIDTlv |
| */ |
| public static AreaIDTlv read(ChannelBuffer cb) { |
| return AreaIDTlv.of(cb.readInt()); |
| } |
| |
| @Override |
| public short getType() { |
| return TYPE; |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("Type", TYPE) |
| .add("Length", LENGTH) |
| .add("Value", areaID) |
| .toString(); |
| } |
| } |