| /* |
| * 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 com.google.common.base.MoreObjects; |
| |
| /** |
| * Provides Autonomous System Tlv which contains opaque value (32 Bit AS Number). |
| */ |
| public class AutonomousSystemTlv 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= 512 | Length=4 | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | opaque value (32 Bit AS Number) | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| |
| public static final short TYPE = 512; |
| public static final short LENGTH = 4; |
| |
| private final int asNum; |
| |
| /** |
| * Constructor to initialize asNum. |
| * |
| * @param asNum 32 Bit AS Number |
| */ |
| public AutonomousSystemTlv(int asNum) { |
| this.asNum = asNum; |
| } |
| |
| /** |
| * Returns object of this class with specified asNum. |
| * |
| * @param asNum 32 Bit AS Number |
| * @return object of AutonomousSystemTlv |
| */ |
| public static AutonomousSystemTlv of(final int asNum) { |
| return new AutonomousSystemTlv(asNum); |
| } |
| |
| /** |
| * Returns opaque value of AS Number. |
| * |
| * @return opaque value of AS Number |
| */ |
| public int getAsNum() { |
| return asNum; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(asNum); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (obj instanceof AutonomousSystemTlv) { |
| AutonomousSystemTlv other = (AutonomousSystemTlv) obj; |
| return Objects.equals(asNum, other.asNum); |
| } |
| return false; |
| } |
| |
| @Override |
| public int write(ChannelBuffer c) { |
| int iLenStartIndex = c.writerIndex(); |
| c.writeShort(TYPE); |
| c.writeShort(LENGTH); |
| c.writeInt(asNum); |
| return c.writerIndex() - iLenStartIndex; |
| } |
| |
| /** |
| * Reads the channel buffer and returns object of AutonomousSystemTlv. |
| * |
| * @param c ChannelBuffer |
| * @return object of AutonomousSystemTlv |
| */ |
| public static AutonomousSystemTlv read(ChannelBuffer c) { |
| return AutonomousSystemTlv.of(c.readInt()); |
| } |
| |
| @Override |
| public short getType() { |
| return TYPE; |
| } |
| |
| @Override |
| public int compareTo(Object o) { |
| if (this.equals(o)) { |
| return 0; |
| } |
| return ((Integer) (this.asNum)).compareTo((Integer) (((AutonomousSystemTlv) o).asNum)); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("Type", TYPE) |
| .add("Length", LENGTH) |
| .add("asNum", asNum) |
| .toString(); |
| } |
| } |