| /* |
| * 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.attr; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.ListIterator; |
| import java.util.Objects; |
| |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import org.onosproject.bgpio.exceptions.BgpParseException; |
| import org.onosproject.bgpio.types.BgpErrorType; |
| import org.onosproject.bgpio.types.BgpValueType; |
| import org.onosproject.bgpio.util.Validation; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.base.MoreObjects; |
| |
| /** |
| * BGP Multi-Topology ID of the LS attribute. |
| */ |
| public class BgpAttrNodeMultiTopologyId implements BgpValueType { |
| |
| private static final Logger log = LoggerFactory |
| .getLogger(BgpAttrNodeMultiTopologyId.class); |
| |
| public static final int ATTRNODE_MULTITOPOLOGY = 263; |
| |
| /* Opaque Node Attribute */ |
| private List<Short> multiTopologyId = new ArrayList<Short>(); |
| |
| /** |
| * Constructor to initialize the Node attribute multi-topology ID. |
| * |
| * @param multiTopologyId multi-topology ID |
| */ |
| public BgpAttrNodeMultiTopologyId(List<Short> multiTopologyId) { |
| this.multiTopologyId = multiTopologyId; |
| } |
| |
| /** |
| * Returns object of this class with specified values. |
| * |
| * @param multiTopologyId Prefix Metric |
| * @return object of BgpAttrNodeMultiTopologyId |
| */ |
| public static BgpAttrNodeMultiTopologyId of(ArrayList<Short> multiTopologyId) { |
| return new BgpAttrNodeMultiTopologyId(multiTopologyId); |
| } |
| |
| /** |
| * Reads the Multi-topology ID of Node attribute. |
| * |
| * @param cb ChannelBuffer |
| * @return Constructor of BgpAttrNodeMultiTopologyId |
| * @throws BgpParseException while parsing BgpAttrNodeMultiTopologyId |
| */ |
| public static BgpAttrNodeMultiTopologyId read(ChannelBuffer cb) |
| throws BgpParseException { |
| ArrayList<Short> multiTopologyId = new ArrayList<Short>(); |
| short tempMultiTopologyId; |
| short lsAttrLength = cb.readShort(); |
| int len = lsAttrLength / 2; // Length is 2*n and n is the number of MT-IDs |
| |
| if (cb.readableBytes() < lsAttrLength) { |
| Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, |
| BgpErrorType.ATTRIBUTE_LENGTH_ERROR, |
| lsAttrLength); |
| } |
| |
| for (int i = 0; i < len; i++) { |
| tempMultiTopologyId = cb.readShort(); |
| multiTopologyId.add(new Short(tempMultiTopologyId)); |
| } |
| |
| return new BgpAttrNodeMultiTopologyId(multiTopologyId); |
| } |
| |
| /** |
| * to get the multi-topology ID. |
| * |
| * @return multitopology ID |
| */ |
| public List<Short> attrMultiTopologyId() { |
| return multiTopologyId; |
| } |
| |
| @Override |
| public short getType() { |
| return ATTRNODE_MULTITOPOLOGY; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(multiTopologyId); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (obj instanceof BgpAttrNodeMultiTopologyId) { |
| BgpAttrNodeMultiTopologyId other = (BgpAttrNodeMultiTopologyId) obj; |
| return Objects.equals(multiTopologyId, other.multiTopologyId); |
| } |
| return false; |
| } |
| |
| @Override |
| public int write(ChannelBuffer cb) { |
| // TODO This will be implemented in the next version |
| return 0; |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .omitNullValues() |
| .add("multiTopologyId", multiTopologyId) |
| .toString(); |
| } |
| |
| @Override |
| public int compareTo(Object o) { |
| if (this.equals(o)) { |
| return 0; |
| } |
| int countOtherSubTlv = ((BgpAttrNodeMultiTopologyId) o).multiTopologyId.size(); |
| int countObjSubTlv = multiTopologyId.size(); |
| if (countOtherSubTlv != countObjSubTlv) { |
| if (countOtherSubTlv > countObjSubTlv) { |
| return 1; |
| } else { |
| return -1; |
| } |
| } |
| ListIterator<Short> listIterator = multiTopologyId.listIterator(); |
| ListIterator<Short> listIteratorOther = ((BgpAttrNodeMultiTopologyId) o).multiTopologyId.listIterator(); |
| while (listIterator.hasNext()) { |
| short id = listIterator.next(); |
| short id1 = listIteratorOther.next(); |
| if (((Short) id).compareTo((Short) id1) != 0) { |
| return ((Short) id).compareTo((Short) id1); |
| } |
| } |
| return 0; |
| } |
| } |