| /* |
| * Copyright 2016-present 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.isis.io.isispacket.tlv; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.primitives.Bytes; |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import org.onosproject.isis.io.util.IsisUtil; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Representation of IS extended reachability TLV. |
| */ |
| public class IsExtendedReachability extends TlvHeader implements IsisTlv { |
| |
| private List<NeighborForExtendedIs> neighbors = new ArrayList<>(); |
| |
| /** |
| * Creates an instance of IP external reachability TLV. |
| * |
| * @param tlvHeader TLV header |
| */ |
| public IsExtendedReachability(TlvHeader tlvHeader) { |
| this.setTlvType(tlvHeader.tlvType()); |
| this.setTlvLength(tlvHeader.tlvLength()); |
| } |
| |
| /** |
| * Returns neighbor list. |
| * |
| * @return neighbor list |
| */ |
| public List<NeighborForExtendedIs> neighbours() { |
| return neighbors; |
| } |
| |
| /** |
| * Adds the neighbor for extended IS instance to IS extended reachability TLV. |
| * |
| * @param neighbor neighbor for extended IS instance |
| */ |
| public void addNeighbor(NeighborForExtendedIs neighbor) { |
| this.neighbors.add(neighbor); |
| } |
| |
| |
| @Override |
| public void readFrom(ChannelBuffer channelBuffer) { |
| while (channelBuffer.readableBytes() >= (IsisUtil.EIGHT_BYTES + IsisUtil.THREE_BYTES)) { |
| NeighborForExtendedIs extendedIs = new NeighborForExtendedIs(); |
| extendedIs.readFrom(channelBuffer); |
| this.addNeighbor(extendedIs); |
| } |
| } |
| |
| @Override |
| public byte[] asBytes() { |
| byte[] bytes = null; |
| byte[] tlvHeader = tlvHeaderAsByteArray(); |
| byte[] tlvBody = tlvBodyAsBytes(); |
| tlvHeader[1] = (byte) tlvBody.length; |
| bytes = Bytes.concat(tlvHeader, tlvBody); |
| return bytes; |
| } |
| |
| /** |
| * Returns TLV body of IS extended reachability TLV. |
| * |
| * @return byteArray TLV body of IS extended reachability TLV. |
| */ |
| private byte[] tlvBodyAsBytes() { |
| List<Byte> byteList = new ArrayList<>(); |
| for (NeighborForExtendedIs neighbor : this.neighbors) { |
| byteList.addAll(Bytes.asList(neighbor.neighborBodyAsbytes())); |
| } |
| return Bytes.toArray(byteList); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .omitNullValues() |
| .add("neighbors", neighbors) |
| .toString(); |
| } |
| } |