/* * 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(); } }