| /* |
| * 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.lisp.msg.types; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Lists; |
| import io.netty.buffer.ByteBuf; |
| import org.onosproject.lisp.msg.exceptions.LispParseError; |
| import org.onosproject.lisp.msg.exceptions.LispReaderException; |
| import org.onosproject.lisp.msg.exceptions.LispWriterException; |
| import org.onosproject.lisp.msg.types.LispTeRecord.TeRecordWriter; |
| |
| import java.util.List; |
| import java.util.Objects; |
| |
| import static com.google.common.base.MoreObjects.toStringHelper; |
| import static org.onosproject.lisp.msg.types.LispLcafAddress.COMMON_HEADER_SIZE; |
| |
| /** |
| * Traffic Engineering (TE) type LCAF address class. |
| * <p> |
| * Traffic Engineering type is defined in draft-ietf-lisp-lcaf-22 |
| * https://tools.ietf.org/html/draft-ietf-lisp-lcaf-22#page-16 |
| * |
| * <pre> |
| * {@literal |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | AFI = 16387 | Rsvd1 | Flags | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Type = 10 | Rsvd2 | Length | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Rsvd3 |L|P|S| AFI = x | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Reencap Hop 1 ... | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Rsvd3 |L|P|S| AFI = x | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Reencap Hop k ... | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * }</pre> |
| */ |
| public final class LispTeLcafAddress extends LispLcafAddress { |
| |
| private final List<LispTeRecord> records; |
| |
| /** |
| * Initializes Traffic Engineering type LCAF address. |
| * |
| * @param records a collection of Re-encapsulated RLOC addresses |
| */ |
| private LispTeLcafAddress(List<LispTeRecord> records) { |
| super(LispCanonicalAddressFormatEnum.TRAFFIC_ENGINEERING); |
| this.records = records; |
| } |
| |
| /** |
| * Obtains a collection of TE records. |
| * |
| * @return a collection of TE records |
| */ |
| public List<LispTeRecord> getTeRecords() { |
| return ImmutableList.copyOf(records); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(records); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (obj instanceof LispTeLcafAddress) { |
| final LispTeLcafAddress other = (LispTeLcafAddress) obj; |
| return Objects.equals(records, other.records); |
| } |
| return false; |
| } |
| |
| @Override |
| public String toString() { |
| return toStringHelper(this) |
| .add("TE records", records).toString(); |
| } |
| |
| public static final class TeAddressBuilder |
| extends LcafAddressBuilder<TeAddressBuilder> { |
| private List<LispTeRecord> records; |
| |
| /** |
| * Sets a collection of TE records. |
| * |
| * @param records a collection of TE records |
| * @return TeAddressBuilder object |
| */ |
| public TeAddressBuilder withTeRecords(List<LispTeRecord> records) { |
| this.records = records; |
| return this; |
| } |
| |
| /** |
| * Builds LispTeLcafAddress instance. |
| * |
| * @return LispTeLcafAddress instance |
| */ |
| public LispTeLcafAddress build() { |
| return new LispTeLcafAddress(records); |
| } |
| } |
| /** |
| * TE LCAF address reader class. |
| */ |
| public static class TeLcafAddressReader |
| implements LispAddressReader<LispTeLcafAddress> { |
| |
| @Override |
| public LispTeLcafAddress readFrom(ByteBuf byteBuf) |
| throws LispParseError, LispReaderException { |
| |
| LispLcafAddress lcafAddress = LispLcafAddress.deserializeCommon(byteBuf); |
| |
| List<LispTeRecord> teRecords = Lists.newArrayList(); |
| while (byteBuf.readerIndex() - COMMON_HEADER_SIZE < lcafAddress.getLength()) { |
| teRecords.add(new LispTeRecord.TeRecordReader().readFrom(byteBuf)); |
| } |
| |
| return new TeAddressBuilder() |
| .withTeRecords(teRecords) |
| .build(); |
| } |
| } |
| |
| /** |
| * TE LCAF address writer class. |
| */ |
| public static class TeLcafAddressWriter |
| implements LispAddressWriter<LispTeLcafAddress> { |
| |
| @Override |
| public void writeTo(ByteBuf byteBuf, LispTeLcafAddress address) |
| throws LispWriterException { |
| |
| int lcafIndex = byteBuf.writerIndex(); |
| LispLcafAddress.serializeCommon(byteBuf, address); |
| |
| TeRecordWriter writer = new TeRecordWriter(); |
| |
| List<LispTeRecord> teRecords = address.getTeRecords(); |
| for (int i = 0; i < teRecords.size(); i++) { |
| writer.writeTo(byteBuf, teRecords.get(i)); |
| } |
| |
| LispLcafAddress.updateLength(lcafIndex, byteBuf); |
| } |
| } |
| } |