2 * Copyright (c) 2014 Contextream, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.lispflowmapping.implementation.serializer;
10 import java.nio.ByteBuffer;
11 import java.util.ArrayList;
13 import org.apache.commons.lang3.BooleanUtils;
14 import org.opendaylight.lispflowmapping.implementation.lisp.exception.LispSerializationException;
15 import org.opendaylight.lispflowmapping.implementation.serializer.address.LispAddressSerializer;
16 import org.opendaylight.lispflowmapping.implementation.util.ByteUtil;
17 import org.opendaylight.lispflowmapping.implementation.util.LispAFIConvertor;
18 import org.opendaylight.lispflowmapping.implementation.util.NumberUtil;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.MapRequest;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.eidrecords.EidRecord;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.eidtolocatorrecords.EidToLocatorRecordBuilder;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.maprequest.ItrRloc;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.maprequest.ItrRlocBuilder;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.maprequest.SourceEidBuilder;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.maprequestnotification.MapRequestBuilder;
26 import org.slf4j.Logger;
27 import org.slf4j.LoggerFactory;
30 * This class deals with deserializing map request from udp to the java object.
32 public class MapRequestSerializer {
34 private static final MapRequestSerializer INSTANCE = new MapRequestSerializer();
35 protected static final Logger LOG = LoggerFactory.getLogger(MapRequestSerializer.class);
37 // Private constructor prevents instantiation from other classes
38 private MapRequestSerializer() {
41 public static MapRequestSerializer getInstance() {
45 public ByteBuffer serialize(MapRequest mapRequest) {
46 int size = Length.HEADER_SIZE;
47 if (mapRequest.getSourceEid() != null && mapRequest.getSourceEid().getLispAddressContainer() != null) {
48 size += LispAddressSerializer.getInstance().getAddressSize(
49 LispAFIConvertor.toAFI(mapRequest.getSourceEid().getLispAddressContainer()));
53 if (mapRequest.getItrRloc() != null) {
54 for (ItrRloc address : mapRequest.getItrRloc()) {
55 size += LispAddressSerializer.getInstance().getAddressSize(LispAFIConvertor.toAFI(address.getLispAddressContainer()));
58 if (mapRequest.getEidRecord() != null) {
59 for (EidRecord record : mapRequest.getEidRecord()) {
60 size += 2 + LispAddressSerializer.getInstance().getAddressSize(LispAFIConvertor.toAFI(record.getLispAddressContainer()));
63 ByteBuffer requestBuffer = ByteBuffer.allocate(size);
64 requestBuffer.put((byte) ((byte) (LispMessageEnum.MapRequest.getValue() << 4)
65 | ByteUtil.boolToBit(BooleanUtils.isTrue(mapRequest.isAuthoritative()), Flags.AUTHORITATIVE)
66 | ByteUtil.boolToBit(BooleanUtils.isTrue(mapRequest.isMapDataPresent()), Flags.MAP_DATA_PRESENT)
67 | ByteUtil.boolToBit(BooleanUtils.isTrue(mapRequest.isProbe()), Flags.PROBE) | ByteUtil.boolToBit(
68 BooleanUtils.isTrue(mapRequest.isSmr()), Flags.SMR)));
69 requestBuffer.put((byte) (ByteUtil.boolToBit(BooleanUtils.isTrue(mapRequest.isPitr()), Flags.PITR) | ByteUtil.boolToBit(
70 BooleanUtils.isTrue(mapRequest.isSmrInvoked()), Flags.SMR_INVOKED)));
71 if (mapRequest.getItrRloc() != null) {
72 int IRC = mapRequest.getItrRloc().size();
76 requestBuffer.put((byte) (IRC));
78 requestBuffer.put((byte) 0);
81 if (mapRequest.getEidRecord() != null) {
82 requestBuffer.put((byte) mapRequest.getEidRecord().size());
84 requestBuffer.put((byte) 0);
87 requestBuffer.putLong(NumberUtil.asLong(mapRequest.getNonce()));
88 if (mapRequest.getSourceEid() != null && mapRequest.getSourceEid().getLispAddressContainer() != null) {
89 LispAddressSerializer.getInstance().serialize(requestBuffer,
90 LispAFIConvertor.toAFI(mapRequest.getSourceEid().getLispAddressContainer()));
92 requestBuffer.putShort((short) 0);
94 if (mapRequest.getItrRloc() != null) {
95 for (ItrRloc address : mapRequest.getItrRloc()) {
96 LispAddressSerializer.getInstance().serialize(requestBuffer, LispAFIConvertor.toAFI(address.getLispAddressContainer()));
99 if (mapRequest.getEidRecord() != null) {
100 for (EidRecord record : mapRequest.getEidRecord()) {
101 requestBuffer.put((byte) 0);
102 requestBuffer.put((byte) record.getMask().byteValue());
103 LispAddressSerializer.getInstance().serialize(requestBuffer, LispAFIConvertor.toAFI(record.getLispAddressContainer()));
106 if (mapRequest.getMapReply() != null) {
107 ByteBuffer replyBuffer = ByteBuffer.allocate(EidToLocatorRecordSerializer.getInstance().getSerializationSize(mapRequest.getMapReply()));
108 EidToLocatorRecordSerializer.getInstance().serialize(replyBuffer, mapRequest.getMapReply());
109 ByteBuffer combinedBuffer = ByteBuffer.allocate(requestBuffer.capacity() + replyBuffer.capacity());
110 combinedBuffer.put(requestBuffer.array());
111 combinedBuffer.put(replyBuffer.array());
112 return combinedBuffer;
114 return requestBuffer;
117 public MapRequest deserialize(ByteBuffer requestBuffer) {
119 MapRequestBuilder builder = new MapRequestBuilder();
121 byte typeAndFlags = requestBuffer.get();
122 builder.setAuthoritative(ByteUtil.extractBit(typeAndFlags, Flags.AUTHORITATIVE));
123 builder.setMapDataPresent(ByteUtil.extractBit(typeAndFlags, Flags.MAP_DATA_PRESENT));
124 builder.setProbe(ByteUtil.extractBit(typeAndFlags, Flags.PROBE));
125 builder.setSmr(ByteUtil.extractBit(typeAndFlags, Flags.SMR));
127 byte moreFlags = requestBuffer.get();
128 builder.setPitr(ByteUtil.extractBit(moreFlags, Flags.PITR));
129 builder.setSmrInvoked(ByteUtil.extractBit(moreFlags, Flags.SMR_INVOKED));
131 int itrCount = ByteUtil.getUnsignedByte(requestBuffer) + 1;
132 int recordCount = ByteUtil.getUnsignedByte(requestBuffer);
133 builder.setNonce(requestBuffer.getLong());
134 builder.setSourceEid(new SourceEidBuilder().setLispAddressContainer(
135 LispAFIConvertor.toContainer(LispAddressSerializer.getInstance().deserialize(requestBuffer)))
138 if (builder.getItrRloc() == null) {
139 builder.setItrRloc(new ArrayList<ItrRloc>());
141 for (int i = 0; i < itrCount; i++) {
142 builder.getItrRloc().add(
143 new ItrRlocBuilder().setLispAddressContainer(
144 LispAFIConvertor.toContainer(LispAddressSerializer.getInstance().deserialize(requestBuffer)))
148 if (builder.getEidRecord() == null) {
149 builder.setEidRecord(new ArrayList<EidRecord>());
151 for (int i = 0; i < recordCount; i++) {
152 builder.getEidRecord().add(EidRecordSerializer.getInstance().deserialize(requestBuffer));
154 if (builder.isMapDataPresent() && requestBuffer.hasRemaining()) {
156 builder.setMapReply(new org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.maprequest.MapReplyBuilder(
157 new EidToLocatorRecordBuilder(EidToLocatorRecordSerializer.getInstance().deserialize(requestBuffer)).build()).build());
158 } catch (RuntimeException re) {
159 LOG.warn("couldn't deserialize map reply encapsulated in map request. {}", re.getMessage());
162 return builder.build();
163 } catch (RuntimeException re) {
164 throw new LispSerializationException("Couldn't deserialize Map-Request (len=" + requestBuffer.capacity() + ")", re);
168 public interface Flags {
169 byte AUTHORITATIVE = 0x08;
170 byte MAP_DATA_PRESENT = 0x04;
174 byte PITR = (byte) 0x80;
175 byte SMR_INVOKED = 0x40;
178 private interface Length {
179 int HEADER_SIZE = 12;