2 * Copyright (c) 2016 Cisco Systems, 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
9 package org.opendaylight.protocol.bgp.linkstate.spi.pojo;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.base.Preconditions;
14 import io.netty.buffer.ByteBuf;
15 import io.netty.buffer.Unpooled;
16 import java.util.HashMap;
18 import org.opendaylight.protocol.bgp.linkstate.spi.LinkstateTlvParser;
19 import org.opendaylight.protocol.bgp.linkstate.spi.NlriTypeCaseParser;
20 import org.opendaylight.protocol.bgp.linkstate.spi.NlriTypeCaseSerializer;
21 import org.opendaylight.protocol.bgp.linkstate.spi.TlvUtil;
22 import org.opendaylight.protocol.concepts.HandlerRegistry;
23 import org.opendaylight.protocol.concepts.MultiRegistry;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.linkstate.ObjectType;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.linkstate.destination.CLinkstateDestination;
26 import org.opendaylight.yangtools.yang.common.QName;
27 import org.slf4j.Logger;
28 import org.slf4j.LoggerFactory;
30 public final class SimpleNlriTypeRegistry {
32 private static final Logger LOG = LoggerFactory.getLogger(SimpleNlriTypeRegistry.class);
33 private static final SimpleNlriTypeRegistry SINGLETON = new SimpleNlriTypeRegistry();
34 private final HandlerRegistry<ObjectType, NlriTypeCaseParser, NlriTypeCaseSerializer> nlriRegistry = new HandlerRegistry<>();
35 private final MultiRegistry<QName, LinkstateTlvParser.LinkstateTlvSerializer<?>> tlvSerializers = new MultiRegistry<>();
36 private final MultiRegistry<Integer, LinkstateTlvParser<?>> tlvParsers = new MultiRegistry<>();
38 private SimpleNlriTypeRegistry() {
41 public static SimpleNlriTypeRegistry getInstance() {
45 public AutoCloseable registerNlriParser(final int type, final NlriTypeCaseParser parser) {
46 return this.nlriRegistry.registerParser(type, parser);
49 public AutoCloseable registerNlriSerializer(final Class<? extends ObjectType> clazzType, final NlriTypeCaseSerializer serializer) {
50 return this.nlriRegistry.registerSerializer(clazzType, serializer);
53 public <T> AutoCloseable registerTlvParser(final int tlvType, final LinkstateTlvParser<T> parser) {
54 return this.tlvParsers.register(tlvType, parser);
57 public <T> AutoCloseable registerTlvSerializer(final QName tlvQName, final LinkstateTlvParser.LinkstateTlvSerializer<T> serializer) {
58 return this.tlvSerializers.register(tlvQName, serializer);
61 public CLinkstateDestination parseNlriType(final ByteBuf buffer) {
62 final int type = buffer.readUnsignedShort();
63 final int length = buffer.readUnsignedShort();
64 final NlriTypeCaseParser parser = this.nlriRegistry.getParser(type);
66 LOG.warn("Linkstate NLRI parser for Type: {} was not found.", type);
69 return parser.parseTypeNlri(buffer.readSlice(length));
72 public void serializeNlriType(final CLinkstateDestination nlri, final ByteBuf byteAggregator) {
76 requireNonNull(byteAggregator);
77 final ObjectType objectType = nlri.getObjectType();
78 final NlriTypeCaseSerializer serializer = this.nlriRegistry.getSerializer((Class<? extends ObjectType>) objectType.getImplementedInterface());
79 if (serializer == null) {
80 LOG.warn("Linkstate NLRI serializer for Type: {} was not found.", objectType.getImplementedInterface());
82 final ByteBuf nlriType = Unpooled.buffer();
83 serializer.serializeTypeNlri(nlri, nlriType);
84 TlvUtil.writeTLV(serializer.getNlriType(), nlriType, byteAggregator);
87 public <T> T parseTlv(final ByteBuf buffer) {
88 return parseTlv(buffer, getParser(buffer));
91 public Map<QName, Object> parseSubTlvs(final ByteBuf buffer) {
92 final Map<QName, Object> tlvs = new HashMap<>();
93 while (buffer.isReadable()) {
94 final LinkstateTlvParser<?> tlvParser = getParser(buffer);
95 final Object tlvBody = parseTlv(buffer, tlvParser);
96 if (tlvBody != null) {
97 tlvs.put(tlvParser.getTlvQName(), tlvBody);
103 private <T> LinkstateTlvParser<T> getParser(final ByteBuf buffer) {
104 Preconditions.checkArgument(buffer != null && buffer.isReadable());
105 final int type = buffer.readUnsignedShort();
106 final LinkstateTlvParser<T> parser = (LinkstateTlvParser<T>) this.tlvParsers.get(type);
107 if (parser == null) {
108 LOG.warn("Linkstate TLV parser for Type: {} was not found.", type);
113 private static <T> T parseTlv(final ByteBuf buffer, final LinkstateTlvParser<T> parser) {
114 if (parser == null) {
117 Preconditions.checkArgument(buffer != null && buffer.isReadable());
118 final int length = buffer.readUnsignedShort();
119 return parser.parseTlvBody(buffer.readSlice(length));
123 public <T> void serializeTlv(final QName tlvQName, final T tlv, final ByteBuf buffer) {
127 requireNonNull(tlvQName);
128 requireNonNull(buffer);
129 final LinkstateTlvParser.LinkstateTlvSerializer<T> tlvSerializer = (LinkstateTlvParser.LinkstateTlvSerializer<T>) this.tlvSerializers.get(tlvQName);
130 if (tlvSerializer == null) {
131 LOG.warn("Linkstate TLV serializer for QName: {} was not found.", tlvQName);
134 final ByteBuf body = Unpooled.buffer();
135 tlvSerializer.serializeTlvBody(tlv, body);
136 TlvUtil.writeTLV(tlvSerializer.getType(), body, buffer);