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 com.google.common.base.Preconditions;
12 import io.netty.buffer.ByteBuf;
13 import io.netty.buffer.Unpooled;
14 import java.util.HashMap;
16 import org.opendaylight.protocol.bgp.linkstate.spi.LinkstateTlvParser;
17 import org.opendaylight.protocol.bgp.linkstate.spi.NlriTypeCaseParser;
18 import org.opendaylight.protocol.bgp.linkstate.spi.NlriTypeCaseSerializer;
19 import org.opendaylight.protocol.bgp.linkstate.spi.TlvUtil;
20 import org.opendaylight.protocol.concepts.HandlerRegistry;
21 import org.opendaylight.protocol.concepts.MultiRegistry;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.linkstate.ObjectType;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev150210.linkstate.destination.CLinkstateDestination;
24 import org.opendaylight.yangtools.yang.common.QName;
25 import org.slf4j.Logger;
26 import org.slf4j.LoggerFactory;
28 public final class SimpleNlriTypeRegistry {
30 private static final Logger LOG = LoggerFactory.getLogger(SimpleNlriTypeRegistry.class);
31 private static final SimpleNlriTypeRegistry SINGLETON = new SimpleNlriTypeRegistry();
32 private final HandlerRegistry<ObjectType, NlriTypeCaseParser, NlriTypeCaseSerializer> nlriRegistry = new HandlerRegistry<>();
33 private final MultiRegistry<QName, LinkstateTlvParser.LinkstateTlvSerializer<?>> tlvSerializers = new MultiRegistry<>();
34 private final MultiRegistry<Integer, LinkstateTlvParser<?>> tlvParsers = new MultiRegistry<>();
36 private SimpleNlriTypeRegistry() {
39 public static SimpleNlriTypeRegistry getInstance() {
43 public AutoCloseable registerNlriParser(final int type, final NlriTypeCaseParser parser) {
44 return this.nlriRegistry.registerParser(type, parser);
47 public AutoCloseable registerNlriSerializer(final Class<? extends ObjectType> clazzType, final NlriTypeCaseSerializer serializer) {
48 return this.nlriRegistry.registerSerializer(clazzType, serializer);
51 public <T> AutoCloseable registerTlvParser(final int tlvType, final LinkstateTlvParser<T> parser) {
52 return this.tlvParsers.register(tlvType, parser);
55 public <T> AutoCloseable registerTlvSerializer(final QName tlvQName, final LinkstateTlvParser.LinkstateTlvSerializer<T> serializer) {
56 return this.tlvSerializers.register(tlvQName, serializer);
59 public CLinkstateDestination parseNlriType(final ByteBuf buffer) {
60 final int type = buffer.readUnsignedShort();
61 final int length = buffer.readUnsignedShort();
62 final NlriTypeCaseParser parser = this.nlriRegistry.getParser(type);
64 LOG.warn("Linkstate NLRI parser for Type: {} was not found.", type);
67 return parser.parseTypeNlri(buffer.readSlice(length));
70 public void serializeNlriType(final CLinkstateDestination nlri, final ByteBuf byteAggregator) {
74 Preconditions.checkNotNull(byteAggregator);
75 final ObjectType objectType = nlri.getObjectType();
76 final NlriTypeCaseSerializer serializer = this.nlriRegistry.getSerializer((Class<? extends ObjectType>) objectType.getImplementedInterface());
77 if (serializer == null) {
78 LOG.warn("Linkstate NLRI serializer for Type: {} was not found.", objectType.getImplementedInterface());
80 final ByteBuf nlriType = Unpooled.buffer();
81 serializer.serializeTypeNlri(nlri, nlriType);
82 TlvUtil.writeTLV(serializer.getNlriType(), nlriType, byteAggregator);
85 public <T> T parseTlv(final ByteBuf buffer) {
86 return parseTlv(buffer, getParser(buffer));
89 public Map<QName, Object> parseSubTlvs(final ByteBuf buffer) {
90 final Map<QName, Object> tlvs = new HashMap<>();
91 while (buffer.isReadable()) {
92 final LinkstateTlvParser<?> tlvParser = getParser(buffer);
93 final Object tlvBody = parseTlv(buffer, tlvParser);
94 if (tlvBody != null) {
95 tlvs.put(tlvParser.getTlvQName(), tlvBody);
101 private <T> LinkstateTlvParser<T> getParser(final ByteBuf buffer) {
102 Preconditions.checkArgument(buffer != null && buffer.isReadable());
103 final int type = buffer.readUnsignedShort();
104 final LinkstateTlvParser<T> parser = (LinkstateTlvParser<T>) this.tlvParsers.get(type);
105 if (parser == null) {
106 LOG.warn("Linkstate TLV parser for Type: {} was not found.", type);
111 private static <T> T parseTlv(final ByteBuf buffer, final LinkstateTlvParser<T> parser) {
112 if (parser == null) {
115 Preconditions.checkArgument(buffer != null && buffer.isReadable());
116 final int length = buffer.readUnsignedShort();
117 return parser.parseTlvBody(buffer.readSlice(length));
121 public <T> void serializeTlv(final QName tlvQName, final T tlv, final ByteBuf buffer) {
125 Preconditions.checkNotNull(tlvQName);
126 Preconditions.checkNotNull(buffer);
127 final LinkstateTlvParser.LinkstateTlvSerializer<T> tlvSerializer = (LinkstateTlvParser.LinkstateTlvSerializer<T>) this.tlvSerializers.get(tlvQName);
128 if (tlvSerializer == null) {
129 LOG.warn("Linkstate TLV serializer for QName: {} was not found.", tlvQName);
132 final ByteBuf body = Unpooled.buffer();
133 tlvSerializer.serializeTlvBody(tlv, body);
134 TlvUtil.writeTLV(tlvSerializer.getType(), body, buffer);