bgp/extensions/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/spi/pojo/SimpleBindingSubTlvsRegistry.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.protocol.bgp.linkstate.spi.pojo;
   9
  10 import io.netty.buffer.ByteBuf;
  11 import java.util.ArrayList;
  12 import java.util.List;
  13 import org.opendaylight.protocol.bgp.linkstate.spi.BindingSubTlvsParser;
  14 import org.opendaylight.protocol.bgp.linkstate.spi.BindingSubTlvsSerializer;
  15 import org.opendaylight.protocol.concepts.HandlerRegistry;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.ProtocolId;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev200120.binding.sid.tlv.BindingSubTlvs;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev200120.binding.sid.tlv.BindingSubTlvsBuilder;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.segment.routing.ext.rev200120.binding.sub.tlvs.BindingSubTlv;
  20 import org.opendaylight.yangtools.concepts.Registration;
  21 import org.opendaylight.yangtools.yang.binding.DataContainer;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 public final class SimpleBindingSubTlvsRegistry {
  26     private static final Logger LOG = LoggerFactory.getLogger(SimpleBindingSubTlvsRegistry.class);
  27     private static final SimpleBindingSubTlvsRegistry SINGLETON = new SimpleBindingSubTlvsRegistry();
  28     private final HandlerRegistry<DataContainer, BindingSubTlvsParser, BindingSubTlvsSerializer> handlers =
  29             new HandlerRegistry<>();
  30
  31     private SimpleBindingSubTlvsRegistry() {
  32     }
  33
  34     public static SimpleBindingSubTlvsRegistry getInstance() {
  35         return SINGLETON;
  36     }
  37
  38     public Registration registerBindingSubTlvsParser(final int bindingSubTlvsType, final BindingSubTlvsParser parser) {
  39         return this.handlers.registerParser(bindingSubTlvsType, parser);
  40     }
  41
  42     public Registration registerBindingSubTlvsSerializer(final Class<? extends BindingSubTlv> esiType,
  43             final BindingSubTlvsSerializer serializer) {
  44         return this.handlers.registerSerializer(esiType, serializer);
  45     }
  46
  47     public void serializeBindingSubTlvs(final List<BindingSubTlvs> bindingSubTlvs, final ByteBuf aggregator) {
  48         if (bindingSubTlvs != null) {
  49             for (final BindingSubTlvs subTlv : bindingSubTlvs) {
  50                 final BindingSubTlv bindingSubTlv = subTlv.getBindingSubTlv();
  51                 final BindingSubTlvsSerializer serializer = this.handlers.getSerializer(
  52                     bindingSubTlv.implementedInterface());
  53                 if (serializer == null) {
  54                     LOG.info("Unknown binding sub Tlv type {}", subTlv);
  55                     return;
  56                 }
  57                 serializer.serializeSubTlv(bindingSubTlv, aggregator);
  58             }
  59         }
  60     }
  61
  62     public List<BindingSubTlvs> parseBindingSubTlvs(final ByteBuf buffer, final ProtocolId protocolId) {
  63         final List<BindingSubTlvs> subTlvs = new ArrayList<>();
  64         if (buffer != null) {
  65             while (buffer.isReadable()) {
  66                 final int type = buffer.readUnsignedShort();
  67                 final int length = buffer.readUnsignedShort();
  68                 final ByteBuf slice = buffer.readSlice(length);
  69                 final BindingSubTlvsParser parser = this.handlers.getParser(type);
  70                 if (parser == null) {
  71                     return null;
  72                 }
  73                 subTlvs.add(new BindingSubTlvsBuilder().setBindingSubTlv(parser.parseSubTlv(slice, protocolId))
  74                     .build());
  75             }
  76         }
  77         return subTlvs;
  78     }
  79 }