bgp/extensions/linkstate/src/main/java/org/opendaylight/protocol/bgp/linkstate/impl/attribute/TeLspAttributesParser.java

   1 /*
   2  * Copyright (c) 2015 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.impl.attribute;
   9
  10 import io.netty.buffer.ByteBuf;
  11 import io.netty.buffer.Unpooled;
  12 import org.opendaylight.protocol.bgp.parser.BGPParsingException;
  13 import org.opendaylight.protocol.rsvp.parser.spi.RSVPParsingException;
  14 import org.opendaylight.protocol.rsvp.parser.spi.RSVPTeObjectRegistry;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.path.attribute.LinkStateAttribute;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.path.attribute.link.state.attribute.TeLspAttributesCase;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.path.attribute.link.state.attribute.TeLspAttributesCaseBuilder;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.path.attribute.link.state.attribute.te.lsp.attributes._case.TeLspAttributes;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.linkstate.rev200120.linkstate.path.attribute.link.state.attribute.te.lsp.attributes._case.TeLspAttributesBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.RsvpTeObject;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820._record.route.object.RecordRouteObject;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.admin.status.object.AdminStatusObject;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.association.object.AssociationObject;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.bandwidth.object.BandwidthObject;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.bandwidth.object.bandwidth.object.basic.bandwidth.object._case.BasicBandwidthObject;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.bandwidth.object.bandwidth.object.reoptimization.bandwidth.object._case.ReoptimizationBandwidthObject;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.detour.object.DetourObject;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.detour.object.detour.object.Ipv4DetourObject;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.detour.object.detour.object.Ipv6DetourObject;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.exclude.route.object.ExcludeRouteObject;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.explicit.route.object.ExplicitRouteObject;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.fast.reroute.object.FastRerouteObject;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.fast.reroute.object.fast.reroute.object.basic.fast.reroute.object._case.BasicFastRerouteObject;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.fast.reroute.object.fast.reroute.object.legacy.fast.reroute.object._case.LegacyFastRerouteObject;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.flow.spec.object.FlowSpecObject;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.lsp.attributes.object.LspAttributesObject;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.lsp.required.attributes.object.LspRequiredAttributesObject;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.metric.object.MetricObject;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.primary.path.route.object.PrimaryPathRouteObject;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.protection.object.ProtectionObject;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.protection.object.protection.object.basic.protection.object._case.BasicProtectionObject;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.protection.object.protection.object.dynamic.control.protection.object._case.DynamicControlProtectionObject;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.secondary._record.route.object.SecondaryRecordRouteObject;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.secondary.explicit.route.object.SecondaryExplicitRouteObject;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.session.attribute.object.SessionAttributeObject;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.session.attribute.object.session.attribute.object.basic.session.attribute.object._case.BasicSessionAttributeObject;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.session.attribute.object.session.attribute.object.session.attribute.object.with.resources.affinities._case.SessionAttributeObjectWithResourcesAffinities;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.tspec.object.TspecObject;
  49 import org.slf4j.Logger;
  50 import org.slf4j.LoggerFactory;
  51
  52 final class TeLspAttributesParser {
  53     private static final Logger LOG = LoggerFactory.getLogger(TeLspAttributesParser.class);
  54     //TBD BY IANA
  55     private static final int MAGIC_NUMBER = 99;
  56
  57     private TeLspAttributesParser() {
  58         // Hidden on purpose
  59     }
  60
  61     static LinkStateAttribute parseTeLspAttributes(final RSVPTeObjectRegistry registry, final ByteBuf attributes)
  62             throws BGPParsingException {
  63
  64         final TeLspAttributesBuilder builder = new TeLspAttributesBuilder();
  65         LOG.trace("Initiated parsing TE LSP Objects.");
  66         while (attributes.isReadable()) {
  67             final int length = attributes.readUnsignedShort();
  68             final int classNum = attributes.readUnsignedByte();
  69             final int cType = attributes.readUnsignedByte();
  70             final ByteBuf value = attributes.readSlice(length);
  71             try {
  72                 addObject(builder, registry.parseRSPVTe(classNum, cType, value));
  73             } catch (final RSVPParsingException e) {
  74                 LOG.debug("Parsering TE LSP Object error. class number: {} cType: {} value: {}", classNum, cType, value,
  75                     e);
  76                 throw new BGPParsingException(e.getMessage(), e);
  77             }
  78         }
  79         LOG.trace("Finished parsing TE LSP Objects.");
  80         return new TeLspAttributesCaseBuilder().setTeLspAttributes(builder.build()).build();
  81     }
  82
  83     private static void addObject(final TeLspAttributesBuilder builder, final RsvpTeObject object) {
  84         if (object instanceof TspecObject) {
  85             builder.setTspecObject((TspecObject) object);
  86         } else if (object instanceof FlowSpecObject) {
  87             builder.setFlowSpecObject((FlowSpecObject) object);
  88         } else if (object instanceof SessionAttributeObject) {
  89             builder.setSessionAttributeObject((SessionAttributeObject) object);
  90         } else if (object instanceof ExplicitRouteObject) {
  91             builder.setExplicitRouteObject((ExplicitRouteObject) object);
  92         } else if (object instanceof RecordRouteObject) {
  93             builder.setRecordRouteObject((RecordRouteObject) object);
  94         } else if (object instanceof FastRerouteObject) {
  95             builder.setFastRerouteObject((FastRerouteObject) object);
  96         } else if (object instanceof DetourObject) {
  97             builder.setDetourObject((DetourObject) object);
  98         } else if (object instanceof ExcludeRouteObject) {
  99             builder.setExcludeRouteObject((ExcludeRouteObject) object);
 100         } else if (object instanceof SecondaryExplicitRouteObject) {
 101             builder.setSecondaryExplicitRouteObject((SecondaryExplicitRouteObject) object);
 102         } else if (object instanceof SecondaryRecordRouteObject) {
 103             builder.setSecondaryRecordRouteObject((SecondaryRecordRouteObject) object);
 104         } else if (object instanceof LspAttributesObject) {
 105             builder.setLspAttributesObject((LspAttributesObject) object);
 106         } else if (object instanceof LspRequiredAttributesObject) {
 107             builder.setLspRequiredAttributesObject((LspRequiredAttributesObject) object);
 108         } else if (object instanceof ProtectionObject) {
 109             builder.setProtectionObject((ProtectionObject) object);
 110         } else if (object instanceof AssociationObject) {
 111             builder.setAssociationObject((AssociationObject) object);
 112         } else if (object instanceof PrimaryPathRouteObject) {
 113             builder.setPrimaryPathRouteObject((PrimaryPathRouteObject) object);
 114         } else if (object instanceof AdminStatusObject) {
 115             builder.setAdminStatusObject((AdminStatusObject) object);
 116         } else if (object instanceof BandwidthObject) {
 117             builder.setBandwidthObject((BandwidthObject) object);
 118         } else if (object instanceof MetricObject) {
 119             builder.setMetricObject((MetricObject) object);
 120         } else {
 121             throw new IllegalStateException("Unhandled TE LSP Object " + object);
 122         }
 123     }
 124
 125
 126     static void serializeLspAttributes(final RSVPTeObjectRegistry registry, final TeLspAttributesCase linkState,
 127             final ByteBuf output) {
 128         LOG.trace("Started serializing TE LSP Objects");
 129         final ByteBuf byteBuf = Unpooled.buffer();
 130
 131         final TeLspAttributes teLspAttribute = linkState.getTeLspAttributes();
 132         final TspecObject tSpec = teLspAttribute.getTspecObject();
 133         registry.serializeRSPVTe(tSpec, byteBuf);
 134
 135         final FlowSpecObject flow = teLspAttribute.getFlowSpecObject();
 136         registry.serializeRSPVTe(flow, byteBuf);
 137
 138         final SessionAttributeObject sao = teLspAttribute.getSessionAttributeObject();
 139         if (sao instanceof BasicSessionAttributeObject) {
 140             registry.serializeRSPVTe((BasicSessionAttributeObject) sao, byteBuf);
 141         } else if (sao instanceof SessionAttributeObjectWithResourcesAffinities) {
 142             registry.serializeRSPVTe((SessionAttributeObjectWithResourcesAffinities) sao, byteBuf);
 143         }
 144
 145         final ExplicitRouteObject ero = teLspAttribute.getExplicitRouteObject();
 146         registry.serializeRSPVTe(ero, byteBuf);
 147
 148         final RecordRouteObject rro = teLspAttribute.getRecordRouteObject();
 149         registry.serializeRSPVTe(rro, byteBuf);
 150
 151         final FastRerouteObject fro = teLspAttribute.getFastRerouteObject();
 152         if (fro instanceof BasicFastRerouteObject) {
 153             registry.serializeRSPVTe((BasicFastRerouteObject) fro, byteBuf);
 154         } else if (fro instanceof LegacyFastRerouteObject) {
 155             registry.serializeRSPVTe((LegacyFastRerouteObject) fro, byteBuf);
 156         }
 157
 158         final DetourObject dto = teLspAttribute.getDetourObject();
 159         if (dto instanceof Ipv4DetourObject) {
 160             registry.serializeRSPVTe((Ipv4DetourObject) dto, byteBuf);
 161         } else if (dto instanceof Ipv6DetourObject) {
 162             registry.serializeRSPVTe((Ipv6DetourObject) dto, byteBuf);
 163         }
 164
 165         final ExcludeRouteObject exro = teLspAttribute.getExcludeRouteObject();
 166         registry.serializeRSPVTe(exro, byteBuf);
 167
 168         final SecondaryExplicitRouteObject sero = teLspAttribute.getSecondaryExplicitRouteObject();
 169         registry.serializeRSPVTe(sero, byteBuf);
 170
 171         final SecondaryRecordRouteObject srro = teLspAttribute.getSecondaryRecordRouteObject();
 172         registry.serializeRSPVTe(srro, byteBuf);
 173
 174         final LspAttributesObject lspAtt = teLspAttribute.getLspAttributesObject();
 175         registry.serializeRSPVTe(lspAtt, byteBuf);
 176
 177         final LspRequiredAttributesObject rao = teLspAttribute.getLspRequiredAttributesObject();
 178         registry.serializeRSPVTe(rao, byteBuf);
 179
 180         final ProtectionObject po = teLspAttribute.getProtectionObject();
 181         if (po instanceof DynamicControlProtectionObject) {
 182             registry.serializeRSPVTe((DynamicControlProtectionObject) po, byteBuf);
 183         } else if (po instanceof BasicProtectionObject) {
 184             registry.serializeRSPVTe((BasicProtectionObject) po, byteBuf);
 185         }
 186
 187         final AssociationObject aso = teLspAttribute.getAssociationObject();
 188         registry.serializeRSPVTe(aso, byteBuf);
 189
 190         final PrimaryPathRouteObject ppr = teLspAttribute.getPrimaryPathRouteObject();
 191         registry.serializeRSPVTe(ppr, byteBuf);
 192
 193         final AdminStatusObject adso = teLspAttribute.getAdminStatusObject();
 194         registry.serializeRSPVTe(adso, byteBuf);
 195
 196         final BandwidthObject bo = teLspAttribute.getBandwidthObject();
 197         if (bo instanceof BasicBandwidthObject) {
 198             registry.serializeRSPVTe((BasicBandwidthObject) bo, byteBuf);
 199         } else if (bo instanceof ReoptimizationBandwidthObject) {
 200             registry.serializeRSPVTe((ReoptimizationBandwidthObject) bo, byteBuf);
 201         }
 202
 203         final MetricObject mo = teLspAttribute.getMetricObject();
 204         registry.serializeRSPVTe(mo, byteBuf);
 205
 206
 207         output.writeShort(MAGIC_NUMBER);
 208         output.writeShort(byteBuf.readableBytes());
 209         output.writeBytes(byteBuf);
 210         LOG.trace("Finished serializing TE LSP Objects");
 211     }
 212 }