bgp/inet/src/main/java/org/opendaylight/protocol/bgp/inet/AbstractIPRibSupport.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.inet;
   9
  10 import com.google.common.base.Preconditions;
  11 import com.google.common.collect.ImmutableCollection;
  12 import com.google.common.collect.ImmutableSet;
  13 import java.util.Optional;
  14 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  15 import org.opendaylight.protocol.bgp.parser.spi.PathIdUtil;
  16 import org.opendaylight.protocol.bgp.rib.spi.AbstractRIBSupport;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.Route;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.tables.Routes;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.AddressFamily;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.UnicastSubsequentAddressFamily;
  21 import org.opendaylight.yangtools.yang.binding.DataObject;
  22 import org.opendaylight.yangtools.yang.binding.Identifier;
  23 import org.opendaylight.yangtools.yang.common.QName;
  24 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  25 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  26 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  27 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  28 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  29 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
  30 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
  31 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 /**
  36  * Common {@link org.opendaylight.protocol.bgp.rib.spi.RIBSupport} class for IPv4 and IPv6 addresses.
  37  */
  38 abstract class AbstractIPRibSupport<R extends Route, N extends Identifier>
  39         extends AbstractRIBSupport<R,N> {
  40     private static final Logger LOG = LoggerFactory.getLogger(AbstractIPRibSupport.class);
  41     private final NodeIdentifier prefixNid;
  42     private final NodeIdentifier nlriRoutesList;
  43     private final ImmutableCollection<Class<? extends DataObject>> cacheableNlriObjects;
  44
  45     AbstractIPRibSupport(final Class<? extends DataObject> prefixClass,
  46             final Class<? extends AddressFamily> addressFamilyClass,
  47             final Class<? extends Routes> cazeClass,
  48             final Class<? extends DataObject> containerClass, final Class<? extends Route> listClass,
  49             final QName destinationQname, final QName prefixesQname) {
  50         super(cazeClass, containerClass, listClass, addressFamilyClass,
  51                 UnicastSubsequentAddressFamily.class, destinationQname);
  52         this.nlriRoutesList = new NodeIdentifier(prefixesQname);
  53         this.cacheableNlriObjects = ImmutableSet.of(prefixClass);
  54         this.prefixNid = new NodeIdentifier(QName.create(routeQName(), "prefix").intern());
  55     }
  56
  57     final NodeIdentifier routePrefixIdentifier() {
  58         return this.prefixNid;
  59     }
  60
  61     @Override
  62     public final ImmutableCollection<Class<? extends DataObject>> cacheableNlriObjects() {
  63         return this.cacheableNlriObjects;
  64     }
  65
  66     @Override
  67     protected void processDestination(final DOMDataWriteTransaction tx, final YangInstanceIdentifier routesPath,
  68         final ContainerNode destination, final ContainerNode attributes, final ApplyRoute function) {
  69         if (destination != null) {
  70             final Optional<DataContainerChild<? extends PathArgument, ?>> maybeRoutes =
  71                     destination.getChild(this.nlriRoutesList);
  72             if (maybeRoutes.isPresent()) {
  73                 final DataContainerChild<? extends PathArgument, ?> routes = maybeRoutes.get();
  74                 if (routes instanceof UnkeyedListNode) {
  75                     // Instance identifier to table/(choice routes)/(map of route)
  76                     // FIXME: cache on per-table basis (in TableContext, for example)
  77                     final YangInstanceIdentifier base = routesPath.node(routesContainerIdentifier()).node(routeNid());
  78                     for (final UnkeyedListEntryNode e : ((UnkeyedListNode) routes).getValue()) {
  79                         final NodeIdentifierWithPredicates routeKey = createRouteKey(e);
  80                         function.apply(tx, base, routeKey, e, attributes);
  81                     }
  82                 } else {
  83                     LOG.warn("Routes {} are not a map", routes);
  84                 }
  85             }
  86         }
  87     }
  88
  89     /**
  90      * Prefix and Path Id are the route key.
  91      *
  92      * @param prefixes UnkeyedListEntryNode containing route
  93      * @return Nid with Route Key
  94      */
  95     private NodeIdentifierWithPredicates createRouteKey(final UnkeyedListEntryNode prefixes) {
  96         final Optional<DataContainerChild<? extends PathArgument, ?>> maybePrefixLeaf =
  97                 prefixes.getChild(routePrefixIdentifier());
  98         final Optional<DataContainerChild<? extends PathArgument, ?>> maybePathIdLeaf =
  99                 prefixes.getChild(routePathIdNid());
 100         Preconditions.checkState(maybePrefixLeaf.isPresent());
 101         final Object prefixValue = maybePrefixLeaf.get().getValue();
 102         return PathIdUtil.createNidKey(routeQName(), routeKeyQName(), pathIdQName(), prefixValue, maybePathIdLeaf);
 103     }
 104 }