bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/RIBSupportContextRegistryImpl.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.rib.impl;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.cache.CacheBuilder;
  13 import com.google.common.cache.CacheLoader;
  14 import com.google.common.cache.LoadingCache;
  15 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  16 import org.opendaylight.protocol.bgp.rib.impl.spi.CodecsRegistry;
  17 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContext;
  18 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContextRegistry;
  19 import org.opendaylight.protocol.bgp.rib.spi.RIBExtensionConsumerContext;
  20 import org.opendaylight.protocol.bgp.rib.spi.RIBSupport;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.Route;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.Tables;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.TablesKey;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.tables.Routes;
  25 import org.opendaylight.yangtools.yang.binding.ChildOf;
  26 import org.opendaylight.yangtools.yang.binding.ChoiceIn;
  27 import org.opendaylight.yangtools.yang.binding.DataObject;
  28 import org.opendaylight.yangtools.yang.binding.Identifiable;
  29 import org.opendaylight.yangtools.yang.binding.Identifier;
  30 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  31
  32 final class RIBSupportContextRegistryImpl implements RIBSupportContextRegistry {
  33
  34     private final RIBExtensionConsumerContext extensionContext;
  35     private final CodecsRegistry codecs;
  36     private final LoadingCache<RIBSupport<?, ?, ?, ?>, RIBSupportContextImpl> contexts = CacheBuilder.newBuilder()
  37             .build(new CacheLoader<RIBSupport<?, ?, ?, ?>, RIBSupportContextImpl>() {
  38                 @Override
  39                 public RIBSupportContextImpl load(final RIBSupport<?, ?, ?, ?> key) {
  40                     return createRIBSupportContext(key);
  41                 }
  42             });
  43
  44     private RIBSupportContextRegistryImpl(final RIBExtensionConsumerContext extensions, final CodecsRegistry codecs) {
  45         this.extensionContext = requireNonNull(extensions);
  46         this.codecs = requireNonNull(codecs);
  47     }
  48
  49     static RIBSupportContextRegistryImpl create(final RIBExtensionConsumerContext extensions,
  50             final CodecsRegistry codecs) {
  51         return new RIBSupportContextRegistryImpl(extensions, codecs);
  52     }
  53
  54     @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
  55             justification = "https://github.com/spotbugs/spotbugs/issues/811")
  56     private RIBSupportContextImpl createRIBSupportContext(final RIBSupport<?, ?, ?, ?> support) {
  57         return new RIBSupportContextImpl(support, this.codecs);
  58     }
  59
  60     @Override
  61     public <C extends Routes & DataObject & ChoiceIn<Tables>, S extends ChildOf<? super C>,
  62             R extends Route & ChildOf<? super S> & Identifiable<I>, I extends Identifier<R>>
  63             RIBSupport<C, S, R, I> getRIBSupport(final TablesKey key) {
  64         final RIBSupportContext ribSupport = getRIBSupportContext(key);
  65         return ribSupport == null ? null : ribSupport.getRibSupport();
  66     }
  67
  68     @Override
  69     public RIBSupportContext getRIBSupportContext(final TablesKey key) {
  70         final RIBSupport<?, ?, ?, ?> ribSupport = this.extensionContext.getRIBSupport(key);
  71         return ribSupport == null ? null : this.contexts.getUnchecked(ribSupport);
  72     }
  73
  74     @Override
  75     public RIBSupportContext getRIBSupportContext(final NodeIdentifierWithPredicates key) {
  76         final RIBSupport<?, ?, ?, ?> ribSupport = this.extensionContext.getRIBSupport(key);
  77         return ribSupport == null ? null : this.contexts.getUnchecked(ribSupport);
  78     }
  79 }