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 org.opendaylight.protocol.bgp.rib.impl.spi.CodecsRegistry;
  16 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContext;
  17 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContextRegistry;
  18 import org.opendaylight.protocol.bgp.rib.spi.RIBExtensionConsumerContext;
  19 import org.opendaylight.protocol.bgp.rib.spi.RIBSupport;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.Route;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.Tables;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.TablesKey;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.tables.Routes;
  24 import org.opendaylight.yangtools.yang.binding.ChildOf;
  25 import org.opendaylight.yangtools.yang.binding.ChoiceIn;
  26 import org.opendaylight.yangtools.yang.binding.DataObject;
  27 import org.opendaylight.yangtools.yang.binding.Identifiable;
  28 import org.opendaylight.yangtools.yang.binding.Identifier;
  29
  30 final class RIBSupportContextRegistryImpl implements RIBSupportContextRegistry {
  31
  32     private final RIBExtensionConsumerContext extensionContext;
  33     private final CodecsRegistry codecs;
  34     private final LoadingCache<RIBSupport<?, ?, ?, ?>, RIBSupportContextImpl> contexts = CacheBuilder.newBuilder()
  35             .build(new CacheLoader<RIBSupport<?, ?, ?, ?>, RIBSupportContextImpl>() {
  36                 @Override
  37                 public RIBSupportContextImpl load(final RIBSupport<?, ?, ?, ?> key) {
  38                     return createRIBSupportContext(key);
  39                 }
  40             });
  41
  42     private RIBSupportContextRegistryImpl(final RIBExtensionConsumerContext extensions, final CodecsRegistry codecs) {
  43         this.extensionContext = requireNonNull(extensions);
  44         this.codecs = requireNonNull(codecs);
  45     }
  46
  47     static RIBSupportContextRegistryImpl create(final RIBExtensionConsumerContext extensions,
  48             final CodecsRegistry codecs) {
  49         return new RIBSupportContextRegistryImpl(extensions, codecs);
  50     }
  51
  52     private RIBSupportContextImpl createRIBSupportContext(final RIBSupport<?, ?, ?, ?> support) {
  53         return new RIBSupportContextImpl(support, this.codecs);
  54     }
  55
  56     @Override
  57     public <C extends Routes & DataObject & ChoiceIn<Tables>, S extends ChildOf<? super C>,
  58             R extends Route & ChildOf<? super S> & Identifiable<I>, I extends Identifier<R>>
  59             RIBSupport<C, S, R, I> getRIBSupport(final TablesKey key) {
  60         final RIBSupportContext ribSupport = getRIBSupportContext(key);
  61         return ribSupport == null ? null : ribSupport.getRibSupport();
  62     }
  63
  64     @Override
  65     public RIBSupportContext getRIBSupportContext(final TablesKey key) {
  66         final RIBSupport<?, ?, ?, ?> ribSupport = this.extensionContext.getRIBSupport(key);
  67         return ribSupport == null ? null : this.contexts.getUnchecked(ribSupport);
  68     }
  69 }