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.rev171207.rib.TablesKey;
  21
  22 final class RIBSupportContextRegistryImpl implements RIBSupportContextRegistry {
  23
  24     private final RIBExtensionConsumerContext extensionContext;
  25     private final CodecsRegistry codecs;
  26     private final LoadingCache<RIBSupport, RIBSupportContextImpl> contexts = CacheBuilder.newBuilder()
  27             .build(new CacheLoader<RIBSupport, RIBSupportContextImpl>() {
  28                 @Override
  29                 public RIBSupportContextImpl load(final RIBSupport key) {
  30                     return createRIBSupportContext(key);
  31                 }
  32             });
  33
  34     private RIBSupportContextRegistryImpl(final RIBExtensionConsumerContext extensions, final CodecsRegistry codecs) {
  35         this.extensionContext = requireNonNull(extensions);
  36         this.codecs = requireNonNull(codecs);
  37     }
  38
  39     static RIBSupportContextRegistryImpl create(final RIBExtensionConsumerContext extensions, final CodecsRegistry codecs) {
  40         return new RIBSupportContextRegistryImpl(extensions, codecs);
  41     }
  42
  43     private RIBSupportContextImpl createRIBSupportContext(final RIBSupport support) {
  44         return new RIBSupportContextImpl(support, this.codecs);
  45     }
  46
  47     @Override
  48     public RIBSupport getRIBSupport(final TablesKey key) {
  49         final RIBSupportContext ribSupport = getRIBSupportContext(key);
  50         if (ribSupport != null) {
  51             return ribSupport.getRibSupport();
  52         }
  53         return null;
  54     }
  55
  56     @Override
  57     public RIBSupportContext getRIBSupportContext(final TablesKey key) {
  58         final RIBSupport ribSupport = this.extensionContext.getRIBSupport(key);
  59         if (ribSupport != null) {
  60             return this.contexts.getUnchecked(ribSupport);
  61         }
  62         return null;
  63     }
  64 }