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 com.google.common.base.Preconditions;
  11 import com.google.common.cache.CacheBuilder;
  12 import com.google.common.cache.CacheLoader;
  13 import com.google.common.cache.LoadingCache;
  14 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContext;
  15 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContextRegistry;
  16 import org.opendaylight.protocol.bgp.rib.spi.RIBExtensionConsumerContext;
  17 import org.opendaylight.protocol.bgp.rib.spi.RIBSupport;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.TablesKey;
  19 import org.opendaylight.yangtools.binding.data.codec.api.BindingCodecTree;
  20 import org.opendaylight.yangtools.binding.data.codec.api.BindingCodecTreeFactory;
  21 import org.opendaylight.yangtools.sal.binding.generator.impl.GeneratedClassLoadingStrategy;
  22 import org.opendaylight.yangtools.sal.binding.generator.util.BindingRuntimeContext;
  23 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  24 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 final class RIBSupportContextRegistryImpl implements RIBSupportContextRegistry {
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(RIBSupportContextRegistryImpl.class);
  31     private final LoadingCache<RIBSupport, RIBSupportContextImpl> contexts = CacheBuilder.newBuilder()
  32             .build(new CacheLoader<RIBSupport, RIBSupportContextImpl>(){
  33
  34                 @Override
  35                 public RIBSupportContextImpl load(final RIBSupport key) {
  36                     return createContext(key);
  37                 }
  38             });
  39
  40     private final RIBExtensionConsumerContext extensionContext;
  41     private final BindingCodecTreeFactory codecFactory;
  42     private final GeneratedClassLoadingStrategy classContext;
  43     private volatile BindingCodecTree latestCodecTree;
  44
  45     private RIBSupportContextRegistryImpl(final RIBExtensionConsumerContext extensions, final BindingCodecTreeFactory codecFactory,
  46             final GeneratedClassLoadingStrategy strategy) {
  47         this.extensionContext = Preconditions.checkNotNull(extensions);
  48         this.codecFactory = Preconditions.checkNotNull(codecFactory);
  49         this.classContext = Preconditions.checkNotNull(strategy);
  50     }
  51
  52     static RIBSupportContextRegistryImpl create(final RIBExtensionConsumerContext extensions,
  53             final BindingCodecTreeFactory codecFactory, final GeneratedClassLoadingStrategy classStrategy) {
  54         return new RIBSupportContextRegistryImpl(extensions, codecFactory, classStrategy);
  55     }
  56
  57     @Override
  58     public RIBSupportContext getRIBSupportContext(final TablesKey key) {
  59         final RIBSupport ribSupport = this.extensionContext.getRIBSupport(key);
  60         if(ribSupport != null) {
  61             return this.contexts.getUnchecked(ribSupport);
  62         }
  63         return null;
  64     }
  65
  66     @Override
  67     public RIBSupportContext getRIBSupportContext(final NodeIdentifierWithPredicates key) {
  68         final RIBSupport ribSupport = this.extensionContext.getRIBSupport(key);
  69         if(ribSupport != null) {
  70             return this.contexts.getUnchecked(ribSupport);
  71         }
  72         return null;
  73     }
  74
  75     private RIBSupportContextImpl createContext(final RIBSupport ribSupport) {
  76         final RIBSupportContextImpl ribContext = new RIBSupportContextImpl(ribSupport);
  77         if(this.latestCodecTree != null) {
  78             // FIXME: Do we need to recalculate latestCodecTree? E.g. new rib support was added
  79             // after bgp was started.
  80             ribContext.onCodecTreeUpdated(this.latestCodecTree);
  81         }
  82         return ribContext;
  83     }
  84
  85     void onSchemaContextUpdated(final SchemaContext context) {
  86         final BindingRuntimeContext runtimeContext = BindingRuntimeContext.create(this.classContext, context);
  87         this.latestCodecTree  = this.codecFactory.create(runtimeContext);
  88         for(final RIBSupportContextImpl rib : this.contexts.asMap().values()) {
  89             try {
  90                 rib.onCodecTreeUpdated(this.latestCodecTree);
  91             } catch (final Exception e) {
  92                 LOG.error("Codec creation threw {}", e.getMessage(), e);
  93             }
  94         }
  95     }
  96 }