bgp/rib-spi/src/main/java/org/opendaylight/protocol/bgp/rib/spi/SimpleRIBExtensionProviderContext.java

   1 /*
   2  * Copyright (c) 2013 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.spi;
   9
  10
  11 import com.google.common.base.Preconditions;
  12 import java.util.HashSet;
  13 import java.util.Set;
  14 import java.util.concurrent.ConcurrentHashMap;
  15 import java.util.concurrent.ConcurrentMap;
  16 import org.opendaylight.protocol.concepts.AbstractRegistration;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.TablesKey;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.AddressFamily;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.SubsequentAddressFamily;
  20 import org.opendaylight.yangtools.sal.binding.generator.impl.GeneratedClassLoadingStrategy;
  21 import org.opendaylight.yangtools.sal.binding.generator.impl.ModuleInfoBackedContext;
  22 import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
  23 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
  24 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 public class SimpleRIBExtensionProviderContext implements RIBExtensionProviderContext {
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(SimpleRIBExtensionProviderContext.class);
  31
  32     private final ConcurrentMap<TablesKey, AdjRIBsFactory> factories = new ConcurrentHashMap<>();
  33     private final ConcurrentMap<TablesKey, RIBSupport> supports = new ConcurrentHashMap<>();
  34     private final ConcurrentMap<NodeIdentifierWithPredicates, RIBSupport> domSupports = new ConcurrentHashMap<>();
  35
  36     private final ModuleInfoBackedContext classLoadingStrategy = ModuleInfoBackedContext.create();
  37
  38
  39     @Override
  40     public final synchronized AbstractRegistration registerAdjRIBsInFactory(final Class<? extends AddressFamily> afi,
  41             final Class<? extends SubsequentAddressFamily> safi, final AdjRIBsFactory factory) {
  42         final TablesKey key = new TablesKey(afi, safi);
  43
  44         if (this.factories.containsKey(key)) {
  45             throw new IllegalArgumentException("Specified AFI/SAFI combination is already registered");
  46         }
  47
  48         this.factories.put(key, factory);
  49
  50         return new AbstractRegistration() {
  51             @Override
  52             protected void removeRegistration() {
  53                 synchronized (SimpleRIBExtensionProviderContext.this) {
  54                     SimpleRIBExtensionProviderContext.this.factories.remove(key);
  55                 }
  56             }
  57         };
  58     }
  59
  60     @Override
  61     public final synchronized AdjRIBsFactory getAdjRIBsInFactory(final Class<? extends AddressFamily> afi,
  62             final Class<? extends SubsequentAddressFamily> safi) {
  63         return this.factories.get(new TablesKey(afi, safi));
  64     }
  65
  66     @Override
  67     public <T extends RIBSupport> RIBSupportRegistration<T> registerRIBSupport(final Class<? extends AddressFamily> afi,
  68             final Class<? extends SubsequentAddressFamily> safi, final T support) {
  69         final TablesKey key = new TablesKey(afi, safi);
  70         final RIBSupport prev = this.supports.putIfAbsent(key, support);
  71         Preconditions.checkArgument(prev == null, "AFI %s SAFI %s is already registered with %s", afi, safi, prev);
  72         this.domSupports.put(RibSupportUtils.toYangTablesKey(afi,safi), support);
  73         addClassLoadingSupport(afi, safi, support);
  74         return new AbstractRIBSupportRegistration<T>(support) {
  75             @Override
  76             protected void removeRegistration() {
  77                 SimpleRIBExtensionProviderContext.this.supports.remove(key);
  78             }
  79         };
  80     }
  81
  82     private void addClassLoadingSupport(final Class<?> afi, final Class<?> safi, final RIBSupport s) {
  83         final Set<YangModuleInfo> moduleInfos =
  84                 getModuleInfos(afi, safi, s.routesListClass(), s.routesContainerClass(), s.routesCaseClass());
  85         if(!moduleInfos.isEmpty()) {
  86             classLoadingStrategy.addModuleInfos(moduleInfos);
  87         }
  88     }
  89
  90     private static Set<YangModuleInfo> getModuleInfos(final Class<?>... clazzes) {
  91         final Set<YangModuleInfo> moduleInfos = new HashSet<>();
  92         for(final Class<?> clz : clazzes) {
  93             try {
  94                 moduleInfos.add(BindingReflections.getModuleInfo(clz));
  95             } catch (final Exception e) {
  96                 LOG.debug("Could not find module info for class {}", clz, e);
  97             }
  98         }
  99         return moduleInfos;
 100     }
 101
 102     @Override
 103     public RIBSupport getRIBSupport(final Class<? extends AddressFamily> afi, final Class<? extends SubsequentAddressFamily> safi) {
 104         return getRIBSupport(new TablesKey(afi, safi));
 105     }
 106
 107     @Override
 108     public RIBSupport getRIBSupport(final TablesKey key) {
 109         return this.supports.get(Preconditions.checkNotNull(key));
 110     }
 111
 112     @Override
 113     public GeneratedClassLoadingStrategy getClassLoadingStrategy() {
 114         return classLoadingStrategy;
 115     }
 116
 117     @Override
 118     public RIBSupport getRIBSupport(final NodeIdentifierWithPredicates key) {
 119         return domSupports.get(key);
 120     }
 121 }