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