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.concurrent.ConcurrentHashMap;
  12 import java.util.concurrent.ConcurrentMap;
  13 import org.opendaylight.protocol.concepts.AbstractRegistration;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.TablesKey;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.AddressFamily;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.SubsequentAddressFamily;
  17
  18 public class SimpleRIBExtensionProviderContext implements RIBExtensionProviderContext {
  19     private final ConcurrentMap<TablesKey, AdjRIBsFactory> factories = new ConcurrentHashMap<>();
  20     private final ConcurrentMap<TablesKey, RIBSupport> supports = new ConcurrentHashMap<>();
  21
  22     @Override
  23     public final synchronized AbstractRegistration registerAdjRIBsInFactory(final Class<? extends AddressFamily> afi,
  24             final Class<? extends SubsequentAddressFamily> safi, final AdjRIBsFactory factory) {
  25         final TablesKey key = new TablesKey(afi, safi);
  26
  27         if (this.factories.containsKey(key)) {
  28             throw new IllegalArgumentException("Specified AFI/SAFI combination is already registered");
  29         }
  30
  31         this.factories.put(key, factory);
  32
  33         return new AbstractRegistration() {
  34             @Override
  35             protected void removeRegistration() {
  36                 synchronized (SimpleRIBExtensionProviderContext.this) {
  37                     SimpleRIBExtensionProviderContext.this.factories.remove(key);
  38                 }
  39             }
  40         };
  41     }
  42
  43     @Override
  44     public final synchronized AdjRIBsFactory getAdjRIBsInFactory(final Class<? extends AddressFamily> afi,
  45             final Class<? extends SubsequentAddressFamily> safi) {
  46         return this.factories.get(new TablesKey(afi, safi));
  47     }
  48
  49     @Override
  50     public <T extends RIBSupport> RIBSupportRegistration<T> registerRIBSupport(final Class<? extends AddressFamily> afi,
  51             final Class<? extends SubsequentAddressFamily> safi, final T support) {
  52         final TablesKey key = new TablesKey(afi, safi);
  53
  54         final RIBSupport prev = this.supports.putIfAbsent(key, support);
  55         Preconditions.checkArgument(prev == null, "AFI %s SAFI %s is already registered with %s", afi, safi, prev);
  56
  57         return new AbstractRIBSupportRegistration<T>(support) {
  58             @Override
  59             protected void removeRegistration() {
  60                 SimpleRIBExtensionProviderContext.this.supports.remove(key);
  61             }
  62         };
  63     }
  64
  65     @Override
  66     public RIBSupport getRIBSupport(final Class<? extends AddressFamily> afi, final Class<? extends SubsequentAddressFamily> safi) {
  67         return getRIBSupport(new TablesKey(afi, safi));
  68     }
  69
  70     @Override
  71     public RIBSupport getRIBSupport(final TablesKey key) {
  72         return this.supports.get(Preconditions.checkNotNull(key));
  73     }
  74 }