bgp/parser-impl/src/main/java/org/opendaylight/protocol/bgp/parser/impl/SingletonProviderContext.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.parser.impl;
   9
  10 import org.opendaylight.protocol.bgp.parser.spi.AddressFamilyRegistry;
  11 import org.opendaylight.protocol.bgp.parser.spi.AttributeRegistry;
  12 import org.opendaylight.protocol.bgp.parser.spi.CapabilityRegistry;
  13 import org.opendaylight.protocol.bgp.parser.spi.MessageRegistry;
  14 import org.opendaylight.protocol.bgp.parser.spi.NlriRegistry;
  15 import org.opendaylight.protocol.bgp.parser.spi.ParameterRegistry;
  16 import org.opendaylight.protocol.bgp.parser.spi.ProviderContext;
  17 import org.opendaylight.protocol.bgp.parser.spi.SubsequentAddressFamilyRegistry;
  18
  19 public final class SingletonProviderContext implements ProviderContext {
  20         private static final class Holder {
  21                 private static final ProviderContext INSTANCE;
  22
  23                 static {
  24                         final ProviderContext pc = new SingletonProviderContext();
  25                         new ActivatorImpl().start(pc);
  26                         INSTANCE = pc;
  27                 }
  28         }
  29
  30         private final AddressFamilyRegistry afiReg = new SimpleAddressFamilyRegistry();
  31         private final AttributeRegistry attrReg = new SimpleAttributeRegistry();
  32         private final CapabilityRegistry capReg = new SimpleCapabilityRegistry();
  33         private final MessageRegistry msgReg = new SimpleMessageRegistry();
  34         private final NlriRegistry nlriReg;
  35         private final ParameterRegistry paramReg = new SimpleParameterRegistry();
  36         private final SubsequentAddressFamilyRegistry safiReg= new SimpleSubsequentAddressFamilyRegistry();
  37
  38         private SingletonProviderContext() {
  39                 nlriReg = new SimpleNlriRegistry(afiReg, safiReg);
  40         }
  41
  42         public static ProviderContext getInstance() {
  43                 return Holder.INSTANCE;
  44         }
  45
  46         @Override
  47         public AddressFamilyRegistry getAddressFamilyRegistry() {
  48                 return afiReg;
  49         }
  50
  51         @Override
  52         public AttributeRegistry getAttributeRegistry() {
  53                 return attrReg;
  54         }
  55
  56         @Override
  57         public CapabilityRegistry getCapabilityRegistry() {
  58                 return capReg;
  59         }
  60
  61         @Override
  62         public MessageRegistry getMessageRegistry() {
  63                 return msgReg;
  64         }
  65
  66         @Override
  67         public NlriRegistry getNlriRegistry() {
  68                 return nlriReg;
  69         }
  70
  71         @Override
  72         public ParameterRegistry getParameterRegistry() {
  73                 return paramReg;
  74         }
  75
  76         @Override
  77         public SubsequentAddressFamilyRegistry getSubsequentAddressFamilyRegistry() {
  78                 return safiReg;
  79         }
  80 }