2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.protocol.bgp.rib.impl;
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 com.google.common.net.InetAddresses;
15 import com.google.common.primitives.UnsignedInteger;
16 import javax.annotation.Nonnull;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerId;
19 final class RouterIds {
20 private static final LoadingCache<String, UnsignedInteger> ROUTER_IDS = CacheBuilder.newBuilder().weakValues().build(new CacheLoader<String, UnsignedInteger>() {
22 public UnsignedInteger load(final String key) {
23 return UnsignedInteger.fromIntBits(InetAddresses.coerceToInteger(InetAddresses.forString(key)));
26 private static final LoadingCache<PeerId, UnsignedInteger> BGP_ROUTER_IDS = CacheBuilder.newBuilder().weakValues().build(new CacheLoader<PeerId, UnsignedInteger>() {
28 public UnsignedInteger load(final PeerId key) {
29 return routerIdForAddress(key.getValue().substring(BGP_PREFIX.length()));
32 private static final String BGP_PREFIX = "bgp://";
35 throw new UnsupportedOperationException();
39 * Get a router ID in unsigned integer format from an Ipv4Address. This implementation uses an internal
40 * cache, so the objects can be expected to perform quickly when compared with equals and similar.
42 * @param address Router ID as a dotted-quad
43 * @return Router ID as an {@link UnsignedInteger}
45 public static UnsignedInteger routerIdForAddress(@Nonnull final String address) {
46 return ROUTER_IDS.getUnchecked(address);
49 public static UnsignedInteger routerIdForPeerId(@Nonnull final PeerId peerId) {
50 Preconditions.checkArgument(peerId.getValue().startsWith(BGP_PREFIX), "Unhandled peer ID %s", peerId);
51 return BGP_ROUTER_IDS.getUnchecked(peerId);